:root {
            --bg-color: #fafbfc;
            --text-main: #0f172a;
            --text-muted: #475569;
            --primary-neon: #00f0ff;
            --secondary-neon: #ff007f;
            --accent-green: #00ff66;
            --card-bg: #ffffff;
            --border-color: #e2e8f0;
            --container-width: 1200px;
        }

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

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

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

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

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 251, 252, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

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

        .logo-area img {
            height: 40px;
            width: auto;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, var(--secondary-neon), var(--primary-neon));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        nav a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.2s;
        }

        nav a:hover {
            color: var(--secondary-neon);
        }

        .nav-btn {
            background: linear-gradient(135deg, #00f0ff, #00ff66);
            color: #0f172a;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 240, 255, 0.4);
        }

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

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 2px;
        }

        /* 移动优先样式在底部 */

        /* 统一板块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-tag {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--secondary-neon);
            font-weight: 700;
            display: inline-block;
            margin-bottom: 10px;
            padding: 4px 12px;
            background: rgba(255, 0, 127, 0.05);
            border-radius: 20px;
            border: 1px solid rgba(255, 0, 127, 0.15);
        }

        .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: 1rem;
        }

        /* 炫彩荧光风饰件 */
        .neon-glow {
            position: relative;
        }
        .neon-glow::after {
            content: '';
            position: absolute;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            z-index: -1;
            pointer-events: none;
        }

        /* 1. Hero 首屏 - 无任何图片 */
        .hero-section {
            background: radial-gradient(circle at 90% 10%, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
                        radial-gradient(circle at 10% 90%, rgba(255, 0, 127, 0.08) 0%, transparent 60%),
                        #ffffff;
            position: relative;
            padding: 100px 0 120px;
            text-align: center;
        }

        .hero-badge {
            background: linear-gradient(90deg, rgba(255,0,127,0.1) 0%, rgba(0,240,255,0.1) 100%);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--text-main);
            padding: 6px 16px;
            border-radius: 50px;
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 25px;
        }

        .hero-h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            max-width: 900px;
            margin: 0 auto 25px;
            background: linear-gradient(135deg, #0f172a 30%, #ff007f 70%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--secondary-neon), #9400d3);
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            padding: 15px 35px;
            border-radius: 50px;
            text-decoration: none;
            border: none;
            box-shadow: 0 4px 20px rgba(255, 0, 127, 0.35);
            transition: all 0.3s;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(255, 0, 127, 0.5);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 700;
            padding: 15px 35px;
            border-radius: 50px;
            text-decoration: none;
            border: 2px solid var(--border-color);
            transition: all 0.3s;
        }

        .btn-secondary:hover {
            border-color: var(--primary-neon);
            box-shadow: 0 4px 15px rgba(0, 240, 255, 0.15);
            transform: translateY(-3px);
        }

        /* 2. 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 16px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            transition: transform 0.3s;
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--secondary-neon), var(--primary-neon));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* 3. 关于我们 */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            font-weight: 800;
        }

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

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

        .about-feat-item {
            background: #ffffff;
            border-left: 4px solid var(--primary-neon);
            padding: 15px;
            border-radius: 0 12px 12px 0;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
        }

        .about-feat-item h4 {
            font-size: 0.95rem;
            margin-bottom: 5px;
        }

        .about-feat-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 4. 全平台AIGC服务 & 5. 一站式AIGC制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 35px 25px;
            border-radius: 16px;
            position: relative;
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(255, 0, 127, 0.08);
            border-color: var(--secondary-neon);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-neon);
            font-size: 1.5rem;
            font-weight: bold;
        }

        .service-card:nth-child(even) .service-icon {
            background: rgba(255, 0, 127, 0.1);
            color: var(--secondary-neon);
        }

        .service-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        /* 支持模型标签云 */
        .model-tags-container {
            margin-top: 40px;
            padding: 20px;
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .model-tags-container h4 {
            margin-bottom: 15px;
            font-size: 1.1rem;
        }

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

        .model-tag {
            background: #f1f5f9;
            color: var(--text-muted);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            transition: all 0.2s;
        }

        .model-tag:hover {
            background: var(--primary-neon);
            color: #0f172a;
            transform: scale(1.05);
        }

        /* 6. 全行业解决方案 & 案例展示 */
        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .solutions-grid.reverse {
            direction: rtl;
        }

        .solutions-grid.reverse * {
            direction: ltr;
        }

        .solutions-image-box {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .solutions-image-box img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .solutions-image-box:hover img {
            transform: scale(1.03);
        }

        /* 7. 标准化AIGC流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 16px;
            text-align: center;
            position: relative;
        }

        .process-num {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary-neon), var(--primary-neon));
            color: #ffffff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(255,0,127,0.3);
        }

        .process-title {
            margin-top: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 8. 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .tech-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            border-top: 4px solid var(--primary-neon);
        }

        .tech-card h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

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

        /* 9. 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s;
        }

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

        .case-img-wrap {
            height: 240px;
            overflow: hidden;
            background: #f1f5f9;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .case-tag {
            font-size: 0.75rem;
            color: var(--secondary-neon);
            border: 1px solid var(--secondary-neon);
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }

        /* 10. 对比评测 */
        .compare-section {
            background: #ffffff;
        }

        .rating-box {
            background: #f8fafc;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            text-align: center;
            margin-bottom: 40px;
        }

        .rating-stars {
            font-size: 2rem;
            color: #ffb800;
            margin-bottom: 10px;
        }

        .rating-score {
            font-size: 3rem;
            font-weight: 900;
            color: var(--text-main);
        }

        .rating-score span {
            font-size: 1.2rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.9rem;
            min-width: 600px;
        }

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

        .compare-table th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--text-main);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .highlight-row {
            background: rgba(0, 240, 255, 0.03);
            font-weight: 600;
        }

        /* 11. 智能需求匹配与表单 */
        .matching-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .form-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            outline: none;
            transition: border-color 0.2s;
            font-family: inherit;
        }

        .form-control:focus {
            border-color: var(--primary-neon);
        }

        /* 12. Token 比价参考 */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
        }

        .token-card.cheap {
            border-color: var(--accent-green);
            background: rgba(0, 255, 102, 0.01);
            position: relative;
        }

        .token-card.cheap::after {
            content: "全网低价";
            position: absolute;
            top: -10px;
            right: 10px;
            background: var(--accent-green);
            color: #0f172a;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 10px;
        }

        .token-price {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary-neon);
            margin: 10px 0;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .training-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
            transition: all 0.3s;
        }

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

        .training-badge {
            font-size: 0.75rem;
            background: rgba(0, 240, 255, 0.1);
            color: #00b0c0;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 15px;
        }

        .training-card h4 {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .training-card p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 15px;
        }

        /* 15. 帮助中心, 16. FAQ & 17. 常见问题排查, 18. AI术语百科 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 15px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            transition: background-color 0.2s;
        }

        .faq-question:hover {
            background-color: #f8fafc;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 0px solid var(--border-color);
        }

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

        .faq-icon::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--text-muted);
        }

        .faq-item.active .faq-icon::after {
            content: "−";
        }

        /* 术语百科小卡片 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 15px;
            margin-top: 40px;
        }

        .glossary-card {
            background: rgba(255, 0, 127, 0.02);
            border: 1px dashed var(--border-color);
            padding: 15px;
            border-radius: 8px;
        }

        .glossary-card h5 {
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--secondary-neon);
        }

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

        /* 19. 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .news-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .news-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .news-link {
            text-decoration: none;
            color: var(--primary-neon);
            font-weight: 700;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* 20. 联系我们 & 21. 加盟代理 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-info-list {
            list-style: none;
            margin-top: 30px;
        }

        .contact-info-list li {
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .contact-icon-box {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-neon);
            font-weight: bold;
        }

        .qr-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .qr-card img {
            width: 150px;
            height: 150px;
            margin: 15px 0;
            border-radius: 8px;
            border: 1px solid #f1f5f9;
        }

        /* 用户评论 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .testimonial-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testi-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
        }

        .testi-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            background: #e2e8f0;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--text-main);
            background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
            color: #ffffff;
            font-size: 0.9rem;
        }

        .author-info h5 {
            font-size: 0.9rem;
            font-weight: 700;
        }

        .author-info p {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 友情链接区 */
        .friend-links {
            padding: 30px 0;
            background: #f8fafc;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }

        .friend-links h5 {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px 25px;
            justify-content: center;
        }

        .friend-links-list a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s;
        }

        .friend-links-list a:hover {
            color: var(--secondary-neon);
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #f8fafc;
            padding: 60px 0 30px;
        }

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

        .footer-logo-area h4 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: #ffffff;
        }

        .footer-logo-area p {
            color: #94a3b8;
            font-size: 0.9rem;
            max-width: 350px;
        }

        .footer-nav h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: #ffffff;
        }

        .footer-nav ul {
            list-style: none;
        }

        .footer-nav ul li {
            margin-bottom: 10px;
        }

        .footer-nav ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s;
        }

        .footer-nav ul li a:hover {
            color: var(--primary-neon);
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 返回顶部及悬浮工具 */
        .float-tools {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 99;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            border: 1px solid var(--border-color);
            text-decoration: none;
            color: var(--text-main);
            font-size: 0.8rem;
            font-weight: bold;
        }

        .float-btn:hover {
            transform: translateY(-3px);
            background: var(--primary-neon);
            color: #0f172a;
            border-color: var(--primary-neon);
        }

        /* 移动端响应式适配 */
        @media (max-width: 1024px) {
            .about-wrapper, .solutions-grid, .matching-wrapper, .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

            .tech-grid, .training-grid, .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

            nav.show {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero-h1 {
                font-size: 2.2rem;
            }

            .process-steps, .tech-grid, .training-grid, .testimonials-grid, .cases-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }