:root {
  --bg: #fffdfb;
  --text: #1d1b19;
  --muted: #6b645e;
  --link: #C8553D;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161412;
    --text: #f2eeea;
    --muted: #a59d96;
    --link: #E07A5F;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 40px 16px; }
nav { color: var(--muted); font-size: 15px; margin-bottom: 32px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--link); }
a { color: var(--link); }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.muted { color: var(--muted); }
footer { color: var(--muted); font-size: 14px; margin-top: 48px; }