:root {
            --primary: #2c3e50;
            --secondary: #0A71FF;
            --accent: #e74c3c;
            --light-bg: #f8f9fa;
            --dark-text: #343a40;
            --light-text: #6c757d;
            --border-color: #e9ecef;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--dark-text);
            background-color: white;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-title {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 15px;
            font-weight: 600;
        }
        .center-title{
            color: var(--secondary);
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--light-text);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--light-text);
            max-width: 800px;
            margin: 25px auto 0;
            line-height: 1.8;
        }
        
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        
        .advantage-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--secondary);
        }
        
        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        
        .card-header {
            padding: 15px 25px 10px;
            position: relative;
        }
        
        .card-title {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        
        .card-subtitle {
            font-size: 1rem;
            color: var(--secondary);
            font-weight: 500;
        }
        
        .card-body {
            padding: 0 25px 25px;
        }
        
        .card-content {
            font-size: 0.95rem;
            color: var(--dark-text);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .content-title{
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        
        .powered-by {
            text-align: center;
            margin-top: 50px;
            font-size: 0.9rem;
            color: var(--light-text);
            position: relative;
        }
        
        .powered-by:before {
            content: "";
            position: absolute;
            top: -25px;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 1px;
            background: var(--border-color);
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 40px 20px;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 25px;
                margin-top: 40px;
            }
            
            .advantage-card {
                margin-bottom: 0;
            }
        }