/* roulang page: index */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:active {
            border-color: var(--primary-hover);
            transform: translateY(0);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            padding: 6px 0;
            border-bottom: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .btn-text:hover {
            color: var(--primary-hover);
            border-bottom-color: var(--primary);
        }

        .btn-text .arrow {
            display: inline-block;
            transition: transform var(--transition-fast);
        }

        .btn-text:hover .arrow {
            transform: translateX(4px);
        }

        /* ========== Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 700;
            font-size: 19px;
            color: var(--text-title);
            letter-spacing: 0.02em;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background-color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-primary);
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo-text {
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: nowrap;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            white-space: nowrap;
            transition: color var(--transition-fast);
            border-radius: 4px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 12px;
            right: 12px;
            height: 2px;
            background-color: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: scaleX(1);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .nav-status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--success);
            flex-shrink: 0;
        }

        .nav-bell {
            position: relative;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-body);
            transition: background-color var(--transition-fast);
            background: none;
            border: none;
            font-size: 16px;
        }

        .nav-bell:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        .nav-bell-dot {
            position: absolute;
            top: 5px;
            right: 6px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--warning);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background-color: var(--bg-card);
            color: var(--text-body);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background-color: var(--text-body);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
            padding: 12px 24px 20px;
            box-shadow: var(--shadow-md);
            max-height: calc(100vh - var(--nav-height));
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            padding-left: 16px;
        }

        .mobile-menu .nav-status {
            margin-top: 12px;
        }

        .mobile-menu .btn-primary {
            margin-top: 12px;
            width: 100%;
            justify-content: center;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 72vh;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 60px 0;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-color: rgba(46, 90, 143, 0.13);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content {
            background-color: rgba(255, 255, 255, 0.94);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            box-shadow: var(--shadow-md);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background-color: var(--accent-light);
            padding: 5px 12px;
            border-radius: 4px;
            margin-bottom: 16px;
        }

        .hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 24px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-number {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .hero-visual {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16 / 10;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px 28px;
            background: linear-gradient(to top, rgba(26, 39, 51, 0.85) 0%, rgba(26, 39, 51, 0.35) 60%, transparent 100%);
            color: var(--text-on-dark);
        }

        .hero-visual-overlay p {
            font-size: 14px;
            line-height: 1.6;
            opacity: 0.9;
        }

        .hero-visual-overlay strong {
            font-size: 18px;
            font-weight: 700;
            display: block;
            margin-bottom: 4px;
            opacity: 1;
        }

        /* ========== Service Cards ========== */
        .service-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .service-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-card.featured {
            grid-row: span 2;
            padding: 32px 28px;
            background-color: var(--bg-card);
            border-color: var(--primary-border);
            box-shadow: var(--shadow-md);
        }

        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }

        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            margin-bottom: 4px;
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
        }

        .service-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }

        .service-card .btn-text {
            align-self: flex-start;
        }

        /* ========== Stats ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
        }

        .stat-block {
            text-align: center;
            padding: 8px 4px;
        }

        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            line-height: 1.2;
        }

        .stat-number .stat-unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== Brand Intro ========== */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: start;
        }

        .brand-intro-left h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .brand-intro-left .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .brand-intro-left .badge-list span {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
        }

        .brand-intro-right p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .brand-intro-right p:last-child {
            margin-bottom: 0;
        }

        /* ========== Case Cards ========== */
        .case-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr 0.9fr;
            gap: 20px;
            align-items: stretch;
        }

        .case-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .case-card.middle {
            padding: 24px;
            box-shadow: var(--shadow-md);
            border-color: var(--primary-border);
        }

        .case-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .case-cover {
            width: 100%;
            aspect-ratio: 16 / 10;
            border-radius: var(--radius-image);
            overflow: hidden;
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }

        .case-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.45;
        }

        .case-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }

        .case-card .btn-text {
            align-self: flex-start;
        }

        /* ========== Methodology Steps ========== */
        .methodology {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            counter-reset: step-counter;
        }

        .method-step {
            display: grid;
            grid-template-columns: 60px 1fr;
            gap: 20px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border-color);
            counter-increment: step-counter;
        }

        .method-step:last-child {
            border-bottom: none;
        }

        .method-step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--text-on-primary);
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .method-step-content h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .method-step-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            max-width: 800px;
        }

        /* ========== Deep Content ========== */
        .deep-content {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 28px;
        }

        .deep-content:last-child {
            margin-bottom: 0;
        }

        .deep-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
        }

        .deep-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-top: 20px;
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .deep-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .deep-content p:last-child {
            margin-bottom: 0;
        }

        /* ========== News ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: grid;
            grid-template-columns: 70px 1fr;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
            align-items: start;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-date {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-radius: 8px;
            padding: 8px 10px;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 56px;
        }

        .news-date .day {
            font-size: 20px;
            font-weight: 800;
            line-height: 1.2;
        }

        .news-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .news-content .btn-text {
            font-size: 13px;
        }

        /* ========== Collection Directory ========== */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .collection-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 8px;
            text-align: left;
        }

        .collection-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }

        .collection-card .collection-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 3px 10px;
            border-radius: 4px;
            display: inline-block;
            align-self: flex-start;
        }

        .collection-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
        }

        .collection-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== Tool Highlight ========== */
        .tool-highlight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .tool-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 3 / 4;
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            align-items: flex-end;
        }

        .tool-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .tool-card-info {
            position: relative;
            z-index: 1;
            padding: 20px 18px;
            background: linear-gradient(to top, rgba(26, 39, 51, 0.9) 0%, rgba(26, 39, 51, 0.4) 70%, transparent 100%);
            color: var(--text-on-dark);
            width: 100%;
        }

        .tool-card-info h3 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .tool-card-info p {
            font-size: 13px;
            opacity: 0.85;
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 860px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.open {
            border-color: var(--primary-border);
            background-color: var(--primary-lighter);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            transition: transform var(--transition-fast);
            border: 1px solid var(--primary-border);
            border-radius: 50%;
            line-height: 1;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            padding-left: 34px;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background-color: var(--primary-hover);
            color: var(--text-on-dark);
            padding: 60px 0;
        }

        .cta-section .container {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.7;
        }

        .cta-section .btn-primary {
            background-color: var(--accent);
            border-color: var(--accent);
            font-size: 16px;
            padding: 13px 28px;
            min-height: 48px;
            white-space: nowrap;
        }

        .cta-section .btn-primary:hover {
            background-color: #c47a2a;
            border-color: #c47a2a;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
        }

        /* ========== Contact ========== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 36px;
            align-items: start;
        }

        .contact-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .contact-info p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .contact-form {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-title);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 15px;
            color: var(--text-body);
            background-color: var(--bg-card);
            transition: all var(--transition-fast);
            min-height: 42px;
            resize: vertical;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 90, 143, 0.12);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .form-submit {
            align-self: flex-end;
            min-width: 120px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            padding: 5px 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(240, 244, 248, 0.15);
            padding-top: 20px;
            font-size: 13px;
            color: rgba(240, 244, 248, 0.65);
            line-height: 1.7;
        }

        .footer-bottom p {
            margin-bottom: 4px;
        }

        .footer-bottom a {
            color: rgba(240, 244, 248, 0.8);
            text-decoration: underline;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap-desktop: 56px;
                --max-width: 960px;
            }

            .nav-links {
                gap: 0;
            }

            .nav-links a {
                padding: 8px 8px;
                font-size: 13px;
            }

            .hero .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .hero-visual {
                aspect-ratio: 16 / 8;
                max-height: 320px;
            }

            .stats-bar {
                grid-template-columns: repeat(3, 1fr);
            }

            .collection-grid,
            .tool-highlight-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .case-grid {
                grid-template-columns: 1fr 1fr;
            }

            .case-card.middle {
                grid-column: span 2;
            }

            .brand-intro {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .contact-grid {
                grid-template-columns: 1fr;
            }

            .cta-section .container {
                grid-template-columns: 1fr;
                text-align: left;
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap-desktop: 44px;
                --nav-height: 56px;
                --max-width: 100%;
            }

            body {
                font-size: 15px;
                padding-top: var(--nav-height);
            }

            .container {
                padding: 0 16px;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .section-title {
                font-size: 23px;
            }

            .nav-links {
                display: none;
            }

            .nav-status {
                display: none;
            }

            .nav-actions .nav-bell {
                display: none;
            }

            .nav-actions .btn-primary {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                min-height: 58vh;
                padding: 32px 0;
            }

            .hero .container {
                gap: 16px;
            }

            .hero-content {
                padding: 24px 20px;
            }

            .hero h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-stats {
                gap: 16px;
            }

            .hero-stat-number {
                font-size: 22px;
            }

            .hero-visual {
                aspect-ratio: 16 / 9;
                max-height: 240px;
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .service-card.featured {
                grid-row: span 1;
                padding: 24px 20px;
            }

            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
                padding: 20px 16px;
            }

            .stat-number {
                font-size: 30px;
            }

            .brand-intro {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .case-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .case-card.middle {
                grid-column: span 1;
                padding: 20px;
            }

            .method-step {
                grid-template-columns: 40px 1fr;
                gap: 14px;
                padding: 20px 0;
            }

            .method-step-number {
                width: 38px;
                height: 38px;
                font-size: 18px;
            }

            .deep-content {
                padding: 24px 20px;
            }

            .news-item {
                grid-template-columns: 56px 1fr;
                gap: 14px;
            }

            .news-date {
                font-size: 11px;
                padding: 6px 6px;
                min-height: 48px;
            }

            .news-date .day {
                font-size: 16px;
            }

            .collection-grid,
            .tool-highlight-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .tool-card {
                aspect-ratio: 16 / 9;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 14px;
                padding-left: 28px;
            }

            .cta-section {
                padding: 40px 0;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .contact-form {
                padding: 20px 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-col a {
                white-space: normal;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap-mobile: 36px;
            }

            .section-title {
                font-size: 21px;
            }

            .hero h1 {
                font-size: 22px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-stats {
                gap: 12px;
                flex-wrap: wrap;
            }

            .hero-stat-number {
                font-size: 20px;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
                padding: 16px 10px;
            }

            .stat-number {
                font-size: 26px;
            }

            .stat-number .stat-unit {
                font-size: 14px;
            }

            .stat-label {
                font-size: 12px;
            }

            .service-card {
                padding: 18px 16px;
            }

            .service-card h3 {
                font-size: 16px;
            }

            .deep-content {
                padding: 18px 16px;
            }

            .deep-content h2 {
                font-size: 20px;
            }

            .news-date {
                font-size: 10px;
                min-height: 44px;
            }

            .news-date .day {
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
            border-color: var(--primary-hover);
            background-color: var(--primary-border);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            padding: 6px 2px;
            border-bottom: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .btn-text .arrow {
            transition: transform var(--transition-fast);
        }

        .btn-text:hover {
            color: var(--primary-hover);
            border-bottom-color: var(--primary-hover);
        }

        .btn-text:hover .arrow {
            transform: translateX(4px);
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background-color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-brand-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .nav-links a {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }

        .nav-links a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .nav-status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--success);
            flex-shrink: 0;
        }

        .nav-bell {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 6px;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .nav-bell:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .nav-bell-dot {
            position: absolute;
            top: 5px;
            right: 6px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--warning);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            align-items: center;
            justify-content: center;
            color: var(--text-title);
            font-size: 20px;
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            padding: 20px 0 0;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb-sep {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .breadcrumb-current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .category-hero {
            padding: 36px 0 56px;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
        }

        .category-hero .container {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .category-hero-content h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .category-hero-content .hero-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 24px;
            max-width: 560px;
        }

        .category-hero-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 21/9;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* 分类说明 */
        .category-intro {
            padding: 48px 0;
            background-color: var(--bg-page);
        }

        .category-intro .container {
            display: grid;
            grid-template-columns: 0.35fr 0.65fr;
            gap: 40px;
            align-items: start;
        }

        .category-intro-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .category-intro-heading .intro-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .category-intro-body p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .category-intro-body p:last-child {
            margin-bottom: 0;
        }

        /* 数据标签区 */
        .trend-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        .trend-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 20px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 500;
            border: 1px solid var(--primary-border);
            transition: all var(--transition-fast);
        }

        .trend-badge:hover {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        /* 数据统计 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.15;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* 文章列表 - 偶数分类页：上标题下摘要纯列表 */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-border);
            transform: translateY(-2px);
        }

        .article-item-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
        }

        .article-item-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            transition: color var(--transition-fast);
        }

        .article-item:hover .article-item-title {
            color: var(--primary);
        }

        .article-item-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            padding-top: 3px;
        }

        .article-item-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        .article-item-actions {
            display: flex;
            justify-content: flex-end;
            margin-top: 4px;
        }

        /* 分页 */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            padding: 32px 0 16px;
        }

        .pagination {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 8px 12px;
            box-shadow: var(--shadow-sm);
        }

        .pagination-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .pagination-btn:hover {
            background-color: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary-border);
        }

        .pagination-btn.active {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
            font-weight: 600;
        }

        .pagination-btn.disabled {
            opacity: 0.45;
            pointer-events: none;
        }

        /* 推荐内容 */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .recommend-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .recommend-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .recommend-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .recommend-card:hover .recommend-card-image img {
            transform: scale(1.04);
        }

        .recommend-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .recommend-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
        }

        .recommend-card-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
        }

        /* 方法论步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .step-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--text-on-primary);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .step-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 860px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            transition: color var(--transition-fast);
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            line-height: 1;
        }

        .faq-item.open .faq-icon {
            background-color: var(--primary);
            color: var(--text-on-primary);
        }

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA */
        .category-cta {
            padding: 56px 0;
            background-color: var(--primary-hover);
            color: var(--text-on-dark);
        }

        .category-cta .container {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .cta-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-on-dark);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 15px;
            color: rgba(240, 244, 248, 0.82);
            line-height: 1.75;
            max-width: 520px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: flex-end;
            flex-wrap: wrap;
        }

        .btn-on-dark {
            background-color: var(--text-on-dark);
            color: var(--primary-hover);
            border-color: var(--text-on-dark);
        }

        .btn-on-dark:hover {
            background-color: #fff;
            color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(240, 244, 248, 0.55);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: rgba(240, 244, 248, 0.8);
            color: var(--text-on-dark);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background-color: #1D3E5F;
            color: #F0F4F8;
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.8fr 0.8fr 0.8fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #F0F4F8;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.72);
            line-height: 1.7;
            max-width: 260px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #F0F4F8;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(240, 244, 248, 0.7);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(240, 244, 248, 0.15);
            padding-top: 20px;
        }

        .footer-bottom p {
            font-size: 12px;
            color: rgba(240, 244, 248, 0.6);
            line-height: 1.8;
        }

        .footer-bottom a {
            color: rgba(240, 244, 248, 0.75);
            font-size: 12px;
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            :root {
                --section-gap-desktop: 56px;
                --max-width: 960px;
            }
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-intro .container {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-cta .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-actions {
                justify-content: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap-desktop: 44px;
                --nav-height: 56px;
                --max-width: 100%;
            }
            body {
                padding-top: var(--nav-height);
            }
            .site-header .container {
                flex-wrap: nowrap;
                gap: 10px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background-color: var(--bg-card);
                border-bottom: 1px solid var(--border-color);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 16px 24px;
                display: none;
                box-shadow: var(--shadow-md);
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                display: block;
                width: 100%;
                padding: 12px 4px;
                border-bottom: 1px solid var(--border-color);
                font-size: 15px;
            }
            .nav-links a:last-child {
                border-bottom: none;
            }
            .nav-status {
                display: none;
            }
            .nav-bell {
                display: none;
            }
            .nav-brand-text {
                font-size: 15px;
            }
            .category-hero {
                padding: 24px 0 40px;
            }
            .category-hero-content h1 {
                font-size: 24px;
            }
            .category-hero-content .hero-subtitle {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 28px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .article-item {
                padding: 16px 18px;
            }
            .article-item-head {
                flex-direction: column;
                gap: 6px;
            }
            .article-item-date {
                padding-top: 0;
            }
            .pagination {
                flex-wrap: wrap;
                justify-content: center;
            }
            .category-cta {
                padding: 40px 0;
            }
            .cta-content h2 {
                font-size: 22px;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap-mobile: 36px;
            }
            .container {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-card {
                padding: 18px 16px;
            }
            .article-item-title {
                font-size: 16px;
            }
            .article-item-summary {
                font-size: 13px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .category-hero-content h1 {
                font-size: 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:active {
            transform: translateY(0);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            min-height: 36px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-brand .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background-color: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
            padding: 0 12px;
        }

        .nav-links a {
            position: relative;
            padding: 8px 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 10px;
            right: 10px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 1px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            right: 50%;
            height: 2px;
            background-color: var(--primary);
            border-radius: 1px;
            transition: left var(--transition-fast), right var(--transition-fast);
        }

        .nav-links a:hover::after {
            left: 10px;
            right: 10px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .nav-status .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--success);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.3);
            }
        }

        .nav-bell {
            position: relative;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            background-color: var(--primary-light);
            transition: all var(--transition-fast);
            font-size: 16px;
        }

        .nav-bell:hover {
            background-color: var(--primary-border);
            color: var(--primary);
        }

        .nav-bell .bell-dot {
            position: absolute;
            top: 6px;
            right: 7px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--warning);
            border: 1.5px solid #fff;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 6px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            background-color: var(--primary-light);
            border: 1px solid var(--primary-border);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background-color: var(--text-body);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        /* ===== Hero 分类页 ===== */
        .category-hero {
            position: relative;
            min-height: 500px;
            display: flex;
            align-items: center;
            background-color: #1A2733;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            padding: 72px 0 64px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 39, 51, 0.88) 0%, rgba(46, 90, 143, 0.72) 55%, rgba(26, 39, 51, 0.55) 100%);
            z-index: 1;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 39, 51, 0.3) 0%, rgba(26, 39, 51, 0.15) 100%);
            z-index: 1;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            margin-bottom: 20px;
        }

        .hero-breadcrumb a {
            color: rgba(240, 244, 248, 0.85);
            transition: color var(--transition-fast);
        }

        .hero-breadcrumb a:hover {
            color: #fff;
        }

        .hero-breadcrumb .separator {
            color: rgba(240, 244, 248, 0.45);
            font-size: 12px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: rgba(217, 140, 43, 0.2);
            border: 1px solid rgba(217, 140, 43, 0.4);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 4px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .hero-badge .badge-icon {
            font-size: 14px;
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .category-hero .hero-subtitle {
            font-size: 17px;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.7;
            max-width: 640px;
            margin-bottom: 28px;
        }

        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .category-hero .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .category-hero .btn-primary:hover {
            background-color: #3A6DA3;
            border-color: #3A6DA3;
        }

        .category-hero .btn-secondary {
            background-color: transparent;
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .category-hero .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .hero-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-item .stat-value {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .hero-stat-item .stat-label {
            font-size: 13px;
            color: rgba(240, 244, 248, 0.65);
            letter-spacing: 0.02em;
        }

        /* ===== 分类说明区 ===== */
        .category-intro {
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            padding: 48px 0;
        }

        .category-intro .intro-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: start;
        }

        .category-intro .intro-label {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.4;
        }

        .category-intro .intro-text {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.85;
        }

        .category-intro .intro-text p {
            margin-bottom: 16px;
        }

        .category-intro .intro-text p:last-child {
            margin-bottom: 0;
        }

        /* ===== 对比维度卡片 ===== */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .dimension-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            text-align: center;
        }

        .dimension-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-border);
        }

        .dimension-card .dim-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 12px;
        }

        .dimension-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .dimension-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 文章列表区（左图右文） ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-item {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 20px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 18px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .article-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }

        .article-item .article-thumb {
            width: 100%;
            aspect-ratio: 4 / 3;
            border-radius: var(--radius-image);
            overflow: hidden;
            background-color: var(--primary-light);
            flex-shrink: 0;
        }

        .article-item .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-item:hover .article-thumb img {
            transform: scale(1.04);
        }

        .article-item .article-body {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 10px;
        }

        .article-item .article-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-item .article-meta .article-date {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: 500;
            font-size: 12px;
        }

        .article-item .article-meta .article-tag {
            color: var(--accent);
            font-weight: 500;
        }

        .article-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
            margin: 0;
        }

        .article-item h3 a {
            color: var(--text-title);
            transition: color var(--transition-fast);
        }

        .article-item h3 a:hover {
            color: var(--primary);
        }

        .article-item .article-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .article-item .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .article-item .read-more .arrow {
            transition: transform var(--transition-fast);
            font-size: 14px;
        }

        .article-item .read-more:hover .arrow {
            transform: translateX(4px);
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .pagination-wrap .page-btn {
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .pagination-wrap .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .pagination-wrap .page-btn.active {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .pagination-wrap .page-btn.disabled {
            opacity: 0.45;
            pointer-events: none;
        }

        /* ===== 深度方法区 ===== */
        .method-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .method-step {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition-base);
        }

        .method-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .method-step .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .method-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .method-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== 推荐内容区 ===== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .recommend-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .recommend-card .rec-thumb {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: var(--primary-light);
        }

        .recommend-card .rec-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .recommend-card:hover .rec-thumb img {
            transform: scale(1.05);
        }

        .recommend-card .rec-body {
            padding: 16px 18px;
        }

        .recommend-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .recommend-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 820px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            transition: all var(--transition-fast);
            user-select: none;
            text-align: left;
            width: 100%;
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== CTA区 ===== */
        .cta-section {
            background-color: var(--primary);
            padding: 56px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(240, 244, 248, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-section .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        .cta-section .btn-white:hover {
            background-color: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--primary-hover);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(240, 244, 248, 0.12);
        }

        .site-footer .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.7);
            line-height: 1.7;
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.7);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-col a:hover {
            color: #fff;
        }

        .site-footer .footer-bottom {
            padding: 20px 0;
            text-align: center;
        }

        .site-footer .footer-bottom p {
            font-size: 13px;
            color: rgba(240, 244, 248, 0.55);
            margin-bottom: 6px;
        }

        .site-footer .footer-bottom a {
            color: rgba(240, 244, 248, 0.75);
            text-decoration: underline;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --section-gap-desktop: 56px;
                --max-width: 960px;
            }

            .dimension-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .method-flow {
                grid-template-columns: repeat(2, 1fr);
            }

            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .category-intro .intro-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .article-item {
                grid-template-columns: 220px 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap-desktop: 44px;
                --nav-height: 56px;
                --max-width: 100%;
            }

            body {
                padding-top: var(--nav-height);
            }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background-color: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px;
                gap: 0;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 10px;
                border-bottom: 1px solid var(--primary-lighter);
                font-size: 15px;
                text-align: left;
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a.active::after {
                display: none;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-actions {
                gap: 8px;
            }

            .nav-status {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .category-hero {
                min-height: 420px;
                padding: 56px 0 48px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-subtitle {
                font-size: 15px;
            }

            .hero-stats-row {
                gap: 20px;
                margin-top: 24px;
            }

            .hero-stat-item .stat-value {
                font-size: 22px;
            }

            .dimension-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .method-flow {
                grid-template-columns: 1fr;
            }

            .recommend-grid {
                grid-template-columns: 1fr;
            }

            .article-item {
                grid-template-columns: 1fr;
                padding: 14px;
            }

            .article-item .article-thumb {
                aspect-ratio: 16 / 9;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .section-title {
                font-size: 23px;
            }

            .cta-section h2 {
                font-size: 23px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap-mobile: 36px;
                --section-gap-desktop: 36px;
            }

            .container {
                padding: 0 16px;
            }

            .nav-brand {
                font-size: 16px;
                gap: 6px;
            }

            .nav-brand .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }

            .nav-actions .nav-bell {
                display: none;
            }

            .nav-actions .btn-sm {
                padding: 6px 12px;
                font-size: 13px;
                min-height: 32px;
            }

            .category-hero {
                min-height: 380px;
                padding: 44px 0 36px;
            }

            .category-hero h1 {
                font-size: 22px;
            }

            .category-hero .hero-subtitle {
                font-size: 14px;
            }

            .hero-cta-group {
                flex-direction: column;
                gap: 8px;
            }

            .hero-cta-group .btn {
                width: 100%;
            }

            .dimension-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .pagination-wrap .page-btn {
                min-width: 34px;
                height: 34px;
                padding: 0 8px;
                font-size: 13px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 72px;
            --section-gap-mobile: 44px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            text-rendering: optimizeLegibility;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(0);
            border-color: var(--primary-hover);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            padding: 4px 0;
            transition: all var(--transition-fast);
        }
        .btn-text::after {
            content: "→";
            font-size: 16px;
            transition: transform var(--transition-fast);
        }
        .btn-text:hover::after {
            transform: translateX(4px);
        }
        .btn-text:hover {
            color: var(--primary-hover);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(20, 40, 60, 0.04);
        }

        .nav-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background-color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .nav-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .nav-logo-text span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
        }

        .nav-links a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width var(--transition-fast);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--success);
            box-shadow: 0 0 0 2px rgba(91, 138, 106, 0.2);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { box-shadow: 0 0 0 2px rgba(91, 138, 106, 0.2); }
            50% { box-shadow: 0 0 0 5px rgba(91, 138, 106, 0.1); }
        }

        .nav-bell {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 6px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            transition: all var(--transition-fast);
        }
        .nav-bell:hover {
            background-color: var(--primary-border);
        }
        .nav-bell .bell-dot {
            position: absolute;
            top: 7px;
            right: 8px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--warning);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background-color: #FFFFFF;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--text-title);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(4px, 4px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(4px, -4px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            padding: 16px 24px 24px;
            z-index: 999;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu .mobile-nav-links a {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 6px;
            transition: all var(--transition-fast);
        }
        .mobile-menu .mobile-nav-links a:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu .mobile-nav-links a.active {
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-menu .mobile-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--primary-hover);
        }
        .breadcrumb .separator {
            color: var(--border-color);
            font-weight: 300;
        }
        .breadcrumb .current {
            color: var(--text-title);
            font-weight: 600;
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            padding: 56px 0 48px;
            background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-page) 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero-grid {
            display: grid;
            grid-template-columns: 1fr 400px;
            gap: 40px;
            align-items: center;
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.005em;
        }
        .category-hero .hero-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.75;
            max-width: 600px;
            margin-bottom: 24px;
        }
        .hero-btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .category-hero-image {
            border-radius: var(--radius-image);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 16/8;
            position: relative;
        }
        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .category-hero-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(46, 90, 143, 0.08);
        }

        /* ===== 说明区 ===== */
        .intro-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
        }
        .intro-panel h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .intro-panel p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 14px;
        }
        .intro-panel p:last-child {
            margin-bottom: 0;
        }
        .intro-highlight {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== 文章列表（左图右文） ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-item {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 22px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .article-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }
        .article-img {
            aspect-ratio: 4/3;
            overflow: hidden;
            background-color: var(--bg-section-alt);
        }
        .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-item:hover .article-img img {
            transform: scale(1.03);
        }
        .article-content {
            padding: 20px 20px 20px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .article-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 8px;
        }
        .article-content .article-date {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .article-content p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .article-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 4px;
            letter-spacing: 0.02em;
        }

        /* ===== 分页器 ===== */
        .pagination-area {
            display: flex;
            justify-content: center;
            padding: 20px 0 8px;
        }
        .pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .pagination .current {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ===== 推荐内容 ===== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .recommend-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-border);
        }
        .recommend-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: var(--bg-section-alt);
        }
        .recommend-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .recommend-card:hover .recommend-img img {
            transform: scale(1.04);
        }
        .recommend-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .recommend-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 6px;
        }
        .recommend-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 820px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            background: none;
            text-align: left;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--primary-border);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-panel {
            background: var(--primary-hover);
            background-image: linear-gradient(135deg, #1D3E5F 0%, #2E5A8F 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: var(--text-on-dark);
            box-shadow: var(--shadow-md);
        }
        .cta-panel h2 {
            font-size: 26px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cta-panel p {
            font-size: 16px;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.75;
            max-width: 640px;
            margin: 0 auto 28px;
        }
        .cta-panel .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #FFFFFF;
            color: var(--primary-hover);
            font-weight: 700;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--radius-button);
            border: none;
            transition: all var(--transition-fast);
            min-height: 44px;
        }
        .cta-panel .btn-cta-white:hover {
            background-color: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer h3 {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .site-footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: rgba(240, 244, 248, 0.9);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .site-footer p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand p {
            max-width: 320px;
        }
        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            color: rgba(240, 244, 248, 0.7);
            font-size: 14px;
            transition: all var(--transition-fast);
        }
        .footer-col a:hover {
            color: #FFFFFF;
            opacity: 1;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(240, 244, 248, 0.6);
            margin-bottom: 4px;
            line-height: 1.6;
        }
        .footer-bottom a {
            color: rgba(240, 244, 248, 0.75);
            text-decoration: underline;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero-grid {
                grid-template-columns: 1fr 320px;
                gap: 28px;
            }
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-item {
                grid-template-columns: 180px 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap-desktop: 44px;
                --nav-height: 56px;
                --max-width: 100%;
            }
            body {
                padding-top: var(--nav-height);
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .container {
                padding: 0 16px;
            }
            .nav-links {
                display: none;
            }
            .nav-right .nav-status,
            .nav-right .nav-bell {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-right .btn-primary {
                display: none;
            }
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-hero {
                padding: 32px 0 36px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero-image {
                aspect-ratio: 16/9;
            }
            .hero-btn-group {
                flex-direction: column;
            }
            .hero-btn-group .btn {
                width: 100%;
            }
            .intro-panel {
                padding: 24px 18px;
            }
            .article-item {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .article-img {
                aspect-ratio: 16/9;
            }
            .article-content {
                padding: 16px 18px 18px;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                padding: 32px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                text-align: left;
            }
            .pagination a,
            .pagination span {
                min-width: 36px;
                height: 36px;
                padding: 0 8px;
                font-size: 13px;
            }
            .section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 16px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .cta-panel h2 {
                font-size: 22px;
            }
            .section-title {
                font-size: 21px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 72px;
            --section-gap-mobile: 44px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:active {
            transform: translateY(0);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
        }

        .btn-sm {
            font-size: 14px;
            padding: 8px 18px;
            min-height: 36px;
        }

        .btn-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            transition: gap var(--transition-fast), color var(--transition-fast);
        }

        .btn-arrow:hover {
            color: var(--primary-hover);
            gap: 10px;
        }

        .btn-arrow .arrow {
            display: inline-block;
            transition: transform var(--transition-fast);
        }

        .btn-arrow:hover .arrow {
            transform: translateX(3px);
        }

        /* 导航 */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-nav .container {
            display: flex;
            align-items: center;
            gap: 20px;
            width: 100%;
            flex-wrap: nowrap;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-brand .brand-icon {
            width: 34px;
            height: 34px;
            background-color: var(--primary);
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }

        .nav-brand .brand-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-border) transparent;
        }

        .nav-links a {
            display: inline-flex;
            position: relative;
            align-items: center;
            padding: 8px 11px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            white-space: nowrap;
            transition: color var(--transition-fast);
            border-radius: 4px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width var(--transition-fast);
            border-radius: 1px;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 60%;
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .nav-status .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--success);
            flex-shrink: 0;
        }

        .nav-bell {
            position: relative;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-body);
            border-radius: 6px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }

        .nav-bell:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        .nav-bell .bell-icon {
            font-size: 18px;
            line-height: 1;
        }

        .nav-bell .bell-dot {
            position: absolute;
            top: 7px;
            right: 7px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--warning);
            border: 1px solid #FFFFFF;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            color: var(--text-title);
            border-radius: 6px;
            flex-shrink: 0;
            transition: background-color var(--transition-fast);
        }

        .nav-toggle:hover {
            background-color: var(--primary-light);
        }

        .nav-toggle .toggle-bar {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--text-title);
            border-radius: 1px;
            position: relative;
            transition: background-color var(--transition-fast);
        }

        .nav-toggle .toggle-bar::before,
        .nav-toggle .toggle-bar::after {
            content: '';
            position: absolute;
            left: 0;
            width: 22px;
            height: 2px;
            background-color: var(--text-title);
            border-radius: 1px;
            transition: transform var(--transition-fast);
        }

        .nav-toggle .toggle-bar::before {
            top: -7px;
        }

        .nav-toggle .toggle-bar::after {
            top: 7px;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .breadcrumb-sep {
            color: var(--primary-border);
            user-select: none;
        }

        .breadcrumb .breadcrumb-current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
            background-color: var(--primary-lighter);
            padding: 56px 0 48px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center right;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: linear-gradient(105deg, rgba(46, 90, 143, 0.12) 0%, rgba(247, 249, 252, 0.55) 55%, rgba(247, 249, 252, 0.78) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .hero-content .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 26px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-panel {
            background-color: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

        .hero-panel .panel-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-panel .panel-title .panel-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent);
            flex-shrink: 0;
        }

        .hero-panel ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hero-panel ul li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        .hero-panel ul li .check {
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 1px;
        }

        /* 说明区 */
        .desc-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .desc-block .desc-text {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.9;
        }

        .desc-block .desc-text p {
            margin-bottom: 14px;
        }

        .desc-block .desc-text p:last-child {
            margin-bottom: 0;
        }

        .desc-side {
            background-color: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .desc-side h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 14px;
        }

        .desc-side ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .desc-side ul li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        .desc-side ul li .num {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* 彩种概览 */
        .lottery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-top: 28px;
        }

        .lottery-card {
            background-color: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .lottery-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }

        .lottery-card .lottery-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .lottery-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .lottery-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 文章列表区（偶数分类页：上标题下摘要纯列表） */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border-top: 1px solid var(--border-color);
            margin-top: 20px;
        }

        .post-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
            transition: background-color var(--transition-fast);
        }

        .post-item:hover {
            background-color: rgba(238, 242, 247, 0.5);
        }

        .post-item .post-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .post-item .post-meta .post-date {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .post-item .post-meta .post-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 4px;
        }

        .post-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .post-item h3 a {
            color: var(--text-title);
            transition: color var(--transition-fast);
        }

        .post-item h3 a:hover {
            color: var(--primary);
        }

        .post-item .post-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .post-item .post-link {
            font-size: 14px;
        }

        /* 分页 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .pagination .page-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            transition: all var(--transition-fast);
        }

        .pagination .page-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .pagination .page-item.active {
            background-color: var(--primary);
            border-color: var(--primary);
            color: var(--text-on-primary);
            font-weight: 600;
        }

        .pagination .page-item.disabled {
            opacity: 0.5;
            pointer-events: none;
        }

        /* 推荐卡片 */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-top: 28px;
        }

        .recommend-card {
            background-color: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .recommend-card .recommend-thumb {
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: var(--bg-section-alt);
        }

        .recommend-card .recommend-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .recommend-card:hover .recommend-thumb img {
            transform: scale(1.03);
        }

        .recommend-card .recommend-body {
            padding: 18px 20px 20px;
        }

        .recommend-card .recommend-body h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .recommend-card .recommend-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        /* 方法步骤 */
        .method-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin-top: 28px;
        }

        .method-step {
            position: relative;
            background-color: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .method-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .method-step .step-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary-border);
            line-height: 1;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }

        .method-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .method-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 24px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            transition: color var(--transition-fast);
            user-select: none;
        }

        .faq-item .faq-question:hover {
            color: var(--primary);
        }

        .faq-item .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            border-radius: 50%;
            background-color: var(--primary-light);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-item .faq-answer p {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background-color: var(--primary);
            color: var(--text-on-primary);
            padding: 56px 0;
        }

        .cta-section .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-section .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-on-primary);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .cta-section .cta-text p {
            font-size: 15px;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.7;
            max-width: 520px;
        }

        .cta-section .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .cta-section .btn-white {
            background-color: #FFFFFF;
            color: var(--primary);
            border: 1px solid #FFFFFF;
        }

        .cta-section .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-color: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .cta-section .btn-outline-white {
            background-color: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }

        .cta-section .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: #FFFFFF;
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        /* 页脚 */
        .site-footer {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            border-top: 1px solid rgba(240, 244, 248, 0.15);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(240, 244, 248, 0.65);
            line-height: 1.6;
        }

        .footer-bottom a {
            color: rgba(240, 244, 248, 0.85);
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* 移动端断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .desc-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .nav-links a {
                padding: 8px 8px;
                font-size: 13px;
            }

            .nav-right {
                gap: 8px;
            }

            .nav-status {
                font-size: 12px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --section-gap-desktop: 44px;
                --section-gap-mobile: 36px;
            }

            body {
                padding-top: 56px;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .site-nav .container {
                gap: 10px;
            }

            .nav-brand .brand-name {
                font-size: 15px;
                font-weight: 700;
            }

            .nav-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                flex-direction: column;
                align-items: stretch;
                padding: 10px 20px 16px;
                box-shadow: var(--shadow-lg);
                gap: 2px;
                overflow-y: auto;
                max-height: calc(100vh - 56px);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 10px;
                border-bottom: 1px solid var(--primary-lighter);
                font-size: 14px;
                border-radius: 4px;
                white-space: normal;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-links a.active {
                background-color: var(--primary-light);
                border-bottom-color: var(--primary-border);
            }

            .nav-toggle {
                display: flex;
            }

            .nav-right {
                gap: 6px;
            }

            .nav-status {
                display: none;
            }

            .nav-bell {
                width: 32px;
                height: 32px;
            }

            .nav-cta {
                padding: 7px 14px;
                min-height: 34px;
                font-size: 13px;
            }

            .hero {
                min-height: auto;
                padding: 36px 0 32px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .hero-content .hero-subtitle {
                font-size: 14px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-panel {
                padding: 20px;
            }

            .section-title {
                font-size: 24px;
            }

            .section-subtitle {
                font-size: 14px;
            }

            .method-steps {
                grid-template-columns: 1fr;
            }

            .lottery-grid {
                grid-template-columns: 1fr;
            }

            .recommend-grid {
                grid-template-columns: 1fr;
            }

            .post-item h3 {
                font-size: 16px;
            }

            .cta-section .container {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-section .cta-text h2 {
                font-size: 22px;
            }

            .cta-section .cta-actions {
                width: 100%;
                flex-direction: column;
            }

            .cta-section .cta-actions .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                text-align: left;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-content h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 21px;
            }

            .post-item {
                padding: 14px 0;
            }

            .pagination .page-item {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
                padding: 0 8px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 56px;
            --section-gap-mobile: 44px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:active {
            transform: translateY(0);
            border-color: var(--primary-hover);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            padding: 4px 0;
            border-bottom: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .btn-text:hover {
            color: var(--primary-hover);
            border-bottom-color: var(--primary);
        }

        .btn-text .arrow {
            transition: transform var(--transition-fast);
            font-size: 16px;
            line-height: 1;
        }

        .btn-text:hover .arrow {
            transform: translateX(4px);
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.02em;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 6px;
            white-space: nowrap;
            position: relative;
            transition: all var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 1px;
            transition: width var(--transition-fast);
        }

        .nav-links a:hover {
            color: var(--primary);
            background-color: transparent;
        }

        .nav-links a:hover::after {
            width: 24px;
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 24px;
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--success);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .nav-bell {
            position: relative;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-bell:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .nav-bell svg {
            width: 18px;
            height: 18px;
        }

        .nav-bell .bell-dot {
            position: absolute;
            top: 6px;
            right: 7px;
            width: 7px;
            height: 7px;
            background-color: var(--warning);
            border-radius: 50%;
            border: 1.5px solid #fff;
        }

        .nav-cta {
            padding: 8px 18px;
            font-size: 13px;
            min-height: 36px;
            border-radius: var(--radius-button);
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            color: var(--text-body);
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background-color: currentColor;
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: #B0BEC7;
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* 分类 Hero */
        .category-hero {
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .category-hero .container {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-hero-text {
            flex: 1 1 55%;
            min-width: 300px;
        }

        .category-hero-text h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .category-hero-text .hero-sub {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
            max-width: 560px;
        }

        .category-hero-image {
            flex: 1 1 35%;
            min-width: 260px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 16 / 6;
        }

        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 分类说明区 */
        .category-intro {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: var(--shadow-sm);
        }

        .category-intro h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .category-intro p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .category-intro p:last-child {
            margin-bottom: 0;
        }

        /* 数据条 */
        .stats-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
            justify-content: space-between;
            background-color: var(--primary);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            color: #fff;
            box-shadow: var(--shadow-md);
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .stat-number {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: #fff;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.78);
        }

        /* 文章列表 - 偶数分类页：上标题下摘要纯列表 */
        .article-list-pure {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .article-item-pure {
            padding: 24px 0;
            border-bottom: 1px solid var(--border-color);
            transition: background-color var(--transition-fast);
        }

        .article-item-pure:first-child {
            padding-top: 0;
        }

        .article-item-pure:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .article-item-pure:hover {
            background-color: rgba(238, 242, 247, 0.45);
            margin: 0 -12px;
            padding-left: 12px;
            padding-right: 12px;
            border-radius: 6px;
        }

        .article-item-pure .article-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .article-item-pure .article-title a {
            color: var(--text-title);
            transition: color var(--transition-fast);
        }

        .article-item-pure .article-title a:hover {
            color: var(--primary);
        }

        .article-item-pure .article-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
            max-width: 900px;
        }

        .article-item-pure .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-item-pure .article-meta .date {
            color: var(--text-muted);
        }

        .article-item-pure .article-meta .read-link {
            font-weight: 500;
            font-size: 13px;
        }

        /* 分页 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 24px 0 8px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid var(--border-color);
            background-color: var(--bg-card);
            transition: all var(--transition-fast);
        }

        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .pagination .current {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .pagination .disabled {
            color: #B0BEC7;
            border-color: var(--border-color);
            background-color: #F5F7FA;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* 深度解读区 */
        .deep-reading {
            background-color: var(--bg-section-alt);
            border-radius: var(--radius-card);
            padding: 36px 40px;
        }

        .deep-reading h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 20px;
            line-height: 1.35;
        }

        .deep-reading p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .deep-reading p:last-child {
            margin-bottom: 0;
        }

        /* 推荐内容区 */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .recommend-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .recommend-card .recommend-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background-color: var(--bg-section-alt);
        }

        .recommend-card .recommend-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .recommend-card:hover .recommend-img img {
            transform: scale(1.03);
        }

        .recommend-card .recommend-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .recommend-card .recommend-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .recommend-card .recommend-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-title);
            line-height: 1.5;
            width: 100%;
            text-align: left;
        }

        .faq-question .faq-icon {
            font-size: 20px;
            font-weight: 400;
            color: var(--primary);
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            transition: all var(--transition-fast);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* CTA */
        .cta-box {
            background-color: var(--primary-hover);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-md);
        }

        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 24px;
        }

        .cta-box .btn-primary {
            background-color: #fff;
            color: var(--primary-hover);
            border-color: #fff;
            font-size: 16px;
            padding: 13px 28px;
            min-height: 46px;
        }

        .cta-box .btn-primary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--primary-hover);
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--primary-hover);
            color: var(--text-on-dark);
            padding: 56px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 13px;
            color: rgba(240, 244, 248, 0.7);
        }

        .footer-bottom a {
            color: rgba(240, 244, 248, 0.8);
            text-decoration: underline;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: 24px;
            }

            .footer-col:last-child {
                display: none;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --section-gap-desktop: 44px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 12px 16px;
                box-shadow: var(--shadow-md);
                gap: 2px;
            }

            .nav-links.show {
                display: flex;
            }

            .nav-links a {
                padding: 12px 10px;
                font-size: 15px;
                width: 100%;
                text-align: left;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-status,
            .nav-bell {
                display: none;
            }

            .nav-cta {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 32px;
            }

            .category-hero .container {
                flex-direction: column;
                gap: 20px;
            }

            .category-hero-text h1 {
                font-size: 24px;
            }

            .category-hero-image {
                aspect-ratio: 16 / 9;
                width: 100%;
            }

            .category-intro {
                padding: 22px 20px;
            }

            .category-intro h2 {
                font-size: 19px;
            }

            .stats-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
                padding: 20px 22px;
            }

            .stat-number {
                font-size: 30px;
            }

            .article-item-pure {
                padding: 18px 0;
            }

            .article-item-pure:hover {
                margin: 0 -6px;
                padding-left: 6px;
                padding-right: 6px;
            }

            .article-item-pure .article-title {
                font-size: 16px;
            }

            .deep-reading {
                padding: 24px 20px;
            }

            .deep-reading h3 {
                font-size: 19px;
            }

            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-box {
                padding: 32px 20px;
            }

            .cta-box h2 {
                font-size: 21px;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .section-title {
                font-size: 23px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-col:last-child {
                display: block;
            }

            .pagination a,
            .pagination span {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
                padding: 0 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .category-hero {
                padding: 32px 0 28px;
            }

            .category-hero-text h1 {
                font-size: 21px;
            }

            .category-hero-text .hero-sub {
                font-size: 14px;
            }

            .section-title {
                font-size: 20px;
            }

            .btn {
                padding: 10px 18px;
                font-size: 14px;
                min-height: 38px;
            }

            .article-item-pure .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 72px;
            --section-gap-mobile: 48px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: var(--primary-hover);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background-color: var(--bg-section-alt);
        }

        .section-dark {
            background-color: var(--primary-hover);
            color: var(--text-on-dark);
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding: 4px 0;
            border-bottom: 1.5px solid transparent;
            transition: all var(--transition-fast);
        }

        .btn-text:hover {
            color: var(--primary-hover);
            border-bottom-color: var(--primary-hover);
            gap: 10px;
        }

        .btn-text .arrow {
            display: inline-block;
            transition: transform var(--transition-fast);
            font-size: 16px;
            line-height: 1;
        }

        .btn-text:hover .arrow {
            transform: translateX(4px);
        }

        /* 导航样式 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background-color: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: #FFFFFF;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 12px;
            position: relative;
            white-space: nowrap;
            border-radius: 4px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-lighter);
        }

        .nav-links a:hover::after {
            width: 24px;
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 28px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .nav-status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--success);
            border-radius: 50%;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }

        .nav-bell {
            position: relative;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-muted);
            border-radius: 50%;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }

        .nav-bell:hover {
            background-color: var(--primary-lighter);
            color: var(--primary);
        }

        .nav-bell-dot {
            position: absolute;
            top: 7px;
            right: 8px;
            width: 7px;
            height: 7px;
            background-color: var(--warning);
            border-radius: 50%;
            border: 1.5px solid #FFFFFF;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            padding: 6px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background-color: #FFFFFF;
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            background-color: var(--primary-light);
            border-color: var(--primary-border);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background-color: var(--text-title);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            padding: 16px 24px 24px;
            z-index: 999;
            box-shadow: var(--shadow-md);
            flex-direction: column;
            gap: 4px;
        }

        .nav-mobile-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 12px 8px;
            border-radius: 6px;
            transition: all var(--transition-fast);
            border-bottom: 1px solid var(--border-color);
        }

        .nav-mobile-menu a:last-child {
            border-bottom: none;
        }

        .nav-mobile-menu a:hover {
            background-color: var(--primary-lighter);
            color: var(--primary);
        }

        .nav-mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
            background-color: var(--primary-lighter);
        }

        .nav-mobile-menu .mobile-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 12px 8px;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            margin-top: 8px;
        }

        .nav-mobile-menu .mobile-actions .nav-status {
            font-size: 13px;
        }

        .nav-mobile-menu.open {
            display: flex;
        }

        /* Hero 分类页样式 */
        .category-hero {
            position: relative;
            padding: 64px 0 56px;
            background-color: var(--primary-hover);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/coverpic/cover-5.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
            z-index: 1;
        }

        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(29, 62, 95, 0.88) 0%, rgba(29, 62, 95, 0.65) 50%, rgba(46, 90, 143, 0.45) 100%);
            z-index: 2;
        }

        .category-hero-content {
            position: relative;
            z-index: 3;
            max-width: 720px;
        }

        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.7);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .category-hero .breadcrumb a {
            color: var(--accent);
            transition: color var(--transition-fast);
        }

        .category-hero .breadcrumb a:hover {
            color: #F5C88A;
        }

        .category-hero .breadcrumb span {
            color: rgba(240, 244, 248, 0.7);
        }

        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .category-hero p {
            font-size: 16px;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 0;
        }

        .category-hero .hero-actions {
            display: flex;
            gap: 12px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .category-hero .btn-primary {
            background-color: var(--accent);
            border-color: var(--accent);
        }

        .category-hero .btn-primary:hover {
            background-color: #C47A2A;
            border-color: #C47A2A;
        }

        .category-hero .btn-secondary {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .category-hero .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: #FFFFFF;
            color: #FFFFFF;
        }

        /* 分类说明区 - 深色变体 */
        .category-intro {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0;
        }

        .category-intro .section-tag {
            background-color: rgba(217, 140, 43, 0.2);
            color: var(--accent);
        }

        .category-intro .intro-title {
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .category-intro .intro-text {
            font-size: 16px;
            color: rgba(240, 244, 248, 0.88);
            line-height: 1.8;
            max-width: 860px;
        }

        .category-intro .intro-text strong {
            color: var(--accent);
            font-weight: 600;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-top: 28px;
        }

        .intro-para {
            font-size: 15.5px;
            color: rgba(240, 244, 248, 0.85);
            line-height: 1.8;
        }

        /* 统计维度卡片区 */
        .stats-dimensions {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }

        .dimension-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px 18px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .dimension-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }

        .dimension-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .dimension-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
        }

        .dimension-desc {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .dimension-value {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        /* 文章列表 - 左图右文 */
        .article-list-section {
            background-color: var(--bg-page);
        }

        .article-item {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 20px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .article-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-border);
        }

        .article-thumb {
            width: 100%;
            height: 140px;
            border-radius: var(--radius-image);
            overflow: hidden;
            background-color: var(--bg-section-alt);
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-item:hover .article-thumb img {
            transform: scale(1.04);
        }

        .article-content {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-date {
            font-weight: 500;
        }

        .article-tag-small {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 2px 8px;
            border-radius: 3px;
        }

        .article-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
            margin-bottom: 2px;
        }

        .article-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex-grow: 1;
        }

        .article-list-section .btn-text {
            margin-top: 4px;
        }

        /* 分页器 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid var(--border-color);
            background-color: var(--bg-card);
            transition: all var(--transition-fast);
        }

        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-lighter);
        }

        .pagination .current {
            background-color: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            font-weight: 600;
        }

        .pagination .disabled {
            color: var(--text-muted);
            border-color: var(--border-color);
            background-color: var(--bg-section-alt);
            cursor: not-allowed;
            opacity: 0.6;
        }

        .pagination .pager-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 推荐内容区 */
        .recommend-section {
            background-color: var(--bg-section-alt);
        }

        .recommend-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 16px;
        }

        .recommend-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .recommend-card.featured {
            grid-row: span 1;
        }

        .recommend-thumb {
            height: 160px;
            overflow: hidden;
            background-color: var(--bg-section-alt);
        }

        .recommend-card.featured .recommend-thumb {
            height: 200px;
        }

        .recommend-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .recommend-card:hover .recommend-thumb img {
            transform: scale(1.04);
        }

        .recommend-body {
            padding: 16px 18px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex-grow: 1;
        }

        .recommend-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
        }

        .recommend-summary {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            flex-grow: 1;
        }

        /* 应用场景区 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 16px;
        }

        .scenario-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .scenario-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.05em;
        }

        .scenario-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
        }

        .scenario-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* FAQ 区 */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 18px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            cursor: pointer;
            user-select: none;
            text-align: left;
            width: 100%;
            background: none;
            border: none;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 18px 18px;
            font-size: 14.5px;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* CTA 区 */
        .cta-section {
            background-color: var(--primary-hover);
            color: var(--text-on-dark);
            text-align: center;
            padding: 64px 0;
        }

        .cta-title {
            font-size: 26px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-text {
            font-size: 15px;
            color: rgba(240, 244, 248, 0.8);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-section .btn-primary {
            background-color: var(--accent);
            border-color: var(--accent);
        }

        .cta-section .btn-primary:hover {
            background-color: #C47A2A;
            border-color: #C47A2A;
        }

        .cta-section .btn-secondary {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .cta-section .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: #FFFFFF;
            color: #FFFFFF;
        }

        /* 页脚 */
        .site-footer {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 19px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.7);
            padding: 4px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(240, 244, 248, 0.15);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 13px;
            color: rgba(240, 244, 248, 0.55);
            text-align: center;
        }

        .footer-bottom p {
            margin: 0;
        }

        .footer-bottom a {
            color: #A8C8E8;
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }
            .nav-links a {
                font-size: 13px;
                padding: 6px 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .recommend-grid {
                grid-template-columns: 1fr 1fr;
            }
            .recommend-card.featured {
                grid-column: span 2;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --section-gap-desktop: 48px;
                --section-gap-mobile: 36px;
            }

            .nav-links {
                display: none;
            }

            .nav-status {
                display: none;
            }

            .nav-bell {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-inner {
                gap: 10px;
            }

            .nav-logo-text {
                font-size: 16px;
            }

            .nav-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .section-title {
                font-size: 23px;
            }

            .category-hero {
                padding: 40px 0 36px;
                min-height: 260px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero p {
                font-size: 15px;
            }

            .category-intro {
                padding: 36px 0;
            }

            .category-intro .intro-title {
                font-size: 21px;
            }

            .article-item {
                grid-template-columns: 1fr;
                gap: 14px;
                padding: 16px;
            }

            .article-thumb {
                height: 160px;
            }

            .stats-dimensions {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .dimension-card {
                padding: 16px 14px;
            }

            .dimension-value {
                font-size: 22px;
            }

            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .recommend-card.featured {
                grid-column: span 1;
            }

            .recommend-card.featured .recommend-thumb {
                height: 160px;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-title {
                font-size: 22px;
            }

            .btn {
                font-size: 14px;
                padding: 10px 20px;
                min-height: 40px;
            }

            .container {
                padding: 0 16px;
            }

            .pagination a,
            .pagination span {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
                padding: 0 10px;
            }
        }

        @media (max-width: 520px) {
            .stats-dimensions {
                grid-template-columns: 1fr;
            }

            .dimension-card {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                text-align: left;
                gap: 12px;
            }

            .dimension-icon {
                margin-bottom: 0;
                font-size: 24px;
            }

            .dimension-info {
                flex: 1;
            }

            .dimension-value {
                font-size: 24px;
                flex-shrink: 0;
            }

            .dimension-desc {
                font-size: 12.5px;
            }

            .category-hero .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .category-hero .btn {
                width: 100%;
            }

            .recommend-thumb {
                height: 140px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #2E5A8F;
            --primary-hover: #1D3E5F;
            --primary-light: #EEF2F7;
            --primary-lighter: #F7F9FC;
            --primary-border: #D5DFE9;
            --accent: #D98C2B;
            --accent-light: #F7EBD9;
            --success: #5B8A6A;
            --warning: #A85A4A;
            --bg-page: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EEF2F7;
            --text-title: #1A2733;
            --text-body: #3D4A55;
            --text-muted: #6B7A86;
            --text-on-primary: #FFFFFF;
            --text-on-dark: #F0F4F8;
            --border-color: #E5EAF0;
            --radius-card: 10px;
            --radius-button: 7px;
            --radius-image: 8px;
            --shadow-sm: 0 1px 3px rgba(20, 40, 60, 0.08);
            --shadow-md: 0 4px 14px rgba(20, 40, 60, 0.07);
            --shadow-lg: 0 6px 18px rgba(20, 40, 60, 0.06);
            --shadow-hover: 0 8px 24px rgba(20, 40, 60, 0.10);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --max-width: 1180px;
            --nav-height: 64px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            box-sizing: border-box;
        }
        *, *::before, *::after {
            box-sizing: inherit;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-top: var(--nav-height);
            overflow-x: hidden;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }
        a:hover {
            color: var(--primary-hover);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 3px;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-gap-desktop) 0;
        }
        .section-alt {
            background-color: var(--bg-section-alt);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 24px;
            border-radius: var(--radius-button);
            transition: all var(--transition-fast);
            line-height: 1.4;
            min-height: 42px;
            text-align: center;
            border: 1px solid transparent;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            border-color: var(--primary-hover);
            color: var(--text-on-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }
        .btn-secondary {
            background-color: var(--bg-card);
            color: var(--primary);
            border: 1px solid var(--primary-border);
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            padding: 4px 2px;
            background: none;
            border: none;
            transition: gap var(--transition-fast), color var(--transition-fast);
        }
        .btn-text:hover {
            color: var(--primary-hover);
            gap: 10px;
        }
        .btn-text .arrow {
            display: inline-block;
            transition: transform var(--transition-fast);
        }
        .btn-text:hover .arrow {
            transform: translateX(4px);
        }

        /* Header/Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 18px;
            color: var(--text-title);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 0 6px;
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .status-dot {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--success);
            white-space: nowrap;
        }
        .status-dot .dot {
            width: 8px;
            height: 8px;
            background-color: var(--success);
            border-radius: 50%;
            display: inline-block;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        .notification-bell {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            flex-shrink: 0;
        }
        .notification-bell::after {
            content: '';
            position: absolute;
            top: 6px;
            right: 7px;
            width: 6px;
            height: 6px;
            background-color: var(--warning);
            border-radius: 50%;
            border: 1px solid #fff;
        }
        .bell-icon {
            font-size: 15px;
            color: var(--primary);
            line-height: 1;
        }
        .header-btn {
            font-size: 13px;
            padding: 8px 16px;
            min-height: 36px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 6px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--text-title);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Hero */
        .category-hero {
            position: relative;
            padding: 64px 0 48px;
            background-color: var(--primary-lighter);
            border-bottom: 1px solid var(--primary-border);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background-image: url('/assets/images/coverpic/cover-7.webp');
            background-size: cover;
            background-position: center right;
            opacity: 0.12;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--text-body);
            font-weight: 500;
        }
        .hero-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.35;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }
        .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 24px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 28px;
        }
        .countdown-ring {
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: conic-gradient(var(--accent) 0% 72%, var(--primary-border) 72% 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            flex-shrink: 0;
        }
        .countdown-ring::before {
            content: '';
            position: absolute;
            inset: 10px;
            background-color: #FFFFFF;
            border-radius: 50%;
        }
        .countdown-inner {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .countdown-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .countdown-label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .hero-dots {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .hero-dot-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-body);
            white-space: nowrap;
        }
        .hero-dot-item .mini-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent);
            flex-shrink: 0;
        }
        .hero-dot-item:nth-child(2) .mini-dot {
            background-color: var(--primary);
        }
        .hero-dot-item:nth-child(3) .mini-dot {
            background-color: var(--success);
        }

        /* Intro text */
        .category-intro {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 32px 32px 28px;
            box-shadow: var(--shadow-sm);
            margin-top: -32px;
            position: relative;
            z-index: 2;
        }
        .category-intro h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .category-intro p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* Article list */
        .article-list-section {
            background-color: var(--bg-page);
        }
        .article-grid {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-row {
            display: flex;
            gap: 24px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 20px 24px 20px 18px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast);
            align-items: flex-start;
        }
        .article-row:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .article-thumb {
            width: 180px;
            flex-shrink: 0;
            border-radius: var(--radius-image);
            overflow: hidden;
            aspect-ratio: 4/3;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-content {
            flex: 1;
            min-width: 0;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .article-date {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
        }
        .article-tag {
            display: inline-block;
            background-color: var(--accent-light);
            color: var(--accent);
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
        }
        .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }
        .article-row:hover .article-title {
            color: var(--primary);
        }
        .article-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        /* Pagination */
        .pagination-section {
            padding: 20px 0 48px;
        }
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .pagination li a,
        .pagination li span {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }
        .pagination li a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .pagination li.active span {
            background-color: var(--primary);
            color: var(--text-on-primary);
            border-color: var(--primary);
        }
        .pagination li.disabled span {
            color: var(--text-muted);
            opacity: 0.5;
            pointer-events: none;
        }

        /* Recommended */
        .recommended-section {
            background-color: var(--bg-section-alt);
        }
        .recommended-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .recommend-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast);
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .recommend-thumb {
            aspect-ratio: 16/10;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .recommend-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .recommend-card:hover .recommend-thumb img {
            transform: scale(1.03);
        }
        .recommend-body {
            padding: 18px 18px 20px;
        }
        .recommend-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }
        .recommend-card:hover .recommend-title {
            color: var(--primary);
        }
        .recommend-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* Stats strip */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 32px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            margin-top: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 12px 8px;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 4px;
        }

        /* FAQ */
        .faq-section {
            background-color: var(--bg-page);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 820px;
        }
        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }
        .faq-item:first-child,
        .faq-item.open {
            background-color: var(--primary-lighter);
            border-color: var(--primary-border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-title);
            cursor: pointer;
            user-select: none;
            transition: color var(--transition-fast);
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 600;
            transition: transform var(--transition-fast);
            line-height: 1;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA */
        .cta-section {
            background-color: var(--primary-hover);
            padding: 64px 0;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .cta-text p {
            font-size: 15px;
            color: rgba(240, 244, 248, 0.8);
            line-height: 1.7;
            max-width: 560px;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-dark {
            background-color: #FFFFFF;
            color: var(--primary-hover);
            border-color: #FFFFFF;
        }
        .btn-dark:hover {
            background-color: var(--bg-section-alt);
            color: var(--primary-hover);
            border-color: var(--bg-section-alt);
        }
        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(240, 244, 248, 0.45);
        }
        .btn-outline-light:hover {
            background-color: rgba(240, 244, 248, 0.1);
            border-color: var(--text-on-dark);
            color: var(--text-on-dark);
        }

        /* Deep content */
        .deep-content {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            box-shadow: var(--shadow-sm);
        }
        .deep-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .deep-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .deep-content ul {
            margin: 0 0 16px 20px;
            padding: 0;
        }
        .deep-content li {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 8px;
        }

        /* Footer */
        .site-footer {
            background-color: #1D3E5F;
            color: var(--text-on-dark);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.7;
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 244, 248, 0.75);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
            line-height: 1.6;
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(240, 244, 248, 0.2);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            align-items: center;
            font-size: 13px;
            color: rgba(240, 244, 248, 0.7);
        }
        .footer-bottom p {
            margin: 0;
        }
        .footer-bottom a {
            color: rgba(240, 244, 248, 0.85);
            text-decoration: underline;
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Mobile nav overlay */
        .nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #FFFFFF;
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            border-top: 1px solid var(--border-color);
        }
        .nav-overlay.open {
            display: flex;
        }
        .nav-overlay a {
            display: block;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-title);
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }
        .nav-overlay a:hover {
            color: var(--primary);
            padding-left: 8px;
        }
        .nav-overlay a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-overlay .overlay-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding-top: 16px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-visual {
                justify-content: flex-start;
            }
            .recommended-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .article-thumb {
                width: 140px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --section-gap-desktop: 48px;
                --max-width: 100%;
            }
            body {
                font-size: 15px;
                line-height: 1.7;
            }
            .header-inner {
                padding: 0 16px;
                gap: 12px;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .status-dot {
                display: none;
            }
            .header-btn {
                display: none;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 0 16px;
            }
            .hero-title {
                font-size: 24px;
                line-height: 1.4;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-visual {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .countdown-ring {
                width: 100px;
                height: 100px;
            }
            .countdown-number {
                font-size: 24px;
            }
            .countdown-label {
                font-size: 10px;
            }
            .section {
                padding: 36px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .category-intro {
                padding: 20px 18px;
                margin-top: -20px;
            }
            .category-intro h2 {
                font-size: 18px;
            }
            .article-row {
                flex-direction: column;
                gap: 14px;
                padding: 16px;
            }
            .article-thumb {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .article-title {
                font-size: 16px;
            }
            .recommended-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
                padding: 20px 0;
            }
            .stat-number {
                font-size: 28px;
            }
            .stat-label {
                font-size: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-text h2 {
                font-size: 20px;
            }
            .deep-content {
                padding: 24px 18px;
            }
            .deep-content h3 {
                font-size: 18px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer p {
                font-size: 13px;
            }
            .pagination li a,
            .pagination li span {
                min-width: 32px;
                height: 32px;
                font-size: 12px;
                padding: 0 6px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 20px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 24px;
            }
            .section-title {
                font-size: 20px;
            }
        }