:root {
            --primary-color: #2c3e50;
            --secondary-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --border-radius: 4px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f9f9f9;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        main {
            padding: 2rem 0;
            background-color: white;
        }
        
        .page-header {
            text-align: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        
        .page-header h1 {
            font-size: 2.2rem;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        
        .content-section {
            margin-bottom: 2.5rem;
        }
        
        .content-section h2 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            font-size: 1.5rem;
            border-left: 4px solid var(--secondary-color);
            padding-left: 10px;
        }
        
        .content-section h3 {
            color: var(--dark-color);
            margin: 1.5rem 0 0.5rem;
            font-size: 1.2rem;
        }
        
        .content-section p {
            margin-bottom: 1rem;
        }
        
        .content-section ul {
            margin-bottom: 1rem;
            padding-left: 2rem;
        }
        
        .content-section ul li {
            margin-bottom: 0.5rem;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        table th, table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        
        table th {
            background-color: var(--light-color);
            color: var(--dark-color);
        }
        
        table tr:hover {
            background-color: #f5f5f5;
        }
        
        @media (max-width: 768px) {
            table {
                display: block;
                overflow-x: auto;
            }
        }