:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --background: #f9f9f9;
            --code-bg: #f4f4f4;
        }

        body {
            font-family: 'Segoe UI', Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 20px;
            background: var(--background);
            color: var(--primary-color);
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        h1,
        h2 {
            color: var(--secondary-color);
            border-bottom: 2px solid #eee;
            padding-bottom: 10px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            background: white;
        }

        th,
        td {
            padding: 12px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }

        th {
            background: var(--primary-color);
            color: white;
        }

        tr:hover {
            background: #f5f5f5;
        }

        code {
            background: var(--code-bg);
            padding: 2px 6px;
            border-radius: 3px;
            font-family: Monaco, Consolas, monospace;
        }

        pre {
            background: var(--code-bg);
            padding: 15px;
            border-radius: 5px;
            overflow-x: auto;
        }

        .note {
            background: #e8f4ff;
            padding: 15px;
            border-left: 4px solid var(--secondary-color);
            margin: 20px 0;
        }