:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #d0d7de;
  --link: #0a58ca;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181c;
    --fg: #e6e8eb;
    --muted: #3a3f46;
    --link: #7ab3ff;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

h1 {
  font-size: 1.6rem;
  line-height: 1.3;
}

h2 {
  font-size: 1.1rem;
  margin-top: 1.75rem;
}

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

hr {
  border: 0;
  border-top: 1px solid var(--muted);
  margin: 2.5rem 0;
}

code {
  overflow-wrap: anywhere;
}