body { margin: 0; background: #0B1F3A; color: #fff; font: 17px/1.6 system-ui, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 16px; }
h1 { font-weight: 900; margin-top: 2em; }
h1:first-of-type { margin-top: 0.5em; }
a { color: #E63946; }
nav { margin-top: 2em; }
code { word-break: break-all; background: rgba(255,255,255,.1); padding: 2px 6px; border-radius: 4px; }