/* roulang page: index */
/* ===== CSS 设计变量 ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #132240;
            --primary-mid: #1c3050;
            --accent: #d4a843;
            --accent-light: #e8c36a;
            --accent-dark: #b8922e;
            --bg: #f4f6f9;
            --bg-card: #ffffff;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #f0f2f5;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s 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-text-size-adjust: 100%; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--primary); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.0rem; margin-bottom: 1rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 0.8rem; color: var(--text-light); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 50px; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p { font-size: 1.05rem; max-width: 600px; margin: 10px auto 0; color: var(--text-light); }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(212, 168, 67, 0.15);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(10, 22, 40, 0.99); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i { font-size: 1.4rem; color: var(--accent-light); }
        .logo:hover { color: var(--accent-light); }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav ul { display: flex; align-items: center; gap: 4px; }
        .main-nav ul li a {
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-white);
            transition: var(--transition);
            letter-spacing: 0.5px;
        }
        .main-nav ul li a:hover { background: rgba(212, 168, 67, 0.12); color: var(--accent-light); }
        .main-nav ul li a.active {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav ul li a.active:hover { background: var(--accent-light); color: var(--primary); }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            border-radius: 30px;
            padding: 0 16px;
            margin-left: 12px;
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .nav-search:focus-within { background: rgba(255,255,255,0.14); border-color: var(--accent); }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 8px 10px;
            color: var(--text-white);
            font-size: 0.85rem;
            width: 140px;
            transition: var(--transition);
        }
        .nav-search input::placeholder { color: rgba(255,255,255,0.4); }
        .nav-search input:focus { width: 180px; }
        .nav-search button { color: rgba(255,255,255,0.5); padding: 8px 4px; transition: var(--transition); }
        .nav-search button:hover { color: var(--accent); }
        .mobile-toggle {
            display: none;
            color: var(--text-white);
            font-size: 1.6rem;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .mobile-toggle:hover { color: var(--accent); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 120px 24px 80px;
            margin-top: 0;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,22,40,0.88) 0%, rgba(10,22,40,0.72) 50%, rgba(10,22,40,0.88) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212,168,67,0.08) 0%, transparent 60%);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; max-width: 820px; }
        .hero-badge {
            display: inline-block;
            background: rgba(212,168,67,0.18);
            border: 1px solid rgba(212,168,67,0.3);
            color: var(--accent-light);
            padding: 6px 22px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.6rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.7);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.0rem;
            transition: var(--transition);
            letter-spacing: 0.5px;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-primary:hover { background: var(--accent-light); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,168,67,0.35); }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.25);
        }
        .btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); background: rgba(212,168,67,0.08); }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2.2rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.55); margin-top: 4px; letter-spacing: 0.5px; }

        /* ===== 核心优势 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .icon { transform: scale(1.05); box-shadow: 0 0 30px rgba(212,168,67,0.15); }
        .feature-card h3 { margin-bottom: 12px; }
        .feature-card p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== 分类入口 ===== */
        .category-entry {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .category-entry::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212,168,67,0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
        .category-entry .container { position: relative; z-index: 2; }
        .category-entry .section-title h2 { color: var(--text-white); }
        .category-entry .section-title h2::after { background: var(--accent); }
        .category-entry .section-title p { color: rgba(255,255,255,0.6); }
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .category-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            gap: 24px;
            transition: var(--transition);
            cursor: pointer;
            color: var(--text-white);
        }
        .category-card:hover { background: rgba(255,255,255,0.12); border-color: var(--accent); transform: translateY(-4px); }
        .category-card .cat-icon {
            width: 56px;
            height: 56px;
            background: rgba(212,168,67,0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            flex-shrink: 0;
        }
        .category-card .cat-info h4 { font-size: 1.15rem; font-weight: 600; color: #fff; margin-bottom: 4px; }
        .category-card .cat-info p { font-size: 0.88rem; color: rgba(255,255,255,0.55); margin-bottom: 0; }
        .category-card .cat-arrow { margin-left: auto; color: rgba(255,255,255,0.2); font-size: 1.2rem; transition: var(--transition); }
        .category-card:hover .cat-arrow { color: var(--accent); transform: translateX(4px); }

        /* ===== 资讯列表 ===== */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .news-card .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--primary-light);
        }
        .news-card .news-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
        .news-card .news-cat {
            display: inline-block;
            background: rgba(212,168,67,0.12);
            color: var(--accent-dark);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .news-card h3 { font-size: 1.1rem; margin-bottom: 8px; line-height: 1.5; }
        .news-card h3 a { color: var(--primary); }
        .news-card h3 a:hover { color: var(--accent); }
        .news-card .news-excerpt { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; flex: 1; margin-bottom: 14px; }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .news-card .news-meta i { margin-right: 4px; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            color: var(--text-light);
            font-size: 1.05rem;
        }

        /* ===== 数据统计 ===== */
        .stats-section { background: var(--primary); position: relative; overflow: hidden; }
        .stats-section::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212,168,67,0.05) 0%, transparent 70%);
            border-radius: 50%;
        }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; z-index: 2; }
        .stat-item { text-align: center; padding: 30px 16px; }
        .stat-item .num { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stat-item .num i { font-size: 1.8rem; margin-right: 6px; opacity: 0.7; }
        .stat-item .label { font-size: 1.0rem; color: rgba(255,255,255,0.6); margin-top: 8px; font-weight: 500; }
        .stat-item .desc { font-size: 0.85rem; color: rgba(255,255,255,0.35); margin-top: 4px; }

        /* ===== 特色内容 ===== */
        .featured-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
        .featured-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
        .featured-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
        .featured-image:hover img { transform: scale(1.02); }
        .featured-text h2 { margin-bottom: 16px; }
        .featured-text p { font-size: 1.0rem; margin-bottom: 16px; }
        .featured-text ul { margin-top: 16px; }
        .featured-text ul li {
            padding: 10px 0;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border-light);
            color: var(--text);
        }
        .featured-text ul li i { color: var(--accent); font-size: 1.0rem; width: 20px; text-align: center; }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg); }
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.0rem;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            text-align: center;
            padding: 100px 24px;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,22,40,0.9) 0%, rgba(10,22,40,0.75) 100%);
        }
        .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { color: #fff; font-size: 2.4rem; margin-bottom: 16px; }
        .cta-content p { color: rgba(255,255,255,0.65); font-size: 1.1rem; margin-bottom: 32px; }
        .cta-content .btn { font-size: 1.05rem; padding: 16px 42px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.6);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.04);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 1.5rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.4); max-width: 300px; margin-top: 8px; }
        .footer-col h5 { color: #fff; font-size: 1.0rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.35); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.4);
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: var(--primary); transform: translateY(-2px); }

        /* ===== 面包屑 ===== */
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-light); padding: 16px 0; flex-wrap: wrap; }
        .breadcrumb a { color: var(--text-light); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb span { color: var(--text); }
        .breadcrumb i { font-size: 0.7rem; color: var(--text-light); }

        /* ===== 文章页专用 ===== */
        .article-wrapper { max-width: 860px; margin: 0 auto; }
        .article-header { margin-bottom: 32px; }
        .article-header h1 { font-size: 2.2rem; margin-bottom: 16px; line-height: 1.35; }
        .article-meta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 0.9rem; color: var(--text-light); }
        .article-meta i { margin-right: 4px; }
        .article-body { font-size: 1.05rem; line-height: 1.9; color: var(--text); }
        .article-body p { margin-bottom: 1.2rem; color: var(--text); }
        .article-body img { border-radius: var(--radius-md); margin: 24px 0; width: 100%; }
        .article-body h2, .article-body h3 { margin-top: 36px; margin-bottom: 16px; }
        .article-nav { display: flex; justify-content: space-between; margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 16px; }
        .article-nav a { color: var(--primary); font-weight: 500; }
        .article-nav a:hover { color: var(--accent); }

        /* ===== 分类页专用 ===== */
        .category-hero {
            padding: 140px 24px 80px;
            text-align: center;
            background: var(--primary) url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            position: relative;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,22,40,0.85) 0%, rgba(10,22,40,0.7) 100%);
        }
        .category-hero .container { position: relative; z-index: 2; }
        .category-hero h1 { color: #fff; font-size: 2.6rem; margin-bottom: 16px; }
        .category-hero p { color: rgba(255,255,255,0.65); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }
        .category-hero .cat-tag {
            display: inline-block;
            background: rgba(212,168,67,0.15);
            color: var(--accent-light);
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .hero h1 { font-size: 2.8rem; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 64px; }
            .main-nav ul { display: none; }
            .nav-search { display: none; }
            .mobile-toggle { display: block; }
            .main-nav.open ul {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(10,22,40,0.98);
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid rgba(212,168,67,0.15);
            }
            .main-nav.open ul li a { display: block; padding: 12px 20px; }
            .main-nav.open .nav-search {
                display: flex;
                margin: 12px 20px 4px;
                width: auto;
            }
            .main-nav.open .nav-search input { width: 100%; }
            .hero { min-height: 70vh; padding: 100px 20px 60px; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1.0rem; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-item .num { font-size: 2.0rem; }
            .featured-grid { grid-template-columns: 1fr; gap: 24px; }
            .featured-image img { height: 260px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-header h1 { font-size: 1.6rem; }
            .category-hero h1 { font-size: 2.0rem; }
            .cta-content h2 { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.8rem; }
            .hero-badge { font-size: 0.75rem; padding: 4px 16px; }
            .btn { padding: 12px 24px; font-size: 0.9rem; }
            .section-title h2 { font-size: 1.4rem; }
            .news-card .news-img { height: 160px; }
            .stat-item .num { font-size: 1.6rem; }
            .stat-item .label { font-size: 0.85rem; }
            .faq-question { font-size: 0.9rem; padding: 16px 18px; }
            .article-meta { font-size: 0.8rem; gap: 12px; }
            .category-hero h1 { font-size: 1.6rem; }
        }

        /* ===== 辅助 ===== */
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* roulang page: article */
/* ===== Design Variables ===== */
    :root {
        --primary: #e63946;
        --primary-dark: #c1121f;
        --primary-light: #ff6b6b;
        --secondary: #1d3557;
        --secondary-light: #457b9d;
        --accent: #f4a261;
        --bg-body: #f8f9fa;
        --bg-white: #ffffff;
        --bg-dark: #1a1a2e;
        --bg-card: #ffffff;
        --text-primary: #1a1a2e;
        --text-secondary: #4a4a6a;
        --text-muted: #8a8aaa;
        --text-light: #f8f9fa;
        --border-color: #e8e8f0;
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
        --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
        --shadow-hover: 0 16px 48px rgba(230,57,70,0.14);
        --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
        --container-max: 1200px;
        --header-height: 72px;
        --spacing-section: 80px;
    }

    /* ===== 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-top: var(--header-height);
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul,ol { list-style: none; }
    button,input,textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
    .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
        background: rgba(255,255,255,0.95); backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-color);
        height: var(--header-height);
        transition: var(--transition);
    }
    .site-header.scrolled { box-shadow: var(--shadow-md); }
    .header-inner {
        display: flex; align-items: center; justify-content: space-between;
        height: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
    }
    .logo {
        display: flex; align-items: center; gap: 10px;
        font-size: 1.6rem; font-weight: 800; color: var(--primary);
        letter-spacing: -0.5px;
    }
    .logo i { font-size: 1.4rem; color: var(--primary); }
    .logo span { color: var(--secondary); }
    .main-nav { display: flex; align-items: center; gap: 32px; }
    .main-nav ul { display: flex; align-items: center; gap: 8px; }
    .main-nav ul li a {
        display: block; padding: 8px 18px; border-radius: var(--radius-sm);
        font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
        transition: var(--transition); position: relative;
    }
    .main-nav ul li a:hover,
    .main-nav ul li a.active { color: var(--primary); background: rgba(230,57,70,0.06); }
    .main-nav ul li a.active { font-weight: 600; }
    .nav-search {
        display: flex; align-items: center; gap: 6px;
        background: var(--bg-body); border-radius: var(--radius-lg);
        padding: 4px 4px 4px 16px; border: 1px solid var(--border-color);
        transition: var(--transition); max-width: 220px;
    }
    .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(230,57,70,0.12); }
    .nav-search input {
        background: transparent; border: none; padding: 6px 0;
        font-size: 0.9rem; color: var(--text-primary); width: 120px;
    }
    .nav-search input::placeholder { color: var(--text-muted); }
    .nav-search button {
        background: var(--primary); color: #fff; width: 34px; height: 34px;
        border-radius: 50%; display: flex; align-items: center; justify-content: center;
        cursor: pointer; transition: var(--transition); font-size: 0.85rem;
    }
    .nav-search button:hover { background: var(--primary-dark); transform: scale(1.05); }
    .menu-toggle { display: none; background: none; font-size: 1.5rem; color: var(--text-primary); cursor: pointer; padding: 4px; }

    /* ===== Page Hero (Article Banner) ===== */
    .page-hero {
        position: relative; padding: 60px 0 40px;
        background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
        min-height: 200px; display: flex; align-items: center;
        overflow: hidden;
    }
    .page-hero::before {
        content: ''; position: absolute; inset: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        opacity: 0.15; mix-blend-mode: overlay;
    }
    .page-hero .container { position: relative; z-index: 2; width: 100%; }
    .page-hero h1 {
        font-size: 2.2rem; font-weight: 800; color: #fff;
        line-height: 1.3; max-width: 800px; margin-bottom: 12px;
    }
    .page-hero .meta {
        display: flex; flex-wrap: wrap; gap: 16px 28px;
        color: rgba(255,255,255,0.75); font-size: 0.9rem;
    }
    .page-hero .meta i { margin-right: 6px; }
    .page-hero .meta .category {
        display: inline-block; background: var(--primary); color: #fff;
        padding: 2px 14px; border-radius: var(--radius-lg); font-size: 0.8rem;
        font-weight: 600; letter-spacing: 0.3px;
    }
    .breadcrumb {
        display: flex; flex-wrap: wrap; gap: 6px 12px;
        font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 16px;
    }
    .breadcrumb a { color: rgba(255,255,255,0.7); }
    .breadcrumb a:hover { color: var(--primary-light); }
    .breadcrumb .sep { color: rgba(255,255,255,0.35); }

    /* ===== Article Main ===== */
    .article-main { padding: var(--spacing-section) 0; }
    .article-layout {
        display: grid; grid-template-columns: 1fr 320px; gap: 48px;
        align-items: start;
    }
    .article-content { background: var(--bg-white); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 40px; }
    .article-body { font-size: 1.05rem; line-height: 1.9; color: var(--text-secondary); }
    .article-body p { margin-bottom: 1.2em; }
    .article-body h2,.article-body h3 { color: var(--text-primary); margin-top: 1.6em; margin-bottom: 0.6em; font-weight: 700; }
    .article-body h2 { font-size: 1.5rem; }
    .article-body h3 { font-size: 1.2rem; }
    .article-body ul,.article-body ol { margin-bottom: 1.2em; padding-left: 1.5em; }
    .article-body ul li { list-style: disc; margin-bottom: 0.4em; }
    .article-body ol li { list-style: decimal; margin-bottom: 0.4em; }
    .article-body img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-sm); }
    .article-body blockquote {
        border-left: 4px solid var(--primary); background: rgba(230,57,70,0.04);
        padding: 12px 20px; margin: 1.2em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary); font-style: italic;
    }
    .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
    .article-body a:hover { color: var(--primary-dark); }

    /* ===== Sidebar ===== */
    .article-sidebar { display: flex; flex-direction: column; gap: 32px; }
    .sidebar-card {
        background: var(--bg-white); border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm); padding: 28px; border: 1px solid var(--border-color);
    }
    .sidebar-card h4 {
        font-size: 1.1rem; font-weight: 700; color: var(--text-primary);
        margin-bottom: 18px; padding-bottom: 12px;
        border-bottom: 2px solid var(--primary); display: inline-block;
    }
    .sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border-color); }
    .sidebar-list li:last-child { border-bottom: none; }
    .sidebar-list li a { display: block; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.4; }
    .sidebar-list li a:hover { color: var(--primary); padding-left: 6px; }
    .sidebar-list li .date { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }
    .sidebar-cta {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff; text-align: center; padding: 32px 24px; border: none;
    }
    .sidebar-cta h4 { color: #fff; border-bottom-color: rgba(255,255,255,0.3); margin-bottom: 12px; }
    .sidebar-cta p { font-size: 0.9rem; opacity: 0.9; margin-bottom: 18px; }
    .sidebar-cta .btn { background: #fff; color: var(--primary); }
    .sidebar-cta .btn:hover { background: rgba(255,255,255,0.9); transform: translateY(-2px); }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex; align-items: center; gap: 8px;
        padding: 10px 28px; border-radius: var(--radius-lg); font-weight: 600;
        font-size: 0.95rem; cursor: pointer; transition: var(--transition);
        border: none; text-decoration: none;
    }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
    .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
    .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

    /* ===== Related Section ===== */
    .related-section { background: var(--bg-white); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 40px; margin-top: 48px; }
    .related-section h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 24px; color: var(--text-primary); display: flex; align-items: center; gap: 10px; }
    .related-section h3::after { content: ''; flex: 1; height: 1px; background: var(--border-color); }
    .related-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
    .related-card {
        background: var(--bg-body); border-radius: var(--radius-sm); padding: 20px;
        transition: var(--transition); border: 1px solid transparent;
    }
    .related-card:hover { border-color: var(--border-color); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
    .related-card .cat-tag {
        display: inline-block; background: var(--secondary); color: #fff;
        padding: 2px 12px; border-radius: var(--radius-lg); font-size: 0.75rem;
        font-weight: 600; margin-bottom: 8px;
    }
    .related-card h4 { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; line-height: 1.4; }
    .related-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark); color: rgba(255,255,255,0.8); padding: 60px 0 0;
    }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; }
    .footer-brand .logo { color: #fff; margin-bottom: 16px; }
    .footer-brand .logo i { color: var(--primary-light); }
    .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); }
    .footer-col h5 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: var(--transition); }
    .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
    .footer-col ul li i { color: var(--primary-light); margin-right: 8px; }
    .footer-bottom {
        margin-top: 40px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.08);
        display: flex; justify-content: space-between; align-items: center;
        font-size: 0.85rem; color: rgba(255,255,255,0.45);
    }
    .footer-bottom a { color: rgba(255,255,255,0.6); }
    .footer-bottom a:hover { color: var(--primary-light); }
    .footer-social { display: flex; gap: 12px; }
    .footer-social a {
        display: flex; align-items: center; justify-content: center;
        width: 38px; height: 38px; border-radius: 50%;
        background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.6);
        transition: var(--transition); font-size: 1.1rem;
    }
    .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

    /* ===== 404 State ===== */
    .not-found-box {
        text-align: center; padding: 80px 20px; background: var(--bg-white);
        border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
    }
    .not-found-box i { font-size: 3.5rem; color: var(--text-muted); margin-bottom: 16px; }
    .not-found-box h2 { font-size: 1.6rem; color: var(--text-primary); margin-bottom: 8px; }
    .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .article-layout { grid-template-columns: 1fr; }
        .related-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
        :root { --spacing-section: 48px; --header-height: 64px; }
        .header-inner { padding: 0 16px; }
        .main-nav ul { display: none; }
        .main-nav ul.open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); padding: 16px 24px; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-md); gap: 4px; }
        .main-nav ul.open li a { padding: 12px 16px; }
        .menu-toggle { display: block; }
        .nav-search { max-width: 160px; }
        .nav-search input { width: 80px; }
        .page-hero h1 { font-size: 1.5rem; }
        .page-hero { padding: 40px 0 28px; min-height: 160px; }
        .article-content { padding: 20px; }
        .article-body { font-size: 1rem; }
        .related-grid { grid-template-columns: 1fr; }
        .related-section { padding: 24px; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
        .sidebar-card { padding: 20px; }
    }
    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .page-hero h1 { font-size: 1.25rem; }
        .page-hero .meta { font-size: 0.8rem; gap: 8px 16px; }
        .article-content { padding: 16px; border-radius: var(--radius-sm); }
        .footer-grid { grid-template-columns: 1fr; gap: 20px; }
        .nav-search { max-width: 120px; }
        .nav-search input { width: 60px; }
        .logo { font-size: 1.3rem; }
    }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b2070f;
            --primary-light: #ff2a2a;
            --secondary: #0d0d0d;
            --accent: #ffd700;
            --accent-light: #ffe44d;
            --bg-body: #0a0a0a;
            --bg-card: #1a1a1a;
            --bg-card-hover: #222222;
            --bg-section: #111111;
            --bg-dark: #080808;
            --text-primary: #f5f5f5;
            --text-secondary: #b0b0b0;
            --text-muted: #707070;
            --border-color: #2a2a2a;
            --border-light: #333333;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.5);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.7);
            --shadow-glow: 0 0 30px rgba(229,9,20,0.25);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --spacer-sm: 1.5rem;
            --spacer-md: 3rem;
            --spacer-lg: 5rem;
            --spacer-xl: 7rem;
            --max-width: 1200px;
            --header-height: 68px;
        }

        /* ===== 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: 1.65;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text-primary); font-weight: 700; }
        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: 1.15rem; }
        h5 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); }
        p { margin-bottom: 0.75rem; color: var(--text-secondary); }
        strong { color: var(--text-primary); }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* ===== Header / Nav (吸顶) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 10, 10, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.6); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.25rem;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo:hover { color: var(--primary); }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex: 1;
            justify-content: center;
        }
        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .main-nav ul li a {
            display: block;
            padding: 0.5rem 1rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .main-nav ul li a:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
        .main-nav ul li a.active {
            color: var(--primary);
            background: rgba(229,9,20,0.1);
        }
        .main-nav ul li a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            transition: all var(--transition);
            flex-shrink: 0;
            max-width: 220px;
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: var(--shadow-glow); }
        .nav-search input {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 0.85rem;
            width: 100%;
            outline: none;
            padding: 0.3rem 0;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 0.85rem;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .nav-search button:hover { background: var(--primary-dark); transform: scale(1.05); }

        /* 移动端汉堡 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
            background: none;
            border: none;
            flex-shrink: 0;
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .menu-toggle.open span:nth-child(2) { opacity: 0; }
        .menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero / Banner (分类页) ===== */
        .category-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: var(--spacer-lg) 1.25rem;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,10,10,0.88) 0%, rgba(0,0,0,0.7) 100%);
            z-index: 1;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(229,9,20,0.15) 0%, transparent 70%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(229,9,20,0.2);
            border: 1px solid rgba(229,9,20,0.3);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 1.25rem;
            backdrop-filter: blur(4px);
        }
        .category-hero .hero-badge i { font-size: 0.75rem; }
        .category-hero h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 900;
            margin-bottom: 0.75rem;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin: 0 auto 1.5rem;
        }
        .category-hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-top: 1.5rem;
        }
        .category-hero .hero-stats .stat-item {
            text-align: center;
        }
        .category-hero .hero-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .category-hero .hero-stats .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacer-lg) 0;
        }
        .section-dark { background: var(--bg-section); }
        .section-darker { background: var(--bg-dark); }
        .section-title {
            text-align: center;
            margin-bottom: var(--spacer-md);
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 0.75rem auto 0;
        }
        .section-title p {
            max-width: 600px;
            margin: 0.75rem auto 0;
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        /* ===== 卡片组件 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            transition: transform 0.4s ease;
        }
        .card:hover .card-img { transform: scale(1.03); }
        .card .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .card .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: rgba(229,9,20,0.12);
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-bottom: 0.6rem;
        }
        .card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
            line-height: 1.35;
        }
        .card .card-title a { color: inherit; }
        .card .card-title a:hover { color: var(--primary); }
        .card .card-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0.75rem;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card .card-meta i { margin-right: 0.25rem; }

        /* ===== 特色图文板块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .feature-block.reverse { direction: rtl; }
        .feature-block.reverse > * { direction: ltr; }
        .feature-block .feature-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-block .feature-img img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }
        .feature-block .feature-img:hover img { transform: scale(1.04); }
        .feature-block .feature-content h3 {
            font-size: clamp(1.4rem, 3vw, 2rem);
            margin-bottom: 0.75rem;
        }
        .feature-block .feature-content p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .feature-block .feature-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            margin: 1.25rem 0;
        }
        .feature-block .feature-list li {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .feature-block .feature-list li i {
            color: var(--primary);
            font-size: 0.85rem;
            width: 20px;
            text-align: center;
        }

        /* ===== 标签 / 徽章 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag {
            display: inline-block;
            padding: 0.3rem 0.9rem;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            transition: all var(--transition);
        }
        .tag:hover { color: var(--primary); border-color: var(--primary); background: rgba(229,9,20,0.08); }
        .tag-hot {
            background: rgba(229,9,20,0.15);
            border-color: rgba(229,9,20,0.3);
            color: var(--primary);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.2rem 0.65rem;
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-radius: 4px;
        }
        .badge-red { background: var(--primary); color: #fff; }
        .badge-gold { background: var(--accent); color: #000; }
        .badge-outline { background: transparent; border: 1px solid var(--border-light); color: var(--text-muted); }

        /* ===== 统计数字块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            text-align: center;
        }
        .stat-block {
            padding: 2rem 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-block:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); transform: translateY(-2px); }
        .stat-block .stat-icon { font-size: 2rem; color: var(--primary); margin-bottom: 0.75rem; }
        .stat-block .stat-number { font-size: 2.2rem; font-weight: 900; color: var(--text-primary); }
        .stat-block .stat-label { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.25rem; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-item summary {
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item[open] summary { color: var(--primary); }
        .faq-item .faq-body {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
        }

        /* ===== CTA ===== */
        .cta-block {
            text-align: center;
            padding: var(--spacer-lg) 1.25rem;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-radius: var(--radius-xl);
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,10,10,0.9), rgba(0,0,0,0.75));
            z-index: 1;
            border-radius: var(--radius-xl);
        }
        .cta-block > * { position: relative; z-index: 2; }
        .cta-block h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 0.5rem; }
        .cta-block p { max-width: 560px; margin: 0 auto 1.5rem; color: var(--text-secondary); }
        .btn-group { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(229,9,20,0.35);
        }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(229,9,20,0.45); }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-light);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.06); border-color: var(--text-muted); color: var(--text-primary); transform: translateY(-2px); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 0.45rem 1.1rem; font-size: 0.82rem; }
        .btn-lg { padding: 0.9rem 2.2rem; font-size: 1.05rem; }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 0.4rem;
            margin-top: var(--spacer-md);
        }
        .pagination a, .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 0.6rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .pagination a:hover { color: var(--primary); border-color: var(--primary); background: rgba(229,9,20,0.08); }
        .pagination .active { color: #fff; background: var(--primary); border-color: var(--primary); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: var(--spacer-md) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 2rem;
            padding-bottom: var(--spacer-md);
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo { font-size: 1.25rem; margin-bottom: 0.75rem; display: inline-flex; }
        .footer-brand p { font-size: 0.88rem; color: var(--text-muted); max-width: 320px; }
        .footer-col h5 {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .footer-col ul li a:hover { color: var(--primary); padding-left: 3px; }
        .footer-col ul li i { color: var(--text-muted); margin-right: 0.4rem; width: 18px; text-align: center; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.25rem 0;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .footer-bottom span { font-size: 0.82rem; color: var(--text-muted); }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }
        .footer-social { display: flex; gap: 0.75rem; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-card);
            color: var(--text-secondary);
            font-size: 1rem;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== 分隔线 ===== */
        .divider {
            width: 100%;
            height: 1px;
            background: var(--border-color);
            margin: var(--spacer-md) 0;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 1rem 0;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text-secondary); }
        .breadcrumb .sep { color: var(--text-muted); font-size: 0.7rem; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
            .feature-block { grid-template-columns: 1fr; gap: 2rem; }
            .feature-block.reverse { direction: ltr; }
        }

        @media (max-width: 768px) {
            :root { --header-height: 60px; --spacer-lg: 3rem; --spacer-md: 2rem; }
            .menu-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10,10,10,0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 1.25rem;
                gap: 1rem;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav ul { flex-direction: column; width: 100%; gap: 0.15rem; }
            .main-nav ul li a { width: 100%; text-align: center; padding: 0.7rem 1rem; }
            .main-nav ul li a.active::after { display: none; }
            .nav-search { width: 100%; max-width: 100%; }
            .category-hero { min-height: 280px; padding: var(--spacer-md) 1rem; }
            .category-hero .hero-stats { gap: 1.25rem; }
            .card-grid { grid-template-columns: 1fr; }
            .card-grid-2 { grid-template-columns: 1fr; }
            .card-grid-4 { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 2fr 2fr; gap: 1rem; }
            .stat-block { padding: 1.25rem 0.75rem; }
            .stat-block .stat-number { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.25rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .btn-group { flex-direction: column; align-items: center; }
            .cta-block { padding: var(--spacer-md) 1rem; }
            .pagination { flex-wrap: wrap; }
        }

        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
            .category-hero .hero-stats { flex-direction: column; gap: 0.75rem; }
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.2rem; }
            .section-title h2 { font-size: 1.4rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== 骨架屏过渡 ===== */
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }