body { font: 17px/1.55 system-ui, sans-serif; max-width: 42rem; margin: 3rem auto; padding: 0 1rem; color: #1b1b1b; background: #fff; }
h1, h2 { line-height: 1.25; }
a { color: #0b57d0; }
footer { margin-top: 3rem; font-size: .9rem; color: #555; }
@media (prefers-color-scheme: dark) { body { color: #e8e8e8; background: #16181c; } a { color: #8ab4f8; } footer { color: #aaa; } }