/* 基础样式 */
        body {
            background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
            color: #ffffff;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            min-height: 100vh;
        }
        
        .seo-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* LSI关键词高亮 */

        /* 功能卡片 */
        .feature-card {
            background: rgba(30, 30, 30, 0.9);
            border: 1px solid rgba(255, 193, 7, 0.3);
            border-radius: 12px;
            padding: 25px;
            transition: all 0.3s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #ffc107, #ff9800);
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(255, 193, 7, 0.2);
            border-color: #ffc107;
        }
        
        /* 统计数字样式 */
        .stat-number {
            font-size: 2.5rem;
            font-weight: bold;
            background: linear-gradient(45deg, #ffc107, #ff9800);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        /* CTA按钮 */
        .cta-button {
            background: linear-gradient(135deg, #ffc107 0%, #ff9800 100%);
            color: #000000;
            padding: 15px 40px;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
            box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
        }
        
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 193, 7, 0.4);
            background: linear-gradient(135deg, #ff9800 0%, #ffc107 100%);
        }
        
        /* 用户评价卡片 */
        .testimonial-card {
            background: rgba(40, 40, 40, 0.9);
            border-radius: 12px;
            padding: 25px;
            border-left: 5px solid #ffc107;
            position: relative;
        }
        
        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 10px;
            left: 15px;
            font-size: 4rem;
            color: rgba(255, 193, 7, 0.2);
            font-family: Georgia, serif;
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .seo-container {
                padding: 0 15px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            h2 {
                font-size: 1.5rem;
            }
            
            .stat-number {
                font-size: 2rem;
            }
        }
        
        /* 打印样式 */
        @media print {
            body {
                background: white !important;
                color: black !important;
            }
            
            .feature-card, .testimonial-card {
                border: 1px solid #ddd !important;
            }
            
            .cta-button, nav, footer {
                display: none !important;
            }
        }
        
        /* 图片优化 */
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            transition: transform 0.3s ease;
        }
        
        img:hover {
            transform: scale(1.02);
        }
        
        /* 内容分隔线 */
        .section-divider {
            height: 2px;
            background: linear-gradient(90deg, transparent, #ffc107, transparent);
            margin: 40px 0;
            width: 100%;
        }