html, body {
    margin: 0;
    padding: 0;
    background: #0d1117;
    color: #c9d1d9;
    font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
    font-size: 14px;
    line-height: 1.5;
}
main {
    max-width: 640px;
    margin: 2rem auto;
    padding: 0 1rem;
}
h1 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 1rem;
    color: #8b949e;
}
pre {
    background: #161b22;
    border: 1px solid #30363d;
    padding: 1rem;
    border-radius: 4px;
    white-space: pre-wrap;
    word-break: break-all;
    margin: 0;
}
.foot {
    margin-top: 1rem;
    color: #6e7681;
    font-size: 0.85rem;
}
.foot a {
    color: #58a6ff;
    text-decoration: none;
}
.foot a:hover { text-decoration: underline; }
.ok { color: #3fb950; }
.warn { color: #d29922; }
.err { color: #f85149; }