/* roulang page: index */
:root {
            --primary: #1a3a5c;
            --primary-dark: #0f2640;
            --primary-light: #234b72;
            --accent: #c9a96e;
            --accent-dark: #b8924a;
            --accent-light: #e8d9b8;
            --accent-subtle: #faf6ef;
            --text: #2c3e50;
            --text-secondary: #5a6c7d;
            --text-muted: #8a9aaa;
            --bg: #f6f7f9;
            --bg-white: #ffffff;
            --bg-dark: #0f1f30;
            --border: #e2e7ed;
            --border-light: #eef1f5;
            --shadow-sm: 0 1px 3px rgba(15,38,64,0.06);
            --shadow: 0 2px 16px rgba(15,38,64,0.09);
            --shadow-md: 0 6px 28px rgba(15,38,64,0.12);
            --shadow-lg: 0 12px 40px rgba(15,38,64,0.16);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --sidebar-width: 250px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-light);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ========== Sidebar Navigation ========== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-white);
            border-right: 1px solid var(--border);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition);
        }
        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--border-light);
            flex-shrink: 0;
        }
        .sidebar-brand a {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .sidebar-brand a:hover {
            color: var(--primary-dark);
        }
        .sidebar-brand .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .sidebar-nav {
            flex: 1;
            padding: 16px 16px;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav .nav-item {
            list-style: none;
        }
        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            flex-shrink: 0;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .sidebar-nav .nav-link:hover {
            background: #f3f5f7;
            color: var(--primary);
        }
        .sidebar-nav .nav-link:hover i {
            color: var(--primary);
        }
        .sidebar-nav .nav-link.active {
            background: #eef3f8;
            color: var(--primary);
            font-weight: 600;
        }
        .sidebar-nav .nav-link.active i {
            color: var(--accent-dark);
        }
        .sidebar-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--border-light);
            flex-shrink: 0;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ========== Main Content ========== */
        .app-main {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Mobile Top Bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            z-index: 1035;
            align-items: center;
            padding: 0 16px;
            box-shadow: var(--shadow-sm);
        }
        .mobile-topbar .brand-text {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
            letter-spacing: 0.02em;
        }
        .mobile-topbar .menu-toggle {
            background: none;
            border: none;
            font-size: 1.35rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            margin-right: 8px;
            border-radius: 6px;
            transition: background var(--transition-fast);
        }
        .mobile-topbar .menu-toggle:hover {
            background: #f3f5f7;
        }

        /* Offcanvas sidebar for mobile */
        .offcanvas-sidebar {
            width: var(--sidebar-width) !important;
        }
        .offcanvas-sidebar .offcanvas-body {
            padding: 0;
            display: flex;
            flex-direction: column;
        }
        .offcanvas-sidebar .sidebar-nav {
            padding: 16px 16px;
        }

        /* ========== Hero Section ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(15,38,64,0.88) 0%, rgba(26,58,92,0.82) 40%, rgba(15,38,64,0.9) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #ffffff;
            padding: 90px 48px 100px;
            display: flex;
            align-items: center;
            min-height: 520px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: rgba(201,169,110,0.18);
            border: 1px solid rgba(201,169,110,0.4);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .hero-section h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            line-height: 1.3;
            margin-bottom: 18px;
            color: #ffffff;
        }
        .hero-section .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.82);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 32px;
        }
        .hero-section .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-accent {
            background: var(--accent);
            color: #1a1a1a;
            border: none;
            padding: 13px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(201,169,110,0.35);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #1a1a1a;
            box-shadow: 0 6px 22px rgba(201,169,110,0.5);
            transform: translateY(-2px);
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(201,169,110,0.3);
        }
        .btn-outline-white {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255,255,255,0.5);
            padding: 13px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-outline-white:hover {
            background: rgba(255,255,255,0.1);
            border-color: #ffffff;
            color: #ffffff;
            transform: translateY(-2px);
        }
        .btn-outline-white:active {
            transform: translateY(0);
        }

        /* ========== Section Common ========== */
        .section-padding {
            padding: 70px 40px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--accent-dark);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1.02rem;
            line-height: 1.7;
            max-width: 640px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.centered {
            text-align: center;
        }
        .section-header.centered .section-desc {
            margin: 0 auto;
        }

        /* ========== Feature Cards ========== */
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent-light);
        }
        .feature-card .card-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .feature-card .card-icon-wrap i {
            font-size: 1.4rem;
            color: var(--accent-dark);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.65;
            margin-bottom: 0;
            flex: 1;
        }
        .feature-card .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 18px;
            aspect-ratio: 16/10;
            object-fit: cover;
            width: 100%;
        }

        /* ========== News List ========== */
        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            margin-bottom: 12px;
            align-items: flex-start;
        }
        .news-list-item:hover {
            box-shadow: var(--shadow);
            border-color: #dde4eb;
            transform: translateX(3px);
        }
        .news-list-item .news-thumb {
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: #eef1f5;
        }
        .news-list-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-list-item .news-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 500;
            background: #eef3f8;
            color: var(--primary);
            padding: 3px 10px;
            border-radius: 50px;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .news-list-item h4 {
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 5px;
            line-height: 1.4;
        }
        .news-list-item h4 a {
            color: var(--text);
            transition: color var(--transition-fast);
        }
        .news-list-item h4 a:hover {
            color: var(--primary);
        }
        .news-list-item .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-empty-state {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ========== Stats Block ========== */
        .stats-section {
            background: var(--bg-dark);
            color: #ffffff;
            padding: 60px 40px;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--accent-light);
            letter-spacing: 0.02em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        /* ========== Category Entry Card ========== */
        .category-entry-card {
            display: flex;
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
        }
        .category-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .category-entry-card .card-img-side {
            width: 40%;
            min-height: 240px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .category-entry-card .card-body-side {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .category-entry-card h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .category-entry-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 18px;
        }
        .btn-arrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.92rem;
            transition: gap var(--transition-fast);
        }
        .btn-arrow:hover {
            gap: 14px;
            color: var(--primary-dark);
        }
        .btn-arrow i {
            font-size: 0.75rem;
        }

        /* ========== Testimonials ========== */
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--accent-light);
            margin-bottom: 12px;
            opacity: 0.7;
        }
        .testimonial-card .quote-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-card .quote-author {
            font-weight: 600;
            color: var(--text);
            font-size: 0.88rem;
        }
        .testimonial-card .quote-role {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ========== FAQ Accordion ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text);
            background: var(--bg-white);
            padding: 18px 22px;
            box-shadow: none;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: #f9fafb;
            color: var(--primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(201,169,110,0.25);
            border-color: var(--accent);
        }
        .faq-accordion .accordion-button::after {
            transition: transform var(--transition);
        }
        .faq-accordion .accordion-body {
            padding: 16px 22px 22px;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
            background: var(--bg-white);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            color: #ffffff;
            padding: 64px 40px;
            text-align: center;
            border-radius: 0;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            color: rgba(255,255,255,0.78);
            font-size: 1.02rem;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 40px 40px 24px;
            font-size: 0.88rem;
            line-height: 1.7;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            color: #ffffff;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }
        .site-footer a {
            color: rgba(255,255,255,0.7);
            transition: color var(--transition-fast);
        }
        .site-footer a:hover {
            color: var(--accent-light);
        }
        .site-footer .footer-divider {
            border-top: 1px solid rgba(255,255,255,0.12);
            margin-top: 24px;
            padding-top: 16px;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.45);
            text-align: center;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1199.98px) {
            .hero-section {
                padding: 60px 32px 70px;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .section-padding {
                padding: 50px 28px;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .category-entry-card .card-img-side {
                width: 36%;
            }
        }
        @media (max-width: 991.98px) {
            .app-sidebar {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .app-main {
                margin-left: 0;
                padding-top: 56px;
            }
            .hero-section {
                padding: 50px 24px 60px;
                min-height: 400px;
            }
            .hero-section h1 {
                font-size: 1.85rem;
            }
            .hero-section .hero-subtitle {
                font-size: 1rem;
            }
            .section-padding {
                padding: 40px 20px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .category-entry-card {
                flex-direction: column;
            }
            .category-entry-card .card-img-side {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-list-item .news-thumb {
                width: 100%;
                height: 160px;
            }
            .stats-section {
                padding: 40px 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 575.98px) {
            .hero-section {
                padding: 40px 16px 48px;
                min-height: 360px;
            }
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .hero-section .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-section .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-section .hero-actions .btn-accent,
            .hero-section .hero-actions .btn-outline-white {
                width: 100%;
                text-align: center;
            }
            .section-padding {
                padding: 32px 14px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .feature-card {
                padding: 22px 18px;
            }
            .cta-section {
                padding: 40px 16px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .site-footer {
                padding: 28px 16px 18px;
            }
            .testimonial-card {
                padding: 20px 18px;
            }
            .faq-accordion .accordion-button {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
        }

/* roulang page: article */
:root {
            --sidebar-width: 250px;
            --sidebar-bg: #0f172a;
            --sidebar-hover: #1e293b;
            --sidebar-active: #1e3a5f;
            --sidebar-text: #cbd5e1;
            --sidebar-text-active: #ffffff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --primary: #1e40af;
            --primary-light: #dbeafe;
            --primary-dark: #1e3a5f;
            --text-main: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-soft: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
            --shadow-card: 0 2px 8px rgba(0,0,0,0.06);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.2s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-body);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text-main);
            line-height: 1.35;
            margin-top: 0;
        }

        h1 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.5rem;
            font-weight: 700;
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 600;
        }

        .app-layout {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            border-right: 1px solid rgba(255,255,255,0.06);
            transition: transform 0.3s ease;
        }

        .sidebar-brand {
            padding: 24px 20px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 8px;
        }

        .sidebar-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            text-decoration: none;
            letter-spacing: 0.03em;
            font-family: var(--font-heading);
        }

        .sidebar-brand a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .sidebar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 8px 12px;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-nav .nav-item {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 16px;
            border-radius: var(--radius-sm);
            color: var(--sidebar-text);
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 0.9rem;
            opacity: 0.75;
            flex-shrink: 0;
        }

        .sidebar-nav .nav-link:hover {
            background: var(--sidebar-hover);
            color: #ffffff;
            text-decoration: none;
        }

        .sidebar-nav .nav-link:hover i {
            opacity: 1;
        }

        .sidebar-nav .nav-link.active {
            background: var(--sidebar-active);
            color: var(--sidebar-text-active);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
        }

        .sidebar-nav .nav-link.active i {
            opacity: 1;
            color: var(--accent);
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.8rem;
            color: rgba(255,255,255,0.35);
            text-align: center;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            transition: margin-left 0.3s ease;
        }

        .main-content-inner {
            flex: 1;
            padding: 0;
        }

        /* 移动端顶部栏 */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--sidebar-bg);
            padding: 12px 16px;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .mobile-topbar .mobile-brand {
            font-weight: 700;
            color: #fff;
            font-size: 1.1rem;
            text-decoration: none;
            font-family: var(--font-heading);
            letter-spacing: 0.03em;
        }

        .mobile-topbar .btn-menu {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-topbar .btn-menu:hover {
            background: var(--sidebar-hover);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrapper {
            padding: 20px 0 8px;
            background: transparent;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb-custom a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb-custom .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
            margin: 0 2px;
        }

        .breadcrumb-custom .current {
            color: var(--text-main);
            font-weight: 500;
            pointer-events: none;
        }

        /* ===== 文章主体 ===== */
        .article-container {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            margin-bottom: 32px;
        }

        .article-featured-image {
            width: 100%;
            max-height: 440px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border-light);
        }

        .article-body {
            padding: 32px 36px 40px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .article-meta .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            white-space: nowrap;
        }

        .article-meta .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--text-muted);
        }

        .article-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .article-divider {
            border: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary) 0%, transparent 100%);
            margin: 20px 0 24px;
            opacity: 0.3;
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-main);
            word-break: break-word;
        }

        .article-content p {
            margin-bottom: 1.2em;
        }

        .article-content h2 {
            font-size: 1.4rem;
            margin-top: 2em;
            margin-bottom: 0.8em;
            color: var(--text-main);
        }

