:root {
            --primary: #0d9488;
            --primary-light: #0ea5e9;
            --primary-dark: #0f766e;
            --bg-base: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --border: #e2e8f0;
            --gradient: linear-gradient(135deg, #0d9488 0%, #0ea5e9 100%);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.02);
            --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, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-base);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.5rem;
            border-radius: 0.5rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--gradient);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
        }

        .btn-primary:hover {
            opacity: 0.95;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
        }

        .btn-secondary {
            background-color: #f1f5f9;
            color: var(--text-main);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            background-color: #e2e8f0;
            transform: translateY(-2px);
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4.5rem;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            color: var(--text-main);
            font-weight: 700;
            font-size: 1.25rem;
        }

        .ai-page-logo {
            height: 2.2rem;
            width: auto;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            list-style: none;
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

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

        /* Section 通用样式 */
        section {
            padding: 5rem 0;
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 3.5rem auto;
        }

        .section-tag {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 9999px;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 1rem;
        }

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

        /* 1. Hero 首页区 (严格禁止任何图片) */
        .hero {
            position: relative;
            background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(13, 148, 136, 0.08) 0%, transparent 50%);
            padding: 7.5rem 0 6rem 0;
            overflow: hidden;
        }

        .hero-content {
            text-align: center;
            max-width: 850px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 1rem;
            background-color: rgba(13, 148, 136, 0.06);
            border: 1px solid rgba(13, 148, 136, 0.15);
            border-radius: 9999px;
            color: var(--primary-dark);
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 1.75rem;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.02); }
            100% { transform: scale(1); }
        }

        .hero-title {
            font-size: 3.25rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 1.5rem;
            letter-spacing: -0.02em;
        }

        .hero-title span {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            line-height: 1.6;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1.25rem;
            margin-bottom: 3.5rem;
        }

        /* 2. 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .stat-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 1.75rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.25rem;
        }

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

        /* 3. 关于我们与平台介绍 */
        .about-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3.5rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.75rem;
            margin-bottom: 1rem;
            color: var(--text-main);
        }

        .about-desc {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        .features-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.95rem;
            color: var(--text-main);
            font-weight: 500;
        }

        .feature-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .about-interactive {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 2.25rem;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .interactive-title {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .interactive-badge {
            background-color: #f1f5f9;
            border-radius: 0.5rem;
            padding: 1rem;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            border-left: 4px solid var(--primary);
        }

        /* 4. 全平台AIGC服务体系 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .service-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .service-icon {
            width: 3rem;
            height: 3rem;
            border-radius: 0.5rem;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.25rem;
            font-size: 1.5rem;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.25rem;
        }

        /* 5. 技术标准 - 模型云 */
        .model-cloud-wrapper {
            margin-top: 3.5rem;
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 2rem;
            text-align: center;
        }

        .model-cloud-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text-muted);
        }

        .tags-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
        }

        .tag-pill {
            background-color: #f1f5f9;
            color: var(--text-muted);
            padding: 0.35rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .tag-pill:hover {
            background-color: rgba(13, 148, 136, 0.08);
            color: var(--primary-dark);
            border-color: rgba(13, 148, 136, 0.2);
        }

        /* 6. 全自动AIGC制作流程 & 标准化服务流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .process-step {
            position: relative;
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            z-index: 2;
        }

        .step-num {
            position: absolute;
            top: 1rem;
            right: 1.5rem;
            font-size: 2.5rem;
            font-weight: 900;
            color: rgba(13, 148, 136, 0.1);
            line-height: 1;
        }

        .process-step h3 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
            margin-top: 1rem;
        }

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

        /* 7. 全行业解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }

        .solution-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 2.25rem;
            display: flex;
            gap: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .solution-info h3 {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
        }

        .solution-info p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }

        .solution-features {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .sol-tag {
            background-color: #f8fafc;
            border: 1px solid var(--border);
            padding: 0.25rem 0.5rem;
            font-size: 0.8rem;
            border-radius: 0.25rem;
            color: var(--text-muted);
        }

        /* 8. 对比评测 */
        .compare-section {
            background-color: #ffffff;
        }

        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            background-color: #f0fdfa;
            border: 1px solid rgba(13, 148, 136, 0.2);
            border-radius: 1rem;
            padding: 2rem;
            max-width: 700px;
            margin: 0 auto 3rem auto;
        }

        .score-big {
            font-size: 4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-meta h4 {
            font-size: 1.25rem;
            margin-bottom: 0.25rem;
        }

        .stars {
            color: #f59e0b;
            font-size: 1.2rem;
            margin-top: 0.25rem;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            background-color: var(--bg-card);
        }

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

        .compare-table th, .compare-table td {
            padding: 1rem 1.5rem;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }

        .compare-table th {
            background-color: #f8fafc;
            font-weight: 700;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .highlight-col {
            background-color: rgba(13, 148, 136, 0.02);
            font-weight: 600;
            color: var(--primary-dark);
        }

        /* 9. Token比价参考 */
        .pricing-section {
            background-color: var(--bg-base);
        }

        /* 10. 职业技术培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .training-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .cert-authority {
            display: inline-block;
            background-color: #fef2f2;
            color: #ef4444;
            padding: 0.25rem 0.5rem;
            border-radius: 0.25rem;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .training-card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.75rem;
        }

        .training-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.25rem;
        }

        .training-features {
            list-style: none;
            font-size: 0.85rem;
            color: var(--text-main);
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .training-features li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .training-features li svg {
            color: var(--primary);
        }

        /* 11. 全国服务网络 */
        .network-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3.5rem;
            align-items: center;
        }

        .network-map-placeholder {
            background-color: #f1f5f9;
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 3rem;
            text-align: center;
            font-weight: 600;
            color: var(--text-muted);
            min-height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 1rem;
            background-image: radial-gradient(circle, #e2e8f0 1.5px, transparent 1.5px);
            background-size: 24px 24px;
        }

        .region-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        .region-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            padding: 1rem;
            font-weight: 500;
        }

        .region-item span {
            display: block;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
        }

        /* 12. 客户案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .case-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .case-img-wrapper {
            position: relative;
            background-color: #f1f5f9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

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

        .case-badge {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background-color: rgba(15, 23, 42, 0.85);
            color: #ffffff;
            font-size: 0.75rem;
            padding: 0.25rem 0.5rem;
            border-radius: 0.25rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .case-info {
            padding: 1.5rem;
        }

        .case-info h3 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        .case-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 13. 智能需求匹配与联系表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 3.5rem;
        }

        .contact-info-panel {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            margin-bottom: 1.75rem;
        }

        .info-icon {
            width: 2.5rem;
            height: 2.5rem;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .info-text h4 {
            font-size: 1rem;
            margin-bottom: 0.25rem;
        }

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

        .form-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 2.5rem;
            box-shadow: var(--shadow-lg);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
            margin-bottom: 1.25rem;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .form-group-full {
            grid-column: span 2;
        }

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

        .form-input {
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            outline: none;
            transition: var(--transition);
            background-color: #f8fafc;
            font-size: 0.95rem;
        }

        .form-input:focus {
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
        }

        /* 14. 帮助中心、自助排查、术语百科 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .help-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
        }

        .help-card h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .help-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .help-list li a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .help-list li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        /* 15. FAQ 折叠面板 (不少于 10 条) */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-trigger {
            width: 100%;
            padding: 1.25rem 1.5rem;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            outline: none;
        }

        .faq-trigger svg {
            transition: var(--transition);
            color: var(--text-muted);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            background-color: rgba(248, 250, 252, 0.5);
        }

        .faq-content-inner {
            padding: 1.25rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
        }

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

        .faq-item.active .faq-trigger svg {
            transform: rotate(180deg);
            color: var(--primary);
        }

        /* 16. 客户评论卡片 (6 条) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .review-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .user-avatar-placeholder {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .user-info h4 {
            font-size: 0.9rem;
            margin-bottom: 0.1rem;
        }

        .user-info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 17. 行业资讯 / 知识库  */
        .articles-wrapper {
            margin-top: 2rem;
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            list-style: none;
        }

        .article-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .article-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }

        .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 1rem;
        }

        .article-title a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #f8fafc;
            padding: 4rem 0 2rem 0;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            position: relative;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-links li a {
            color: #cbd5e1;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links li a:hover {
            color: var(--primary-light);
        }

        .footer-contact-info {
            font-size: 0.9rem;
            color: #cbd5e1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-qrcode {
            margin-top: 1rem;
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .footer-qrcode img {
            width: 80px;
            height: 80px;
            border-radius: 0.25rem;
            border: 2px solid #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.85rem;
            color: #94a3b8;
        }

        .footer-bottom-links {
            display: flex;
            gap: 1.5rem;
        }

        .footer-bottom-links a {
            color: #cbd5e1;
            text-decoration: none;
        }

        .footer-bottom-links a:hover {
            color: var(--primary-light);
        }

        /* 友情链接 */
        .friendship-links {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1e293b;
            font-size: 0.8rem;
            color: #94a3b8;
        }

        .friendship-links a {
            color: #94a3b8;
            text-decoration: none;
            margin-right: 1.5rem;
            transition: var(--transition);
            display: inline-block;
        }

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

        /* 浮动客服 */
        .floating-contact {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .float-btn {
            width: 3.5rem;
            height: 3.5rem;
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            transition: var(--transition);
            color: var(--text-main);
            position: relative;
        }

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

        .float-qrcode-box {
            position: absolute;
            bottom: 4rem;
            right: 0;
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            padding: 1rem;
            border-radius: 0.5rem;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 150px;
        }

        .float-qrcode-box img {
            width: 120px;
            height: 120px;
            margin-bottom: 0.5rem;
        }

        .float-qrcode-box p {
            font-size: 0.75rem;
            color: var(--text-main);
            font-weight: 600;
        }

        .float-btn:hover .float-qrcode-box {
            display: block;
        }

        /* 移动端适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid, .process-flow, .training-grid, .cases-grid, .help-grid, .reviews-grid, .articles-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 4.5rem;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1rem;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-title {
                font-size: 2.25rem;
            }
            .about-layout, .network-layout, .contact-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .stats-grid, .service-grid, .process-flow, .training-grid, .cases-grid, .help-grid, .reviews-grid, .articles-list {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }