/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --secondary: #e67e22;
            --secondary-light: #f39c12;
            --accent: #f1c40f;
            --bg-body: #f4f6f9;
            --bg-card: #ffffff;
            --bg-dark: #0b1422;
            --text-main: #1a1a2e;
            --text-light: #5a6a7f;
            --text-white: #f0f4fa;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 50px rgba(0,0,0,0.15);
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --nav-width: 290px;
            --header-h: 0px;
        }

        /* ===== 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);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary-light); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* ===== 分屏导航侧栏 ===== */
        .nav-side {
            position: fixed;
            top: 0; left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            flex-direction: column;
            padding: 32px 28px;
            z-index: 1000;
            overflow-y: auto;
            transition: transform var(--transition);
            border-right: 1px solid rgba(255,255,255,0.06);
        }
        .nav-side .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 40px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .nav-side .logo i { color: var(--secondary); font-size: 1.8rem; }
        .nav-side .logo span { background: linear-gradient(135deg, #fff 60%, var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-side nav { flex: 1; }
        .nav-side nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            margin-bottom: 6px;
            border-radius: var(--radius);
            color: rgba(255,255,255,0.7);
            font-weight: 500;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-side nav a i { width: 22px; text-align: center; font-size: 1.1rem; }
        .nav-side nav a:hover, .nav-side nav a.active {
            background: rgba(255,255,255,0.10);
            color: #fff;
        }
        .nav-side nav a.active::before {
            content: '';
            position: absolute;
            left: 0; top: 50%; transform: translateY(-50%);
            width: 4px; height: 28px;
            background: var(--secondary);
            border-radius: 0 4px 4px 0;
        }
        .nav-side nav a .badge {
            margin-left: auto;
            background: var(--secondary);
            color: #fff;
            font-size: 0.7rem;
            padding: 2px 10px;
            border-radius: 20px;
            font-weight: 600;
        }
        .nav-side .nav-footer {
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .nav-side .nav-footer .social { display: flex; gap: 12px; margin-bottom: 12px; }
        .nav-side .nav-footer .social a {
            color: rgba(255,255,255,0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .nav-side .nav-footer .social a:hover { color: var(--secondary); }

        /* ===== 右侧主内容 ===== */
        .content-main {
            margin-left: var(--nav-width);
            min-height: 100vh;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0;
            height: 64px;
            background: var(--primary);
            padding: 0 20px;
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .mobile-header .logo-m {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-header .logo-m i { color: var(--secondary); }
        .mobile-header .menu-toggle {
            background: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-header .menu-toggle:hover { background: rgba(255,255,255,0.10); }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 998;
            backdrop-filter: blur(4px);
        }
        .mobile-overlay.open { display: block; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 80px 40px;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.30;
            z-index: 0;
            animation: heroZoom 20s ease infinite alternate;
        }
        @keyframes heroZoom { 0% { transform: scale(1); } 100% { transform: scale(1.08); } }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.85) 0%, rgba(15,26,46,0.40) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            text-align: center;
            color: #fff;
        }
        .hero-content .tagline {
            display: inline-block;
            background: rgba(230,126,34,0.25);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(230,126,34,0.3);
            padding: 6px 24px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--secondary-light);
            margin-bottom: 24px;
            letter-spacing: 1px;
        }
        .hero-content h1 {
            color: #fff;
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-content h1 .highlight { background: linear-gradient(135deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-content p {
            color: rgba(255,255,255,0.75);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #fff;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 32px rgba(230,126,34,0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .hero-actions .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(230,126,34,0.45); }
        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.3);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            cursor: pointer;
        }
        .hero-actions .btn-outline:hover { border-color: var(--secondary); background: rgba(230,126,34,0.15); transform: translateY(-2px); }

        /* ===== 板块通用 ===== */
        .section { padding: 80px 0; }
        .section-dark { background: var(--primary); color: #fff; }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-dark p { color: rgba(255,255,255,0.7); }
        .section-gray { background: var(--bg-body); }
        .section-title { text-align: center; margin-bottom: 50px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { max-width: 580px; margin: 0 auto; font-size: 1.05rem; }
        .section-title .overline {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 3px;
            margin-bottom: 8px;
        }

        /* ===== 介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-grid .text h2 { margin-bottom: 16px; }
        .intro-grid .text p { font-size: 1.05rem; line-height: 1.8; }
        .intro-grid .text .features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
        .intro-grid .text .features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
            color: var(--text-main);
        }
        .intro-grid .text .features li i { color: var(--secondary); font-size: 1.1rem; }
        .intro-grid .image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-grid .image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
        .intro-grid .image:hover img { transform: scale(1.03); }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .category-card .card-img {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,26,46,0.6), transparent);
        }
        .category-card .card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { margin-bottom: 10px; }
        .category-card .card-body h3 a { color: var(--primary); }
        .category-card .card-body h3 a:hover { color: var(--secondary); }
        .category-card .card-body p { flex: 1; margin-bottom: 20px; }
        .category-card .card-body .btn-link {
            align-self: flex-start;
            color: var(--secondary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .category-card .card-body .btn-link:hover { gap: 12px; color: var(--secondary-light); }

        /* ===== 最新资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .meta .cat {
            background: rgba(230,126,34,0.12);
            color: var(--secondary);
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-card h4 { margin-bottom: 8px; }
        .news-card h4 a { color: var(--primary); }
        .news-card h4 a:hover { color: var(--secondary); }
        .news-card p { font-size: 0.95rem; margin-bottom: 12px; flex: 1; }
        .news-card .date { font-size: 0.8rem; color: var(--text-light); display: flex; align-items: center; gap: 6px; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-light);
        }
        .news-empty i { font-size: 2.4rem; color: var(--border); margin-bottom: 16px; display: block; }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-item { padding: 20px; }
        .stat-item .number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .label { font-size: 0.95rem; color: rgba(255,255,255,0.7); font-weight: 500; }

        /* ===== 特色流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 48px; left: 15%; right: 15%;
            height: 3px;
            background: linear-gradient(to right, var(--secondary), var(--accent), var(--secondary));
            opacity: 0.3;
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 20px;
        }
        .process-step .step-num {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 8px 24px rgba(230,126,34,0.3);
        }
        .process-step h4 { margin-bottom: 8px; }
        .process-step p { font-size: 0.95rem; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--secondary); }
        .faq-item .faq-q {
            padding: 20px 28px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover { color: var(--secondary); }
        .faq-item .faq-q i { transition: var(--transition); color: var(--text-light); font-size: 1rem; }
        .faq-item.open .faq-q i { transform: rotate(180deg); color: var(--secondary); }
        .faq-item .faq-a {
            padding: 0 28px 20px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a { display: block; }

        /* ===== CTA ===== */
        .cta-wrap {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-wrap::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-wrap * { position: relative; z-index: 1; }
        .cta-wrap h2 { color: #fff; margin-bottom: 12px; }
        .cta-wrap p { color: rgba(255,255,255,0.75); max-width: 520px; margin: 0 auto 28px; }
        .cta-wrap .btn-primary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #fff;
            padding: 16px 48px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 32px rgba(230,126,34,0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-wrap .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(230,126,34,0.45); }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.6);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer h4 { color: #fff; font-size: 1.1rem; margin-bottom: 16px; }
        .footer p { font-size: 0.9rem; color: rgba(255,255,255,0.5); margin-bottom: 0; }
        .footer ul li { margin-bottom: 8px; }
        .footer ul li a { color: rgba(255,255,255,0.5); font-size: 0.9rem; }
        .footer ul li a:hover { color: var(--secondary); }
        .footer .brand-foot { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
        .footer .brand-foot i { color: var(--secondary); }
        .footer .bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
        }

        /* ===== 按钮通用 ===== */
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 50px; font-weight: 600; font-size: 0.95rem; transition: var(--transition); cursor: pointer; border: none; }
        .btn-primary { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: #fff; box-shadow: 0 4px 16px rgba(230,126,34,0.25); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(230,126,34,0.35); color: #fff; }
        .btn-outline { background: transparent; color: var(--secondary); border: 2px solid var(--secondary); }
        .btn-outline:hover { background: var(--secondary); color: #fff; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root { --nav-width: 260px; }
            .nav-side { padding: 24px 20px; }
            .nav-side .logo { font-size: 1.2rem; margin-bottom: 28px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid::before { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .nav-side { transform: translateX(-100%); }
            .nav-side.open { transform: translateX(0); }
            .mobile-header { display: flex; }
            .content-main { margin-left: 0; padding-top: 64px; }
            .hero { min-height: 70vh; padding: 60px 24px; }
            .hero-content h1 { font-size: clamp(2rem, 8vw, 3rem); }
            .intro-grid { grid-template-columns: 1fr; gap: 30px; }
            .intro-grid .image img { height: 260px; }
            .intro-grid .text .features { 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: 16px; }
            .stat-item .number { font-size: 2.2rem; }
            .process-grid { grid-template-columns: 1fr; gap: 24px; }
            .section { padding: 50px 0; }
            .cta-wrap { padding: 40px 24px; border-radius: var(--radius); }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer .bottom { flex-direction: column; text-align: center; }
            .faq-item .faq-q { padding: 16px 20px; }
            .faq-item .faq-a { padding: 0 20px 16px; }
        }

        @media (max-width: 520px) {
            .hero-content .tagline { font-size: 0.75rem; padding: 4px 16px; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { padding: 14px 28px; font-size: 0.9rem; width: 100%; justify-content: center; }
            .section-title p { font-size: 0.95rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .category-card .card-img { height: 180px; }
            .news-card { padding: 18px 20px; }
        }

        /* ===== 工具类 ===== */
        .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; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #e9c46a;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #1d1d1f;
            --text-light: #6c757d;
            --text-muted: #adb5bd;
            --text-on-dark: #f1f3f5;
            --border: #dee2e6;
            --border-light: #e9ecef;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--secondary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h2 { font-size: 2rem; margin-bottom: 1rem; }
        h3 { font-size: 1.4rem; margin-bottom: 0.75rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .brand i { font-size: 1.6rem; color: var(--primary); }
        .brand span { color: var(--secondary); }
        nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        nav a {
            position: relative;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
        }
        nav a i { font-size: 0.9rem; }
        nav a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        nav a.active {
            color: var(--primary);
            background: rgba(230,57,70,0.1);
            font-weight: 600;
        }
        nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .badge {
            display: inline-block;
            padding: 2px 10px;
            font-size: 0.7rem;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--text); padding: 6px; }

        /* ===== Article Hero ===== */
        .article-hero {
            margin-top: var(--header-height);
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb i { font-size: 0.7rem; }
        .article-hero h1 {
            font-size: 2.6rem;
            color: #fff;
            max-width: 800px;
            margin-bottom: 16px;
            line-height: 1.25;
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
        }
        .article-meta i { margin-right: 6px; color: var(--accent); }
        .article-meta .tag {
            display: inline-block;
            padding: 3px 14px;
            background: rgba(255,255,255,0.12);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-light);
            font-weight: 500;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 50px 0 60px;
            background: var(--bg-alt);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-content {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 44px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .article-content .featured-img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 32px;
        }
        .article-content .body-text {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content .body-text p {
            margin-bottom: 1.2rem;
            color: var(--text);
        }
        .article-content .body-text h3 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-size: 1.35rem;
        }
        .article-content .body-text ul, .article-content .body-text ol {
            margin: 1rem 0 1.2rem 1.6rem;
            color: var(--text);
        }
        .article-content .body-text li {
            margin-bottom: 0.5rem;
            list-style: disc;
        }
        .article-content .body-text blockquote {
            margin: 1.5rem 0;
            padding: 16px 24px;
            border-left: 4px solid var(--primary);
            background: #fef2f2;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-content .body-text img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
        }
        .article-content .body-text a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content .body-text a:hover { color: var(--primary-dark); }
        .article-footer-meta {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .article-footer-meta .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-light);
            transition: var(--transition);
            margin-left: 6px;
        }
        .article-footer-meta .share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Sidebar ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1.15rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 3px solid var(--primary);
            display: inline-block;
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a i { color: var(--primary); font-size: 0.8rem; }

        /* ===== CTA ===== */
        .article-cta {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--secondary), #16213e);
            text-align: center;
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
        }
        .article-cta .container { position: relative; z-index: 2; }
        .article-cta h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .article-cta p {
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(230,57,70,0.35); }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.4);
        }
        .btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; transform: translateY(-2px); }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 32px;
        }
        .footer .container { max-width: var(--max-width); }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .brand-foot {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-foot i { color: var(--primary); }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer .bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer .bottom span:last-child { font-size: 0.8rem; }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .not-found-box h2 { color: var(--text); }
        .not-found-box p { color: var(--text-light); max-width: 500px; margin: 12px auto 28px; }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-back:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .article-hero h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            nav { display: none; }
            .nav-toggle { display: block; }
            .nav-open nav {
                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(12px);
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-open nav a { padding: 12px 16px; }
            .nav-open nav a.active::after { display: none; }
            .article-hero { padding: 40px 0 30px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-content { padding: 24px 20px; }
            .article-content .featured-img { height: 220px; }
            .sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer .bottom { flex-direction: column; text-align: center; }
            .btn-group { flex-direction: column; align-items: center; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.35rem; }
            .article-meta { font-size: 0.85rem; gap: 10px; }
            .article-content { padding: 16px; }
            .article-content .featured-img { height: 180px; }
            .footer-grid { grid-template-columns: 1fr; }
            .brand { font-size: 1.1rem; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0b8;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #faf9f6;
            --bg-alt: #f1edeb;
            --bg-dark: #1d1d2b;
            --text: #1a1a2e;
            --text-light: #4a4a5a;
            --text-muted: #7a7a8a;
            --border: #e0ddd9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.07);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.05);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg);
            color: var(--text);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 3rem;
        }
        h2 {
            font-size: 2.25rem;
            margin-bottom: 1rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.125rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 600px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }
        .badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .badge-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .badge-soft {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .tag {
            display: inline-block;
            background: var(--bg-alt);
            color: var(--text-light);
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 20px;
            margin: 0 6px 8px 0;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            background: var(--primary);
            color: #fff;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.3);
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-light {
            background: #fff;
            color: var(--text);
        }
        .btn-light:hover {
            background: var(--bg-alt);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card-body {
            padding: 24px;
        }
        .card-body .tag-list {
            margin-bottom: 12px;
        }
        .card-body h3 {
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .card-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        /* ===== Header / Nav (分屏联动风格) ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.3px;
        }
        .brand i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .brand span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav a i {
            font-size: 0.9rem;
        }
        .nav a:hover {
            background: var(--bg-alt);
            color: var(--text);
        }
        .nav a.active {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(29, 53, 87, 0.2);
        }
        .nav a.active .badge {
            background: var(--accent);
            color: var(--secondary);
        }
        .nav a .badge {
            margin-left: 4px;
            font-size: 0.65rem;
            padding: 1px 8px;
        }
        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero / Banner (内页) ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-banner h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 16px auto 0;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 20px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Category Intro ===== */
        .cat-intro {
            background: var(--bg-alt);
        }
        .cat-intro .grid-2 {
            align-items: center;
        }
        .cat-intro .intro-img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-hover);
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
        }
        .cat-intro .intro-content h2 {
            margin-bottom: 16px;
        }
        .cat-intro .intro-content .stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .cat-intro .intro-content .stat-item {
            text-align: center;
        }
        .cat-intro .intro-content .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .cat-intro .intro-content .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== Race Categories ===== */
        .race-categories .grid-3 .card {
            text-align: center;
            padding: 32px 20px;
        }
        .race-categories .grid-3 .card .icon {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .race-categories .grid-3 .card h3 {
            margin-bottom: 8px;
        }
        .race-categories .grid-3 .card p {
            font-size: 0.9rem;
        }
        .race-categories .grid-3 .card .btn {
            margin-top: 12px;
        }

        /* ===== Timeline / Schedule ===== */
        .timeline-section {
            background: var(--bg-dark);
            color: #fff;
        }
        .timeline-section .section-title h2 {
            color: #fff;
        }
        .timeline-section .section-title h2::after {
            background: var(--accent);
        }
        .timeline-section .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding: 20px 28px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent);
            transition: var(--transition);
        }
        .timeline-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateX(6px);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 24px;
            width: 14px;
            height: 14px;
            background: var(--accent);
            border-radius: 50%;
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 0 3px var(--accent);
        }
        .timeline-item .date {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            color: #fff;
            margin-bottom: 4px;
        }
        .timeline-item p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .timeline-item .tag {
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
            border-color: transparent;
            font-size: 0.7rem;
        }

        /* ===== Featured Races ===== */
        .featured-races .grid-3 .card .card-img {
            aspect-ratio: 16/10;
        }
        .featured-races .card .card-body .meta {
            display: flex;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .featured-races .card .card-body .meta i {
            margin-right: 4px;
        }

        /* ===== Data / Stats ===== */
        .data-section {
            background: var(--bg-alt);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .data-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .data-card .num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .data-card .num span {
            font-size: 1.2rem;
            color: var(--text-muted);
        }
        .data-card .label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            color: var(--text);
        }
        .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: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .faq-item .answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            padding: 80px 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/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 32px;
        }
        .footer .brand-foot {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer .brand-foot i {
            color: var(--primary);
        }
        .footer p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer .bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer .bottom span:last-child {
            font-size: 0.78rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .page-banner h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                gap: 6px;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .page-banner {
                padding: 72px 0 56px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner h1 i {
                display: block;
                margin: 0 auto 8px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .cat-intro .intro-content .stats {
                gap: 20px;
            }
            .cat-intro .intro-content .stat-item .num {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer .bottom {
                flex-direction: column;
                text-align: center;
            }
            .timeline {
                padding-left: 32px;
            }
            .timeline-item {
                padding: 16px 18px;
            }
            .timeline-item::before {
                left: -26px;
                width: 12px;
                height: 12px;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .data-card .num {
                font-size: 2rem;
            }
            .brand {
                font-size: 1.15rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-card {
                padding: 20px 12px;
            }
            .data-card .num {
                font-size: 1.6rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .cat-intro .intro-content .stats {
                gap: 16px;
                justify-content: center;
            }
            .footer-grid {
                gap: 24px;
            }
            .footer .bottom {
                font-size: 0.75rem;
            }
            .nav a {
                font-size: 0.85rem;
                padding: 10px 14px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e53e3e;
            --primary-dark: #c53030;
            --primary-light: #fbd5d5;
            --secondary: #2b6cb0;
            --secondary-dark: #1a365d;
            --accent: #ed8936;
            --bg: #fafafa;
            --bg-alt: #f1f5f9;
            --bg-dark: #1a202c;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f8fafc;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 40px rgba(229, 62, 62, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: '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;
            font-size: 16px;
        }

        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            padding-top: var(--header-height);
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .brand span {
            color: var(--text);
            font-weight: 300;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        nav a i {
            font-size: 0.95rem;
        }
        nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        nav a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(229, 62, 62, 0.35);
        }
        nav a.active:hover {
            background: var(--primary-dark);
            color: var(--text-white);
        }
        nav a .badge {
            font-size: 0.6rem;
            background: var(--accent);
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-left: 2px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 820px) {
            .menu-toggle {
                display: block;
            }
            nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 10px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            nav a {
                width: 100%;
                padding: 12px 20px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            nav a .badge {
                margin-left: auto;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .footer .container {
            max-width: var(--max-width);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .brand-foot {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-light);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .brand-foot i {
            color: var(--accent);
        }
        .footer p {
            color: #94a3b8;
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer .bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #64748b;
        }
        .footer .bottom span:last-child {
            color: #475569;
        }

        @media (max-width: 820px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            color: var(--text);
        }
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .section-dark .section-sub {
            color: #94a3b8;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 820px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-body {
            padding: 22px 24px 26px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .card-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card .btn-sm {
            padding: 6px 18px;
            font-size: 0.82rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(229, 62, 62, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(229, 62, 62, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-light {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.05rem;
        }

        /* ===== Banner / Hero ===== */
        .banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
            overflow: hidden;
            padding: 60px 24px;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 1;
        }
        .banner .container {
            position: relative;
            z-index: 2;
        }
        .banner h1 {
            font-size: 3rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }
        .banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .banner .breadcrumb a:hover {
            color: #fff;
        }
        .banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 820px) {
            .banner {
                min-height: 260px;
                padding: 40px 16px;
            }
            .banner h1 {
                font-size: 2rem;
            }
            .banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .banner h1 {
                font-size: 1.6rem;
            }
            .banner p {
                font-size: 0.92rem;
            }
        }

        /* ===== 标签 ===== */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0 12px;
        }
        .tag {
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: default;
        }
        .tag:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
        }
        .tag-hot {
            background: #fff5f5;
            color: var(--primary-dark);
            border-color: #feb2b2;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item h3 {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: -1px;
        }
        .stat-item p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-top: 4px;
        }
        .section-dark .stat-item h3 {
            color: var(--primary-light);
        }
        .section-dark .stat-item p {
            color: #94a3b8;
        }

        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-item h3 {
                font-size: 2rem;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            display: block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(229, 62, 62, 0.3);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .section-dark .step-item h4 {
            color: var(--text-white);
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        .section-dark .step-item p {
            color: #94a3b8;
        }

        @media (max-width: 820px) {
            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .steps {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            padding: 4px 0;
            user-select: none;
            transition: var(--transition);
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q i {
            transition: var(--transition);
            font-size: 1.1rem;
            color: var(--text-light);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-box .btn {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .cta-box .btn:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }

        @media (max-width: 820px) {
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
        }

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

        /* ===== 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-img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .feature-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text);
        }
        .feature-text p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        @media (max-width: 820px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .feature-img {
                height: 240px;
            }
            .feature-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== 额外辅助 ===== */
        .mb-8 {
            margin-bottom: 32px;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .gap-6 {
            gap: 24px;
        }
        .flex-center {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .w-full {
            width: 100%;
        }