:root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --secondary: #0d9488;
            --accent: #f97316;
            --bg-main: #ffffff;
            --bg-soft: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --border: #e2e8f0;
            --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
            --radius: 12px;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-main);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 头部导航 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-main);
            font-weight: 700;
            font-size: 1.25rem;
        }

        .logo-wrap img {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all 0.2s;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
        }

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

        .btn-outline:hover {
            background: var(--bg-soft);
            border-color: var(--text-muted);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-main);
        }

        /* 移动端侧边栏 */
        .mobile-nav {
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            padding: 24px;
            display: none;
            flex-direction: column;
            gap: 16px;
            z-index: 999;
            box-shadow: var(--shadow-lg);
        }

        .mobile-nav.active {
            display: flex;
        }

        /* Section 通用样式 */
        section {
            padding: 80px 0;
            position: relative;
        }

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

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 12px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.85rem;
            border-radius: 30px;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
        }

        /* 1. 首页 Hero (首屏无图) */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(13, 148, 136, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                        var(--bg-main);
            position: relative;
            overflow: hidden;
        }

        .hero-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .hero-badge {
            background: linear-gradient(90deg, rgba(37,99,235,0.1) 0%, rgba(13,148,136,0.1) 100%);
            border: 1px solid rgba(37,99,235,0.2);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 24px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #0d9488 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            width: 100%;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .hero-actions .btn {
            padding: 14px 32px;
            font-size: 1.05rem;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            width: 100%;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .stat-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .about-feature-icon {
            color: var(--secondary);
            font-size: 1.25rem;
            line-height: 1;
        }

        .about-feature-text h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .about-feature-text p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        .about-visual {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(13, 148, 136, 0.05));
            border: 2px dashed var(--border);
            border-radius: var(--radius);
            padding: 40px;
            text-align: center;
        }

        .about-visual-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }

        /* 3. 全平台AIGC服务 & 支持的AI平台 */
        .models-marquee {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .model-badge {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.2s;
        }

        .model-badge:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: rgba(37, 99, 235, 0.03);
            transform: translateY(-2px);
        }

        /* 4. 一站式AIGC制作 & 核心场景 */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .scene-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            transition: all 0.3s;
        }

        .scene-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
        }

        .scene-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(13, 148, 136, 0.1);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

        .scene-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .scene-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 5. 全行业解决方案 */
        .solutions-tabs {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.2s;
        }

        .tab-btn.active, .tab-btn:hover {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

        .solutions-content {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }

        .solution-pane {
            display: none;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .solution-pane.active {
            display: grid;
        }

        .solution-info h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .solution-info p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .solution-list {
            list-style: none;
        }

        .solution-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .solution-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: 700;
        }

        .solution-media {
            background: linear-gradient(135deg, rgba(37,99,235,0.05), rgba(13,148,136,0.05));
            border-radius: var(--radius);
            padding: 30px;
            text-align: center;
            border: 1px solid var(--border);
        }

        /* 6. 全国服务网络 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 48px;
            align-items: center;
        }

        .network-map-placeholder {
            background: radial-gradient(circle, rgba(13,148,136,0.1) 0%, transparent 70%);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 60px;
            text-align: center;
        }

        .network-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        /* 7. 标准化AIGC流程 */
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 2px;
            background: var(--border);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -1px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            right: -8px;
            background-color: #ffffff;
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -8px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--bg-card);
            position: relative;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        /* 8. 技术标准 */
        .tech-standards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .tech-card {
            background: var(--bg-card);
            border-top: 4px solid var(--primary);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        /* 9. 客户案例中心 (包含真实图片) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .case-img-wrap {
            position: relative;
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #f1f5f9;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

        .case-card:hover .case-img-wrap img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--secondary);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .case-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 10. 对比评测 (核心要求) */
        .comparison-wrap {
            max-width: 900px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .rating-hero {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            padding: 40px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .rating-stars {
            font-size: 2rem;
            color: #fbbf24;
        }

        .rating-score {
            font-size: 3.5rem;
            font-weight: 900;
            line-height: 1;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .compare-table th, .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
        }

        .compare-table th {
            background-color: var(--bg-soft);
            font-weight: 700;
        }

        .compare-table tr:hover {
            background-color: rgba(37,99,235,0.01);
        }

        .text-success {
            color: #10b981;
            font-weight: 700;
        }

        /* 11. 智能需求匹配 + 表单 & 12. Token比价参考 */
        .cta-section-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
        }

        .form-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            transition: all 0.2s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        .token-card {
            background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-soft) 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            height: 100%;
        }

        .token-list {
            list-style: none;
            margin-top: 20px;
        }

        .token-item {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 0.95rem;
        }

        .token-item span:last-child {
            font-weight: 700;
            color: var(--primary);
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .train-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .train-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .train-badge {
            align-self: flex-start;
            padding: 4px 10px;
            background: rgba(13, 148, 136, 0.1);
            color: var(--secondary);
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .train-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .train-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .train-footer {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
        }

        /* 15. 帮助中心 & 16. 常见用户问题 FAQ (10条) & 17. 常见问题自助排查 & 18. AI术语百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 48px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-header {
            padding: 20px 24px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: var(--bg-card);
            transition: background 0.2s;
        }

        .faq-header:hover {
            background: var(--bg-soft);
        }

        .faq-icon {
            font-size: 1.25rem;
            transition: transform 0.2s;
        }

        .faq-content {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            border-top: 0px solid var(--border);
        }

        .faq-item.active .faq-content {
            padding: 20px 24px;
            border-top-width: 1px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .help-side-widgets {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .widget-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
        }

        .widget-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            border-left: 4px solid var(--secondary);
            padding-left: 12px;
        }

        .troubleshoot-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .troubleshoot-list li {
            font-size: 0.9rem;
            color: var(--text-muted);
            position: relative;
            padding-left: 20px;
        }

        .troubleshoot-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 900;
        }

        .glossary-wrap {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .glossary-item h5 {
            font-weight: 700;
            margin-bottom: 4px;
            font-size: 0.95rem;
        }

        .glossary-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 19. 行业资讯 / 知识库 & 客户评论卡片 (6条) */
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 56px;
        }

        .feedback-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .feedback-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .feedback-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .feedback-meta h4 {
            font-size: 0.95rem;
            font-weight: 700;
        }

        .feedback-meta p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .feedback-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-style: italic;
        }

        /* 新闻/知识库模块 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-header {
            padding: 24px 24px 12px;
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-title-link {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.2s;
        }

        .news-title-link:hover {
            color: var(--primary);
        }

        .news-footer {
            padding: 12px 24px 24px;
            border-top: 1px solid var(--border);
        }

        /* 20. 联系我们 & 21. 加盟代理 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: flex-start;
        }

        .contact-info-wrap {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .contact-channel {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .contact-icon-box {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .contact-text h4 {
            font-weight: 700;
            margin-bottom: 4px;
        }

        .contact-text p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .qr-codes {
            display: flex;
            gap: 24px;
            margin-top: 16px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 4px;
            background: #ffffff;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.85rem;
            font-weight: 600;
        }

        .partner-card {
            background: linear-gradient(135deg, rgba(37,99,235,0.03) 0%, rgba(13,148,136,0.03) 100%);
            border: 2px solid var(--primary);
            border-radius: var(--radius);
            padding: 40px;
            height: 100%;
        }

        .partner-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .partner-card p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* 友情链接与页脚 */
        .footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid #1e293b;
        }

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

        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
        }

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

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .friend-links-box {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-bottom: 24px;
        }

        .friend-links-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: #64748b;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .friend-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friend-links-container a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s;
        }

        .friend-links-container a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 浮动客服入口 */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            color: var(--text-main);
            text-decoration: none;
        }

        .float-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

        .float-qr-box {
            position: absolute;
            bottom: 60px;
            right: 0;
            width: 200px;
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 16px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
        }

        .float-qr-box img {
            width: 100%;
            height: auto;
            border-radius: 6px;
        }

        .float-qr-box p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 8px;
            font-weight: 600;
        }

        .float-btn-kefu:hover + .float-qr-box,
        .float-qr-box:hover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.75rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .cta-section-grid, .help-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .scenes-grid, .tech-standards, .cases-grid, .train-grid, .feedback-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item::after {
                left: 23px;
            }
            .right {
                left: 0%;
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .header-actions .btn-outline {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 2.25rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .scenes-grid, .tech-standards, .cases-grid, .train-grid, .feedback-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .solution-pane {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }