/* roulang page: index */
:root {
            --primary: #0f1e3c;
            --primary-light: #1a2c4e;
            --primary-dark: #080f1e;
            --accent: #f0a500;
            --accent-light: #ffc233;
            --accent-dark: #d18f00;
            --bg: #f5f7fc;
            --bg-alt: #eef1f7;
            --bg-white: #ffffff;
            --bg-dark: #0b1424;
            --text: #1a2332;
            --text-light: #5a6a7e;
            --text-muted: #8a9aac;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(15, 30, 60, 0.08);
            --shadow-lg: 0 8px 32px rgba(15, 30, 60, 0.12);
            --shadow-accent: 0 6px 24px rgba(240, 165, 0, 0.25);
            --transition: 0.3s ease;
            --sidebar-width: 260px;
            --section-space: 80px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 侧边栏导航 ===== */
        .sidebar {
            width: var(--sidebar-width);
            background: var(--primary);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 18px;
            box-shadow: 2px 0 20px rgba(8, 15, 30, 0.3);
            transition: transform 0.3s ease;
        }

        .sidebar-logo {
            text-align: center;
            padding: 8px 0 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .sidebar-logo a {
            color: var(--text-white);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.3;
            display: block;
        }

        .sidebar-logo .logo-sub {
            font-size: 12px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: 0.12em;
            display: block;
            margin-top: 4px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            border-left: 3px solid transparent;
            transition: all 0.3s ease;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .sidebar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateX(4px);
        }

        .sidebar-nav .nav-link.active {
            color: #fff;
            background: rgba(240, 165, 0, 0.15);
            border-left-color: var(--accent);
            font-weight: 600;
        }

        .sidebar-footer {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 20px;
        }

        .sidebar-footer p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
            line-height: 1.6;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.3s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 内容区 ===== */
        .content-area {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            background: linear-gradient(135deg, rgba(8, 15, 30, 0.93), rgba(20, 35, 60, 0.85)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 100px 24px 80px;
            position: relative;
            color: var(--text-white);
        }

        .hero-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .hero-content .hero-tagline {
            display: inline-block;
            background: rgba(240, 165, 0, 0.2);
            border: 1px solid rgba(240, 165, 0, 0.4);
            color: var(--accent-light);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 24px;
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .hero-content .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: var(--shadow-accent);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(240, 165, 0, 0.35);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
        }

        .hero-data-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            padding: 30px;
            width: 100%;
            max-width: 360px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            text-align: center;
        }

        .hero-data-card .data-item {
            padding: 12px 8px;
        }

        .hero-data-card .data-number {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent-light);
            display: block;
            line-height: 1.2;
        }

        .hero-data-card .data-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-space) 24px;
        }

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

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

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: rgba(240, 165, 0, 0.15);
            color: var(--accent-dark);
            padding: 5px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        .section-dark .section-head h2 {
            color: #fff;
        }

        .section-dark .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 核心特点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all 0.4s ease;
            text-align: center;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 26px;
            background: linear-gradient(135deg, rgba(240, 165, 0, 0.15), rgba(240, 165, 0, 0.05));
            color: var(--accent-dark);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 分类入口 ===== */
        .category-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 340px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
            color: #fff;
            box-shadow: var(--shadow);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .category-card .category-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 15, 30, 0.1) 0%, rgba(8, 15, 30, 0.75) 70%, rgba(8, 15, 30, 0.9) 100%);
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }

        .category-card .category-tag {
            align-self: flex-start;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .category-card h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .category-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 18px;
        }

        .category-card .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-light);
            transition: gap 0.3s ease;
        }

        .category-card .category-link:hover {
            gap: 12px;
            color: var(--accent);
        }

        /* ===== 最新资讯 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            transition: all 0.4s ease;
        }

        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(240, 165, 0, 0.3);
        }

        .news-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
        }

        .news-tag {
            background: rgba(240, 165, 0, 0.15);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

        .news-card:hover .news-read-more {
            gap: 10px;
        }

        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        .empty-state i {
            font-size: 40px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .empty-state p {
            color: var(--text-light);
            font-size: 16px;
        }

        /* ===== 使用流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .process-step {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 52px;
            right: -15px;
            width: 30px;
            height: 2px;
            background: linear-gradient(to right, var(--accent), transparent);
        }

        .process-step:last-child::after {
            display: none;
        }

        .step-number {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 8px 24px rgba(15, 30, 60, 0.25);
            position: relative;
            z-index: 1;
        }

        .step-number i {
            font-size: 24px;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 平台优势 / 数据 ===== */
        .stats-section {
            background: linear-gradient(135deg, rgba(8, 15, 30, 0.94), rgba(15, 30, 60, 0.88)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
            padding: 70px 24px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            backdrop-filter: blur(4px);
            transition: background 0.3s ease;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .stat-item .stat-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .stat-item .stat-number {
            font-size: 34px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(240, 165, 0, 0.3);
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            transition: color 0.3s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--accent);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item[open] summary {
            color: var(--accent-dark);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 24px;
            text-align: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.15), transparent 70%);
            top: -80px;
            right: -80px;
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06), transparent 70%);
            bottom: -60px;
            left: -60px;
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
        }

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

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 50px 24px 20px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            padding: 5px 0;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-step::after {
                display: none;
            }

            .hero-inner {
                grid-template-columns: 1fr;
            }

            .hero-visual {
                display: none;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .section-head h2 {
                font-size: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 50px;
            }

            .sidebar {
                width: 100%;
                height: auto;
                position: relative;
                flex-direction: row;
                flex-wrap: wrap;
                align-items: center;
                padding: 14px 16px;
                box-shadow: 0 2px 12px rgba(8, 15, 30, 0.2);
            }

            .sidebar-logo {
                margin: 0;
                padding: 0;
                border-bottom: none;
                text-align: left;
            }

            .sidebar-logo a {
                font-size: 18px;
            }

            .sidebar-logo .logo-sub {
                font-size: 10px;
            }

            .nav-toggle {
                display: block;
                margin-left: auto;
            }

            .sidebar-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 12px;
            }

            .sidebar-nav.open {
                display: flex;
            }

            .sidebar-nav .nav-link {
                border-left: none;
                border-bottom: 2px solid transparent;
            }

            .sidebar-nav .nav-link.active {
                border-bottom-color: var(--accent);
                border-left: none;
            }

            .sidebar-footer {
                display: none;
            }

            .content-area {
                margin-left: 0;
            }

            .hero {
                padding: 60px 20px 50px;
            }

            .hero-content h1 {
                font-size: 30px;
            }

            .hero-content .hero-subtitle {
                font-size: 15px;
            }

            .category-cards {
                grid-template-columns: 1fr;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-buttons .btn {
                width: 100%;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .category-card {
                min-height: 260px;
            }

            .category-card .category-overlay {
                padding: 24px;
            }
        }

        @media (max-width: 380px) {
            .hero-data-card {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 焦点可见性 ===== */
        .btn:focus-visible,
        .nav-link:focus-visible,
        .faq-item summary:focus-visible,
        .nav-toggle:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-content {
            animation: fadeInUp 0.8s ease;
        }

        .category-card:nth-child(1) {
            animation: fadeInUp 0.6s ease 0.1s both;
        }

        .category-card:nth-child(2) {
            animation: fadeInUp 0.6s ease 0.2s both;
        }

/* roulang page: article */
:root {
            --primary: #1a56db;
            --primary-dark: #1e40af;
            --primary-light: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f1f5f9;
            --card: #ffffff;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
            --sidebar-width: 260px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

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

        .site-wrapper {
            display: flex;
            min-height: 100vh;
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--card);
            border-right: 1px solid var(--border);
            padding: 32px 20px 24px;
            display: flex;
            flex-direction: column;
            z-index: 100;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.04);
        }

        .sidebar-brand {
            margin-bottom: 40px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
        }

        .brand-name {
            display: block;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: 0.5px;
        }

        .brand-tag {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 1px;
            margin-top: 2px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
        }

        .nav-link.active:hover {
            background: var(--primary-dark);
        }

        .sidebar-foot {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }

        .side-info {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 6px 0;
        }

        .side-info i {
            color: var(--primary);
            font-size: 14px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.4);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
        }

        .article-hero {
            background: linear-gradient(135deg, var(--primary-light) 0%, rgba(255, 255, 255, 0.9) 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

        .breadcrumb a:hover {
            text-decoration: underline;
        }

        .breadcrumb .current {
            color: var(--text);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 18px;
            max-width: 860px;
            letter-spacing: 0.3px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.6);
            padding: 5px 12px;
            border-radius: 20px;
            border: 1px solid var(--border);
        }

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

        .article-section {
            padding: 40px 0;
        }

        .article-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: #334155;
        }

        .article-content p {
            margin-bottom: 20px;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 12px;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 20px 0 10px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 24px;
            padding: 0;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow);
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 24px 0;
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text);
            font-style: italic;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
        }

        .article-content a:hover {
            color: var(--primary-dark);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 15px;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content table th {
            background: var(--primary-light);
            font-weight: 600;
        }

        .not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: block;
        }

        .not-found h2 {
            font-size: 26px;
            color: var(--text);
            margin-bottom: 10px;
        }

        .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .cta-section {
            padding: 24px 0 48px;
        }

        .cta-banner {
            border-radius: var(--radius);
            padding: 56px 48px;
            background-image: linear-gradient(rgba(15, 23, 42, 0.75), rgba(15, 23, 42, 0.75)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-section {
            padding: 48px 0 56px;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-title {
            text-align: center;
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 36px;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .faq-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .faq-item h3 i {
            color: var(--primary);
            font-size: 14px;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .related-section {
            padding: 56px 0;
            background: var(--bg);
        }

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

        .related-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: block;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 20px 24px;
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            padding: 3px 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            padding-top: 20px;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }
            .sidebar {
                padding: 24px 14px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 17px;
            }
            .brand-name {
                font-size: 16px;
            }
            .brand-tag {
                font-size: 11px;
            }
            .nav-link {
                padding: 10px 12px;
                font-size: 14px;
            }
            .article-hero h1 {
                font-size: 28px;
            }
            .article-card {
                padding: 32px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-wrapper {
                display: block;
            }
            .sidebar {
                position: relative;
                width: 100%;
                height: auto;
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 16px 16px 12px;
                flex-direction: row;
                flex-wrap: wrap;
                align-items: center;
                gap: 0;
                box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
            }
            .sidebar-brand {
                margin-bottom: 0;
                margin-right: auto;
            }
            .sidebar-nav {
                display: flex;
                flex-direction: row;
                overflow-x: auto;
                gap: 4px;
                width: 100%;
                margin-top: 12px;
                padding-bottom: 0;
                -webkit-overflow-scrolling: touch;
            }
            .sidebar-nav::-webkit-scrollbar {
                display: none;
            }
            .nav-link {
                padding: 8px 14px;
                font-size: 14px;
                white-space: nowrap;
                flex-shrink: 0;
                border-radius: 8px;
            }
            .sidebar-foot {
                display: none;
            }
            .main-content {
                margin-left: 0;
            }
            .container {
                padding: 0 16px;
            }
            .article-hero {
                padding: 32px 0 28px;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .article-meta {
                gap: 10px;
            }
            .meta-item {
                font-size: 12px;
                padding: 4px 10px;
            }
            .article-card {
                padding: 20px;
                border-radius: 12px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .cta-banner {
                padding: 40px 20px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .cta-banner p {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 0 16px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
            .faq-item {
                padding: 20px;
            }
            .footer-bottom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 20px;
            }
            .article-card {
                padding: 16px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .breadcrumb .current {
                max-width: 140px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .cta-banner {
                padding: 32px 16px;
                border-radius: 12px;
            }
            .cta-banner h2 {
                font-size: 20px;
            }
            .related-card img {
                height: 140px;
            }
            .related-card-body {
                padding: 14px 18px;
            }
            .related-card h3 {
                font-size: 16px;
            }
            .faq-item h3 {
                font-size: 15px;
            }
            .faq-item p {
                font-size: 13px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a2b4c;
            --primary-dark: #0e1a2e;
            --primary-light: #2c4266;
            --accent: #e8602a;
            --accent-dark: #c84a1b;
            --accent-light: #ff7b45;
            --bg: #f6f7fb;
            --surface: #ffffff;
            --text: #1e2937;
            --text-light: #5d6b7e;
            --text-lighter: #8b97a8;
            --border: #e4e8f0;
            --shadow-sm: 0 2px 8px rgba(15, 26, 47, 0.06);
            --shadow-md: 0 6px 20px rgba(15, 26, 47, 0.10);
            --shadow-lg: 0 12px 32px rgba(15, 26, 47, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: all 0.3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }
        ::selection {
            background: rgba(232, 96, 42, 0.18);
        }

        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }

        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .main-content {
            flex: 1;
            margin-left: 270px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg);
        }

        .main-content main {
            flex: 1;
        }

        /* ===== 侧边导航 ===== */
        .sidebar {
            width: 270px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: linear-gradient(180deg, #0e1a2e 0%, #132441 55%, #0a1526 100%);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            box-shadow: 2px 0 18px rgba(10, 18, 32, 0.28);
        }
        .sidebar-header {
            padding: 30px 24px 22px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            width: 44px;
            height: 44px;
            background: var(--accent);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 19px;
            box-shadow: 0 4px 14px rgba(232, 96, 42, 0.4);
        }
        .logo-text-wrap {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
        }
        .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 2px;
        }
        .logo-sub {
            color: rgba(255, 255, 255, 0.55);
            font-size: 12px;
            letter-spacing: 1px;
            margin-top: 2px;
        }
        .menu-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .sidebar-nav {
            padding: 18px 14px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 18px;
            border-radius: 10px;
            color: #a8b3c7;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border-left: 3px solid transparent;
            position: relative;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateX(3px);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(232, 96, 42, 0.14);
            border-left-color: var(--accent);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .sidebar-footer {
            padding: 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .sidebar-support {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #a8b3c7;
            font-size: 13px;
        }
        .sidebar-support i {
            color: var(--accent);
            font-size: 18px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
            border: none;
            line-height: 1.4;
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(232, 96, 42, 0.32);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.65);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: 88px 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 45%;
            color: #fff;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(14, 26, 46, 0.92) 0%, rgba(14, 26, 46, 0.72) 55%, rgba(14, 26, 46, 0.42) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.3s;
        }
        .hero-breadcrumb a:hover {
            color: #fff;
        }
        .hero-breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }
        .page-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .page-hero .hero-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 52px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.18);
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat strong {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
        }
        .hero-stat span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--surface);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(232, 96, 42, 0.1);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 30px;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.65;
        }

        /* ===== 登录方式 ===== */
        .cards-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .login-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .login-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: opacity 0.3s;
        }
        .login-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .login-card:hover::before {
            opacity: 1;
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(26, 43, 76, 0.25);
        }
        .login-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .login-card .card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
            margin-bottom: 18px;
        }
        .login-card .card-feature {
            list-style: none;
            padding: 0;
            margin: 0 0 4px;
        }
        .login-card .card-feature li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            padding: 5px 0;
        }
        .login-card .card-feature li i {
            color: var(--accent);
            font-size: 13px;
            width: 18px;
            text-align: center;
        }
        .card-scene {
            margin-top: 14px;
            display: inline-block;
            background: #f1f3f8;
            color: var(--text-light);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
        }

        /* ===== 登录流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
            position: relative;
        }
        .step-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(26, 43, 76, 0.2);
        }
        .step-item:nth-child(2) .step-num {
            background: #2d6a4f;
        }
        .step-item:nth-child(3) .step-num {
            background: #b3541e;
        }
        .step-item:nth-child(4) .step-num {
            background: #4a5fc1;
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
        }

        /* ===== 安全区块 ===== */
        .security-section {
            background: linear-gradient(135deg, #0e1a2e 0%, #162b4c 65%, #1b3458 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .security-section .section-tag {
            background: rgba(232, 96, 42, 0.2);
            color: var(--accent-light);
        }
        .security-section .section-head h2 {
            color: #fff;
        }
        .security-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .security-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
        }
        .security-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .sec-icon {
            width: 50px;
            height: 50px;
            background: rgba(232, 96, 42, 0.18);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-light);
            margin-bottom: 18px;
        }
        .security-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .security-card p {
            font-size: 14px;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.72);
        }

        /* ===== 常见问题列表 ===== */
        .problem-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }
        .problem-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 26px;
            display: flex;
            gap: 16px;
            transition: var(--transition);
        }
        .problem-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: #d0d6e4;
        }
        .problem-item .problem-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(232, 96, 42, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent);
        }
        .problem-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .problem-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
        }

        /* ===== 资讯卡片 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .news-img-wrap {
            position: relative;
            overflow: hidden;
            height: 185px;
        }
        .news-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-img-wrap img {
            transform: scale(1.04);
        }
        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(14, 26, 46, 0.85);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        .news-body {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-lighter);
        }
        .news-meta i {
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color 0.3s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--text-lighter);
            font-size: 13px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item[open] summary {
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 16px;
        }
        .faq-answer p {
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, #1e3a5f 100%);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            color: #fff;
            flex-wrap: wrap;
            box-shadow: var(--shadow-lg);
        }
        .cta-box h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0e1a2e;
            color: #8b97a8;
            padding: 50px 48px 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 0.8fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            max-width: 360px;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-links a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: #8b97a8;
            transition: color 0.3s, padding-left 0.3s;
        }
        .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 5px;
        }
        .footer-contact p {
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .container {
                padding: 0 32px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 1024px) and (min-width: 993px) {
            .sidebar {
                width: 230px;
            }
            .main-content {
                margin-left: 230px;
            }
            .site-footer {
                padding: 40px 28px 20px;
            }
            .container {
                padding: 0 28px;
            }
            .cards-grid-3 {
                gap: 18px;
            }
        }

        @media (max-width: 992px) {
            .app-wrapper {
                flex-direction: column;
            }
            .sidebar {
                position: relative;
                width: 100%;
                height: auto;
                box-shadow: 0 2px 14px rgba(10, 18, 32, 0.25);
            }
            .sidebar-header {
                padding: 16px 20px;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .sidebar-nav {
                display: none;
                padding: 10px 16px 16px;
            }
            .sidebar-nav.open {
                display: flex;
            }
            .sidebar-footer {
                display: none;
            }
            .main-content {
                margin-left: 0;
            }
            .site-footer {
                padding: 40px 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 46px 0;
            }
            .section-head {
                margin-bottom: 34px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .page-hero {
                padding: 54px 0;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 34px;
            }
            .cards-grid-3,
            .steps-grid,
            .security-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }
            .problem-list {
                grid-template-columns: 1fr;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-box .btn {
                width: 100%;
            }
            .site-footer {
                padding: 32px 20px 18px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .login-card {
                padding: 24px 20px;
            }
            .step-item {
                padding: 24px 18px;
            }
            .security-card {
                padding: 22px 18px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat strong {
                font-size: 22px;
            }
            .section-head h2 {
                font-size: 21px;
            }
            .brand-logo .logo-text {
                font-size: 18px;
            }
            .logo-sub {
                font-size: 10px;
            }
            .footer-grid {
                gap: 22px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-soft: #fbbf24;
            --bg: #f1f5f9;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-mute: #94a3b8;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 8px 32px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
            --sidebar-width: 260px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

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

        ul,
        ol {
            list-style: none;
        }

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
        }

        input {
            font-family: inherit;
        }

        /* ======== 侧边导航 ======== */
        .sidebar {
            width: var(--sidebar-width);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
            padding: 28px 20px;
            display: flex;
            flex-direction: column;
            z-index: 1000;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px;
            margin-bottom: 10px;
        }

        .brand-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--accent), var(--accent-soft));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0f172a;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
            flex-shrink: 0;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 1px;
            line-height: 1.3;
        }

        .brand-name span {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 2px;
        }

        .sidebar-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 16px 8px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .sidebar-nav .nav-link i {
            width: 22px;
            text-align: center;
            font-size: 16px;
        }

        .sidebar-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            transform: translateX(4px);
        }

        .sidebar-nav .nav-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .sidebar-nav .nav-link.active {
            background: linear-gradient(135deg, var(--accent), var(--accent-soft));
            color: #0f172a;
            font-weight: 700;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
        }

        .sidebar-footer {
            margin-top: auto;
            padding: 16px 8px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar-footer p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            font-weight: 600;
            line-height: 1.5;
        }

        .sidebar-footer span {
            color: rgba(255, 255, 255, 0.35);
            font-size: 12px;
            display: block;
            margin-top: 4px;
        }

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

        .main-content {
            flex: 1;
            padding: 48px 56px;
            max-width: 1400px;
            width: 100%;
        }

        /* ======== 页面 Banner ======== */
        .page-hero {
            position: relative;
            padding: 72px 56px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #ffffff;
            overflow: hidden;
            border-radius: 0 0 24px 24px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.2);
            border: 1px solid rgba(245, 158, 11, 0.4);
            color: #fbbf24;
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-tag i {
            font-size: 14px;
        }

        .page-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .page-hero h1 em {
            font-style: normal;
            color: #fbbf24;
        }

        .page-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 28px;
            max-width: 640px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ======== 按钮 ======== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            line-height: 1.4;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-soft));
            color: #0f172a;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.4);
        }

        .btn-accent:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.12);
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-outline:active {
            background: rgba(255, 255, 255, 0.28);
        }

        .btn-ghost {
            background: transparent;
            color: var(--text);
            border: 1px solid var(--border);
        }

        .btn-ghost:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ======== 板块通用 ======== */
        .section {
            margin-bottom: 72px;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
            margin-bottom: 6px;
        }

        .section-eyebrow::before {
            content: "";
            width: 16px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
            border-radius: 2px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
        }

        .section-title em {
            font-style: normal;
            color: var(--accent);
        }

        .section-desc {
            color: var(--text-light);
            font-size: 15px;
            max-width: 560px;
            line-height: 1.8;
        }

        /* ======== 特性卡片 ======== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.3);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.05));
            border: 1px solid rgba(245, 158, 11, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ======== 资讯卡片 ======== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.25);
        }

        .news-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

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

        .news-card:hover .news-cover img {
            transform: scale(1.05);
        }

        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(245, 158, 11, 0.95);
            color: #0f172a;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 100px;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .news-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-body h3 {
            font-size: 17px;
            line-height: 1.5;
            font-weight: 700;
            margin-bottom: 10px;
            cursor: pointer;
            transition: color 0.2s;
        }

        .news-body h3:hover {
            color: var(--accent-hover);
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-mute);
        }

        .news-meta i {
            margin-right: 4px;
        }

        /* ======== 热门赛事 ======== */
        .hot-list {
            display: grid;
            gap: 16px;
        }

        .hot-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px 24px;
            transition: var(--transition);
        }

        .hot-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateX(6px);
        }

        .hot-rank {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            flex-shrink: 0;
        }

        .hot-info {
            flex: 1;
            min-width: 0;
        }

        .hot-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .hot-info p {
            font-size: 13px;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hot-bar {
            flex: 1;
            max-width: 240px;
            height: 8px;
            background: #e8edf3;
            border-radius: 100px;
            overflow: hidden;
        }

        .hot-bar span {
            display: block;
            height: 100%;
            border-radius: 100px;
            background: linear-gradient(90deg, var(--accent), var(--accent-soft));
        }

        .hot-value {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            min-width: 48px;
            text-align: right;
        }

        /* ======== 数据统计 ======== */
        .stats-section {
            background: linear-gradient(135deg, #0f172a, #1e293b);
            border-radius: 24px;
            padding: 56px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .stats-section::after {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: rgba(245, 158, 11, 0.15);
            border-radius: 50%;
            filter: blur(60px);
        }

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

        .stat-item .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: #fbbf24;
            line-height: 1.2;
        }

        .stat-item .stat-num small {
            font-size: 20px;
            font-weight: 700;
            margin-left: 2px;
        }

        .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            margin-top: 8px;
        }

        /* ======== 流程步骤 ======== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .step-num {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 56px;
            font-weight: 800;
            color: rgba(245, 158, 11, 0.15);
            line-height: 1;
            font-style: italic;
        }

        .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ======== FAQ ======== */
        .faq-list {
            display: grid;
            gap: 14px;
            max-width: 900px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.3);
        }

        .faq-item summary {
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
            list-style: none;
            transition: background 0.2s;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--accent);
            flex-shrink: 0;
        }

        .faq-item[open] summary {
            background: rgba(245, 158, 11, 0.04);
        }

        .faq-item .faq-body {
            padding: 0 28px 22px 56px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ======== CTA ======== */
        .cta-section {
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.04));
            border: 1px solid rgba(245, 158, 11, 0.25);
            border-radius: 24px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-title {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .cta-title em {
            font-style: normal;
            color: var(--accent-hover);
        }

        .cta-desc {
            color: var(--text-light);
            font-size: 15px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ======== 页脚 ======== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.6);
            padding: 48px 56px 24px;
            margin-top: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 20px;
            margin-bottom: 12px;
        }

        .footer-brand p,
        .footer-contact p {
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: #fbbf24;
        }

        .footer-links a:focus-visible {
            outline: 2px solid #fbbf24;
            outline-offset: 2px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ======== 响应式 ======== */
        @media (max-width: 1024px) {
            .sidebar {
                width: 100%;
                position: sticky;
                top: 0;
                flex-direction: row;
                align-items: center;
                padding: 12px 20px;
                height: auto;
                box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
            }

            .brand {
                margin-bottom: 0;
                margin-right: 20px;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }

            .brand-name {
                font-size: 17px;
            }

            .brand-name span {
                display: none;
            }

            .sidebar-divider,
            .sidebar-footer {
                display: none;
            }

            .sidebar-nav {
                flex-direction: row;
                gap: 8px;
                overflow-x: auto;
                flex-wrap: nowrap;
                scrollbar-width: none;
                flex: 1;
            }

            .sidebar-nav::-webkit-scrollbar {
                display: none;
            }

            .sidebar-nav .nav-link {
                white-space: nowrap;
                padding: 10px 16px;
                font-size: 14px;
            }

            .sidebar-nav .nav-link:hover {
                transform: none;
            }

            .main-wrapper {
                margin-left: 0;
            }

            .main-content {
                padding: 36px;
            }

            .page-hero {
                padding: 60px 40px;
                border-radius: 0;
            }

            .feature-grid,
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }

            .stats-section {
                padding: 44px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .site-footer {
                padding: 40px 36px 24px;
            }

            .cta-section {
                padding: 36px 32px;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 48px 24px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

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

            .main-content {
                padding: 24px 20px;
            }

            .section {
                margin-bottom: 56px;
            }

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

            .section-desc {
                font-size: 14px;
            }

            .feature-grid,
            .news-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .feature-card,
            .news-card,
            .step-card {
                padding: 24px;
            }

            .hot-item {
                flex-wrap: wrap;
                padding: 16px 18px;
                gap: 14px;
            }

            .hot-bar {
                max-width: 100%;
                flex-basis: 100%;
                order: 4;
            }

            .hot-value {
                order: 3;
            }

            .cta-section {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .site-footer {
                padding: 40px 24px 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .sidebar {
                padding: 10px 12px;
            }

            .brand {
                margin-right: 12px;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }

            .brand-name {
                font-size: 14px;
            }

            .sidebar-nav .nav-link {
                font-size: 12px;
                padding: 8px 10px;
                gap: 6px;
            }

            .sidebar-nav .nav-link i {
                font-size: 13px;
                width: 18px;
            }

            .page-hero {
                padding: 40px 18px;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .page-hero p {
                font-size: 14px;
            }

            .hero-btns .btn {
                width: 100%;
            }

            .stat-item .stat-num {
                font-size: 32px;
            }

            .stat-item .stat-num small {
                font-size: 16px;
            }

            .step-num {
                font-size: 40px;
            }

            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-item .faq-body {
                padding: 0 18px 18px 44px;
                font-size: 14px;
            }

            .cta-title {
                font-size: 22px;
            }

            .cta-actions .btn {
                width: 100%;
            }
        }