:root {
            --primary-gradient: linear-gradient(135deg, #2563eb, #7c3aed, #db2777);
            --primary-color: #6366f1;
            --text-color: #1e293b;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --accent-color: #f43f5e;
            --border-color: #e2e8f0;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--text-color);
            background-color: var(--bg-light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        ul {
            list-style: none;
        }

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

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: #0f172a;
            position: relative;
        }

        .section-title span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 50px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

        header.scrolled {
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
        }

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

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

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

        .brand-name {
            font-size: 1.3rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 24px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-color);
        }

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

        .nav-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-nav-primary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 8px 18px;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-nav-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-color);
            cursor: pointer;
        }

        /* Hero首屏 - 无图片设计，纯渐变与几何流动风 */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, rgba(219, 39, 119, 0.03) 90.1%), var(--bg-white);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 400px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

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

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary-color);
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 24px;
        }

        .hero-title span {
            background: var(--primary-gradient);
            -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-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }

        .btn-main {
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }

        .btn-main-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
        }

        .btn-main-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
        }

        .btn-main-secondary {
            background: var(--bg-white);
            color: var(--text-color);
            border: 1px solid var(--border-color);
        }

        .btn-main-secondary:hover {
            transform: translateY(-3px);
            background: var(--bg-light);
            border-color: var(--text-muted);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .stat-num {
            font-size: 2.25rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-color);
        }

        .stat-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* 关于我们与平台介绍 */
        .about-section {
            background: var(--bg-white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: #0f172a;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

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

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

        .about-feat-icon {
            color: var(--primary-color);
            font-weight: bold;
        }

        .about-feat-text h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .about-feat-text p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        .about-media {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }

        .about-media img {
            width: 100%;
            display: block;
        }

        /* 全平台AIGC服务 & 支持模型 */
        .services-section {
            background: var(--bg-light);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 50px;
        }

        .service-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08);
            border-color: transparent;
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(99, 102, 241, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 24px;
            color: var(--primary-color);
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: #0f172a;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* 模型聚合标签云 */
        .models-box {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            text-align: center;
        }

        .models-box h4 {
            font-size: 1.2rem;
            margin-bottom: 24px;
            font-weight: 700;
        }

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

        .model-tag {
            padding: 8px 16px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-color);
            transition: var(--transition);
        }

        .model-tag:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作场景 */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .scene-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .scene-card:hover {
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
            border-color: var(--primary-color);
        }

        .scene-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scene-title i {
            color: var(--accent-color);
        }

        .scene-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .solution-card {
            background: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 30px;
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .case-card {
            background: var(--bg-white);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
        }

        .case-image-wrapper {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #f1f5f9;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-image-wrapper img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 0.75rem;
            text-transform: uppercase;
            font-weight: 700;
            color: var(--accent-color);
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-info h4 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: #0f172a;
        }

        .case-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 流程与标准 */
        .flow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            background: var(--bg-white);
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 16px auto;
        }

        /* 对比评测 */
        .evaluation-section {
            background: var(--bg-white);
        }

        .eval-summary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 40px;
            border-radius: 20px;
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
        }

        .eval-rating h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        .rating-stars {
            font-size: 2rem;
            color: #f59e0b;
        }

        .rating-score {
            font-size: 4rem;
            font-weight: 900;
            line-height: 1;
        }

        .rating-score span {
            font-size: 1.5rem;
            font-weight: 500;
        }

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

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

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

        .eval-table th {
            background: var(--bg-light);
            font-weight: 700;
        }

        .eval-table tr:hover {
            background: rgba(99, 102, 241, 0.02);
        }

        /* 价格参考 */
        .price-section {
            background: var(--bg-light);
        }

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

        .price-card {
            background: var(--bg-white);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            padding: 40px;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .price-card.popular {
            border-color: var(--primary-color);
            box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.1);
        }

        .popular-badge {
            position: absolute;
            top: 20px;
            right: -30px;
            background: var(--accent-color);
            color: #fff;
            padding: 4px 30px;
            transform: rotate(45deg);
            font-size: 0.75rem;
            font-weight: 700;
        }

        .price-header h3 {
            font-size: 1.3rem;
            margin-bottom: 8px;
        }

        .price-amount {
            font-size: 2.5rem;
            font-weight: 800;
            margin: 20px 0;
            color: #0f172a;
        }

        .price-amount span {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 400;
        }

        .price-features {
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .price-features li {
            padding: 8px 0;
            font-size: 0.9rem;
            border-bottom: 1px dashed var(--border-color);
        }

        .btn-price {
            width: 100%;
            text-align: center;
            padding: 12px;
            border-radius: 8px;
            font-weight: 700;
            transition: var(--transition);
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .training-list {
            margin-top: 24px;
        }

        .training-item {
            background: var(--bg-white);
            padding: 16px 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

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

        .training-item h4 {
            font-size: 1rem;
            font-weight: 700;
        }

        .training-item span {
            font-size: 0.8rem;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary-color);
            padding: 4px 10px;
            border-radius: 4px;
        }

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

        .review-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition);
        }

        .review-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 25px -5px rgba(0,0,0,0.05);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .avatar-placeholder {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .review-meta h4 {
            font-size: 0.95rem;
            font-weight: 700;
        }

        .review-meta p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--text-color);
            line-height: 1.7;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-header::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-content {
            padding: 0 24px 20px 24px;
        }

        /* 术语百科与自助排查 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .help-card {
            background: var(--bg-white);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 30px;
        }

        .help-card h3 {
            font-size: 1.25rem;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 10px;
        }

        .help-list li {
            margin-bottom: 16px;
        }

        .help-list h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .help-list p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 行业资讯最新文章 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary-color);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .news-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-color);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 联系与表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-box {
            background: var(--bg-white);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            padding: 40px;
        }

        .contact-details {
            margin-top: 30px;
        }

        .contact-detail-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 24px;
        }

        .contact-detail-item h5 {
            font-weight: 700;
            margin-bottom: 4px;
        }

        .contact-detail-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .contact-qrcode {
            margin-top: 30px;
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .contact-qrcode img {
            width: 120px;
            height: 120px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }

        .contact-qrcode-text {
            font-size: 0.9rem;
        }

        .contact-form-box {
            background: var(--bg-white);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            padding: 40px;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
        }

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

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .btn-submit {
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 8px;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
        }

        /* 底部与友情链接 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

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

        .friend-links {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
        }

        .friend-links-title {
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .friend-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friend-links-container a {
            font-size: 0.85rem;
            color: #64748b;
        }

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

        .copyright-area {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            text-align: center;
            font-size: 0.8rem;
        }

        /* 侧边浮动客服 */
        .floating-contact {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-white);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .float-btn:hover {
            transform: scale(1.1);
            background: var(--primary-gradient);
            color: #fff;
        }

        .float-qr-box {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 12px;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            display: none;
            flex-direction: column;
            align-items: center;
            width: 160px;
        }

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

        .float-qr-box span {
            font-size: 0.75rem;
            color: var(--text-color);
            font-weight: 700;
        }

        .float-btn:hover .float-qr-box {
            display: flex;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .solutions-grid, .price-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .about-grid, .training-grid, .contact-grid, .help-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid, .services-grid, .solutions-grid, .price-grid, .reviews-grid, .news-grid, .cases-grid {
                grid-template-columns: 1fr;
            }
            .flow-timeline {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .eval-summary {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-main {
                width: 100%;
            }
        }