/* roulang page: index */
:root {
            --primary: #0D7A73;
            --primary-dark: #0A3F3B;
            --accent: #FF6B4A;
            --bg: #F7FAF9;
            --card: #FFFFFF;
            --text: #182A2A;
            --text-muted: #5A6B6A;
            --border: #E4EBE9;
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* 左侧导航 */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 220px;
            background: var(--primary-dark);
            z-index: 50;
            padding: 28px 20px;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 20px;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(255, 107, 74, 0.3);
        }

        .brand-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1px;
            white-space: nowrap;
        }

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

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s ease;
            border-left: 4px solid transparent;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 14px;
            opacity: 0.85;
        }

        .sidebar-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .sidebar-nav .nav-link.active {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-weight: 700;
            border-left-color: var(--accent);
        }

        .sidebar-cta {
            display: block;
            text-align: center;
            background: var(--accent);
            color: #fff;
            border-radius: 12px;
            padding: 12px 20px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.25s ease;
        }

        .sidebar-cta:hover {
            background: #f5573a;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 107, 74, 0.4);
        }

        /* 主内容 */
        .main-content {
            margin-left: 220px;
            min-height: 100vh;
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--primary-dark);
            z-index: 60;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-header .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-header .brand-text {
            font-size: 17px;
        }

        .menu-toggle {
            background: transparent;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--primary-dark);
            z-index: 55;
            padding: 16px 24px 24px;
            flex-direction: column;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 12px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            transition: all 0.2s;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .mobile-menu a i {
            width: 20px;
            text-align: center;
            opacity: 0.85;
        }

        .mobile-menu .mobile-cta {
            margin-top: 12px;
            text-align: center;
            background: var(--accent);
            border-radius: 12px;
            padding: 12px;
            font-weight: 600;
            color: #fff !important;
            border: none;
        }

        .mobile-menu .mobile-cta:hover {
            background: #f5573a;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 580px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 40%, rgba(255, 255, 255, 0.75) 100%);
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 107, 74, 0.1), transparent 70%);
            right: -60px;
            top: -60px;
            z-index: 0;
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            width: 100%;
            padding: 100px 32px 60px;
        }

        .hero-content {
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(13, 122, 115, 0.1);
            color: var(--primary);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 50px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--primary-dark);
            letter-spacing: -1px;
            margin-bottom: 18px;
        }

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 32px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            outline: none;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 4px 20px rgba(13, 122, 115, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(13, 122, 115, 0.35);
            filter: brightness(1.05);
        }

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

        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(13, 122, 115, 0.08);
            transform: translateY(-2px);
        }

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

        .hero-stats {
            display: flex;
            gap: 20px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .stat-card {
            background: var(--card);
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            padding: 20px 28px;
            text-align: center;
            min-width: 140px;
            transition: all 0.3s ease;
            border: 1px solid rgba(228, 235, 233, 0.6);
        }

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

        .stat-num {
            display: block;
            font-size: 30px;
            font-weight: 800;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
            font-weight: 500;
        }

        /* 板块通用 */
        .section {
            padding: 80px 0;
        }

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

        .section-header .section-tag {
            display: inline-block;
            background: rgba(13, 122, 115, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 16px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto;
        }

        /* 最新动态 */
        .news-section {
            background: var(--bg);
        }

        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .news-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: gap 0.2s;
        }

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

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

        .news-card {
            background: var(--card);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(13, 122, 115, 0.2);
        }

        .news-card-img {
            height: 160px;
            background: rgba(13, 122, 115, 0.08);
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.04);
        }

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

        .news-tag {
            align-self: flex-start;
            background: rgba(13, 122, 115, 0.1);
            color: var(--primary);
            border-radius: 6px;
            padding: 3px 10px;
            font-size: 11px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .news-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #9CA3AF;
        }

        .news-meta i {
            color: var(--primary);
            font-size: 13px;
            transition: transform 0.2s;
        }

        .news-card:hover .news-meta i {
            transform: translateX(4px);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: var(--card);
            border-radius: 20px;
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* 优惠阶梯 */
        .tiers-section {
            background: var(--card);
            border-radius: 40px;
            margin: 0 24px;
            padding: 80px 40px;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.02);
        }

        .tiers-grid {
            display: flex;
            gap: 28px;
            align-items: stretch;
            justify-content: center;
            margin-top: 40px;
        }

        .tier-card {
            flex: 1;
            max-width: 300px;
            background: var(--bg);
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            padding: 36px 28px 28px;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .tier-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
        }

        .tier-card.tier-1::before {
            background: linear-gradient(90deg, var(--primary), #35a89b);
        }

        .tier-card.tier-2 {
            transform: scale(1.05);
            box-shadow: var(--shadow-lg);
            background: var(--card);
            z-index: 1;
        }

        .tier-card.tier-2::before {
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .tier-card.tier-3::before {
            background: linear-gradient(90deg, var(--accent), #ff9d6a);
        }

        .tier-card:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-lg);
        }

        .tier-card.tier-2:hover {
            transform: scale(1.07);
        }

        .tier-number {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .tier-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
        }

        .tier-card ul {
            flex: 1;
            margin-bottom: 20px;
        }

        .tier-card ul li {
            position: relative;
            padding-left: 22px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .tier-card ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 7px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
        }

        .tier-card.tier-2 ul li::before {
            background: var(--accent);
        }

        .tier-cta {
            display: block;
            text-align: center;
            padding: 12px 20px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.25s;
        }

        .tier-1 .tier-cta {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .tier-1 .tier-cta:hover {
            background: rgba(13, 122, 115, 0.08);
        }

        .tier-2 .tier-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 4px 16px rgba(13, 122, 115, 0.25);
        }

        .tier-2 .tier-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 122, 115, 0.35);
        }

        .tier-3 .tier-cta {
            background: transparent;
            border: 1.5px solid var(--accent);
            color: var(--accent);
        }

        .tier-3 .tier-cta:hover {
            background: rgba(255, 107, 74, 0.08);
        }

        /* 套餐对比 */
        .compare-section {
            background: var(--bg);
        }

        .compare-wrap {
            overflow-x: auto;
            border-radius: 20px;
            background: var(--card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .compare-table th,
        .compare-table td {
            padding: 16px 24px;
            text-align: center;
            font-size: 14px;
            border-bottom: 1px solid var(--border);
            line-height: 1.6;
        }

        .compare-table th {
            font-size: 15px;
            font-weight: 700;
            background: rgba(13, 122, 115, 0.06);
            color: var(--primary-dark);
        }

        .compare-table td:first-child,
        .compare-table th:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
            width: 180px;
            background: var(--bg);
        }

        .compare-table tbody tr:hover {
            background: rgba(13, 122, 115, 0.03);
        }

        .compare-table .recommend-col {
            background: rgba(13, 122, 115, 0.08);
            position: relative;
        }

        .compare-table .recommend-col th {
            background: rgba(13, 122, 115, 0.12);
            color: var(--primary);
            font-weight: 800;
        }

        .recommend-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            border-radius: 999px;
            padding: 2px 12px;
            margin-left: 6px;
            vertical-align: middle;
        }

        .compare-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 24px;
        }

        /* 限时入口 */
        .limited-section {
            padding: 60px 32px;
        }

        .limited-box {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 24px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .limited-box::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            right: -80px;
            bottom: -80px;
        }

        .limited-left {
            flex: 1;
            min-width: 260px;
            position: relative;
            z-index: 1;
        }

        .limited-left h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .limited-left p {
            font-size: 14px;
            opacity: 0.85;
        }

        .countdown {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .countdown-box {
            background: #fff;
            color: var(--primary);
            border-radius: 12px;
            padding: 10px 16px;
            min-width: 56px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .countdown-box .num {
            font-size: 24px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            display: block;
            line-height: 1.2;
        }

        .countdown-box .label {
            font-size: 11px;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }

        .limited-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            border-radius: 12px;
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 700;
            transition: all 0.25s;
            position: relative;
            z-index: 1;
        }

        .limited-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

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

        /* FAQ */
        .faq-section {
            background: var(--card);
            padding: 80px 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
            background: var(--bg);
        }

        .faq-item:hover {
            border-color: rgba(13, 122, 115, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: color 0.2s;
        }

        .faq-question i {
            color: var(--text-muted);
            transition: transform 0.3s, color 0.2s;
            font-size: 14px;
        }

        .faq-item.open .faq-question {
            color: var(--primary);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* 咨询表单 */
        .contact-section {
            background: var(--bg);
            padding: 80px 0;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            margin-top: 40px;
        }

        .contact-form-wrap {
            background: var(--card);
            border-radius: 20px;
            padding: 36px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .contact-form-wrap h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--primary-dark);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: #fff;
            font-size: 14px;
            color: var(--text);
            outline: none;
            transition: all 0.25s;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 122, 115, 0.1);
        }

        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }

        .form-submit {
            width: 100%;
            padding: 14px 20px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border: none;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.25s;
            margin-top: 8px;
        }

        .form-submit:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(13, 122, 115, 0.3);
            filter: brightness(1.05);
        }

        .form-submit:active {
            transform: translateY(0);
        }

        .contact-info-wrap {
            background: var(--primary-dark);
            border-radius: 20px;
            padding: 36px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .contact-info-wrap h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .contact-info-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .contact-info-item i {
            width: 24px;
            text-align: center;
            color: var(--accent);
            font-size: 16px;
        }

        .contact-info-item:last-child {
            border-bottom: none;
        }

        .qr-placeholder {
            width: 120px;
            height: 120px;
            background: #fff;
            border-radius: 16px;
            margin: 24px auto 16px;
            display: grid;
            grid-template-columns: repeat(8, 1fr);
            grid-template-rows: repeat(8, 1fr);
            gap: 2px;
            padding: 8px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }

        .qr-cell {
            background: #182A2A;
            border-radius: 1px;
        }

        .qr-cell:nth-child(odd) {
            background: #fff;
        }

        .qr-caption {
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
            margin-left: 220px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px 40px;
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 48px;
        }

        .footer-brand-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-top: 16px;
            max-width: 360px;
        }

        .footer-grid h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .footer-links a i {
            font-size: 12px;
            opacity: 0.6;
        }

        .footer-contact-info p {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 12px;
        }

        .footer-contact-info p i {
            width: 18px;
            text-align: center;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            max-width: 1200px;
            margin: 0 auto;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom p {
            padding: 0 32px;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }

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

            .mobile-header {
                display: flex;
            }

            .site-footer {
                margin-left: 0;
            }

            .hero {
                min-height: auto;
                padding-top: 60px;
            }

            .hero .container {
                padding: 80px 20px 50px;
            }

            .hero h1 {
                font-size: 36px;
            }

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

            .tiers-grid {
                flex-wrap: wrap;
                gap: 24px;
            }

            .tier-card {
                flex: 1 1 calc(50% - 12px);
                max-width: none;
            }

            .tier-card.tier-2 {
                transform: none;
            }

            .tier-card.tier-2:hover {
                transform: translateY(-4px);
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .tiers-section {
                margin: 0 0;
                border-radius: 0;
                padding: 60px 24px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 60px 0;
            }

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

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

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

            .hero-buttons .btn {
                width: 100%;
                padding: 14px 20px;
            }

            .hero-stats {
                gap: 12px;
            }

            .stat-card {
                flex: 1;
                min-width: 100px;
                padding: 16px 12px;
            }

            .stat-num {
                font-size: 24px;
            }

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

            .tier-card {
                flex: 1 1 100%;
                max-width: 100%;
            }

            .compare-wrap {
                border-radius: 16px;
            }

            .limited-box {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }

            .countdown {
                justify-content: center;
            }

            .limited-btn {
                width: 100%;
                justify-content: center;
            }

            .contact-form-wrap,
            .contact-info-wrap {
                padding: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 0 20px 32px;
            }

            .footer-bottom p {
                padding: 0 20px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero .container {
                padding: 60px 16px 40px;
            }

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

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

            .stat-card {
                min-width: 90px;
            }

            .stat-num {
                font-size: 20px;
            }

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

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

            .tiers-section {
                padding: 48px 16px;
            }

            .tier-card {
                padding: 24px 20px 20px;
            }

            .countdown-box {
                padding: 8px 12px;
                min-width: 48px;
            }

            .countdown-box .num {
                font-size: 20px;
            }

            .contact-form-wrap,
            .contact-info-wrap {
                padding: 20px;
            }

            .limited-box {
                padding: 28px 20px;
            }

            .limited-left h2 {
                font-size: 22px;
            }
        }

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0D7A73;
            --primary-dark: #0A3F3B;
            --accent: #FF6B4A;
            --bg: #F7FAF9;
            --card-bg: #FFFFFF;
            --text-main: #182A2A;
            --text-sub: #5A6B6A;
            --border: #E4EBE9;
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --gradient-brand: linear-gradient(135deg, #0D7A73 0%, #FF6B4A 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all .3s ease;
        }

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 14px;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ========== 布局骨架 ========== */
        .app-shell {
            min-height: 100vh;
        }

        .content-wrapper {
            margin-left: 220px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
            padding: 40px 32px 60px;
        }

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

        /* ========== 左侧导航 ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 220px;
            height: 100vh;
            background: var(--primary-dark);
            color: #fff;
            display: flex;
            flex-direction: column;
            z-index: 100;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.06);
        }

        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 0 0 24px;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 16px;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--gradient-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 4px 12px rgba(255, 107, 74, 0.25);
            flex-shrink: 0;
        }

        .brand-icon.small {
            width: 34px;
            height: 34px;
            font-size: 13px;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .sidebar-nav {
            flex: 1;
            padding: 0 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            position: relative;
            transition: all .3s ease;
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            opacity: 0.85;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
        }

        .nav-link.active {
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            font-weight: 700;
        }

        .nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }

        .sidebar-cta {
            padding: 0 24px;
        }

        .sidebar-chat-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 12px 16px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            transition: all .3s ease;
            box-shadow: 0 4px 12px rgba(255, 107, 74, 0.25);
        }

        .sidebar-chat-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 107, 74, 0.35);
        }

        /* ========== 移动端顶栏 ========== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 90;
            background: var(--primary-dark);
            height: 60px;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .mobile-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-brand .brand-text {
            font-size: 16px;
        }

        .mobile-menu-toggle {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .3s;
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--primary-dark);
            z-index: 89;
            padding: 12px;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .nav-link {
            color: rgba(255, 255, 255, 0.9);
            padding: 14px 20px;
        }

        .mobile-menu .nav-link.active {
            background: rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-md);
        }

        /* ========== 文章页容器 ========== */
        .article-page {
            max-width: 880px;
            margin: 0 auto;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 32px;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

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

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

        /* ========== 文章头部 ========== */
        .article-header {
            background: linear-gradient(135deg, rgba(13, 122, 115, 0.06) 0%, rgba(255, 107, 74, 0.06) 100%);
            border-radius: 24px;
            padding: 40px 48px;
            margin-bottom: 32px;
            position: relative;
            overflow: hidden;
        }

        .article-header::after {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(13, 122, 115, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--primary-dark);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: var(--text-sub);
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

        .cat-tag {
            background: rgba(13, 122, 115, 0.1);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 12px;
        }

        /* ========== 正文 ========== */
        .article-body {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            margin-bottom: 32px;
        }

        .article-content {
            max-width: 720px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            margin: 48px 0 20px;
            color: var(--primary-dark);
            position: relative;
            padding-left: 18px;
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 5px;
            height: 24px;
            border-radius: 4px;
            background: var(--gradient-brand);
        }

        .article-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--primary-dark);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 24px;
            padding-left: 0;
        }

        .article-content ul li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
        }

        .article-content ul li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--gradient-brand);
        }

        .article-content ol {
            counter-reset: article-ol;
        }

        .article-content ol li {
            position: relative;
            padding-left: 32px;
            margin-bottom: 10px;
            counter-increment: article-ol;
        }

        .article-content ol li::before {
            content: counter(article-ol);
            position: absolute;
            left: 0;
            top: 2px;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(13, 122, 115, 0.10);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(13, 122, 115, 0.06);
            padding: 16px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--text-sub);
            font-style: normal;
        }

        .article-content img {
            border-radius: 16px;
            margin: 32px 0;
            box-shadow: var(--shadow-card);
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(13, 122, 115, 0.4);
            font-weight: 500;
        }

        .article-content a:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        /* ========== 内容未找到 ========== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(13, 122, 115, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 32px;
            color: var(--primary);
        }

        .not-found-box p {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            background: var(--gradient-brand);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(13, 122, 115, 0.25);
            transition: all .3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 122, 115, 0.3);
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(13, 122, 115, 0.2);
        }

        /* ========== 上一篇 / 下一篇 ========== */
        .article-pagination {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 48px;
        }

        .paginate-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 20px 24px;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

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

        .paginate-card.next {
            text-align: right;
        }

        .paginate-label {
            font-size: 12px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .paginate-card.next .paginate-label {
            justify-content: flex-end;
        }

        .paginate-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }

        .paginate-card:hover .paginate-title {
            color: var(--primary);
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            margin-top: 16px;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 24px;
            position: relative;
            padding-left: 18px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            width: 5px;
            height: 22px;
            border-radius: 4px;
            background: var(--gradient-brand);
        }

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

        .related-card {
            background: var(--card-bg);
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 122, 115, 0.3);
        }

        .related-thumb {
            height: 140px;
            overflow: hidden;
            background: rgba(13, 122, 115, 0.08);
            position: relative;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .related-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-body p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .related-arrow {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(13, 122, 115, 0.10);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .3s ease;
            font-size: 12px;
        }

        .related-card:hover .related-arrow {
            background: var(--gradient-brand);
            color: #fff;
            transform: translateX(2px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 24px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px 32px;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
        }

        .footer-brand .sidebar-brand {
            padding: 0;
            border-bottom: none;
            margin-bottom: 16px;
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 12px;
            max-width: 320px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: rgba(255, 255, 255, 0.95);
        }

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

        .footer-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: all .3s;
        }

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

        .footer-links a i {
            font-size: 12px;
            color: var(--accent);
        }

        .footer-contact-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact-info p {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-contact-info p i {
            width: 20px;
            text-align: center;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }

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

            .mobile-header {
                display: flex;
            }

            .main-content {
                padding: 24px 20px 40px;
            }

            .article-header {
                padding: 32px 24px;
            }

            .article-h1 {
                font-size: 30px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                padding: 0 20px 32px;
            }
        }

        @media (max-width: 768px) {
            .article-body {
                padding: 32px 20px;
            }

            .article-h1 {
                font-size: 26px;
            }

            .article-header {
                padding: 28px 20px;
                border-radius: 18px;
            }

            .article-meta {
                gap: 12px;
                font-size: 12px;
            }

            .article-pagination {
                grid-template-columns: 1fr;
                gap: 12px;
            }

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

            .related-thumb {
                height: 180px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .main-content {
                padding: 16px 16px 32px;
            }

            .breadcrumb {
                font-size: 12px;
                margin-bottom: 20px;
            }

            .article-h1 {
                font-size: 22px;
                line-height: 1.4;
            }

            .article-body {
                padding: 24px 16px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 19px;
            }

            .article-pagination {
                margin-bottom: 32px;
            }

            .section-title {
                font-size: 20px;
            }

            .footer-bottom {
                padding: 20px 16px 0;
                font-size: 12px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0D7A73;
            --primary-dark: #0A3F3B;
            --accent: #FF6B4A;
            --bg: #F7FAF9;
            --card: #FFFFFF;
            --text: #182A2A;
            --text-secondary: #5A6B6A;
            --border: #E4EBE9;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        ul {
            list-style: none;
        }

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

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 220px;
            height: 100vh;
            background: var(--primary-dark);
            color: #fff;
            display: flex;
            flex-direction: column;
            padding: 32px 0 24px;
            z-index: 50;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 24px;
            margin-bottom: 40px;
        }

        .brand-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(255, 107, 74, 0.3);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .sidebar-nav {
            flex: 1;
            padding: 0 12px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 6px;
            border: none;
            background: transparent;
            width: 100%;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateX(2px);
        }

        .nav-link.active {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-weight: 600;
            box-shadow: inset 4px 0 0 var(--accent);
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
        }

        .sidebar-cta {
            margin: 0 24px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .btn-consult {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 12px;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(255, 107, 74, 0.2);
        }

        .btn-consult:hover {
            filter: brightness(1.06);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 74, 0.35);
        }

        .btn-consult:focus {
            outline: 2px solid rgba(255, 255, 255, 0.6);
            outline-offset: 2px;
        }

        /* ===== 主内容区布局 ===== */
        .main-wrapper {
            margin-left: 220px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--primary-dark);
            color: #fff;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 100;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 12px;
        }

        .mobile-brand .brand-text {
            font-size: 16px;
        }

        .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.3s;
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .hamburger:focus {
            outline: 2px solid rgba(255, 255, 255, 0.5);
            outline-offset: 2px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--primary-dark);
            padding: 16px 16px 24px;
            z-index: 99;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
            border-radius: 0 0 20px 20px;
        }

        .mobile-menu.open {
            display: block;
            animation: slideDown 0.3s ease;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-menu .nav-link {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 0;
            padding: 14px 16px;
        }

        .mobile-menu .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-menu .nav-link.active {
            box-shadow: inset 4px 0 0 var(--accent);
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu .btn-consult {
            margin-top: 16px;
        }

        /* ===== Hero 区 ===== */
        .category-hero {
            position: relative;
            min-height: 420px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            display: flex;
            align-items: center;
            padding: 80px 48px;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.96) 20%, rgba(255, 255, 255, 0.7) 55%, rgba(255, 255, 255, 0.25) 100%);
            z-index: 1;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            border: 2px solid rgba(13, 122, 115, 0.06);
            right: 80px;
            bottom: 20px;
            z-index: 0;
        }

        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: 560px;
        }

        .category-hero .section-label {
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 420px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(13, 122, 115, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 122, 115, 0.3);
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: translateY(0px);
            box-shadow: 0 2px 8px rgba(13, 122, 115, 0.2);
        }

        .btn-primary:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 6px rgba(13, 122, 115, 0.12);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(13, 122, 115, 0.08);
            transform: translateY(-2px);
        }

        .btn-ghost:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 80px 24px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(13, 122, 115, 0.1);
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.7;
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header-center {
            text-align: center;
        }

        .section-header-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 流程步骤条 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 36px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
            position: relative;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(13, 122, 115, 0.25);
        }

        .step-number {
            width: 52px;
            height: 52px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 16px rgba(13, 122, 115, 0.25);
        }

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

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

        .step-card::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -12px;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.3;
        }

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

        /* ===== 登录问题说明区 ===== */
        .feature-rows {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .feature-row {
            display: flex;
            align-items: center;
            gap: 48px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .feature-row:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(13, 122, 115, 0.15);
            transform: translateY(-3px);
        }

        .feature-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .feature-row img {
            width: 42%;
            height: 260px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .feature-row-body {
            padding: 40px 40px 40px 0;
            flex: 1;
        }

        .feature-row:nth-child(even) .feature-row-body {
            padding: 40px 0 40px 48px;
        }

        .feature-row-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-row-body h3 i {
            color: var(--primary);
            font-size: 20px;
            background: rgba(13, 122, 115, 0.1);
            padding: 8px;
            border-radius: 10px;
        }

        .feature-row-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-section {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(13, 122, 115, 0.3);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: color 0.3s;
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question.active {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(13, 122, 115, 0.1);
            border-radius: 50%;
            color: var(--primary);
            transition: transform 0.3s;
            font-size: 14px;
        }

        .faq-question.active .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-answer.open {
            max-height: 300px;
            padding-bottom: 24px;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 24px 24px 80px;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--primary) 0%, #0A6E68 45%, var(--accent) 120%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(13, 122, 115, 0.25);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            top: -60px;
            right: -40px;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.08);
            bottom: 20px;
            left: 30%;
        }

        .cta-text {
            position: relative;
            z-index: 1;
        }

        .cta-text h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-text p {
            font-size: 15px;
            opacity: 0.92;
            max-width: 400px;
        }

        .cta-card .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .cta-card .btn-primary:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            filter: none;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: #fff;
            padding: 56px 24px 24px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .sidebar-brand {
            margin-bottom: 16px;
            padding: 0;
        }

        .footer-brand .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            font-size: 13px;
        }

        .footer-brand-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            max-width: 340px;
        }

        .site-footer h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .footer-links a,
        .footer-contact-info p {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            margin-bottom: 12px;
            transition: color 0.3s;
            line-height: 1.5;
        }

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

        .footer-links a i {
            font-size: 12px;
            color: var(--accent);
            opacity: 0.6;
        }

        .footer-contact-info p i {
            width: 20px;
            color: var(--accent);
            opacity: 0.7;
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1200px) {
            .feature-row img {
                width: 38%;
                height: 220px;
            }
        }

        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 60px;
            }

            .site-footer {
                margin-left: 0;
            }

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

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

            .category-hero {
                padding: 64px 40px;
                min-height: 380px;
            }

            .category-hero h1 {
                font-size: 38px;
            }

            .section {
                padding: 64px 24px;
            }

            .section-title {
                font-size: 28px;
            }

            .feature-row {
                gap: 32px;
            }

            .feature-row img {
                width: 40%;
            }

            .feature-row-body {
                padding: 28px 28px 28px 0;
            }

            .feature-row:nth-child(even) .feature-row-body {
                padding: 28px 0 28px 32px;
            }
        }

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

            .section {
                padding: 48px 16px;
            }

            .section-header {
                margin-bottom: 36px;
            }

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

            .category-hero {
                padding: 48px 20px;
                min-height: 340px;
            }

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

            .category-hero p {
                font-size: 14px;
                margin-bottom: 24px;
            }

            .hero-buttons {
                flex-direction: column;
                gap: 12px;
            }

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .step-card {
                display: flex;
                align-items: center;
                text-align: left;
                gap: 16px;
                padding: 20px;
            }

            .step-number {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
                font-size: 18px;
                border-radius: 12px;
            }

            .step-card h3 {
                font-size: 16px;
                margin-bottom: 4px;
            }

            .step-card p {
                font-size: 13px;
            }

            .feature-rows {
                gap: 24px;
            }

            .feature-row,
            .feature-row:nth-child(even) {
                flex-direction: column;
                gap: 0;
            }

            .feature-row img {
                width: 100%;
                height: 200px;
            }

            .feature-row-body,
            .feature-row:nth-child(even) .feature-row-body {
                padding: 24px;
            }

            .feature-row-body h3 {
                font-size: 18px;
            }

            .feature-row-body p {
                font-size: 14px;
            }

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

            .faq-answer {
                padding: 0 16px;
                font-size: 13px;
            }

            .faq-answer.open {
                padding-bottom: 18px;
            }

            .cta-section {
                padding: 16px 16px 56px;
            }

            .cta-card {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }

            .cta-text h3 {
                font-size: 22px;
            }

            .cta-text p {
                margin-left: auto;
                margin-right: auto;
            }

            .cta-card .btn-primary {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-brand-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .category-hero {
                padding: 40px 16px;
                min-height: 300px;
            }

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

            .category-hero p {
                font-size: 13px;
            }

            .hero-buttons .btn-primary,
            .hero-buttons .btn-ghost {
                font-size: 14px;
                padding: 12px 20px;
            }

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

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

            .step-card {
                padding: 16px;
            }

            .step-card h3 {
                font-size: 15px;
            }

            .cta-card {
                padding: 28px 20px;
            }

            .cta-text h3 {
                font-size: 20px;
            }
        }

        /* ===== 装饰与支持 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
        }

/* roulang page: category2 */
:root {
            --primary: #0D7A73;
            --primary-dark: #0A3F3B;
            --accent: #FF6B4A;
            --bg-light: #F7FAF9;
            --text-main: #182A2A;
            --text-secondary: #5A6B6A;
            --border-color: #E4EBE9;
            --card-radius: 20px;
            --btn-radius: 12px;
            --shadow-default: 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

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

        /* 左侧导航 */
        .sidebar {
            width: 220px;
            background: var(--primary-dark);
            color: #fff;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            z-index: 50;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 12px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 20px;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }

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

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            border-left: 4px solid transparent;
            transition: all 0.25s ease;
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
        }

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

        .nav-link.active {
            background: rgba(255, 255, 255, 0.12);
            border-left-color: var(--accent);
            color: #fff;
            font-weight: 600;
        }

        .sidebar-cta {
            padding: 12px 4px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .sidebar-cta .btn-primary {
            width: 100%;
        }

        /* 主内容区 */
        .main-wrapper {
            flex: 1;
            margin-left: 220px;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .main-content {
            flex: 1;
        }

        /* 移动端头部 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--primary-dark);
            z-index: 100;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .mobile-header .mobile-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
        }

        .mobile-menu-btn {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }

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

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--primary-dark);
            padding: 16px;
            z-index: 99;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .mobile-nav-panel.open {
            display: block;
        }

        .mobile-nav-panel .nav-link {
            padding: 14px 12px;
        }

        /* 通用容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Hero 区 */
        .category-hero {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            margin: 32px 32px 0;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            padding: 48px;
            background-size: cover;
            background-position: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.82) 55%, rgba(255, 255, 255, 0.3) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 580px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 107, 74, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
        }

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

        .hero-visual {
            flex-shrink: 0;
            max-width: 340px;
            position: relative;
            z-index: 2;
        }

        .hero-visual-card {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
            background: #fff;
            padding: 10px;
        }

        .hero-visual-card img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-radius: 16px;
        }

        .visual-caption {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 8px 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .visual-caption i {
            color: var(--accent);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--btn-radius);
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(13, 122, 115, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 122, 115, 0.35);
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 6px rgba(13, 122, 115, 0.1);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: var(--primary);
            font-size: 15px;
            font-weight: 500;
            border: 1.5px solid var(--primary);
            border-radius: var(--btn-radius);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: rgba(13, 122, 115, 0.08);
        }

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

        /* 区块标题 */
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* 分类页通用 */
        .page-section {
            padding: 64px 32px;
        }

        /* 规则卡片 */
        .rules-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .rule-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-default);
            position: relative;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .rule-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(13, 122, 115, 0.2);
        }

        .rule-card .rule-number {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 40px;
            font-weight: 800;
            color: rgba(13, 122, 115, 0.08);
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }

        .rule-card .rule-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .rule-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .rule-status {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .rule-status.active {
            background: rgba(16, 185, 129, 0.12);
            color: #10B981;
        }

        .rule-status.upcoming {
            background: rgba(245, 158, 11, 0.12);
            color: #F59E0B;
        }

        .rule-status.ended {
            background: rgba(239, 68, 68, 0.12);
            color: #EF4444;
        }

        .rule-card .rule-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 20px;
            flex: 1;
        }

        .rule-card .rule-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s;
        }

        .rule-card .rule-link:hover {
            color: var(--accent);
        }

        .rule-card .rule-link i {
            transition: transform 0.2s;
        }

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

        /* 详细规则 */
        .detail-section-wrapper {
            padding: 0 32px 64px;
        }

        .detail-section {
            background: #fff;
            border-radius: 24px;
            padding: 48px;
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color);
        }

        .detail-layout {
            display: flex;
            gap: 48px;
            align-items: flex-start;
            max-width: 1000px;
            margin: 0 auto;
        }

        .detail-image {
            flex-shrink: 0;
            width: 280px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
        }

        .detail-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .detail-content-width {
            flex: 1;
        }

        .detail-content-width h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .detail-intro {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .detail-list {
            display: flex;
            flex-direction: column;
        }

        .detail-item {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid #F0F5F4;
            align-items: flex-start;
        }

        .detail-item:last-child {
            border-bottom: none;
        }

        .detail-item .detail-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-variant-numeric: tabular-nums;
        }

        .detail-item .detail-content h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .detail-item .detail-content p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* FAQ */
        .faq-section {
            max-width: 800px;
            margin: 0 auto;
            padding: 64px 32px 48px;
        }

        .faq-item {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s;
        }

        .faq-item:hover {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }

        .faq-item.open {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            border-color: rgba(13, 122, 115, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.3s;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            font-size: 14px;
            transition: transform 0.3s;
            color: var(--text-secondary);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 0 solid transparent;
        }

        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
            border-top-width: 1px;
            border-color: #F0F5F4;
        }

        /* CTA */
        .cta-banner {
            margin: 0 32px 64px;
            border-radius: 24px;
            padding: 56px 48px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 10%;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-banner h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 15px;
            opacity: 0.92;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-white {
            background: #fff;
            color: var(--primary);
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--btn-radius);
            display: inline-block;
            transition: all 0.3s;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
            position: relative;
            z-index: 1;
            border: none;
        }

        .cta-banner .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
        }

        .cta-banner .btn-white:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--primary-dark);
            color: #fff;
            padding: 56px 24px 24px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .sidebar-brand {
            border-bottom: none;
            margin-bottom: 12px;
            padding: 0;
        }

        .footer-brand-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-top: 12px;
        }

        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            color: #fff;
        }

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

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-contact-info p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-contact-info i {
            width: 18px;
            text-align: center;
            color: var(--accent);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 60px;
            }

            .category-hero {
                margin: 16px 16px 0;
                padding: 36px;
                min-height: 300px;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .page-section {
                padding: 48px 16px;
            }

            .detail-section-wrapper {
                padding: 0 16px 48px;
            }

            .detail-section {
                padding: 32px 24px;
            }

            .cta-banner {
                margin: 0 16px 48px;
                padding: 40px 24px;
            }

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

            .rules-grid {
                gap: 20px;
            }

            .detail-layout {
                flex-direction: column;
                gap: 32px;
            }

            .detail-image {
                width: 100%;
                max-width: 400px;
            }
        }

        @media (max-width: 768px) {
            .rules-grid {
                grid-template-columns: 1fr;
            }

            .category-hero {
                flex-direction: column;
                padding: 28px 20px;
            }

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

            .hero-visual {
                max-width: 100%;
                width: 100%;
            }

            .hero-visual-card img {
                height: 150px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .detail-section {
                padding: 24px 16px;
            }

            .detail-item {
                flex-direction: column;
                gap: 8px;
            }

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

            .faq-section {
                padding: 48px 16px 32px;
            }

            .cta-banner {
                padding: 32px 20px;
            }

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

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

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

            .hero-subtitle {
                font-size: 14px;
            }

            .rule-card {
                padding: 22px;
            }

            .rule-card .rule-number {
                font-size: 32px;
                top: 16px;
                right: 16px;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .detail-content-width h2 {
                font-size: 22px;
            }
        }