/* roulang page: index */
:root {
            --sidebar-width: 250px;
            --sidebar-bg: #080d1f;
            --sidebar-hover: #111a35;
            --sidebar-active: #162044;
            --sidebar-text: #bcc5de;
            --sidebar-text-active: #e8d5a3;
            --gold: #c8a45c;
            --gold-light: #e0c88a;
            --gold-dark: #a07830;
            --primary: #1a2a4a;
            --primary-light: #253a63;
            --accent: #3a6fb5;
            --bg: #f6f7fa;
            --bg-alt: #eef0f5;
            --white: #ffffff;
            --text: #1a1d28;
            --text-secondary: #545a6e;
            --text-muted: #818699;
            --border: #dde0e8;
            --border-light: #eef0f5;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.18);
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1100px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: row;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-slow), box-shadow var(--transition-slow);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

        .sidebar-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #e8d5a3;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .sidebar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: radial-gradient(circle at 40% 35%, #e8d5a3 0%, #c8a45c 50%, #8a5c20 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #0a0e1a;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(200, 164, 92, 0.3);
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--sidebar-text);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .sidebar-nav a:hover {
            background: var(--sidebar-hover);
            color: #d5cef0;
        }

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

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            opacity: 0.75;
        }

        .sidebar-nav a.active i {
            opacity: 1;
            color: var(--gold-light);
        }

        .sidebar-footer {
            padding: 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

        .sidebar-footer .copyright {
            font-size: 0.75rem;
            color: #5a6080;
            line-height: 1.6;
        }

        /* ========== MAIN CONTENT ========== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== MOBILE HEADER ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--sidebar-bg);
            padding: 14px 18px;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-header .mobile-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: #e8d5a3;
            font-size: 1rem;
        }

        .mobile-header .mobile-brand .brand-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: radial-gradient(circle at 40% 35%, #e8d5a3 0%, #c8a45c 50%, #8a5c20 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: #0a0e1a;
            flex-shrink: 0;
        }

        .menu-toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            z-index: 1001;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: #c8cde0;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            transition: opacity var(--transition-slow);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 80px 40px 90px;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 13, 31, 0.88) 0%, rgba(15, 25, 50, 0.7) 40%, rgba(8, 13, 31, 0.82) 100%);
            z-index: 1;
        }

        .hero .hero-inner {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            width: 100%;
        }

        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 30px;
            background: rgba(200, 164, 92, 0.18);
            border: 1px solid rgba(200, 164, 92, 0.35);
            color: var(--gold-light);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 22px;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
            line-height: 1.25;
            max-width: 700px;
        }

        .hero h1 .highlight {
            color: var(--gold-light);
        }

        .hero p.hero-sub {
            font-size: 1.15rem;
            color: #c8cde0;
            max-width: 580px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--gold);
            color: #0a0e1a;
            box-shadow: 0 4px 18px rgba(200, 164, 92, 0.35);
        }

        .btn-primary:hover {
            background: var(--gold-light);
            box-shadow: 0 6px 24px rgba(200, 164, 92, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 64px 40px;
        }

        .section-inner {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.2px;
        }

        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 500px;
            margin: 0 auto;
        }

        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(200, 164, 92, 0.1);
            color: var(--gold-dark);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #d5cfe8;
        }

        .feature-card .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            flex-shrink: 0;
        }

        .feature-card .feature-icon.blue {
            background: #e8f0fb;
            color: #3a6fb5;
        }

        .feature-card .feature-icon.gold {
            background: #fdf6ea;
            color: #c8a45c;
        }

        .feature-card .feature-icon.teal {
            background: #e6f7f4;
            color: #2ea891;
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            background: var(--white);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .category-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .category-card .card-body {
            padding: 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .category-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }

        .category-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--gold-dark);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 6px;
            transition: gap var(--transition);
        }

        .category-card .card-link:hover {
            gap: 10px;
        }

        /* ========== CMS LIST ========== */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .cms-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cms-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #d0c8e5;
        }

        .cms-item .cms-meta {
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
            align-items: center;
        }

        .cms-item .cms-cat {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            background: rgba(200, 164, 92, 0.1);
            color: var(--gold-dark);
            font-weight: 600;
            font-size: 0.75rem;
        }

        .cms-item h4 {
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.4;
        }

        .cms-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        .cms-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ========== STATS ========== */
        .stats-section {
            background: var(--primary);
            color: #fff;
            padding: 56px 40px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            max-width: var(--max-width);
            margin: 0 auto;
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--gold-light);
            letter-spacing: 0.5px;
        }

        .stat-item .stat-label {
            font-size: 0.9rem;
            color: #bcc5de;
            margin-top: 4px;
        }

        /* ========== HIGHLIGHTS ========== */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .highlight-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .highlight-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .highlight-card .highlight-body {
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .highlight-card .highlight-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }

        .highlight-card .highlight-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item details {
            cursor: pointer;
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            list-style: none;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-arrow {
            font-size: 0.75rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item details[open] summary .faq-arrow {
            transform: rotate(180deg);
            color: var(--gold);
        }

        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-alt);
            padding: 60px 40px;
            text-align: center;
        }

        .cta-section .cta-inner {
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0d1225;
            color: #bcc5de;
            padding: 40px;
            text-align: center;
        }

        .site-footer .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .site-footer .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #e8d5a3;
            margin-bottom: 8px;
        }

        .site-footer .footer-desc {
            font-size: 0.85rem;
            color: #7a80a0;
            margin-bottom: 12px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .site-footer .footer-copy {
            font-size: 0.78rem;
            color: #5a6080;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .features-grid,
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cms-list {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .highlights-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section {
                padding: 48px 28px;
            }
            .hero {
                padding: 60px 28px 70px;
                min-height: 420px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
                width: 260px;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-xl);
            }
            .sidebar-overlay {
                display: block;
                opacity: 0;
                pointer-events: none;
            }
            .sidebar-overlay.visible {
                opacity: 1;
                pointer-events: auto;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .mobile-header {
                display: flex;
            }
            .hero {
                padding: 40px 20px 50px;
                min-height: 380px;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p.hero-sub {
                font-size: 0.95rem;
            }
            .section {
                padding: 36px 18px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .features-grid,
            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cms-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }
            .hero-actions {
                gap: 10px;
            }
            .stats-section {
                padding: 36px 18px;
            }
            .cta-section {
                padding: 40px 18px;
            }
            .site-footer {
                padding: 28px 18px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero p.hero-sub {
                font-size: 0.85rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .feature-card,
            .category-card .card-body,
            .highlight-card .highlight-body {
                padding: 16px 14px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.82rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a1f3c;
            --primary-light: #252b50;
            --primary-dark: #11142a;
            --accent: #d4a853;
            --accent-light: #e8c97a;
            --accent-dark: #b8923a;
            --bg: #f8f9fb;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-sidebar: #1a1f3c;
            --bg-sidebar-hover: #252b50;
            --bg-section-alt: #eef1f7;
            --text: #1e2233;
            --text-secondary: #5a5f72;
            --text-light: #8b8fa3;
            --text-on-dark: #e0e2eb;
            --text-on-dark-muted: #a8acbe;
            --border: #e2e5ed;
            --border-light: #eef0f5;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-accent: 0 4px 18px rgba(212, 168, 83, 0.25);
            --transition: 0.22s ease;
            --transition-slow: 0.35s ease;
            --sidebar-width: 248px;
            --sidebar-collapsed-width: 0px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
            --font-size-xs: 0.78rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-md: 1.1rem;
            --font-size-lg: 1.25rem;
            --font-size-xl: 1.5rem;
            --font-size-2xl: 2rem;
            --font-size-3xl: 2.6rem;
            --font-size-hero: 3rem;
            --line-height-base: 1.7;
            --line-height-heading: 1.25;
            --section-gap: 80px;
            --section-gap-sm: 48px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text);
            background: var(--bg);
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition);
        }
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: var(--line-height-heading);
            color: var(--text);
            font-weight: 700;
        }

        /* Sidebar Overlay */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 90;
            transition: opacity var(--transition);
        }
        .sidebar-overlay.active {
            display: block;
        }

        /* Sidebar */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-slow);
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
        }
        .sidebar-logo {
            padding: 28px 22px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }
        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: var(--font-size-lg);
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }
        .sidebar-logo a:hover {
            color: var(--accent-light);
        }
        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #1a1f3c;
            flex-shrink: 0;
        }
        .sidebar-nav {
            flex: 1;
            padding: 18px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 13px 16px;
            border-radius: var(--radius);
            color: var(--text-on-dark-muted);
            font-size: var(--font-size-sm);
            font-weight: 500;
            letter-spacing: 0.015em;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .sidebar-nav a:hover {
            background: var(--bg-sidebar-hover);
            color: #ffffff;
            transform: translateX(2px);
        }
        .sidebar-nav a.active {
            background: rgba(212, 168, 83, 0.15);
            color: var(--accent-light);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
            border-radius: var(--radius);
        }
        .sidebar-nav a.active:hover {
            background: rgba(212, 168, 83, 0.22);
            color: var(--accent-light);
            transform: none;
        }
        .sidebar-footer-info {
            padding: 16px 22px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }
        .sidebar-footer-info p {
            color: var(--text-on-dark-muted);
            font-size: var(--font-size-xs);
            line-height: 1.5;
            margin: 0;
        }

        /* Main Content */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            transition: margin var(--transition-slow);
        }

        /* Mobile Toggle */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 14px;
            left: 14px;
            z-index: 110;
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            background: var(--bg-sidebar);
            color: #ffffff;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow-lg);
        }
        .mobile-toggle:active {
            transform: scale(0.94);
        }

        /* Section Base */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 40px;
        }
        .section-label {
            display: inline-block;
            font-size: var(--font-size-xs);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-dark);
            background: rgba(212, 168, 83, 0.10);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: var(--font-size-md);
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .section-subtitle {
            margin: 0 auto;
        }
        .text-center {
            text-align: center;
        }
        .text-accent {
            color: var(--accent-dark);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 100px 0 90px;
            background: var(--bg-sidebar);
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(170deg, rgba(26, 31, 60, 0.88) 0%, rgba(26, 31, 60, 0.7) 40%, rgba(17, 20, 42, 0.9) 100%);
            z-index: 1;
        }
        .hero .section-container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 20px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 168, 83, 0.18);
            border: 1px solid rgba(212, 168, 83, 0.35);
            color: var(--accent-light);
            padding: 7px 18px;
            border-radius: 24px;
            font-size: var(--font-size-xs);
            font-weight: 600;
            letter-spacing: 0.04em;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: var(--font-size-hero);
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            max-width: 700px;
            line-height: 1.15;
            margin: 0;
        }
        .hero h1 .highlight {
            color: var(--accent-light);
            position: relative;
        }
        .hero-desc {
            font-size: var(--font-size-lg);
            color: var(--text-on-dark-muted);
            max-width: 560px;
            line-height: 1.65;
            margin: 0;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 8px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: var(--font-size-sm);
            font-weight: 600;
            border-radius: 28px;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
            justify-content: center;
            border: 2px solid transparent;
        }
        .btn:active {
            transform: scale(0.96);
        }
        .btn-primary {
            background: var(--accent);
            color: #1a1f3c;
            border-color: var(--accent);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            box-shadow: 0 6px 24px rgba(212, 168, 83, 0.35);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.45);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #ffffff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: var(--font-size-xs);
            border-radius: 22px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: var(--font-size-base);
            border-radius: 32px;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .card-icon.accent {
            background: rgba(212, 168, 83, 0.12);
            color: var(--accent-dark);
        }
        .card-icon.blue {
            background: rgba(37, 43, 80, 0.1);
            color: var(--primary-light);
        }
        .card-icon.teal {
            background: rgba(45, 140, 140, 0.1);
            color: #2d8c8c;
        }
        .card-icon.purple {
            background: rgba(110, 80, 160, 0.1);
            color: #6e50a0;
        }
        .card h3 {
            font-size: var(--font-size-md);
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }
        .card p {
            font-size: var(--font-size-sm);
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
            flex: 1;
        }
        .card-image {
            border-radius: var(--radius);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-section-alt);
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-image img {
            transform: scale(1.04);
        }

        /* Service Highlight Card */
        .highlight-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .highlight-card .card-img-wrap {
            aspect-ratio: 3 / 2;
            overflow: hidden;
            background: var(--bg-section-alt);
        }
        .highlight-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .highlight-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .highlight-card .card-body {
            padding: 24px 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .highlight-card .card-body h3 {
            font-size: var(--font-size-md);
            font-weight: 700;
            margin: 0;
        }
        .highlight-card .card-body p {
            font-size: var(--font-size-sm);
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Steps / Timeline */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            counter-reset: step-counter;
        }
        .step-item {
            position: relative;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 22px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            text-align: center;
            transition: all var(--transition);
            counter-increment: step-counter;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: #1a1f3c;
            font-weight: 800;
            font-size: var(--font-size-lg);
            margin-bottom: 12px;
            box-shadow: var(--shadow-accent);
        }
        .step-item h4 {
            font-size: var(--font-size-base);
            font-weight: 700;
            margin: 0 0 6px;
        }
        .step-item p {
            font-size: var(--font-size-xs);
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        /* Stats Row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 18px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-dark);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: var(--font-size-xs);
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            background: none;
            padding: 20px 24px;
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            text-align: left;
            border: none;
            outline: none;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-dark);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 168, 83, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--accent-dark);
            transition: all var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #1a1f3c;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: var(--font-size-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-sidebar);
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .cta-section .section-container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 70px 40px;
        }
        .cta-section h2 {
            font-size: var(--font-size-2xl);
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-on-dark-muted);
            font-size: var(--font-size-md);
            max-width: 580px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .btn-primary {
            font-size: var(--font-size-base);
            padding: 15px 38px;
        }

        /* Alt Background Section */
        .section-alt {
            background: var(--bg-section-alt);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-on-dark-muted);
            padding: 40px 0;
            margin-top: auto;
        }
        .site-footer .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 40px;
            text-align: center;
        }
        .footer-brand {
            font-size: var(--font-size-lg);
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .footer-desc {
            font-size: var(--font-size-sm);
            color: var(--text-on-dark-muted);
            max-width: 500px;
            margin: 0 auto 12px;
            line-height: 1.6;
        }
        .footer-copy {
            font-size: var(--font-size-xs);
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 230px;
                --section-gap: 60px;
                --section-gap-sm: 36px;
                --font-size-hero: 2.4rem;
                --font-size-2xl: 1.75rem;
            }
            .section-container {
                padding: 0 28px;
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero {
                padding: 70px 0 60px;
                min-height: 380px;
            }
            .hero h1 {
                max-width: 560px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --sidebar-width: 260px;
                --section-gap: 48px;
                --section-gap-sm: 30px;
                --font-size-hero: 2rem;
                --font-size-2xl: 1.5rem;
                --font-size-3xl: 1.8rem;
            }
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.3);
            }
            .sidebar-overlay.active {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-toggle {
                display: flex;
            }
            .section-container {
                padding: 0 20px;
            }
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .hero {
                padding: 80px 0 50px;
                min-height: 340px;
                text-align: center;
            }
            .hero .section-container {
                align-items: center;
            }
            .hero h1 {
                max-width: 100%;
                font-size: 1.8rem;
            }
            .hero-desc {
                max-width: 100%;
                font-size: var(--font-size-base);
            }
            .hero-actions {
                justify-content: center;
            }
            .site-footer .footer-inner {
                padding: 0 20px;
            }
            .cta-section .section-container {
                padding: 48px 20px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --font-size-hero: 1.55rem;
                --font-size-2xl: 1.3rem;
            }
            .hero {
                padding: 70px 0 40px;
                min-height: 300px;
            }
            .hero h1 {
                font-size: 1.45rem;
            }
            .hero-desc {
                font-size: var(--font-size-sm);
            }
            .btn {
                padding: 11px 20px;
                font-size: var(--font-size-xs);
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .card {
                padding: 22px 18px;
            }
            .section-container {
                padding: 0 14px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: var(--font-size-sm);
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: var(--font-size-sm);
            }
        }

