/* 根变量及活力亮彩渐变风定义 */
        :root {
            --primary: #6366f1;
            --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f43f5e 100%);
            --bg-gradient: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
            --text-main: #0f172a;
            --text-muted: #475569;
            --white: #ffffff;
            --card-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.05);
            --card-hover-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1200px;
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

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

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

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

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

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

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

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

        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .nav-btn {
            background: var(--primary-gradient);
            color: var(--white) !important;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(236, 72, 153, 0.4);
        }

        /* 移动端菜单控制 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background: var(--text-main);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* 页面主体定位 */
        main {
            padding-top: 70px;
        }

        /* 通用区块设置 */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 32px;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-title p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* Hero 首屏 (无图) */
        .hero-section {
            padding: 120px 0 100px 0;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
            text-align: center;
            overflow: hidden;
        }

        .hero-badge {
            background: rgba(99, 102, 241, 0.1);
            color: #4f46e5;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 24px;
        }

        .hero-section h1 {
            font-size: 42px;
            line-height: 1.25;
            font-weight: 900;
            color: var(--text-main);
            max-width: 800px;
            margin: 0 auto 24px auto;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto 36px auto;
        }

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

        .btn-primary {
            background: var(--primary-gradient);
            color: var(--white);
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 10px 25px rgba(236, 72, 153, 0.3);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(236, 72, 153, 0.4);
        }

        .btn-secondary {
            background: var(--white);
            color: var(--text-main);
            border: 1px solid #e2e8f0;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: #f8fafc;
            border-color: #cbd5e1;
            transform: translateY(-3px);
        }

        /* 数据指标 */
        .stats-section {
            background: var(--white);
            padding: 50px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stats-item h3 {
            font-size: 36px;
            font-weight: 800;
            color: #4f46e5;
            margin-bottom: 8px;
        }

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

        /* 关于我们 & 平台介绍 */
        .about-section {
            background: #fff;
        }

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

        .about-content h3 {
            font-size: 26px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .about-features {
            list-style: none;
        }

        .about-features li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            color: #ec4899;
            font-weight: 900;
            font-size: 18px;
        }

        /* AIGC 服务与多模型聚合 */
        .services-section {
            background: #f8fafc;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag-card {
            background: var(--white);
            border: 1px solid #e2e8f0;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .tag-card:hover {
            border-color: #ec4899;
            color: #ec4899;
            transform: scale(1.05);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .service-card {
            background: var(--white);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.02);
        }

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

        .service-icon {
            font-size: 32px;
            margin-bottom: 20px;
            display: inline-block;
        }

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

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

        /* 一站式制作 */
        .creation-section {
            background: var(--white);
        }

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

        .creation-card {
            background: #fafafc;
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            border: 1px solid rgba(0, 0, 0, 0.03);
            transition: var(--transition);
        }

        .creation-card:hover {
            background: var(--white);
            box-shadow: var(--card-hover-shadow);
            transform: translateY(-3px);
        }

        /* 行业解决方案与全国服务网络 */
        .solutions-section {
            background: #f8fafc;
        }

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

        .solution-card {
            background: var(--white);
            padding: 35px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
        }

        .network-box {
            margin-top: 50px;
            background: var(--white);
            border-radius: 20px;
            padding: 40px;
            text-align: center;
            box-shadow: var(--card-shadow);
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .network-item {
            background: #fafafc;
            padding: 15px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid #f1f5f9;
        }

        /* 标准化流程 */
        .process-section {
            background: var(--white);
        }

        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
            background: #fafafc;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid #f1f5f9;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
            font-weight: 700;
        }

        /* 客户案例中心 */
        .case-section {
            background: #f8fafc;
        }

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

        .case-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #e2e8f0;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        /* 对比评测 */
        .compare-section {
            background: var(--white);
        }

        .compare-header {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
            border-radius: 16px;
            padding: 40px;
            text-align: center;
            margin-bottom: 40px;
            border: 1px solid rgba(79, 70, 229, 0.1);
        }

        .compare-score {
            font-size: 48px;
            font-weight: 900;
            color: #ec4899;
            margin-bottom: 10px;
        }

        .compare-stars {
            color: #f59e0b;
            font-size: 24px;
            margin-bottom: 10px;
        }

        .compare-table-wrapper {
            width: 100%;
            overflow-x: auto;
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid #e2e8f0;
        }

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

        .compare-table tr:hover {
            background-color: #fafafc;
        }

        .highlight-td {
            font-weight: 600;
            color: #4f46e5;
            background: rgba(79, 70, 229, 0.02);
        }

        /* Token 比价 */
        .token-section {
            background: #f8fafc;
        }

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

        .token-card {
            background: var(--white);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            border: 2px solid transparent;
            transition: var(--transition);
        }

        .token-card.best-value {
            border-color: #ec4899;
            position: relative;
        }

        .token-card.best-value::after {
            content: "超值推荐";
            position: absolute;
            top: 15px;
            right: 15px;
            background: #ec4899;
            color: var(--white);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 50px;
            font-weight: 700;
        }

        .token-price {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-main);
            margin: 20px 0;
        }

        .token-price span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 400;
        }

        /* 人工智能与技术培训 */
        .training-section {
            background: var(--white);
        }

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

        .training-card {
            background: #fafafc;
            border-radius: 16px;
            padding: 30px;
            border: 1px solid #f1f5f9;
            transition: var(--transition);
        }

        .training-card:hover {
            background: var(--white);
            box-shadow: var(--card-hover-shadow);
            border-color: #e2e8f0;
        }

        .training-cert {
            font-size: 12px;
            color: #4f46e5;
            font-weight: 700;
            margin-bottom: 10px;
            display: inline-block;
        }

        /* 需求匹配表单 */
        .form-section {
            background: #f8fafc;
        }

        .form-container {
            background: var(--white);
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            padding: 50px;
            max-width: 800px;
            margin: 0 auto;
        }

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

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

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

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 12px 16px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 14px;
            transition: var(--transition);
            outline: none;
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: #4f46e5;
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        .form-btn {
            background: var(--primary-gradient);
            color: var(--white);
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }

        .form-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(236, 72, 153, 0.3);
        }

        /* 帮助中心与 FAQ */
        .faq-section {
            background: var(--white);
        }

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

        .faq-item {
            border-bottom: 1px solid #e2e8f0;
            padding: 20px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            font-size: 16px;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 0;
        }

        .faq-answer.show {
            max-height: 500px;
            margin-top: 12px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

        .faq-icon::before {
            content: "+";
            font-size: 20px;
            color: var(--primary);
        }

        .faq-item.active .faq-icon::before {
            content: "−";
        }

        /* AI 术语百科 (标签云) */
        .glossary-section {
            background: #f8fafc;
        }

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

        .glossary-term {
            background: var(--white);
            border: 1px solid #e2e8f0;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .glossary-term:hover {
            background: var(--primary-gradient);
            color: var(--white);
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* 行业资讯 / 知识库 */
        .news-section {
            background: var(--white);
        }

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

        .news-card {
            background: #fafafc;
            border-radius: 16px;
            padding: 24px;
            border: 1px solid #f1f5f9;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h4 {
            font-size: 18px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .news-link {
            color: #4f46e5;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            color: #ec4899;
        }

        /* 用户评论 */
        .reviews-section {
            background: #f8fafc;
        }

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

        .review-card {
            background: var(--white);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--card-shadow);
        }

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

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

        .user-avatar {
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: 700;
            font-size: 14px;
        }

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

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

        /* 加盟代理 */
        .agent-section {
            background: linear-gradient(135deg, #4f46e5 0%, #312e81 100%);
            color: var(--white);
            text-align: center;
            padding: 80px 0;
        }

        .agent-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--white);
        }

        .agent-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 30px auto;
        }

        /* 联系我们 & 帮助通道 */
        .contact-section {
            background: var(--white);
        }

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

        .contact-details h3 {
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .contact-list {
            list-style: none;
            margin-bottom: 30px;
        }

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

        .qr-codes {
            display: flex;
            gap: 30px;
        }

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

        .qr-item img {
            width: 130px;
            height: 130px;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            padding: 5px;
            background: var(--white);
        }

        .qr-item p {
            font-size: 12px;
            font-weight: 700;
            margin-top: 8px;
            color: var(--text-muted);
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 14px;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .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: var(--white);
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 友情链接 */
        .friendship-links {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            font-size: 12px;
        }

        .friendship-links a {
            color: #64748b;
            text-decoration: none;
            margin-right: 15px;
            transition: var(--transition);
        }

        .friendship-links a:hover {
            color: var(--white);
        }

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-trigger {
            width: 50px;
            height: 50px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 20px;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(236, 72, 153, 0.4);
            transition: var(--transition);
            position: relative;
        }

        .service-trigger:hover {
            transform: scale(1.1);
        }

        .service-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--white);
            border-radius: 12px;
            box-shadow: var(--card-hover-shadow);
            padding: 20px;
            text-align: center;
            display: none;
            width: 200px;
            border: 1px solid #e2e8f0;
        }

        .service-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 10px;
        }

        .service-popover p {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 700;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .services-grid, .creation-grid, .case-grid, .token-grid, .training-grid, .news-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                gap: 15px;
                border-bottom: 1px solid rgba(0, 0, 0, 0.05);
                display: none;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .about-grid, .solution-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .creation-grid, .case-grid, .token-grid, .training-grid, .news-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .network-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-section h1 {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }