:root {
            /* 斑斓彩调风色彩定义 - 活力现代但保持高对比度 */
            --primary-grad: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
            --secondary-grad: linear-gradient(90deg, #f59e0b 0%, #e11d48 100%);
            --accent-blue: #2563eb;
            --accent-purple: #7c3aed;
            --accent-pink: #db2777;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --border-light: #e2e8f0;
            --glow-shadow: 0 10px 30px -5px rgba(99, 102, 241, 0.15);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 页面级宽度容器 */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 斑斓彩调风背景修饰 - 柔和的散布光晕，不遮挡文字，不作为首屏图片 */
        .blob-bg {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            filter: blur(100px);
            opacity: 0.12;
            z-index: -1;
            pointer-events: none;
        }
        .blob-1 { background: #6366f1; top: 10%; left: -10%; }
        .blob-2 { background: #ec4899; top: 40%; right: -10%; }
        .blob-3 { background: #3b82f6; top: 80%; left: 10%; }

        /* 按钮通用样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 99px;
            text-decoration: none;
            transition: var(--transition-smooth);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: var(--primary-grad);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168, 85, 247, 0.4);
        }
        .btn-secondary {
            background: #ffffff;
            color: var(--text-main);
            border: 2px solid var(--border-light);
        }
        .btn-secondary:hover {
            border-color: var(--accent-purple);
            color: var(--accent-purple);
            transform: translateY(-2px);
        }

        /* 标题设计 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 15px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 导航栏 */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            z-index: 100;
            border-bottom: 1px solid var(--border-light);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            max-height: 40px;
            width: auto;
        }
        .brand-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }
        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition-smooth);
        }
        .nav-menu a:hover {
            color: var(--accent-purple);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-main);
        }

        /* Hero首屏 - 严禁出现任何图片或背景图 */
        .hero-section {
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
        }
        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 99px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--accent-purple);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 25px;
            border: 1px solid rgba(99, 102, 241, 0.2);
        }
        h1.hero-title {
            font-size: 2.75rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        h1.hero-title span {
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 750px;
            margin: 0 auto 35px;
        }
        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        /* 数据指标卡片 */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }
        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--glow-shadow);
            transition: var(--transition-smooth);
        }
        .data-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-pink);
        }
        .data-val {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }
        .data-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* 关于我们 & 平台介绍 */
        .section-padding {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }
        .about-content h3 {
            font-size: 1.75rem;
            margin-bottom: 20px;
            font-weight: 750;
        }
        .about-text {
            color: var(--text-muted);
            margin-bottom: 25px;
            font-size: 1rem;
        }
        .about-features {
            list-style: none;
        }
        .about-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            color: var(--text-main);
            font-weight: 500;
        }
        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent-pink);
            font-weight: 900;
            font-size: 1.1rem;
        }
        /* 横版素材图应用在内容区 */
        .about-visual {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--glow-shadow);
            border: 3px solid #fff;
        }
        .about-visual img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 全平台AIGC服务 - 标签云与卡片组合 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .service-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-grad);
            opacity: 0;
            transition: var(--transition-smooth);
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(99, 102, 241, 0.1);
        }
        .service-card:hover::after {
            opacity: 1;
        }
        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            font-weight: 700;
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        
        /* 标签云 */
        .tag-cloud-wrapper {
            margin-top: 40px;
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            text-align: center;
        }
        .tag-cloud-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-muted);
        }
        .tag-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .tag-item {
            padding: 6px 14px;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition-smooth);
        }
        .tag-item:hover {
            background: var(--primary-grad);
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作场景 */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scene-card {
            background: #fff;
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition-smooth);
        }
        .scene-card:hover {
            border-color: var(--accent-purple);
            transform: scale(1.03);
        }
        .scene-badge {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(168, 85, 247, 0.1);
            color: var(--accent-purple);
            font-size: 0.75rem;
            border-radius: 4px;
            margin-bottom: 12px;
            font-weight: 700;
        }
        .scene-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .scene-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 标准化AIGC流程步骤 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-item {
            background: #fff;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            position: relative;
        }
        .step-num {
            font-size: 3rem;
            font-weight: 900;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.15) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: absolute;
            top: 10px;
            right: 15px;
        }
        .step-item h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            margin-top: 15px;
            font-weight: 700;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 全国服务网络 & 技术标准 */
        .network-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }
        .network-info {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            border: 1px solid var(--border-light);
        }
        .network-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 20px;
        }
        .network-item {
            padding: 15px;
            background: var(--bg-light);
            border-radius: 10px;
            border-left: 4px solid var(--accent-purple);
        }
        .network-item strong {
            display: block;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        .network-item span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 客户案例中心 - 引入限定图片 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }
        .case-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition-smooth);
        }
        .case-card:hover {
            box-shadow: var(--glow-shadow);
        }
        .case-image {
            height: 220px;
            overflow: hidden;
            background: #f1f5f9;
        }
        .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }
        .case-card:hover .case-image img {
            transform: scale(1.05);
        }
        .case-info {
            padding: 24px;
        }
        .case-info h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        /* 对比评测 - 突出五星 & 9.9分 */
        .review-showcase {
            background: var(--primary-grad);
            color: #fff;
            border-radius: 20px;
            padding: 40px;
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
        }
        .review-score-area {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .score-big {
            font-size: 4.5rem;
            font-weight: 900;
            line-height: 1;
        }
        .score-meta h4 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 5px;
        }
        .stars {
            color: #f59e0b;
            font-size: 1.3rem;
        }
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-light);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }
        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-light);
        }
        .compare-table th {
            background: var(--bg-light);
            font-weight: 700;
            color: var(--text-main);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table td.highlight {
            font-weight: 700;
            color: var(--accent-purple);
            background: rgba(99, 102, 241, 0.02);
        }

        /* Token 比价参考 */
        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 人工智能培训业务 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .training-card {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            padding: 25px;
            transition: var(--transition-smooth);
        }
        .training-card:hover {
            border-color: var(--accent-pink);
            box-shadow: 0 10px 25px rgba(236, 72, 153, 0.1);
        }
        .cert-badge {
            background: #fef2f2;
            color: #ef4444;
            padding: 4px 10px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 15px;
        }
        .training-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .training-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        /* 帮助中心 & FAQ折叠面板 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
            max-width: 850px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            color: var(--text-main);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid transparent;
        }
        .faq-item.active {
            border-color: var(--accent-purple);
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.05);
        }
        .faq-item.active .faq-answer {
            padding: 18px 24px;
            max-height: 200px;
            border-top-color: var(--border-light);
        }
        .faq-icon::after {
            content: "+";
            font-size: 1.2rem;
            font-weight: bold;
            color: var(--text-muted);
        }
        .faq-item.active .faq-icon::after {
            content: "−";
        }

        /* 常见问题自助排查 & AI术语百科 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .troubleshoot-box, .encyclopedia-box {
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-light);
        }
        .list-unstyled {
            list-style: none;
        }
        .list-unstyled li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.95rem;
        }
        .list-unstyled li:last-child {
            border-bottom: none;
        }
        .list-unstyled strong {
            color: var(--accent-purple);
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .comment-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 25px;
            box-shadow: var(--glow-shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .comment-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .commenter-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .commenter-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-grad);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .commenter-name h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .commenter-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }
        .news-card {
            background: #fff;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition-smooth);
        }
        .news-card:hover {
            transform: translateY(-3px);
            border-color: var(--accent-pink);
        }
        .news-body {
            padding: 20px;
        }
        .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .news-title a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition-smooth);
        }
        .news-title a:hover {
            color: var(--accent-purple);
        }
        .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* 表单 & 加盟代理 */
        .conversion-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: flex-start;
        }
        .agent-info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 20px;
            padding: 35px;
            box-shadow: var(--glow-shadow);
        }
        .agent-benefit-list {
            margin: 20px 0 30px;
            list-style: none;
        }
        .agent-benefit-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 550;
        }
        .agent-benefit-list li::before {
            content: "✦";
            color: var(--accent-pink);
        }
        
        .form-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 20px;
            padding: 35px;
            box-shadow: var(--glow-shadow);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: var(--bg-light);
            transition: var(--transition-smooth);
            font-size: 0.95rem;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--accent-purple);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
        }
        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* 友情链接与底部区域 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: 15px;
            font-weight: 800;
        }
        .footer-links h5, .footer-contact h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 15px;
            font-weight: 700;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition-smooth);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .contact-details p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .friend-links-box {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            margin-top: 25px;
        }
        .friend-links-box h6 {
            color: #cbd5e1;
            margin-bottom: 10px;
            font-size: 0.85rem;
        }
        .friend-links-box a {
            color: #64748b;
            text-decoration: none;
            margin-right: 15px;
            display: inline-block;
            font-size: 0.85rem;
            transition: var(--transition-smooth);
        }
        .friend-links-box a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
        }
        .footer-bottom p {
            margin-bottom: 10px;
        }

        /* 悬浮工具栏 */
        .floating-service {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 99;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            border: 1px solid var(--border-light);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            position: relative;
        }
        .float-btn:hover {
            background: var(--primary-grad);
            color: #fff;
            transform: scale(1.05);
        }
        .float-btn svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }
        .qrcode-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 1px solid var(--border-light);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            display: none;
            width: 150px;
            text-align: center;
        }
        .qrcode-popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }
        .qrcode-popover span {
            font-size: 0.75rem;
            color: var(--text-main);
            display: block;
            margin-top: 8px;
            font-weight: bold;
        }
        .float-btn:hover .qrcode-popover {
            display: block;
        }

        /* 移动端响应式处理 */
        @media (max-width: 1024px) {
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .services-grid { grid-template-columns: repeat(2, 1fr); }
            .scenes-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-container { grid-template-columns: repeat(2, 1fr); }
            .training-grid { grid-template-columns: repeat(2, 1fr); }
            .comments-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .about-grid, .network-grid, .conversion-grid {
                grid-template-columns: 1fr;
            }
            .cases-grid { grid-template-columns: 1fr; }
            .comments-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: 1fr; }
            .services-grid { grid-template-columns: 1fr; }
            .scenes-grid { grid-template-columns: 1fr; }
            .steps-container { grid-template-columns: 1fr; }
            .training-grid { grid-template-columns: 1fr; }
            .troubleshoot-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            h1.hero-title {
                font-size: 2rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
        }