:root {
            --primary: #6366f1;
            --primary-light: #818cf8;
            --secondary: #06b6d4;
            --success: #10b981;
            --dark: #0f172a;
            --text: #334155;
            --text-light: #64748b;
            --bg-light: #f8fafc;
            --bg-gradient: linear-gradient(135deg, #f5f7ff 0%, #f4fbfd 100%);
            --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text);
            background-color: #ffffff;
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

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

        .section-gradient {
            background: var(--bg-gradient);
        }

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

        .section-subtitle {
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 8px;
            display: inline-block;
        }

        .section-title {
            font-size: 32px;
            color: var(--dark);
            font-weight: 800;
            position: relative;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
            color: #ffffff;
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: #ffffff;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            height: 45px;
        }

        .ai-page-logo {
            max-height: 100%;
            width: auto;
        }

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

        .nav-links a {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
        }

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

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

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

        .nav-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 首屏 Hero (无背景图) */
        .hero {
            padding: 160px 0 100px 0;
            background: linear-gradient(135deg, #f5f7ff 0%, #e8f9fd 50%, #fcf7ff 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 42px;
            color: var(--dark);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-light);
            margin-bottom: 35px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 40px;
        }

        /* 核心数据卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
            border-top: 1px solid rgba(99, 102, 241, 0.1);
            padding-top: 40px;
        }

        .stat-card {
            text-align: center;
            padding: 15px;
        }

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 5px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* 关于我们 & 介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 26px;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-p {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 20px;
            text-align: justify;
        }

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

        .feat-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .feat-icon {
            color: var(--success);
            font-weight: bold;
            font-size: 18px;
        }

        .feat-content h4 {
            font-size: 15px;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .feat-content p {
            font-size: 13px;
            color: var(--text-light);
        }

        .about-highlight {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            padding: 40px;
            border-radius: 20px;
            color: #ffffff;
            box-shadow: var(--card-shadow);
        }

        .about-highlight h4 {
            font-size: 20px;
            margin-bottom: 15px;
        }

        .about-highlight p {
            font-size: 14px;
            opacity: 0.9;
            margin-bottom: 25px;
            line-height: 1.7;
        }

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

        .service-card {
            background-color: #ffffff;
            border-radius: 16px;
            padding: 35px 25px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            box-shadow: var(--card-shadow);
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(99, 102, 241, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tags span {
            font-size: 12px;
            background-color: var(--bg-light);
            color: var(--text-light);
            padding: 3px 8px;
            border-radius: 4px;
        }

        /* 标签云 - 支持的平台 */
        .platform-cloud {
            margin-top: 50px;
            padding: 30px;
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            box-shadow: var(--card-shadow);
        }

        .platform-cloud h4 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .cloud-tag {
            font-size: 13px;
            padding: 6px 14px;
            background-color: var(--bg-light);
            border: 1px solid rgba(0,0,0,0.03);
            border-radius: 50px;
            color: var(--text);
            font-weight: 500;
            transition: var(--transition);
        }

        .cloud-tag:hover {
            background-color: var(--primary);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* 解决方案 & 网络 */
        .solutions-tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
        }

        .tab-btn {
            padding: 10px 24px;
            border-radius: 50px;
            background: var(--bg-light);
            border: 1px solid rgba(0,0,0,0.05);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .tab-btn.active, .tab-btn:hover {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

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

        .solution-card {
            background-color: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-5px);
        }

        .solution-body {
            padding: 25px;
        }

        .solution-body h4 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .solution-body p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .solution-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .solution-list li {
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-list li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: bold;
        }

        /* 流程步骤与技术标准 */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            margin-top: 30px;
        }

        .step-card {
            background-color: #ffffff;
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            box-shadow: var(--card-shadow);
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px auto;
        }

        .step-card h4 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

        /* 价格参考 / Token 比价 */
        .price-table-wrap {
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: var(--card-shadow);
            overflow-x: auto;
            margin-top: 30px;
        }

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

        .price-table th, .price-table td {
            padding: 16px 24px;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .price-table th {
            background-color: var(--bg-light);
            color: var(--dark);
            font-weight: 700;
            font-size: 14px;
        }

        .price-table td {
            font-size: 14px;
        }

        .price-badge {
            display: inline-block;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        .badge-green {
            background-color: rgba(16, 185, 129, 0.1);
            color: var(--success);
        }

        .badge-blue {
            background-color: rgba(99, 102, 241, 0.1);
            color: var(--primary);
        }

        /* 对比评测 */
        .rating-box {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            background: #ffffff;
            border-radius: 20px;
            border: 1px solid rgba(0,0,0,0.05);
            padding: 40px;
            box-shadow: var(--card-shadow);
            align-items: center;
        }

        .score-card {
            text-align: center;
            border-right: 1px solid rgba(0,0,0,0.08);
            padding-right: 40px;
        }

        .score-num {
            font-size: 64px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-max {
            font-size: 16px;
            color: var(--text-light);
        }

        .stars {
            color: #fbbf24;
            font-size: 24px;
            margin: 15px 0;
        }

        .score-label {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
        }

        .rating-bars {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .bar-item {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .bar-label {
            width: 140px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .bar-track {
            flex-grow: 1;
            height: 8px;
            background-color: var(--bg-light);
            border-radius: 4px;
            overflow: hidden;
        }

        .bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
        }

        .bar-val {
            width: 40px;
            text-align: right;
            font-size: 13px;
            font-weight: bold;
            color: var(--dark);
        }

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

        .case-card {
            background-color: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: var(--card-shadow);
        }

        .case-img-wrap {
            width: 100%;
            height: 200px;
            background-color: #f1f5f9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 24px;
        }

        .case-body h4 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 8px;
        }

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

        /* 职业技术培训 */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .train-card {
            background: #ffffff;
            border: 1px solid rgba(0,0,0,0.05);
            border-radius: 12px;
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .train-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
        }

        .train-card h4 {
            font-size: 15px;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .train-card p {
            font-size: 12px;
            color: var(--text-light);
        }

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

        .comment-card {
            background-color: #ffffff;
            border-radius: 16px;
            padding: 30px;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: var(--card-shadow);
            position: relative;
        }

        .comment-quote {
            font-size: 14px;
            color: var(--text);
            margin-bottom: 24px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
            font-size: 16px;
        }

        .user-info h5 {
            font-size: 14px;
            color: var(--dark);
        }

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

        /* 智能需求匹配与加盟表单 */
        .form-section-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-wrap {
            background-color: #ffffff;
            border-radius: 20px;
            padding: 40px;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: var(--card-shadow);
        }

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

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

        .form-group-full {
            grid-column: span 2;
        }

        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
        }

        .form-control {
            padding: 12px 16px;
            border: 1px solid rgba(0,0,0,0.1);
            border-radius: 8px;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
        }

        .contact-info-card {
            background: linear-gradient(135deg, var(--dark) 0%, #1e293b 100%);
            color: #ffffff;
            border-radius: 20px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-card h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }

        .contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 40px;
        }

        .contact-item-title {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--primary-light);
        }

        .contact-item-val {
            font-size: 15px;
            font-weight: 500;
        }

        .qr-area {
            display: flex;
            align-items: center;
            gap: 15px;
            background: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: 12px;
        }

        .qr-area img {
            width: 80px;
            height: 80px;
            border-radius: 6px;
            background: #ffffff;
            padding: 4px;
        }

        .qr-text h5 {
            font-size: 14px;
            margin-bottom: 4px;
        }

        .qr-text p {
            font-size: 12px;
            opacity: 0.7;
        }

        /* FAQ折叠面板 */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid rgba(0,0,0,0.05);
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .faq-header {
            padding: 20px 24px;
            background: #ffffff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-header h4 {
            font-size: 15px;
            color: var(--dark);
            font-weight: 600;
        }

        .faq-icon {
            font-size: 18px;
            transition: var(--transition);
            color: var(--primary);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--bg-light);
        }

        .faq-content {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-light);
            border-top: 1px solid rgba(0,0,0,0.02);
            line-height: 1.7;
        }

        .faq-item.active .faq-body {
            max-height: 200px;
        }

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

        /* 资讯百科 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: var(--card-shadow);
        }

        .news-body {
            padding: 24px;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .news-body h4 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-body p {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .news-link {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            color: var(--secondary);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 50px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 18px;
            margin-bottom: 15px;
        }

        .footer-brand p {
            font-size: 13px;
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .footer-links h4, .footer-contact h4 {
            color: #ffffff;
            font-size: 15px;
            margin-bottom: 20px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: rgba(255,255,255,0.7);
            font-size: 13px;
        }

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

        .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 12px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            color: rgba(255,255,255,0.5);
        }

        .friend-links a {
            color: rgba(255,255,255,0.5);
        }

        .friend-links a:hover {
            color: #ffffff;
        }

        /* 浮动组件 */
        .floating-widget {
            position: fixed;
            right: 24px;
            bottom: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .widget-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #ffffff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
        }

        .widget-btn:hover {
            background-color: var(--primary);
            color: #ffffff;
        }

        .widget-btn svg {
            width: 22px;
            height: 22px;
            fill: currentColor;
        }

        .widget-qr-box {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #ffffff;
            border: 1px solid rgba(0,0,0,0.08);
            border-radius: 12px;
            padding: 15px;
            box-shadow: var(--card-shadow);
            display: none;
            text-align: center;
            width: 140px;
        }

        .widget-qr-box img {
            width: 110px;
            height: 110px;
            margin-bottom: 8px;
        }

        .widget-qr-box p {
            font-size: 11px;
            color: var(--text);
            margin: 0;
        }

        .widget-btn:hover .widget-qr-box {
            display: block;
        }

        #back-to-top {
            opacity: 0;
            visibility: hidden;
        }

        #back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .solutions-grid, .cases-grid, .comments-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .train-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .hero {
                padding: 120px 0 60px 0;
            }
            .hero-title {
                font-size: 30px;
            }
            .about-grid, .form-section-grid, .rating-box {
                grid-template-columns: 1fr;
            }
            .score-card {
                border-right: none;
                border-bottom: 1px solid rgba(0,0,0,0.08);
                padding-right: 0;
                padding-bottom: 30px;
            }
            .services-grid, .solutions-grid, .cases-grid, .comments-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr;
            }
            .train-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-top: 1px solid rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
        }