:root {
  --ink: #2b2118;
  --muted: #7a6a5c;
  --bg: #fffaf2;
  --line: #eadbc8;
  --link: #1f6f8b;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --ink: #f1e8dc; --muted: #b8a99a; --bg: #1d1626; --line: #3a3040; --link: #7cc4e4; }
}
:root[data-theme="dark"] { --ink: #f1e8dc; --muted: #b8a99a; --bg: #1d1626; --line: #3a3040; --link: #7cc4e4; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 32px; line-height: 1.2; margin: 16px 0 4px; }
h2 { font-size: 20px; margin: 32px 0 8px; padding-top: 16px; border-top: 1px solid var(--line); }
a { color: var(--link); }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.muted { color: var(--muted); }