/* 仅保留页面布局样式，不影响ajax_faq_setting内部结构 */
        :root {
            --primary-color: #4a6baf;
            --secondary-color: #f8f9fa;
            --text-color: #333;
            --light-gray: #e9ecef;
            --border-radius: 8px;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #fff;
            padding: 0;
            margin: 0;
        }
        
        .faq-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }
        
        .faq-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        
        .faq-header h2 {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .faq-header p {
            font-size: 1.1rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }
        
        .faq-categories {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
            justify-content: center;
        }
        
        .faq-category-btn {
            padding: 0.8rem 1.5rem;
            background-color: var(--secondary-color);
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .faq-category-btn:hover,
        .faq-category-btn.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }       
        
        .contact-promo {
            background-color: var(--secondary-color);
            padding: 2rem;
            border-radius: var(--border-radius);
            text-align: center;
            margin-top: 3rem;
        }
        
        .contact-promo h3 {
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        
        .contact-promo p {
            margin-bottom: 1.5rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .btn {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            background-color: var(--primary-color);
            color: white;
            text-decoration: none;
            border-radius: var(--border-radius);
            font-weight: 500;
            transition: background-color 0.3s ease;
        }
        
        .btn:hover {
            background-color: #3a559c;
        }
        
        @media (max-width: 768px) {
            .faq-container {
                padding: 1.5rem;
            }
            
            .faq-header h1 {
                font-size: 2rem;
            }
            
            .faq-categories {
                flex-direction: column;
            }
        }