/* CSS Reset & Variables */
        :root {
            --primary: #6366f1; /* 极光紫 */
            --secondary: #ec4899; /* 潮流粉 */
            --accent: #3b82f6; /* 科技蓝 */
            --bg-base: #f8fafc; /* 浅底色 */
            --bg-card: #ffffff;
            --text-main: #0f172a; /* 深灰正文 */
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --gradient-trend: linear-gradient(135deg, var(--primary), var(--secondary));
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 10px 30px rgba(99, 102, 241, 0.08);
            --shadow-lg: 0 20px 40px rgba(0,0,0,0.06);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        /* 统一页面容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        /* 艳色潮流风 - 潮流渐变点缀 */
        .badge {
            display: inline-block;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 600;
            color: #ffffff;
            background: var(--gradient-trend);
            border-radius: 99px;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(236, 72, 153, 0.2);
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 16px;
            background: linear-gradient(to right, #0f172a, #334155);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 50px auto;
        }

        /* 按钮设计 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 32px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-gradient {
            background: var(--gradient-trend);
            color: #ffffff !important;
            box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25);
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(99, 102, 241, 0.4);
        }

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

        .btn-outline:hover {
            background: rgba(99, 102, 241, 0.05);
            transform: translateY(-2px);
        }

        /* 1. 顶部导航 */
        header {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-box {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            max-height: 40px;
            object-fit: contain;
        }

        .nav-menu {
            display: flex;
            gap: 24px;
            list-style: none;
        }

        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .hamburger span {
            width: 24px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 2. Hero 首屏 (无图) */
        .hero {
            background: radial-gradient(circle at 90% 10%, rgba(236, 72, 153, 0.08) 0%, transparent 60%),
                        radial-gradient(circle at 10% 90%, rgba(99, 102, 241, 0.08) 0%, transparent 60%),
                        #ffffff;
            padding: 120px 0 100px 0;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-title-h1 {
            font-size: 48px;
            font-weight: 850;
            line-height: 1.25;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4f46e5 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 780px;
            margin: 0 auto 40px auto;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 60px;
        }

        /* 3. 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1-tier);
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            padding: 30px 20px;
            border-radius: 16px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .stat-card .num {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
            background: var(--gradient-trend);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-card .label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 4. 关于我们 */
        .about-section {
            background: #ffffff;
        }

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

        .about-text p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .tag-cloud span {
            background: rgba(99, 102, 241, 0.06);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
        }

        /* 5. 全平台AIGC服务体系 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            padding: 40px 30px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--gradient-trend);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background: rgba(236, 72, 153, 0.1);
            color: var(--secondary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* AI 平台流派标签 */
        .platform-list {
            margin-top: 40px;
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .platform-list h4 {
            font-size: 18px;
            margin-bottom: 20px;
            color: var(--text-main);
        }

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

        .platform-tags span {
            background: #f1f5f9;
            color: #334155;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 13px;
            border: 1px solid #e2e8f0;
        }

        /* 6. 全自动AIGC制作流程 & 标准化服务流程 (TimeLine) */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 2px;
            height: 100%;
            background: var(--border-color);
        }

        .timeline-item {
            margin-bottom: 40px;
            position: relative;
            width: 50%;
            padding: 0 30px;
        }

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

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

        .timeline-badge {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--gradient-trend);
            position: absolute;
            top: 5px;
            z-index: 10;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -10px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -10px;
        }

        .timeline-panel {
            background: #ffffff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .timeline-panel h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--primary);
        }

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

        /* 7. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .solution-card {
            background: #ffffff;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .solution-info {
            padding: 30px;
        }

        .solution-info h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .solution-info p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .solution-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .solution-features li {
            font-size: 13px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-features li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: bold;
        }

        /* 8. 案例展示区 */
        .case-section {
            background: #ffffff;
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--bg-base);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-img-box {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #e2e8f0;
        }

        .case-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-details {
            padding: 20px;
        }

        .case-details h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .case-details p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 9. 对比评测 (表格) */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            background: #ffffff;
            box-shadow: var(--shadow-sm);
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .compare-table th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--text-main);
        }

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

        .highlight-cell {
            background: rgba(99, 102, 241, 0.03);
            font-weight: 600;
            color: var(--primary);
        }

        .badge-star {
            color: #fbbf24;
            font-size: 16px;
        }

        /* 10. 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: #ffffff;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .training-card h3 {
            font-size: 16px;
            margin-bottom: 10px;
            color: var(--text-main);
        }

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

        /* 11. FAQ 折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #ffffff;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-item summary::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            content: '-';
            transform: rotate(90deg);
        }

        .faq-answer {
            padding: 0 20px 20px 20px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        /* 12. 客户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-trend);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .author-info h5 {
            font-size: 14px;
            font-weight: 700;
        }

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

        /* 13. 智能需求匹配与联系表单 */
        .form-contact-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: start;
        }

        .form-box {
            background: #ffffff;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

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

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 12px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: var(--bg-base);
            font-size: 14px;
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

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

        .contact-card-simple {
            background: #ffffff;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .contact-card-simple img {
            max-width: 140px;
            margin: 0 auto 16px auto;
            display: block;
            border-radius: 8px;
        }

        /* 14. 术语百科 & 文章 */
        .encyclopedia-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .ency-card {
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .ency-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .ency-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .articles-list {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .articles-list h3 {
            font-size: 20px;
            margin-bottom: 20px;
        }

        .articles-ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .articles-ul li {
            border-bottom: 1px dashed var(--border-color);
            padding-bottom: 12px;
        }

        .articles-ul li:last-child {
            border-bottom: none;
        }

        .articles-ul a {
            font-size: 14px;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
        }

        .articles-ul a:hover {
            color: var(--primary);
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            max-height: 40px;
            margin-bottom: 16px;
        }

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

        .footer-links a {
            color: #94a3b8;
            font-size: 14px;
        }

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

        .footer-friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-friend-links a {
            background: #1e293b;
            color: #cbd5e1;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 13px;
        }

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

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

        /* 浮动客服务及返回顶部 */
        .floating-action {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .float-btn:hover {
            transform: scale(1.1);
            background: var(--primary);
            color: #ffffff;
        }

        .float-kefu-pop {
            display: none;
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #ffffff;
            padding: 16px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            width: 160px;
            text-align: center;
        }

        .float-kefu-pop img {
            width: 100%;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .float-btn:hover .float-kefu-pop {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .case-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-contact-wrapper {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: var(--shadow-md);
            }

            .nav-menu.active {
                display: flex;
            }

            .hamburger {
                display: flex;
            }

            .hero-title-h1 {
                font-size: 32px;
            }

            .about-content {
                grid-template-columns: 1fr;
            }

            .case-grid, .comments-grid {
                grid-template-columns: 1fr;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .timeline-badge {
                left: 10px !important;
                right: auto !important;
            }

            .form-grid {
                grid-template-columns: 1fr;
            }

            .form-group.full-width {
                grid-column: span 1;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }