:root {
  --ink: #1c1c1e;
  --paper: #fbfaf7;
  --muted: #6a6a70;
  --rule: #e0ddd6;
  --link: #315b8c;
}

body {
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
  max-width: 38rem;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 Georgia, "Times New Roman", serif;
}

header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: normal;
  letter-spacing: 0.01em;
}

h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.05rem;
  font-weight: normal;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

nav a {
  margin-right: 1rem;
  font-size: 0.9rem;
}

a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}

a:hover {
  border-bottom-color: var(--link);
}

.notes {
  padding-left: 1.1rem;
}

.notes li {
  margin-bottom: 1rem;
}

.muted {
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8e6e1;
    --paper: #17171a;
    --muted: #9a9aa2;
    --rule: #33333a;
    --link: #8ab4e8;
  }
}