:root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --secondary: #10b981;
            --accent: #f59e0b;
            --dark: #0f172a;
            --light: #f8fafc;
            --border: #e2e8f0;
            --text-main: #334155;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

        .logo-wrap .ai-page-logo {
            max-height: 45px;
            width: auto;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }

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

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

        .nav-btn {
            background-color: var(--primary);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 6px;
            font-weight: 600 !important;
        }

        .nav-btn:hover {
            background-color: var(--primary-light);
            transform: translateY(-1px);
        }

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

        /* Hero 首屏 - 高亮度鲜活风, 无图片 */
        .hero {
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #f0fdf4 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            border-bottom: 1px solid var(--border);
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 20px;
            border: 1px solid rgba(37, 99, 235, 0.2);
        }

        .hero h1 {
            font-size: 2.5rem;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero p {
            font-size: 1.15rem;
            color: var(--text-main);
            max-width: 800px;
            margin: 0 auto 30px auto;
        }

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

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

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

        .btn-secondary {
            background-color: #fff;
            color: var(--dark);
            border: 1px solid var(--border);
        }

        .btn-secondary:hover {
            background-color: var(--light);
            border-color: #cbd5e1;
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-section {
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background-color: #fff;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .stat-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--dark);
        }

        /* 通用区块样式 */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

        .section-bg {
            background-color: #fff;
        }

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

        .section-title {
            font-size: 2rem;
            color: var(--dark);
            font-weight: 800;
            margin-bottom: 15px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-main);
        }

        /* 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            margin-bottom: 15px;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 25px;
        }

        .about-feature-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }

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

        .about-image-wrapper {
            position: relative;
        }

        .about-image-wrapper img {
            border-radius: 12px;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }

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

        .service-card {
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.05);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(37, 99, 235, 0.08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-main);
        }

        /* 标签云 - 支持的模型 */
        .tag-cloud-wrapper {
            margin-top: 40px;
            background-color: var(--light);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
        }

        .tag-cloud-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 20px;
            text-align: center;
        }

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

        .tag-item {
            background-color: #fff;
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--dark);
            transition: var(--transition);
        }

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

        /* 一站式AIGC制作 & 全行业解决方案 */
        .production-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .production-img-wrap img {
            border-radius: 12px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .features-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .feature-list-item {
            display: flex;
            gap: 15px;
        }

        .feature-list-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--secondary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }

        .feature-list-text h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .feature-list-text p {
            font-size: 0.9rem;
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: #fff;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.95rem;
        }

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
        }

        th {
            background-color: var(--light);
            color: var(--dark);
            font-weight: 700;
        }

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

        .highlight-col {
            background-color: rgba(37, 99, 235, 0.02);
            font-weight: 600;
        }

        .rating-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background-color: #fffbeb;
            color: #d97706;
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            border: 1px solid #fde68a;
        }

        /* 流程步骤 */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .step-card {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: #fff;
            font-size: 1.25rem;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            border: 4px solid rgba(37, 99, 235, 0.1);
        }

        .step-card h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 0.85rem;
        }

        /* Token 比价 */
        .token-card {
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }

        .token-card:hover {
            border-color: var(--secondary);
            box-shadow: 0 10px 15px rgba(16, 185, 129, 0.05);
        }

        .token-price {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--secondary);
            margin: 15px 0;
        }

        .token-price span {
            font-size: 0.9rem;
            color: var(--text-main);
            font-weight: normal;
        }

        /* 人工智能培训时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 30px;
            border-left: 2px solid var(--border);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -37px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 4px solid #fff;
        }

        .timeline-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        /* 客户案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--light);
            color: var(--text-main);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 20px;
            position: relative;
        }

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

        .author-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .author-info h5 {
            font-size: 0.9rem;
            color: var(--dark);
            font-weight: 700;
        }

        .author-info p {
            font-size: 0.75rem;
        }

        /* FAQ折叠面板 & AI术语 */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

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

        .faq-header h4 {
            font-size: 1rem;
            color: var(--dark);
            font-weight: 700;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
            background-color: var(--light);
        }

        .faq-item.active .faq-body {
            max-height: 200px;
            padding: 20px;
            border-top: 1px solid var(--border);
        }

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

        /* 最新文章 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .news-date {
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .news-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-card a {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 需求匹配表单与加盟 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-wrap {
            background-color: #fff;
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 10px 30px -10px rgba(0,0,0,0.05);
        }

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

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background-color: var(--light);
            font-size: 0.95rem;
            color: var(--dark);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .contact-info-wrap {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-card {
            background-color: #fff;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .info-icon {
            width: 40px;
            height: 40px;
            background-color: rgba(37, 99, 235, 0.08);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .info-detail h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .info-detail p {
            font-size: 0.9rem;
        }

        .info-detail img {
            max-width: 120px;
            border: 1px solid var(--border);
            border-radius: 6px;
            margin-top: 10px;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 40px;
            border-bottom: 1px solid #1e293b;
            padding-bottom: 40px;
        }

        .footer-brand h3 {
            color: #fff;
            margin-bottom: 15px;
        }

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

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
        }

        .friend-links-wrap {
            margin-bottom: 30px;
        }

        .friend-links-wrap h4 {
            color: #fff;
            margin-bottom: 15px;
        }

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

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.8rem;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: #3b82f6;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            flex-wrap: wrap;
            gap: 15px;
        }

        .ai-page-home-link {
            color: #fff;
            text-decoration: none;
            font-weight: 700;
        }

        /* 浮动客服 */
        .sticky-kf {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            background-color: var(--primary);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
        }

        .sticky-kf:hover {
            transform: scale(1.1);
        }

        .kf-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: #fff;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            width: 150px;
        }

        .kf-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .kf-popover p {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: 600;
        }

        .sticky-kf:hover .kf-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .services-grid, .cases-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .about-grid, .production-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 480px) {
            .services-grid, .cases-grid, .reviews-grid, .news-grid, .step-grid, .stats-grid {
                grid-template-columns: 1fr;
            }
        }