/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b4d;
            --primary-light: #1a2d6e;
            --primary-dark: #0a1238;
            --secondary: #d4a530;
            --secondary-light: #e8c04a;
            --secondary-dark: #b8891e;
            --bg: #ffffff;
            --bg-alt: #f0f3f9;
            --bg-dark: #0f1b4d;
            --text: #1a1a2e;
            --text-light: #5a6278;
            --text-white: #ffffff;
            --border: #e2e6ee;
            --radius: 10px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow: 0 4px 16px rgba(15, 27, 77, 0.08);
            --shadow-lg: 0 12px 48px rgba(15, 27, 77, 0.12);
            --shadow-glow: 0 8px 32px rgba(212, 165, 48, 0.25);
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font);
            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: color var(--transition); }
        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 { line-height: 1.3; font-weight: 700; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding { padding: 80px 0; }
        .section-padding-sm { padding: 56px 0; }
        .text-center { text-align: center; }
        .text-light { color: var(--text-light); }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 2px 20px rgba(15,27,77,0.08); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
        }
        .site-logo i { color: var(--secondary); margin-right: 8px; font-size: 1.3rem; }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a i { font-size: 0.85rem; color: var(--text-light); transition: color var(--transition); }
        .main-nav a:hover { background: var(--bg-alt); color: var(--primary); }
        .main-nav a:hover i { color: var(--secondary); }
        .main-nav a.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .main-nav a.active i { color: var(--secondary-light); }
        .nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)) !important;
            color: var(--primary-dark) !important;
            font-weight: 700 !important;
            padding: 8px 22px !important;
            border-radius: 30px !important;
            box-shadow: var(--shadow-glow);
        }
        .nav-cta i { color: var(--primary-dark) !important; }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(212,165,48,0.35) !important; }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .menu-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
        .menu-toggle.open span:nth-child(2) { opacity: 0; }
        .menu-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: calc(var(--nav-height) + 40px) 24px 80px;
            background: linear-gradient(135deg, rgba(15,27,77,0.92), rgba(26,45,110,0.88)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: var(--text-white);
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: var(--max-width);
            margin: 0 auto;
            width: 100%;
            position: relative;
            z-index: 2;
        }
        .hero-content { max-width: 600px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212,165,48,0.2);
            border: 1px solid rgba(212,165,48,0.3);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--secondary-light);
            margin-bottom: 20px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 6px;
            font-weight: 400;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.7);
            margin: 20px 0 32px;
            max-width: 500px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
            box-shadow: var(--shadow-glow);
        }
        .hero-actions .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(212,165,48,0.4); }
        .hero-actions .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.3);
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }
        .hero-actions .btn-outline:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(212,165,48,0.1); }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            max-height: 480px;
            width: 100%;
            object-fit: cover;
            transform: perspective(800px) rotateY(-4deg);
            transition: transform 0.6s ease;
        }
        .hero-visual img:hover { transform: perspective(800px) rotateY(0deg) scale(1.01); }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
            max-width: var(--max-width);
            width: 100%;
            position: relative;
            z-index: 2;
        }
        .hero-stat {
            text-align: center;
            padding: 20px 16px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius);
            backdrop-filter: blur(8px);
        }
        .hero-stat .num { font-size: 2.2rem; font-weight: 900; color: var(--secondary); }
        .hero-stat .label { font-size: 0.9rem; color: rgba(255,255,255,0.65); margin-top: 4px; }

        /* ===== 通用板块标题 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .section-title .badge-line {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--secondary-dark);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }
        .section-title .badge-line::before,
        .section-title .badge-line::after {
            content: '';
            width: 32px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }

        /* ===== 关于板块 ===== */
        .about-block {
            background: var(--bg-alt);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .about-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 400px;
            object-fit: cover;
        }
        .about-text h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .about-text p {
            color: var(--text-light);
            font-size: 1.02rem;
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .about-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text);
            padding: 8px 0;
        }
        .about-features li i { color: var(--secondary); font-size: 0.9rem; }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .category-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-img { transform: scale(1.05); }
        .category-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { font-size: 1.2rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .category-card .card-body p { font-size: 0.92rem; color: var(--text-light); line-height: 1.7; flex: 1; }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-weight: 600;
            color: var(--secondary-dark);
            font-size: 0.9rem;
            transition: gap var(--transition);
        }
        .category-card .card-link i { font-size: 0.8rem; transition: transform var(--transition); }
        .category-card:hover .card-link i { transform: translateX(4px); }
        .category-card .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: var(--text-white);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== 数据统计 ===== */
        .stats-block {
            background: var(--primary);
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .stats-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(212,165,48,0.08), transparent 70%);
            pointer-events: none;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .stat-item { text-align: center; padding: 24px 16px; }
        .stat-item .num { font-size: 2.8rem; font-weight: 900; color: var(--secondary); }
        .stat-item .label { font-size: 1rem; color: rgba(255,255,255,0.7); margin-top: 8px; }

        /* ===== 最新资讯 (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .news-card a { display: block; padding: 24px; }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
            font-size: 0.82rem;
        }
        .news-category {
            background: rgba(212,165,48,0.12);
            color: var(--secondary-dark);
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 600;
        }
        .news-date { color: var(--text-light); }
        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-light);
            font-size: 1rem;
            background: var(--bg-alt);
            border-radius: var(--radius);
        }

        /* ===== 核心优势 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 28px;
        }
        .advantage-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .advantage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .advantage-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .advantage-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .advantage-card p { font-size: 0.9rem; color: var(--text-light); line-height: 1.7; }

        /* ===== FAQ ===== */
        .faq-block { background: var(--bg-alt); }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--secondary); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover { background: var(--bg-alt); }
        .faq-question i { color: var(--secondary); font-size: 0.85rem; transition: transform var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            color: var(--text-white);
            text-align: center;
            padding: 80px 24px;
        }
        .cta-block h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
        .cta-block p { font-size: 1.05rem; color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 32px; }
        .cta-block .btn-cta {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 16px 44px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition);
            box-shadow: var(--shadow-glow);
        }
        .cta-block .btn-cta:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 20px 48px rgba(212,165,48,0.35); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0a1238;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 12px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--secondary); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
            .hero-content { max-width: 100%; }
            .hero-desc { margin-left: auto; margin-right: auto; }
            .hero-actions { justify-content: center; }
            .hero-visual img { max-height: 340px; transform: none; }
            .hero-visual img:hover { transform: scale(1.02); }
            .hero h1 { font-size: 2.6rem; }
            .hero-stats { gap: 16px; }
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .about-image img { height: 280px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                pointer-events: none;
                box-shadow: 0 20px 40px rgba(0,0,0,0.06);
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .main-nav a { width: 100%; padding: 12px 18px; border-radius: var(--radius); }
            .main-nav a.nav-cta { margin-top: 8px; text-align: center; justify-content: center; }
            .menu-toggle { display: flex; }
            .hero { min-height: 80vh; padding-top: calc(var(--nav-height) + 24px); }
            .hero h1 { font-size: 2rem; }
            .hero-sub { font-size: 1rem; }
            .hero-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
            .hero-stat { padding: 16px; }
            .hero-stat .num { font-size: 1.6rem; }
            .section-title h2 { font-size: 1.6rem; }
            .section-padding { padding: 48px 0; }
            .news-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .advantages-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item .num { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .site-logo { font-size: 1.2rem; }
            .hero { padding-left: 16px; padding-right: 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline { width: 100%; justify-content: center; }
            .hero-stats { grid-template-columns: 1fr 1fr; }
            .about-features { grid-template-columns: 1fr; }
            .cta-block h2 { font-size: 1.5rem; }
            .cta-block .btn-cta { width: 100%; justify-content: center; }
            .faq-question { font-size: 0.92rem; padding: 14px 16px; }
        }

/* roulang page: article */
:root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1a47;
            --accent: #c9a84c;
            --accent-light: #e0c87a;
            --accent-dark: #a88a2e;
            --bg-body: #f7f8fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a47;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-light: #7a7a9e;
            --text-white: #f0f2ff;
            --border: #e2e4f0;
            --border-light: #f0f1f8;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(26, 42, 108, 0.08);
            --shadow-hover: 0 12px 40px rgba(26, 42, 108, 0.15);
            --shadow-card: 0 2px 16px rgba(26, 42, 108, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        *,
        *::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);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--header-height);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 32px rgba(26, 42, 108, 0.1);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark) !important;
            letter-spacing: -0.5px;
        }
        .site-logo i {
            font-size: 28px;
            color: var(--accent);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 40px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a i {
            margin-right: 6px;
            font-size: 14px;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.06);
        }
        .main-nav a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(26, 42, 108, 0.25);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--text-white);
            padding: 8px 22px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.35);
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201, 168, 76, 0.45);
            color: var(--text-white);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
        }
        .hamburger span {
            width: 28px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: all var(--transition);
        }

        /* ===== Hero Banner ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            color: var(--text-white);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 80px;
            background: var(--bg-body);
            clip-path: ellipse(55% 100% at 50% 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-hero .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .article-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .article-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .article-hero .breadcrumb .current {
            color: var(--accent-light);
        }
        .article-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-white);
            max-width: 900px;
            margin: 0 auto 16px;
            line-height: 1.3;
            letter-spacing: -0.5px;
        }
        .article-hero .meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
        }
        .article-hero .meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero .meta i {
            color: var(--accent);
        }
        .article-hero .meta .category-tag {
            background: rgba(201, 168, 76, 0.2);
            color: var(--accent-light);
            padding: 2px 14px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 13px;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 48px 48px 56px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .article-body .featured-image {
            width: 100%;
            border-radius: var(--radius-sm);
            margin-bottom: 32px;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .content {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 20px;
        }
        .article-body .content h2 {
            font-size: 26px;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .article-body .content h3 {
            font-size: 21px;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body .content li {
            margin-bottom: 8px;
            list-style: disc;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(201, 168, 76, 0.06);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-body);
            font-style: italic;
        }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
        }
        .article-body .content a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
        }
        .article-body .content a:hover {
            border-bottom-color: var(--accent);
            color: var(--accent-dark);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
        }
        .article-not-found i {
            font-size: 64px;
            color: var(--border);
            margin-bottom: 24px;
        }
        .article-not-found h2 {
            font-size: 28px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 40px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 42, 108, 0.25);
            color: var(--text-white);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .sidebar-widget h3 {
            font-size: 18px;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget h3 i {
            color: var(--accent);
        }
        .sidebar-widget .list-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .sidebar-widget .list-item:last-child {
            border-bottom: none;
        }
        .sidebar-widget .list-item .thumb {
            width: 72px;
            height: 54px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border);
        }
        .sidebar-widget .list-item .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-widget .list-item .info .title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .sidebar-widget .list-item .info .title:hover {
            color: var(--primary);
        }
        .sidebar-widget .list-item .info .date {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-widget .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-widget .tag-cloud a {
            padding: 4px 14px;
            border-radius: 40px;
            background: rgba(26, 42, 108, 0.06);
            color: var(--text-body);
            font-size: 13px;
            transition: all var(--transition);
        }
        .sidebar-widget .tag-cloud a:hover {
            background: var(--primary);
            color: var(--text-white);
        }
        .sidebar-widget .cta-box {
            text-align: center;
            padding: 20px 0 8px;
        }
        .sidebar-widget .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--text-white);
            border-radius: 40px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .sidebar-widget .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(201, 168, 76, 0.4);
            color: var(--text-white);
        }

        /* ===== Related / CTA ===== */
        .related-section {
            padding: 0 0 60px;
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 {
            font-size: 30px;
            color: var(--text-dark);
        }
        .related-section .section-title p {
            color: var(--text-light);
            margin-top: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 20px 24px;
        }
        .related-card .card-body .cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .related-card .card-body h3 {
            font-size: 17px;
            margin: 6px 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a {
            color: var(--text-dark);
        }
        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-body .meta-sm {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            gap: 16px;
        }
        .related-card .card-body .meta-sm i {
            margin-right: 4px;
        }

        .article-cta {
            padding: 60px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .article-cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }
        .article-cta h2 {
            font-size: 32px;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .article-cta p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-cta .btn-primary {
            padding: 14px 36px;
            background: var(--accent);
            color: var(--text-dark);
            border-radius: 40px;
            font-weight: 700;
            font-size: 16px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .article-cta .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(201, 168, 76, 0.35);
            color: var(--text-dark);
        }
        .article-cta .btn-outline {
            padding: 14px 36px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: var(--text-white);
            border-radius: 40px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .article-cta .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .site-logo {
            font-size: 20px;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            color: var(--text-white);
            font-size: 16px;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            padding: 6px 0;
            transition: all var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .site-footer .footer-col a i {
            margin-right: 8px;
            width: 16px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }
            :root {
                --header-height: 64px;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 2px solid var(--border);
                z-index: 999;
                pointer-events: none;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 12px 20px;
                font-size: 16px;
                width: 100%;
                border-radius: 10px;
            }
            .main-nav a.nav-cta {
                text-align: center;
                margin-top: 8px;
            }
            .article-hero {
                padding: 60px 0 50px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-hero .meta {
                font-size: 13px;
                gap: 12px;
            }
            .article-body {
                padding: 28px 20px 36px;
            }
            .article-body .content {
                font-size: 16px;
            }
            .article-body .content h2 {
                font-size: 22px;
            }
            .article-body .content h3 {
                font-size: 18px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title h2 {
                font-size: 24px;
            }
            .article-cta h2 {
                font-size: 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 21px;
            }
            .article-body {
                padding: 20px 16px 28px;
                border-radius: var(--radius-sm);
            }
            .article-body .featured-image {
                max-height: 220px;
            }
            .article-cta .btn-group .btn-primary,
            .article-cta .btn-group .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .sidebar-widget {
                padding: 20px 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .related-card .card-img {
                height: 160px;
            }
        }

        @media (min-width: 769px) {
            .main-nav {
                display: flex !important;
                transform: none !important;
                opacity: 1 !important;
                pointer-events: auto !important;
                position: static !important;
                background: transparent !important;
                box-shadow: none !important;
                padding: 0 !important;
                border-bottom: none !important;
                flex-direction: row !important;
                width: auto !important;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1a4a;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --accent-dark: #c62840;
            --bg-white: #ffffff;
            --bg-light: #f4f6fc;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #333344;
            --text-light: #666680;
            --text-white: #f0f2f8;
            --border-light: #e2e6f0;
            --border-card: #eef0f6;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 12px 40px rgba(26, 42, 108, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.25;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 头部 & 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .site-logo i {
            color: var(--accent);
            font-size: 28px;
        }

        .site-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 15px;
            color: var(--text-body);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 15px;
            color: var(--text-light);
            transition: color var(--transition);
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: var(--primary);
            background: var(--bg-light);
        }

        .main-nav a:hover i,
        .main-nav a:focus-visible i {
            color: var(--primary-light);
        }

        .main-nav a.active {
            color: var(--primary-dark);
            background: rgba(26, 42, 108, 0.07);
            font-weight: 600;
        }

        .main-nav a.active i {
            color: var(--primary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }

        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.30);
            transition: all var(--transition);
        }

        .main-nav a.nav-cta i {
            color: #fff;
        }

        .main-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 69, 96, 0.40);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg-light);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s ease;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                z-index: 999;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 16px;
            }

            .main-nav a.active::after {
                bottom: 4px;
                width: 30px;
            }

            .main-nav a.nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: 8px;
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 60%, #2d4a9e 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(233, 69, 96, 0.15) 0%, transparent 70%);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -1px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.20);
        }

        .category-hero h1 i {
            color: var(--accent-light);
            margin-right: 12px;
        }

        .category-hero p {
            font-size: 18px;
            color: rgba(240, 242, 248, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
            text-shadow: 0 1px 6px rgba(0, 0, 0, 0.12);
        }

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            padding: 6px 20px;
            border-radius: var(--radius-xl);
            color: var(--text-white);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .category-hero .hero-badge i {
            color: var(--accent-light);
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 70px 0 56px;
                min-height: 240px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .category-hero p {
                font-size: 15px;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 70px 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .section-header .section-title {
            margin-bottom: 4px;
        }

        .section-header .section-subtitle {
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .section-subtitle {
                font-size: 14px;
                margin-bottom: 28px;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                margin-bottom: 24px;
            }
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: var(--radius-xl);
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: default;
        }

        .tag i {
            font-size: 12px;
            color: var(--primary-light);
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .tag:hover i {
            color: #fff;
        }

        .tag.tag-active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .tag.tag-active i {
            color: #fff;
        }

        /* ===== 卡片 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-light);
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .card:hover .card-img img {
            transform: scale(1.06);
        }

        .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-xl);
            box-shadow: 0 2px 12px rgba(233, 69, 96, 0.30);
        }

        .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .card-body .card-meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.35;
        }

        .card-body h3 a {
            color: inherit;
            transition: color var(--transition);
        }

        .card-body h3 a:hover {
            color: var(--primary-light);
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 14px;
        }

        .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap var(--transition);
        }

        .card-body .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }

        .card-body .card-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .card-body {
                padding: 16px 18px 20px;
            }

            .card-body h3 {
                font-size: 16px;
            }
        }

        /* ===== 图文区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-block.reverse {
            direction: rtl;
        }

        .feature-block.reverse>* {
            direction: ltr;
        }

        .feature-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
            background: var(--bg-light);
        }

        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .feature-image:hover img {
            transform: scale(1.04);
        }

        .feature-content h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .feature-content p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .feature-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }

        .feature-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-body);
        }

        .feature-content .feature-list li i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        @media (max-width: 820px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .feature-block.reverse {
                direction: ltr;
            }

            .feature-content h2 {
                font-size: 24px;
            }

            .feature-image {
                aspect-ratio: 16 / 9;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: all var(--transition);
        }

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

        .stat-card .stat-icon {
            font-size: 36px;
            color: var(--primary-light);
            margin-bottom: 12px;
        }

        .stat-card .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }

        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-card .stat-number {
                font-size: 30px;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 20px 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

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

        .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-dark);
            background: none;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition), color var(--transition);
            gap: 16px;
        }

        .faq-question i {
            font-size: 18px;
            color: var(--primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-question:hover {
            background: var(--bg-light);
        }

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

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }

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

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }

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

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(240, 242, 248, 0.80);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.30);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(233, 69, 96, 0.40);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.30);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.60);
            transform: translateY(-3px);
            color: #fff;
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .cta-section p {
                font-size: 14px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }

            .cta-section .btn-group {
                flex-direction: column;
                gap: 12px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(240, 242, 248, 0.75);
            padding: 56px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-brand .site-logo {
            color: var(--text-white);
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-flex;
        }

        .site-footer .footer-brand .site-logo span {
            background: none;
            -webkit-text-fill-color: #fff;
            color: #fff;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(240, 242, 248, 0.60);
            max-width: 360px;
        }

        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(240, 242, 248, 0.60);
            padding: 4px 0;
            transition: all var(--transition);
        }

        .site-footer .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .site-footer .footer-col a i {
            margin-right: 8px;
            width: 16px;
            text-align: center;
            color: var(--accent-light);
        }

        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(240, 242, 248, 0.45);
        }

        .site-footer .footer-bottom a {
            color: rgba(240, 242, 248, 0.50);
        }

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

        @media (max-width: 820px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }

            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        /* ===== 分类描述区 ===== */
        .cat-desc {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }

        .cat-desc .container {
            display: flex;
            align-items: center;
            gap: 40px;
            padding-top: 32px;
            padding-bottom: 32px;
        }

        .cat-desc-text {
            flex: 1;
        }

        .cat-desc-text h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .cat-desc-text p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 600px;
        }

        .cat-desc-stats {
            display: flex;
            gap: 32px;
            flex-shrink: 0;
        }

        .cat-desc-stats .stat-item {
            text-align: center;
        }

        .cat-desc-stats .stat-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.1;
        }

        .cat-desc-stats .stat-item .label {
            font-size: 13px;
            color: var(--text-light);
        }

        @media (max-width: 768px) {
            .cat-desc .container {
                flex-direction: column;
                gap: 20px;
                padding-top: 24px;
                padding-bottom: 24px;
                text-align: center;
            }

            .cat-desc-text p {
                max-width: 100%;
            }

            .cat-desc-stats {
                gap: 24px;
            }

            .cat-desc-stats .stat-item .num {
                font-size: 22px;
            }
        }

        @media (max-width: 480px) {
            .cat-desc-stats {
                flex-wrap: wrap;
                justify-content: center;
                gap: 16px 24px;
            }
        }

        /* ===== 工具 ===== */
        .text-center {
            text-align: center;
        }

        .mt-16 {
            margin-top: 16px;
        }

        .mt-24 {
            margin-top: 24px;
        }

        .mt-32 {
            margin-top: 32px;
        }

        .mb-24 {
            margin-bottom: 24px;
        }

        .gap-12 {
            gap: 12px;
        }

        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .container {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 24px;
            }

            .category-hero h1 i {
                display: block;
                margin: 0 auto 8px;
            }

            .tag {
                font-size: 12px;
                padding: 4px 12px;
            }
        }

        /* ===== 骨架屏过渡 ===== */
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }