:root {
  color-scheme: light dark;
  --bg: #f8f8f6;
  --fg: #1c1c1a;
  --muted: #6b6b67;
  --line: #d6d6d2;
  --accent: #1a5fb4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  line-height: 1.65;
}

.container {
  width: min(100%, 70ch);
  margin: 0 auto;
  padding: 1.25rem;
}

nav {
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

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

h1,
h2,
h3 {
  line-height: 1.2;
  margin-top: 1.3em;
}

p {
  margin: 0.8em 0;
}

ul {
  padding-left: 1.25rem;
}

.dead-link {
  color: var(--muted);
  text-decoration: none;
  opacity: 0.8;
}

@media (max-width: 720px) {
  .container {
    padding: 1rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111312;
    --fg: #eceeec;
    --muted: #9ea3a0;
    --line: #2b302d;
    --accent: #8fb8ff;
  }
}