:root {
            --primary: #0066ff;
            --primary-gradient: linear-gradient(135deg, #0066ff 0%, #00f2fe 100%);
            --secondary: #7f00ff;
            --accent: #ff007f;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 10px 30px rgba(0,102,255,0.08);
            --shadow-lg: 0 20px 40px rgba(0,102,255,0.12);
            --radius-lg: 16px;
            --radius-md: 10px;
            --container-width: 1200px;
        }

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

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

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

        /* 统一标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2rem;
            color: var(--text-main);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
            margin-bottom: 12px;
        }
        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            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: 30px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-gradient);
            color: #ffffff;
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            max-height: 40px;
        }
        .brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }
        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }
        .nav-menu a:hover {
            color: var(--primary);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--text-main);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* Section 默认样式 */
        section {
            padding: 80px 0;
        }
        .bg-white {
            background-color: var(--bg-card);
        }

        /* 1. Hero 首屏 - 纯文字/渐变背景/无图 */
        #home {
            background: radial-gradient(circle at 80% 20%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(127, 0, 255, 0.05) 0%, transparent 50%),
                        #ffffff;
            padding: 120px 0 100px 0;
            text-align: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(0, 102, 255, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 102, 255, 0.15);
        }
        #home h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        #home h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 60px;
        }
        .metric-card {
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .metric-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .metric-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 2. 关于我们 (关于我们 + 平台介绍) */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .about-feat-item {
            background: var(--bg-light);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--primary);
        }
        .about-feat-item h4 {
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .about-feat-item p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* 3. AIGC服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-card {
            background: var(--bg-card);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .service-icon {
            width: 60px;
            height: 60px;
            background: rgba(0, 102, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--primary);
        }
        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 4. 一站式制作 */
        .onestop-container {
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.03) 0%, rgba(127, 0, 255, 0.03) 100%);
            border-radius: var(--radius-lg);
            padding: 50px;
            border: 1px solid var(--border-color);
        }
        .onestop-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .onestop-content h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        .onestop-list {
            list-style: none;
        }
        .onestop-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 16px;
            font-size: 1.05rem;
            color: var(--text-muted);
        }
        .onestop-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
            font-size: 1.2rem;
        }

        /* 5. 行业解决方案 & 10. 智能需求匹配 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .solution-card {
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all 0.3s ease;
        }
        .solution-card:hover {
            background: var(--primary-gradient);
            border-color: transparent;
        }
        .solution-card:hover h4, .solution-card:hover p {
            color: #ffffff;
        }
        .solution-card h4 {
            margin-bottom: 12px;
            font-size: 1.15rem;
            color: var(--text-main);
        }
        .solution-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 6. 全国服务网络 */
        .network-section {
            background: #ffffff;
        }
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .network-item {
            background: var(--bg-light);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .network-item h4 {
            color: var(--primary);
            margin-bottom: 8px;
        }
        .network-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 7. 标准化流程 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 4px;
            background: var(--border-color);
            transform: translateX(-50%);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            width: 50%;
            padding: 0 40px;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }
        .timeline-badge {
            position: absolute;
            top: 0;
            left: 100%;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-gradient);
            border: 4px solid var(--bg-light);
            transform: translate(-50%, 0);
            z-index: 10;
        }
        .timeline-item:nth-child(even) .timeline-badge {
            left: 0;
        }
        .timeline-content {
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .timeline-content h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .timeline-content p {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* 8. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .case-img-holder {
            width: 100%;
            height: 200px;
            background-color: #f1f5f9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .case-img-holder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-card:hover .case-img-holder img {
            transform: scale(1.05);
        }
        .case-info {
            padding: 24px;
        }
        .case-tag {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(0, 102, 255, 0.08);
            color: var(--primary);
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .case-info h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .case-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 9. 对比评测 */
        .eval-box {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .eval-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 24px;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 20px;
        }
        .eval-rating {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .rating-stars {
            color: #ffb700;
            font-size: 1.5rem;
        }
        .rating-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
        }
        .rating-num span {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: normal;
        }
        .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;
            border-bottom: 1px solid var(--border-color);
        }
        .compare-table th {
            background-color: var(--bg-light);
            font-weight: 600;
            color: var(--text-main);
        }
        .compare-table tr:hover {
            background-color: rgba(0, 102, 255, 0.02);
        }
        .highlight-col {
            color: var(--primary);
            font-weight: 600;
        }

        /* 11. Token比价 */
        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 15px;
        }
        .token-table-container {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        /* 12 & 13. 职业技术与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .training-card {
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .training-badge-icon {
            font-size: 2rem;
            margin-bottom: 15px;
            display: inline-block;
        }
        .training-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .training-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 14 & 15. 常见用户问题 FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
        }
        .faq-q {
            padding: 20px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.2s;
        }
        .faq-q:hover {
            background-color: rgba(0, 102, 255, 0.02);
        }
        .faq-q::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: transform 0.3s;
        }
        .faq-item.active .faq-q::after {
            content: '-';
            transform: rotate(180deg);
        }
        .faq-a {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 0 solid var(--border-color);
        }
        .faq-item.active .faq-a {
            padding: 20px;
            max-height: 500px;
            border-top: 1px solid var(--border-color);
        }

        /* 16. AI术语百科 & 标签云 */
        .cloud-container {
            background: var(--bg-card);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            text-align: center;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 20px;
        }
        .tag-item {
            padding: 8px 18px;
            background: var(--bg-light);
            color: var(--text-muted);
            border-radius: 20px;
            font-size: 0.9rem;
            text-decoration: none;
            transition: all 0.2s ease;
            border: 1px solid var(--border-color);
        }
        .tag-item:hover {
            background: var(--primary-gradient);
            color: #ffffff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 17. 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s ease;
        }
        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .news-card h4 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .news-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .news-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 18. 联系我们 & 19. 加盟代理 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }
        .form-box {
            background: var(--bg-card);
            padding: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group.full-width {
            grid-column: span 2;
        }
        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
        }
        .form-control {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            outline: none;
            font-size: 0.95rem;
            transition: border-color 0.2s;
        }
        .form-control:focus {
            border-color: var(--primary);
        }
        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .info-card {
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        .info-icon {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .info-detail h4 {
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .info-detail p {
            font-size: 0.95rem;
            color: var(--text-muted);
        }
        .kefu-qrcode {
            text-align: center;
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .kefu-qrcode img {
            max-width: 140px;
            margin-bottom: 12px;
            border-radius: 8px;
        }

        /* 客户评论卡片 */
        .comments-section {
            background: var(--bg-light);
        }
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .comment-card {
            background: var(--bg-card);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .comment-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: bold;
        }
        .user-meta h4 {
            font-size: 0.95rem;
            color: var(--text-main);
        }
        .user-meta p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 宣传图展示 */
        .banner-gallery {
            padding: 40px 0;
            background: #ffffff;
        }
        .banner-flex {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .ai-page-image {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            max-width: calc(50% - 10px);
            height: auto;
            object-fit: cover;
        }

        /* 友情链接与页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-links h4 {
            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;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .friendship-links {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 24px;
            font-size: 0.85rem;
        }
        .friendship-links a {
            color: #64748b;
            text-decoration: none;
            margin-right: 15px;
            display: inline-block;
        }
        .friendship-links a:hover {
            color: #ffffff;
        }
        .copyright {
            text-align: center;
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            margin-top: 30px;
            font-size: 0.85rem;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 1.5rem;
            box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
            cursor: pointer;
            position: relative;
        }
        .qrcode-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            padding: 15px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
            width: 160px;
        }
        .qrcode-popover img {
            width: 130px;
            height: 130px;
            margin-bottom: 8px;
        }
        .qrcode-popover p {
            font-size: 0.75rem;
            color: var(--text-main);
        }
        .float-btn:hover .qrcode-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .metrics-grid, .services-grid, .solutions-grid, .case-grid, .training-grid, .news-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .ai-page-image {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            #home h1 {
                font-size: 2rem;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-sm);
                display: none;
            }
            .nav-menu.active {
                display: flex;
            }
            .about-grid, .onestop-grid, .network-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid, .services-grid, .solutions-grid, .case-grid, .training-grid, .news-grid, .comments-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-badge {
                left: 20px !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
        }