/* 基础变量 */
        :root {
            --primary: #E60012; /* 艳红主色 */
            --primary-light: #FFF5F5;
            --primary-gradient: linear-gradient(135deg, #FF3B30 0%, #E60012 100%);
            --secondary: #FF9500; /* 金橙辅助 */
            --dark: #1A1A1A;
            --text: #333333;
            --gray-light: #F8F9FA;
            --gray-border: #EBEBEB;
            --container-width: 1200px;
            --transition: all 0.3s ease;
        }

        /* 重置与通用 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background-color: #FFFFFF;
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        li {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* 标题组件 */
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }

        .section-title p {
            color: #666;
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 30px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #FFFFFF;
            box-shadow: 0 4px 15px rgba(230, 0, 18, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 0, 18, 0.4);
            color: #FFF;
        }

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

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

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

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

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

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark);
            padding: 8px 12px;
            border-radius: 4px;
        }

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

        .nav-btn {
            margin-left: 15px;
        }

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

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

        /* 1. Hero首屏 (纯CSS，无图片) */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(255, 149, 0, 0.1) 0%, rgba(230, 0, 18, 0.05) 50%, rgba(255, 255, 255, 1) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(230, 0, 18, 0.15) 0%, transparent 70%);
            filter: blur(50px);
            z-index: 1;
        }

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

        .hero-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 25px;
            border: 1px solid rgba(230, 0, 18, 0.2);
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 25px;
            font-weight: 800;
        }

        .hero h1 span {
            color: var(--primary);
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.2rem;
            color: #555;
            margin-bottom: 40px;
            line-height: 1.8;
        }

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

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

        .stat-card {
            background: #FFFFFF;
            padding: 25px 20px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border: 1px solid var(--gray-border);
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: rgba(230,0,18,0.3);
        }

        .stat-card .num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .stat-card .label {
            font-size: 0.95rem;
            color: #666;
            font-weight: 500;
        }

        /* 2. 关于我们 + 21. 加盟代理 */
        .about-section {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-info p {
            color: #666;
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .agent-box {
            background: #FFFFFF;
            border-left: 4px solid var(--primary);
            padding: 20px;
            border-radius: 0 8px 8px 0;
            margin-top: 30px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .agent-box h4 {
            color: var(--primary);
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        /* 3. 全平台AIGC服务 */
        .service-section {
            padding: 80px 0;
        }

        .models-marquee-container {
            overflow: hidden;
            background: var(--primary-light);
            padding: 20px 0;
            border-radius: 8px;
            margin-bottom: 40px;
            position: relative;
        }

        .models-marquee {
            display: flex;
            gap: 30px;
            animation: marquee 30s linear infinite;
            white-space: nowrap;
            width: max-content;
        }

        .model-tag {
            background: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--border-color);
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* 4. 一站式AIGC制作 */
        .production-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .prod-card {
            background: #FFFFFF;
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 30px 25px;
            transition: var(--transition);
        }

        .prod-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(230,0,18,0.08);
        }

        .prod-card .icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

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

        .prod-card p {
            color: #666;
            font-size: 0.95rem;
        }

        /* 5. 全行业解决方案 + 6. 全国服务网络 */
        .solution-section {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .sol-card {
            background: #FFFFFF;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .sol-card h3 {
            color: var(--primary);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .sol-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            color: #555;
        }

        .sol-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: bold;
        }

        /* 7. 标准化AIGC流程 + 8. 技术标准 */
        .process-section {
            padding: 80px 0;
        }

        .timeline {
            position: relative;
            max-width: 900px;
            margin: 40px auto 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            width: 2px;
            height: 100%;
            background: var(--gray-border);
            transform: translateX(-50%);
        }

        .timeline-item {
            padding: 20px 30px;
            position: relative;
            width: 50%;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            top: 30px;
            z-index: 1;
        }

        .timeline-item:nth-child(odd)::after {
            right: -8px;
        }

        .timeline-item:nth-child(even)::after {
            left: -8px;
        }

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

        .timeline-content h4 {
            color: var(--dark);
            margin-bottom: 8px;
            font-size: 1.1rem;
        }

        /* 9. 客户案例中心 (内含指定图片) */
        .cases-section {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

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

        .case-img-wrap {
            height: 200px;
            overflow: hidden;
            background: #EEE;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-info p {
            color: #666;
            font-size: 0.9rem;
        }

        /* 10. 对比评测 */
        .comparison-section {
            padding: 80px 0;
        }

        .comp-table-wrap {
            overflow-x: auto;
            margin-top: 30px;
        }

        .comp-table {
            width: 100%;
            border-collapse: collapse;
            text-align: center;
        }

        .comp-table th, .comp-table td {
            padding: 15px;
            border: 1px solid var(--gray-border);
        }

        .comp-table th {
            background-color: var(--gray-light);
            color: var(--dark);
            font-weight: 600;
        }

        .comp-table tr.highlight {
            background-color: var(--primary-light);
        }

        .comp-table tr.highlight td {
            border-color: var(--border-color);
        }

        .score-badge {
            background: var(--primary);
            color: #FFFFFF;
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.85rem;
        }

        /* 12. Token比价参考 */
        .token-section {
            padding: 80px 0;
            background: var(--gray-light);
        }

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

        .token-card {
            background: #FFFFFF;
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
        }

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

        .token-price {
            font-size: 1.8rem;
            color: var(--primary);
            font-weight: 700;
            margin: 15px 0;
        }

        .token-unit {
            font-size: 0.85rem;
            color: #888;
        }

        /* 13. 职业技术培训 + 14. 人工智能培训 */
        .training-section {
            padding: 80px 0;
        }

        .train-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .train-card {
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 30px 25px;
            background-color: #FFFFFF;
            transition: var(--transition);
        }

        .train-card:hover {
            border-color: var(--secondary);
            transform: scale(1.02);
        }

        .train-card h4 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .train-card h4::before {
            content: '🎓';
        }

        /* 用户评论 */
        .reviews-section {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            border: 1px solid var(--gray-border);
        }

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

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

        .user-info h5 {
            font-size: 0.95rem;
            color: var(--dark);
        }

        .user-info span {
            font-size: 0.8rem;
            color: #888;
        }

        .review-card p {
            font-size: 0.9rem;
            color: #555;
            line-height: 1.6;
        }

        /* 19. 行业资讯 / 知识库 */
        .articles-section {
            padding: 80px 0;
        }

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

        .article-item {
            background: var(--gray-light);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .article-item a {
            color: var(--primary);
            font-weight: 600;
            align-self: flex-start;
            font-size: 0.9rem;
        }

        .article-item a:hover {
            text-decoration: underline;
        }

        /* 15. 帮助中心 + 16. FAQ + 17. 自助排查 + 18. AI术语 */
        .faq-section {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--gray-border);
        }

        .faq-question {
            padding: 20px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(90deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
            color: #666;
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        /* 11. 智能需求匹配 + 20. 联系我们 */
        .contact-section {
            padding: 80px 0;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info-panel {
            background: var(--primary-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .contact-info-panel h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .contact-detail-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .qr-wrap {
            margin-top: 30px;
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .qr-card {
            text-align: center;
        }

        .qr-card img {
            width: 110px;
            height: 110px;
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            margin-bottom: 8px;
        }

        .qr-card span {
            font-size: 0.8rem;
            color: #555;
            display: block;
        }

        .form-wrap {
            background: #FFFFFF;
            border: 1px solid var(--gray-border);
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            outline: none;
            transition: var(--transition);
        }

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

        /* 友情链接 */
        .friend-links {
            padding: 30px 0;
            background: #FFFFFF;
            border-top: 1px solid var(--gray-border);
            text-align: center;
        }

        .friend-links h5 {
            color: #888;
            margin-bottom: 15px;
            font-size: 0.9rem;
        }

        .friend-links a {
            display: inline-block;
            margin: 0 12px;
            font-size: 0.85rem;
            color: #666;
        }

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

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #CCCCCC;
            padding: 50px 0 20px 0;
            font-size: 0.9rem;
        }

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

        .footer-logo {
            margin-bottom: 20px;
        }

        .footer-logo img {
            max-height: 40px;
            
        }

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

        .footer-col h5::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
        }

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

        .footer-col ul a {
            color: #AAA;
        }

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

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            color: #888;
            font-size: 0.8rem;
        }

        .footer-bottom p {
            margin-bottom: 10px;
        }

        /* 浮动工具栏 */
        .float-tools {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.2rem;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.05);
        }

        .float-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #FFFFFF;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            border: 1px solid var(--gray-border);
        }

        .float-qr img {
            width: 100px;
            height: 100px;
        }

        .float-qr span {
            display: block;
            font-size: 0.75rem;
            color: var(--dark);
            margin-top: 5px;
            white-space: nowrap;
        }

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

        /* 响应式适配 */
        @media (max-width: 992px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .about-grid { grid-template-columns: 1fr; }
            .production-grid { grid-template-columns: repeat(2, 1fr); }
            .solution-grid { grid-template-columns: 1fr; }
            .cases-grid { grid-template-columns: repeat(2, 1fr); }
            .train-grid { grid-template-columns: 1fr; }
            .reviews-grid { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #FFFFFF;
                flex-direction: column;
                padding: 20px;
                border-top: 1px solid var(--gray-border);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle { display: flex; }
            .timeline::before { left: 20px; }
            .timeline-item { width: 100%; text-align: left !important; padding-left: 45px; }
            .timeline-item::after { left: 12px !important; }
            .timeline-item:nth-child(even) { left: 0; }
            .stats-grid { grid-template-columns: 1fr; }
            .production-grid { grid-template-columns: 1fr; }
            .cases-grid { grid-template-columns: 1fr; }
            .token-grid { grid-template-columns: repeat(2, 1fr); }
            .articles-list { grid-template-columns: 1fr; }
        }