:root {
            --primary: #7C3AED;
            --primary-light: #C084FC;
            --primary-dark: #5B21B6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --text-main: #0F172A;
            --text-muted: #475569;
            --bg-base: #F8FAFC;
            --bg-card: #FFFFFF;
            --border-color: #E2E8F0;
            --glow-color: rgba(124, 58, 237, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
        }

        body {
            overflow-x: hidden;
            line-height: 1.6;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

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

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

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

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #FFFFFF;
            box-shadow: 0 4px 12px var(--glow-color);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(124, 58, 237, 0.3);
        }

        .btn-secondary {
            background: rgba(124, 58, 237, 0.1);
            color: var(--primary);
            border: 1px solid rgba(124, 58, 237, 0.2);
        }

        .btn-secondary:hover {
            background: rgba(124, 58, 237, 0.15);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* Hero首屏 (无图片) */
        .hero {
            padding: 150px 0 80px;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
                        #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(124, 58, 237, 0.08);
            color: var(--primary);
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 24px;
            border: 1px solid rgba(124, 58, 237, 0.15);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        h1.hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--text-main);
        }

        h1.hero-title span {
            background: linear-gradient(135deg, var(--primary) 30%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
        }

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

        .btn-large {
            padding: 14px 32px;
            font-size: 1rem;
            border-radius: 10px;
        }

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

        .stat-card {
            background: var(--bg-card);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(124, 58, 237, 0.08);
            border-color: var(--primary-light);
        }

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

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用区块样式 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-tag {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

        /* 平台介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }

        .intro-text p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .intro-features {
            list-style: none;
            margin-top: 30px;
        }

        .intro-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 16px;
            font-weight: 600;
            color: var(--text-main);
        }

        .intro-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 2px;
            width: 18px;
            height: 18px;
            background: rgba(6, 182, 212, 0.15);
            color: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: bold;
        }

        .intro-card {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.05), rgba(6, 182, 212, 0.05));
            border: 2px solid rgba(124, 58, 237, 0.1);
            border-radius: 20px;
            padding: 40px;
            text-align: center;
        }

        .intro-card-icon {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        /* 2. 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(124, 58, 237, 0.1);
            border-color: var(--primary-light);
        }

        .service-icon {
            width: 56px;
            height: 56px;
            background: rgba(124, 58, 237, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .service-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

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

        /* 一站式创作场景 */
        .creation-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .creation-card:hover {
            border-color: var(--secondary);
            box-shadow: 0 8px 24px rgba(6, 182, 212, 0.08);
        }

        .creation-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(6, 182, 212, 0.1);
            color: var(--secondary);
            margin-bottom: 16px;
        }

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

        .solution-card {
            background: linear-gradient(to bottom, var(--bg-card), var(--bg-base));
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
        }

        /* 服务网络 */
        .network-map {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 30px;
        }

        .network-node {
            padding: 16px;
            background: var(--bg-base);
            border-radius: 8px;
            font-weight: 600;
        }

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

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            position: relative;
            z-index: 2;
        }

        .step-num {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(124, 58, 237, 0.1);
            position: absolute;
            top: 10px;
            right: 20px;
            line-height: 1;
        }

        /* 技术标准 */
        .tech-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tech-item {
            background: var(--bg-card);
            border-left: 4px solid var(--primary);
            padding: 20px;
            border-radius: 0 8px 8px 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
        }

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

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

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.08);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #E2E8F0;
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .case-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .review-wrapper {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .score-box {
            text-align: center;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 30px;
        }

        .score-num {
            font-size: 4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-stars {
            color: #F59E0B;
            font-size: 1.5rem;
            margin: 10px 0;
        }

        .compare-table-container {
            overflow-x: auto;
        }

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

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

        .compare-table th {
            font-weight: 700;
            background: var(--bg-base);
        }

        .compare-table tr:hover {
            background: rgba(124, 58, 237, 0.02);
        }

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

        /* Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
        }

        .price-model {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .price-val {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
        }

        /* 培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .training-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 20px rgba(124, 58, 237, 0.05);
        }

        /* 常见问题 FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: #FFFFFF;
            color: var(--text-main);
        }

        .faq-question::after {
            content: "+";
            font-size: 1.5rem;
            transition: transform 0.3s;
            color: var(--primary);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--bg-base);
        }

        .faq-answer-inner {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-color);
        }

        /* 自助排查 & 百科 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .troubleshoot-box, .encyclopedia-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
        }

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

        .tag-item {
            padding: 6px 12px;
            background: var(--bg-base);
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

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

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.01);
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 44px;
            height: 44px;
            background: rgba(124, 58, 237, 0.1);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .user-info h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .user-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

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

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

        .news-card:hover {
            border-color: var(--primary);
        }

        .news-link {
            text-decoration: none;
            color: var(--text-main);
        }

        .news-link h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

        /* 智能需求匹配 (表单) */
        .form-section {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.02) 0%, rgba(6, 182, 212, 0.02) 100%);
        }

        .form-wrapper {
            max-width: 650px;
            margin: 0 auto;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
        }

        /* 联系与加盟 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-details {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .contact-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
        }

        .contact-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .contact-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .qr-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
        }

        .qr-image {
            max-width: 160px;
            margin: 0 auto 20px;
            border: 1px solid var(--border-color);
            padding: 8px;
            border-radius: 8px;
            background: #FFFFFF;
        }

        .qr-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 友情链接与底部 */
        footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 60px 0 30px;
            border-top: 1px solid #1E293B;
        }

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

        .footer-brand h3 {
            color: #FFFFFF;
            margin-bottom: 16px;
            font-size: 1.25rem;
        }

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

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

        .footer-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links {
            border-top: 1px solid #1E293B;
            padding-top: 30px;
            margin-bottom: 30px;
        }

        .friend-links-title {
            font-size: 0.9rem;
            color: #64748B;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .friend-links-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friend-links-grid a {
            color: #64748B;
            text-decoration: none;
            font-size: 0.85rem;
            transition: var(--transition);
        }

        .friend-links-grid a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 30px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748B;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom a {
            color: #64748B;
            text-decoration: none;
        }

        /* 侧边浮动客服 */
        .float-contact {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            font-size: 1.2rem;
            border: none;
            position: relative;
        }

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

        .float-qr-hover {
            display: none;
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 8px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            width: 140px;
        }

        .float-qr-hover img {
            width: 100%;
            height: auto;
        }

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

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid, .services-grid, .creation-grid, .case-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-grid, .network-grid, .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            h1.hero-title {
                font-size: 2rem;
            }
            .stats-grid, .services-grid, .creation-grid, .case-grid, .reviews-grid, .news-grid, .solution-grid, .network-grid, .steps-grid, .price-grid, .training-grid, .troubleshoot-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 16px;
            }
        }