/* 基础与主题变量 (春绿薄荷清新风) */
        :root {
            --primary: #20B2AA;        /* 浅海绿/薄荷绿 */
            --primary-light: #E8F8F5;  /* 极浅薄荷绿背景 */
            --primary-hover: #117A65;  /* 深薄荷绿 */
            --accent: #A3E4D7;         /* 辅助薄荷绿 */
            --dark: #2C3E50;           /* 深蓝灰文字 */
            --light-gray: #F8F9F9;     /* 浅灰底色 */
            --border-color: #E5E8E8;   /* 边框色 */
            --card-shadow: 0 8px 30px rgba(32, 178, 170, 0.06);
            --card-shadow-hover: 0 12px 40px rgba(32, 178, 170, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 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;
            color: var(--dark);
            background-color: #FFFFFF;
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

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

        ul {
            list-style: none;
        }

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

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: var(--transition);
        }

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

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

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

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: 1px;
        }

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark);
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .nav-btn {
            background-color: var(--primary);
            color: #FFFFFF !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 0.9rem;
        }

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

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

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

        /* 页面大板块通用样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-title p {
            color: #7F8C8D;
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* 1. Hero 首屏 - 纯色渐变与微动效，无图片 */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-light) 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--accent);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 25px;
            animation: pulse 2s infinite;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--dark);
            max-width: 900px;
            margin: 0 auto 25px;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: #566573;
            max-width: 750px;
            margin: 0 auto 40px;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 1.05rem;
            box-shadow: 0 4px 15px rgba(32, 178, 170, 0.3);
        }

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

        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary-hover);
            border: 2px solid var(--primary);
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: bold;
            font-size: 1.05rem;
        }

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

        /* 动画 */
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        /* 2. 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-hover);
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: #7F8C8D;
            font-weight: 500;
        }

        /* 3. 关于我们 */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .about-text p {
            color: #5D6D7E;
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

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

        .about-feat-item {
            background-color: var(--primary-light);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .about-feat-item h4 {
            color: var(--primary-hover);
            margin-bottom: 8px;
        }

        .about-feat-item p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* 4. 全平台AIGC服务 & 5. 一站式AIGC制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px 30px;
            transition: var(--transition);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            color: var(--primary-hover);
            font-size: 1.8rem;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .service-card p {
            color: #7F8C8D;
            font-size: 0.95rem;
        }

        /* 标签云组件 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 40px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag-item {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--accent);
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        /* 6. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

        .solution-info {
            padding: 30px;
        }

        .solution-info h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .solution-info p {
            color: #7F8C8D;
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .solution-list {
            margin-top: 15px;
            font-size: 0.9rem;
            color: var(--dark);
        }

        .solution-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
        }

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

        /* 7. 标准化AIGC流程 (时间线/步骤组件) */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

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

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            width: 50%;
            padding: 0 40px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            position: absolute;
            top: 0;
            width: 20px;
            height: 20px;
            background-color: var(--primary);
            border: 4px solid #FFFFFF;
            border-radius: 50%;
            z-index: 10;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -10px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -10px;
        }

        .timeline-content {
            background-color: var(--primary-light);
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--card-shadow);
        }

        .timeline-content h3 {
            color: var(--primary-hover);
            margin-bottom: 8px;
            font-size: 1.15rem;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: #5D6D7E;
        }

        /* 8. 技术标准 & 全国服务网络 */
        .tech-network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tech-box, .network-box {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .tech-box h3, .network-box h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: var(--dark);
            border-left: 4px solid var(--primary);
            padding-left: 15px;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .network-item {
            background-color: var(--light-gray);
            padding: 15px;
            border-radius: 8px;
            text-align: center;
        }

        .network-item strong {
            display: block;
            color: var(--primary-hover);
            margin-bottom: 5px;
        }

        /* 9. 客户案例中心 (包含真实图片) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

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

        .case-image-container {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            background-color: var(--primary-light);
            overflow: hidden;
        }

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

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

        .case-content {
            padding: 25px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
            font-weight: bold;
        }

        .case-content h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .case-content p {
            color: #7F8C8D;
            font-size: 0.9rem;
        }

        /* 10. 对比评测 (包含特定要求评分) */
        .comparison-table-wrapper {
            overflow-x: auto;
            margin-bottom: 30px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .comparison-table th, .comparison-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
        }

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

        .comparison-table tr:hover {
            background-color: rgba(32, 178, 170, 0.02);
        }

        .highlight-col {
            background-color: rgba(32, 178, 170, 0.05);
            font-weight: bold;
            color: var(--primary-hover);
        }

        .evaluation-card {
            background: linear-gradient(135deg, var(--primary-light) 0%, #FFFFFF 100%);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

        .eval-score {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .score-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary-hover);
            line-height: 1;
        }

        .score-meta h4 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .score-stars {
            color: #F1C40F;
            font-size: 1.2rem;
        }

        .eval-desc {
            max-width: 600px;
            font-size: 0.95rem;
            color: #5D6D7E;
        }

        /* 11. 智能需求匹配与表单 */
        .form-section {
            background-color: var(--primary-light);
        }

        .form-wrapper {
            background-color: #FFFFFF;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            padding: 40px;
            max-width: 800px;
            margin: 0 auto;
            border: 1px solid var(--border-color);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 25px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group.full-width {
            grid-column: 1 / -1;
        }

        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(32, 178, 170, 0.1);
        }

        .form-submit-btn {
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            padding: 14px 40px;
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }

        .form-submit-btn:hover {
            background-color: var(--primary-hover);
        }

        /* 12. Token比价参考 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .price-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

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

        .price-card.popular::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary);
            color: #FFFFFF;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 30px;
            font-weight: bold;
        }

        .price-header h3 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .price-amount {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-hover);
            margin: 15px 0;
        }

        .price-amount span {
            font-size: 0.9rem;
            font-weight: normal;
            color: #7F8C8D;
        }

        .price-features {
            font-size: 0.85rem;
            color: #5D6D7E;
            margin-bottom: 25px;
            line-height: 2;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .training-text h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .training-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 30px;
        }

        .training-item-detail {
            background-color: var(--light-gray);
            padding: 15px 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .training-item-detail strong {
            display: block;
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .training-item-detail span {
            font-size: 0.85rem;
            color: #7F8C8D;
        }

        .training-img-placeholder {
            width: 100%;
            height: 350px;
            background-color: var(--primary-light);
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: var(--primary-hover);
            border: 2px dashed var(--accent);
            padding: 30px;
            text-align: center;
        }

        .training-img-placeholder svg {
            width: 80px;
            height: 80px;
            fill: currentColor;
            margin-bottom: 20px;
        }

        /* 15. 帮助中心 & 16. 常见用户问题 FAQ & 17. 常见问题自助排查 & 18. 网站术语百科 */
        .faq-glossary-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: #FFFFFF;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 18px 24px;
            background-color: var(--light-gray);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--dark);
            user-select: none;
            transition: var(--transition);
        }

        .faq-header:hover {
            background-color: var(--primary-light);
            color: var(--primary-hover);
        }

        .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: #5D6D7E;
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-body {
            max-height: 300px;
        }

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

        /* 术语百科与自助排查 */
        .glossary-box {
            background-color: var(--primary-light);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--accent);
        }

        .glossary-box h3 {
            font-size: 1.3rem;
            color: var(--primary-hover);
            margin-bottom: 20px;
        }

        .glossary-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .glossary-item dt {
            font-weight: bold;
            color: var(--dark);
            font-size: 0.95rem;
        }

        .glossary-item dd {
            font-size: 0.85rem;
            color: #5D6D7E;
            margin-left: 0;
            margin-top: 5px;
        }

        /* 19. 行业资讯 / 知识库 (最新文章) */
        .blog-section {
            background-color: var(--light-gray);
        }

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

        .article-card {
            background-color: #FFFFFF;
            border-radius: 12px;
            padding: 25px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

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

        .article-card h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .article-meta {
            font-size: 0.8rem;
            color: #95A5A6;
            margin-bottom: 20px;
        }

        .article-link {
            font-weight: bold;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 20. 客户评论卡片 (6条) */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .testimonial-card {
            background-color: #FFFFFF;
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            position: relative;
        }

        .testimonial-quote {
            font-size: 0.95rem;
            color: #5D6D7E;
            margin-bottom: 20px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        .testimonial-quote::before {
            content: '“';
            font-size: 4rem;
            color: var(--accent);
            position: absolute;
            top: -20px;
            left: -10px;
            z-index: -1;
            opacity: 0.5;
        }

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

        .avatar-placeholder {
            width: 45px;
            height: 45px;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.1rem;
        }

        .author-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }

        .author-info span {
            font-size: 0.8rem;
            color: #7F8C8D;
        }

        /* 21. 联系我们 (带二维码及各种联系方式) */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 50px;
        }

        .contact-info-list {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

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

        .contact-info-icon {
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-hover);
            flex-shrink: 0;
        }

        .contact-info-text h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .contact-info-text p, .contact-info-text a {
            color: #5D6D7E;
            font-size: 0.95rem;
        }

        .contact-social-channels {
            background-color: var(--light-gray);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .contact-social-channels h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .qr-codes-wrapper {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .qr-box {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .qr-box img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 5px;
            background: #FFFFFF;
        }

        .qr-box span {
            font-size: 0.85rem;
            color: #5D6D7E;
            font-weight: 500;
        }

        /* 友情链接与底部 */
        .footer-links-section {
            background-color: var(--light-gray);
            padding: 30px 0;
            border-top: 1px solid var(--border-color);
        }

        .footer-links-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.85rem;
        }

        .friend-links span {
            color: #7F8C8D;
            font-weight: bold;
        }

        .friend-links a {
            color: #5D6D7E;
        }

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

        footer {
            background-color: var(--dark);
            color: #BDC3C7;
            padding: 40px 0;
            font-size: 0.9rem;
        }

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

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

        .footer-logo img {
            height: 35px;
            filter: brightness(0) invert(1);
        }

        .footer-copy {
            text-align: center;
            font-size: 0.8rem;
            color: #7F8C8D;
        }

        /* 浮动组件：客服与返回顶部 */
        .floating-widgets {
            position: fixed;
            bottom: 40px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: #FFFFFF;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-hover);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-kefu-popover {
            position: absolute;
            right: 65px;
            bottom: 0;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: var(--card-shadow-hover);
            display: none;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            width: 140px;
        }

        .float-kefu-popover img {
            width: 110px;
            height: 110px;
        }

        .float-kefu-popover span {
            font-size: 0.8rem;
            color: var(--dark);
            font-weight: 500;
        }

        .float-btn:hover .float-kefu-popover {
            display: flex;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 20px;
            }
            .services-grid, .solutions-grid, .cases-grid, .testimonials-grid, .articles-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .price-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tech-network-grid, .training-container, .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--card-shadow);
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 2rem;
            }

            .about-content {
                grid-template-columns: 1fr;
            }

            .services-grid, .solutions-grid, .cases-grid, .testimonials-grid, .articles-list, .price-grid {
                grid-template-columns: 1fr;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .timeline-badge {
                left: 10px !important;
            }

            .form-grid {
                grid-template-columns: 1fr;
            }

            .faq-glossary-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                flex-direction: column;
                text-align: center;
            }
        }