/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #0a0e1a;
            --clr-primary-light: #1a1f2e;
            --clr-secondary: #d4a853;
            --clr-secondary-light: #e8b84b;
            --clr-accent: #e74c3c;
            --clr-accent-dark: #c0392b;
            --clr-bg: #070a14;
            --clr-surface: #0f1322;
            --clr-card: #151b2e;
            --clr-card-hover: #1c2340;
            --clr-text: #f0f0f0;
            --clr-text-secondary: #b0b8c8;
            --clr-text-muted: #6a7288;
            --clr-border: #2a3148;
            --clr-border-light: #3a4258;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(212,168,83,0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
            --footer-bg: #050812;
        }

        /* ===== Reset ===== */
        *, *::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(--clr-text);
            background: var(--clr-bg);
            min-height: 100vh;
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--clr-secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-secondary-light); }
        a:focus-visible { outline: 2px solid var(--clr-secondary); outline-offset: 4px; border-radius: 2px; }
        button, input, select, 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; font-weight: 700; color: var(--clr-text); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--clr-text-secondary); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar { width: 6px; background: var(--clr-bg); }
        ::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--clr-border-light); }

        /* ===== 选择文本 ===== */
        ::selection { background: var(--clr-secondary); color: var(--clr-primary); }

        /* ===== 导航 (桌面) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 14, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--clr-border);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled { background: rgba(7, 10, 20, 0.96); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--clr-text);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo i { color: var(--clr-secondary); font-size: 1.6rem; }
        .logo span { color: var(--clr-secondary); }
        .desktop-nav { display: flex; align-items: center; gap: 8px; }
        .desktop-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--clr-text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .desktop-nav a:hover { color: var(--clr-text); background: rgba(255,255,255,0.05); }
        .desktop-nav a.active {
            color: var(--clr-secondary);
            background: rgba(212,168,83,0.12);
        }
        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--clr-secondary);
            border-radius: 1px;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--clr-secondary), #c9952e);
            color: var(--clr-primary);
            font-weight: 700;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .header-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,83,0.35); color: var(--clr-primary); }
        .header-cta i { font-size: 0.85rem; }

        /* ===== 移动端底部导航 ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(10, 14, 26, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--clr-border);
            padding: 0 8px;
            align-items: center;
            justify-content: space-around;
        }
        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            color: var(--clr-text-muted);
            font-size: 0.65rem;
            font-weight: 500;
            transition: all var(--transition);
            min-width: 60px;
        }
        .mobile-bottom-nav a i { font-size: 1.2rem; transition: color var(--transition); }
        .mobile-bottom-nav a:hover { color: var(--clr-text-secondary); }
        .mobile-bottom-nav a.active { color: var(--clr-secondary); }
        .mobile-bottom-nav a.active i { color: var(--clr-secondary); }
        .mobile-bottom-nav .nav-label { line-height: 1.2; }

        @media (max-width: 768px) {
            .desktop-nav, .header-cta { display: none; }
            .mobile-bottom-nav { display: flex; }
            body { padding-bottom: 64px; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--clr-bg);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            filter: saturate(1.1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7,10,20,0.88) 0%, rgba(7,10,20,0.6) 50%, rgba(10,14,26,0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(212,168,83,0.15);
            border: 1px solid rgba(212,168,83,0.3);
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--clr-secondary);
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 24px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff, #e0d5b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--clr-text-secondary);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--clr-secondary), #c9952e);
            color: var(--clr-primary);
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: none;
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(212,168,83,0.35); color: var(--clr-primary); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: var(--clr-text);
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-md);
            border: 1.5px solid var(--clr-border-light);
            transition: all var(--transition);
        }
        .btn-outline:hover { border-color: var(--clr-secondary); color: var(--clr-secondary); transform: translateY(-3px); }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--clr-secondary); display: block; }
        .hero-stat .label { font-size: 0.85rem; color: var(--clr-text-muted); margin-top: 4px; }
        @media (max-width: 768px) {
            .hero { min-height: 60vh; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.4rem; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-dark { background: var(--clr-surface); }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { color: var(--clr-text-muted); font-size: 1.05rem; }
        .section-header .subtitle {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(212,168,83,0.1);
            border-radius: 40px;
            font-size: 0.8rem;
            color: var(--clr-secondary);
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        @media (max-width: 768px) { .section { padding: 48px 0; } }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
        }
        @media (max-width: 480px) {
            .grid-4 { grid-template-columns: 1fr; }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition);
        }
        .card:hover { border-color: var(--clr-border-light); background: var(--clr-card-hover); transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(212,168,83,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--clr-secondary);
            margin-bottom: 16px;
        }
        .card h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .card p { font-size: 0.92rem; color: var(--clr-text-muted); margin-bottom: 0; }
        .card .tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(212,168,83,0.1);
            border-radius: 40px;
            font-size: 0.75rem;
            color: var(--clr-secondary);
            font-weight: 500;
            margin-top: 12px;
        }
        .card-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 180px;
            background: var(--clr-surface);
            margin: -24px -24px 16px -24px;
        }
        .card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
        .card:hover .card-cover img { transform: scale(1.05); }

        /* ===== 特色卡片（封面大图） ===== */
        .feature-card {
            display: flex;
            flex-direction: column;
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }
        .feature-card:hover { border-color: var(--clr-border-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .feature-card .fc-image {
            height: 200px;
            background: var(--clr-surface);
            overflow: hidden;
        }
        .feature-card .fc-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
        .feature-card:hover .fc-image img { transform: scale(1.05); }
        .feature-card .fc-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .feature-card .fc-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .feature-card .fc-body p { font-size: 0.9rem; color: var(--clr-text-muted); flex: 1; margin-bottom: 16px; }
        .feature-card .fc-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--clr-text-muted);
            border-top: 1px solid var(--clr-border);
            padding-top: 14px;
        }
        .feature-card .fc-meta .fc-cat {
            padding: 2px 12px;
            background: rgba(212,168,83,0.1);
            border-radius: 40px;
            color: var(--clr-secondary);
            font-weight: 500;
        }

        /* ===== 文章列表卡片 ===== */
        .post-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .post-item:last-child { border-bottom: none; }
        .post-item:hover { padding-left: 8px; }
        .post-item .pi-thumb {
            width: 140px;
            min-height: 90px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--clr-surface);
            flex-shrink: 0;
        }
        .post-item .pi-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .post-item .pi-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
        .post-item .pi-body h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
        .post-item .pi-body h4 a { color: var(--clr-text); }
        .post-item .pi-body h4 a:hover { color: var(--clr-secondary); }
        .post-item .pi-body p { font-size: 0.88rem; color: var(--clr-text-muted); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-item .pi-meta { display: flex; gap: 16px; font-size: 0.78rem; color: var(--clr-text-muted); }
        .post-item .pi-meta .pi-cat { color: var(--clr-secondary); font-weight: 500; }
        @media (max-width: 640px) {
            .post-item { flex-direction: column; gap: 12px; }
            .post-item .pi-thumb { width: 100%; height: 160px; }
        }

        /* ===== 标签 ===== */
        .tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .tag-item {
            padding: 4px 14px;
            background: var(--clr-surface);
            border: 1px solid var(--clr-border);
            border-radius: 40px;
            font-size: 0.82rem;
            color: var(--clr-text-secondary);
            transition: all var(--transition);
        }
        .tag-item:hover { border-color: var(--clr-secondary); color: var(--clr-secondary); background: rgba(212,168,83,0.08); }

        /* ===== 数据 / 统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-card:hover { border-color: var(--clr-border-light); transform: translateY(-2px); }
        .stat-card .stat-icon { font-size: 1.8rem; color: var(--clr-secondary); margin-bottom: 12px; }
        .stat-card .stat-num { font-size: 2rem; font-weight: 800; color: var(--clr-text); display: block; }
        .stat-card .stat-label { font-size: 0.88rem; color: var(--clr-text-muted); margin-top: 6px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; } }

        /* ===== 流程 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover { border-color: var(--clr-border-light); transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 44px;
            height: 44px;
            line-height: 44px;
            text-align: center;
            background: rgba(212,168,83,0.12);
            color: var(--clr-secondary);
            font-weight: 800;
            font-size: 1.2rem;
            border-radius: 50%;
            margin: 0 auto 16px;
        }
        .step-item h4 { font-size: 1rem; margin-bottom: 6px; }
        .step-item p { font-size: 0.85rem; color: var(--clr-text-muted); margin-bottom: 0; }
        @media (max-width: 768px) { .steps { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--clr-border-light); }
        .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--clr-text);
            font-size: 0.98rem;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-q:hover { background: rgba(255,255,255,0.02); }
        .faq-q i { color: var(--clr-secondary); font-size: 0.85rem; transition: transform var(--transition); }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .faq-a p { font-size: 0.9rem; color: var(--clr-text-muted); margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--clr-surface);
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(212,168,83,0.08), rgba(10,14,26,0.6));
            border: 1px solid rgba(212,168,83,0.2);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .cta-box h2 { margin-bottom: 12px; }
        .cta-box p { color: var(--clr-text-muted); max-width: 560px; margin: 0 auto 28px; }
        .cta-box .btn-primary { font-size: 1.05rem; padding: 16px 44px; }
        @media (max-width: 768px) { .cta-box { padding: 36px 20px; } }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            border-top: 1px solid var(--clr-border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.88rem; color: var(--clr-text-muted); max-width: 300px; }
        .footer-col h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 16px; color: var(--clr-text); }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--clr-secondary); }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--clr-text-muted);
        }
        .footer-bottom a { color: var(--clr-text-muted); }
        .footer-bottom a:hover { color: var(--clr-secondary); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--clr-text-muted);
        }
        .empty-state i { font-size: 2.4rem; color: var(--clr-border); margin-bottom: 16px; display: block; }
        .empty-state p { font-size: 1rem; }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--clr-border), transparent);
            margin: 0;
            border: none;
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 2.6rem; }
        }
        @media (max-width: 520px) {
            .hero { min-height: 50vh; }
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.92rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
            .section-header h2 { font-size: 1.4rem; }
            .card { padding: 18px; }
            .stat-card { padding: 18px 12px; }
            .stat-card .stat-num { font-size: 1.5rem; }
            .faq-q { padding: 14px 16px; font-size: 0.9rem; }
            .faq-a { padding: 0 16px; }
            .faq-item.open .faq-a { padding: 0 16px 14px; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e3000f;
            --primary-dark: #b8000a;
            --primary-light: #ff4d4d;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --accent: #ffd700;
            --bg-dark: #0c0c1a;
            --bg-body: #f5f5fa;
            --bg-card: #ffffff;
            --bg-section-alt: #eef0f7;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #7a7a9a;
            --text-white: #ffffff;
            --border-color: #e0e0ee;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-glow: 0 0 20px rgba(227,0,15,0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --tab-h: 68px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: var(--tab-h);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; }
        button:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        input, textarea { font-family: inherit; font-size: inherit; border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 10px 16px; transition: var(--transition); }
        input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(227,0,15,0.12); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-section-alt); }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-dark h2, .section-dark h3, .section-dark h4 { color: var(--text-white); }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .mb-5 { margin-bottom: 48px; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .mt-5 { margin-top: 48px; }
        .gap-1 { gap: 8px; }
        .gap-2 { gap: 16px; }
        .gap-3 { gap: 24px; }
        .gap-4 { gap: 32px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 12px 28px; border-radius: var(--radius-md); font-weight: 600; font-size: 15px;
            transition: var(--transition); border: 2px solid transparent; white-space: nowrap;
        }
        .btn-primary { background: var(--primary); color: var(--text-white); border-color: var(--primary); }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
        .btn-outline:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-outline:active { transform: translateY(0); }
        .btn-light { background: var(--text-white); color: var(--primary); border-color: var(--text-white); }
        .btn-light:hover { background: #f0f0f0; color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-lg { padding: 16px 36px; font-size: 17px; border-radius: var(--radius-lg); }
        .btn-sm { padding: 8px 18px; font-size: 13px; border-radius: var(--radius-sm); }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 12px; font-weight: 600;
            background: var(--primary); color: var(--text-white); letter-spacing: 0.3px;
        }
        .badge-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
        .badge-accent { background: var(--accent); color: var(--text-primary); }
        .badge-sm { padding: 2px 10px; font-size: 11px; }
        .tag {
            display: inline-block; padding: 3px 12px; border-radius: var(--radius-sm); font-size: 12px; font-weight: 500;
            background: var(--bg-section-alt); color: var(--text-secondary); transition: var(--transition);
        }
        .tag:hover { background: var(--primary); color: var(--text-white); }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; height: var(--header-h); z-index: 1000;
            background: rgba(12,12,26,0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06); box-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .header-inner {
            max-width: var(--container-max); margin: 0 auto; padding: 0 20px; height: 100%;
            display: flex; align-items: center; justify-content: space-between;
        }
        .logo {
            display: flex; align-items: center; gap: 6px; font-size: 22px; font-weight: 800;
            color: var(--text-white); letter-spacing: -0.5px; transition: var(--transition);
        }
        .logo i { color: var(--primary); font-size: 26px; }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text-white); opacity: 0.9; }
        .desktop-nav { display: flex; align-items: center; gap: 4px; }
        .desktop-nav a {
            padding: 8px 18px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 500;
            color: rgba(255,255,255,0.75); transition: var(--transition); position: relative;
        }
        .desktop-nav a:hover { color: var(--text-white); background: rgba(255,255,255,0.06); }
        .desktop-nav a.active { color: var(--text-white); background: rgba(227,0,15,0.2); }
        .desktop-nav a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--primary); border-radius: 2px;
        }
        .header-cta {
            display: inline-flex; align-items: center; gap: 6px; padding: 8px 22px;
            background: var(--primary); color: var(--text-white); border-radius: var(--radius-md);
            font-weight: 600; font-size: 14px; transition: var(--transition);
        }
        .header-cta:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
        .header-cta i { font-size: 14px; }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            display: none; position: fixed; bottom: 0; left: 0; width: 100%; height: var(--tab-h);
            background: rgba(12,12,26,0.96); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255,255,255,0.06); z-index: 1001; justify-content: space-around; align-items: center;
            padding: 0 8px; box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
        }
        .tab-item {
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            gap: 2px; padding: 6px 10px; border-radius: var(--radius-sm); color: rgba(255,255,255,0.5);
            font-size: 11px; font-weight: 500; transition: var(--transition); min-width: 60px;
        }
        .tab-item i { font-size: 20px; transition: var(--transition); }
        .tab-item:hover { color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.04); }
        .tab-item.active { color: var(--primary); }
        .tab-item.active i { color: var(--primary); text-shadow: 0 0 12px rgba(227,0,15,0.4); }
        .tab-item span { line-height: 1.2; }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 120px 0 60px; background: var(--bg-dark); position: relative; overflow: hidden;
            min-height: 260px; display: flex; align-items: center;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(227,0,15,0.15) 0%, transparent 60%);
        }
        .page-banner .container { position: relative; z-index: 1; }
        .page-banner h1 { font-size: 32px; color: var(--text-white); margin-bottom: 8px; }
        .page-banner .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.6); }
        .page-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .page-banner .breadcrumb a:hover { color: var(--text-white); }
        .page-banner .breadcrumb i { font-size: 12px; color: rgba(255,255,255,0.3); }
        .banner-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 12px; }
        .banner-meta .badge { background: rgba(227,0,15,0.85); }
        .banner-meta span { color: rgba(255,255,255,0.65); font-size: 14px; display: flex; align-items: center; gap: 6px; }

        /* ===== Article Content ===== */
        .article-section { padding: 60px 0 80px; }
        .article-wrapper {
            display: grid; grid-template-columns: 1fr 340px; gap: 48px; align-items: start;
        }
        .article-main {
            background: var(--bg-card); border-radius: var(--radius-lg); padding: 40px 44px;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-color);
        }
        .article-main .content-body {
            font-size: 16px; line-height: 1.85; color: var(--text-secondary);
        }
        .article-main .content-body p { margin-bottom: 20px; }
        .article-main .content-body h2, .article-main .content-body h3 { margin-top: 32px; margin-bottom: 14px; color: var(--text-primary); }
        .article-main .content-body h2 { font-size: 24px; }
        .article-main .content-body h3 { font-size: 20px; }
        .article-main .content-body ul, .article-main .content-body ol { margin-bottom: 20px; padding-left: 24px; }
        .article-main .content-body ul { list-style: disc; }
        .article-main .content-body ol { list-style: decimal; }
        .article-main .content-body li { margin-bottom: 6px; color: var(--text-secondary); }
        .article-main .content-body a { color: var(--primary); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
        .article-main .content-body a:hover { color: var(--primary-dark); }
        .article-main .content-body img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-sm); }
        .article-main .content-body blockquote {
            border-left: 4px solid var(--primary); padding: 16px 20px; margin: 24px 0;
            background: var(--bg-section-alt); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-style: italic;
            color: var(--text-secondary);
        }
        .article-main .content-body pre {
            background: var(--bg-dark); color: #e8e8e8; padding: 20px 24px; border-radius: var(--radius-md);
            overflow-x: auto; font-size: 14px; line-height: 1.6; margin: 24px 0;
        }
        .article-main .content-body code { font-family: 'Courier New', monospace; background: var(--bg-section-alt); padding: 2px 8px; border-radius: 4px; font-size: 14px; }

        .article-not-found {
            text-align: center; padding: 80px 20px;
        }
        .article-not-found i { font-size: 64px; color: var(--text-light); margin-bottom: 20px; }
        .article-not-found h2 { font-size: 28px; margin-bottom: 12px; }
        .article-not-found p { color: var(--text-secondary); margin-bottom: 24px; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex; flex-direction: column; gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card); border-radius: var(--radius-lg); padding: 28px;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-color);
        }
        .sidebar-card h3 { font-size: 18px; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); display: inline-block; }
        .sidebar-card ul li { padding: 10px 0; border-bottom: 1px solid var(--border-color); }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a { color: var(--text-secondary); font-size: 14px; display: flex; align-items: center; gap: 8px; transition: var(--transition); }
        .sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-card ul li a i { color: var(--primary); font-size: 12px; }
        .sidebar-cta {
            background: var(--bg-dark); border-color: rgba(255,255,255,0.08); color: var(--text-white);
        }
        .sidebar-cta h3 { color: var(--text-white); border-bottom-color: var(--primary); }
        .sidebar-cta p { color: rgba(255,255,255,0.7); font-size: 14px; margin-bottom: 16px; }
        .sidebar-cta .btn { width: 100%; }

        /* ===== Related Posts ===== */
        .related-section { padding: 0 0 80px; }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-md); padding: 20px 24px;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-color);
            transition: var(--transition); display: flex; flex-direction: column; gap: 8px;
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); }
        .related-card .badge { align-self: flex-start; }
        .related-card h4 { font-size: 16px; }
        .related-card h4 a { color: var(--text-primary); }
        .related-card h4 a:hover { color: var(--primary); }
        .related-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
        .related-card .meta { font-size: 13px; color: var(--text-light); display: flex; align-items: center; gap: 12px; margin-top: auto; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 80px;
            border-top: 1px solid rgba(255,255,255,0.04);
        }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 20px; margin-bottom: 14px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
        .footer-col h4 { font-size: 15px; font-weight: 700; color: var(--text-white); margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col a { display: block; padding: 6px 0; font-size: 14px; color: rgba(255,255,255,0.55); transition: var(--transition); }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-col a i { width: 20px; color: var(--primary); }
        .footer-bottom {
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            padding-top: 28px; border-top: 1px solid rgba(255,255,255,0.06); font-size: 13px; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary); }
        .footer-bottom span { display: flex; align-items: center; gap: 12px; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-wrapper { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .header-cta { display: none; }
            .mobile-tab-bar { display: flex; }
            .site-header { height: 64px; }
            body { padding-bottom: var(--tab-h); }
            .page-banner { padding: 96px 0 40px; min-height: 200px; }
            .page-banner h1 { font-size: 24px; }
            .article-main { padding: 24px 20px; }
            .article-main .content-body { font-size: 15px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .section { padding: 48px 0; }
            .article-section { padding: 40px 0 60px; }
            .related-section { padding: 0 0 60px; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 12px; }
            .logo { font-size: 18px; }
            .logo i { font-size: 20px; }
            .page-banner h1 { font-size: 20px; }
            .banner-meta { gap: 10px; font-size: 13px; }
            .article-main { padding: 16px 14px; }
            .article-main .content-body h2 { font-size: 20px; }
            .article-main .content-body h3 { font-size: 18px; }
            .sidebar-card { padding: 20px; }
            .container { padding: 0 12px; }
        }
        @media (min-width: 769px) {
            .mobile-tab-bar { display: none !important; }
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff2a2a;
            --secondary: #1a1a2e;
            --secondary-light: #16213e;
            --accent: #f5c518;
            --bg-dark: #0d0d0d;
            --bg-card: #1a1a1a;
            --bg-section: #111111;
            --bg-light: #f8f9fa;
            --text-primary: #ffffff;
            --text-secondary: #c0c0c0;
            --text-muted: #888888;
            --border-color: #2a2a2a;
            --border-light: #e0e0e0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 30px rgba(229, 9, 20, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --footer-top-pad: 60px;
        }

        /* ===== 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea {
            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: 1.2;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(13, 13, 13, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(13, 13, 13, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo span {
            color: var(--primary);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .desktop-nav a {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.2px;
        }
        .desktop-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .desktop-nav a.active {
            color: var(--text-primary);
            background: rgba(229, 9, 20, 0.15);
        }
        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .header-cta i {
            font-size: 14px;
        }

        /* Mobile bottom tab */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(13, 13, 13, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-color);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            justify-content: space-around;
            align-items: center;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
        }
        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 11px;
            color: var(--text-muted);
            transition: var(--transition);
            border-radius: var(--radius-sm);
            min-width: 60px;
        }
        .mobile-tab-bar a i {
            font-size: 20px;
            transition: var(--transition);
        }
        .mobile-tab-bar a:hover,
        .mobile-tab-bar a.active {
            color: var(--primary);
        }
        .mobile-tab-bar a.active i {
            color: var(--primary);
            text-shadow: 0 0 12px rgba(229, 9, 20, 0.4);
        }
        .mobile-tab-bar a span {
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .header-cta {
                display: none !important;
            }
            .mobile-tab-bar {
                display: flex !important;
            }
            .site-header {
                height: 60px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
            body {
                padding-bottom: 60px;
            }
        }
        @media (min-width: 769px) {
            .mobile-tab-bar {
                display: none !important;
            }
            body {
                padding-bottom: 0;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 100px 0 16px 0;
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-primary);
        }
        .breadcrumb i {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 60px 0 80px;
            background: var(--bg-section);
            overflow: hidden;
        }
        .page-banner .bg-overlay {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .page-banner .bg-gradient {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 13, 0.95) 30%, rgba(229, 9, 20, 0.2) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.15;
            letter-spacing: -0.5px;
        }
        .page-banner h1 i {
            color: var(--primary);
        }
        .page-banner p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }
        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .page-banner .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .page-banner .banner-tags span i {
            color: var(--accent);
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 40px 0 50px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner p {
                font-size: 15px;
            }
            .breadcrumb {
                padding: 80px 0 12px 0;
                font-size: 13px;
            }
        }
        @media (max-width: 480px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner .banner-tags span {
                font-size: 12px;
                padding: 4px 12px;
            }
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 70px 0;
        }
        .section.section-dark {
            background: var(--bg-section);
        }
        .section.section-card-bg {
            background: var(--bg-card);
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-title i {
            color: var(--primary);
        }
        .section-title .highlight {
            color: var(--primary);
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-sub {
                font-size: 14px;
                margin-bottom: 28px;
            }
        }
        @media (max-width: 480px) {
            .section-title {
                font-size: 22px;
            }
        }

        /* ===== Guide Cards ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .guide-card .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(229, 9, 20, 0.12);
            border-radius: var(--radius-sm);
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .guide-card:hover .card-icon {
            background: var(--primary);
            color: #fff;
        }
        .guide-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .guide-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-card .card-meta i {
            color: var(--accent);
        }
        .guide-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            margin-top: 8px;
            transition: var(--transition);
        }
        .guide-card .card-link:hover {
            gap: 10px;
            color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-card {
                padding: 24px 20px;
            }
            .guide-card h3 {
                font-size: 18px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .guide-grid {
                gap: 24px;
            }
        }

        /* ===== Safety Steps ===== */
        .safety-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .step-num {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            border-radius: 50%;
            margin: 0 auto 16px;
            transition: var(--transition);
        }
        .step-item:hover .step-num {
            transform: scale(1.1);
            box-shadow: 0 0 20px rgba(229, 9, 20, 0.4);
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .safety-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-item {
                padding: 20px 18px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .safety-steps {
                gap: 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(229, 9, 20, 0.3);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: transparent;
            transition: var(--transition);
            text-align: left;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 18px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px 24px;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 14px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px 18px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(229, 9, 20, 0.08) 0%, rgba(26, 26, 46, 0.6) 100%);
            border: 1px solid rgba(229, 9, 20, 0.2);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(229, 9, 20, 0.06) 0%, transparent 60%);
            z-index: 0;
        }
        .cta-box>* {
            position: relative;
            z-index: 1;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-box .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 700;
            transition: var(--transition);
        }
        .cta-box .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 14px;
            }
            .cta-box .cta-btn {
                padding: 14px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 480px) {
            .cta-box {
                padding: 32px 18px;
            }
            .cta-box h2 {
                font-size: 20px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 80px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 0 auto 20px;
        }
        .divider-left {
            margin: 0 0 20px 0;
        }

        /* ===== 额外辅助 ===== */
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 12px;
        }
        .gap-4 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 12px;
        }
        .mt-4 {
            margin-top: 16px;
        }
        .mt-6 {
            margin-top: 24px;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .mb-2 {
            margin-bottom: 8px;
        }
        .mb-3 {
            margin-bottom: 12px;
        }
        .mb-4 {
            margin-bottom: 16px;
        }
        .mb-6 {
            margin-bottom: 24px;
        }
        .mb-8 {
            margin-bottom: 32px;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-primary {
            color: var(--primary);
        }

        /* ===== 结构化数据隐藏 ===== */
        .schema-hidden {
            display: none;
        }

        /* ===== 图片卡片 ===== */
        .img-card-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            align-items: center;
        }
        .img-card-row .img-side img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 10;
        }
        .img-card-row .text-side h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .img-card-row .text-side p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .img-card-row .text-side .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .img-card-row .text-side .tag-list span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            background: rgba(229, 9, 20, 0.08);
            border: 1px solid rgba(229, 9, 20, 0.15);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .img-card-row .text-side .tag-list span i {
            color: var(--accent);
            font-size: 11px;
        }

        @media (max-width: 768px) {
            .img-card-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .img-card-row .text-side h3 {
                font-size: 22px;
            }
            .img-card-row .img-side img {
                aspect-ratio: 16 / 9;
            }
            .img-card-row.reverse-mobile .img-side {
                order: -1;
            }
        }
        @media (min-width: 769px) {
            .img-card-row .img-side {
                order: 1;
            }
            .img-card-row .text-side {
                order: 2;
            }
            .img-card-row.reverse .img-side {
                order: 2;
            }
            .img-card-row.reverse .text-side {
                order: 1;
            }
        }

        /* ===== 入口链接列表 ===== */
        .entry-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .entry-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            transition: var(--transition);
        }
        .entry-item:hover {
            border-color: var(--primary);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .entry-item .entry-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(229, 9, 20, 0.1);
            border-radius: var(--radius-sm);
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .entry-item .entry-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }
        .entry-item .entry-info span {
            font-size: 13px;
            color: var(--text-muted);
        }
        .entry-item .entry-status {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: #10b981;
            font-weight: 500;
            flex-shrink: 0;
        }
        .entry-item .entry-status i {
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .entry-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .entry-item {
                padding: 14px 16px;
            }
            .entry-item .entry-info h4 {
                font-size: 14px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .entry-list {
                gap: 16px;
            }
        }

        /* ===== Tab导航（分类页内） ===== */
        .cat-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 16px;
        }
        .cat-tabs a {
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cat-tabs a:hover {
            color: var(--text-primary);
            border-color: var(--primary);
            background: rgba(229, 9, 20, 0.08);
        }
        .cat-tabs a.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
        }