:root {
            --primary-grad: linear-gradient(135deg, #ff007f 0%, #7928ca 50%, #00dfd8 100%);
            --rainbow-1: #ff5e62;
            --rainbow-2: #ff9966;
            --rainbow-3: #ffd97d;
            --rainbow-4: #6ee7b7;
            --rainbow-5: #3b82f6;
            --rainbow-6: #8b5cf6;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --container-width: 1200px;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        /* 头部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

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

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

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

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            padding: 5px 10px;
            border-radius: 6px;
        }

        .nav-menu a:hover {
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-btn {
            background: var(--primary-grad);
            color: #fff;
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(121, 40, 202, 0.2);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(121, 40, 202, 0.3);
        }

        /* 移动端菜单按钮 */
        .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(--text-main);
            border-radius: 3px;
            transition: 0.3s;
        }

        /* 首屏 Hero (无图，彩虹科技感) */
        .hero-section {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 10% 20%, rgba(255, 94, 98, 0.05) 0%, rgba(139, 92, 246, 0.05) 90%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 223, 216, 0.08) 0%, transparent 60%);
            animation: rotateBg 20s linear infinite;
            z-index: 1;
        }

        @keyframes rotateBg {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: linear-gradient(90deg, rgba(255,94,98,0.1), rgba(139,92,246,0.1));
            border: 1px solid rgba(139,92,246,0.2);
            color: #8b5cf6;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 24px;
        }

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

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-rainbow {
            background: linear-gradient(90deg, var(--rainbow-1), var(--rainbow-2), var(--rainbow-6));
            background-size: 200% auto;
            color: #fff;
            padding: 15px 35px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 16px;
            box-shadow: 0 5px 20px rgba(255, 94, 98, 0.3);
            transition: all 0.4s ease;
        }

        .btn-rainbow:hover {
            background-position: right center;
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 94, 98, 0.4);
        }

        .btn-outline {
            border: 2px solid var(--border-color);
            padding: 13px 35px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 16px;
            background: transparent;
            transition: all 0.3s;
        }

        .btn-outline:hover {
            border-color: var(--text-main);
            background: rgba(0,0,0,0.02);
            transform: translateY(-3px);
        }

        /* 通用卡片与网格 */
        .section-padding {
            padding: 90px 0;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px auto;
        }

        .section-tag {
            color: #8b5cf6;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 14px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-main);
        }

        /* 平台介绍 & 数据指标 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

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

        .about-text p {
            margin-bottom: 20px;
        }

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

        .stat-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            text-align: center;
            border-top: 4px solid var(--rainbow-5);
            transition: transform 0.3s;
        }

        .stat-card:nth-child(2) { border-top-color: var(--rainbow-1); }
        .stat-card:nth-child(3) { border-top-color: var(--rainbow-6); }
        .stat-card:nth-child(4) { border-top-color: var(--rainbow-4); }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--text-main);
            margin-bottom: 5px;
        }

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

        /* 服务能力卡片 (彩虹多彩) */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #fff;
            border-radius: 20px;
            padding: 40px 30px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 6px;
            background: var(--primary-grad);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.06);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .service-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .service-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .model-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
        }

        .model-badge {
            font-size: 12px;
            padding: 4px 10px;
            background: var(--bg-light);
            border-radius: 12px;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

        /* 制作与解决方案 */
        .solution-section {
            background: #f1f5f9;
        }

        .solution-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.01);
            border: 1px solid var(--border-color);
        }

        .solution-card h3 {
            margin-bottom: 15px;
            color: var(--text-main);
        }

        /* 全国服务网络 - 时空地图质感 */
        .network-section {
            background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
        }
        
        .network-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .network-card {
            background: #fff;
            padding: 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all 0.3s;
        }

        .network-card:hover {
            border-color: var(--rainbow-5);
            box-shadow: 0 10px 25px rgba(59, 130, 246, 0.1);
        }

        .network-city {
            font-weight: bold;
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        /* 标准化流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 40px;
            bottom: -40px;
            width: 2px;
            background: var(--border-color);
        }

        .timeline-item:last-child::before {
            display: none;
        }

        .timeline-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary-grad);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            z-index: 2;
            flex-shrink: 0;
        }

        .timeline-content {
            padding-left: 25px;
            padding-top: 5px;
        }

        .timeline-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            margin-top: 30px;
        }

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

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .badge-star {
            background: #fef08a;
            color: #854d0e;
            padding: 4px 10px;
            border-radius: 12px;
            font-weight: bold;
            font-size: 12px;
        }

        /* 案例展示区 (含指定图片素材) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

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

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

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .case-info {
            padding: 25px;
        }

        .case-tag {
            font-size: 12px;
            color: #8b5cf6;
            font-weight: bold;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        /* 职业技术培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .training-card {
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            border-left: 5px solid var(--rainbow-5);
            transition: all 0.3s;
        }

        .training-card:nth-child(2n) { border-left-color: var(--rainbow-1); }
        .training-card:nth-child(3n) { border-left-color: var(--rainbow-6); }

        .training-card:hover {
            transform: translateX(5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.03);
        }

        /* Token 比价 */
        .token-price-wrapper {
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 40px rgba(0,0,0,0.02);
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .token-item {
            padding: 20px;
            background: var(--bg-light);
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .token-name {
            font-weight: bold;
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .token-cost {
            font-size: 1.3rem;
            color: #ef4444;
            font-weight: bold;
        }

        /* FAQ折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: 12px;
            margin-bottom: 15px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-trigger {
            width: 100%;
            padding: 20px;
            text-align: left;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-trigger::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--text-muted);
            transition: transform 0.3s;
        }

        .faq-item.active .faq-trigger::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #fafafb;
        }

        .faq-content-inner {
            padding: 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.01);
            position: relative;
        }

        .review-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

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

        .user-info h4 {
            font-size: 1rem;
            font-weight: bold;
        }

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

        /* 行业资讯 / 知识库 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .news-card {
            background: #fff;
            padding: 25px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title-link {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 15px;
            display: block;
        }

        .news-title-link:hover {
            color: var(--rainbow-5);
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* 智能需求匹配与表单 */
        .form-section {
            background: linear-gradient(135deg, rgba(255, 94, 98, 0.02) 0%, rgba(139, 92, 246, 0.02) 100%);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .contact-info-panel h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

        .info-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .info-icon {
            font-size: 1.5rem;
        }

        .form-wrapper {
            background: #fff;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 40px rgba(0,0,0,0.03);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            outline: none;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--rainbow-5);
        }

        .btn-submit {
            width: 100%;
            background: var(--primary-grad);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-weight: bold;
            font-size: 16px;
            cursor: pointer;
            transition: opacity 0.3s;
        }

        .btn-submit:hover {
            opacity: 0.9;
        }

        /* 友情链接与标签云 */
        .links-section {
            background: #fff;
            border-top: 1px solid var(--border-color);
            padding: 40px 0;
        }

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

        .links-flex a {
            font-size: 13px;
            color: var(--text-muted);
            padding: 6px 12px;
            background: var(--bg-light);
            border-radius: 6px;
        }

        .links-flex a:hover {
            background: var(--border-color);
            color: var(--text-main);
        }

        /* 悬浮客服面板 */
        .float-panel {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            cursor: pointer;
            position: relative;
            transition: all 0.3s;
        }

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

        .float-qrcode {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            width: 140px;
        }

        .float-item:hover .float-qrcode {
            display: block;
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-desc h4 {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
        }

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

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

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .form-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                display: none;
            }
            .nav-menu.active {
                display: flex;
            }
        }