:root {
            --primary-color: #E60012;
            --primary-hover: #C80010;
            --secondary-color: #FF5A60;
            --text-main: #2C2C2C;
            --text-muted: #666666;
            --bg-light: #FBFBFB;
            --bg-white: #FFFFFF;
            --bg-accent: #FFF5F5;
            --border-color: #EAEAEA;
            --max-width: 1200px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            background-color: var(--bg-white);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        .logo-box {
            display: flex;
            align-items: center;
            height: 40px;
        }

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

        .nav-links a {
            color: var(--text-main);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }

        .nav-links a:hover {
            color: var(--primary-color);
            background-color: var(--bg-accent);
        }

        .nav-btn {
            background-color: var(--primary-color);
            color: white !important;
            padding: 10px 20px !important;
            border-radius: 50px !important;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(230, 0, 18, 0.2);
        }

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

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

        .menu-toggle span {
            width: 25px;
            height: 30px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 3px;
            transition: 0.3s;
        }

        /* 艳红热烈 Hero 首屏 - 纯色/渐变布局，无背景图片 */
        .hero-section {
            background: linear-gradient(135deg, #E60012 0%, #FF2E3B 50%, #FF5A60 100%);
            color: var(--bg-white);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50%;
            height: 100%;
            background: rgba(255, 255, 255, 0.05);
            transform: skewX(-15deg);
            pointer-events: none;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: 1px;
            color: #FFFFFF;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            margin-bottom: 35px;
            opacity: 0.95;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            color: #FFF0F0;
        }

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

        .btn-primary {
            background-color: var(--bg-white);
            color: var(--primary-color);
            padding: 15px 35px;
            font-size: 16px;
            font-weight: bold;
            border-radius: 50px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 25px rgba(0,0,0,0.25);
            color: var(--primary-hover);
        }

        .btn-outline {
            border: 2px solid var(--bg-white);
            color: var(--bg-white);
            padding: 13px 33px;
            font-size: 16px;
            font-weight: bold;
            border-radius: 50px;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 20px;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            opacity: 0.85;
            color: #FFF0F0;
        }

        /* 主体板块公用样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-light {
            background-color: var(--bg-white);
        }

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

        .section-tag {
            color: var(--primary-color);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: inline-block;
            background: var(--bg-accent);
            padding: 4px 12px;
            border-radius: 40px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 15px;
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            font-size: 15px;
        }

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

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

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 15px;
            line-height: 1.8;
        }

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

        .about-feature-item {
            background-color: var(--bg-light);
            padding: 15px;
            border-left: 4px solid var(--primary-color);
            border-radius: 0 8px 8px 0;
        }

        .about-feature-item h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .about-feature-item p {
            font-size: 13px;
            margin-bottom: 0;
            line-height: 1.4;
        }

        .about-info-box {
            background-color: var(--bg-accent);
            border: 2px dashed var(--primary-color);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
        }

        .about-info-box h3 {
            font-size: 24px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .brand-name {
            font-size: 32px;
            font-weight: 800;
            display: block;
            margin-bottom: 15px;
        }

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

        .service-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: var(--primary-color);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            border-color: transparent;
        }

        .service-card:hover::after {
            transform: scaleX(1);
        }

        .service-icon {
            font-size: 2rem;
            color: var(--primary-color);
            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: 14px;
            margin-bottom: 15px;
            min-height: 66px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 15px;
        }

        .model-tag {
            font-size: 11px;
            background-color: var(--bg-light);
            color: var(--text-muted);
            padding: 3px 8px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* 流程步骤与时间线 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            position: relative;
        }

        .process-step {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 20px auto;
            box-shadow: 0 4px 10px rgba(230,0,18,0.3);
        }

        .process-step h3 {
            font-size: 16px;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .process-step p {
            color: var(--text-muted);
            font-size: 13px;
        }

        /* 解决方案与网络 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .network-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .network-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary-color);
            border-radius: 50%;
        }

        .network-text h4 {
            font-size: 14px;
            font-weight: 700;
        }

        .network-text p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #eee;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.08);
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            font-size: 11px;
            color: var(--primary-color);
            background-color: var(--bg-accent);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 16px;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 13px;
        }

        /* 对比评测表格与比价 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 30px;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        .eval-table th, .eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .eval-table th {
            background-color: var(--bg-accent);
            font-weight: 700;
            color: var(--text-main);
        }

        .eval-table tbody tr:hover {
            background-color: rgba(230,0,18,0.02);
        }

        .badge-pro {
            background-color: var(--primary-color);
            color: white;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: bold;
        }

        .score-box {
            background: linear-gradient(135deg, #FFF5F5 0%, #FFE0E0 100%);
            border: 1px solid rgba(230,0,18,0.15);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .score-stars {
            color: #FFB300;
            font-size: 1.5rem;
            margin-bottom: 5px;
        }

        /* 人工智能培训 & 技术标准 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            gap: 20px;
            transition: all 0.3s ease;
        }

        .training-card:hover {
            box-shadow: 0 8px 25px rgba(0,0,0,0.05);
            border-color: rgba(230,0,18,0.2);
        }

        .training-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            line-height: 1;
        }

        .training-info h3 {
            font-size: 18px;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .training-info p {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 15px;
        }

        .training-badge {
            display: inline-block;
            font-size: 11px;
            color: var(--primary-color);
            background-color: var(--bg-accent);
            border: 1px solid rgba(230,0,18,0.2);
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* 常见用户问题 FAQ */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-header {
            padding: 20px;
            background-color: var(--bg-white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 15px;
        }

        .faq-header::after {
            content: '+';
            font-size: 20px;
            color: var(--primary-color);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-header::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 0 solid var(--border-color);
        }

        .faq-item.active .faq-content {
            padding: 20px;
            max-height: 300px;
            border-top: 1px solid var(--border-color);
        }

        /* 自助排查与术语百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-block h3 {
            font-size: 18px;
            margin-bottom: 20px;
            padding-left: 10px;
            border-left: 4px solid var(--primary-color);
            font-weight: 700;
        }

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

        .wiki-item {
            background-color: var(--bg-white);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .wiki-item h4 {
            font-size: 14px;
            color: var(--primary-color);
            margin-bottom: 5px;
            font-weight: 700;
        }

        .wiki-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

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

        .comment-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            color: var(--text-muted);
            font-size: 14px;
            font-style: italic;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .user-avatar-placeholder {
            width: 40px;
            height: 40px;
            background-color: var(--bg-accent);
            color: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .user-info h4 {
            font-size: 14px;
            font-weight: 700;
        }

        .user-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 知识库/行业资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            transition: all 0.3s ease;
        }

        .article-item:hover {
            border-color: var(--primary-color);
            transform: translateX(5px);
        }

        .article-info h4 {
            font-size: 16px;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .article-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-link-btn {
            background-color: var(--bg-accent);
            color: var(--primary-color);
            padding: 8px 16px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
        }

        .sidebar-widget {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
            height: fit-content;
        }

        .widget-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
            border-left: 3px solid var(--primary-color);
            padding-left: 8px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud span {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 5px 10px;
            font-size: 12px;
            border-radius: 4px;
            color: var(--text-muted);
        }

        /* 需求表单与联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-panel {
            background: linear-gradient(135deg, #FFF5F5 0%, #FFEBEB 100%);
            border: 1px solid rgba(230,0,18,0.1);
            padding: 40px;
            border-radius: 12px;
        }

        .contact-info-panel h3 {
            font-size: 20px;
            color: var(--primary-color);
            margin-bottom: 25px;
            font-weight: 700;
        }

        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            list-style: none;
            margin-bottom: 30px;
        }

        .contact-list li {
            display: flex;
            gap: 15px;
            font-size: 14px;
        }

        .contact-list strong {
            color: var(--text-main);
            width: 80px;
            flex-shrink: 0;
        }

        .contact-qrcode {
            display: flex;
            align-items: center;
            gap: 20px;
            background-color: var(--bg-white);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid rgba(230,0,18,0.1);
            max-width: 320px;
        }

        .contact-qrcode img {
            width: 80px;
            height: 80px;
            border: 1px solid var(--border-color);
        }

        .qrcode-text h4 {
            font-size: 14px;
            font-weight: 700;
        }

        .qrcode-text p {
            font-size: 12px;
            color: var(--text-muted);
        }

        .contact-form-panel {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

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

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            color: var(--text-main);
            background-color: var(--bg-light);
            outline: none;
            transition: all 0.3s ease;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary-color);
            background-color: var(--bg-white);
            box-shadow: 0 0 0 3px rgba(230,0,18,0.1);
        }

        .form-textarea {
            height: 100px;
            resize: none;
        }

        .btn-submit {
            width: 100%;
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 14px;
            font-size: 15px;
            font-weight: 700;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(230,0,18,0.2);
        }

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

        /* 友情链接与页脚 */
        footer {
            background-color: #1A1A1A;
            color: #E0E0E0;
            padding: 60px 0 20px 0;
            font-size: 13px;
            border-top: 5px solid var(--primary-color);
        }

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

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

        .footer-desc {
            color: #999999;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .footer-title {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
            border-left: 3px solid var(--primary-color);
            padding-left: 8px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #999999;
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .friend-links-box {
            grid-column: 1 / -1;
            border-top: 1px solid #2A2A2A;
            padding-top: 25px;
            margin-top: 20px;
        }

        .friend-links-box h4 {
            color: #FFFFFF;
            font-size: 13px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: #888888;
            font-size: 12px;
        }

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

        .footer-bottom {
            border-top: 1px solid #2A2A2A;
            padding-top: 20px;
            text-align: center;
            color: #666666;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 侧边浮动组件 */
        .float-toolbar {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            position: relative;
        }

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

        .float-btn:hover svg {
            fill: #FFFFFF;
        }

        .float-btn svg {
            width: 22px;
            height: 22px;
            fill: var(--text-main);
            transition: fill 0.3s ease;
        }

        .qr-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 150px;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 8px;
        }

        .qr-popover span {
            font-size: 11px;
            color: var(--text-main);
            font-weight: 700;
        }

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

        /* 响应式媒体查询 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .network-grid, .wiki-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .case-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .process-flow {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                border-top: 1px solid var(--border-color);
                box-shadow: 0 5px 15px rgba(0,0,0,0.05);
                padding: 20px;
                gap: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            .hero-title {
                font-size: 2rem;
            }
            .services-grid, .case-grid, .comments-grid, .process-flow {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }