:root {
            --primary: #0d9488;
            --primary-dark: #0f766e;
            --primary-light: #ccfbf1;
            --secondary: #0284c7;
            --bg-main: #f8fafc;
            --bg-surface: #ffffff;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --border-color: #cbd5e1;
            --card-shadow: 0 10px 25px -5px rgba(13, 148, 136, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-lg: 16px;
            --radius-md: 10px;
            --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-main);
            color: var(--text-dark);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
            background-color: var(--bg-main);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(203, 213, 225, 0.6);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .brand-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            max-height: 44px;
            width: auto;
            display: block;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
        }

        .nav-links li a {
            display: inline-block;
            padding: 8px 12px;
            color: var(--text-dark);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border-radius: 6px;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
            color: #ffffff;
        }

        .btn-secondary {
            background-color: #ffffff;
            color: var(--text-dark);
            border-color: var(--border-color);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
        }

        /* 统一 Section 样式 */
        .section-block {
            padding: 70px 0;
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }

        .section-title-wrap {
            text-align: center;
            max-width: 750px;
            margin: 0 auto 45px auto;
        }

        .section-subtitle {
            display: inline-block;
            padding: 4px 14px;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* 1. HERO 首屏 (无图片) */
        .hero-section {
            background: radial-gradient(circle at 50% 10%, rgba(204, 251, 241, 0.6) 0%, rgba(248, 250, 252, 1) 70%);
            padding: 90px 0 70px 0;
            text-align: center;
            position: relative;
        }

        .hero-content {
            max-width: 850px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: #ffffff;
            border: 1px solid rgba(13, 148, 136, 0.3);
            border-radius: 30px;
            font-size: 14px;
            color: var(--primary-dark);
            font-weight: 600;
            margin-bottom: 24px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }

        .hero-h1 {
            font-size: 40px;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: var(--text-dark);
            margin-bottom: 20px;
            line-height: 1.25;
        }

        .hero-subtext {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 35px;
            line-height: 1.7;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .stat-card {
            background: #ffffff;
            padding: 24px 16px;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 4px;
        }

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

        /* 2. 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
        }

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

        .feature-check-list {
            list-style: none;
            margin-bottom: 24px;
        }

        .feature-check-list li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--text-dark);
            font-weight: 500;
        }

        .feature-check-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
            font-weight: 900;
        }

        .about-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        /* 3. AIGC服务 & 核心矩阵 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .service-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        .service-tag {
            font-size: 12px;
            color: var(--secondary);
            font-weight: 600;
            background: #f0f9ff;
            padding: 4px 10px;
            border-radius: 4px;
            align-self: flex-start;
        }

        /* 4. 一站式制作与平台支持 */
        .models-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 25px;
        }

        .model-badge {
            background: #ffffff;
            border: 1px solid #cbd5e1;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .model-badge:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
            color: var(--primary-dark);
        }

        /* 5. 行业方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .solution-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow);
            border-color: var(--primary);
        }

        .solution-body {
            padding: 24px;
        }

        .solution-body h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        /* 6. 服务网络 */
        .network-box {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .network-item h5 {
            font-size: 20px;
            color: #ccfbf1;
            margin-bottom: 8px;
        }

        .network-item p {
            font-size: 14px;
            color: #94a3b8;
        }

        /* 7. 标准流程 (Timeline) */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            position: relative;
        }

        .step-card {
            background: #ffffff;
            padding: 20px 16px;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin: 0 auto 12px auto;
        }

        .step-card h5 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }

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

        /* 8. 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .case-img-holder {
            border-radius: 8px;
            overflow: hidden;
        }

        .case-info h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* 9. 对比评测 (五星 9.9分) */
        .rating-banner {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 2px solid var(--primary);
            padding: 30px;
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--card-shadow);
        }

        .rating-score {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .score-val {
            font-size: 48px;
            font-weight: 900;
            color: var(--primary-dark);
            line-height: 1;
        }

        .score-meta {
            display: flex;
            flex-direction: column;
        }

        .stars {
            color: #f59e0b;
            font-size: 20px;
            letter-spacing: 2px;
        }

        .compare-table-wrapper {
            overflow-x: auto;
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

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

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

        .compare-table tr.highlight-row {
            background: rgba(204, 251, 241, 0.3);
            font-weight: 600;
        }

        .check-icon {
            color: var(--primary-dark);
            font-weight: 900;
        }

        .cross-icon {
            color: #94a3b8;
        }

        /* 10. 需求匹配 */
        .match-box {
            background: #ffffff;
            padding: 35px;
            border-radius: var(--radius-lg);
            border: 1px solid #cbd5e1;
            box-shadow: var(--card-shadow);
        }

        .match-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .match-item {
            padding: 10px 18px;
            background: #f1f5f9;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .match-item:hover, .match-item.active {
            background: var(--primary);
            color: #ffffff;
        }

        /* 11. Token比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1fr solid #e2e8f0;
            padding: 30px 24px;
            border: 1px solid #cbd5e1;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .price-card.featured {
            border: 2px solid var(--primary);
            box-shadow: var(--card-shadow);
        }

        .price-card.featured::before {
            content: "超值推荐";
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #ffffff;
            font-size: 12px;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 12px;
        }

        .price-card h4 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .price-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 16px;
        }

        .price-features {
            list-style: none;
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .price-features li {
            padding: 6px 0;
            border-bottom: 1px dashed #f1f5f9;
        }

        /* 12 & 13. 常见问题 (FAQ 12条) */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background: #f8fafc;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            padding: 16px 24px 20px 24px;
            max-height: 200px;
            border-top: 1px solid #f1f5f9;
        }

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

        /* 14. AI百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .wiki-card {
            background: #ffffff;
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
        }

        .wiki-card h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

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

        /* 15. 行业资讯与最新文章 */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .article-link-item {
            background: #ffffff;
            padding: 16px 20px;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
        }

        .article-link-item:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateX(4px);
        }

        /* 客户评论 6 条 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #ffffff;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid #e2e8f0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 16px;
        }

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

        .avatar-placeholder {
            width: 40px;
            height: 40px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .author-info h6 {
            font-size: 14px;
            font-weight: 700;
        }

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

        /* 16. 联系我们 & 表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .contact-info-panel {
            background: #ffffff;
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid #e2e8f0;
        }

        .info-row {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }

        .info-icon {
            font-size: 20px;
            color: var(--primary);
        }

        .qr-wrap {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px dashed #e2e8f0;
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .qr-img-box {
            width: 110px;
            height: 110px;
            border: 1px solid #e2e8f0;
            padding: 5px;
            border-radius: 8px;
            background: #ffffff;
        }

        .form-panel {
            background: #ffffff;
            padding: 35px;
            border-radius: var(--radius-lg);
            border: 1px solid #cbd5e1;
            box-shadow: var(--card-shadow);
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
        }

        textarea.form-control {
            min-height: 100px;
            resize: vertical;
        }

        /* 17. 加盟代理 */
        .franchise-banner {
            background: linear-gradient(135deg, #0d9488 0%, #0284c7 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 45px;
            text-align: center;
        }

        .franchise-banner h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .franchise-banner p {
            font-size: 16px;
            max-width: 700px;
            margin: 0 auto 24px auto;
            opacity: 0.95;
        }

        /* 页脚 */
        .site-footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 2fr;
            gap: 30px;
            margin-bottom: 40px;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #ccfbf1;
        }

        .friendship-links-box {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-bottom: 24px;
        }

        .friendship-links-box h6 {
            color: #e2e8f0;
            font-size: 14px;
            margin-bottom: 12px;
        }

        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .friendship-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 13px;
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .hero-h1 { font-size: 32px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .about-grid, .contact-grid { grid-template-columns: 1fr; }
            .solutions-grid, .price-grid, .wiki-grid, .reviews-grid { grid-template-columns: 1fr; }
            .network-box { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .cases-grid { grid-template-columns: 1fr; }
            .footer-top { grid-template-columns: 1fr 1fr; }
            .articles-list { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid #e2e8f0;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            }

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

            .mobile-menu-toggle {
                display: block;
            }

            .stats-grid { grid-template-columns: 1fr; }
            .network-box { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr; }
            .rating-banner { flex-direction: column; text-align: center; gap: 16px; }
            .rating-score { flex-direction: column; }
            .footer-top { grid-template-columns: 1fr; }
        }