body {
            font-family: Arial, sans-serif;
            background-color: #f7f7f7;
            color: #333;
            line-height: 1.6;
            margin: 0;
            padding: 0;
        }
        .container {
            max-width: 900px;
            margin: 40px auto;
            background: #ffffff;
            padding: 30px;
            border-radius: 6px;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        h1, h2 {
            color: #222;
        }
        h1 {
            font-size: 24px;
            margin-bottom: 10px;
        }
        h2 {
            font-size: 18px;
            margin-top: 30px;
        }
        p, li {
            font-size: 14px;
        }
        ul {
            padding-left: 20px;
        }
        .footer {
            margin-top: 40px;
            font-size: 13px;
            color: #666;
            text-align: center;
        }