/* 艳色潮流风 CSS 变量 */
        :root {
            --bg-primary: #FAF8FF;
            --bg-secondary: #F3EEFC;
            --text-main: #121214;
            --text-muted: #5E5D66;
            --color-pink: #FF0055;
            --color-purple: #7A00FF;
            --color-cyan: #00E5FF;
            --gradient-trend: linear-gradient(135deg, #FF0055 0%, #7A00FF 50%, #00E5FF 100%);
            --gradient-soft: linear-gradient(135deg, rgba(255,0,85,0.05) 0%, rgba(122,0,255,0.05) 100%);
            --shadow-sm: 0 4px 12px rgba(122, 0, 255, 0.05);
            --shadow-md: 0 8px 24px rgba(122, 0, 255, 0.1);
            --shadow-lg: 0 16px 40px rgba(122, 0, 255, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --max-width: 1200px;
            --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;
            background-color: var(--bg-primary);
            color: var(--text-main);
            overflow-x: hidden;
        }
        body {
            line-height: 1.6;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        /* 全局容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            padding: 100px 0;
            position: relative;
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--gradient-trend);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(250, 248, 255, 0.85);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(122, 0, 255, 0.1);
            transition: var(--transition);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            height: 40px;
            width: auto;
        }
        .logo-text {
            font-weight: 800;
            font-size: 1.3rem;
            background: var(--gradient-trend);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            list-style: none;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
        }
        .nav-link:hover {
            color: var(--color-pink);
            background: rgba(255, 0, 85, 0.05);
        }
        .nav-btn {
            background: var(--gradient-trend);
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }
        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* 首屏 Hero - 无图片设计，纯流光科技感 */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.1) 0%, rgba(250, 248, 255, 0) 50%),
                        radial-gradient(circle at 10% 80%, rgba(255, 0, 85, 0.08) 0%, rgba(250, 248, 255, 0) 50%),
                        var(--bg-primary);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(rgba(122, 0, 255, 0.03) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(122, 0, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -1px;
            color: var(--text-main);
        }
        .hero h1 span {
            background: var(--gradient-trend);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: var(--gradient-trend);
            color: #fff;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 30px rgba(122,0,255,0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(122,0,255,0.4);
        }
        .btn-secondary {
            background: #fff;
            color: var(--text-main);
            border: 2px solid rgba(122, 0, 255, 0.2);
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .btn-secondary:hover {
            border-color: var(--color-purple);
            background: rgba(122, 0, 255, 0.05);
            transform: translateY(-3px);
        }
        .hero-badges {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }
        .hero-badge {
            background: rgba(122, 0, 255, 0.06);
            border: 1px solid rgba(122, 0, 255, 0.1);
            color: var(--color-purple);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 60px;
            position: relative;
            z-index: 2;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(122, 0, 255, 0.1);
            padding: 30px 20px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-pink);
        }
        .stat-num {
            font-size: 2.5rem;
            font-weight: 900;
            background: var(--gradient-trend);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* 关于我们 */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            font-weight: 800;
        }
        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }
        .features-list {
            margin-top: 30px;
        }
        .feature-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
        }
        .feature-icon {
            width: 24px;
            height: 24px;
            background: var(--gradient-trend);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.8rem;
            font-weight: bold;
        }
        .about-visual {
            background: var(--gradient-soft);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 2px dashed rgba(122, 0, 255, 0.2);
            text-align: center;
        }
        .about-visual h4 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--color-purple);
        }

        /* 全平台AIGC服务 & 聚合模型列表 */
        .models-marquee {
            overflow: hidden;
            white-space: nowrap;
            padding: 20px 0;
            background: rgba(122, 0, 255, 0.03);
            border-top: 1px solid rgba(122, 0, 255, 0.08);
            border-bottom: 1px solid rgba(122, 0, 255, 0.08);
            margin-bottom: 50px;
        }
        .marquee-content {
            display: inline-block;
            animation: marquee 30s linear infinite;
        }
        .marquee-item {
            display: inline-block;
            padding: 8px 24px;
            margin: 0 10px;
            background: #fff;
            border: 1px solid rgba(122, 0, 255, 0.1);
            border-radius: 50px;
            font-weight: bold;
            color: var(--color-purple);
            box-shadow: var(--shadow-sm);
        }
        @keyframes marquee {
            0% { transform: translate3d(0, 0, 0); }
            100% { transform: translate3d(-50%, 0, 0); }
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-card {
            background: #fff;
            border: 1px solid rgba(122, 0, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 40px 30px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-pink);
        }
        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            font-weight: 700;
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 全行业解决方案 & 服务网络 */
        .solutions-section {
            background: var(--bg-secondary);
        }
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .solution-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .solution-card:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-md);
        }
        .network-bar {
            margin-top: 60px;
            background: var(--gradient-trend);
            padding: 30px;
            border-radius: var(--radius-md);
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .network-text h4 {
            font-size: 1.3rem;
            font-weight: 800;
        }

        /* 流程步骤 & 技术标准 */
        .steps-container {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-bottom: 60px;
            flex-wrap: wrap;
            gap: 30px;
        }
        .step-item {
            flex: 1;
            min-width: 200px;
            background: #fff;
            border: 1px solid rgba(122, 0, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 30px 20px;
            text-align: center;
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-num {
            width: 40px;
            height: 40px;
            background: var(--gradient-trend);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            margin: 0 auto 20px auto;
        }
        .tech-standards {
            background: rgba(0, 229, 255, 0.05);
            border: 1px solid var(--color-cyan);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
        }
        .standard-item {
            text-align: center;
        }
        .standard-title {
            font-weight: 800;
            color: var(--color-purple);
        }

        /* 客户案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .case-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(122, 0, 255, 0.05);
        }
        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: var(--bg-secondary);
        }
        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-card:hover .case-img-container img {
            transform: scale(1.1);
        }
        .case-info {
            padding: 24px;
        }
        .case-tag {
            display: inline-block;
            background: rgba(255, 0, 85, 0.08);
            color: var(--color-pink);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
            font-weight: bold;
        }
        .case-info h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        /* 对比评测 & Token比价参考 */
        .compare-section {
            background: var(--bg-secondary);
        }
        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
        }
        .rating-box {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 40px;
            text-align: center;
            border: 2px solid var(--color-purple);
            box-shadow: var(--shadow-md);
        }
        .rating-title {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
        .rating-stars {
            color: #FFB800;
            font-size: 2.2rem;
            margin-bottom: 15px;
        }
        .rating-score {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--color-pink);
            line-height: 1;
            margin-bottom: 10px;
        }
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }
        .compare-table th, .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid rgba(122, 0, 255, 0.08);
        }
        .compare-table th {
            background: rgba(122, 0, 255, 0.05);
            color: var(--color-purple);
            font-weight: 800;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-highlight {
            background: rgba(255, 0, 85, 0.02);
            font-weight: bold;
            color: var(--color-pink);
        }

        /* 职业技术培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .training-card {
            background: #fff;
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .training-card:hover {
            border-color: var(--color-cyan);
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .training-cert {
            font-size: 0.8rem;
            color: var(--color-purple);
            background: rgba(122, 0, 255, 0.05);
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 15px;
            font-weight: 700;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }
        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border-top: 4px solid var(--color-purple);
        }
        .review-content {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .author-avatar {
            width: 40px;
            height: 40px;
            background: var(--gradient-trend);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: bold;
        }
        .author-info h5 {
            font-size: 0.95rem;
            font-weight: bold;
        }
        .author-info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 帮助中心 & FAQ 折叠面板 & 术语百科 */
        .faq-百科-wrapper {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid rgba(122, 0, 255, 0.1);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-header {
            padding: 20px;
            background: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: bold;
            user-select: none;
        }
        .faq-header::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--color-purple);
            transition: var(--transition);
        }
        .faq-item.active .faq-header::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            border-top: 1px solid transparent;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-content {
            padding: 20px;
            max-height: 500px;
            border-top: 1px solid rgba(122, 0, 255, 0.05);
        }
        .encyclopedia-box {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 30px;
            border: 1px solid rgba(122, 0, 255, 0.1);
            height: fit-content;
        }
        .encyclopedia-title {
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--color-purple);
        }
        .term-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .term-item dt {
            font-weight: bold;
            color: var(--color-pink);
            font-size: 0.95rem;
        }
        .term-item dd {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-left: 0;
            margin-top: 4px;
        }

        /* 行业资讯 / 知识库 */
        .news-section {
            background: var(--bg-secondary);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-left: 4px solid var(--color-pink);
        }
        .news-card h4 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            line-height: 1.5;
        }
        .news-link {
            font-size: 0.9rem;
            color: var(--color-purple);
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 5px;
            margin-top: 15px;
        }

        /* 智能需求匹配 (表单) & 联系我们 & 加盟代理 */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }
        .form-box {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(122, 0, 255, 0.1);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            font-size: 0.9rem;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid rgba(122, 0, 255, 0.2);
            border-radius: var(--radius-sm);
            font-family: inherit;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--color-purple);
            box-shadow: 0 0 0 3px rgba(122, 0, 255, 0.15);
        }
        .form-submit-btn {
            width: 100%;
            background: var(--gradient-trend);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .form-submit-btn:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }
        .contact-info-box {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .info-card {
            background: rgba(122, 0, 255, 0.03);
            border: 1px solid rgba(122, 0, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .info-card h4 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--color-purple);
        }
        .qrcode-container {
            display: flex;
            gap: 20px;
            align-items: center;
            margin-top: 15px;
        }
        .qrcode-container img {
            width: 120px;
            height: 120px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(122,0,255,0.1);
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }
        .cloud-tag {
            background: #fff;
            border: 1px solid rgba(122, 0, 255, 0.1);
            color: var(--text-muted);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
        }

        /* 页脚 */
        footer {
            background: #121214;
            color: #A09EAE;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            border-top: 4px solid var(--color-pink);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        .footer-links h4 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 1rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--color-pink);
        }
        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 10px;
        }
        .friendship-links a {
            color: #A09EAE;
            background: rgba(255, 255, 255, 0.05);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
        }
        .friendship-links a:hover {
            color: #fff;
            background: var(--color-purple);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 侧边浮动客服 */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }
        .float-item {
            width: 50px;
            height: 50px;
            background: #fff;
            border-radius: 50%;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            transition: var(--transition);
            border: 1px solid rgba(122, 0, 255, 0.1);
        }
        .float-item:hover {
            background: var(--gradient-trend);
            color: #fff;
            transform: scale(1.08);
        }
        .float-qrcode {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 15px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 160px;
            border: 1px solid rgba(122,0,255,0.1);
        }
        .float-qrcode img {
            width: 130px;
            height: 130px;
        }
        .float-qrcode span {
            color: var(--text-main);
            font-size: 0.75rem;
            display: block;
            margin-top: 8px;
            font-weight: bold;
        }
        .float-item:hover .float-qrcode {
            display: block;
        }
        .back-top {
            display: none;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-wrapper {
                grid-template-columns: 1fr;
            }
            .faq-百科-wrapper {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #FAF8FF;
                flex-direction: column;
                padding: 20px;
                gap: 15px;
                border-bottom: 1px solid rgba(122, 0, 255, 0.1);
                display: none;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .about-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .cases-grid, .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .contact-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: 1fr;
            }
        }