body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
 
        }
h1, h2, h3 {
            color: #1a2233;
            border-bottom: 1px solid #dee2e6;
            padding-bottom: 0.5rem;
        }
h1 {
            font-size: 2.5rem;
        }
h2 {
            font-size: 1.75rem;
            margin-top: 2.5rem;
        }
a {
            color: #007bff;
            text-decoration: none;
        }
a:hover {
            text-decoration: underline;
        }
.container {
            background-color: #fff;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }