/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --primary-dark: #6D28D9;
            --primary-bg: #F5F3FF;
            --primary-glow: rgba(124, 58, 237, 0.15);
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --accent-dark: #D97706;
            --accent-bg: #FFFBEB;
            --dark: #0F172A;
            --dark-2: #1E293B;
            --dark-3: #334155;
            --bg: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #F1F5F9;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --success: #10B981;
            --error: #EF4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
            --shadow-primary: 0 4px 14px rgba(124, 58, 237, 0.35);
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;
            --space-4xl: 80px;
            --sidebar-width: 260px;
            --header-height: 64px;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text); font-weight: 700; }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
        p { color: var(--text-secondary); }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }
        .section-padding { padding: var(--space-4xl) 0; }
        .section-title {
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .section-title h2 { margin-bottom: var(--space-sm); }
        .section-title p { max-width: 640px; margin: 0 auto; color: var(--text-muted); font-size: 1.05rem; }
        .text-center { text-align: center; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-primary); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:active { transform: translateY(0); }
        .btn-accent {
            background: var(--accent);
            color: #1a1a2e;
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
        }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 100px;
            background: var(--primary-bg);
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: var(--accent-bg);
            color: var(--accent-dark);
        }
        .badge-success {
            background: #ECFDF5;
            color: #065F46;
        }
        .badge-sm { padding: 2px 8px; font-size: 0.65rem; }

        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--dark);
            color: #E2E8F0;
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            padding: var(--space-lg) var(--space-xl);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
        }
        .sidebar-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
        }
        .sidebar-brand .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .sidebar-nav {
            flex: 1;
            padding: var(--space-lg) var(--space-md);
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }
        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: #94A3B8;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 1rem; }
        .sidebar-nav .nav-link:hover {
            background: rgba(255,255,255,0.06);
            color: #E2E8F0;
        }
        .sidebar-nav .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
        }
        .sidebar-nav .nav-link.active::before {
            content: '';
            position: absolute;
            left: -8px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-footer {
            padding: var(--space-md) var(--space-xl);
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.8rem;
            color: #64748B;
            flex-shrink: 0;
            text-align: center;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--dark);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 var(--space-lg);
            box-shadow: 0 2px 12px rgba(0,0,0,0.15);
        }
        .mobile-header .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }
        .menu-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #E2E8F0;
            font-size: 1.4rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .menu-toggle:hover { background: rgba(255,255,255,0.1); }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 998;
            backdrop-filter: blur(4px);
        }
        .sidebar-overlay.active { display: block; }

        /* ===== Main Content ===== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            background: var(--bg);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: var(--dark);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover::before { transform: scale(1); }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.6) 50%, rgba(124,58,237,0.25) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: var(--space-4xl) var(--space-lg);
        }
        .hero-content { max-width: 680px; }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--space-sm);
            background: rgba(124,58,237,0.2);
            border: 1px solid rgba(124,58,237,0.3);
            padding: 6px 16px;
            border-radius: 100px;
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: var(--space-lg);
        }
        .hero .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            color: #fff;
            margin-bottom: var(--space-lg);
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .hero h1 span { background: linear-gradient(135deg, var(--accent-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p {
            color: #94A3B8;
            font-size: 1.15rem;
            max-width: 560px;
            margin-bottom: var(--space-xl);
            line-height: 1.8;
        }
        .hero .hero-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
        .hero .hero-stats {
            display: flex;
            gap: var(--space-2xl);
            margin-top: var(--space-2xl);
            padding-top: var(--space-xl);
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero .hero-stats .stat-item { text-align: left; }
        .hero .hero-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: #64748B;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-xl);
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-bg);
        }
        .feature-card .icon-box {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto var(--space-md);
        }
        .feature-card .icon-box.purple { background: var(--primary-bg); color: var(--primary); }
        .feature-card .icon-box.amber { background: var(--accent-bg); color: var(--accent-dark); }
        .feature-card .icon-box.green { background: #ECFDF5; color: #065F46; }
        .feature-card h3 { margin-bottom: var(--space-sm); font-size: 1.2rem; }
        .feature-card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }

        /* ===== Categories ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-xl);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--dark);
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-lg);
            transition: all var(--transition);
            cursor: pointer;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.45;
            transition: transform 0.5s ease, opacity 0.5s ease;
        }
        .category-card:hover .cat-bg { transform: scale(1.08); opacity: 0.6; }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.3) 60%, transparent 100%);
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: var(--space-xl) var(--space-lg);
            width: 100%;
        }
        .category-card .cat-content h3 {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: var(--space-xs);
        }
        .category-card .cat-content p {
            color: #94A3B8;
            font-size: 0.88rem;
            margin-bottom: var(--space-md);
        }
        .category-card .cat-btn {
            display: inline-flex;
            align-items: center;
            gap: var(--space-sm);
            color: var(--accent-light);
            font-weight: 600;
            font-size: 0.88rem;
            transition: gap var(--transition);
        }
        .category-card .cat-btn i { font-size: 0.75rem; transition: transform var(--transition); }
        .category-card:hover .cat-btn i { transform: translateX(4px); }

        /* ===== Latest Posts (CMS) ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: var(--space-lg);
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-bg);
        }
        .post-card .post-thumb {
            width: 100%;
            height: 180px;
            background: var(--dark-2);
            position: relative;
            overflow: hidden;
        }
        .post-card .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .post-card:hover .post-thumb img { transform: scale(1.05); }
        .post-card .post-thumb .post-cat {
            position: absolute;
            top: var(--space-md);
            left: var(--space-md);
        }
        .post-card .post-body {
            padding: var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card .post-body h3 {
            font-size: 1.05rem;
            margin-bottom: var(--space-sm);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-body h3 a { color: var(--text); }
        .post-card .post-body h3 a:hover { color: var(--primary); }
        .post-card .post-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: var(--space-md);
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: var(--space-md);
            border-top: 1px solid var(--border-light);
        }
        .post-card .post-meta .post-date { display: flex; align-items: center; gap: 4px; }
        .post-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: var(--space-3xl) var(--space-lg);
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            color: var(--text-muted);
        }
        .post-empty i { font-size: 2rem; margin-bottom: var(--space-md); color: var(--border); }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-xl);
            position: relative;
            z-index: 1;
        }
        .stat-card {
            text-align: center;
            padding: var(--space-xl) var(--space-lg);
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.06);
            transition: all var(--transition);
        }
        .stat-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-2px); }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: var(--space-md);
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: var(--space-xs);
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: #64748B;
        }

        /* ===== Recommended ===== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-xl);
        }
        .recommend-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .recommend-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
            border-color: var(--primary-bg);
        }
        .recommend-card .rec-img {
            width: 100%;
            height: 200px;
            background: var(--dark-2);
            overflow: hidden;
        }
        .recommend-card .rec-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .recommend-card:hover .rec-img img { transform: scale(1.08); }
        .recommend-card .rec-body {
            padding: var(--space-lg);
        }
        .recommend-card .rec-body .rec-tag {
            display: inline-block;
            padding: 2px 10px;
            font-size: 0.7rem;
            font-weight: 600;
            border-radius: 100px;
            background: var(--primary-bg);
            color: var(--primary);
            margin-bottom: var(--space-sm);
        }
        .recommend-card .rec-body h3 {
            font-size: 1rem;
            margin-bottom: var(--space-sm);
            line-height: 1.4;
        }
        .recommend-card .rec-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: var(--space-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-bg); box-shadow: var(--shadow-sm); }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-lg);
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: none;
            cursor: pointer;
            gap: var(--space-md);
            transition: color var(--transition);
        }
        .faq-item .faq-question:hover { color: var(--primary); }
        .faq-item .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 var(--space-lg) var(--space-lg);
        }
        .faq-item .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #fff;
            margin-bottom: var(--space-md);
        }
        .cta-content p {
            color: #94A3B8;
            margin-bottom: var(--space-xl);
            font-size: 1.05rem;
        }
        .cta-content .cta-actions { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #64748B;
            padding: var(--space-3xl) 0 var(--space-lg);
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-2xl);
        }
        .footer-brand .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: var(--space-md);
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: #64748B;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #E2E8F0;
            font-size: 0.95rem;
            margin-bottom: var(--space-md);
        }
        .footer-col ul li { margin-bottom: var(--space-sm); }
        .footer-col ul li a {
            color: #64748B;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--primary-light); }
        .footer-bottom {
            padding-top: var(--space-lg);
            border-top: 1px solid rgba(255,255,255,0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-md);
            font-size: 0.82rem;
        }
        .footer-bottom a { color: #64748B; }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .hero .hero-stats { gap: var(--space-xl); flex-wrap: wrap; }
            .hero .hero-stats .stat-item { flex: 1 1 40%; }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 4px 0 30px rgba(0,0,0,0.3);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-height);
            }
            .hero {
                min-height: 480px;
            }
            .hero .hero-stats .stat-number { font-size: 1.4rem; }
            .features-grid { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .recommend-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .hero .hero-actions { flex-direction: column; align-items: flex-start; }
            .hero .hero-actions .btn { width: 100%; justify-content: center; }
            .section-padding { padding: var(--space-3xl) 0; }
            .cta-content .cta-actions { flex-direction: column; align-items: center; }
            .cta-content .cta-actions .btn { width: 100%; max-width: 300px; justify-content: center; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .sidebar-nav .nav-link.active::before { display: none; }
        }

        @media (max-width: 520px) {
            .hero { min-height: 400px; }
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.95rem; }
            .hero .hero-stats { flex-direction: column; gap: var(--space-md); }
            .hero .hero-stats .stat-item { flex: none; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
            .stat-card { padding: var(--space-md); }
            .stat-card .stat-number { font-size: 1.6rem; }
            .categories-grid { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .container { padding: 0 var(--space-md); }
            .section-title h2 { font-size: 1.5rem; }
        }

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

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --accent: #fdcb6e;
            --bg: #0f0e1a;
            --bg-card: #1a1930;
            --bg-card-hover: #222145;
            --bg-sidebar: #12102a;
            --bg-dark: #0a0918;
            --text: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #7a7a9a;
            --border: rgba(108, 92, 231, 0.2);
            --border-hover: rgba(108, 92, 231, 0.4);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 48px rgba(108, 92, 231, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --sidebar-width: 220px;
            --header-height: 0px;
            --spacing-section: 5rem;
            --spacing-block: 3rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::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);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
        }

        /* ===== 左侧导航 Sidebar ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 2rem 0 1.5rem;
            transition: transform var(--transition);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0 1.5rem 2rem;
            border-bottom: 1px solid var(--border);
            margin-bottom: 1.5rem;
        }
        .sidebar-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
        }
        .sidebar-brand .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--text), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.5px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
            padding: 0 0.75rem;
            flex: 1;
            overflow-y: auto;
        }
        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            padding: 0.8rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-link:hover {
            color: var(--text);
            background: rgba(108, 92, 231, 0.12);
        }
        .sidebar-nav .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
        }
        .sidebar-nav .nav-link.active i {
            color: #fff;
        }
        .sidebar-nav .nav-link:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .sidebar-footer {
            padding: 1.5rem 1.5rem 0;
            border-top: 1px solid var(--border);
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
        }

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

        /* ===== 页面横幅 ===== */
        .page-banner {
            position: relative;
            padding: 5rem 0 4rem;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(253, 121, 168, 0.08));
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            margin-bottom: 0.75rem;
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            max-width: 640px;
            color: var(--text-secondary);
        }
        .breadcrumb {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--primary-light);
        }

        /* ===== 分类筛选标签 ===== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            padding: 2.5rem 0 0;
        }
        .filter-tabs .tag {
            display: inline-block;
            padding: 0.45rem 1.2rem;
            background: rgba(108, 92, 231, 0.1);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-tabs .tag:hover {
            background: rgba(108, 92, 231, 0.2);
            color: var(--text);
            border-color: var(--border-hover);
        }
        .filter-tabs .tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }

        /* ===== 攻略卡片网格 ===== */
        .section-guides {
            padding: var(--spacing-section) 0;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 1.8rem;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }
        .guide-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .guide-card .card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body .card-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 0.75rem;
        }
        .guide-card .card-body .card-tags span {
            font-size: 0.7rem;
            padding: 0.2rem 0.75rem;
            border-radius: 50px;
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(108, 92, 231, 0.2);
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .guide-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 0.6rem;
            color: var(--text);
            line-height: 1.4;
        }
        .guide-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 1rem;
            line-height: 1.6;
        }
        .guide-card .card-body .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 1rem;
            margin-top: auto;
        }
        .guide-card .card-body .card-meta .views i {
            margin-right: 4px;
            font-size: 0.7rem;
        }
        .guide-card .card-body .card-meta .read-more {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-body .card-meta .read-more:hover {
            color: var(--accent);
            gap: 8px;
        }

        /* ===== 热门攻略推荐 ===== */
        .section-featured {
            padding: 0 0 var(--spacing-section);
        }
        .section-featured .section-title {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 2rem;
        }
        .section-featured .section-title i {
            color: var(--secondary);
            font-size: 1.4rem;
        }
        .featured-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.2rem;
        }
        .featured-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 1rem 1.2rem;
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: default;
        }
        .featured-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateX(4px);
        }
        .featured-item .rank {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-light);
            min-width: 32px;
            text-align: center;
            opacity: 0.7;
        }
        .featured-item .rank.gold {
            color: var(--accent);
            opacity: 1;
        }
        .featured-item .rank.silver {
            color: #c0c0c0;
            opacity: 1;
        }
        .featured-item .rank.bronze {
            color: #cd7f32;
            opacity: 1;
        }
        .featured-item .info {
            flex: 1;
        }
        .featured-item .info h4 {
            font-size: 0.95rem;
            margin-bottom: 0.2rem;
            color: var(--text);
        }
        .featured-item .info span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .featured-item .badge {
            background: rgba(253, 121, 168, 0.15);
            color: var(--secondary);
            font-size: 0.7rem;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            font-weight: 600;
            border: 1px solid rgba(253, 121, 168, 0.2);
            white-space: nowrap;
        }

        /* ===== 攻略分类导航 ===== */
        .section-categories {
            padding: 0 0 var(--spacing-section);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
        }
        .category-chip {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 1rem 1.2rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            color: var(--text-secondary);
            font-weight: 500;
        }
        .category-chip:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            color: var(--text);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .category-chip i {
            font-size: 1.2rem;
            color: var(--primary-light);
            width: 24px;
            text-align: center;
        }

        /* ===== CTA 区块 ===== */
        .section-cta {
            padding: 0 0 var(--spacing-section);
        }
        .cta-block {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.12), rgba(253, 121, 168, 0.08));
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-block .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-size: 1.8rem;
            margin-bottom: 0.75rem;
        }
        .cta-block p {
            font-size: 1.05rem;
            max-width: 540px;
            margin: 0 auto 2rem;
            color: var(--text-secondary);
        }
        .cta-block .btn-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            background: none;
            color: var(--text);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.5);
            color: #fff;
        }
        .btn-outline {
            border: 2px solid var(--border);
            color: var(--text-secondary);
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--text);
            background: rgba(108, 92, 231, 0.08);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 0 0 var(--spacing-section);
        }
        .faq-grid {
            display: grid;
            gap: 0.8rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-item .faq-q {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 1rem;
            transition: background var(--transition);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-item .faq-q:hover {
            background: rgba(108, 92, 231, 0.05);
        }
        .faq-item .faq-q::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 1.5rem 1.2rem;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            gap: 0.5rem;
            justify-content: center;
            padding: 2.5rem 0 0;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .pagination a:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            color: var(--text);
        }
        .pagination .active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border);
            padding: 3.5rem 0 0;
            margin-top: auto;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--text), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .site-footer .footer-bottom a {
            color: var(--primary-light);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 移动端抽屉菜单按钮 ===== */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 1rem;
            left: 1rem;
            z-index: 1100;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .menu-toggle:hover {
            background: var(--bg-card-hover);
        }
        .menu-toggle:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }
            .menu-toggle {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 0;
            }
            .page-banner {
                padding: 3.5rem 0 2.5rem;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .guide-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
            .cta-block {
                padding: 2.5rem 1.5rem;
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
            .featured-list {
                grid-template-columns: 1fr 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .filter-tabs {
                gap: 0.4rem;
            }
            .filter-tabs .tag {
                font-size: 0.78rem;
                padding: 0.35rem 0.9rem;
            }
            .faq-grid {
                max-width: 100%;
            }
            .cta-block .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .pagination a,
            .pagination span {
                width: 36px;
                height: 36px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .featured-list {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .page-banner {
                padding: 2.5rem 0 2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .sidebar {
                width: 100%;
                max-width: 280px;
            }
            .cta-block h2 {
                font-size: 1.2rem;
            }
            .cta-block p {
                font-size: 0.9rem;
            }
            .filter-tabs .tag {
                font-size: 0.72rem;
                padding: 0.3rem 0.75rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-muted);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }

        /* ===== 辅助 ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: article */
:root {
  --primary: #1a1a2e;
  --primary-light: #16213e;
  --accent: #e94560;
  --accent-hover: #d63851;
  --blue-deep: #0f3460;
  --gold: #fdcb6e;
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #2d3436;
  --text-light: #636e72;
  --text-muted: #b2bec3;
  --border: #e1e8ed;
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --sidebar-width: 240px;
  --header-height: 60px;
  --transition: all 0.25s ease;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; display: flex; min-height: 100vh; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--primary); }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.2rem; }
p { margin-bottom: 1rem; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Sidebar ===== */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
  background: var(--primary); color: #fff; z-index: 1000;
  display: flex; flex-direction: column; padding: 28px 0 20px;
  transition: var(--transition); overflow-y: auto;
}
.sidebar-logo { padding: 0 24px 24px; border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 20px; }
.sidebar-logo .logo-text { font-size: 1.2rem; font-weight: 700; color: #fff; letter-spacing: 0.5px; display: flex; align-items: center; gap: 10px; }
.sidebar-logo .logo-text i { color: var(--accent); font-size: 1.4rem; }
.sidebar-nav { display: flex; flex-direction: column; gap: 4px; padding: 0 12px; }
.sidebar-nav .nav-link {
  display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.7); font-size: 0.95rem; font-weight: 500;
  transition: var(--transition); position: relative;
}
.sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 1.05rem; }
.sidebar-nav .nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar-nav .nav-link.active { background: var(--accent); color: #fff; box-shadow: 0 4px 12px rgba(233,69,96,0.35); }
.sidebar-nav .nav-link.active::after { content: ''; position: absolute; right: 0; top: 50%; transform: translateY(-50%); width: 3px; height: 20px; background: #fff; border-radius: 3px 0 0 3px; }
.sidebar-footer { margin-top: auto; padding: 20px 24px 0; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.8rem; color: rgba(255,255,255,0.4); text-align: center; }

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

/* ===== Mobile Header ===== */
.mobile-header { display: none; position: fixed; top: 0; left: 0; right: 0; height: var(--header-height); background: var(--primary); z-index: 999; padding: 0 20px; align-items: center; justify-content: space-between; }
.mobile-header .logo-text { color: #fff; font-weight: 700; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; }
.mobile-header .logo-text i { color: var(--accent); }
.mobile-toggle { background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; padding: 4px 8px; border-radius: 4px; transition: var(--transition); }
.mobile-toggle:hover { background: rgba(255,255,255,0.1); }
.sidebar-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 999; }

/* ===== Article Banner ===== */
.article-banner {
  position: relative; padding: 80px 0 60px; background: var(--primary);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center; background-blend-mode: overlay;
  color: #fff; overflow: hidden;
}
.article-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(15,52,96,0.75) 100%); }
.article-banner .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 24px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255,255,255,0.35); }
.breadcrumb .current { color: var(--gold); }
.article-banner .article-category { display: inline-block; background: var(--accent); color: #fff; padding: 4px 16px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.3px; }
.article-banner h1 { font-size: 2.2rem; color: #fff; max-width: 800px; line-height: 1.35; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,0.3); }
.article-meta { display: flex; align-items: center; gap: 20px; font-size: 0.9rem; color: rgba(255,255,255,0.7); flex-wrap: wrap; }
.article-meta i { margin-right: 4px; }
.article-meta .meta-item { display: flex; align-items: center; gap: 4px; }

/* ===== Article Body ===== */
.article-body { flex: 1; padding: 40px 0; }
.article-content {
  background: var(--card-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: 40px; max-width: 860px; margin: 0 auto 40px;
}
.article-content .content-img { margin: 24px 0; border-radius: var(--radius-sm); overflow: hidden; }
.article-content h2 { margin-top: 32px; }
.article-content h3 { margin-top: 24px; color: var(--primary-light); }
.article-content p { margin-bottom: 1.2rem; color: var(--text); }
.article-content ul, .article-content ol { margin-bottom: 1.2rem; padding-left: 24px; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 6px; color: var(--text); }
.article-content blockquote { border-left: 4px solid var(--accent); padding: 16px 20px; margin: 24px 0; background: #fdf2f4; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light); }
.article-content blockquote p { margin-bottom: 0; }
.article-tags { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 20px 0 0; border-top: 1px solid var(--border); margin-top: 32px; }
.article-tags .tag-label { font-size: 0.85rem; color: var(--text-light); font-weight: 600; }
.article-tags .tag { display: inline-block; background: var(--bg); color: var(--text-light); padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; transition: var(--transition); }
.article-tags .tag:hover { background: var(--accent); color: #fff; }

/* ===== Not Found ===== */
.not-found { text-align: center; padding: 80px 20px; max-width: 600px; margin: 0 auto; }
.not-found i { font-size: 3.5rem; color: var(--text-muted); margin-bottom: 20px; }
.not-found h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 12px; }
.not-found p { color: var(--text-light); margin-bottom: 24px; }
.not-found .btn { display: inline-flex; align-items: center; gap: 8px; }

/* ===== Related Section ===== */
.related-section { padding: 40px 0 60px; background: var(--bg); }
.related-section h2 { text-align: center; margin-bottom: 32px; position: relative; }
.related-section h2::after { content: ''; display: block; width: 50px; height: 3px; background: var(--accent); margin: 12px auto 0; border-radius: 3px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.related-card {
  background: var(--card-bg); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition); display: flex; flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.related-card .card-img { height: 160px; background-size: cover; background-position: center; position: relative; }
.related-card .card-img .card-cat { position: absolute; top: 12px; left: 12px; background: var(--accent); color: #fff; padding: 2px 12px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }
.related-card .card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.related-card .card-body h3 { font-size: 1rem; margin-bottom: 8px; }
.related-card .card-body h3 a { color: var(--primary); }
.related-card .card-body h3 a:hover { color: var(--accent); }
.related-card .card-body p { font-size: 0.88rem; color: var(--text-light); margin-bottom: 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body .card-meta { font-size: 0.78rem; color: var(--text-muted); display: flex; align-items: center; gap: 12px; }
.related-empty { text-align: center; padding: 40px; color: var(--text-light); grid-column: 1 / -1; }

/* ===== CTA Section ===== */
.cta-section { background: var(--primary); padding: 60px 0; text-align: center; color: #fff; }
.cta-section h2 { color: #fff; font-size: 1.8rem; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-section .cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 28px; border-radius: 30px; font-size: 0.95rem; font-weight: 600; border: none; cursor: pointer; transition: var(--transition); text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(233,69,96,0.35); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }
.btn-sm { padding: 6px 18px; font-size: 0.85rem; }

/* ===== Footer ===== */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 48px 0 20px; border-top: 1px solid rgba(255,255,255,0.06); }
.site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.site-footer .footer-brand .logo-text { font-size: 1.2rem; font-weight: 700; color: #fff; display: block; margin-bottom: 12px; }
.site-footer .footer-brand p { font-size: 0.88rem; line-height: 1.6; color: rgba(255,255,255,0.55); max-width: 360px; }
.site-footer .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
.site-footer .footer-col ul li { margin-bottom: 10px; }
.site-footer .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.88rem; transition: var(--transition); }
.site-footer .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.site-footer .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.4); }
.site-footer .footer-bottom a { color: rgba(255,255,255,0.5); }
.site-footer .footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .article-banner h1 { font-size: 1.8rem; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .mobile-header { display: flex; }
  .main-content { margin-left: 0; padding-top: var(--header-height); }
  .article-banner { padding: 60px 0 40px; }
  .article-banner h1 { font-size: 1.5rem; }
  .article-content { padding: 24px 20px; margin-left: -20px; margin-right: -20px; border-radius: 0; }
  .related-grid { grid-template-columns: 1fr; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .site-footer .footer-bottom { flex-direction: column; text-align: center; }
  .cta-section h2 { font-size: 1.4rem; }
  .article-meta { gap: 12px; font-size: 0.82rem; }
}
@media (max-width: 520px) {
  .article-banner h1 { font-size: 1.2rem; }
  .article-banner { padding: 40px 0 30px; }
  .article-content { padding: 20px 16px; }
  .cta-section .cta-btns { flex-direction: column; align-items: center; }
  .breadcrumb { font-size: 0.78rem; }
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }