/* 基础变量及重置 */
        :root {
            --primary: #10b981;
            --primary-hover: #059669;
            --primary-light: #e6f4f0;
            --secondary: #065f46;
            --bg-main: #fcfdfd;
            --bg-section: #f2faf7;
            --text-main: #1f2937;
            --text-muted: #4b5563;
            --border-color: #d1fae5;
            --shadow-sm: 0 2px 4px rgba(16, 185, 129, 0.05);
            --shadow-md: 0 4px 6px rgba(16, 185, 129, 0.1);
            --shadow-lg: 0 10px 15px rgba(16, 185, 129, 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-size: 16px;
        }

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

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

        /* 统一容器与版心对齐 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .section-bg {
            background-color: var(--bg-section);
        }

        /* 公共标题与眉标 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-header .tag {
            display: inline-block;
            padding: 6px 16px;
            background-color: var(--primary-light);
            color: var(--secondary);
            font-size: 14px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            color: #0f172a;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
        }

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

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

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

        /* 顶部导航 */
        .header-nav {
            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;
        }

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

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

        .ai-page-logo {
            height: 38px;
            width: auto;
        }

        .nav-links {
            display: flex;
            gap: 24px;
            align-items: center;
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

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

        /* 首页 Hero 首屏（无图设计） */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 90px;
            background: linear-gradient(135deg, #f0fdf4 0%, #e6f4f0 100%);
            text-align: center;
            overflow: hidden;
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .hero-section h1 {
            font-size: 44px;
            line-height: 1.25;
            color: #0f172a;
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
        }

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

        .stat-card {
            background: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        /* 关于我们 / 平台介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 28px;
            color: #0f172a;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .intro-text p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 16px;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .intro-feat-item {
            background: #ffffff;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .intro-feat-item h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #0f172a;
        }

        .intro-feat-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 全平台AIGC服务 (模型聚合) */
        .models-box {
            background: #ffffff;
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .models-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .model-tag {
            background: var(--bg-section);
            border: 1px solid var(--border-color);
            padding: 12px 8px;
            border-radius: 8px;
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            transition: var(--transition);
        }

        .model-tag:hover {
            background: var(--primary);
            color: #ffffff;
            transform: scale(1.05);
        }

        /* 一站式AIGC制作 & 全行业解决方案 */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: #ffffff;
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #0f172a;
        }

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

        /* 流程步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            text-align: center;
            z-index: 2;
        }

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

        .step-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: #0f172a;
        }

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

        /* 价格与Token比价表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            background: #ffffff;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        .compare-table th {
            background-color: var(--bg-section);
            color: var(--secondary);
            font-weight: 700;
            padding: 16px 20px;
            border-bottom: 2px solid var(--border-color);
        }

        .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

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

        .highlight-row {
            background-color: rgba(16, 185, 129, 0.05);
        }

        /* 技术培训模块 */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .training-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .training-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            background: #ffffff;
            padding: 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .training-badge {
            background: var(--primary);
            color: #ffffff;
            font-size: 12px;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 对比评测板块 */
        .review-box {
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            padding: 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 40px;
        }

        .review-score {
            text-align: center;
            flex-shrink: 0;
            padding: 30px;
            background: var(--bg-section);
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .score-num {
            font-size: 64px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .score-max {
            font-size: 20px;
            color: var(--text-muted);
        }

        .score-stars {
            color: #fbbf24;
            font-size: 24px;
            margin: 10px 0;
        }

        .review-desc h3 {
            font-size: 24px;
            color: #0f172a;
            margin-bottom: 16px;
        }

        .review-desc ul {
            list-style: none;
        }

        .review-desc li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .review-desc li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* 案例展示 (含图片资源) */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .case-card {
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .case-img-wrap {
            width: 100%;
            height: 250px;
            overflow: hidden;
            background: var(--bg-section);
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #0f172a;
        }

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

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

        .customer-card {
            background: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .customer-info {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

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

        .customer-name h5 {
            font-size: 14px;
            margin: 0;
            color: #0f172a;
        }

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

        /* FAQ折叠面板 (不少于10条) */
        .faq-wrapper {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 20px;
            background: #ffffff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: #0f172a;
            transition: var(--transition);
        }

        .faq-question:hover {
            background: var(--bg-section);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #ffffff;
        }

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

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

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

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

        .trouble-box {
            background: #ffffff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .trouble-box h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: #0f172a;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 10px;
        }

        .trouble-list {
            list-style: none;
        }

        .trouble-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-color);
            font-size: 14px;
        }

        .trouble-list li strong {
            color: var(--secondary);
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: #ffffff;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
            color: #0f172a;
        }

        .news-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }

        .news-link {
            color: var(--primary);
            font-weight: 600;
        }

        /* 联系我们 & 需求提交表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-box {
            background: #ffffff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

        .contact-form-box h3 {
            font-size: 22px;
            margin-bottom: 24px;
            color: #0f172a;
        }

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

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

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

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        .contact-info-box {
            background: var(--bg-section);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .contact-item-icon {
            color: var(--primary);
            font-size: 20px;
            font-weight: bold;
        }

        .contact-item-detail h5 {
            font-size: 16px;
            margin-bottom: 4px;
            color: #0f172a;
        }

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

        .qrcode-wrap {
            margin-top: 15px;
            display: flex;
            gap: 15px;
            align-items: center;
        }

        .qrcode-wrap img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        /* 友情链接与页脚 */
        .footer-links-section {
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            padding: 30px 0;
        }

        .links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 15px 30px;
            font-size: 14px;
            justify-content: center;
        }

        .links-container a {
            color: var(--text-muted);
        }

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

        footer {
            background-color: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 40px 0;
            color: var(--text-muted);
            font-size: 14px;
        }

        .footer-bottom {
            text-align: center;
            border-top: 1px solid var(--border-color);
            margin-top: 30px;
            padding-top: 20px;
        }

        /* 侧边悬浮窗口 */
        .floating-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .float-item:hover {
            background: var(--primary-light);
            transform: scale(1.05);
        }

        .float-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 10px;
            box-shadow: var(--shadow-lg);
            display: none;
        }

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

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .models-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .step-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .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: var(--shadow-md);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .intro-grid, .training-grid, .contact-grid, .trouble-grid, .case-grid {
                grid-template-columns: 1fr;
            }
            .review-box {
                flex-direction: column;
                text-align: center;
            }
            .card-grid-3, .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .models-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .hero-section h1 {
                font-size: 32px;
            }
        }