:root { color-scheme: light dark; --ink: #1d1d1f; --paper: #fbfaf7; --accent: #b4532a; --muted: #6b6b6b; }
@media (prefers-color-scheme: dark) { :root { --ink: #f2f2f2; --paper: #161616; --accent: #e8926a; --muted: #a0a0a0; } }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif; color: var(--ink); background: var(--paper); line-height: 1.55; }
main { max-width: 720px; margin: 0 auto; padding: 48px 24px 80px; }
header a { color: var(--accent); text-decoration: none; font-weight: 600; }
nav { display: flex; gap: 20px; margin: 8px 0 32px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
h1 { font-size: 34px; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
p, li { font-size: 17px; }
.lede { font-size: 20px; color: var(--muted); }
footer { margin-top: 56px; font-size: 14px; color: var(--muted); }
code { background: rgba(127,127,127,0.15); padding: 1px 5px; border-radius: 4px; }