/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2E6BE6;
            --primary-dark: #1D56C7;
            --primary-light: #4F8DF9;
            --navy: #0F2557;
            --accent: #F59E0B;
            --bg-main: #FFFFFF;
            --bg-alt: #F5F8FD;
            --border: #E3E9F2;
            --text-main: #1E293B;
            --text-body: #475569;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(15, 37, 87, 0.04);
            --shadow-md: 0 8px 24px rgba(15, 37, 87, 0.06);
            --shadow-lg: 0 12px 32px rgba(46, 107, 230, 0.12);
            --shadow-cta: 0 4px 16px rgba(46, 107, 230, 0.25);
            --transition: all 0.3s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--navy);
            line-height: 1.4;
            font-weight: 600;
        }

        /* ===== 布局骨架 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            z-index: 100;
            background: #fff;
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            padding: 24px 20px;
        }
        .main-wrapper {
            margin-left: 260px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
        }

        /* ===== 侧边导航 ===== */
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 4px 24px;
            border-bottom: 1px solid #F1F5F9;
            margin-bottom: 16px;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .side-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
            padding: 8px 0;
        }
        .side-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .side-link i {
            width: 20px;
            text-align: center;
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
        }
        .side-link:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .side-link:hover i {
            color: var(--primary);
        }
        .side-link.active {
            background: #EFF4FE;
            color: var(--primary);
            font-weight: 600;
        }
        .side-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            border-radius: 4px;
            background: var(--primary);
        }
        .side-link.active i {
            color: var(--primary);
        }
        .sidebar-contact {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            margin-top: 16px;
        }
        .contact-label {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 4px;
        }
        .contact-phone {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
            font-family: var(--font-num);
        }
        .contact-domain {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
            word-break: break-all;
        }
        .sidebar-copy {
            text-align: center;
            font-size: 12px;
            color: var(--text-light);
            padding: 16px 0 0;
            border-top: 1px solid #F1F5F9;
            margin-top: 12px;
        }

        /* ===== 移动端导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            z-index: 200;
            background: #fff;
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 8px rgba(15, 37, 87, 0.04);
        }
        .mobile-brand {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
        }
        .burger {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--navy);
            font-size: 18px;
            background: var(--bg-alt);
            transition: var(--transition);
        }
        .burger:hover {
            background: #E9EEF8;
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 300;
            background: rgba(15, 37, 87, 0.4);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.show {
            opacity: 1;
        }
        .drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 280px;
            height: 100vh;
            z-index: 400;
            background: #fff;
            flex-direction: column;
            padding: 24px 20px;
            transition: right 0.3s ease;
            box-shadow: -8px 0 24px rgba(15, 37, 87, 0.08);
        }
        .drawer.open {
            right: 0;
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid #F1F5F9;
        }
        .drawer-brand {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
        }
        .drawer-close {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            background: var(--bg-alt);
            color: var(--navy);
            font-size: 16px;
        }
        .drawer-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .drawer-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid #F1F5F9;
        }
        .drawer-link.active {
            color: var(--primary);
            font-weight: 600;
            background: #EFF4FE;
        }
        .drawer-footer {
            padding: 16px 12px;
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            font-size: 13px;
            color: var(--text-muted);
            line-height: 2;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(46, 107, 230, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline {
            background: #fff;
            border-color: #CFD9EA;
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--bg-alt);
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:active {
            transform: scale(0.98);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            background: #D97706;
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 18px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }
        .btn-white:hover {
            background: #F0F4FF;
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .hero {
            background: radial-gradient(circle at 85% 20%, rgba(46, 107, 230, 0.07), transparent 55%),
                linear-gradient(135deg, #F5F8FD 0%, #FFFFFF 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(46, 107, 230, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero h1 {
            font-size: 40px;
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 64px;
            padding: 24px 40px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .stat-item {
            text-align: center;
            padding: 8px;
        }
        .stat-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .stat-item+.stat-item {
            border-left: 1px solid var(--border);
        }

        /* ===== 通用板块标题 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== 优惠阶梯 ===== */
        .price-section {
            background: #fff;
        }
        .price-steps {
            display: flex;
            gap: 24px;
            align-items: flex-end;
        }
        .price-card {
            flex: 1;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .price-card.basic {
            min-height: 340px;
        }
        .price-card.pro {
            min-height: 400px;
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            z-index: 2;
        }
        .price-card.premium {
            min-height: 460px;
        }
        .price-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .price-card .plan-tag {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--text-light);
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .price-card.pro .plan-tag {
            color: rgba(255, 255, 255, 0.8);
        }
        .price-card .plan-name {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--navy);
        }
        .price-card.pro .plan-name {
            color: #fff;
        }
        .price-card .price-main {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 700;
            color: var(--navy);
            margin-bottom: 4px;
        }
        .price-card.pro .price-main {
            color: #fff;
        }
        .price-card .price-period {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .price-card.pro .price-period {
            color: rgba(255, 255, 255, 0.7);
        }
        .price-card .plan-features {
            flex: 1;
            margin-bottom: 24px;
        }
        .price-card .plan-features li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-body);
        }
        .price-card.pro .plan-features li {
            color: rgba(255, 255, 255, 0.9);
        }
        .price-card .plan-features li i {
            color: var(--primary);
            font-size: 13px;
            margin-top: 4px;
        }
        .price-card.pro .plan-features li i {
            color: var(--accent);
        }
        .price-card .plan-btn {
            width: 100%;
        }
        .recommend-badge {
            position: absolute;
            top: -14px;
            right: 24px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }
        .price-card.pro .btn {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }
        .price-card.pro .btn:hover {
            background: #F0F4FF;
        }

        /* ===== 套餐对比 ===== */
        .compare-section {
            background: var(--bg-alt);
        }
        .compare-table-wrap {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow-x: auto;
            border: 1px solid var(--border);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 24px;
            text-align: center;
            font-size: 14px;
        }
        .compare-table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 20px 24px;
        }
        .compare-table th:first-child {
            text-align: left;
        }
        .compare-table th.recommend {
            background: var(--navy);
            position: relative;
        }
        .compare-table td {
            border-bottom: 1px solid var(--border);
            color: var(--text-body);
        }
        .compare-table tr:nth-child(even) td {
            background: #F8FAFC;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table td:first-child {
            text-align: left;
            font-weight: 500;
            color: var(--navy);
            white-space: nowrap;
        }
        .compare-table td i {
            color: var(--primary);
            font-size: 16px;
        }
        .compare-table .fa-xmark {
            color: var(--text-light);
        }

        /* ===== 限时入口 ===== */
        .timely-section {
            background: linear-gradient(135deg, #2E6BE6, #4F8DF9);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .timely-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
        }
        .timely-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .timely-inner h2 {
            color: #fff;
            font-size: 32px;
            margin-bottom: 12px;
        }
        .timely-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 32px;
        }
        .countdown {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 32px;
        }
        .cd-item {
            background: #fff;
            border-radius: 12px;
            padding: 12px 20px;
            min-width: 80px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .cd-num {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 700;
            color: var(--navy);
            line-height: 1.2;
        }
        .cd-label {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .cd-sep {
            font-size: 36px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.6);
            align-self: center;
            line-height: 1;
            padding-bottom: 18px;
        }

        /* ===== 资讯卡片 ===== */
        .news-section {
            background: #fff;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(46, 107, 230, 0.3);
        }
        .news-thumb {
            aspect-ratio: 4/3;
            overflow: hidden;
            background: var(--bg-alt);
            position: relative;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.04);
        }
        .news-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-meta-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
        }
        .news-cat {
            font-size: 13px;
            color: var(--primary);
            background: rgba(46, 107, 230, 0.08);
            padding: 2px 10px;
            border-radius: var(--radius-full);
            font-weight: 500;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-light);
        }
        .news-body h3 {
            font-size: 18px;
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            color: var(--navy);
        }
        .news-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-more {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-more i {
            font-size: 12px;
            transition: transform 0.3s ease;
        }
        .news-card:hover .news-more i {
            transform: translateX(4px);
        }
        .news-footer {
            text-align: center;
            margin-top: 40px;
        }
        .empty-state {
            text-align: center;
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            padding: 60px 30px;
            border: 1px dashed var(--border);
        }
        .empty-icon {
            font-size: 36px;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .empty-state p {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-alt);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            box-shadow: var(--shadow-md);
            border-color: rgba(46, 107, 230, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--navy);
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 16px;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
            background: #F8FAFC;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        /* ===== 咨询表单 ===== */
        .consult-section {
            background: #fff;
        }
        .consult-wrap {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 48px;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .consult-info h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .consult-info>p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .contact-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .contact-item .icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(46, 107, 230, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .contact-item .text {
            font-size: 14px;
            color: var(--text-body);
        }
        .contact-item .text strong {
            display: block;
            font-size: 15px;
            color: var(--navy);
            font-weight: 600;
        }
        .consult-form {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: #334155;
            margin-bottom: 8px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            height: 46px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-main);
            background: #fff;
            transition: var(--transition);
        }
        .form-group textarea {
            height: 120px;
            padding: 14px;
            resize: vertical;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 107, 230, 0.12);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-light);
        }
        .consult-form .btn-submit {
            width: 100%;
            height: 48px;
            margin-top: 8px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--navy);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact {
            font-size: 14px;
            line-height: 2;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-contact a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-contact a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 64px;
            }
            .mobile-header {
                display: flex;
            }
            .drawer-overlay {
                display: block;
            }
            .drawer {
                display: flex;
            }
            .container {
                padding: 0 24px;
            }
            .hero {
                padding: 60px 0 40px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual {
                max-width: 560px;
            }
            .hero-stats {
                margin-top: 40px;
                padding: 20px 24px;
            }
            .price-steps {
                flex-direction: column;
                align-items: stretch;
            }
            .price-card.basic,
            .price-card.pro,
            .price-card.premium {
                min-height: auto;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .consult-wrap {
                grid-template-columns: 1fr;
                padding: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .section-padding {
                padding: 56px 0;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
                padding: 16px;
            }
            .stat-num {
                font-size: 26px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .compare-table th,
            .compare-table td {
                padding: 12px 16px;
                font-size: 13px;
            }
            .countdown {
                flex-wrap: wrap;
                gap: 10px;
            }
            .cd-item {
                min-width: 70px;
                padding: 10px 14px;
            }
            .cd-num {
                font-size: 30px;
            }
            .cd-sep {
                display: none;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .footer-links {
                align-items: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                padding: 40px 0 32px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 20px;
            }
            .stat-item+.stat-item {
                border-left: none;
                border-top: 1px solid var(--border);
                padding-top: 16px;
            }
            .price-card {
                padding: 24px;
            }
            .price-card .price-main {
                font-size: 34px;
            }
            .consult-wrap {
                padding: 20px;
            }
            .consult-form {
                padding: 24px 20px;
            }
            .timely-inner h2 {
                font-size: 24px;
            }
            .countdown {
                gap: 6px;
            }
            .cd-item {
                min-width: 62px;
                padding: 8px 10px;
            }
            .cd-num {
                font-size: 26px;
            }
        }

/* roulang page: article */
/* ============ 设计变量 ============ */
        :root {
            --primary: #2E6BE6;
            --primary-dark: #1E5AD0;
            --primary-light: #EFF4FE;
            --secondary: #0F2557;
            --accent: #F59E0B;
            --bg: #FFFFFF;
            --bg-alt: #F5F8FD;
            --border: #E3E9F2;
            --text: #334155;
            --text-weak: #64748B;
            --text-light: #94A3B8;
            --shadow-sm: 0 2px 8px rgba(15, 37, 87, 0.04);
            --shadow-md: 0 8px 24px rgba(15, 37, 87, 0.06);
            --shadow-hover: 0 12px 32px rgba(46, 107, 230, 0.12);
            --radius: 16px;
            --radius-sm: 10px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: 14px;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            line-height: 1.4;
            cursor: pointer;
            border: 1px solid transparent;
            transition: all .25s ease;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(46, 107, 230, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 107, 230, 0.35);
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 2px 8px rgba(46, 107, 230, 0.2);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border-color: #CFD9EA;
        }

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

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

        /* ============ 左侧导航 ============ */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background: #fff;
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
        }

        .sidebar-brand {
            height: 80px;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 24px;
            border-bottom: 1px solid var(--border);
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .side-menu {
            flex: 1;
            padding: 24px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .side-link {
            display: flex;
            align-items: center;
            gap: 14px;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            position: relative;
            transition: all .2s ease;
        }

        .side-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-light);
            transition: color .2s;
        }

        .side-link:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }

        .side-link:hover i {
            color: var(--primary);
        }

        .side-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .side-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            border-radius: 0 4px 4px 0;
            background: var(--primary);
        }

        .side-link.active i {
            color: var(--primary);
        }

        .sidebar-contact {
            padding: 20px 24px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-light);
        }

        .contact-phone {
            font-family: var(--font-num);
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .contact-domain {
            color: var(--text-light);
            font-size: 13px;
        }

        /* ============ 移动端顶部导航 ============ */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            z-index: 200;
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-brand {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-brand .brand-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }

        .hamburger {
            width: 40px;
            height: 40px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--secondary);
            cursor: pointer;
            transition: background .2s;
        }

        .hamburger:hover {
            background: var(--primary-light);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 199;
            padding: 24px 20px 40px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }

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

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid #F1F5F9;
        }

        .mobile-menu a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .mobile-menu a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .mobile-menu .menu-contact {
            margin-top: 24px;
            padding: 20px 16px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* ============ 主内容区 ============ */
        .main-content {
            margin-left: 260px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ============ 面包屑 ============ */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-light);
            padding: 24px 0 8px;
        }

        .breadcrumb a {
            color: var(--text-light);
            transition: color .2s;
        }

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

        .breadcrumb .sep {
            color: #CBD5E1;
        }

        .breadcrumb .current {
            color: var(--text-weak);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ============ 文章容器 ============ */
        .article-container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 24px 40px 60px;
            width: 100%;
        }

        /* ============ 文章头部 ============ */
        .article-header {
            background: linear-gradient(135deg, #F0F5FF 0%, #FFFFFF 100%);
            border-radius: var(--radius);
            padding: 48px 48px 36px;
            border: 1px solid var(--border);
            margin-bottom: 40px;
        }

        .article-header h1 {
            font-size: 36px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--secondary);
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: var(--text-weak);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* ============ 正文区 ============ */
        .article-body {
            max-width: 820px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }

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

        .article-body h2,
        .article-body h3 {
            color: var(--secondary);
            font-weight: 600;
            margin: 36px 0 16px;
            line-height: 1.4;
        }

        .article-body h2 {
            font-size: 24px;
        }

        .article-body h3 {
            font-size: 20px;
        }

        .article-body img {
            border-radius: 12px;
            margin: 24px 0;
        }

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

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

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

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-alt);
            padding: 16px 24px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
            color: var(--text-weak);
        }

        .article-body code {
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-family: "SF Mono", "Consolas", monospace;
            font-size: 14px;
            color: var(--primary-dark);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

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

        /* ============ 内容未找到 ============ */
        .article-not-found {
            max-width: 820px;
            margin: 60px auto;
            text-align: center;
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 80px 40px;
        }

        .not-found-icon {
            font-size: 56px;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .article-not-found p {
            font-size: 20px;
            color: var(--text-weak);
            margin-bottom: 24px;
        }

        /* ============ 标签区 ============ */
        .article-tags {
            max-width: 820px;
            margin: 40px auto 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 999px;
            font-weight: 500;
            transition: all .2s ease;
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .tag i {
            font-size: 12px;
        }

        /* ============ 相关推荐 ============ */
        .related-section {
            max-width: 820px;
            margin: 60px auto 0;
            border-top: 1px solid var(--border);
            padding-top: 48px;
        }

        .related-section h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 24px;
            position: relative;
            padding-left: 16px;
        }

        .related-section h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            border-radius: 4px;
            background: var(--primary);
        }

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

        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all .3s ease;
            box-shadow: var(--shadow-sm);
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(46, 107, 230, 0.3);
        }

        .related-card img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .related-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s;
        }

        .related-card:hover .related-card-body h3 {
            color: var(--primary);
        }

        .related-card-body p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ 返回列表 ============ */
        .article-footer {
            max-width: 820px;
            margin: 48px auto 0;
            text-align: center;
        }

        /* ============ 页脚 ============ */
        .footer {
            background: var(--secondary);
            color: #fff;
            padding: 60px 0 0;
            margin-left: 0;
        }

        .footer .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color .2s, padding-left .2s;
        }

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

        .footer-contact {
            font-size: 14px;
            line-height: 2;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact a {
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

            .mobile-header {
                display: flex;
            }

            .main-content {
                padding-top: 64px;
            }

            .article-container {
                padding: 16px 24px 48px;
            }

            .article-header {
                padding: 32px 28px 24px;
            }

            .article-header h1 {
                font-size: 28px;
            }

            .article-meta {
                gap: 16px;
                font-size: 13px;
            }

            .footer .container {
                padding: 0 24px;
            }

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

        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .article-header h1 {
                font-size: 24px;
            }

            .article-meta {
                flex-direction: column;
                gap: 8px;
            }

            .article-container {
                padding: 12px 16px 40px;
            }
        }

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

            .breadcrumb {
                font-size: 12px;
                padding: 16px 0 4px;
            }

            .breadcrumb .current {
                max-width: 180px;
            }

            .article-header {
                padding: 24px 20px 20px;
                border-radius: 12px;
            }

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

            .article-body {
                font-size: 15px;
                line-height: 1.85;
            }

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

            .article-tags {
                gap: 8px;
            }

            .tag {
                padding: 5px 12px;
                font-size: 12px;
            }

            .related-section {
                margin-top: 40px;
                padding-top: 32px;
            }

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

            .footer-desc {
                margin: 0 auto;
            }

            .footer-links {
                align-items: center;
            }

            .footer .container {
                padding: 0 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E6BE6;
            --primary-dark: #2458C2;
            --primary-light: #EFF4FE;
            --navy: #0F2557;
            --amber: #F59E0B;
            --bg: #FFFFFF;
            --bg-alt: #F5F8FD;
            --border: #E3E9F2;
            --text: #334155;
            --text-weak: #64748B;
            --muted: #94A3B8;
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 37, 87, 0.04);
            --shadow-md: 0 8px 24px rgba(15, 37, 87, 0.06);
            --shadow-hover: 0 12px 32px rgba(46, 107, 230, 0.12);
            --shadow-btn: 0 4px 16px rgba(46, 107, 230, 0.25);
            --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
            --sidebar-w: 260px;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        i {
            font-style: normal;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 500;
            line-height: 1.4;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 107, 230, 0.35);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 37, 87, 0.15);
        }

        .btn-white:hover {
            background: #F5F8FD;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 37, 87, 0.2);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 600;
            color: var(--navy);
            line-height: 1.4;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.8;
        }

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

        .section-head.light p {
            color: rgba(255, 255, 255, 0.75);
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: #fff;
            border-right: 1px solid #E5EAF0;
            display: flex;
            flex-direction: column;
            z-index: 100;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 80px;
            padding: 0 24px;
            border-bottom: 1px solid #F1F5F9;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .side-menu {
            flex: 1;
            padding: 24px 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .side-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            transition: var(--transition);
            position: relative;
        }

        .side-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: #94A3B8;
            transition: var(--transition);
        }

        .side-link:hover {
            background: #F5F8FD;
            color: var(--primary);
        }

        .side-link:hover i {
            color: var(--primary);
        }

        .side-link.active {
            background: #EFF4FE;
            color: var(--primary);
            font-weight: 600;
        }

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

        .side-link.active i {
            color: var(--primary);
        }

        .side-foot {
            padding: 24px;
            border-top: 1px solid #F1F5F9;
        }

        .side-hotline {
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 700;
            color: var(--navy);
            letter-spacing: 1px;
        }

        .side-domain {
            font-size: 13px;
            color: var(--muted);
            margin-top: 4px;
            word-break: break-all;
        }

        .side-copy {
            font-size: 12px;
            color: #CBD5E1;
            margin-top: 8px;
        }

        /* ===== 移动端 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: #fff;
            border-bottom: 1px solid #E5EAF0;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            z-index: 200;
            box-shadow: 0 2px 8px rgba(15, 37, 87, 0.04);
        }

        .m-brand {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .m-brand span {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }

        .menu-toggle {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--navy);
            cursor: pointer;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: #F5F8FD;
        }

        .drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: #fff;
            z-index: 300;
            transition: right 0.3s ease;
            display: flex;
            flex-direction: column;
            box-shadow: -8px 0 24px rgba(15, 37, 87, 0.08);
        }

        .drawer.open {
            right: 0;
        }

        .drawer-head {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            border-bottom: 1px solid #F1F5F9;
            font-size: 17px;
            font-weight: 600;
            color: var(--navy);
        }

        .drawer-close {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--muted);
            cursor: pointer;
            border-radius: 8px;
            transition: var(--transition);
        }

        .drawer-close:hover {
            background: #F5F8FD;
            color: var(--primary);
        }

        .drawer-menu {
            flex: 1;
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .drawer-link {
            display: flex;
            align-items: center;
            gap: 14px;
            height: 48px;
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            border-bottom: 1px solid #F1F5F9;
            transition: var(--transition);
        }

        .drawer-link i {
            width: 20px;
            text-align: center;
            color: #94A3B8;
        }

        .drawer-link:hover,
        .drawer-link.active {
            color: var(--primary);
        }

        .drawer-link.active i {
            color: var(--primary);
        }

        .drawer-foot {
            padding: 24px 20px;
            border-top: 1px solid #F1F5F9;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 2;
        }

        .drawer-mask {
            position: fixed;
            inset: 0;
            background: rgba(15, 37, 87, 0.4);
            z-index: 250;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease;
        }

        .drawer-mask.show {
            opacity: 1;
            visibility: visible;
        }

        /* ===== 内容区 ===== */
        .content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1;
        }

        /* ===== 页面头部 ===== */
        .page-hero {
            background: linear-gradient(135deg, #0F2557 0%, #2E6BE6 58%, #4F8DF9 100%);
            color: #fff;
            padding: 84px 0 76px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            opacity: 0.6;
        }

        .page-hero h1 {
            font-size: 40px;
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: 1px;
            margin-bottom: 20px;
            color: #fff;
        }

        .page-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
        }

        /* ===== 图文介绍 ===== */
        .intro-section {
            padding: 90px 0;
            background: #fff;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .intro-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--bg-alt);
        }

        .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform 0.5s ease;
        }

        .intro-media:hover img {
            transform: scale(1.03);
        }

        .intro-text h2 {
            font-size: 32px;
            font-weight: 600;
            color: var(--navy);
            line-height: 1.4;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .intro-text p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-weak);
            margin-bottom: 20px;
        }

        .intro-text .btn {
            margin-top: 12px;
        }

        /* ===== 优势四宫格 ===== */
        .advantage-section {
            padding: 90px 0;
            background: var(--bg-alt);
        }

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

        .advantage-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .advantage-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 24px;
            transition: var(--transition);
        }

        .advantage-card:hover .advantage-icon {
            background: var(--primary);
            color: #fff;
        }

        .advantage-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
            margin-bottom: 12px;
        }

        .advantage-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-weak);
        }

        /* ===== 流程时间线 ===== */
        .process-section {
            padding: 90px 0;
            background: #fff;
        }

        .timeline {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            padding: 8px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 28px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary) 0%, rgba(46, 107, 230, 0.2) 100%);
            border-radius: 2px;
        }

        .timeline-item {
            display: flex;
            gap: 28px;
            margin-bottom: 36px;
            position: relative;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-num {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-family: var(--font-num);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
            box-shadow: 0 0 0 4px #EFF4FE;
            transition: var(--transition);
        }

        .timeline-item:hover .timeline-num {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 0 4px rgba(46, 107, 230, 0.15);
        }

        .timeline-card {
            flex: 1;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(46, 107, 230, 0.25);
        }

        .timeline-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--navy);
            margin-bottom: 8px;
        }

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

        /* ===== 服务覆盖 ===== */
        .modules-section {
            padding: 90px 0;
            background: var(--navy);
            position: relative;
            overflow: hidden;
        }

        .modules-section::before {
            content: '';
            position: absolute;
            left: -120px;
            bottom: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(46, 107, 230, 0.25);
        }

        .modules-section .container {
            position: relative;
            z-index: 2;
        }

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

        .module-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition);
        }

        .module-card:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }

        .module-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(46, 107, 230, 0.35);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .module-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }

        .module-card p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 90px 0;
            background: var(--bg-alt);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-item.active {
            border-color: rgba(46, 107, 230, 0.3);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 500;
            color: var(--navy);
            transition: var(--transition);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 28px 24px;
            font-size: 14px;
            line-height: 1.85;
            color: var(--text-weak);
            border-top: 1px solid #F1F5F9;
            margin: 0 0 0 0;
            padding-top: 18px;
            background: #F8FAFC;
            border-radius: 0 0 16px 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0 90px;
            background: #fff;
        }

        .cta-card {
            background: linear-gradient(135deg, #2E6BE6 0%, #4F8DF9 100%);
            border-radius: 20px;
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(46, 107, 230, 0.25);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-card::after {
            content: '';
            position: absolute;
            left: -40px;
            bottom: -80px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-card h2 {
            font-size: 30px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-card p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            position: relative;
            z-index: 2;
        }

        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--navy);
            color: #fff;
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand i {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            color: #fff;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .footer-contact {
            font-size: 14px;
            line-height: 2.2;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-contact a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
        }

        .footer-contact a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1100px) {
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .mobile-header {
                display: flex;
            }

            .content {
                margin-left: 0;
                padding-top: 64px;
            }

            .container {
                padding: 0 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 24px;
            }

            .page-hero {
                padding: 64px 0 56px;
            }

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

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

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

            .intro-text h2 {
                font-size: 26px;
            }

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

            .section {
                padding: 64px 0;
            }

            .intro-section,
            .advantage-section,
            .process-section,
            .modules-section,
            .faq-section,
            .cta-section {
                padding: 64px 0;
            }

            .timeline::before {
                left: 24px;
            }

            .timeline-num {
                width: 48px;
                height: 48px;
                font-size: 16px;
            }

            .timeline-item {
                gap: 20px;
            }

            .timeline-card {
                padding: 24px;
            }

            .cta-card {
                padding: 48px 28px;
            }

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

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

            .footer-desc {
                margin: 0 auto;
            }

            .footer-links {
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .advantage-grid,
            .modules-grid {
                grid-template-columns: 1fr;
            }

            .intro-grid {
                gap: 24px;
            }

            .timeline-card h3 {
                font-size: 16px;
            }

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

            .timeline-item {
                gap: 14px;
            }

            .timeline-num {
                width: 42px;
                height: 42px;
                font-size: 14px;
            }

            .timeline::before {
                left: 20px;
            }

            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-answer-inner {
                padding: 16px 20px 20px;
                font-size: 13px;
            }

            .cta-section {
                padding: 48px 0 64px;
            }

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

            .btn {
                padding: 12px 22px;
                font-size: 15px;
            }

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

            .footer {
                padding: 48px 0 0;
            }

            .footer-grid {
                padding-bottom: 32px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E6BE6;
            --primary-dark: #1E5AD0;
            --primary-light: #EFF4FE;
            --secondary: #0F2557;
            --accent: #F59E0B;
            --bg-soft: #F5F8FD;
            --border: #E3E9F2;
            --text-main: #1E293B;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --white: #FFFFFF;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 8px rgba(15, 37, 87, 0.04);
            --shadow-md: 0 8px 24px rgba(15, 37, 87, 0.06);
            --shadow-hover: 0 12px 32px rgba(46, 107, 230, 0.12);
            --shadow-cta: 0 4px 16px rgba(46, 107, 230, 0.25);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            background: #FFFFFF;
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }
        .layout {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: 260px;
            flex-shrink: 0;
            background: #FFFFFF;
            border-right: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 60;
            display: flex;
            flex-direction: column;
            padding: 0 16px;
        }
        .sidebar-brand {
            height: 80px;
            display: flex;
            align-items: center;
            padding: 0 8px;
            border-bottom: 1px solid #F1F5F9;
            margin-bottom: 20px;
            gap: 12px;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .side-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .side-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .2s;
            position: relative;
        }
        .side-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color .2s;
        }
        .side-link:hover {
            background: var(--bg-soft);
            color: var(--primary);
        }
        .side-link:hover i {
            color: var(--primary);
        }
        .side-link.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .side-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 4px;
            background: var(--primary);
        }
        .side-link.active i {
            color: var(--primary);
        }
        .sidebar-contact {
            padding: 20px 8px 16px;
            border-top: 1px solid #F1F5F9;
        }
        .contact-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .contact-phone {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            font-family: "DIN Alternate", "Roboto", sans-serif;
        }
        .contact-site {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
            word-break: break-all;
        }
        .main-area {
            flex: 1;
            margin-left: 260px;
            min-width: 0;
        }
        .mobile-header {
            display: none;
            height: 64px;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .mobile-brand {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            letter-spacing: 1px;
        }
        .menu-toggle {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--secondary);
            background: var(--bg-soft);
        }
        .mobile-overlay {
            display: none;
        }
        @media(max-width:1024px) {
            .sidebar {
                display: none;
            }
            .main-area {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-overlay {
                display: block;
                position: fixed;
                inset: 0;
                background: #fff;
                z-index: 100;
                padding: 20px;
                transform: translateX(100%);
                transition: transform .3s ease;
                visibility: hidden;
            }
            .mobile-overlay.open {
                transform: translateX(0);
                visibility: visible;
            }
            .drawer-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                height: 56px;
                border-bottom: 1px solid var(--border);
                margin-bottom: 20px;
            }
            .drawer-brand {
                font-size: 18px;
                font-weight: 600;
                color: var(--secondary);
            }
            .drawer-close {
                width: 36px;
                height: 36px;
                display: flex;
                align-items: center;
                justify-content: center;
                border-radius: 10px;
                background: var(--bg-soft);
                color: var(--secondary);
                font-size: 18px;
            }
            .drawer-menu {
                display: flex;
                flex-direction: column;
                gap: 4px;
            }
            .drawer-link {
                display: flex;
                align-items: center;
                gap: 12px;
                height: 48px;
                padding: 0 12px;
                border-radius: 10px;
                font-size: 15px;
                color: var(--text-secondary);
                border-bottom: 1px solid #F1F5F9;
            }
            .drawer-link.active {
                color: var(--primary);
                background: var(--primary-light);
                font-weight: 600;
            }
            .drawer-link i {
                width: 20px;
                text-align: center;
            }
            .drawer-footer {
                margin-top: 40px;
                text-align: center;
                color: var(--text-muted);
                font-size: 14px;
                line-height: 2;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            transition: all .2s;
            border: 1px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(46, 107, 230, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline {
            background: #fff;
            border-color: #CFD9EA;
            color: var(--primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: var(--primary-light);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            filter: brightness(0.95);
            transform: translateY(-1px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 37, 87, 0.12);
        }
        .btn-white:hover {
            background: var(--bg-soft);
            transform: translateY(-1px);
        }
        /* Hero */
        .page-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, rgba(239, 244, 254, 0.94) 0%, rgba(255, 255, 255, 0.97) 50%, rgba(245, 248, 253, 0.92) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: #CBD5E1;
        }
        .breadcrumb-current {
            color: var(--secondary);
            font-weight: 500;
        }
        .hero-content {
            max-width: 760px;
        }
        .hero-title {
            font-size: 40px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--secondary);
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .hero-desc {
            font-size: 22px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .hero-sub {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        /* 通用section */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 32px;
            font-weight: 600;
            color: var(--secondary);
            line-height: 1.4;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        /* 图文介绍 */
        .intro-section {
            background: #fff;
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-media {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
            aspect-ratio: 4/3;
        }
        .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .intro-media::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.2);
            pointer-events: none;
        }
        .intro-content .section-title {
            text-align: left;
            margin-bottom: 20px;
        }
        .intro-content .section-subtitle {
            text-align: left;
            margin: 0 0 20px;
            max-width: none;
        }
        .intro-list {
            list-style: none;
            margin-top: 16px;
        }
        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 8px 0;
        }
        .intro-list li i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        /* 优势四宫格 */
        .advantages-section {
            background: var(--bg-soft);
        }
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .adv-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: all .25s;
        }
        .adv-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .adv-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .adv-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        /* 数据面板 */
        .metrics-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #2E6BE6, #4F8DF9);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .metric-item {
            padding: 20px;
        }
        .metric-num {
            font-size: 48px;
            font-weight: 700;
            color: #fff;
            font-family: "DIN Alternate", "Roboto", sans-serif;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .metric-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
        }
        /* 流程时间线 */
        .process-section {
            background: #fff;
        }
        .timeline {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 48px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: #E3E9F2;
        }
        .timeline-item {
            position: relative;
            padding-left: 116px;
            padding-bottom: 48px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 96px;
            height: 96px;
            border-radius: 24px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            font-family: "DIN Alternate", "Roboto", sans-serif;
            border: 1px solid rgba(46, 107, 230, 0.1);
        }
        .timeline-content {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .2s;
        }
        .timeline-content:hover {
            box-shadow: var(--shadow-md);
        }
        .timeline-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .timeline-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        /* FAQ */
        .faq-section {
            background: var(--bg-soft);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow .2s;
        }
        .faq-item.open {
            box-shadow: var(--shadow-md);
            border-color: rgba(46, 107, 230, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            cursor: pointer;
            transition: color .2s;
        }
        .faq-question i {
            color: var(--text-muted);
            transition: transform .3s;
            font-size: 18px;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.open .faq-question {
            color: var(--primary);
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 28px 24px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            background: #F8FAFC;
        }
        /* CTA */
        .cta-banner {
            padding: 80px 0;
            background: var(--primary-light);
        }
        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-inner h2 {
            font-size: 32px;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .cta-inner p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* 页脚 */
        .footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color .2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-contact {
            font-size: 14px;
            line-height: 2;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-contact a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-contact a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        @media(max-width:1024px) {
            .container {
                padding: 0 24px;
            }
            .section {
                padding: 60px 0;
            }
            .adv-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .intro-media {
                max-width: 560px;
                margin: 0 auto;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media(max-width:768px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 48px 0 40px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 18px;
            }
            .hero-sub {
                font-size: 14px;
            }
            .section-title {
                font-size: 24px;
            }
            .hero-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .adv-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .metric-num {
                font-size: 32px;
            }
            .timeline::before {
                left: 28px;
            }
            .timeline-item {
                padding-left: 76px;
            }
            .timeline-num {
                width: 56px;
                height: 56px;
                border-radius: 16px;
                font-size: 18px;
            }
            .timeline-content {
                padding: 20px;
            }
            .timeline-content h3 {
                font-size: 17px;
            }
            .timeline-content p {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .footer-links {
                align-items: center;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .cta-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }
        @media(max-width:520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .metric-num {
                font-size: 28px;
            }
            .metric-label {
                font-size: 13px;
            }
            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-answer-inner {
                padding: 0 20px 20px;
            }
            .adv-card {
                padding: 24px 20px;
            }
            .intro-content .section-title {
                font-size: 22px;
            }
        }