/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b2d;
            --primary-light: #1a2d4a;
            --primary-dark: #080f1a;
            --accent: #f0b90b;
            --accent-hover: #d4a309;
            --accent-light: #fdf0c7;
            --red: #e63946;
            --red-hover: #c52d39;
            --bg: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0a1525;
            --text: #1d1d2c;
            --text-light: #6b7280;
            --text-lighter: #9ca3af;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-accent: 0 4px 20px rgba(240, 185, 11, 0.30);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-height: 72px;
            --bottom-nav-height: 64px;
            --max-width: 1200px;
        }

        /* ===== 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: 1.6;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
            padding-bottom: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-sm {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-fluid {
            width: 100%;
            padding: 0 24px;
        }

        /* ===== 标题层级 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            margin-bottom: 40px;
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .section-header .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 16px auto 0;
        }

        /* ===== 导航 (桌面端) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(15, 27, 45, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15, 27, 45, 0.98);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.30);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--text-white);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links a.active {
            color: var(--text-white);
            background: rgba(240, 185, 11, 0.15);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary) !important;
            font-weight: 600 !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            margin-left: 12px;
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            color: var(--primary) !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-accent);
        }
        .nav-cta i {
            margin-right: 6px;
        }

        /* ===== 移动端底部Tab导航 ===== */
        .bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--bottom-nav-height);
            background: rgba(15, 27, 45, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            z-index: 1000;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0 8px;
            justify-content: space-around;
            align-items: center;
        }
        .bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.65rem;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            min-width: 60px;
            text-decoration: none;
        }
        .bottom-nav a i {
            font-size: 1.3rem;
            transition: var(--transition);
        }
        .bottom-nav a:hover {
            color: rgba(255, 255, 255, 0.8);
        }
        .bottom-nav a.active {
            color: var(--accent);
        }
        .bottom-nav a.active i {
            transform: scale(1.05);
        }
        .bottom-nav a.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 86vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            overflow: hidden;
            margin-top: calc(-1 * var(--nav-height));
            padding-top: var(--nav-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.50;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1.00);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 21, 37, 0.88) 0%, rgba(10, 21, 37, 0.60) 50%, rgba(10, 21, 37, 0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 185, 11, 0.15);
            border: 1px solid rgba(240, 185, 11, 0.25);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            font-size: 3.4rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .hero-title em {
            font-style: normal;
            background: linear-gradient(135deg, var(--accent), #f7d44a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            cursor: pointer;
            border: none;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.10);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.20);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stat-num small {
            font-size: 1rem;
            color: var(--accent);
            font-weight: 600;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
        }

        /* ===== 通用板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .section-alt {
            background: var(--bg);
        }

        /* ===== 核心说明板块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--accent-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent-hover);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 分类入口板块 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .category-card-img {
            transform: scale(1.03);
        }
        .category-card-body {
            padding: 24px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-hover);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .category-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .category-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .category-card .btn {
            align-self: flex-start;
            font-size: 0.9rem;
            padding: 10px 24px;
        }

        /* ===== 最新资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .news-thumb {
            width: 140px;
            height: 100px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border);
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-category {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent-hover);
            background: var(--accent-light);
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 8px;
        }
        .news-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-info h4 a {
            color: var(--primary);
        }
        .news-info h4 a:hover {
            color: var(--accent-hover);
        }
        .news-summary {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.75rem;
            color: var(--text-lighter);
        }
        .news-meta i {
            margin-right: 4px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.4rem;
            color: var(--text-lighter);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== 数据统计板块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-card .stat-number small {
            font-size: 1rem;
            color: var(--accent);
            font-weight: 600;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 8px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            gap: 16px;
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1.2rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            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: 0.08;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            background: var(--text-white);
            color: var(--primary);
        }
        .cta-section .btn-primary:hover {
            background: var(--accent);
            color: var(--primary);
            box-shadow: var(--shadow-accent);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
            margin-bottom: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .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: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式 ===== */

        /* 平板 */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 手机 */
        @media (max-width: 768px) {
            body {
                padding-top: 0;
                padding-bottom: var(--bottom-nav-height);
            }
            .site-header {
                display: none;
            }
            .bottom-nav {
                display: flex;
            }
            .hero {
                min-height: 80vh;
                padding-top: 20px;
                margin-top: 0;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-num {
                font-size: 1.5rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-card-img {
                height: 180px;
            }
            .news-card {
                flex-direction: column;
                padding: 16px;
            }
            .news-thumb {
                width: 100%;
                height: 180px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .cta-section {
                padding: 40px 24px;
                border-radius: var(--radius);
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .container {
                padding: 0 16px;
            }
            .section-header .section-title::after {
                margin-top: 12px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .bottom-nav a {
                font-size: 0.6rem;
                padding: 4px 8px;
                min-width: 50px;
            }
            .bottom-nav a i {
                font-size: 1.1rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2d4a7a;
            --accent: #f4a261;
            --accent-light: #ffd166;
            --bg-body: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section-alt: #f0f2f5;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-color: #e0e0e8;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', 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-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            padding-top: var(--header-height);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo i { color: var(--primary); font-size: 26px; }
        .logo span { background: linear-gradient(135deg, var(--secondary), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.9; transform: scale(1.02); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-links a i { font-size: 14px; }
        .nav-links a:hover { background: rgba(230,57,70,0.08); color: var(--primary); }
        .nav-links a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(230,57,70,0.3); }
        .nav-links a.active:hover { background: var(--primary-dark); }
        .nav-links a.nav-cta {
            background: var(--secondary);
            color: #fff;
            padding: 8px 22px;
            box-shadow: 0 4px 14px rgba(29,53,87,0.25);
        }
        .nav-links a.nav-cta:hover { background: var(--secondary-light); transform: translateY(-1px); }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-light);
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
        }
        .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 10px;
            font-size: 11px;
            color: var(--text-light);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            min-width: 56px;
        }
        .tab-item i { font-size: 20px; transition: var(--transition); }
        .tab-item span { font-weight: 500; letter-spacing: 0.3px; }
        .tab-item:hover, .tab-item.active { color: var(--primary); }
        .tab-item.active i { transform: scale(1.1); }
        .tab-item.tab-cta i { color: var(--accent); }
        .tab-item.tab-cta.active i { color: var(--primary); }

        /* ===== Hero Banner (inner) ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 60%, var(--primary-dark) 100%);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb a { color: rgba(255,255,255,0.85); text-decoration: none; }
        .page-hero .breadcrumb a:hover { color: #fff; }
        .page-hero .breadcrumb i { font-size: 12px; color: rgba(255,255,255,0.4); }
        .page-hero .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            color: rgba(255,255,255,0.9);
            margin-top: 16px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .page-hero .meta-badge i { color: var(--accent-light); }

        /* ===== Article Main ===== */
        .article-main {
            padding: 50px 0 80px;
            flex: 1;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            border: 1px solid var(--border-light);
        }
        .article-body .article-title { display: none; }
        .article-body .article-meta-top {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            padding-bottom: 24px;
            margin-bottom: 28px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-body .article-meta-top .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
        }
        .article-body .article-meta-top .date {
            font-size: 14px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-body .article-content {
            font-size: 16.5px;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body .article-content h2 { font-size: 24px; margin: 36px 0 16px; color: var(--secondary); }
        .article-body .article-content h3 { font-size: 20px; margin: 28px 0 12px; color: var(--secondary); }
        .article-body .article-content p { margin-bottom: 18px; }
        .article-body .article-content ul, .article-body .article-content ol { margin: 16px 0 20px; padding-left: 24px; }
        .article-body .article-content li { margin-bottom: 10px; list-style: disc; }
        .article-body .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(230,57,70,0.04);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .article-content img { border-radius: var(--radius-md); margin: 24px 0; }
        .article-body .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-body .article-tags span {
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 13px;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary); font-size: 18px; }
        .sidebar-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); transform: translateX(4px); }
        .sidebar-list .thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-section-alt);
        }
        .sidebar-list .info { flex: 1; min-width: 0; }
        .sidebar-list .info .title { font-size: 14px; font-weight: 600; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .sidebar-list .info .date { font-size: 12px; color: var(--text-light); margin-top: 4px; display: block; }
        .sidebar-cta {
            text-align: center;
            padding: 28px 20px;
            background: linear-gradient(135deg, var(--secondary), var(--primary-dark));
            border-radius: var(--radius-md);
            color: #fff;
        }
        .sidebar-cta h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 14px; opacity: 0.85; margin-bottom: 16px; }
        .sidebar-cta .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            background: var(--accent);
            color: var(--secondary);
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(244,162,97,0.3); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .not-found-box i { font-size: 72px; color: var(--primary-light); margin-bottom: 24px; opacity: 0.5; }
        .not-found-box h2 { font-size: 28px; color: var(--secondary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; font-size: 16px; }
        .not-found-box .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            transition: var(--transition);
        }
        .not-found-box .btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
            margin-top: auto;
        }
        .site-footer .container { max-width: var(--max-width); padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand .logo i { color: var(--primary-light); }
        .footer-brand p { font-size: 14px; line-height: 1.8; opacity: 0.7; max-width: 320px; }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            color: rgba(255,255,255,0.65);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul a:hover { color: var(--accent-light); transform: translateX(4px); }
        .footer-col ul a i { font-size: 13px; width: 18px; color: var(--primary-light); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            opacity: 0.7;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.8); }
        .footer-bottom a:hover { color: var(--accent-light); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr 280px; gap: 28px; }
            .article-body { padding: 32px; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .header-inner { padding: 0 16px; }
            .nav-links a { padding: 6px 14px; font-size: 14px; }
            .nav-links a span { display: none; }
            .nav-links a i { font-size: 16px; }
            .nav-links a.nav-cta { padding: 6px 16px; }
            .page-hero { padding: 56px 0 40px; min-height: 200px; }
            .page-hero h1 { font-size: 26px; }
            .article-layout { grid-template-columns: 1fr; }
            .article-body { padding: 24px; border-radius: var(--radius-md); }
            .article-body .article-content { font-size: 15px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .mobile-bottom-tab { display: block; }
            body { padding-bottom: 64px; }
            .sidebar-card { padding: 20px; }
        }
        @media (max-width: 520px) {
            .header-inner { gap: 12px; }
            .logo span { font-size: 18px; }
            .nav-links a { padding: 6px 10px; font-size: 13px; }
            .page-hero h1 { font-size: 22px; }
            .page-hero .meta-badge { font-size: 12px; padding: 4px 14px; flex-wrap: wrap; }
            .article-body { padding: 18px; }
            .article-body .article-meta-top { flex-direction: column; align-items: flex-start; gap: 10px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .sidebar-list a { gap: 10px; }
            .sidebar-list .thumb { width: 48px; height: 48px; }
        }

        /* ===== Print ===== */
        @media print {
            .site-header, .mobile-bottom-tab, .site-footer, .article-sidebar { display: none !important; }
            body { padding-top: 0; background: #fff; }
            .article-body { box-shadow: none; border: none; padding: 0; }
            .page-hero { padding: 30px 0; background: #f5f5f5 !important; min-height: auto; }
            .page-hero::before, .page-hero::after { display: none; }
            .page-hero h1 { color: #222; }
            .page-hero .breadcrumb, .page-hero .meta-badge { color: #555; }
            .page-hero .breadcrumb a { color: #333; }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0b8;
            --primary-gradient: linear-gradient(135deg, #e63946 0%, #c1121f 100%);
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-glow: #ffb703;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1d3557;
            --bg-section-alt: #f1f3f5;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #f8f9fa;
            --border-light: #e9ecef;
            --border-medium: #ced4da;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--secondary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.25;
            font-weight: 700;
        }

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

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            text-decoration: none;
            transition: var(--transition);
        }
        .logo i {
            color: var(--primary);
            font-size: 1.65rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-links a:hover {
            background: rgba(230, 57, 70, 0.06);
            color: var(--primary);
        }
        .nav-links a:hover i {
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.30);
        }
        .nav-links a.active i {
            color: #fff;
        }
        .nav-links a.nav-cta {
            background: var(--secondary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 40px;
            box-shadow: 0 4px 12px rgba(29, 53, 87, 0.25);
        }
        .nav-links a.nav-cta i {
            color: #fff;
        }
        .nav-links a.nav-cta:hover {
            background: #162a45;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(29, 53, 87, 0.35);
        }

        /* Mobile bottom tab */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-light);
            z-index: 999;
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
        }
        .mobile-bottom-tab .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 600px;
            margin: 0 auto;
            padding: 0 8px;
        }
        .mobile-bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 10px;
            font-size: 0.68rem;
            font-weight: 500;
            color: var(--text-muted);
            text-decoration: none;
            border-radius: 12px;
            transition: var(--transition);
            min-width: 56px;
        }
        .mobile-bottom-tab a i {
            font-size: 1.25rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .mobile-bottom-tab a.active {
            color: var(--primary);
        }
        .mobile-bottom-tab a.active i {
            color: var(--primary);
        }
        .mobile-bottom-tab a:hover {
            color: var(--primary);
        }
        .mobile-bottom-tab a:hover i {
            color: var(--primary);
        }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            margin-top: var(--header-h);
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(29, 53, 87, 0.92) 0%, rgba(230, 57, 70, 0.70) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3.2rem;
            color: #fff;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.20);
        }
        .page-hero h1 i {
            margin-right: 12px;
            color: var(--accent);
        }
        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .page-hero .hero-tags span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.20);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .page-hero .hero-tags span i {
            color: var(--accent);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-dark .section-title h2 {
            color: #fff;
        }
        .section-dark .section-title p {
            color: rgba(255, 255, 255, 0.70);
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--border-light);
        }
        .card .card-body {
            padding: 24px;
        }
        .card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card .card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card .card-body .card-tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card .card-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .card .card-footer .btn-sm {
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .card .card-footer .btn-sm:hover {
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
            transform: translateY(-1px);
        }

        /* ===== Login Methods ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }
        .method-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .method-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .method-card .method-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 2rem;
            color: #fff;
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.20);
        }
        .method-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .method-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== 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-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            background: rgba(230, 57, 70, 0.03);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }

        /* ===== Safety Tips ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .safety-item {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(4px);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.10);
            transition: var(--transition);
        }
        .safety-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
        }
        .safety-item .safety-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .safety-item h4 {
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 6px;
        }
        .safety-item p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
        }

        /* ===== CTA Block ===== */
        .cta-block {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: #fff;
            box-shadow: 0 20px 60px rgba(230, 57, 70, 0.25);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.10) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 2rem;
            color: #fff;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-block .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            position: relative;
        }
        .cta-block .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-block .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
        }
        .cta-block .btn-cta-secondary {
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.40);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-block .btn-cta-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 60px 0 30px;
            margin-bottom: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .site-footer .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            background: none;
            color: #fff;
        }
        .site-footer .footer-brand .logo i {
            -webkit-text-fill-color: var(--primary);
            background: none;
            color: var(--primary);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .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: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.50);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.60);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 14px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.60);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Process Steps ===== */
        .steps {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 260px;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

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

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav-links a span {
                display: none;
            }
            .nav-links a {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .nav-links a i {
                font-size: 1.1rem;
            }
            .nav-links a.nav-cta {
                padding: 8px 16px;
            }
            .nav-links a.nav-cta span {
                display: inline;
            }
            .mobile-bottom-tab {
                display: block;
            }
            .site-footer {
                padding-bottom: 80px;
            }

            .page-hero {
                padding: 60px 0 50px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 1.7rem;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .methods-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .safety-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps {
                gap: 16px;
            }
            .step-item {
                flex: 1 1 160px;
                max-width: 200px;
                padding: 24px 16px;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.78rem;
            }
            .nav-links a.nav-cta {
                padding: 6px 12px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-tags span {
                font-size: 0.78rem;
                padding: 4px 14px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .methods-grid {
                grid-template-columns: 1fr;
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .steps {
                flex-direction: column;
                align-items: center;
            }
            .step-item {
                max-width: 100%;
                width: 100%;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .cta-block .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .mobile-bottom-tab a {
                font-size: 0.6rem;
                min-width: 48px;
                padding: 4px 6px;
            }
            .mobile-bottom-tab a i {
                font-size: 1.1rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d6e;
            --primary-dark: #0a1229;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --accent2: #ef4444;
            --accent2-light: #f87171;
            --bg: #f0f2f5;
            --bg-card: #ffffff;
            --bg-soft: #f8fafc;
            --bg-dark: #0f1b3d;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(15, 27, 61, 0.08);
            --shadow-lg: 0 12px 48px rgba(15, 27, 61, 0.14);
            --shadow-hover: 0 12px 40px rgba(15, 27, 61, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --header-h: 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: 1rem;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-h);
        }

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

        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;
            transition: var(--transition);
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(15, 27, 61, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }

        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            position: relative;
        }

        .nav-links a i {
            font-size: 0.9rem;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(245, 158, 11, 0.18);
            box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.25);
        }

        .nav-links a.active i {
            color: var(--accent);
        }

        .nav-links .nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            margin-left: 6px;
        }

        .nav-links .nav-cta:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }

        /* Mobile hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: var(--transition);
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15, 27, 61, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 6px;
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }

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

            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

            .nav-links .nav-cta {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
                justify-content: center;
            }

            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }
        }

        @media (max-width: 520px) {
            .logo span {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .header-inner {
                padding: 0 16px;
            }
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(15, 27, 61, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 6px env(safe-area-inset-bottom, 8px);
            justify-content: space-around;
            align-items: center;
        }

        .mobile-bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: 12px;
            font-size: 0.65rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            min-width: 60px;
        }

        .mobile-bottom-tab a i {
            font-size: 1.3rem;
            transition: var(--transition);
        }

        .mobile-bottom-tab a:hover,
        .mobile-bottom-tab a.active {
            color: var(--accent);
        }

        .mobile-bottom-tab a.active i {
            color: var(--accent);
            transform: scale(1.05);
        }

        .mobile-bottom-tab a.active {
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
        }

        @media (max-width: 768px) {
            .mobile-bottom-tab {
                display: flex;
            }
            body {
                padding-bottom: 68px;
            }
        }

        @media (max-width: 520px) {
            .mobile-bottom-tab a {
                min-width: 48px;
                padding: 4px 8px;
                font-size: 0.6rem;
            }
            .mobile-bottom-tab a i {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 60px 24px;
            background: var(--primary-dark);
            overflow: hidden;
            isolation: isolate;
        }

        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
            animation: heroZoom 18s ease-in-out infinite alternate;
        }

        @keyframes heroZoom {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.08);
            }
        }

        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 27, 61, 0.85) 0%, rgba(15, 27, 61, 0.6) 100%);
            z-index: 1;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.18);
            border: 1px solid rgba(245, 158, 11, 0.3);
            padding: 6px 20px;
            border-radius: 100px;
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-hero h1 span {
            color: var(--accent);
        }

        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .category-hero .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 100px;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.3);
        }

        .category-hero .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
        }

        .category-hero .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: 100px;
            border: 2px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }

        .category-hero .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 300px;
                padding: 48px 16px;
            }
            .category-hero h1 {
                font-size: 2.1rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .category-hero .btn-primary,
            .category-hero .btn-outline {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .category-hero .btn-primary,
            .category-hero .btn-outline {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.2);
            padding: 4px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-dark);
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        /* ===== 赛事分类卡片 ===== */
        .sports-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .sport-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid var(--border);
        }

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

        .sport-card .card-img {
            position: relative;
            height: 160px;
            overflow: hidden;
        }

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

        .sport-card:hover .card-img img {
            transform: scale(1.08);
        }

        .sport-card .card-img .overlay-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(15, 27, 61, 0.8);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .sport-card .card-body {
            padding: 18px 20px 22px;
        }

        .sport-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .sport-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .sport-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
        }

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

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

        @media (max-width: 520px) {
            .sports-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .sport-card .card-img {
                height: 140px;
            }
        }

        /* ===== 热门赛事推荐 ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

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

        .featured-card .fc-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

        .featured-card:hover .fc-img img {
            transform: scale(1.08);
        }

        .featured-card .fc-img .fc-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }

        .featured-card .fc-body {
            padding: 22px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card .fc-body .fc-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(245, 158, 11, 0.1);
            padding: 2px 12px;
            border-radius: 100px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .featured-card .fc-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .featured-card .fc-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .featured-card .fc-body .fc-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .featured-card .fc-body .fc-footer i {
            color: var(--accent);
            margin-right: 4px;
        }

        .featured-card .fc-body .fc-footer .fc-link {
            color: var(--primary-light);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

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

        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .featured-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .featured-card .fc-img {
                height: 170px;
            }
            .featured-card .fc-body {
                padding: 18px 18px 22px;
            }
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 18px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }

        .news-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }

        .news-item .news-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(245, 158, 11, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
        }

        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-item .news-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .news-item .news-content p {
            font-size: 0.88rem;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-item .news-meta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .news-item .news-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 18px;
            }
            .news-item .news-meta {
                width: 100%;
                justify-content: flex-start;
                border-top: 1px solid var(--border);
                padding-top: 10px;
            }
            .news-item .news-content h4 {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .news-item {
                padding: 14px 16px;
            }
            .news-item .news-icon {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }

        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-item .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

        .stat-item .stat-icon {
            font-size: 2rem;
            color: rgba(245, 158, 11, 0.3);
            margin-bottom: 10px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 520px) {
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .stat-item .stat-label {
                font-size: 0.85rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--accent);
        }

        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }

        .faq-item .faq-q i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item .faq-q:hover {
            color: var(--accent-dark);
        }

        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }

        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-a {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 72px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
        }

        .cta-content .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 48px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: 100px;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.3);
        }

        .cta-content .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 44px rgba(245, 158, 11, 0.45);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 52px 16px;
            }
            .cta-content h2 {
                font-size: 1.7rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
            .cta-content .cta-btn {
                padding: 14px 36px;
                font-size: 1rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 14px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .footer-col ul a i {
            width: 18px;
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-col h4 {
                margin-bottom: 10px;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }

        /* ===== Section背景交替 ===== */
        .section-bg-alt {
            background: var(--bg-soft);
        }

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

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 16px 0 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            position: relative;
            z-index: 2;
            justify-content: center;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

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

        .breadcrumb span {
            color: rgba(255, 255, 255, 0.8);
        }

        .breadcrumb i {
            font-size: 0.6rem;
            color: rgba(255, 255, 255, 0.3);
        }