body {
            margin: 0;
            padding: 24px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
            line-height: 1.5;
            color: #111827;
            background: #f3f4f6;
        }
        main {
            max-width: 900px;
            margin: 0 auto;
            background: #ffffff;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            padding: 20px;
        }
        h1, h2 {
            margin-top: 0;
        }
        code {
            background: #f9fafb;
            border: 1px solid #e5e7eb;
            border-radius: 4px;
            padding: 1px 6px;
        }