:root {
  color-scheme: light dark;
  --text: #1d1d1f;
  --muted: #5f5f66;
  --accent: #b81c2a;
  --background: #fbfaf7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f2f4;
    --muted: #a6a6ad;
    --accent: #ff6b74;
    --background: #161617;
  }
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.8;
}

main,
footer {
  max-width: 40rem;
  margin: 0 auto;
  padding: 0 16px;
}

main {
  padding-top: 2.5rem;
}

h1 {
  color: var(--accent);
  margin-bottom: 0.25rem;
}

h2 {
  margin-top: 2.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--muted) 40%, transparent);
}

.lead {
  font-size: 1.1rem;
}

dt {
  font-weight: bold;
  margin-top: 1rem;
}

dd {
  margin-left: 0;
}

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

footer {
  color: var(--muted);
  font-size: 0.9rem;
  padding-top: 3rem;
  padding-bottom: 2rem;
}