body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    line-height: 1.6;
    color: #1a1a1a;
}
h1 { border-bottom: 2px solid #333; padding-bottom: 8px; }
h2 { margin-top: 30px; border-bottom: 1px solid #ccc; padding-bottom: 4px; }
a { color: #0366d6; text-decoration: none; }
a:hover { text-decoration: underline; }
code {
    background: #f4f4f4;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: "Menlo", "Monaco", "Courier New", monospace;
    font-size: 0.9em;
}
pre {
    background: #f8f8f8;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 12px 16px;
    overflow-x: auto;
    line-height: 1.4;
}
pre code {
    background: none;
    padding: 0;
    font-family: monospace;
}
ol { padding-left: 24px; }
ul { padding-left: 24px; }
table {
    border-collapse: collapse;
    width: 100%;
    margin-top: 16px;
}
th, td {
    border: 1px solid #ddd;
    padding: 8px 12px;
    text-align: left;
}
th {
    background: #f4f4f4;
    font-weight: 600;
}