/* roulang page: article */
:root {
            --sidebar-width: 270px;
            --sidebar-bg: #0b0d17;
            --sidebar-bg-lighter: #141827;
            --sidebar-text: #c5c8d4;
            --sidebar-text-muted: #7a7f90;
            --sidebar-accent: #e8b44f;
            --sidebar-accent-soft: rgba(232, 180, 79, 0.12);
            --sidebar-hover-bg: rgba(255, 255, 255, 0.04);
            --sidebar-active-bg: rgba(232, 180, 79, 0.10);
            --sidebar-active-text: #f0d078;
            --sidebar-active-border: #e8b44f;
            --sidebar-divider: rgba(255, 255, 255, 0.06);
            --body-bg: #f5f3ef;
            --content-bg: #ffffff;
            --content-max-width: 860px;
            --text-primary: #1c1c28;
            --text-secondary: #4a4a5a;
            --text-muted: #7a7a8c;
            --text-light: #9a9aac;
            --border-color: #e6e3dd;
            --border-light: #f0ede8;
            --accent-gold: #c8963e;
            --accent-gold-light: #e8b44f;
            --accent-deep: #1a1446;
            --accent-blue: #3a5fcd;
            --tag-bg: #f0ede6;
            --tag-text: #6b5e3e;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.10), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', '苹方', system-ui, -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', '苹方', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--body-bg);
            color: var(--text-primary);
            line-height: 1.7;
            display: flex;
            min-height: 100vh;
            font-size: 16px;
            letter-spacing: 0.01em;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        :focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: var(--radius-xs);
        }

        /* ---------- 侧边栏 ---------- */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--sidebar-bg);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            border-right: 1px solid var(--sidebar-divider);
            transition: transform var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.08) transparent;
        }

        .sidebar::-webkit-scrollbar {
            width: 4px;
        }

        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }

        .sidebar::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
        }

        .sidebar-logo {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--sidebar-divider);
            flex-shrink: 0;
        }

        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 11px;
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.03em;
            transition: opacity var(--transition-fast);
        }

        .sidebar-logo a:hover {
            opacity: 0.85;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, #1a2850 0%, #2c4480 40%, #1e3260 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--sidebar-accent);
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }

        .sidebar-logo .logo-icon::after {
            content: '';
            position: absolute;
            width: 6px;
            height: 6px;
            background: var(--sidebar-accent);
            border-radius: 50%;
            top: 10px;
            right: 9px;
            box-shadow: 0 0 8px rgba(232, 180, 79, 0.7), 0 0 16px rgba(232, 180, 79, 0.3);
        }

        .sidebar-nav {
            padding: 16px 14px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--sidebar-text);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: var(--sidebar-text-muted);
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            background: var(--sidebar-hover-bg);
            color: #e8e8f0;
        }

        .sidebar-nav a:hover i {
            color: #d0d0dc;
        }

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

        .sidebar-nav a.active i {
            color: var(--sidebar-accent);
        }

        .sidebar-nav .nav-divider {
            height: 1px;
            background: var(--sidebar-divider);
            margin: 8px 6px;
            flex-shrink: 0;
        }

        .sidebar-bottom {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--sidebar-divider);
            flex-shrink: 0;
        }

        .sidebar-bottom .sb-brand {
            font-size: 0.8rem;
            color: var(--sidebar-text-muted);
            letter-spacing: 0.03em;
            font-weight: 500;
        }

        .sidebar-bottom .sb-copy {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.25);
            margin-top: 4px;
            letter-spacing: 0.02em;
        }

        /* ---------- 移动端顶部条 ---------- */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--sidebar-bg);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
            border-bottom: 1px solid var(--sidebar-divider);
        }

        .mobile-topbar .topbar-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: #ffffff;
            letter-spacing: 0.03em;
            flex: 1;
        }

        .hamburger-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-xs);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 1.3rem;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn:active {
            background: rgba(255, 255, 255, 0.13);
        }

        /* ---------- 侧边栏覆盖层 ---------- */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
        }

        .sidebar-overlay.visible {
            opacity: 1;
            pointer-events: auto;
        }

        /* ---------- 主内容区 ---------- */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--body-bg);
        }

        .content-container {
            flex: 1;
            padding: 32px 36px 0;
            max-width: calc(var(--content-max-width) + 72px);
            width: 100%;
            margin: 0 auto;
        }

        /* ---------- 面包屑 ---------- */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 6px 0 10px;
            letter-spacing: 0.02em;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
            font-weight: 500;
        }

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

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

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

        /* ---------- 文章容器 ---------- */
        .article-container {
            background: var(--content-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            margin-bottom: 36px;
        }

        .article-header {
            padding: 36px 40px 20px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .article-meta .meta-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.02em;
        }

        .article-meta .meta-date i {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .article-meta .meta-category {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            background: var(--tag-bg);
            color: var(--tag-text);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
        }

        .article-meta .meta-category:hover {
            background: #e8dfd0;
            color: #5a4a2e;
        }

        .article-meta .meta-category i {
            font-size: 0.7rem;
        }

        .article-title {
            font-family: var(--font-heading);
            font-size: 1.95rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            margin-bottom: 0;
        }

        .article-cover {
            width: 100%;
            aspect-ratio: 21 / 9;
            object-fit: cover;
            background: linear-gradient(135deg, #e8e4dc 0%, #f0ede6 50%, #e2ddd4 100%);
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-body {
            padding: 28px 40px 44px;
        }

        /* ---------- 文章正文排版 ---------- */
        .article-content {
            font-size: 1.02rem;
            line-height: 1.85;
            color: var(--text-secondary);
            letter-spacing: 0.015em;
        }

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 2em 0 0.8em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: 0.03em;
        }

        .article-content h2:first-child {
            margin-top: 0.4em;
        }

        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.22rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 1.6em 0 0.6em;
            letter-spacing: 0.03em;
        }

