:root {
  --bg: #f5f4f1;
  --card: #ffffff;
  --ink: #1f2933;
  --muted: #5b6672;
  --line: #e3e1dc;
  --accent: #324963;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14181d;
    --card: #1d2329;
    --ink: #e8eaed;
    --muted: #a3acb6;
    --line: #2b333b;
    --accent: #9db7d5;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 16px 4rem; }
header.site { margin-bottom: 2rem; }
header.site a.brand {
  font: 600 1.15rem/1 Georgia, "Times New Roman", serif;
  color: var(--accent);
  text-decoration: none;
}
h1 { font: 600 2rem/1.2 Georgia, "Times New Roman", serif; margin: 0 0 .5rem; }
h2 { font: 600 1.25rem/1.3 Georgia, "Times New Roman", serif; margin: 2rem 0 .5rem; }
p, li { color: var(--ink); }
.lede { color: var(--muted); font-size: 1.05rem; margin-top: 0; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem 1.25rem;
  margin: 1rem 0;
}
.card h2, .card h3 { margin-top: 0; }
a { color: var(--accent); }
ul { padding-left: 1.2rem; }
li { margin: .35rem 0; }
footer { margin-top: 3rem; color: var(--muted); font-size: .9rem; border-top: 1px solid var(--line); padding-top: 1rem; }
footer a { margin-right: 1rem; }