:root {
            --primary-gradient: linear-gradient(135deg, #ff7eb3 0%, #ff758c 100%);
            --secondary-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
            --accent-gradient: linear-gradient(135deg, #fecd1a 0%, #f9b233 100%);
            --purple-gradient: linear-gradient(135deg, #b180f9 0%, #7d3cf3 100%);
            --green-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
            
            --bg-main: #f8fafc;
            --bg-card: rgba(255, 255, 255, 0.9);
            --text-main: #0f172a;
            --text-muted: #475569;
            --border-color: rgba(241, 245, 249, 0.8);
            
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 20px 25px -5px rgba(100, 110, 140, 0.1), 0 8px 10px -6px rgba(100, 110, 140, 0.1);
        }

        * {
            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-main);
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.5);
            box-shadow: var(--shadow-sm);
        }

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

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

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

        nav {
            display: flex;
            gap: 20px;
        }

        nav a, .ai-page-home-link {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }

        nav a:hover, .ai-page-home-link:hover {
            color: #ff758c;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            border-radius: 99px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            border: none;
        }

        .btn-candy {
            background: var(--primary-gradient);
            color: white;
            box-shadow: 0 10px 20px rgba(255, 117, 140, 0.3);
        }

        .btn-candy:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 25px rgba(255, 117, 140, 0.4);
        }

        .btn-cyan {
            background: var(--secondary-gradient);
            color: white;
            box-shadow: 0 10px 20px rgba(0, 242, 254, 0.2);
        }

        .btn-cyan:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 25px rgba(0, 242, 254, 0.3);
        }

        .btn-outline {
            background: white;
            color: var(--text-main);
            border: 2px solid #ff758c;
        }

        .btn-outline:hover {
            background: #ff758c;
            color: white;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        /* 首屏 Hero Section - 严禁图片 */
        .hero {
            position: relative;
            padding: 180px 0 120px;
            background: radial-gradient(circle at 80% 20%, rgba(255, 126, 179, 0.15) 0%, rgba(0, 242, 254, 0.15) 50%, rgba(255, 255, 255, 0) 100%);
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 50%;
            background: radial-gradient(circle, rgba(254, 205, 26, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 1;
            pointer-events: none;
        }

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

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #ff758c 0%, #7d3cf3 50%, #00f2fe 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 浮动卡片背景装饰 - 代替图片 */
        .hero-shapes {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin-top: 60px;
            flex-wrap: wrap;
        }

        .shape-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 20px;
            padding: 24px;
            width: 220px;
            box-shadow: var(--shadow-lg);
            transform: translateY(0);
            transition: all 0.3s;
        }

        .shape-card:hover {
            transform: translateY(-10px);
        }

        .shape-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: white;
            font-weight: bold;
        }

        /* 通用区块样式 */
        section {
            padding: 100px 0;
            position: relative;
        }

        .section-title-wrapper {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 6px;
            border-radius: 3px;
            background: var(--primary-gradient);
        }

        .section-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* 2. 关于我们与数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: white;
            border-radius: 24px;
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border-bottom: 4px solid #ff758c;
            transition: transform 0.3s;
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: #ff758c;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 1rem;
            color: var(--text-muted);
        }

        /* 3. 服务与模型聚合 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: white;
            border-radius: 24px;
            padding: 40px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--secondary-gradient);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            margin-bottom: 24px;
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 40px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag-item {
            background: white;
            border: 1px solid rgba(0,0,0,0.05);
            padding: 8px 18px;
            border-radius: 99px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            box-shadow: var(--shadow-sm);
            transition: all 0.2s;
        }

        .tag-item:hover {
            background: var(--primary-gradient);
            color: white;
            transform: scale(1.05);
        }

        /* 4. 标准化流程 */
        .process-flow {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 50px;
            flex-wrap: wrap;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--accent-gradient);
            color: white;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 8px 15px rgba(254, 205, 26, 0.3);
        }

        .process-step h4 {
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

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

        /* 5. 技术标准与对比评测 */
        .table-wrapper {
            overflow-x: auto;
            background: white;
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
            margin-top: 45px;
        }

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

        th, td {
            padding: 20px 24px;
            border-bottom: 1px solid #f1f5f9;
        }

        th {
            background: #fafafa;
            font-weight: 700;
        }

        .highlight-col {
            background: rgba(255, 117, 140, 0.05);
            font-weight: 600;
        }

        .rating-star {
            color: #fecd1a;
            font-size: 18px;
        }

        /* 6. 人工智能培训 & 职业教育 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .training-card {
            background: white;
            border-radius: 24px;
            padding: 32px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: #7d3cf3;
        }

        .training-badge {
            display: inline-block;
            padding: 6px 12px;
            background: rgba(125, 60, 243, 0.1);
            color: #7d3cf3;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* 7. Token 比价参考 */
        .price-card-wrapper {
            background: white;
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--shadow-lg);
            margin-top: 40px;
        }

        .price-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 24px;
        }

        .price-item {
            border: 1px solid #f1f5f9;
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            transition: background-color 0.3s;
        }

        .price-item:hover {
            background-color: rgba(67, 233, 123, 0.05);
        }

        .price-val {
            font-size: 1.8rem;
            font-weight: 800;
            color: #43e97b;
            margin: 10px 0;
        }

        /* 8. 常见用户问题 FAQ */
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
        }

        .faq-item {
            background: white;
            border-radius: 16px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            user-select: none;
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            border-top: 0 solid #f1f5f9;
        }

        .faq-item.active .faq-answer {
            padding: 20px 24px;
            max-height: 200px;
            border-top-width: 1px;
        }

        .faq-icon {
            transition: transform 0.3s;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* 9. 客户案例中心 & 真实媒体展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .case-card {
            background: white;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #f1f5f9;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

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

        /* 10. 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .review-card {
            background: white;
            border-radius: 24px;
            padding: 32px;
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .review-quote {
            font-size: 15px;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .user-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .user-meta h5 {
            font-size: 15px;
            font-weight: 600;
        }

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

        /* 11. 行业资讯 / 知识库 */
        .blog-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .blog-card {
            background: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

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

        .blog-card h4 {
            font-size: 1.1rem;
            margin-bottom: 12px;
        }

        .blog-card h4 a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.2s;
        }

        .blog-card h4 a:hover {
            color: #ff758c;
        }

        /* 12. 联系我们 & 表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: start;
            margin-top: 40px;
        }

        .contact-info-panel {
            background: white;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--shadow-md);
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 24px;
        }

        .contact-qr-box {
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid #f1f5f9;
            text-align: center;
        }

        .contact-qr-box img {
            width: 140px;
            height: 140px;
            margin: 15px auto 0;
            display: block;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
        }

        .form-panel {
            background: white;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            font-size: 15px;
            outline: none;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: #ff758c;
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        /* 浮动客服 */
        .float-service {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: white;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        .float-btn-main {
            background: var(--primary-gradient);
            color: white;
        }

        .float-tooltip {
            position: absolute;
            right: 70px;
            background: white;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 12px;
            white-space: nowrap;
            box-shadow: var(--shadow-md);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
        }

        .float-btn:hover .float-tooltip {
            opacity: 1;
        }

        /* 友情链接与页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            border-bottom: 1px solid #1e293b;
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-brand h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: white;
            margin-bottom: 15px;
        }

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

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

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links ul li a:hover {
            color: white;
        }

        .friend-links {
            margin-top: 30px;
            border-top: 1px solid #1e293b;
            padding-top: 20px;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            margin-right: 15px;
            font-size: 13px;
            display: inline-block;
            transition: color 0.3s;
        }

        .friend-links a:hover {
            color: white;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .contact-layout {
                grid-template-columns: 1fr;
            }
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid #f1f5f9;
            }
            nav.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 2rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-btns .btn {
                width: 100%;
            }
            .process-flow {
                flex-direction: column;
            }
            .process-step {
                margin-bottom: 30px;
            }
        }