:root {
            --primary: #0052cc;
            --primary-light: #e6f0ff;
            --primary-dark: #0b379b;
            --secondary: #00b0ff;
            --accent: #00e5ff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --shadow: 0 10px 15px -3px rgba(0, 82, 204, 0.05), 0 4px 6px -2px rgba(0, 82, 204, 0.02);
            --shadow-hover: 0 20px 25px -5px rgba(0, 82, 204, 0.1), 0 10px 10px -5px rgba(0, 82, 204, 0.04);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            line-height: 1.6;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }

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

        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .nav-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .nav-links .ai-page-home-link {
            color: var(--primary);
            font-weight: bold;
        }

        .nav-btn {
            background-color: var(--primary);
            color: white;
            padding: 8px 20px;
            border-radius: 6px;
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            transition: var(--transition);
        }

        /* 基础结构 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-white);
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
            display: inline-block;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 15px;
        }

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

        /* Hero首屏 - 绝对无图片 */
        #hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        #hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0,176,255,0.1) 0%, rgba(255,255,255,0) 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            background-color: rgba(0, 82, 204, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--primary-dark);
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 60px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 6px rgba(0, 82, 204, 0.15);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 15px rgba(0, 82, 204, 0.25);
        }

        .btn-secondary {
            background-color: white;
            color: var(--primary);
            border: 1px solid var(--primary);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: white;
            padding: 24px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 82, 204, 0.05);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .about-text h3 {
            font-size: 24px;
            color: var(--primary-dark);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 16px;
            line-height: 1.8;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .about-feat-item {
            background-color: var(--bg-light);
            padding: 16px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .about-feat-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .about-feat-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* 全平台AIGC服务体系 & 标签云 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 50px;
        }

        .service-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: 12px;
            transition: var(--transition);
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 标签云 */
        .platform-cloud {
            background-color: var(--bg-light);
            padding: 32px;
            border-radius: 16px;
            text-align: center;
            border: 1px dashed var(--primary);
        }

        .platform-cloud h4 {
            font-size: 18px;
            margin-bottom: 20px;
            color: var(--primary-dark);
        }

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

        .cloud-tag {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
        }

        .cloud-tag:hover {
            background-color: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        /* 全自动AIGC制作流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--primary-light);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

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

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

        .left-item {
            left: 0;
            text-align: right;
        }

        .right-item {
            left: 50%;
        }

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

        .timeline-content {
            padding: 20px;
            background-color: var(--bg-light);
            position: relative;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .timeline-content h3 {
            font-size: 18px;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 解决方案、服务网络、服务流程、技术标准 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

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

        .solution-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .solution-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 案例中心 - 带指定图片 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .case-img-box {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: var(--bg-light);
        }

        .case-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 对比评测板块 */
        .evaluation-box {
            background-color: var(--bg-white);
            border: 2px solid var(--primary);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-hover);
        }

        .eval-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 24px;
            margin-bottom: 24px;
        }

        .eval-score-box {
            text-align: right;
        }

        .eval-score {
            font-size: 48px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .eval-stars {
            color: #f59e0b;
            font-size: 20px;
            margin-top: 4px;
        }

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

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

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

        .eval-table th {
            font-weight: 700;
            color: var(--text-main);
            background-color: var(--bg-light);
        }

        .eval-table tr:hover {
            background-color: rgba(0, 82, 204, 0.02);
        }

        .text-highlight {
            color: var(--primary);
            font-weight: 700;
        }

        /* Token 比价参考 & 价格参考 */
        .token-pricing {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .price-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }

        .price-card.popular {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            position: relative;
        }

        .price-card.popular::before {
            content: '推荐通道';
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: var(--primary);
            color: white;
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 30px;
        }

        .price-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .price-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .price-num span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: normal;
        }

        .price-list {
            list-style: none;
            text-align: left;
            margin-bottom: 24px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .price-list li {
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-list li::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
        }

        /* 人工智能培训 & 证书展示 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .train-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }

        .train-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .train-card h3 {
            font-size: 16px;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }

        .train-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* FAQ 折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            margin-bottom: 12px;
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 20px;
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        /* 自助排查 & 术语百科 */
        .trouble-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .trouble-box, .wiki-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
        }

        .trouble-box h3, .wiki-box h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: var(--primary-dark);
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 10px;
        }

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

        .list-unstyled li {
            margin-bottom: 12px;
            font-size: 14px;
        }

        .list-unstyled strong {
            color: var(--text-main);
        }

        /* 客户评论卡片 (6条) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 16px;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .author-info h4 {
            font-size: 14px;
            color: var(--text-main);
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 行业资讯 / 知识库 */
        .articles-list {
            max-width: 800px;
            margin: 0 auto;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
        }

        .article-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .article-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .article-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 需求匹配与联系我们表单 */
        .contact-section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-bottom: 30px;
        }

        .info-card {
            background-color: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .info-card h4 {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .info-card p {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
        }

        .qr-codes {
            display: flex;
            gap: 30px;
            align-items: center;
        }

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

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

        .qr-item p {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .form-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }

        .form-title {
            font-size: 22px;
            margin-bottom: 24px;
            color: var(--primary-dark);
            font-weight: 700;
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.1);
        }

        .form-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: white;
            padding: 14px;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            background-color: var(--primary-dark);
        }

        /* 页脚 */
        footer {
            background-color: #0b1e43;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: none;
        }

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

        .footer-brand h3 {
            color: white;
            margin-bottom: 16px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-links h4 {
            color: white;
            font-size: 16px;
            margin-bottom: 20px;
        }

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

        .footer-links ul li {
            margin-bottom: 12px;
        }

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links ul li a:hover {
            color: var(--secondary);
        }

        .footer-friendships h4 {
            color: white;
            font-size: 16px;
            margin-bottom: 20px;
        }

        .footer-friendships .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-friendships a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 13px;
            background-color: rgba(255,255,255,0.05);
            padding: 4px 10px;
            border-radius: 4px;
            transition: var(--transition);
        }

        .footer-friendships a:hover {
            color: white;
            background-color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* 浮动客服 & 返回顶部 */
        .floating-bar {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            transition: var(--transition);
            text-decoration: none;
            font-size: 12px;
            text-align: center;
            line-height: 1.2;
            font-weight: 500;
        }

        .float-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .float-qr-box {
            position: relative;
        }

        .float-qr-img {
            position: absolute;
            right: 60px;
            bottom: 0;
            width: 150px;
            height: 150px;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 8px;
            display: none;
            box-shadow: var(--shadow-hover);
        }

        .float-qr-box:hover .float-qr-img {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .hero-title {
                font-size: 32px;
            }
            .about-grid, .contact-section-grid, .trouble-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .timeline::after {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 40px;
                padding-right: 0;
                text-align: left;
            }
            .timeline-item::after {
                left: 12px;
            }
            .left-item {
                left: 0;
                text-align: left;
            }
            .services-grid, .solutions-grid, .cases-grid, .reviews-grid, .token-pricing, .training-grid {
                grid-template-columns: 1fr;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: white;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }