/* 变量及全局重置 */
        :root {
            --primary: #8b5cf6;
            --primary-bright: #a78bfa;
            --secondary: #ff007f;
            --secondary-dark: #db006f;
            --accent: #3b82f6;
            --text-dark: #0f172a;
            --text-muted: #4b5563;
            --bg-light: #f8fafc;
            --bg-pure: #ffffff;
            --grad-colorful: linear-gradient(135deg, #ff007f 0%, #8b5cf6 50%, #3b82f6 100%);
            --grad-soft: linear-gradient(120deg, #fdfbf7 0%, #eef2ff 100%);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        /* 统一容器规范 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

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

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--text-dark);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--grad-colorful);
            border-radius: 2px;
        }

        .section-title p {
            color: var(--text-muted);
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            z-index: 1000;
            transition: var(--transition);
        }

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

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

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

        .brand-name {
            font-size: 1.4rem;
            font-weight: 800;
            background: var(--grad-colorful);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(139, 92, 246, 0.05);
        }

        .nav-btn {
            background: var(--grad-colorful);
            color: #fff;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(255, 0, 127, 0.2);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 0, 127, 0.35);
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero首屏 - 艳彩无图科技风 */
        .hero-section {
            background: var(--grad-soft);
            padding: 120px 0;
            text-align: center;
            overflow: hidden;
        }

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

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 0, 127, 0.1);
            color: var(--secondary);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 0, 127, 0.2);
            animation: pulse 2s infinite;
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 25px;
        }

        .hero-title span {
            background: var(--grad-colorful);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }

        .btn-primary {
            background: var(--grad-colorful);
            color: #fff;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 10px 25px rgba(255, 0, 127, 0.25);
        }

        .btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 12px 30px rgba(255, 0, 127, 0.35);
        }

        .btn-secondary {
            background: #fff;
            color: var(--text-dark);
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            border: 2px solid rgba(139, 92, 246, 0.3);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(139, 92, 246, 0.05);
            transform: translateY(-2px);
        }

        /* 核心卖点与数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.8);
            border-radius: 16px;
            padding: 25px 20px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.03);
            border: 1px solid rgba(139, 92, 246, 0.1);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 12px 35px rgba(139, 92, 246, 0.15);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--grad-colorful);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

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

        .stat-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 5px;
        }

        /* 关于我们 */
        .about-section {
            background: var(--bg-pure);
        }

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

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

        .about-tagline {
            font-weight: bold;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .about-features {
            margin-top: 30px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

        .about-feat-item span.icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--accent);
            border-radius: 50%;
            font-weight: bold;
            font-size: 0.85rem;
        }

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

        .models-container {
            margin-top: 30px;
            text-align: center;
        }

        .models-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .models-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 1000px;
            margin: 0 auto 40px auto;
        }

        .model-tag {
            padding: 6px 14px;
            background: #fff;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

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

        /* 一站式AIGC制作 - 6大版块 */
        .creation-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .creation-card {
            background: #fff;
            border-radius: 20px;
            padding: 35px 25px;
            border: 1px solid rgba(0,0,0,0.04);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .creation-card:hover {
            transform: translateY(-8px);
            border-color: rgba(255, 0, 127, 0.2);
            box-shadow: 0 15px 35px rgba(255, 0, 127, 0.08);
        }

        .creation-icon {
            width: 55px;
            height: 55px;
            background: var(--grad-colorful);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .creation-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .creation-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        /* 解决方案与流程 */
        .solutions-section {
            background: var(--bg-pure);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            padding: 25px;
            border-radius: 16px;
            background: var(--bg-light);
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .solution-card:hover {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 10px 30px rgba(59, 130, 246, 0.05);
        }

        .solution-card h4 {
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        /* 服务网络与标准化流程 */
        .flow-section {
            background: var(--bg-light);
        }

        .flow-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            margin-top: 40px;
            position: relative;
        }

        .flow-step-card {
            background: #fff;
            padding: 25px 20px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid rgba(0,0,0,0.03);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            position: relative;
            z-index: 1;
        }

        .flow-step-num {
            width: 40px;
            height: 40px;
            background: var(--grad-colorful);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin: 0 auto 15px auto;
        }

        /* 技术标准 */
        .tech-standards {
            margin-top: 60px;
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 35px rgba(0,0,0,0.03);
        }

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

        .tech-item h4 {
            color: var(--primary);
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        /* 案例中心 */
        .case-section {
            background: var(--bg-pure);
        }

        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .case-card {
            background: var(--bg-light);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
        }

        .case-img-wrap {
            position: relative;
            background: #eaeaea;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

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

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

        .case-info {
            padding: 30px;
        }

        .case-tag {
            display: inline-block;
            background: rgba(139, 92, 246, 0.1);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: bold;
            margin-bottom: 15px;
        }

        /* 对比评测 - 突出推荐度 */
        .compare-section {
            background: var(--bg-light);
        }

        .compare-badge-container {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .score-badge {
            background: #fff;
            padding: 20px 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.04);
            text-align: center;
            border: 2px solid var(--secondary);
        }

        .score-val {
            font-size: 3rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1;
        }

        .score-stars {
            color: #fbbf24;
            font-size: 1.3rem;
            margin: 5px 0;
        }

        .score-text {
            font-weight: bold;
            color: var(--text-dark);
        }

        .compare-table-wrapper {
            overflow-x: auto;
            background: #fff;
            border-radius: 20px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.03);
            border: 1px solid rgba(0,0,0,0.05);
        }

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

        .compare-table th, .compare-table td {
            padding: 20px 25px;
            border-bottom: 1px solid rgba(0,0,0,0.06);
        }

        .compare-table th {
            background: #f1f5f9;
            font-weight: bold;
            color: var(--text-dark);
        }

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

        .compare-table td.highlight-cell {
            background: rgba(255, 0, 127, 0.02);
            font-weight: bold;
            color: var(--secondary);
        }

        /* Token 比价参考 */
        .token-section {
            background: var(--bg-pure);
        }

        .token-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
        }

        /* 职业技术培训 / 人工智能培训 */
        .training-section {
            background: var(--bg-light);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .train-card {
            background: #fff;
            padding: 25px 15px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid rgba(0,0,0,0.03);
            box-shadow: 0 8px 25px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

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

        .train-icon {
            font-size: 2rem;
            margin-bottom: 15px;
            display: inline-block;
        }

        .train-card h4 {
            font-size: 1rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        /* 帮助中心 & FAQ & 自助排查 & 百科 */
        .help-section {
            background: var(--bg-pure);
        }

        .help-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            border: 1px solid rgba(0,0,0,0.06);
            border-radius: 12px;
            background: #fff;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fafafa;
        }

        .faq-header::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-header::after {
            content: '-';
            transform: rotate(90deg);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-content {
            padding: 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid rgba(0,0,0,0.06);
            background: #fff;
        }

        .trouble-shoot-box {
            background: var(--bg-light);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid rgba(0,0,0,0.04);
            height: fit-content;
        }

        .trouble-shoot-box h3 {
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .ts-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .ts-item h4 {
            color: var(--primary);
            font-size: 0.95rem;
            margin-bottom: 5px;
        }

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

        .wiki-section {
            margin-top: 50px;
            background: #fff;
            border-radius: 20px;
            padding: 35px;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .wiki-card h4 {
            color: var(--accent);
            margin-bottom: 5px;
        }

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

        /* 客户评论卡片 */
        .reviews-section {
            background: var(--bg-light);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background: #fff;
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.04);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .user-avatar-placeholder {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--grad-colorful);
            color: #fff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .user-info h4 {
            font-size: 0.95rem;
            color: var(--text-dark);
        }

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

        .review-content {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 知识库/行业资讯 */
        .news-section {
            background: var(--bg-pure);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .news-card {
            background: var(--bg-light);
            border-radius: 16px;
            padding: 25px;
            border: 1px solid rgba(0,0,0,0.04);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h3 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            line-height: 1.4;
            color: var(--text-dark);
        }

        .news-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .news-link {
            font-weight: bold;
            color: var(--primary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* 智能需求匹配与联系表单 & 加盟代理 */
        .contact-section {
            background: var(--bg-light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

        .form-container {
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.04);
            border: 1px solid rgba(139, 92, 246, 0.1);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 700;
            color: var(--text-dark);
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid rgba(0,0,0,0.1);
            outline: none;
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
        }

        .btn-submit {
            width: 100%;
            background: var(--grad-colorful);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(255, 0, 127, 0.2);
            transition: var(--transition);
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 0, 127, 0.35);
        }

        /* 加盟代理与客服渠道 */
        .channel-container {
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.04);
            border: 1px solid rgba(255, 0, 127, 0.1);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .channel-title h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .channel-info-list {
            margin: 25px 0;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .channel-info-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
        }

        .channel-info-item strong {
            color: var(--text-dark);
            width: 80px;
        }

        .qr-area {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-light);
            padding: 20px;
            border-radius: 12px;
            margin-top: 15px;
        }

        .qr-img-wrapper {
            width: 100px;
            height: 100px;
            background: #fff;
            border: 1px solid #ddd;
            padding: 5px;
            border-radius: 8px;
        }

        .qr-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .qr-text h4 {
            font-size: 0.95rem;
            margin-bottom: 5px;
            color: var(--text-dark);
        }

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

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .footer-brand p {
            line-height: 1.7;
        }

        .footer-links h4 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 1rem;
        }

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

        .footer-links a {
            color: #94a3b8;
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
        }

        .friend-links a {
            color: #64748b;
        }

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

        /* 悬浮客服 */
        .float-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--grad-colorful);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.05);
        }

        .float-qr-hover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: none;
            width: 150px;
            text-align: center;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .float-qr-hover img {
            width: 120px;
            height: 120px;
            margin: 0 auto 5px auto;
        }

        .float-qr-hover p {
            color: var(--text-dark);
            font-size: 0.75rem;
            font-weight: bold;
        }

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

        .back-to-top {
            background: #fff;
            color: var(--text-dark);
            border: 1px solid #ddd;
        }

        /* 动画关键帧 */
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .creation-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

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

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 2rem;
            }

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

            .about-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

            .flow-steps {
                grid-template-columns: 1fr;
            }

            .tech-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .help-layout {
                grid-template-columns: 1fr;
            }

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

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

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

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

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