:root {
            --primary: #008080;
            --primary-light: #00c2c2;
            --primary-dark: #004d4d;
            --secondary: #00b4d8;
            --accent: #2a9d8f;
            --bg-light: #f4fafb;
            --bg-white: #ffffff;
            --text-dark: #1f2d3d;
            --text-muted: #5e6d82;
            --border-color: #e2eff1;
            --shadow-sm: 0 2px 8px rgba(0, 128, 128, 0.05);
            --shadow-md: 0 8px 24px rgba(0, 128, 128, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 128, 128, 0.12);
            --transition: all 0.3s ease;
        }

        * {
            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-dark);
            background-color: var(--bg-light);
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

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

        ul {
            list-style: none;
        }

        /* 统一容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-padding {
            padding: 80px 0;
        }

        /* 渐变青科技风背景装饰 */
        .tech-bg-gradient {
            background: linear-gradient(135deg, rgba(0,180,216,0.05) 0%, rgba(0,128,128,0.02) 100%);
        }

        /* 导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 1px;
        }

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

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            background-color: rgba(0, 128, 128, 0.05);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 10px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
        }

        .nav-btn:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 180, 216, 0.4);
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 首页 Hero（首屏无图片） */
        .hero-section {
            padding: 120px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.1) 0%, transparent 50%), 
                        linear-gradient(180deg, #ffffff 0%, var(--bg-light) 100%);
            position: relative;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 180, 216, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 180, 216, 0.2);
        }

        /* H1 字数控制在20字内 */
        .hero-title {
            font-size: 42px;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 800;
        }

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

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 14px 30px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 15px rgba(0, 128, 128, 0.2);
        }

        .btn-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 128, 128, 0.3);
        }

        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

        .stat-card {
            background: #fff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            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: 32px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        /* section头部 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 15px;
            position: relative;
            padding-bottom: 12px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 16px;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 24px;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
            line-height: 1.8;
        }

        .about-list {
            margin-bottom: 30px;
        }

        .about-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--text-dark);
            font-weight: 500;
        }

        .about-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: 900;
        }

        .about-highlights {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .highlight-item {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .highlight-title {
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 5px;
            font-size: 16px;
        }

        .highlight-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #fff;
            padding: 35px 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 180, 216, 0.1);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .service-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .service-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 支持的 AI 平台标签云 */
        .tags-container {
            margin-top: 40px;
            padding: 30px;
            background: #fff;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .tags-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

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

        .tag-item {
            font-size: 13px;
            padding: 6px 14px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            color: var(--primary-dark);
            border-radius: 30px;
            transition: var(--transition);
            cursor: default;
        }

        .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* 一站式AIGC制作 & 案例 */
        .showcase-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .showcase-images {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .showcase-img-container {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .showcase-img-container.wide {
            grid-column: span 2;
        }

        .showcase-img-container img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
            object-fit: cover;
        }

        .showcase-img-container img:hover {
            transform: scale(1.05);
        }

        /* 解决方案 & 流程 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .solution-card {
            background: #fff;
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .solution-card h3 {
            font-size: 18px;
            color: var(--primary-dark);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--bg-light);
            padding-bottom: 10px;
        }

        /* 全国网络与时间线 */
        .network-section {
            background-color: var(--bg-white);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-map {
            background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, transparent 70%);
            padding: 40px;
            border-radius: 12px;
            text-align: center;
            border: 1px dashed var(--primary-light);
        }

        .network-points {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .network-point {
            background: #fff;
            padding: 15px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        /* 流程步骤 */
        .steps-container {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            position: relative;
        }

        .step-item {
            flex: 1;
            background: #fff;
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px;
            font-size: 18px;
            box-shadow: 0 4px 10px rgba(0, 128, 128, 0.3);
        }

        /* 技术标准 */
        .standards-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .standard-item {
            display: flex;
            gap: 15px;
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .standard-dot {
            color: var(--primary);
            font-size: 20px;
            line-height: 1;
        }

        .standard-info h4 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 5px;
        }

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

        /* 案例中心 & 宣传图 */
        .cases-section {
            background-color: var(--bg-light);
        }

        .case-showcase {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
            background: #fff;
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

        .case-image-wrapper img {
            width: 100%;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            display: block;
        }

        /* 客户评论 */
        .reviews-title {
            font-size: 20px;
            font-weight: 700;
            margin: 40px 0 20px;
            color: var(--text-dark);
            text-align: center;
        }

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

        .review-card {
            background: #fff;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .review-content {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
            font-style: italic;
        }

        .review-author {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 14px;
        }

        .review-role {
            font-size: 12px;
            color: var(--primary);
            margin-top: 2px;
        }

        /* 对比评测 & Token比价 */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .comparison-score-card {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: #fff;
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .score-title {
            font-size: 18px;
            opacity: 0.9;
            margin-bottom: 15px;
        }

        .score-stars {
            color: #ffd700;
            font-size: 28px;
            margin-bottom: 15px;
        }

        .score-number {
            font-size: 64px;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 5px;
        }

        .score-total {
            font-size: 16px;
            opacity: 0.8;
            margin-bottom: 20px;
        }

        .score-features {
            text-align: left;
            font-size: 14px;
            display: grid;
            gap: 8px;
        }

        .score-features li {
            position: relative;
            padding-left: 20px;
        }

        .score-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
        }

        /* 表格响应式包装器 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 500px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

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

        .comparison-table td {
            color: var(--text-muted);
        }

        .comparison-table tr:hover td {
            background-color: rgba(0, 180, 216, 0.02);
        }

        .highlight-td {
            color: var(--primary) !important;
            font-weight: 600;
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .training-card h3 {
            font-size: 15px;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 智能需求匹配表单 & 联系我们 & 加盟代理 */
        .contact-section {
            background-color: var(--bg-white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-container {
            background: #fff;
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background-color: var(--bg-light);
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.1);
        }

        /* 联系信息 */
        .contact-info-panel {
            background: var(--bg-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-block {
            margin-bottom: 30px;
        }

        .info-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }

        .info-content {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            text-align: center;
        }

        .qr-item {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .qr-item img {
            max-width: 130px;
            height: auto;
            margin-bottom: 8px;
        }

        .qr-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
        }

        /* 常见用户问题 FAQ 折叠面板 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

        .faq-header {
            padding: 20px;
            background: #fff;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: var(--transition);
        }

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

        .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

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

        .faq-content {
            padding: 0 20px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.active .faq-body {
            max-height: 200px;
        }

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

        /* AI术语百科 & 自助排查 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .wiki-card {
            background: #fff;
            padding: 24px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .wiki-term {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .wiki-def {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 行业资讯 / 知识库 (最新文章) */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .article-card {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 180px;
            transition: var(--transition);
        }

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

        .article-tag {
            font-size: 11px;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }

        .article-title-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 15px;
        }

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

        .article-more {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
        }

        /* 页脚 */
        footer {
            background-color: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--secondary);
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .footer-links {
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 15px;
        }

        .friend-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            background: rgba(255, 255, 255, 0.05);
            padding: 4px 10px;
            border-radius: 4px;
        }

        .friend-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.15);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            position: relative;
            transition: var(--transition);
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .float-btn svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            top: 50%;
            transform: translateY(-50%) scale(0.9);
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
            width: 150px;
            text-align: center;
        }

        .float-btn .tooltip img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 5px;
        }

        .float-btn .tooltip span {
            font-size: 11px;
            color: var(--text-dark);
            font-weight: 600;
            display: block;
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            transform: translateY(-50%) scale(1);
            pointer-events: auto;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-title { font-size: 32px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .about-grid, .showcase-grid, .network-grid, .comparison-grid, .contact-grid { 
                grid-template-columns: 1fr; 
            }
            .services-grid, .solutions-grid, .reviews-grid, .wiki-grid { 
                grid-template-columns: repeat(2, 1fr); 
            }
            .training-grid, .articles-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-container { flex-direction: column; gap: 15px; }
            .case-showcase { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: flex; }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                box-shadow: var(--shadow-md);
                padding: 20px;
                gap: 15px;
                z-index: 999;
            }
            .nav-links.active { display: flex; }
            .services-grid, .solutions-grid, .reviews-grid, .wiki-grid, .training-grid, .articles-grid, .faq-grid { 
                grid-template-columns: 1fr; 
            }
            .stats-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }