/* 亮紫炫烂风 UI 规范 */
        :root {
            --primary: #7c3aed;
            --primary-light: #a78bfa;
            --primary-dark: #6d28d9;
            --secondary: #d946ef;
            --accent: #f43f5e;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-body: #fafafa;
            --bg-section: #f3e8ff;
            --bg-card: #ffffff;
            --border-color: #f3e8ff;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

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

        /* 头部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
        }

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

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

        .logo-box img {
            height: 40px;
        }

        .logo-title {
            font-size: 1.25rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.9rem;
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white !important;
            padding: 8px 16px;
            border-radius: 20px;
            transition: var(--transition);
        }

        .nav-btn:hover {
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
            transform: translateY(-2px);
        }

        /* 导航开关（移动端） */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* 核心区 section 规范 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 1. Hero 首屏 - 无任何图片 */
        #hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at top right, rgba(217, 70, 239, 0.1), transparent), 
                        radial-gradient(circle at bottom left, rgba(124, 58, 237, 0.1), transparent);
            position: relative;
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        /* H1 严格控制在20字以内 */
        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-content p {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .btn {
            padding: 14px 28px;
            border-radius: 30px;
            font-weight: 600;
            text-align: center;
            display: inline-block;
            cursor: pointer;
            border: none;
            transition: var(--transition);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(124, 58, 237, 0.4);
            color: white;
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

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

        /* 3. 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 25px 15px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(124, 58, 237, 0.1);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

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

        /* 2. 关于我们 - 平台介绍 */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

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

        .features-list li {
            position: relative;
            padding-left: 25px;
            font-weight: 500;
            color: var(--text-dark);
        }

        .features-list li::before {
            content: "✓";
            color: var(--secondary);
            font-weight: bold;
            position: absolute;
            left: 0;
        }

        .about-media {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

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

        /* 4. 服务能力卡片 (全平台 AIGC 服务) */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px 30px;
            border-radius: 16px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(124, 58, 237, 0.15);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            display: inline-block;
        }

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

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

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

        .service-tag {
            background: var(--bg-section);
            color: var(--primary-dark);
            font-size: 0.75rem;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 5. 流程步骤 & 8. 技术标准 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            font-size: 1.5rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 5px 15px rgba(124, 58, 237, 0.3);
        }

        .step-item h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        /* 对比表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--bg-card);
        }

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

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

        th {
            background-color: var(--bg-section);
            color: var(--text-dark);
            font-weight: 700;
        }

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

        .highlight-row {
            background-color: rgba(124, 58, 237, 0.05);
        }

        /* 评分星级 */
        .rating {
            color: #fbbf24;
            font-size: 1.25rem;
        }

        .badge-score {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: white;
            padding: 3px 8px;
            border-radius: 6px;
            font-weight: bold;
            font-size: 0.85rem;
        }

        /* 案例与文章 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        /* 职业技术培训 */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .train-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            transition: var(--transition);
            border-top: 4px solid var(--primary);
        }

        .train-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
        }

        .train-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

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

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

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

        .faq-header {
            padding: 20px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-header::after {
            content: '+';
            font-size: 1.25rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
        }

        .faq-item.active .faq-body {
            max-height: 300px;
            padding-bottom: 20px;
        }

        .faq-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

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

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

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

        .review-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.2rem;
        }

        .review-info h4 {
            font-size: 1rem;
            color: var(--text-dark);
        }

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

        .review-content {
            color: var(--text-muted);
            font-size: 0.92rem;
            font-style: italic;
        }

        /* 表单板块与联系方式 */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
        }

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

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

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

        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        .form-group input, 
        .form-group select, 
        .form-group textarea {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            background: #fafafa;
            outline: none;
            transition: var(--transition);
        }

        .form-group input:focus, 
        .form-group select:focus, 
        .form-group textarea:focus {
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
        }

        .info-card {
            background: linear-gradient(135deg, var(--primary-dark), #4c1d95);
            color: white;
            padding: 40px;
            border-radius: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-card h3 {
            font-size: 1.8rem;
            margin-bottom: 25px;
        }

        .info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .info-list li {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .info-list strong {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            opacity: 0.7;
        }

        .info-list span {
            font-size: 1.1rem;
            font-weight: 500;
        }

        .qrcode-box {
            margin-top: 30px;
            background: rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
        }

        .qrcode-box img {
            max-width: 120px;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        .qrcode-box p {
            font-size: 0.85rem;
            opacity: 0.8;
        }

        /* 标签云、网格 */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tag-cloud-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .tag-cloud-item:hover {
            background: var(--primary);
            color: white;
            transform: scale(1.05);
        }

        /* 自助排查与术语 */
        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .wiki-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
        }

        .wiki-card h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--text-dark);
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 10px;
        }

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

        .wiki-list li strong {
            color: var(--primary);
            display: block;
            margin-bottom: 4px;
        }

        .wiki-list li p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
            border-top: 4px solid var(--primary);
        }

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

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-about p {
            line-height: 1.6;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1rem;
            position: relative;
        }

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

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

        .footer-links a:hover {
            color: white;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 15px;
        }

        .friend-links a {
            color: #94a3b8;
            font-size: 0.85rem;
        }

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

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

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: var(--transition);
        }

        .float-kefu:hover {
            transform: scale(1.1);
        }

        .kefu-popover {
            position: absolute;
            bottom: 75px;
            right: 0;
            background: white;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            width: 220px;
            display: none;
            text-align: center;
        }

        .kefu-popover.active {
            display: block;
        }

        .kefu-popover img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-bottom: 8px;
        }

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

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid, .services-grid, .cases-grid, .train-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-wrapper, .contact-wrapper, .wiki-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            }

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

            .nav-toggle {
                display: flex;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .stats-grid, .process-steps {
                grid-template-columns: 1fr;
            }

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

            .form-group.full-width {
                grid-column: span 1;
            }
        }

        @media (max-width: 480px) {
            .services-grid, .cases-grid, .train-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }