/* 变量及全局基础样式 */
        :root {
            --primary-color: #0052d9;
            --primary-hover: #0040a8;
            --secondary-color: #00d2ff;
            --dark-color: #0f172a;
            --light-color: #f5f7fa;
            --text-main: #334155;
            --text-dark: #0f172a;
            --border-color: #e2e8f0;
            --white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
            --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        }

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

        html {
            font-family: var(--font-family);
            scroll-behavior: smooth;
            color: var(--text-main);
            background-color: var(--white);
        }

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

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

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

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .btn-primary {
            background-color: var(--primary-color);
            color: var(--white);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 82, 217, 0.3);
        }

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

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

        /* 结构化标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 32px;
            color: var(--text-dark);
            margin-bottom: 15px;
            font-weight: 700;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background-color: var(--primary-color);
            margin: 10px auto 0;
            border-radius: 2px;
        }

        .section-header p {
            font-size: 18px;
            color: var(--text-main);
        }

        /* 顶部导航 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow);
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

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

        .ai-page-logo {
            height: 45px;
            object-fit: contain;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .nav-link:hover {
            color: var(--primary-color);
            background-color: rgba(0, 82, 217, 0.05);
        }

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

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 24px;
            height: 18px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 100%;
            height: 2px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* 页面大区样式定义 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* Hero 屏 - 首屏禁止出现图片 */
        .hero-section {
            padding-top: 170px;
            padding-bottom: 100px;
            background: linear-gradient(135deg, #f0f5ff 0%, #e6efff 100%);
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(rgba(0, 82, 217, 0.1) 1px, transparent 0);
            background-size: 24px 24px;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 38px;
            line-height: 1.3;
            color: var(--text-dark);
            font-weight: 800;
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            color: var(--primary-color);
        }

        .hero-content p {
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 35px;
            line-height: 1.8;
        }

        .hero-action-buttons {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        /* 官网外链显眼按钮 */
        .btn-hero-official {
            background-color: var(--primary-color);
            color: var(--white);
            font-size: 18px;
            padding: 14px 32px;
            border-radius: 8px;
            box-shadow: 0 8px 16px rgba(0, 82, 217, 0.25);
        }

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

        .hero-features-list {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .hero-feature-tag {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-color);
            box-shadow: var(--shadow);
        }

        /* 首屏右侧：科技感数据卡片组合，禁止图片 */
        .hero-visual-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .visual-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--primary-color);
            transition: var(--transition);
        }

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

        .visual-card .number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 8px;
        }

        .visual-card .label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .visual-card .desc {
            font-size: 12px;
            color: var(--text-main);
        }

        /* 数据指标卡片 */
        .metrics-section {
            background-color: var(--light-color);
            padding: 60px 0;
        }

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

        .metric-item {
            background-color: var(--white);
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .metric-item h3 {
            font-size: 40px;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .metric-item p {
            font-size: 16px;
            color: var(--text-dark);
            font-weight: 600;
        }

        /* 关于我们与平台介绍 */
        .about-section {
            background-color: var(--white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 26px;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-content p {
            margin-bottom: 16px;
            font-size: 16px;
            line-height: 1.8;
        }

        .about-highlights {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .highlight-box {
            border-left: 4px solid var(--primary-color);
            padding-left: 15px;
        }

        .highlight-box h4 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 5px;
        }

        .highlight-box p {
            font-size: 14px;
            margin: 0;
        }

        .about-image-area img {
            border-radius: 12px;
            box-shadow: var(--shadow-hover);
        }

        /* 全平台AIGC服务 */
        .services-section {
            background-color: var(--light-color);
        }

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

        .service-card {
            background-color: var(--white);
            padding: 35px 30px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(0, 82, 217, 0.1);
            color: var(--primary-color);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 20px;
            color: var(--text-dark);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .model-tag {
            font-size: 12px;
            background-color: var(--light-color);
            color: var(--text-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 一站式AIGC制作与场景 */
        .production-section {
            background-color: var(--white);
        }

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

        .scene-card {
            background-color: var(--light-color);
            border-radius: 10px;
            padding: 24px;
            transition: var(--transition);
        }

        .scene-card:hover {
            background-color: var(--primary-color);
            color: var(--white);
            transform: scale(1.02);
        }

        .scene-card:hover h3, .scene-card:hover p {
            color: var(--white);
        }

        .scene-card h3 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

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

        /* 解决方案 */
        .solutions-section {
            background-color: var(--light-color);
        }

        .solutions-tabs-container {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .solutions-nav {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .sol-tab-btn {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
        }

        .sol-tab-btn.active, .sol-tab-btn:hover {
            background-color: var(--primary-color);
            color: var(--white);
            border-color: var(--primary-color);
        }

        .solutions-content {
            background-color: var(--white);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }

        .sol-panel {
            display: none;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .sol-panel.active {
            display: grid;
        }

        .sol-panel-text h3 {
            font-size: 24px;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .sol-panel-text p {
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .sol-panel-list {
            margin-bottom: 25px;
        }

        .sol-panel-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            font-size: 15px;
        }

        .sol-panel-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
        }

        /* 行业案例展示 */
        .cases-section {
            background-color: var(--white);
        }

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

        .case-card {
            background-color: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .case-img-wrap {
            position: relative;
            overflow: hidden;
        }

        .case-img-wrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-body {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: rgba(0, 82, 217, 0.1);
            color: var(--primary-color);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .case-body h3 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 10px;
            font-weight: 700;
        }

        .case-body p {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 15px;
        }

        /* 标准化AIGC流程 & 时间线 */
        .workflow-section {
            background-color: var(--light-color);
        }

        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--border-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--white);
            border: 4px solid var(--primary-color);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--white);
            position: relative;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

        .timeline-content h3 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 14px;
            margin: 0;
        }

        /* 技术标准 */
        .standards-section {
            background-color: var(--white);
        }

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

        .standard-card {
            padding: 30px;
            background-color: var(--light-color);
            border-radius: 8px;
            border-top: 4px solid var(--primary-color);
        }

        .standard-card h3 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .standard-card p {
            font-size: 14px;
        }

        /* 对比评测 - 突出 9.9分 与 五星推荐 */
        .evaluation-section {
            background-color: var(--light-color);
        }

        .eval-container {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .eval-score-card {
            background-color: var(--primary-color);
            color: var(--white);
            padding: 40px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow);
        }

        .eval-score-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
        }

        .score-number {
            font-size: 64px;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 10px;
        }

        .score-star {
            font-size: 28px;
            color: #ffc107;
            margin-bottom: 15px;
        }

        .score-label {
            font-size: 15px;
            opacity: 0.9;
        }

        .eval-table-wrap {
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            overflow-x: auto;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 500px;
        }

        .eval-table th, .eval-table td {
            padding: 14px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .eval-table th {
            background-color: var(--light-color);
            color: var(--text-dark);
            font-weight: 700;
        }

        .eval-table td strong {
            color: var(--primary-color);
        }

        /* Token 比价参考 */
        .pricing-section {
            background-color: var(--white);
        }

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

        .pricing-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 35px 30px;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .pricing-card.popular {
            border-color: var(--primary-color);
            box-shadow: var(--shadow-hover);
        }

        .pricing-card.popular::before {
            content: '最佳性价比';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary-color);
            color: var(--white);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 15px;
            border-radius: 20px;
        }

        .pricing-card h3 {
            font-size: 20px;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

        .pricing-card .price {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .pricing-card .price span {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
        }

        .pricing-list {
            margin-bottom: 30px;
            text-align: left;
        }

        .pricing-list li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
            font-size: 14px;
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-section {
            background-color: var(--light-color);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background-color: var(--white);
            border-radius: 10px;
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow);
            border-bottom: 4px solid var(--border-color);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-bottom-color: var(--primary-color);
        }

        .training-card h3 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .training-card p {
            font-size: 13px;
        }

        /* 客户评论卡片 */
        .reviews-section {
            background-color: var(--white);
        }

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

        .review-card {
            background-color: var(--light-color);
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .review-text {
            font-size: 14px;
            font-style: italic;
            line-height: 1.8;
            margin-bottom: 20px;
        }

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

        .review-user-info h4 {
            font-size: 15px;
            color: var(--text-dark);
            font-weight: 700;
        }

        .review-user-info p {
            font-size: 12px;
            margin: 0;
        }

        /* 全国服务网络 & 加盟代理 */
        .network-section {
            background-color: var(--light-color);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .network-item {
            background-color: var(--white);
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }

        .network-item h3 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .agent-callout {
            background-color: var(--white);
            padding: 30px;
            border-radius: 12px;
            border-left: 6px solid var(--primary-color);
            box-shadow: var(--shadow);
        }

        .agent-callout h3 {
            font-size: 20px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .agent-callout p {
            font-size: 14px;
            margin-bottom: 20px;
        }

        /* 帮助中心 / 常见问题自助排查 / AI术语百科 */
        .help-section {
            background-color: var(--white);
        }

        .help-tabs-nav {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
        }

        .help-tab-btn {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            padding: 10px 20px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
        }

        .help-tab-btn.active {
            background-color: var(--primary-color);
            color: var(--white);
            border-color: var(--primary-color);
        }

        .help-pane {
            display: none;
        }

        .help-pane.active {
            display: block;
        }

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

        .help-item-box {
            background-color: var(--light-color);
            padding: 24px;
            border-radius: 8px;
        }

        .help-item-box h3 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .help-item-box p {
            font-size: 14px;
            margin: 0;
        }

        /* 常见用户问题 FAQ 折叠面板 */
        .faq-section {
            background-color: var(--light-color);
        }

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

        .faq-item {
            background-color: var(--white);
            margin-bottom: 12px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            overflow: hidden;
        }

        .faq-header-btn {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-header-btn:hover {
            background-color: rgba(0, 82, 217, 0.02);
        }

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

        .faq-body-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--white);
        }

        .faq-body-inner {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-main);
        }

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

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

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

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

        .article-card {
            background-color: var(--white);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
        }

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

        .article-date {
            font-size: 12px;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .article-card h3 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .article-card p {
            font-size: 13px;
            margin-bottom: 15px;
        }

        /* 智能需求匹配与联系表单 */
        .contact-section {
            background-color: var(--light-color);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info-area {
            background-color: var(--white);
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }

        .contact-info-area h3 {
            font-size: 22px;
            color: var(--text-dark);
            margin-bottom: 24px;
        }

        .contact-details {
            margin-bottom: 30px;
        }

        .contact-detail-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
            font-size: 15px;
        }

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

        .qr-item {
            text-align: center;
            font-size: 12px;
        }

        .qr-item img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .contact-form-area {
            background-color: var(--white);
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }

        .contact-form-area h3 {
            font-size: 22px;
            color: var(--text-dark);
            margin-bottom: 24px;
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.15);
        }

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

        /* 标签云 */
        .tags-cloud-section {
            background-color: var(--white);
            padding: 40px 0;
            text-align: center;
        }

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

        .tag-cloud-item {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-main);
            transition: var(--transition);
        }

        .tag-cloud-item:hover {
            background-color: var(--primary-color);
            color: var(--white);
            border-color: var(--primary-color);
        }

        /* 页脚 */
        .footer {
            background-color: var(--dark-color);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 30px 0;
            font-size: 14px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-logo img {
            height: 40px;
            margin-bottom: 20px;
        }

        .footer-desc {
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-links h3, .footer-contact h3 {
            color: var(--white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .footer-links-list a {
            color: rgba(255, 255, 255, 0.7);
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-friend-links {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .footer-friend-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
        }

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

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .kefu-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: var(--transition);
            font-size: 12px;
            font-weight: 700;
            text-align: center;
            line-height: 1.2;
        }

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

        /* 响应式断点设计 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .cases-grid, .reviews-grid, .pricing-grid, .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .about-grid, .sol-panel, .eval-container, .network-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .about-image-area {
                order: -1;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow);
                border-top: 1px solid var(--border-color);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .services-grid, .cases-grid, .reviews-grid, .pricing-grid, .articles-grid, .training-grid, .scenes-grid, .help-grid-list {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item::after {
                left: 21px;
            }
            .right {
                left: 0%;
            }
        }