/* 变量定义 - 渐变青科技风 (浅色基调) */
        :root {
            --primary-teal: #0d9488;
            --primary-cyan: #06b6d4;
            --tech-dark: #0f172a;
            --tech-gray: #334155;
            --light-bg: #f4fbfb;
            --card-bg: #ffffff;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(13, 148, 136, 0.1);
            --shadow-md: 0 4px 6px -1px rgba(13, 148, 136, 0.1), 0 2px 4px -1px rgba(13, 148, 136, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(13, 148, 136, 0.1), 0 4px 6px -2px rgba(13, 148, 136, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 基础重置 */
        * {
            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(--tech-gray);
            background-color: var(--light-bg);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* 统一标题样式 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2rem;
            color: var(--tech-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-teal), var(--primary-cyan));
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1.1rem;
            color: #64748b;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-teal), var(--primary-cyan));
            color: #ffffff;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            opacity: 0.95;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

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

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

        /* 导航栏 */
        header.nav-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-teal), var(--primary-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--tech-gray);
            font-weight: 500;
            transition: var(--transition);
            font-size: 0.95rem;
        }

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

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

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--tech-dark);
            margin: 5px 0;
            transition: var(--transition);
        }

        /* 1. 首页 / Hero 区 (首屏无图) */
        #home {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(13, 148, 136, 0.08) 0%, transparent 50%),
                        var(--light-bg);
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary-teal);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 25px;
            border: 1px solid rgba(13, 148, 136, 0.2);
        }

        .hero-title {
            font-size: 3rem;
            color: var(--tech-dark);
            line-height: 1.2;
            margin-bottom: 25px;
            font-weight: 800;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--primary-teal), var(--primary-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            max-width: 800px;
            margin: 0 auto 40px;
            font-size: 1.2rem;
            color: var(--tech-gray);
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        /* 数据指标卡片 (数据统计) */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .stat-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-teal);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: #64748b;
        }

        /* 2. 关于我们 */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            margin-bottom: 15px;
            color: var(--tech-gray);
        }

        .about-bullets {
            margin-top: 25px;
            list-style: none;
        }

        .about-bullets li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-weight: 500;
        }

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

        .about-features {
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.05), rgba(6, 182, 212, 0.05));
            border: 1px solid rgba(13, 148, 136, 0.1);
            border-radius: 16px;
            padding: 30px;
        }

        .feature-box {
            margin-bottom: 20px;
        }

        .feature-box:last-child {
            margin-bottom: 0;
        }

        .feature-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--tech-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-title::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--primary-cyan);
            border-radius: 50%;
        }

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

        .service-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px 25px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary-teal), var(--primary-cyan));
            opacity: 0;
            transition: var(--transition);
        }

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

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--tech-dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: #64748b;
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tag {
            font-size: 0.8rem;
            padding: 3px 8px;
            background-color: rgba(6, 182, 212, 0.08);
            color: var(--primary-teal);
            border-radius: 4px;
        }

        /* 4. 一站式AIGC制作 (全自动制作) */
        .workflow-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .workflow-visuals {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .workflow-visual-item {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .workflow-visual-item.full-width {
            grid-column: span 2;
        }

        .workflow-visual-item h4 {
            color: var(--tech-dark);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .workflow-visual-item p {
            font-size: 0.9rem;
            color: #64748b;
        }

        /* 包含方版图展示 */
        .workflow-image-container {
            margin-top: 15px;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .workflow-image-container img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 5. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .solution-card:hover {
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.02), rgba(6, 182, 212, 0.02));
            border-color: var(--primary-teal);
            transform: translateY(-3px);
        }

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

        /* 6. 全国服务网络 */
        .network-section {
            background: linear-gradient(180deg, var(--card-bg) 0%, var(--light-bg) 100%);
        }

        .network-map-placeholder {
            background: radial-gradient(circle, rgba(13, 148, 136, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
            border: 1px dashed var(--primary-teal);
            border-radius: 16px;
            padding: 40px;
            text-align: center;
            margin-top: 30px;
        }

        .network-nodes {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-top: 20px;
        }

        .network-tag {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--tech-dark);
            box-shadow: var(--shadow-sm);
        }

        /* 7. 标准化AIGC流程 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0;
        }

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

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

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            right: -8px;
            background-color: #ffffff;
            border: 4px solid var(--primary-teal);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -8px;
        }

        .timeline-content {
            padding: 20px;
            background-color: var(--card-bg);
            position: relative;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .timeline-content h3 {
            font-size: 1.1rem;
            color: var(--primary-teal);
            margin-bottom: 8px;
        }

        /* 8. 技术标准 */
        .standards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .standard-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
        }

        .standard-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-cyan);
        }

        /* 9. 客户案例中心 (包含横版图与宣传图) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .case-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #f1f5f9;
        }

        .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: 25px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-tag {
            align-self: flex-start;
            font-size: 0.8rem;
            padding: 4px 10px;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary-teal);
            border-radius: 4px;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .case-info h3 {
            font-size: 1.25rem;
            color: var(--tech-dark);
            margin-bottom: 10px;
        }

        .case-info p {
            color: #64748b;
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        /* 10. 对比评测 */
        .rating-box {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

        .rating-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 25px;
            margin-bottom: 25px;
        }

        .rating-score-area {
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

        .rating-stars {
            color: #fbbf24;
            font-size: 1.5rem;
            letter-spacing: 2px;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
        }

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

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

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

        .comparison-table tr:hover {
            background-color: rgba(13, 148, 136, 0.02);
        }

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

        /* 12. Token比价参考 */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .token-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            transition: var(--transition);
        }

        .token-card:hover {
            border-color: var(--primary-cyan);
            box-shadow: var(--shadow-md);
        }

        .token-model-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--tech-dark);
            margin-bottom: 15px;
            display: flex;
            justify-content: space-between;
        }

        .token-price-val {
            font-size: 1.5rem;
            color: var(--primary-teal);
            font-weight: 800;
            margin-bottom: 10px;
        }

        /* 13 & 14. 职业技术培训 & 人工智能培训 */
        .training-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .training-courses {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
        }

        .course-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .course-card:hover {
            border-color: var(--primary-teal);
            background-color: rgba(13, 148, 136, 0.01);
        }

        .course-card h4 {
            color: var(--tech-dark);
            margin-bottom: 5px;
        }

        .course-card span {
            font-size: 0.85rem;
            background-color: rgba(13, 148, 136, 0.1);
            color: var(--primary-teal);
            padding: 3px 10px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 15 & 16 & 17 & 18. 帮助中心 / FAQ / 自助排查 / 术语百科 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-trigger {
            width: 100%;
            padding: 20px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--tech-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-trigger::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary-teal);
            transition: var(--transition);
        }

        .faq-item.active .faq-trigger::after {
            content: '−';
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: rgba(244, 251, 251, 0.5);
        }

        .faq-content-inner {
            padding: 20px;
            border-top: 1px solid var(--border-color);
            color: var(--tech-gray);
        }

        .troubleshoot-box {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            margin-top: 50px;
        }

        .troubleshoot-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .step-card {
            background-color: var(--light-bg);
            padding: 20px;
            border-radius: 8px;
            position: relative;
        }

        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(13, 148, 136, 0.15);
            position: absolute;
            top: 10px;
            right: 15px;
        }

        .step-card h4 {
            color: var(--tech-dark);
            margin-bottom: 8px;
        }

        /* 18. AI术语百科 (标签云形式) */
        .term-wiki {
            margin-top: 50px;
            text-align: center;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 20px;
        }

        .wiki-tag {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--tech-gray);
            cursor: pointer;
            transition: var(--transition);
        }

        .wiki-tag:hover {
            border-color: var(--primary-teal);
            color: var(--primary-teal);
            transform: scale(1.05);
        }

        /* 客户评论卡片 (6条) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-style: italic;
            margin-bottom: 20px;
            color: var(--tech-gray);
        }

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

        .avatar-placeholder {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-teal), var(--primary-cyan));
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .user-meta h4 {
            font-size: 0.95rem;
            color: var(--tech-dark);
        }

        .user-meta span {
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 19. 行业资讯 / 知识库 (最新文章) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .news-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 25px;
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: var(--primary-teal);
            box-shadow: var(--shadow-md);
        }

        .news-card h3 {
            font-size: 1.1rem;
            color: var(--tech-dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            color: var(--primary-teal);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .news-link:hover {
            text-decoration: underline;
        }

        /* 20. 联系我们 & 11.智能需求匹配 (表单区) */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-panel {
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.02), rgba(6, 182, 212, 0.02));
            border: 1px solid rgba(13, 148, 136, 0.1);
            border-radius: 16px;
            padding: 40px;
        }

        .contact-info-panel h3 {
            font-size: 1.8rem;
            color: var(--tech-dark);
            margin-bottom: 25px;
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 20px;
        }

        .info-item label {
            font-weight: 700;
            color: var(--primary-teal);
            min-width: 80px;
        }

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

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

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

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-family: inherit;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-teal);
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
        }

        /* 21. 加盟代理 (独立版块或推广) */
        .partner-section {
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.05), rgba(6, 182, 212, 0.05));
            border-radius: 16px;
            padding: 50px;
            text-align: center;
        }

        .partner-section h3 {
            font-size: 2rem;
            color: var(--tech-dark);
            margin-bottom: 20px;
        }

        .partner-benefits {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin: 40px 0;
        }

        .benefit-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--shadow-sm);
        }

        /* 浮动客服入口 */
        .floating-service {
            position: fixed;
            bottom: 40px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 15px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            text-decoration: none;
            color: var(--primary-teal);
        }

        .float-btn:hover {
            background-color: var(--primary-teal);
            color: #ffffff;
            transform: translateY(-3px);
        }

        .qr-popover {
            position: absolute;
            right: 65px;
            bottom: 0;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 160px;
        }

        .qr-popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }

        .qr-popover p {
            font-size: 0.8rem;
            margin-top: 8px;
            color: var(--tech-dark);
        }

        .float-btn:hover .qr-popover {
            display: block;
        }

        /* 友情链接 */
        .footer-links {
            padding: 20px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
            font-size: 0.85rem;
        }

        .footer-links a {
            color: var(--tech-gray);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 页脚 */
        footer {
            background-color: var(--tech-dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        footer h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

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

        .footer-logo-area {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

        .footer-menu li {
            margin-bottom: 10px;
        }

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

        .footer-menu a:hover {
            color: #ffffff;
        }

        .copyright-area {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #1e293b;
            font-size: 0.8rem;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid, .services-grid, .solutions-grid, .standards-grid, .news-grid, .reviews-grid, .partner-benefits {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-wrapper, .workflow-showcase, .training-wrapper, .contact-wrapper {
                grid-template-columns: 1fr;
            }
            .workflow-visuals {
                grid-template-columns: 1fr;
            }
            .workflow-visual-item.full-width {
                grid-column: span 1;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
            }
            .timeline-item.right {
                left: 0;
            }
            .timeline-item::after {
                left: 12px;
                right: auto;
            }
            .troubleshoot-steps {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-title {
                font-size: 2rem;
            }
            .stats-grid, .services-grid, .solutions-grid, .standards-grid, .news-grid, .reviews-grid, .partner-benefits, .cases-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }