body {
    font-family: sans-serif;
    line-height: 1.6;
    max-width: 650px;
    margin: 40px auto;
    padding: 0 10px;
    color: #333;
    background: #fff;
}

@media (prefers-color-scheme: dark) {
    body { color: #ddd; background: #121212; }
}

pre, code { background: #f4f4f4; padding: 2px 5px; }

@media (prefers-color-scheme: dark) {
    pre, code { background: #222; }
}