:root {
  --fg: #1a1a1a;
  --bg: #fafafa;
  --muted: #555;
  --rule: #ddd;
  --code-bg: #f0f0f0;
  --code-border: #ccc;
}

/*
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #d6d6d6;
    --bg: #121212;
    --muted: #999;
    --rule: #333;
    --code-bg: #1e1e1e;
    --code-border: #444;
  }
}
*/

body {
  max-width: 80ch;
  margin: 4rem auto;
  padding: 0 1.25rem;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
  font-family: Georgia, Cambria, "Times New Roman", Times, serif;
}

h1 {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0 0 0.25rem 0;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 3rem 0;
  font-style: italic;
}

h2 {
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 3.5rem 0 1.25rem 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}

p {
  margin: 0 0 1.25rem 0;
}

ul {
  margin: 0 0 1.25rem 0;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

pre {
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Menlo,
               Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.5;
  background: var(--code-bg);
  border-left: 3px solid var(--code-border);
  padding: 1rem;
  overflow-x: auto;
  margin: 0 0 1.25rem 0;
}

a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.alt {
  color: var(--muted);
  font-size: 0.9rem;
  border-left: 2px solid var(--rule);
  padding-left: 1rem;
  margin-left: 0;
}