:root {
            --primary: #0d9488;
            --primary-light: #14b8a6;
            --primary-dark: #0f766e;
            --secondary: #0ea5e9;
            --accent: #2dd4bf;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-base: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --max-width: 1200px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            font-family: var(--font-sans);
            scroll-behavior: smooth;
            color: var(--text-main);
            background-color: var(--bg-base);
            -webkit-font-smoothing: antialiased;
        }

        body {
            line-height: 1.6;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        .section-bg-alt {
            background-color: #f1f5f9;
        }

        .section-bg-gradient {
            background: linear-gradient(185deg, #f0fdfa 0%, #e0f2fe 100%);
        }

        /* 统一标题组件 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.25rem;
            color: #0f172a;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            margin: 8px auto 0;
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(13, 148, 136, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.3);
            opacity: 0.95;
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: rgba(13, 148, 136, 0.05);
            transform: translateY(-2px);
        }

        /* 顶部导航 */
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

        .navbar-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .brand {
            display: flex;
            align-items: center;
            text-decoration: none;
        }

        .brand img {
            height: 40px;
            width: auto;
            margin-right: 10px;
        }

        .brand-text {
            font-size: 1.3rem;
            font-weight: 700;
            background: linear-gradient(90deg, var(--primary-dark), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* Hero首屏 - 严禁出现任何图片 */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgba(20, 184, 166, 0.08) 0%, rgba(14, 165, 233, 0.05) 90%), #ffffff;
            padding: 100px 0 120px;
            overflow: hidden;
        }

        .hero-content {
            max-width: 850px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 10;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(13, 148, 136, 0.1);
            color: var(--primary-dark);
            border-radius: 30px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(13, 148, 136, 0.2);
        }

        .hero-content h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: #0f172a;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 40px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 关于我们与技术标准 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-info h3 {
            font-size: 1.8rem;
            color: #0f172a;
            margin-bottom: 20px;
        }

        .about-info p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.7;
        }

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

        .tech-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
        }

        .tech-icon {
            width: 24px;
            height: 24px;
            background: rgba(13, 148, 136, 0.1);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: bold;
            font-size: 0.8rem;
        }

        .tech-text h4 {
            font-size: 1rem;
            color: #0f172a;
            margin-bottom: 4px;
        }

        .tech-text p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 全平台AIGC服务 / 模型聚合 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: #0f172a;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tag {
            background: #f1f5f9;
            color: var(--text-main);
            padding: 3px 8px;
            font-size: 0.75rem;
            border-radius: 4px;
        }

        /* 聚合的模型展示标签云 */
        .model-cloud-wrapper {
            margin-top: 40px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
        }

        .model-cloud-title {
            font-size: 1.1rem;
            color: #0f172a;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .model-tag {
            background: linear-gradient(135deg, #f0fdfa, #f0f9ff);
            border: 1px solid rgba(13, 148, 136, 0.15);
            color: var(--primary-dark);
            padding: 6px 14px;
            font-size: 0.85rem;
            border-radius: 20px;
            font-weight: 500;
            transition: all 0.2s;
        }

        .model-tag:hover {
            background: var(--primary);
            color: #ffffff;
            transform: scale(1.05);
        }

        /* 一站式AIGC制作与流程 */
        .prod-timeline {
            position: relative;
            max-width: 900px;
            margin: 40px auto 0;
        }

        .prod-timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            width: 2px;
            height: 100%;
            background: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            margin-bottom: 40px;
            position: relative;
        }

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

        .timeline-badge {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            box-shadow: 0 0 0 8px #ffffff;
        }

        .timeline-content {
            width: 45%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
        }

        .timeline-content h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: #0f172a;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 解决方案与服务网络 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .solution-card {
            background: var(--bg-card);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s;
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px rgba(0, 0, 0, 0.05);
        }

        .solution-body {
            padding: 24px;
        }

        .solution-body h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: #0f172a;
        }

        .solution-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .network-bar {
            margin-top: 40px;
            background: linear-gradient(90deg, #0f766e, #0284c7);
            color: #ffffff;
            border-radius: 12px;
            padding: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .network-info h3 {
            font-size: 1.3rem;
            margin-bottom: 6px;
        }

        .network-info p {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        /* 对比评测表格 */
        .comparison-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
        }

        .rating-badge {
            background: linear-gradient(135deg, #fffbeb, #fef3c7);
            border: 1px solid #fde047;
            border-radius: 12px;
            padding: 24px;
            display: flex;
            align-items: center;
            justify-content: space-around;
            max-width: 600px;
            margin: 0 auto 40px;
            text-align: center;
        }

        .rating-score {
            font-size: 3rem;
            font-weight: 800;
            color: #d97706;
        }

        .rating-stars {
            color: #eab308;
            font-size: 1.5rem;
            margin-bottom: 4px;
        }

        .table-responsive {
            overflow-x: auto;
        }

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

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

        .comparison-table th {
            background-color: #f8fafc;
            color: #0f172a;
            font-weight: 600;
        }

        .comparison-table tr:hover {
            background-color: #f8fafc;
        }

        .highlight-col {
            background-color: rgba(13, 148, 136, 0.03);
            font-weight: 600;
        }

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

        /* Token 比价参考与价格表格 */
        .pricing-section {
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 40px;
            margin-top: 30px;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .price-card {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            background: #f8fafc;
            transition: all 0.3s;
        }

        .price-card.popular {
            border-color: var(--primary);
            background: linear-gradient(180deg, rgba(13, 148, 136, 0.02) 0%, #ffffff 100%);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
            position: relative;
        }

        .price-card.popular::after {
            content: '首选方案';
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--primary);
            color: white;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 10px;
        }

        .price-card h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .price-val {
            font-size: 1.8rem;
            color: var(--primary-dark);
            font-weight: 700;
            margin: 15px 0;
        }

        .price-features {
            list-style: none;
            margin-bottom: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .price-features li {
            margin-bottom: 8px;
        }

        /* 培训中心与合伙人 */
        .train-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .train-card, .agent-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 36px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
        }

        .train-card h3, .agent-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: #0f172a;
        }

        .train-list {
            margin-bottom: 24px;
        }

        .train-item-sub {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            justify-content: space-between;
            font-size: 0.95rem;
        }

        .train-item-sub span:first-child {
            font-weight: 500;
            color: #0f172a;
        }

        .train-item-sub span:last-child {
            color: var(--primary-dark);
            font-size: 0.85rem;
            background: rgba(13, 148, 136, 0.08);
            padding: 2px 6px;
            border-radius: 4px;
        }

        /* 案例与客户评论 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-img-placeholder {
            background: linear-gradient(135deg, #0d9488, #0ea5e9);
            color: #ffffff;
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 600;
        }

        .case-content {
            padding: 24px;
        }

        .case-content h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: #0f172a;
        }

        .case-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        /* 评论网格 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 50px;
        }

        .comment-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 0.95rem;
            color: var(--text-main);
            line-height: 1.6;
            margin-bottom: 16px;
            font-style: italic;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .comment-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary);
        }

        .comment-info h4 {
            font-size: 0.9rem;
            color: #0f172a;
        }

        .comment-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 & 自助排查 & 百科 */
        .faq-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: var(--bg-card);
            overflow: hidden;
        }

        .faq-header {
            width: 100%;
            padding: 18px 24px;
            text-align: left;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: #0f172a;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.2s;
        }

        .faq-header:hover {
            background-color: #f8fafc;
        }

        .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s;
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #fafbfc;
        }

        .faq-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            line-height: 1.6;
        }

        .faq-side-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .faq-side-section h4 {
            font-size: 1.1rem;
            color: #0f172a;
            margin-bottom: 12px;
            border-left: 3px solid var(--primary);
            padding-left: 8px;
        }

        .wiki-list, .trouble-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .wiki-list a, .trouble-list li {
            font-size: 0.9rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s;
        }

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

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: transform 0.2s;
        }

        .news-card:hover {
            transform: translateY(-3px);
        }

        .news-card h3 {
            font-size: 1.1rem;
            color: #0f172a;
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .news-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .news-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
        }

        .news-link:hover {
            text-decoration: underline;
        }

        /* 表单 & 联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #334155;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            transition: border-color 0.2s;
            background-color: #f8fafc;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #ffffff;
        }

        .contact-info-wrapper {
            background: linear-gradient(135deg, #0f766e, #0f172a);
            color: #ffffff;
            border-radius: 16px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-details h3 {
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .contact-item strong {
            display: block;
            font-size: 0.8rem;
            opacity: 0.7;
            text-transform: uppercase;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-box {
            background: #ffffff;
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            width: 120px;
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            display: block;
            margin-bottom: 6px;
        }

        .qr-box span {
            font-size: 0.75rem;
            color: var(--text-main);
            font-weight: 600;
        }

        /* 友情链接 */
        .friendship-links {
            background: #f1f5f9;
            padding: 24px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .friendship-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
            font-size: 0.875rem;
        }

        .friendship-links-container span {
            font-weight: 600;
            color: var(--text-muted);
        }

        .friendship-links-container a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s;
        }

        .friendship-links-container a:hover {
            color: var(--primary);
        }

        /* 页脚 */
        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 1.25rem;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .footer-links h5 {
            color: #ffffff;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 浮动工具栏 */
        .floating-bar {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            cursor: pointer;
            position: relative;
            transition: all 0.3s;
        }

        .float-btn:hover {
            background: var(--primary);
            color: #ffffff;
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #ffffff;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            display: none;
            text-align: center;
        }

        .float-qr img {
            width: 120px;
            height: 120px;
            display: block;
            margin-bottom: 6px;
        }

        .float-qr span {
            font-size: 0.75rem;
            color: var(--text-main);
            white-space: nowrap;
        }

        .float-btn:hover .float-qr {
            display: block;
        }

        .back-to-top {
            display: none;
        }

        .back-to-top.active {
            display: flex;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .solutions-grid, .comments-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .train-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .faq-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.05);
            }

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

            .nav-toggle {
                display: flex;
            }

            .hero-content h1 {
                font-size: 2.2rem;
            }

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

            .timeline-item {
                flex-direction: column !important;
                align-items: flex-start;
                margin-bottom: 30px;
            }

            .timeline-content {
                width: 100%;
                margin-left: 0;
            }

            .timeline-badge {
                position: relative;
                left: 0;
                transform: none;
                box-shadow: none;
                margin-bottom: 12px;
            }

            .prod-timeline::before {
                display: none;
            }

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

            .stats-grid, .service-grid, .solutions-grid, .comments-grid, .news-grid, .cases-grid {
                grid-template-columns: 1fr;
            }
        }