        .article-content h4 {
            font-family: var(--font-heading);
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 1.4em 0 0.5em;
            letter-spacing: 0.02em;
        }

        .article-content p {
            margin: 1em 0;
        }

        .article-content strong {
            font-weight: 650;
            color: var(--text-primary);
        }

        .article-content em {
            font-style: italic;
            color: var(--text-secondary);
        }

        .article-content a {
            color: var(--accent-blue);
            font-weight: 500;
            text-decoration: underline;
            text-decoration-color: rgba(58, 95, 205, 0.25);
            text-underline-offset: 3px;
            transition: all var(--transition-fast);
        }

        .article-content a:hover {
            color: #2a4aab;
            text-decoration-color: rgba(58, 95, 205, 0.5);
        }

        .article-content ul,
        .article-content ol {
            margin: 1em 0;
            padding-left: 1.6em;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin: 0.45em 0;
            padding-left: 0.2em;
        }

        .article-content li::marker {
            color: var(--accent-gold);
        }

        .article-content blockquote {
            margin: 1.4em 0;
            padding: 16px 22px;
            border-left: 4px solid var(--accent-gold-light);
            background: #fdfaf4;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
            letter-spacing: 0.02em;
            font-size: 0.98rem;
        }

        .article-content blockquote p {
            margin: 0.4em 0;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.4em 0;
            box-shadow: var(--shadow-sm);
            max-width: 100%;
            height: auto;
        }

        .article-content figure {
            margin: 1.6em 0;
            text-align: center;
        }

        .article-content figcaption {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 8px;
            letter-spacing: 0.02em;
        }

        .article-content hr {
            border: none;
            height: 1px;
            background: var(--border-color);
            margin: 2em 0;
        }

        .article-content code {
            font-family: var(--font-mono);
            font-size: 0.9em;
            background: #f4f2ed;
            padding: 2px 7px;
            border-radius: 4px;
            color: #6b3a2e;
            letter-spacing: 0;
        }

        .article-content pre {
            background: #1c1c28;
            color: #e0dcc8;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 1.4em 0;
            font-size: 0.9rem;
            line-height: 1.6;
            letter-spacing: 0;
        }

        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.4em 0;
            font-size: 0.92rem;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--border-color);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content th {
            background: #f8f6f2;
            font-weight: 650;
            color: var(--text-primary);
            letter-spacing: 0.03em;
        }

        .article-content td {
            color: var(--text-secondary);
        }

        /* ---------- 无文章状态 ---------- */
        .not-found-card {
            background: var(--content-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 60px 40px;
            text-align: center;
            margin-bottom: 36px;
        }

        .not-found-card .nf-icon {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 18px;
            opacity: 0.6;
        }

        .not-found-card .nf-title {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .not-found-card .nf-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            letter-spacing: 0.02em;
            line-height: 1.7;
            max-width: 420px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            background: var(--accent-gold);
            color: #ffffff;
            font-weight: 600;
            border-radius: 25px;
            letter-spacing: 0.04em;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 14px rgba(200, 150, 62, 0.3);
        }

        .btn-back:hover {
            background: #b8862e;
            box-shadow: 0 6px 20px rgba(200, 150, 62, 0.4);
            transform: translateY(-1px);
        }

        .btn-back:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 150, 62, 0.25);
        }

        /* ---------- 相关文章区域 ---------- */
        .related-section {
            margin-bottom: 36px;
        }

        .related-section .section-label {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .related-card {
            background: var(--content-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .related-card .rc-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e8e4dc;
        }

        .related-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .related-card:hover .rc-img img {
            transform: scale(1.04);
        }

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

        .related-card .rc-tag {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-gold);
            letter-spacing: 0.05em;
            margin-bottom: 6px;
            text-transform: uppercase;
        }

        .related-card .rc-title {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 650;
            color: var(--text-primary);
            line-height: 1.45;
            letter-spacing: 0.02em;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .rc-arrow {
            margin-top: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .related-card:hover .rc-arrow {
            color: var(--accent-gold);
            gap: 8px;
        }

        /* ---------- CTA 区域 ---------- */
        .cta-card {
            background: linear-gradient(135deg, #1a1446 0%, #201d52 30%, #1a2040 70%, #0f1a30 100%);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            text-align: center;
            margin-bottom: 36px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 180, 79, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card .cta-title {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-card .cta-desc {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.03em;
            margin-bottom: 22px;
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--accent-gold-light);
            color: #1a1446;
            font-weight: 700;
            border-radius: 25px;
            letter-spacing: 0.04em;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 18px rgba(232, 180, 79, 0.35);
        }

        .btn-cta:hover {
            background: #f0c860;
            box-shadow: 0 6px 24px rgba(232, 180, 79, 0.5);
            transform: translateY(-2px);
        }

        .btn-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(232, 180, 79, 0.3);
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--content-bg);
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            padding: 28px 36px;
            text-align: center;
            margin: 0 -36px;
            box-shadow: var(--shadow-sm);
            border-top: 1px solid var(--border-light);
        }

        .footer-inner {
            max-width: 500px;
            margin: 0 auto;
        }

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }

        .footer-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            letter-spacing: 0.02em;
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .footer-copy {
            font-size: 0.75rem;
            color: var(--text-light);
            letter-spacing: 0.03em;
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .sidebar-overlay {
                display: block;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }

            .content-container {
                padding: 20px 18px 0;
                max-width: 100%;
            }

            .article-header {
                padding: 24px 20px 14px;
            }

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

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

            .article-content {
                font-size: 0.95rem;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .cta-card {
                padding: 28px 20px;
            }

            .cta-card .cta-title {
                font-size: 1.25rem;
            }

            .site-footer {
                margin: 0 -18px;
                border-radius: var(--radius-md) var(--radius-md) 0 0;
                padding: 22px 18px;
            }

            .not-found-card {
                padding: 40px 20px;
            }
        }

        @media (max-width: 640px) {
            .content-container {
                padding: 14px 10px 0;
            }

            .article-header {
                padding: 18px 14px 10px;
            }

            .article-title {
                font-size: 1.3rem;
            }

            .article-body {
                padding: 12px 14px 20px;
            }

            .article-content {
                font-size: 0.9rem;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 1.25rem;
            }

            .article-content h3 {
                font-size: 1.08rem;
            }

            .article-meta {
                gap: 8px;
                font-size: 0.78rem;
            }

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

            .related-card .rc-body {
                padding: 12px 14px 14px;
            }

            .cta-card {
                padding: 22px 14px;
                border-radius: var(--radius-md);
            }

            .cta-card .cta-title {
                font-size: 1.1rem;
            }

            .cta-card .cta-desc {
                font-size: 0.85rem;
            }

            .btn-cta {
                padding: 10px 20px;
                font-size: 0.82rem;
            }

            .breadcrumb {
                font-size: 0.75rem;
                padding: 2px 0 6px;
            }

            .site-footer {
                margin: 0 -10px;
                border-radius: var(--radius-sm) var(--radius-sm) 0 0;
                padding: 18px 12px;
            }

            .footer-brand {
                font-size: 0.95rem;
            }

            .footer-desc {
                font-size: 0.75rem;
            }

            .footer-copy {
                font-size: 0.7rem;
            }

            .not-found-card {
                padding: 32px 14px;
                border-radius: var(--radius-md);
            }

            .not-found-card .nf-icon {
                font-size: 2.5rem;
            }

            .not-found-card .nf-title {
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0b1a3b;
            --primary-light: #132852;
            --accent: #d4a853;
            --accent-hover: #c4963e;
            --highlight: #4a90d9;
            --highlight-light: #e8f2fc;
            --text: #1e293b;
            --text-secondary: #5a6b7c;
            --text-light: #8899aa;
            --bg: #f7f8fb;
            --bg-white: #ffffff;
            --bg-dark: #0b1a3b;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --shadow-sm: 0 1px 3px rgba(11, 26, 59, 0.06);
            --shadow-md: 0 4px 16px rgba(11, 26, 59, 0.10);
            --shadow-lg: 0 8px 32px rgba(11, 26, 59, 0.14);
            --shadow-xl: 0 16px 48px rgba(11, 26, 59, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --sidebar-width: 240px;
            --sidebar-collapsed: 72px;
            --header-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
        }

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

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

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

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        button {
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.35;
            font-weight: 700;
            color: var(--primary);
        }

        h2 {
            font-size: 2rem;
            letter-spacing: -0.02em;
        }

        h3 {
            font-size: 1.3rem;
        }

        p {
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 clamp(20px, 4vw, 48px);
        }

        .section {
            padding: clamp(48px, 8vw, 88px) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.025em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 36px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 50px;
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--accent);
            color: #1a1a1a;
            box-shadow: 0 4px 14px rgba(212, 168, 83, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 83, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(212, 168, 83, 0.3);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--border);
            color: var(--text);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(212, 168, 83, 0.04);
            transform: translateY(-2px);
        }

        .btn-white {
            background: #ffffff;
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .btn-white:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary);
            color: #ffffff;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 0 24px;
            overflow-y: auto;
            transition: transform var(--transition), width var(--transition);
            box-shadow: 4px 0 28px rgba(11, 26, 59, 0.18);
        }

        .sidebar-logo {
            padding: 0 24px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .sidebar-logo .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .sidebar-logo .logo-text {
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            white-space: nowrap;
            color: #ffffff;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0 16px;
            flex: 1;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: 12px;
            font-size: 0.93rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }
        .sidebar-nav a.active {
            background: rgba(212, 168, 83, 0.18);
            color: var(--accent);
            font-weight: 700;
            box-shadow: inset 3px 0 0 var(--accent);
        }
        .sidebar-nav a.active i {
            color: var(--accent);
        }

        .sidebar-footer {
            padding: 20px 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: auto;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition);
        }

        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--primary);
            z-index: 999;
            align-items: center;
            padding: 0 20px;
            gap: 14px;
            box-shadow: 0 2px 16px rgba(11, 26, 59, 0.25);
        }

        .mobile-header .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .mobile-header .logo-text {
            font-size: 0.95rem;
            font-weight: 800;
            color: #ffffff;
            white-space: nowrap;
        }

        .menu-toggle {
            display: none;
            background: none;
            color: #ffffff;
            font-size: 1.4rem;
            padding: 6px;
            margin-left: auto;
            cursor: pointer;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            transition: opacity var(--transition);
        }
        .sidebar-overlay.show {
            display: block;
        }

        .hero-section {
            position: relative;
            padding: clamp(60px, 10vw, 100px) 0;
            background: linear-gradient(170deg, #0b1a3b 0%, #132852 35%, #1a3a6e 70%, #0f2040 100%);
            overflow: hidden;
            color: #ffffff;
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
            pointer-events: none;
            z-index: 0;
        }
        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.25) 0%, transparent 70%);
            top: -120px;
            right: -100px;
            pointer-events: none;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }
        .hero-content .hero-badge {
            display: inline-block;
            padding: 8px 18px;
            background: rgba(212, 168, 83, 0.2);
            border: 1px solid rgba(212, 168, 83, 0.35);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.06em;
            margin-bottom: 20px;
        }
        .hero-content h1 {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 900;
            color: #ffffff;
            letter-spacing: -0.03em;
            margin-bottom: 18px;
            line-height: 1.2;
        }
        .hero-content h1 span {
            color: var(--accent);
        }
        .hero-content .hero-desc {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.75;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .stat-num {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent);
            letter-spacing: -0.02em;
        }
        .hero-stat .stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
            letter-spacing: 0.03em;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(212, 168, 83, 0.3);
        }
        .service-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #eef2f8;
        }
        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .service-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .service-card .card-body {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(212, 168, 83, 0.1);
            padding: 5px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
            align-self: flex-start;
        }
        .service-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
        }
        .service-card .card-features {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }
        .service-card .card-feature {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .service-card .card-feature i {
            color: var(--accent);
            font-size: 0.7rem;
        }

        .highlight-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .highlight-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4 / 3;
        }
        .highlight-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .highlight-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .highlight-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .highlight-item .hl-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--highlight-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--highlight);
            flex-shrink: 0;
        }
        .highlight-item .hl-info h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--primary);
        }
        .highlight-item .hl-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .process-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding-top: 40px;
        }
        .process-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: #1a1a1a;
            font-weight: 900;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
        }
        .process-step::before {
            content: '';
            position: absolute;
            top: 22px;
            left: 50%;
            right: -50%;
            height: 2px;
            background: var(--border);
            z-index: 1;
        }
        .process-step:last-child::before {
            display: none;
        }
        .process-step h4 {
            font-size: 0.95rem;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.82rem;
            color: var(--text-light);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(74, 144, 217, 0.2);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            transition: transform var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .cta-section {
            background: linear-gradient(160deg, #0b1a3b 0%, #132852 60%, #1a3665 100%);
            color: #ffffff;
            text-align: center;
            border-radius: var(--radius-xl);
            padding: clamp(48px, 8vw, 72px) clamp(28px, 6vw, 48px);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.15) 0%, transparent 70%);
            bottom: -100px;
            left: -80px;
            pointer-events: none;
        }
        .cta-section h2 {
            color: #ffffff;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn {
            position: relative;
            z-index: 1;
        }

        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 40px 0;
            margin-top: auto;
        }
        .site-footer .footer-inner {
            text-align: center;
            max-width: 500px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.03em;
            margin-bottom: 10px;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.65;
            margin-bottom: 12px;
        }
        .site-footer .footer-copy {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.35);
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero-section {
                margin-top: var(--header-height);
            }
            .highlight-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .process-timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .process-step::before {
                display: none;
            }
            .card-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
                gap: 18px;
            }
            .hero-stats {
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .process-timeline {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .highlight-row {
                gap: 24px;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .stat-num {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section {
                border-radius: var(--radius-lg);
            }
        }

        @media (max-width: 520px) {
            .process-timeline {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 10px;
            }
            .hero-stats .hero-stat {
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0d0d2b;
            --primary-light: #1a1a40;
            --primary-lighter: #252555;
            --accent: #d4a35e;
            --accent-light: #e8c680;
            --accent-glow: rgba(212, 163, 94, 0.25);
            --highlight: #7c6ff7;
            --highlight-light: #a094f8;
            --highlight-glow: rgba(124, 111, 247, 0.2);
            --bg-page: #f6f4f0;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark-card: #14143a;
            --text-dark: #1a1a30;
            --text-medium: #4a4a62;
            --text-light: #7a7a94;
            --text-on-dark: #e4e4f0;
            --text-on-dark-muted: #b0b0c8;
            --border: #e2ded6;
            --border-light: #ece8e0;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --shadow-hover: 0 10px 36px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.06);
            --shadow-dark: 0 8px 40px rgba(0, 0, 0, 0.25);
            --sidebar-width: 250px;
            --sidebar-collapsed: 0px;
            --header-mobile-height: 60px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        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-dark);
            background: var(--bg-page);
            min-height: 100vh;
            display: flex;
            flex-direction: row;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-dark);
        }

        :focus-visible {
            outline: 2px solid var(--highlight);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-smooth);
            box-shadow: 4px 0 30px rgba(0, 0, 0, 0.3);
        }

        .sidebar-logo {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }

        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
        }

        .sidebar-logo a:hover {
            opacity: 0.85;
        }

        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), var(--highlight));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 18px;
            border-radius: var(--radius);
            color: var(--text-on-dark-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #ffffff;
        }

        .sidebar-nav a.active {
            background: var(--accent-glow);
            color: var(--accent-light);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(212, 163, 94, 0.3);
        }

        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-footer-tag {
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }

        .sidebar-footer-tag span {
            display: block;
            font-size: 0.78rem;
            color: var(--text-on-dark-muted);
            letter-spacing: 0.04em;
        }

        .main-wrapper {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition-smooth);
        }

        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--primary);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }

        .mobile-header .mobile-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            font-family: var(--font-heading);
        }

        .mobile-header .mobile-logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 7px;
            background: linear-gradient(135deg, var(--accent), var(--highlight));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #ffffff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

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

        .page-hero {
            position: relative;
            background: linear-gradient(160deg, var(--primary) 0%, #141436 40%, #1a1a48 100%);
            padding: 80px 60px 90px;
            color: #ffffff;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.18;
            mix-blend-mode: screen;
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 180px;
            background: linear-gradient(to top, rgba(13, 13, 43, 0.9), transparent);
            pointer-events: none;
        }

        .page-hero .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .page-hero .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            background: var(--accent-glow);
            border: 1px solid rgba(212, 163, 94, 0.4);
            border-radius: 50px;
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
            line-height: 1.2;
        }

        .page-hero h1 span {
            background: linear-gradient(135deg, var(--accent-light), #f0d68a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-on-dark-muted);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 620px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 14px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            cursor: pointer;
            font-family: var(--font-body);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #1a1a30;
            box-shadow: 0 4px 18px rgba(212, 163, 94, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 24px rgba(212, 163, 94, 0.5);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(212, 163, 94, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .section {
            padding: 70px 60px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--highlight-glow);
            color: var(--highlight);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-medium);
            max-width: 650px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .feature-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .feature-card .card-icon.icon-purple {
            background: rgba(124, 111, 247, 0.12);
            color: var(--highlight);
        }

        .feature-card .card-icon.icon-gold {
            background: rgba(212, 163, 94, 0.15);
            color: var(--accent);
        }

        .feature-card .card-icon.icon-teal {
            background: rgba(45, 190, 170, 0.12);
            color: #2dbeaa;
        }

        .feature-card .card-icon.icon-rose {
            background: rgba(230, 100, 130, 0.12);
            color: #e66482;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .feature-card p {
            font-size: 0.93rem;
            color: var(--text-medium);
            line-height: 1.65;
        }

        .feature-card .card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius);
            margin-bottom: 18px;
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 700px;
            margin: 0 auto;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .step-item:hover {
            box-shadow: var(--shadow);
            border-color: transparent;
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--highlight), var(--highlight-light));
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dark);
        }

        .step-content p {
            font-size: 0.9rem;
            color: var(--text-medium);
            line-height: 1.6;
        }

        .highlights-banner {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .highlights-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            mix-blend-mode: screen;
        }

        .highlights-banner .banner-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: space-around;
            text-align: center;
        }

        .highlight-stat {
            flex: 1;
            min-width: 150px;
        }

        .highlight-stat .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-light), #f5dfa0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            line-height: 1;
            margin-bottom: 8px;
        }

        .highlight-stat .stat-label {
            font-size: 0.9rem;
            color: var(--text-on-dark-muted);
            letter-spacing: 0.03em;
        }

        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .two-col .col-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            object-fit: cover;
            max-height: 400px;
        }

        .two-col .col-text h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-dark);
        }

        .two-col .col-text p {
            font-size: 1rem;
            color: var(--text-medium);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .faq-list {
            max-width: 750px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            background: none;
            border: none;
            font-family: var(--font-body);
            transition: color var(--transition-fast);
        }

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

        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.93rem;
            color: var(--text-medium);
            line-height: 1.7;
            display: none;
        }

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

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--highlight);
        }

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

        .cta-section {
            background: linear-gradient(160deg, var(--primary) 0%, #1a1a48 100%);
            border-radius: var(--radius-xl);
            padding: 60px 50px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
            margin: 0 60px 70px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            mix-blend-mode: screen;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .cta-section p {
            color: var(--text-on-dark-muted);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .site-footer {
            background: var(--primary);
            color: var(--text-on-dark-muted);
            padding: 40px 60px;
            text-align: center;
            flex-shrink: 0;
        }

        .site-footer .footer-inner {
            max-width: 600px;
            margin: 0 auto;
        }

        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 14px;
            color: var(--text-on-dark-muted);
        }

        .site-footer .footer-copy {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.03em;
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 6px 0 40px rgba(0, 0, 0, 0.5);
            }
            .sidebar-overlay.show {
                display: block;
                opacity: 1;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .page-hero {
                padding: 100px 30px 70px;
                min-height: 360px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 50px 24px;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .cards-grid {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
                gap: 20px;
            }
            .two-col {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .two-col .col-image img {
                max-height: 280px;
            }
            .cta-section {
                margin: 0 24px 50px;
                padding: 40px 28px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .highlights-banner {
                padding: 36px 24px;
            }
            .highlight-stat .stat-number {
                font-size: 2.2rem;
            }
            .site-footer {
                padding: 30px 24px;
            }
        }

        @media (max-width: 768px) {
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero {
                padding: 90px 20px 60px;
                min-height: 300px;
            }
            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 13px 26px;
                font-size: 0.95rem;
            }
            .section {
                padding: 40px 16px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header p {
                font-size: 0.9rem;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .step-item {
                padding: 18px 20px;
                gap: 14px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .step-content h4 {
                font-size: 0.95rem;
            }
            .two-col .col-text h2 {
                font-size: 1.5rem;
            }
            .cta-section {
                margin: 0 16px 40px;
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .highlights-banner .banner-inner {
                gap: 20px;
            }
            .highlight-stat .stat-number {
                font-size: 1.8rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 15px 18px;
            }
            .faq-answer {
                padding: 0 18px 15px;
                font-size: 0.85rem;
            }
            .site-footer {
                padding: 24px 16px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero {
                padding: 80px 16px 50px;
                min-height: 260px;
            }
            .page-hero .hero-badge {
                font-size: 0.75rem;
                padding: 5px 14px;
            }
            .page-hero .hero-subtitle {
                font-size: 0.82rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .section-header .section-tag {
                font-size: 0.72rem;
                padding: 4px 12px;
            }
            .feature-card .card-icon {
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
            }
            .feature-card h3 {
                font-size: 1.05rem;
            }
            .feature-card p {
                font-size: 0.85rem;
            }
            .highlight-stat .stat-number {
                font-size: 1.6rem;
            }
            .highlight-stat .stat-label {
                font-size: 0.78rem;
            }
            .cta-section h2 {
                font-size: 1.25rem;
            }
            .cta-section p {
                font-size: 0.88rem;
            }
        }