/* roulang page: index */
:root {
            --color-primary: #1a2740;
            --color-primary-light: #243453;
            --color-accent: #e8a817;
            --color-accent-hover: #c98f14;
            --color-accent-light: #fdf3dc;
            --color-bg: #f5f6fa;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-nav-bg: #0f1926;
            --color-nav-hover: #1a2d45;
            --color-nav-active: #e8a817;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --color-info: #3b82f6;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s ease;
            --nav-width: 260px;
            --header-mobile-height: 60px;
            --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-content-width: 1100px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            display: flex;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ============ LEFT NAVIGATION (Desktop) ============ */
        .nav-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-nav-bg);
            display: flex;
            flex-direction: column;
            z-index: 100;
            box-shadow: 2px 0 24px rgba(0,0,0,0.25);
            transition: transform var(--transition-slow);
        }

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

        .nav-sidebar-brand a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
        }

        .nav-sidebar-brand a:hover {
            opacity: 0.85;
        }

        .nav-sidebar-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #1a1a1a;
            flex-shrink: 0;
        }

        .nav-sidebar-menu {
            flex: 1;
            padding: 16px 12px;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-sidebar-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius);
            color: rgba(255,255,255,0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

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

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

        .nav-sidebar-menu a.active {
            background: rgba(232,168,23,0.15);
            color: var(--color-nav-active);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-nav-active);
        }

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

        .nav-sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            flex-shrink: 0;
        }

        .nav-sidebar-footer .nav-tag {
            display: inline-block;
            padding: 6px 12px;
            background: rgba(232,168,23,0.2);
            color: var(--color-accent);
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        /* ============ MOBILE HEADER ============ */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-nav-bg);
            z-index: 99;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.2);
        }

        .mobile-header-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
        }

        .mobile-header-brand .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #1a1a1a;
            flex-shrink: 0;
        }

        .mobile-menu-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 1.4rem;
            border-radius: var(--radius);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255,255,255,0.1);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.6);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .mobile-nav-overlay.active {
            opacity: 1;
        }

        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: var(--color-nav-bg);
            z-index: 99;
            transform: translateX(-100%);
            transition: transform var(--transition-slow);
            flex-direction: column;
            padding-top: var(--header-mobile-height);
            box-shadow: 4px 0 24px rgba(0,0,0,0.3);
        }

        .mobile-nav-drawer.active {
            transform: translateX(0);
        }

        .mobile-nav-drawer a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 24px;
            color: rgba(255,255,255,0.8);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .mobile-nav-drawer a:hover {
            background: var(--color-nav-hover);
            color: #ffffff;
        }

        .mobile-nav-drawer a.active {
            color: var(--color-nav-active);
            background: rgba(232,168,23,0.12);
            font-weight: 600;
        }

        .mobile-nav-drawer a i {
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }

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

        .container {
            width: 100%;
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 0 32px;
        }

        .container-narrow {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ============ HERO SECTION ============ */
        .hero {
            position: relative;
            padding: 80px 0 100px;
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #ffffff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,25,38,0.88) 0%, rgba(26,39,64,0.78) 40%, rgba(15,25,38,0.85) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--color-bg);
            border-radius: 40px 40px 0 0;
            z-index: 2;
        }

        .hero .container {
            position: relative;
            z-index: 3;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(232,168,23,0.2);
            border: 1px solid rgba(232,168,23,0.35);
            border-radius: var(--radius-full);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 900;
            color: #ffffff;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.2;
            max-width: 680px;
        }

        .hero h1 .accent {
            color: var(--color-accent);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #1a1a1a;
            border-color: var(--color-accent);
            box-shadow: 0 4px 16px rgba(232,168,23,0.35);
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(232,168,23,0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255,255,255,0.5);
        }

        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius);
        }

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

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

        /* ============ SECTION COMMON ============ */
        .section {
            padding: 70px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            padding: 6px 14px;
            background: var(--color-accent-light);
            color: #8b6914;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ============ FEATURES GRID ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-accent);
            opacity: 0;
            transition: opacity var(--transition);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.4rem;
            color: #8b6914;
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--color-accent);
            color: #ffffff;
            transform: scale(1.08);
        }

        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ============ CATEGORY ENTRANCE ============ */
        .category-entrance-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .category-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            cursor: pointer;
            display: block;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .category-card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

        .category-card-body {
            padding: 20px;
        }

        .category-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .category-card-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            margin-bottom: 12px;
        }

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

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

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

        .cms-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .cms-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .cms-item-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .cms-item-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cms-item-category {
            display: inline-block;
            padding: 4px 10px;
            background: var(--color-accent-light);
            color: #8b6914;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 10px;
            width: fit-content;
        }

        .cms-item-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-item-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }

        .cms-item-body h3 a:hover {
            color: var(--color-accent);
        }

        .cms-item-excerpt {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .cms-item-meta {
            font-size: 0.78rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .cms-item-meta i {
            font-size: 0.7rem;
            margin-right: 3px;
        }

        .cms-empty {
            text-align: center;
            padding: 48px 24px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            grid-column: 1 / -1;
            border: 1px dashed var(--color-border);
        }

        /* ============ STATS SECTION ============ */
        .stats-section {
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,25,38,0.9);
            z-index: 1;
        }

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

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.1);
            transition: all var(--transition);
        }

        .stat-card:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--color-accent);
            margin-bottom: 4px;
            letter-spacing: 0.02em;
        }

        .stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            font-weight: 500;
        }

        .stats-section .section-title {
            color: #ffffff;
            text-align: center;
            margin-bottom: 8px;
        }

        .stats-section .section-subtitle {
            color: rgba(255,255,255,0.65);
            text-align: center;
            margin-bottom: 40px;
        }

        /* ============ STEPS / PROCESS ============ */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-item {
            text-align: center;
            position: relative;
            padding: 28px 18px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            color: #1a1a1a;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 4px 12px rgba(232,168,23,0.3);
        }

        .step-item h3 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

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

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

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text);
            user-select: none;
        }

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

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--color-text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

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

        .faq-item[open] {
            border-color: var(--color-accent);
            box-shadow: var(--shadow);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #1a3050 100%);
            text-align: center;
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(232,168,23,0.08);
            top: -80px;
            right: -60px;
            z-index: 1;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(232,168,23,0.06);
            bottom: -60px;
            left: -40px;
            z-index: 1;
        }

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

        .cta-section h2 {
            color: #ffffff;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 15px 38px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-nav-bg);
            color: rgba(255,255,255,0.7);
            padding: 40px 0 24px;
            flex-shrink: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.55);
        }

        .footer-links h4 {
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-links a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

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

            .hero h1 {
                font-size: 2.4rem;
            }

            .container,
            .container-narrow {
                padding: 0 24px;
            }

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

        @media (max-width: 768px) {
            .nav-sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .mobile-nav-overlay {
                display: block;
            }

            .mobile-nav-drawer {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: var(--header-mobile-height);
            }

            .hero {
                padding: 50px 0 70px;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .hero::after {
                height: 35px;
                border-radius: 25px 25px 0 0;
            }

            .section {
                padding: 44px 0;
            }

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

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

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

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

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

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

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

            .container,
            .container-narrow {
                padding: 0 16px;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }

            .btn-lg {
                padding: 13px 28px;
                font-size: 0.95rem;
            }

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

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

            .feature-card {
                padding: 20px 16px;
            }

            .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }

            .feature-card h3 {
                font-size: 0.9rem;
            }

            .feature-card p {
                font-size: 0.8rem;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .cms-item-image {
                height: 160px;
            }

            .category-card-image {
                height: 150px;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

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

            .hero h1 {
                font-size: 1.5rem;
            }

            .hero {
                padding: 36px 0 56px;
            }

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

            .stat-card {
                padding: 20px 14px;
            }

            .stat-number {
                font-size: 1.5rem;
            }

            .stat-label {
                font-size: 0.78rem;
            }

            .section-header {
                margin-bottom: 30px;
            }

            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.88rem;
            }

            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.82rem;
            }
        }

        /* ============ UTILITY ============ */
        .text-accent {
            color: var(--color-accent);
        }

        .text-center {
            text-align: center;
        }

        .mt-0 {
            margin-top: 0;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        .bg-light {
            background: #fafbfd;
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --primary-lighter: #1c2541;
            --accent: #e2b04a;
            --accent-hover: #c99735;
            --accent-light: #f0d78c;
            --accent-pale: #fef9ed;
            --bg: #f5f6f8;
            --surface: #ffffff;
            --surface-alt: #f0f2f5;
            --text: #2d3436;
            --text-strong: #1a1d20;
            --text-light: #636e72;
            --text-muted: #98a0a6;
            --border: #e4e7eb;
            --border-light: #eef0f3;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow: 0 2px 16px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 16px 56px rgba(0,0,0,0.15);
            --sidebar-width: 260px;
            --sidebar-collapsed: 0px;
            --header-mobile-height: 60px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
        }

        /* ============ 基础 Reset ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        /* ============ 页面布局容器 ============ */
        .page-wrapper {
            display: flex;
            min-height: 100vh;
            width: 100%;
        }

        /* ============ 左侧侧边栏导航 ============ */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-slow), width var(--transition-slow);
            box-shadow: 2px 0 24px rgba(0,0,0,0.18);
        }

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

        .sidebar-nav::-webkit-scrollbar-thumb {
            background: rgba(255,255,255,0.15);
            border-radius: 4px;
        }

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

        .sidebar-brand .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.3;
            transition: opacity var(--transition-fast);
        }

        .sidebar-brand .brand-logo:hover {
            opacity: 0.88;
        }

        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent) 0%, #d4942b 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary);
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(226,176,74,0.35);
        }

        .sidebar-brand .brand-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-brand .brand-name {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.2;
            color: #ffffff;
        }

        .sidebar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: rgba(255,255,255,0.55);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

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

        .nav-sidebar-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: var(--radius);
            color: rgba(255,255,255,0.78);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-sidebar-menu a i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .nav-sidebar-menu a:hover {
            background: rgba(255,255,255,0.07);
            color: #ffffff;
        }

        .nav-sidebar-menu a.active,
        .nav-sidebar-menu a[aria-current="page"] {
            background: rgba(226,176,74,0.14);
            color: var(--accent);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
        }

        .nav-sidebar-menu a.active i,
        .nav-sidebar-menu a[aria-current="page"] i {
            color: var(--accent);
        }

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

        .sidebar-footer-meta .sidebar-status {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.45);
        }

        .sidebar-footer-meta .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #4ade80;
            box-shadow: 0 0 8px rgba(74,222,128,0.5);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

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

        /* ============ 移动端顶部导航栏 ============ */
        .mobile-top-bar {
            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(0,0,0,0.2);
        }

        .mobile-top-bar .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .mobile-top-bar .mobile-brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent) 0%, #d4942b 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            color: #ffffff;
            font-size: 1.35rem;
            transition: background var(--transition-fast);
            position: relative;
            z-index: 1002;
        }

        .mobile-menu-toggle:hover {
            background: rgba(255,255,255,0.1);
        }

        .mobile-menu-toggle .fa-times {
            display: none;
        }

        .mobile-menu-toggle.open .fa-bars {
            display: none;
        }

        .mobile-menu-toggle.open .fa-times {
            display: inline-block;
        }

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

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

        /* ============ 容器 ============ */
        .container {
            width: 100%;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .container-narrow {
            max-width: 860px;
        }

        /* ============ 面包屑 ============ */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            padding: 20px 0 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

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

        .breadcrumb .separator {
            color: var(--border);
            font-size: 0.7rem;
        }

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

        /* ============ 分类 Banner ============ */
        .category-banner {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-top: 16px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            min-height: 280px;
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-md);
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.88) 0%, rgba(22,33,62,0.72) 40%, rgba(26,26,46,0.5) 100%);
            z-index: 1;
        }

        .category-banner-content {
            position: relative;
            z-index: 2;
            padding: 40px 48px;
            color: #ffffff;
        }

        .category-banner-content .banner-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(226,176,74,0.2);
            color: var(--accent-light);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
            border: 1px solid rgba(226,176,74,0.3);
        }

        .category-banner-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
            line-height: 1.25;
        }

        .category-banner-content .banner-desc {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            line-height: 1.6;
        }

        .category-banner-content .banner-stats {
            display: flex;
            gap: 28px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .category-banner-content .banner-stat {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
        }

        .category-banner-content .banner-stat strong {
            color: var(--accent);
            font-size: 1.15rem;
            font-weight: 700;
        }

        /* ============ 板块通用 ============ */
        .section {
            padding: 48px 0;
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 50px;
            background: var(--accent-pale);
            color: var(--accent-hover);
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 0.95rem;
            max-width: 600px;
        }

        /* ============ 分类介绍卡片 ============ */
        .intro-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            display: flex;
            gap: 32px;
            align-items: flex-start;
            flex-wrap: wrap;
        }

        .intro-card .intro-icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--accent-pale) 0%, #fff8e7 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(226,176,74,0.18);
        }

        .intro-card .intro-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-strong);
        }

        .intro-card .intro-body p {
            color: var(--text-light);
            font-size: 0.93rem;
            line-height: 1.7;
            max-width: 640px;
        }

        .intro-highlights {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .intro-highlights .highlight-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text);
            background: var(--surface-alt);
            padding: 7px 14px;
            border-radius: 50px;
            font-weight: 500;
        }

        .intro-highlights .highlight-item i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* ============ 攻略文章卡片网格 ============ */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--surface-alt);
        }

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

        .article-card:hover .card-image img {
            transform: scale(1.05);
        }

        .article-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 50px;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            z-index: 2;
        }

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

        .article-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-body p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 8px;
        }

        .article-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ============ 热门攻略排行 ============ */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border-radius: var(--radius);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .ranking-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--border);
            transform: translateX(4px);
        }

        .ranking-item .rank-number {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
            color: var(--text-muted);
            background: var(--surface-alt);
        }

        .ranking-item:nth-child(1) .rank-number {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #fff;
            box-shadow: 0 4px 14px rgba(245,158,11,0.35);
        }

        .ranking-item:nth-child(2) .rank-number {
            background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
            color: #fff;
            box-shadow: 0 4px 14px rgba(160,160,160,0.3);
        }

        .ranking-item:nth-child(3) .rank-number {
            background: linear-gradient(135deg, #d4a574, #b8854a);
            color: #fff;
            box-shadow: 0 4px 14px rgba(184,133,74,0.3);
        }

        .ranking-item .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-item .rank-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-strong);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-item .rank-info .rank-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 3px;
        }

        .ranking-item .rank-arrow {
            color: var(--accent);
            font-size: 0.9rem;
            flex-shrink: 0;
            opacity: 0;
            transform: translateX(-8px);
            transition: all var(--transition-fast);
        }

        .ranking-item:hover .rank-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* ============ 攻略步骤指南 ============ */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }

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

        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent) 0%, #d4942b 100%);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 20px rgba(226,176,74,0.3);
        }

        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.55;
        }

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

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

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: color var(--transition-fast);
        }

        .faq-item summary:hover {
            color: var(--accent-hover);
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

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

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        .faq-item[open] {
            border-color: var(--accent-light);
            box-shadow: var(--shadow);
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(226,176,74,0.08);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(226,176,74,0.06);
            pointer-events: none;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-section h3 {
            font-size: 1.65rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-align: center;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 6px 22px rgba(226,176,74,0.35);
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            box-shadow: 0 8px 28px rgba(226,176,74,0.45);
            transform: translateY(-2px);
            color: var(--primary);
        }

        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255,255,255,0.35);
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.6);
            color: #ffffff;
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 0.82rem;
            border-radius: 50px;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--primary);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .site-footer h3 {
            color: #ffffff;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .site-footer h4 {
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .site-footer .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-links a {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            transition: color var(--transition-fast);
            padding: 2px 0;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent);
        }

        .site-footer .footer-bottom {
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
            text-align: center;
        }

        /* ============ 分隔线 ============ */
        .divider {
            border: none;
            border-top: 1px solid var(--border-light);
            margin: 0;
        }

        /* ============ 分页导航 ============ */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            background: var(--surface);
            border: 1px solid var(--border-light);
            color: var(--text);
        }

        .pagination a:hover {
            background: var(--accent-pale);
            border-color: var(--accent-light);
            color: var(--accent-hover);
        }

        .pagination .active-page {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            font-weight: 700;
            box-shadow: 0 3px 12px rgba(226,176,74,0.3);
        }

        .pagination .page-dots {
            border: none;
            background: transparent;
            color: var(--text-muted);
            cursor: default;
        }

        /* ============ 响应式设计 ============ */

        /* 平板及以下（≤1024px） */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .category-banner-content h1 {
                font-size: 1.9rem;
            }

            .category-banner-content {
                padding: 32px 32px;
            }

            .category-banner {
                min-height: 240px;
            }

            .container {
                padding: 0 24px;
            }

            .intro-card {
                padding: 28px 28px;
            }

            .cta-section {
                padding: 36px 32px;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        /* 手机端（≤768px） */
        @media (max-width: 768px) {
            :root {
                --sidebar-width: 0px;
            }

            .sidebar-nav {
                transform: translateX(-100%);
                width: 280px;
                z-index: 1001;
            }

            .sidebar-nav.mobile-open {
                transform: translateX(0);
                width: 280px;
            }

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

            .mobile-top-bar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: var(--header-mobile-height);
            }

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

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

            .category-banner {
                min-height: 200px;
                border-radius: var(--radius);
            }

            .category-banner-content {
                padding: 24px 20px;
            }

            .category-banner-content h1 {
                font-size: 1.5rem;
            }

            .category-banner-content .banner-desc {
                font-size: 0.88rem;
                max-width: 100%;
            }

            .category-banner-content .banner-stats {
                gap: 16px;
            }

            .breadcrumb {
                padding: 12px 0 0;
                font-size: 0.8rem;
            }

            .section {
                padding: 32px 0;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .container {
                padding: 0 16px;
            }

            .intro-card {
                flex-direction: column;
                padding: 24px 20px;
                gap: 16px;
            }

            .intro-highlights {
                gap: 8px;
            }

            .ranking-item {
                padding: 14px 16px;
                gap: 12px;
            }

            .ranking-item .rank-number {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }

            .ranking-item .rank-info h4 {
                font-size: 0.88rem;
            }

            .cta-section {
                padding: 28px 20px;
                border-radius: var(--radius);
            }

            .cta-section h3 {
                font-size: 1.3rem;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }

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

            .pagination a,
            .pagination span {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }

            .step-card {
                padding: 20px 16px;
            }

            .step-card .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }

            .faq-item summary {
                padding: 14px 18px;
                font-size: 0.88rem;
            }

            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.84rem;
            }
        }

        /* 小手机（≤520px） */
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .category-banner-content h1 {
                font-size: 1.3rem;
            }

            .category-banner-content .banner-desc {
                font-size: 0.82rem;
            }

            .category-banner-content .banner-stats {
                flex-direction: column;
                gap: 6px;
            }

            .category-banner {
                min-height: 180px;
            }

            .intro-card .intro-body h3 {
                font-size: 1.1rem;
            }

            .article-card .card-body h3 {
                font-size: 0.95rem;
            }

            .cta-section h3 {
                font-size: 1.15rem;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .pagination {
                gap: 4px;
            }

            .pagination a,
            .pagination span {
                width: 30px;
                height: 30px;
                font-size: 0.75rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #1a3555;
            --primary-light: #264773;
            --primary-dark: #0f2440;
            --accent: #c8963e;
            --accent-light: #d9ab5c;
            --accent-dark: #a67a2e;
            --bg: #f3f5f8;
            --bg-alt: #e9ecf1;
            --card-bg: #ffffff;
            --text: #2c3e50;
            --text-heading: #1a2d3d;
            --text-light: #5a6c7d;
            --text-muted: #8899aa;
            --border: #dce2e8;
            --border-light: #e8ecf1;
            --shadow-sm: 0 1px 4px rgba(26,53,85,0.06);
            --shadow: 0 2px 12px rgba(26,53,85,0.08);
            --shadow-md: 0 4px 20px rgba(26,53,85,0.12);
            --shadow-lg: 0 8px 32px rgba(26,53,85,0.16);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 250px;
            --sidebar-width-tablet: 200px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        .app-layout {
            display: flex;
            flex-direction: row;
            min-height: 100vh;
            width: 100%;
        }

        /* ========================================
           侧边栏导航
           ======================================== */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
            color: #ffffff;
            display: flex;
            flex-direction: column;
            z-index: 100;
            box-shadow: 2px 0 20px rgba(0,0,0,0.18);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .nav-brand {
            padding: 28px 22px 18px;
            border-bottom: 1px solid rgba(255,255,255,0.12);
            margin-bottom: 8px;
            flex-shrink: 0;
        }

        .nav-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: #ffffff;
            line-height: 1.3;
            transition: opacity var(--transition);
        }

        .nav-brand-logo:hover {
            opacity: 0.85;
        }

        .nav-brand-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(200,150,62,0.35);
        }

        .nav-brand-logo .logo-text {
            display: flex;
            flex-direction: column;
        }

        .nav-brand-logo .logo-text .logo-main {
            font-size: 1.05rem;
            line-height: 1.2;
        }

        .nav-brand-logo .logo-text .logo-sub {
            font-size: 0.7rem;
            font-weight: 400;
            opacity: 0.7;
            letter-spacing: 0.05em;
        }

        .nav-sidebar-menu {
            display: flex;
            flex-direction: column;
            padding: 12px 14px;
            gap: 4px;
            flex: 1;
        }

        .nav-sidebar-menu a {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 12px 16px;
            border-radius: var(--radius);
            color: rgba(255,255,255,0.78);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

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

        .nav-sidebar-menu a:hover {
            color: #ffffff;
            background: rgba(255,255,255,0.08);
            transform: translateX(2px);
        }

        .nav-sidebar-menu a.active {
            color: #ffffff;
            background: rgba(255,255,255,0.14);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent);
        }

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

        .nav-sidebar-divider {
            height: 1px;
            background: rgba(255,255,255,0.1);
            margin: 10px 14px;
        }

        .nav-sidebar-tag {
            padding: 4px 14px;
            margin: 6px 14px 2px;
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: rgba(255,255,255,0.45);
            font-weight: 600;
        }

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

        .content-wrapper {
            flex: 1;
            padding: 0;
            max-width: 1100px;
            width: 100%;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========================================
           文章头部 Banner
           ======================================== */
        .article-hero {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 40px 0 36px;
            margin-bottom: 32px;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            color: #ffffff;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 0%, rgba(26,53,85,0.78) 50%, rgba(38,71,115,0.7) 100%);
            z-index: 1;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
            list-style: none;
        }

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb li a {
            color: rgba(255,255,255,0.8);
            transition: color var(--transition);
        }

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

        .breadcrumb li.separator {
            color: rgba(255,255,255,0.4);
        }

        .breadcrumb li.current {
            color: #ffffff;
            font-weight: 500;
        }

        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 10px;
        }

        .article-hero-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #fff;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .article-hero-date {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: #ffffff;
            letter-spacing: 0.02em;
            margin: 0;
        }

        /* ========================================
           文章主体布局
           ======================================== */
        .article-body-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 32px;
            margin-bottom: 40px;
            align-items: start;
        }

        .article-main {
            min-width: 0;
        }

        .article-sidebar {
            position: sticky;
            top: 24px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        /* ========================================
           文章内容卡片
           ======================================== */
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .article-cover {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }

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

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

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-heading);
            margin: 2em 0 0.8em;
            padding-bottom: 0.4em;
            border-bottom: 2px solid var(--border);
            letter-spacing: 0.02em;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-heading);
            margin: 1.8em 0 0.7em;
            letter-spacing: 0.02em;
        }

        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin: 1.5em 0 0.6em;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 1em 0 1.5em;
            padding-left: 1.5em;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.5em;
            padding-left: 0.3em;
        }

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

        .article-content ol li::marker {
            color: var(--primary);
            font-weight: 600;
        }

        .article-content blockquote {
            margin: 1.5em 0;
            padding: 18px 22px;
            border-left: 4px solid var(--accent);
            background: #fdfaf5;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #5a4a30;
            font-style: italic;
            font-size: 1rem;
        }

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

        .article-content a {
            color: var(--primary-light);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(38,71,115,0.25);
        }

        .article-content a:hover {
            color: var(--accent-dark);
            text-decoration-color: var(--accent);
        }

        .article-content img {
            margin: 1.5em auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            max-width: 100%;
            height: auto;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.95rem;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .article-content table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .article-content table td {
            padding: 11px 16px;
            border-bottom: 1px solid var(--border-light);
            background: #fff;
        }

        .article-content table tr:nth-child(even) td {
            background: #fafbfc;
        }

        .article-content code {
            background: #f0f3f6;
            padding: 3px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.88em;
            color: #c0392b;
        }

        .article-content pre {
            background: #1a2d3d;
            color: #e8ecf1;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-content pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

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

        .article-tags-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }

        .article-tag {
            display: inline-block;
            padding: 5px 13px;
            background: var(--bg-alt);
            color: var(--text-light);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition);
        }

        .article-tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ========================================
           侧边栏卡片
           ======================================== */
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 22px 20px;
            border: 1px solid var(--border-light);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
            display: flex;
            align-items: center;
            gap: 7px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        .sidebar-related-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .sidebar-related-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-related-item:hover {
            transform: translateX(3px);
        }

        .sidebar-related-item:hover .sidebar-related-title {
            color: var(--primary-light);
        }

        .sidebar-related-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }

        .sidebar-related-info {
            min-width: 0;
        }

        .sidebar-related-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
            margin-bottom: 4px;
        }

        .sidebar-related-date {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        /* ========================================
           相关推荐底部区
           ======================================== */
        .related-section {
            margin-bottom: 48px;
        }

        .related-section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .related-section-header h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .related-section-header h2 i {
            color: var(--accent);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--card-bg);
            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;
        }

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

        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

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

        .related-card-category {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: #fdf5ea;
            padding: 3px 10px;
            border-radius: 50px;
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .related-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            flex: 1;
        }

        .related-card-date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ========================================
           404 状态
           ======================================== */
        .not-found-section {
            text-align: center;
            padding: 80px 32px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            margin-bottom: 40px;
            border: 1px solid var(--border-light);
        }

        .not-found-icon {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .not-found-section h2 {
            font-size: 1.6rem;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .not-found-section p {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26,53,85,0.3);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            box-shadow: 0 6px 20px rgba(26,53,85,0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(200,150,62,0.3);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 20px rgba(200,150,62,0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ========================================
           页脚
           ======================================== */
        .site-footer {
            background: linear-gradient(180deg, #1a2d3d 0%, #0f1f2e 100%);
            color: rgba(255,255,255,0.75);
            padding: 40px 0 24px;
            margin-top: auto;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .site-footer .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.6;
            color: rgba(255,255,255,0.6);
        }

        .footer-links h4 {
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-links a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
            padding: 5px 0;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(3px);
        }

        .footer-bottom {
            padding-top: 18px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
        }

        /* ========================================
           响应式设计
           ======================================== */
        @media (max-width: 1200px) {
            .article-body-layout {
                grid-template-columns: 1fr 260px;
                gap: 24px;
            }
            .article-card-body {
                padding: 24px 28px;
            }
        }

        @media (max-width: 1024px) {
            :root {
                --sidebar-width: var(--sidebar-width-tablet);
            }
            .nav-brand-logo {
                font-size: 1rem;
            }
            .nav-brand-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .nav-brand-logo .logo-text .logo-main {
                font-size: 0.9rem;
            }
            .nav-sidebar-menu a {
                padding: 10px 14px;
                font-size: 0.88rem;
                gap: 8px;
            }
            .article-body-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-wrapper {
                padding: 0 24px;
            }
            .article-hero .container {
                padding: 0 24px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .app-layout {
                flex-direction: column;
            }
            .sidebar-nav {
                position: relative;
                width: 100%;
                height: auto;
                flex-direction: row;
                align-items: center;
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 8px;
                box-shadow: 0 2px 12px rgba(0,0,0,0.12);
                overflow: visible;
                background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            }
            .nav-brand {
                padding: 6px 0;
                border-bottom: none;
                margin-bottom: 0;
                flex-shrink: 1;
            }
            .nav-brand-logo {
                font-size: 0.95rem;
            }
            .nav-brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .nav-brand-logo .logo-text .logo-main {
                font-size: 0.85rem;
            }
            .nav-brand-logo .logo-text .logo-sub {
                font-size: 0.65rem;
            }
            .nav-sidebar-menu {
                flex-direction: row;
                padding: 4px 0;
                gap: 6px;
                flex-wrap: wrap;
            }
            .nav-sidebar-menu a {
                padding: 8px 13px;
                font-size: 0.82rem;
                border-radius: 50px;
                white-space: nowrap;
            }
            .nav-sidebar-menu a.active {
                box-shadow: none;
                background: rgba(255,255,255,0.18);
            }
            .nav-sidebar-menu a:hover {
                transform: none;
            }
            .nav-sidebar-divider {
                display: none;
            }
            .nav-sidebar-tag {
                display: none;
            }
            .main-content {
                margin-left: 0;
            }
            .content-wrapper {
                padding: 0 16px;
            }
            .article-hero {
                padding: 28px 0 24px;
                border-radius: 0 0 var(--radius) var(--radius);
                margin-bottom: 20px;
            }
            .article-hero .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .article-card-body {
                padding: 18px 16px;
            }
            .article-content {
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .article-body-layout {
                gap: 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .related-card-body {
                padding: 12px 14px;
            }
            .related-card-title {
                font-size: 0.85rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer {
                padding: 28px 0 18px;
                border-radius: var(--radius) var(--radius) 0 0;
            }
            .site-footer .container {
                padding: 0 16px;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .article-hero-meta {
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .sidebar-nav {
                padding: 8px 10px;
                gap: 4px;
            }
            .nav-brand-logo .logo-text .logo-sub {
                display: none;
            }
            .nav-sidebar-menu a {
                padding: 7px 10px;
                font-size: 0.76rem;
                gap: 5px;
            }
            .nav-sidebar-menu a i {
                font-size: 0.8rem;
                width: auto;
            }
            .article-hero h1 {
                font-size: 1.15rem;
            }
            .article-hero {
                padding: 20px 0 18px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-card-body {
                padding: 14px 12px;
            }
            .article-content {
                font-size: 0.93rem;
                line-height: 1.75;
            }
            .article-content h2 {
                font-size: 1.15rem;
            }
            .article-content h3 {
                font-size: 1.02rem;
            }
            .btn {
                padding: 9px 18px;
                font-size: 0.85rem;
            }
            .breadcrumb {
                font-size: 0.72rem;
                gap: 3px;
            }
        }