:root { color-scheme: light dark; --ink: #1b1726; --paper: #faf8f5; --muted: #6b6478; --line: #e4dfe9; }
@media (prefers-color-scheme: dark) { :root { --ink: #ece8f3; --paper: #120d1c; --muted: #a49cb3; --line: #2c2440; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .25rem; }
h2 { font-size: 1.2rem; margin: 2.25rem 0 .5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
h3 { font-size: 1rem; margin: 1.5rem 0 .25rem; }
p, li { margin: .5rem 0; }
.muted { color: var(--muted); }
a { color: inherit; text-underline-offset: .2em; }
footer { margin-top: 3rem; color: var(--muted); font-size: .9rem; }