        .article-content h3 {
            font-size: 1.15rem;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--primary-dark);
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.5em;
            margin-bottom: 1.2em;
        }

        .article-content li {
            margin-bottom: 0.4em;
        }

        /* ===== 文章底部标签 ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }

        .article-tags .tag {
            display: inline-block;
            background: var(--bg-soft);
            color: var(--text-secondary);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            transition: all var(--transition);
            text-decoration: none;
        }

        .article-tags .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            text-decoration: none;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            margin-bottom: 40px;
        }

        .related-section .section-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .related-section .section-title::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 22px;
            background: var(--accent);
            border-radius: 2px;
        }

        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-img-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

        .related-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .related-card:hover .card-img-wrapper img {
            transform: scale(1.05);
        }

        .related-card .card-body-custom {
            padding: 16px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-title-custom {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .related-card .card-title-custom a {
            color: var(--text-main);
            text-decoration: none;
        }

        .related-card .card-title-custom a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .related-card .card-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* ===== 未找到内容 ===== */
        .not-found-state {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-state .icon-wrapper {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2rem;
            color: var(--text-muted);
        }

        .not-found-state h2 {
            margin-bottom: 10px;
        }

        .not-found-state p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: 30px;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
        }

        .btn-back-home:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--sidebar-bg);
            color: rgba(255,255,255,0.75);
            padding: 36px 0 24px;
            margin-top: auto;
            border-top: 1px solid rgba(255,255,255,0.06);
        }

        .site-footer .footer-brand {
            font-weight: 700;
            font-size: 1.1rem;
            color: #ffffff;
            margin-bottom: 4px;
            font-family: var(--font-heading);
            letter-spacing: 0.03em;
        }

        .site-footer a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: color var(--transition);
            font-size: 0.9rem;
        }

        .site-footer a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .site-footer .footer-divider {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 20px;
            padding-top: 16px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
            text-align: center;
        }

        /* ===== 侧边栏遮罩（移动端） ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.55);
            z-index: 1035;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .sidebar-overlay.show {
            display: block;
            opacity: 1;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-lg);
            }

            .sidebar-overlay.show {
                display: block;
                opacity: 1;
            }

            .main-content {
                margin-left: 0 !important;
            }

            .mobile-topbar {
                display: flex;
            }

            .article-body {
                padding: 20px 18px 28px;
            }

            .article-title {
                font-size: 1.5rem;
            }

            .article-content {
                font-size: 1rem;
            }

            h1 {
                font-size: 1.5rem;
            }
        }

        @media (min-width: 992px) {
            .sidebar-overlay {
                display: none !important;
            }

            .sidebar {
                transform: translateX(0) !important;
            }

            .mobile-topbar {
                display: none;
            }
        }

        @media (max-width: 767.98px) {
            .article-body {
                padding: 16px 14px 24px;
            }

            .article-title {
                font-size: 1.35rem;
            }

            .article-meta {
                gap: 8px;
                font-size: 0.8rem;
            }

            .related-section .section-title {
                font-size: 1.15rem;
            }

            .breadcrumb-wrapper {
                padding: 12px 0 4px;
            }

            .breadcrumb-custom {
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3a5c;
            --color-primary-light: #1f4d7a;
            --color-primary-dark: #0f2840;
            --color-accent: #c9a96e;
            --color-accent-light: #d9bd8a;
            --color-accent-dark: #b8944f;
            --color-bg: #f7f8fa;
            --color-bg-white: #ffffff;
            --color-bg-dark: #0f1f30;
            --color-text: #2c3e50;
            --color-text-light: #5a6d7e;
            --color-text-muted: #8a9aaa;
            --color-text-inverse: #e8ecf1;
            --color-border: #dfe4ea;
            --color-border-light: #eef1f5;
            --color-success: #2ecc71;
            --color-warning: #f39c12;
            --color-danger: #e74c3c;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 12px 48px rgba(0,0,0,0.12);
            --sidebar-width: 240px;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-light);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* ========== App Shell 布局 ========== */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, var(--color-primary-light) 100%);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-lg);
            transition: transform var(--transition-slow), box-shadow var(--transition-slow);
        }

        .sidebar-brand {
            padding: 28px 22px 20px 22px;
            border-bottom: 1px solid rgba(255,255,255,0.10);
            flex-shrink: 0;
        }
        .sidebar-brand a {
            color: #ffffff;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            font-family: var(--font-heading);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: opacity var(--transition-fast);
        }
        .sidebar-brand a:hover {
            opacity: 0.85;
            color: #ffffff;
        }
        .sidebar-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }
        .sidebar-nav .nav-item {
            list-style: none;
            margin: 0;
        }
        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            color: rgba(255,255,255,0.75);
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
            position: relative;
        }
        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-link:hover {
            background: rgba(255,255,255,0.08);
            color: #ffffff;
        }
        .sidebar-nav .nav-link.active,
        .sidebar-nav .nav-link[aria-current="page"] {
            background: rgba(255,255,255,0.14);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
        }
        .sidebar-nav .nav-link.active::before {
            content: '';
            position: absolute;
            left: -4px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--color-accent);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-footer-info {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.10);
            flex-shrink: 0;
        }
        .sidebar-footer-info .sidebar-domain {
            color: rgba(255,255,255,0.45);
            font-size: 0.78rem;
            letter-spacing: 0.03em;
        }

        /* 移动端顶部栏 */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--color-primary);
            z-index: 1035;
            align-items: center;
            padding: 0 16px;
            box-shadow: var(--shadow-md);
        }
        .mobile-topbar .mobile-brand {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.03em;
            font-family: var(--font-heading);
        }
        .mobile-topbar .menu-toggle {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            margin-right: 12px;
        }
        .mobile-topbar .menu-toggle:hover {
            background: rgba(255,255,255,0.10);
        }

        /* 侧边栏遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 1038;
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* 主内容区 */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* ========== 板块通用样式 ========== */
        .section-block {
            padding: 64px 0;
        }
        .section-block.bg-white {
            background-color: var(--color-bg-white);
        }
        .section-block.bg-light {
            background-color: var(--color-bg);
        }
        .section-block.bg-dark {
            background-color: var(--color-bg-dark);
            color: var(--color-text-inverse);
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .bg-dark .section-title {
            color: #ffffff;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 680px;
        }
        .bg-dark .section-subtitle {
            color: rgba(255,255,255,0.65);
        }
        .section-divider {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 16px 0 28px 0;
        }
        .section-divider.center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== Hero 板块 ========== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1a4568 100%);
            overflow: hidden;
            color: #ffffff;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 1;
        }
        .category-hero .hero-inner {
            position: relative;
            z-index: 2;
        }
        .category-hero .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .category-hero .breadcrumb-custom a {
            color: rgba(255,255,255,0.8);
            transition: color var(--transition-fast);
        }
        .category-hero .breadcrumb-custom a:hover {
            color: var(--color-accent-light);
        }
        .category-hero .breadcrumb-custom .separator {
            color: rgba(255,255,255,0.4);
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
        }
        .category-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
            color: #ffffff;
            line-height: 1.25;
        }
        .category-hero .hero-description {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.78);
            line-height: 1.75;
            max-width: 620px;
            margin-bottom: 28px;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stat-item {
            text-align: left;
        }
        .category-hero .hero-stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-accent-light);
            line-height: 1;
        }
        .category-hero .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

        /* ========== 卡片组件 ========== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent-light);
        }
        .feature-card .card-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            background: rgba(26,58,92,0.06);
            color: var(--color-primary);
            transition: all var(--transition-base);
        }
        .feature-card:hover .card-icon-wrap {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* 场景卡片 */
        .scenario-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .scenario-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .scenario-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .scenario-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .scenario-card .card-body-custom {
            padding: 20px 22px;
        }
        .scenario-card h3 {
            font-family: var(--font-heading);
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .scenario-card p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 流程步骤 ========== */
        .process-step {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 16px;
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 2;
            transition: all var(--transition-base);
        }
        .process-step:hover .step-number {
            background: var(--color-accent);
            transform: scale(1.08);
        }
        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.55;
            margin-bottom: 0;
        }
        .process-connector {
            position: absolute;
            top: 44px;
            left: calc(50% + 40px);
            width: calc(100% - 80px);
            height: 2px;
            background: var(--color-border);
            z-index: 1;
        }
        .process-step:last-child .process-connector {
            display: none;
        }

        /* ========== FAQ 折叠 ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-fast);
        }
        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: #fff;
            padding: 16px 20px;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            box-shadow: none;
            letter-spacing: 0.02em;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: rgba(26,58,92,0.03);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(201,169,110,0.25);
            border-color: var(--color-accent);
        }
        .faq-accordion .accordion-body {
            padding: 8px 20px 18px 20px;
            font-size: 0.93rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .faq-accordion .accordion-button::after {
            transition: transform var(--transition-base);
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 1;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.78);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        /* ========== 按钮系统 ========== */
        .btn-brand {
            display: inline-block;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 28px;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            cursor: pointer;
            text-align: center;
            border: none;
            font-family: var(--font-body);
        }
        .btn-brand-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(201,169,110,0.35);
        }
        .btn-brand-primary:hover {
            background: var(--color-accent-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(201,169,110,0.45);
            transform: translateY(-1px);
        }
        .btn-brand-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-brand-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-brand-white {
            background: #fff;
            color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(0,0,0,0.10);
        }
        .btn-brand-white:hover {
            background: #f0f3f6;
            color: var(--color-primary-dark);
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
            transform: translateY(-1px);
        }
        .btn-brand-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
            border-radius: 30px;
        }
        .btn-brand-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
            border-radius: 22px;
        }

        /* ========== 标签徽章 ========== */
        .tag-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.78rem;
            font-weight: 500;
            border-radius: 14px;
            letter-spacing: 0.03em;
            background: rgba(26,58,92,0.06);
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }
        .tag-badge:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .tag-badge.accent {
            background: rgba(201,169,110,0.15);
            color: #8b6f3a;
        }
        .tag-badge.accent:hover {
            background: var(--color-accent);
            color: #fff;
        }

        /* ========== 资讯列表 ========== */
        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            padding-left: 6px;
        }
        .news-list-item .news-thumb {
            width: 90px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: #eef1f5;
        }
        .news-list-item .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-list-item .news-info h5 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .news-list-item .news-info .news-date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
            font-size: 0.9rem;
            margin-top: auto;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        .site-footer a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .site-footer a:hover {
            color: var(--color-accent-light);
        }
        .footer-divider {
            border-top: 1px solid rgba(255,255,255,0.12);
            margin-top: 28px;
            padding-top: 16px;
            color: rgba(255,255,255,0.40);
            font-size: 0.82rem;
            text-align: center;
        }

        /* ========== 内容容器 ========== */
        .content-container {
            max-width: 1040px;
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (min-width: 1400px) {
            .content-container {
                max-width: 1140px;
            }
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .process-connector {
                left: calc(50% + 30px);
                width: calc(100% - 60px);
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-xl);
            }
            .sidebar-overlay.show {
                display: block;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .hero-description {
                font-size: 0.95rem;
            }
            .category-hero .hero-stats {
                gap: 18px;
            }
            .category-hero .hero-stat-number {
                font-size: 1.5rem;
            }
            .section-block {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .content-container {
                padding: 0 16px;
            }
            .process-connector {
                display: none;
            }
            .process-step {
                padding: 14px 10px;
            }
            .feature-card {
                padding: 20px 16px;
            }
            .site-footer {
                padding: 32px 0 20px;
                text-align: center;
            }
            .site-footer .row > div {
                margin-bottom: 16px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero .hero-stats {
                gap: 12px;
                flex-direction: column;
            }
            .category-hero .hero-stat-item {
                text-align: left;
            }
            .category-hero .hero-stat-number {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .btn-brand-lg {
                padding: 12px 26px;
                font-size: 0.95rem;
            }
            .scenario-card .card-img-wrap {
                height: 160px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-list-item .news-thumb {
                width: 100%;
                height: 140px;
            }
        }