:root {
            --primary: #0062ff;
            --primary-light: #e6f0ff;
            --secondary: #00f2fe;
            --dark: #0f172a;
            --gray-light: #f8fafc;
            --gray-border: #e2e8f0;
            --text-main: #334155;
            --text-dark: #0f172a;
            --accent: #ff6b6b;
            --max-w: 1200px;
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: #004ecc;
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        .container {
            width: 100%;
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            color: var(--text-dark);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .section-subtitle {
            text-align: center;
            color: #64748b;
            margin-bottom: 50px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--gray-border);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00d2ff);
            color: #fff;
            box-shadow: 0 4px 15px rgba(0, 98, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 98, 255, 0.4);
            color: #fff;
        }

        .btn-outline {
            background-color: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

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

        /* 顶部导航 */
        .header {
            position: sticky;
            top: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-border);
            z-index: 1000;
            transition: all 0.3s ease;
        }

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

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

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

        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 4px;
        }

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

        .nav-btn {
            font-size: 0.9rem;
            padding: 8px 18px;
        }

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

        /* Hero 首屏 - 无任何图片 */
        .hero {
            background: radial-gradient(circle at 80% 20%, #e0f2fe 0%, #ffffff 60%);
            padding: 100px 0 120px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 98, 255, 0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: #475569;
            margin-bottom: 35px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            gap: 15px;
            margin-bottom: 40px;
        }

        /* 极速转化通道：首屏侧边卡片 */
        .hero-stats {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(20px);
            padding: 30px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.04);
        }

        .hero-stat-card {
            border-left: 4px solid var(--primary);
            padding-left: 15px;
            margin-bottom: 20px;
        }

        .hero-stat-card:last-child {
            margin-bottom: 0;
        }

        .hero-stat-val {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-stat-lbl {
            font-size: 0.9rem;
            color: #64748b;
            margin-top: 5px;
        }

        /* 数据指标卡片 */
        .stats-strip {
            background-color: var(--gray-light);
            padding: 40px 0;
            border-bottom: 1px solid var(--gray-border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-dark);
        }

        .stat-txt {
            font-size: 0.95rem;
            color: #64748b;
            margin-top: 5px;
        }

        /* 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-text p {
            margin-bottom: 15px;
            font-size: 1.05rem;
            color: #475569;
        }

        .feature-bullets {
            list-style: none;
            margin-top: 25px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .feature-bullets li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #10b981;
            font-weight: 900;
            font-size: 1.2rem;
        }

        .software-meta {
            background-color: var(--primary-light);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid rgba(0, 98, 255, 0.15);
        }

        .meta-title {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        /* 服务体系 & 模型支持 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #fff;
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 35px 30px;
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-icon {
            font-size: 2.2rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .service-card p {
            font-size: 0.95rem;
            color: #64748b;
        }

        /* 支持大模型标签云 */
        .tag-cloud-sec {
            background-color: #fff;
            padding: 60px 0;
        }

        .tag-cloud-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .model-tag {
            background: var(--gray-light);
            border: 1px solid var(--gray-border);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: all 0.2s;
        }

        .model-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 制作流程 & 服务全流程 (融合时间线样式) */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 40px auto 0;
            padding-left: 30px;
            border-left: 2px solid var(--primary-light);
        }

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

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-badge {
            position: absolute;
            left: -41px;
            top: 2px;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background-color: #fff;
            border: 4px solid var(--primary);
            z-index: 10;
        }

        .timeline-panel {
            background: var(--gray-light);
            padding: 20px 25px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
        }

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

        /* 解决方案 & 技术标准 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background: #fff;
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
        }

        .solution-card h4 {
            font-size: 1.1rem;
            margin: 10px 0;
            color: var(--text-dark);
        }

        /* 客户案例中心 - 含实际图库 */
        .case-grid {
            display: grid;
            grid-template-columns: 2fr 1.2fr;
            gap: 30px;
        }

        .case-main {
            background: var(--gray-light);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--gray-border);
        }

        .case-image-container {
            width: 100%;
            overflow: hidden;
        }

        .case-sub-grid {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .case-sub-item {
            background: var(--gray-light);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            overflow: hidden;
            display: flex;
            align-items: center;
        }

        .case-sub-img {
            width: 40%;
            height: 100%;
            object-fit: cover;
        }

        .case-sub-content {
            padding: 20px;
            width: 60%;
        }

        /* 职业技术培训板块 */
        .training-card-group {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background: var(--gray-light);
            border: 1px solid var(--gray-border);
            border-radius: 10px;
            padding: 20px 15px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            background: #fff;
            transform: translateY(-3px);
        }

        .training-cert {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 700;
            background: var(--primary-light);
            padding: 3px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }

        /* 对比评测板块 */
        .compare-sec {
            background: var(--gray-light);
        }

        .compare-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 900px;
            margin: 0 auto 30px;
            padding: 20px;
            background: #fff;
            border-radius: 10px;
            border: 1px solid var(--gray-border);
        }

        .compare-score {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .score-big {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
        }

        .stars {
            color: #fbbf24;
            font-size: 1.4rem;
        }

        .table-responsive {
            max-width: 900px;
            margin: 0 auto;
            overflow-x: auto;
            border-radius: 10px;
            border: 1px solid var(--gray-border);
            background: #fff;
        }

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

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

        .compare-table th {
            background-color: #f1f5f9;
            color: var(--text-dark);
            font-weight: 700;
        }

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

        .feature-highlight {
            font-weight: 700;
            color: var(--primary);
        }

        /* Token比价参考 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        .price-card {
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
            background: #fff;
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(0,98,255,0.08);
            position: relative;
        }

        .price-card.featured::after {
            content: '推荐';
            position: absolute;
            top: 10px;
            right: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
        }

        .price-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
            margin: 15px 0;
        }

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

        .faq-item {
            border-bottom: 1px solid var(--gray-border);
            padding: 18px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--primary);
            transition: transform 0.2s;
        }

        .faq-item.active .faq-question::after {
            content: '-';
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: #475569;
            font-size: 0.95rem;
            margin-top: 8px;
        }

        /* 自助排查与术语百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            max-width: 900px;
            margin: 0 auto;
        }

        .wiki-card {
            background: var(--gray-light);
            border: 1px solid var(--gray-border);
            padding: 25px;
            border-radius: 10px;
        }

        .wiki-card h4 {
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .wiki-list {
            list-style: none;
        }

        .wiki-list li {
            margin-bottom: 10px;
            font-size: 0.9rem;
        }

        .wiki-list strong {
            color: var(--primary);
        }

        /* 客户评论卡片 (6条) */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background: #fff;
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .review-user-info h4 {
            font-size: 0.95rem;
            color: var(--text-dark);
        }

        .review-user-info span {
            font-size: 0.8rem;
            color: #64748b;
        }

        .review-content {
            font-size: 0.9rem;
            color: #475569;
            line-height: 1.5;
        }

        /* 行业资讯 & 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            overflow: hidden;
            background: #fff;
        }

        .news-content {
            padding: 20px;
        }

        .news-date {
            font-size: 0.8rem;
            color: #94a3b8;
            margin-bottom: 10px;
        }

        .news-card h4 {
            font-size: 1.05rem;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .news-link {
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* 表单与联系我们 */
        .contact-section {
            background-color: var(--gray-light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-card {
            background: #fff;
            border: 1px solid var(--gray-border);
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

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

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

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

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            outline: none;
            font-size: 0.95rem;
            transition: border-color 0.2s;
        }

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

        .contact-info-card {
            background: #fff;
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 30px;
        }

        .info-item {
            margin-bottom: 25px;
        }

        .info-title {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 5px;
        }

        .kefu-qrcode {
            max-width: 150px;
            margin-top: 15px;
            border: 1px solid var(--gray-border);
            padding: 5px;
            background: #fff;
        }

        /* 友情链接与全国服务网络小挂件 */
        .footer-top {
            background: #fff;
            padding: 40px 0;
            border-bottom: 1px solid var(--gray-border);
        }

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

        .footer-widget-title {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

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

        .friend-links a {
            background-color: var(--gray-light);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            color: var(--text-main);
        }

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

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

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 15px;
        }

        .footer-links-col h5 {
            color: #fff;
            margin-bottom: 15px;
        }

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

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

        .footer-links-col ul li a {
            color: #94a3b8;
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 侧边悬浮窗 */
        .floating-action {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

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

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

        .float-btn .hover-card {
            display: none;
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            width: 180px;
            text-align: center;
        }

        .float-btn:hover .hover-card {
            display: block;
        }

        /* 移动端响应式 */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
            }
            .grid-3, .review-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-card-group {
                grid-template-columns: repeat(3, 1fr);
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-bottom: 1px solid var(--gray-border);
            }
            .nav.active {
                display: flex;
            }
            .nav-link {
                width: 100%;
                text-align: center;
            }
            .hero-btns {
                flex-direction: column;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .contact-grid, .wiki-grid, .footer-top-grid {
                grid-template-columns: 1fr;
            }
            .grid-3, .review-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .training-card-group {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }