:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #555555;
  --link: #0b57d0;
  --border: #dddddd;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e8;
    --bg: #14161a;
    --muted: #a8a8a8;
    --link: #8ab4ff;
    --border: #333333;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2.5rem 1.25rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

main {
  max-width: 40rem;
  margin: 0 auto;
}

h1 {
  font-size: 1.6rem;
  margin-bottom: 0.25rem;
}

h2 {
  font-size: 1.1rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

p, li {
  color: var(--fg);
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

a {
  color: var(--link);
}

nav.footer-links {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.92em;
}