/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #d4a843;
            --secondary-light: #e8c76a;
            --secondary-dark: #b8892e;
            --accent: #e8563a;
            --accent-light: #f07a62;
            --bg-body: #f5f7fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a3a;
            --bg-section-alt: #eef1f8;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-light: #f0f2f8;
            --text-white: #ffffff;
            --border-color: #dde0ea;
            --border-light: #e8ebf2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26,42,108,0.06);
            --shadow-md: 0 6px 24px rgba(26,42,108,0.10);
            --shadow-lg: 0 16px 48px rgba(26,42,108,0.14);
            --shadow-hover: 0 20px 56px rgba(26,42,108,0.18);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --nav-width: 260px;
            --header-height: 70px;
            --gutter: 24px;
            --section-pad: 80px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; }
        h3 { font-size: 1.6rem; }
        h4 { font-size: 1.25rem; }
        p { margin-bottom: 0; }
        .container { max-width: 1200px; padding: 0 var(--gutter); margin: 0 auto; }

        /* ===== 左侧竖向导航 ===== */
        .app-wrapper { display: flex; min-height: 100vh; }
        .sidebar {
            width: var(--nav-width);
            position: fixed;
            top: 0; left: 0;
            bottom: 0;
            background: var(--bg-dark);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 0;
            overflow-y: auto;
            transition: transform 0.35s ease;
            border-right: 1px solid rgba(255,255,255,0.06);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 28px 20px 22px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .sidebar-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            text-align: center;
            line-height: 1.4;
        }
        .sidebar-brand .logo-text span { color: var(--secondary); }
        .sidebar-nav { flex: 1; padding: 20px 16px; }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 18px;
            margin-bottom: 4px;
            border-radius: var(--radius-md);
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
        }
        .sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1.1rem; }
        .sidebar-nav .nav-item:hover {
            background: rgba(255,255,255,0.08);
            color: var(--text-white);
        }
        .sidebar-nav .nav-item.active {
            background: var(--secondary);
            color: var(--primary-dark);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(212,168,67,0.3);
        }
        .sidebar-nav .nav-divider {
            height: 1px;
            background: rgba(255,255,255,0.08);
            margin: 14px 18px;
        }
        .sidebar-nav .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: rgba(255,255,255,0.35);
            padding: 8px 18px 4px;
            font-weight: 600;
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            text-align: center;
        }
        .sidebar-footer .social-icons { display: flex; justify-content: center; gap: 12px; margin-bottom: 10px; }
        .sidebar-footer .social-icons a {
            width: 34px; height: 34px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            display: flex; align-items: center; justify-content: center;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-footer .social-icons a:hover { background: var(--secondary); color: var(--primary-dark); }
        .sidebar-footer .copyright {
            font-size: 0.72rem;
            color: rgba(255,255,255,0.3);
            line-height: 1.5;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            background: var(--bg-body);
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1040;
            background: var(--bg-dark);
            padding: 0 var(--gutter);
            height: var(--header-height);
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 20px rgba(0,0,0,0.15);
        }
        .mobile-header .logo-text-mobile {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
        }
        .mobile-header .logo-text-mobile span { color: var(--secondary); }
        .mobile-header .hamburger {
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            padding: 4px 8px;
            cursor: pointer;
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.55);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }
        .sidebar.show { transform: translateX(0); }
        .sidebar-overlay.show { display: block; }

        /* ===== 板块通用 ===== */
        .section { padding: var(--section-pad) 0; }
        .section-alt { background: var(--bg-section-alt); }
        .section-dark { background: var(--bg-dark); color: var(--text-light); }
        .section-dark h2, .section-dark h3 { color: var(--text-white); }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header .subtitle {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(212,168,67,0.12);
            color: var(--secondary-dark);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            border: 1px solid rgba(212,168,67,0.2);
        }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { color: var(--text-secondary); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
        .section-dark .section-header .subtitle { background: rgba(255,255,255,0.08); color: var(--secondary-light); border-color: rgba(255,255,255,0.1); }
        .section-dark .section-header p { color: rgba(255,255,255,0.65); }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,58,0.92) 0%, rgba(26,42,108,0.70) 100%);
        }
        .hero .container { position: relative; z-index: 1; padding: 60px var(--gutter); }
        .hero-content { max-width: 700px; }
        .hero-badge {
            display: inline-block;
            padding: 6px 22px;
            border-radius: 50px;
            background: rgba(212,168,67,0.18);
            color: var(--secondary-light);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(212,168,67,0.25);
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .hero-content h1 span { color: var(--secondary); }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn { 
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary-custom {
            background: var(--secondary);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(212,168,67,0.35);
        }
        .btn-primary-custom:hover {
            background: var(--secondary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(212,168,67,0.45);
        }
        .btn-outline-light-custom {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.3);
        }
        .btn-outline-light-custom:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--text-white);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stats .stat-item { text-align: left; }
        .hero-stats .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stats .stat-number span { color: var(--secondary); }
        .hero-stats .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            margin-top: 4px;
        }

        /* ===== 平台简介 ===== */
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-text h2 { margin-bottom: 16px; }
        .intro-text p { color: var(--text-secondary); margin-bottom: 20px; font-size: 1.02rem; line-height: 1.8; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
        .intro-features li {
            display: flex; align-items: center; gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .intro-features li i { color: var(--secondary); font-size: 0.85rem; width: 18px; }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid var(--border-light);
            text-decoration: none;
            display: block;
            color: inherit;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary);
            color: inherit;
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .card-img img { transform: scale(1.06); }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15,26,58,0.6) 0%, transparent 60%);
        }
        .category-card .card-body { padding: 24px 26px 28px; }
        .category-card .card-body .cat-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(212,168,67,0.1);
            color: var(--secondary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .category-card .card-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
        .category-card .card-body p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.6; }
        .category-card .card-body .arrow-link {
            display: inline-flex; align-items: center; gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 12px;
            transition: var(--transition);
        }
        .category-card:hover .arrow-link { gap: 10px; color: var(--secondary-dark); }

        /* ===== 最新资讯 / CMS 列表 ===== */
        .news-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(212,168,67,0.3);
        }
        .news-card .news-img {
            height: 180px;
            overflow: hidden;
        }
        .news-card .news-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-card:hover .news-img img { transform: scale(1.05); }
        .news-card .news-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .news-card .news-meta {
            display: flex; align-items: center; gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-card .news-meta .cat-badge {
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(26,42,108,0.06);
            color: var(--primary);
            font-weight: 500;
        }
        .news-card .news-body h4 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
        .news-card .news-body h4 a { color: var(--text-primary); }
        .news-card .news-body h4 a:hover { color: var(--primary); }
        .news-card .news-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-body .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            margin-top: 12px;
            display: inline-flex; align-items: center; gap: 4px;
        }
        .news-card .news-body .read-more:hover { gap: 8px; color: var(--secondary-dark); }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
        }
        .news-empty i { font-size: 2.4rem; margin-bottom: 12px; color: var(--border-color); }

        /* ===== 核心数据 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .stat-card .stat-icon {
            width: 56px; height: 56px;
            border-radius: 50%;
            background: rgba(212,168,67,0.1);
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.4rem;
            color: var(--secondary);
        }
        .stat-card .stat-number { font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-card .stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 6px; }

        /* ===== 使用流程 ===== */
        .flow-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; position: relative; }
        .flow-grid::before {
            content: '';
            position: absolute;
            top: 48px; left: 60px; right: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary) 0%, var(--secondary-light) 100%);
            z-index: 0;
            opacity: 0.3;
        }
        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 20px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .flow-step .step-number {
            width: 56px; height: 56px;
            border-radius: 50%;
            background: var(--secondary);
            color: var(--primary-dark);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            margin: 0 auto 16px;
            box-shadow: 0 4px 20px rgba(212,168,67,0.3);
        }
        .flow-step h4 { font-size: 1.1rem; margin-bottom: 8px; }
        .flow-step p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.6; }

        /* ===== 功能特色 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .feature-card .feat-icon {
            width: 64px; height: 64px;
            border-radius: 50%;
            background: rgba(212,168,67,0.1);
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .feature-card h4 { font-size: 1.15rem; margin-bottom: 10px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(212,168,67,0.25); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1.02rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--secondary); transition: transform 0.3s; font-size: 0.85rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 { color: var(--text-white); font-size: 2.4rem; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.7); max-width: 540px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; }
        .footer-brand .logo-text-footer {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand .logo-text-footer span { color: var(--secondary); }
        .footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.88rem; line-height: 1.7; max-width: 300px; }
        .footer h5 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
        .footer-links li { margin-bottom: 8px; }
        .footer-links a {
            color: rgba(255,255,255,0.5);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.78rem; }
        .footer-bottom a { color: rgba(255,255,255,0.35); font-size: 0.78rem; }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2,1fr); }
            .flow-grid { grid-template-columns: repeat(2,1fr); }
            .flow-grid::before { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --section-pad: 48px; --nav-width: 0px; }
            .sidebar { transform: translateX(-100%); }
            .sidebar.show { transform: translateX(0); }
            .mobile-header { display: flex; }
            .main-content { margin-left: 0; }
            .hero { min-height: 480px; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-stats { gap: 20px; flex-wrap: wrap; }
            .hero-stats .stat-item { flex: 1; min-width: 100px; }
            .hero-stats .stat-number { font-size: 1.6rem; }
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-features { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2,1fr); }
            .flow-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .cta-section h2 { font-size: 1.8rem; }
            .section-header { margin-bottom: 32px; }
            h2 { font-size: 1.7rem; }
        }

        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.7rem; }
            .hero-actions { flex-direction: column; }
            .btn { justify-content: center; padding: 12px 24px; }
            .stats-grid { grid-template-columns: 1fr; }
            .section { padding: 36px 0; }
            .hero .container { padding: 40px var(--gutter); }
            .category-card .card-img { height: 160px; }
            .news-card .news-img { height: 140px; }
        }

        /* ===== 辅助 ===== */
        .text-gold { color: var(--secondary); }
        .bg-gold-light { background: rgba(212,168,67,0.08); }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .mt-2 { margin-top: 8px; }
        .mt-3 { margin-top: 16px; }
        .mt-4 { margin-top: 24px; }
        .mb-3 { margin-bottom: 16px; }
        .mb-4 { margin-bottom: 24px; }
        .text-center { text-align: center; }
        .d-flex { display: flex; }
        .align-items-center { align-items: center; }
        .justify-content-center { justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-100 { width: 100%; }

        /* Bootstrap 覆盖 */
        .btn-check:focus + .btn, .btn:focus { box-shadow: none; }
        .form-control:focus { border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(212,168,67,0.15); }

/* roulang page: article */
:root {
            --primary: #e63e2e;
            --primary-dark: #c92a1a;
            --primary-light: #fce4e0;
            --secondary: #1a1a2e;
            --accent: #f5a623;
            --bg-body: #f4f5f9;
            --bg-card: #ffffff;
            --bg-sidebar: #1a1a2e;
            --text-primary: #1a1a2e;
            --text-secondary: #5a5a7a;
            --text-light: #8e8ea0;
            --text-white: #ffffff;
            --border: #e8e8f0;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 2px 16px rgba(26, 26, 46, 0.06);
            --shadow-hover: 0 8px 32px rgba(26, 26, 46, 0.12);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.65;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul { list-style: none; padding: 0; margin: 0; }
        .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
        .container-fluid { padding: 0 24px; }

        /* ===== Sidebar ===== */
        .sidebar {
            width: 240px;
            min-width: 240px;
            background: var(--bg-sidebar);
            color: var(--text-white);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            position: fixed;
            left: 0;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
        }
        .logo-text span { color: var(--primary); }

        .sidebar-nav { padding: 16px 12px; flex: 1; }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.7);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .nav-item i { width: 20px; text-align: center; font-size: 16px; }
        .nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
        .nav-item.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(230,62,46,0.3); }
        .nav-divider { height: 1px; background: rgba(255,255,255,0.08); margin: 12px 16px; }
        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            color: rgba(255,255,255,0.3);
            padding: 8px 16px 4px;
            font-weight: 600;
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 12px;
            color: rgba(255,255,255,0.4);
            text-align: center;
        }

        /* ===== Main Content ===== */
        .main-content {
            flex: 1;
            margin-left: 240px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Top Bar (mobile) ===== */
        .top-bar {
            display: none;
            background: var(--bg-card);
            padding: 12px 20px;
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .top-bar .logo-text { font-size: 18px; color: var(--text-primary); }
        .top-bar .logo-text span { color: var(--primary); }
        .menu-toggle {
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-primary);
            padding: 4px 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
        }
        .menu-toggle:hover { background: var(--primary-light); }

        /* ===== Article Header ===== */
        .article-header {
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .article-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-header .container { position: relative; z-index: 1; }
        .article-breadcrumb {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-breadcrumb a:hover { color: #fff; }
        .article-breadcrumb .separator { margin: 0 10px; opacity: 0.4; }
        .article-title {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 860px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: rgba(255,255,255,0.65);
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { font-size: 14px; }
        .article-meta .badge-cat {
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 50px 0 60px;
            flex: 1;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
        }
        .article-content {
            font-size: 16.5px;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--secondary);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--secondary);
        }
        .article-content p { margin-bottom: 18px; }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            width: 100%;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-content li { margin-bottom: 8px; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 18px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            background: var(--bg-body);
            color: var(--text-secondary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary-light); color: var(--primary); }

        /* ===== Sidebar Widgets ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
        .widget {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
        }
        .widget h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .widget h5 i { color: var(--primary); }
        .widget-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .widget-list li:last-child { border-bottom: none; }
        .widget-list a {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .widget-list a:hover { color: var(--primary); padding-left: 4px; }
        .widget-list a i { font-size: 12px; color: var(--primary); }

        .widget-cat a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-secondary);
        }
        .widget-cat a:last-child { border-bottom: none; }
        .widget-cat a:hover { color: var(--primary); }
        .widget-cat .count {
            background: var(--bg-body);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .not-found-box i { font-size: 64px; color: var(--text-light); margin-bottom: 20px; }
        .not-found-box h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }

        /* ===== Footer ===== */
        .footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .logo-text-footer span { color: var(--primary); }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer h5 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a {
            font-size: 13.5px;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
        }
        .footer-links a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }
        .footer-bottom p { margin: 0; }

        /* ===== Mobile overlay ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 1045;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        }

        @media (max-width: 820px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); }
            .sidebar-overlay.open { display: block; }
            .main-content { margin-left: 0; }
            .top-bar { display: flex; }
            .article-title { font-size: 28px; }
            .article-main { padding: 28px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        }

        @media (max-width: 576px) {
            .container { padding: 0 16px; }
            .article-header { padding: 40px 0 32px; }
            .article-title { font-size: 22px; }
            .article-main { padding: 20px; border-radius: var(--radius-sm); }
            .article-content { font-size: 15px; }
            .article-meta { gap: 12px; font-size: 13px; flex-wrap: wrap; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .widget { padding: 18px; }
            .not-found-box { padding: 40px 16px; }
        }

        /* ===== Print ===== */
        @media print {
            .sidebar, .top-bar, .article-sidebar, .footer { display: none; }
            .main-content { margin-left: 0; }
            .article-main { box-shadow: none; padding: 0; }
            .article-header { background: #fff; padding: 20px 0; }
            .article-title { color: #000; }
            .article-meta { color: #666; }
        }

/* roulang page: category1 */
:root {
            --primary: #e8a832;
            --primary-dark: #d4941f;
            --primary-light: #f5c85a;
            --secondary: #1e2a4a;
            --secondary-light: #2a3a5e;
            --accent: #ff6b35;
            --bg-dark: #0f1724;
            --bg-card: #1a2640;
            --bg-section: #141e32;
            --text-light: #f0f4f8;
            --text-muted: #94a3b8;
            --text-dark: #c8d2e0;
            --border-color: rgba(232, 168, 50, 0.2);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 16px 48px rgba(232, 168, 50, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media(max-width:768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* sidebar layout */
        .app-layout {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: 240px;
            background: var(--bg-card);
            border-right: 1px solid var(--border-light);
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--border-light);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: -0.5px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-item:hover {
            background: rgba(232, 168, 50, 0.08);
            color: var(--text-light);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: rgba(232, 168, 50, 0.12);
            color: var(--primary);
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .nav-divider {
            height: 1px;
            background: var(--border-light);
            margin: 8px 16px;
        }
        .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-muted);
            padding: 8px 16px 4px;
            font-weight: 600;
            opacity: 0.6;
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-light);
            flex-shrink: 0;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .main-content {
            margin-left: 240px;
            flex: 1;
            min-height: 100vh;
            background: var(--bg-dark);
        }
        /* mobile toggle */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1050;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            color: var(--text-light);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--secondary-light);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1035;
        }
        @media(max-width:992px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-toggle {
                display: flex;
            }
            .sidebar-overlay.active {
                display: block;
            }
        }
        @media(min-width:993px) {
            .sidebar-overlay {
                display: none !important;
            }
        }
        /* banner */
        .page-banner {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, var(--bg-card) 0%, var(--secondary) 100%);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 36, 0.8) 0%, rgba(30, 42, 74, 0.6) 100%);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .banner-content h1 span {
            color: var(--primary);
        }
        .banner-content p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }
        .banner-badge {
            display: inline-block;
            background: rgba(232, 168, 50, 0.15);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(232, 168, 50, 0.2);
        }
        @media(max-width:768px) {
            .page-banner {
                padding: 100px 0 48px;
                min-height: 220px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .banner-content p {
                font-size: 1rem;
            }
        }
        /* sections */
        .section-block {
            padding: 72px 0;
        }
        .section-block-alt {
            background: var(--bg-section);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }
        @media(max-width:768px) {
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
        }
        /* cards */
        .card-guide {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: all var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card-guide::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .card-guide:hover {
            border-color: rgba(232, 168, 50, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-guide:hover::before {
            opacity: 1;
        }
        .card-guide-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(232, 168, 50, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .card-guide h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .card-guide p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .card-guide .step-tag {
            display: inline-block;
            background: rgba(232, 168, 50, 0.1);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        /* step list */
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .step-list li {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .step-list li:last-child {
            border-bottom: none;
        }
        .step-num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(232, 168, 50, 0.15);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            margin-top: 2px;
        }
        .step-content h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }
        /* faq */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232, 168, 50, 0.2);
        }
        .faq-question {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-light);
            font-size: 0.98rem;
            gap: 12px;
            user-select: none;
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 20px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        /* cta */
        .cta-block {
            background: linear-gradient(135deg, var(--secondary), var(--bg-card));
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            text-align: center;
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
            z-index: 1;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--bg-dark);
            border: none;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            position: relative;
            z-index: 1;
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 168, 50, 0.35);
            color: var(--bg-dark);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--primary);
            border: 2px solid rgba(232, 168, 50, 0.4);
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            position: relative;
            z-index: 1;
        }
        .btn-outline-custom:hover {
            background: rgba(232, 168, 50, 0.1);
            border-color: var(--primary);
            color: var(--primary-light);
        }
        @media(max-width:768px) {
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h3 {
                font-size: 1.3rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
            .btn-primary-custom {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }
        /* tags */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-item {
            display: inline-block;
            background: rgba(232, 168, 50, 0.08);
            color: var(--text-muted);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .tag-item:hover {
            background: rgba(232, 168, 50, 0.15);
            color: var(--primary);
            border-color: rgba(232, 168, 50, 0.3);
        }
        /* cover cards */
        .cover-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(232, 168, 50, 0.25);
        }
        .cover-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .cover-card-body {
            padding: 18px 20px 20px;
        }
        .cover-card-body h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .cover-card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
        }
        /* safety tips */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
        }
        .safety-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 20px 18px;
            text-align: center;
            transition: all var(--transition);
        }
        .safety-item:hover {
            border-color: rgba(232, 168, 50, 0.2);
            transform: translateY(-2px);
        }
        .safety-item i {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .safety-item h6 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 4px;
        }
        .safety-item p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }
        /* footer */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            padding: 48px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .logo-text-footer {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .logo-text-footer span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            max-width: 320px;
        }
        .footer h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media(max-width:768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media(max-width:480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        /* responsive extras */
        @media(max-width:576px) {
            .banner-content h1 {
                font-size: 1.5rem;
            }
            .card-guide {
                padding: 20px 16px;
            }
            .step-num {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
            }
        }
        /* scrollbar */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }
        .sidebar::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }
        /* misc */
        .text-gold {
            color: var(--primary);
        }
        .bg-gold-soft {
            background: rgba(232, 168, 50, 0.06);
        }
        .gap-section {
            height: 1px;
            background: var(--border-light);
            margin: 0;
        }

/* roulang page: category2 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #eab308;
            --primary-dark: #ca8a04;
            --primary-light: #fef9c3;
            --secondary: #1e293b;
            --accent: #f59e0b;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-light: #f8fafc;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dark: #0f172a;
            --border-color: rgba(234, 179, 8, 0.15);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 16px 48px rgba(234, 179, 8, 0.15);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* ===== 左侧竖向导航 ===== */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--secondary);
            border-right: 1px solid var(--border-color);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 1.5rem 0;
            backdrop-filter: blur(12px);
            overflow-y: auto;
        }

        .sidebar-brand {
            padding: 0 1.25rem 1.5rem;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 1.25rem;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .logo-text span {
            color: var(--text-light);
            font-weight: 300;
        }

        .logo-sub {
            font-size: 0.7rem;
            color: var(--text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-top: 2px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 2px;
            padding: 0 0.75rem;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.65rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            border: none;
            background: transparent;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-item:hover {
            background: rgba(234, 179, 8, 0.08);
            color: var(--primary-light);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: rgba(234, 179, 8, 0.12);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-item.active i {
            color: var(--primary);
        }

        .nav-divider {
            height: 1px;
            background: var(--border-color);
            margin: 0.75rem 1rem;
        }

        .nav-label {
            padding: 0.5rem 1rem 0.25rem;
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* ===== 右侧主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 页面头部 ===== */
        .page-header {
            padding: 1.25rem 2rem;
            background: rgba(15, 23, 42, 0.8);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .page-header-left {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 0.25rem;
        }

        .breadcrumb-custom {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom span {
            color: var(--primary);
        }

        .page-header-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50px;
            padding: 0.4rem 0.4rem 0.4rem 1rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.15);
        }
        .header-search input {
            background: transparent;
            border: none;
            color: var(--text-light);
            outline: none;
            font-size: 0.85rem;
            width: 160px;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search button {
            background: var(--primary);
            border: none;
            color: var(--text-dark);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.85rem;
        }
        .header-search button:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }

        .header-action-btn {
            background: rgba(234, 179, 8, 0.1);
            border: 1px solid var(--border-color);
            color: var(--primary);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .header-action-btn:hover {
            background: var(--primary);
            color: var(--text-dark);
            border-color: var(--primary);
        }

        /* ===== Banner 区 ===== */
        .category-banner {
            position: relative;
            padding: 4rem 2rem;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.7)), url(/assets/images/backpic/back-2.png) center/cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
        }
        .category-banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .category-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
        }
        .category-banner h1 span {
            color: var(--primary);
        }
        .category-banner p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 1.5rem;
        }
        .category-banner .badge-group {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .category-banner .badge-custom {
            background: rgba(234, 179, 8, 0.12);
            border: 1px solid rgba(234, 179, 8, 0.2);
            color: var(--primary);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ===== 通用容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* ===== 板块标题 ===== */
        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 0.5rem;
            letter-spacing: -0.3px;
        }
        .section-title span {
            color: var(--primary);
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 2rem;
        }
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .section-link {
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .section-link:hover {
            gap: 0.7rem;
        }

        /* ===== 游戏分类卡片网格 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(234, 179, 8, 0.3);
        }
        .game-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--secondary);
        }
        .game-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .game-card:hover .game-card-img img {
            transform: scale(1.06);
        }
        .game-card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.7), transparent 60%);
        }
        .game-card-img .badge-top {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: var(--text-dark);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
        }
        .game-card-img .icon-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) scale(0);
            width: 56px;
            height: 56px;
            background: rgba(234, 179, 8, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-dark);
            font-size: 1.4rem;
            transition: var(--transition);
            opacity: 0;
        }
        .game-card:hover .icon-play {
            transform: translate(-50%, -50%) scale(1);
            opacity: 1;
        }
        .game-card-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .game-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 0.4rem;
        }
        .game-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
            line-height: 1.6;
        }
        .game-card-body .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .game-card-body .meta .tag {
            background: rgba(234, 179, 8, 0.08);
            color: var(--primary);
            padding: 0.15rem 0.7rem;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
        }

        /* ===== 特色板块 ===== */
        .feature-section {
            padding: 4rem 2rem;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.5), rgba(15, 23, 42, 0.8));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .feature-item {
            text-align: center;
            padding: 2rem 1.5rem;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .feature-item:hover {
            background: rgba(234, 179, 8, 0.04);
            border-color: rgba(234, 179, 8, 0.2);
            transform: translateY(-4px);
        }
        .feature-item .icon {
            width: 64px;
            height: 64px;
            background: rgba(234, 179, 8, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-item:hover .icon {
            background: var(--primary);
            color: var(--text-dark);
        }
        .feature-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 0.5rem;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 热门游戏列表 ===== */
        .hot-list-section {
            padding: 4rem 2rem;
        }

        .hot-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        .hot-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .hot-item:hover {
            border-color: rgba(234, 179, 8, 0.25);
            background: rgba(30, 41, 59, 0.8);
            transform: translateX(4px);
        }
        .hot-item .rank {
            width: 36px;
            height: 36px;
            background: rgba(234, 179, 8, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .hot-item .rank.top {
            background: var(--primary);
            color: var(--text-dark);
        }
        .hot-item .info {
            flex: 1;
        }
        .hot-item .info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 0.15rem;
        }
        .hot-item .info p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin: 0;
        }
        .hot-item .status {
            font-size: 0.75rem;
            color: #22c55e;
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-shrink: 0;
        }
        .hot-item .status i {
            font-size: 0.5rem;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 4rem 2rem;
            background: linear-gradient(135deg, rgba(234, 179, 8, 0.06), rgba(234, 179, 8, 0.02));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 0.75rem;
        }
        .cta-section h2 span {
            color: var(--primary);
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 2rem;
        }
        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: var(--text-dark);
            border: none;
            padding: 0.8rem 2.4rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--text-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(234, 179, 8, 0.3);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            padding: 0.8rem 2.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn-outline-custom:hover {
            background: rgba(234, 179, 8, 0.1);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 4rem 2rem;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: rgba(234, 179, 8, 0.2);
        }
        .faq-item .question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .faq-item .question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.8rem;
        }
        .faq-item .answer {
            margin-top: 0.75rem;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .answer {
            display: block;
        }
        .faq-item.open .question i {
            transform: rotate(180deg);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: 3rem 2rem 1.5rem;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .logo-text-footer {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.75rem;
        }
        .logo-text-footer span {
            color: var(--text-light);
            font-weight: 300;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.25rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 移动端遮罩 ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            backdrop-filter: blur(4px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hot-list {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                transition: var(--transition);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .hamburger {
                display: block;
            }
            .page-header {
                padding: 1rem 1.25rem;
            }
            .header-search input {
                width: 100px;
            }
            .category-banner {
                padding: 3rem 1.25rem;
            }
            .category-banner h1 {
                font-size: 1.8rem;
            }
            .category-banner p {
                font-size: 0.95rem;
            }
            .game-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .game-card-img {
                height: 160px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .feature-section {
                padding: 2.5rem 1.25rem;
            }
            .hot-list-section {
                padding: 2.5rem 1.25rem;
            }
            .cta-section {
                padding: 2.5rem 1.25rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .faq-section {
                padding: 2.5rem 1.25rem;
            }
            .footer {
                padding: 2rem 1.25rem 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .container-custom {
                padding: 0 1.25rem;
            }
            .page-header-right .header-action-btn {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .category-banner .badge-group {
                gap: 0.3rem;
            }
            .category-banner .badge-custom {
                font-size: 0.7rem;
                padding: 0.2rem 0.7rem;
            }
            .header-search input {
                width: 80px;
                font-size: 0.8rem;
            }
            .breadcrumb-custom {
                font-size: 0.75rem;
            }
            .cta-buttons .btn-primary-custom,
            .cta-buttons .btn-outline-custom {
                padding: 0.6rem 1.6rem;
                font-size: 0.9rem;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(234, 179, 8, 0.2);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(234, 179, 8, 0.4);
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e60012;
            --primary-dark: #b8000e;
            --primary-light: #ff4d4d;
            --secondary: #1a1a2e;
            --accent: #f0c040;
            --bg-dark: #0d0d1a;
            --bg-card: #141428;
            --bg-card-hover: #1c1c3a;
            --bg-body: #0a0a16;
            --text-light: #f0f0f5;
            --text-muted: #9a9ab0;
            --text-soft: #c8c8d8;
            --border-color: #2a2a4a;
            --border-light: rgba(230, 0, 18, 0.2);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 48px rgba(230, 0, 18, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --header-height: 0px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-body);
            color: var(--text-light);
            display: flex;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ===== 左侧竖向导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--secondary);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            overflow-y: auto;
            transition: transform 0.3s ease;
        }
        .sidebar-brand {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--border-color);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            line-height: 1.2;
        }
        .logo-text span {
            color: var(--primary);
        }
        .logo-sub {
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 2px;
            margin-top: 2px;
            text-transform: uppercase;
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-soft);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
            border: none;
            background: transparent;
            cursor: pointer;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-item:hover {
            background: rgba(230, 0, 18, 0.08);
            color: #fff;
        }
        .nav-item:hover i {
            color: var(--primary-light);
        }
        .nav-item.active {
            background: rgba(230, 0, 18, 0.15);
            color: var(--primary-light);
            font-weight: 600;
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .nav-divider {
            height: 1px;
            background: var(--border-color);
            margin: 12px 16px;
        }
        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--text-muted);
            padding: 8px 16px 4px;
            font-weight: 600;
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main-content {
            flex: 1;
            padding: 0;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1400px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .section-title span {
            color: var(--primary);
        }
        .section-sub {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .text-center .section-sub {
            margin-left: auto;
            margin-right: auto;
        }
        .text-center {
            text-align: center;
        }

        /* ===== 横幅 Banner ===== */
        .banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
            overflow: hidden;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .banner .container {
            position: relative;
            z-index: 2;
        }
        .banner h1 {
            font-size: 42px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .banner h1 span {
            color: var(--primary);
        }
        .banner p {
            font-size: 18px;
            color: var(--text-soft);
            max-width: 600px;
            margin-bottom: 0;
            line-height: 1.7;
        }
        .banner-badge {
            display: inline-block;
            background: rgba(230, 0, 18, 0.2);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
            border: 1px solid rgba(230, 0, 18, 0.3);
        }

        /* ===== 等级卡片 ===== */
        .level-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 10px;
        }
        .level-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .level-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0.4;
            transition: var(--transition);
        }
        .level-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            background: var(--bg-card-hover);
        }
        .level-card:hover::before {
            opacity: 1;
        }
        .level-icon {
            font-size: 40px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .level-card h4 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .level-card .level-tag {
            display: inline-block;
            background: rgba(240, 192, 64, 0.15);
            color: var(--accent);
            padding: 2px 14px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .level-card ul {
            text-align: left;
            margin-top: 12px;
        }
        .level-card ul li {
            font-size: 14px;
            color: var(--text-soft);
            padding: 4px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .level-card ul li i {
            color: var(--primary);
            font-size: 10px;
        }
        .level-highlight {
            border-color: var(--primary);
            box-shadow: 0 0 30px rgba(230, 0, 18, 0.08);
        }
        .level-highlight::before {
            opacity: 1;
            background: var(--accent);
        }
        .level-highlight .level-tag {
            background: rgba(230, 0, 18, 0.2);
            color: var(--primary-light);
        }

        /* ===== 特权卡片 ===== */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .benefit-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            text-align: center;
        }
        .benefit-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-light);
        }
        .benefit-card .benefit-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
            background: rgba(230, 0, 18, 0.1);
            width: 64px;
            height: 64px;
            line-height: 64px;
            border-radius: 50%;
            transition: var(--transition);
        }
        .benefit-card:hover .benefit-icon {
            background: rgba(230, 0, 18, 0.2);
            transform: scale(1.05);
        }
        .benefit-card h5 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .benefit-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 图文区块 ===== */
        .feature-row {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .feature-row.reverse {
            flex-direction: row-reverse;
        }
        .feature-image {
            flex: 1 1 400px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .feature-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-image:hover img {
            transform: scale(1.03);
        }
        .feature-text {
            flex: 1 1 380px;
        }
        .feature-text h3 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .feature-text h3 span {
            color: var(--primary);
        }
        .feature-text p {
            font-size: 16px;
            color: var(--text-soft);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-text .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .feature-text .tag-list .tag {
            background: rgba(230, 0, 18, 0.1);
            color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            border: 1px solid rgba(230, 0, 18, 0.2);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            margin-top: 10px;
        }
        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-number span {
            font-size: 18px;
            color: var(--text-muted);
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== 常见问题 FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-muted);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-soft);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), var(--bg-dark));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section p {
            font-size: 17px;
            color: var(--text-soft);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 0, 18, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border: 2px solid var(--border-color);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 18px;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge-tag {
            display: inline-block;
            background: rgba(230, 0, 18, 0.1);
            color: var(--primary-light);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            border: 1px solid rgba(230, 0, 18, 0.2);
        }
        .badge-accent {
            background: rgba(240, 192, 64, 0.15);
            color: var(--accent);
            border-color: rgba(240, 192, 64, 0.3);
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin: 16px 0 24px;
        }
        .divider.center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text-footer {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .footer-brand .logo-text-footer span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 移动端菜单按钮 ===== */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1060;
            background: var(--secondary);
            border: 1px solid var(--border-color);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
        }
        .mobile-toggle:hover {
            background: var(--primary);
            border-color: var(--primary);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .banner h1 {
                font-size: 34px;
            }
            .section-title {
                font-size: 28px;
            }
            .feature-row {
                flex-direction: column !important;
                gap: 24px;
            }
            .feature-image img {
                height: 240px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }
            .mobile-toggle {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .banner {
                padding: 80px 0 60px;
            }
            .banner h1 {
                font-size: 28px;
            }
            .banner p {
                font-size: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-sub {
                font-size: 15px;
            }
            .section-card {
                padding: 28px 20px;
            }
            .level-grid {
                grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
                gap: 14px;
            }
            .benefit-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h3 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .banner h1 {
                font-size: 24px;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
            .level-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-title {
                font-size: 22px;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: 16px;
            }
            .feature-image img {
                height: 180px;
            }
            .stat-number {
                font-size: 28px;
            }
        }

        /* ===== 辅助 ===== */
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mt-5 {
            margin-top: 40px;
        }
        .mb-3 {
            margin-bottom: 16px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }
        .mb-5 {
            margin-bottom: 40px;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .d-flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .w-100 {
            width: 100%;
        }