:root {
  color-scheme: light dark;
  --bg: #f7f6f4;
  --fg: #2a2a28;
  --muted: #6b6a66;
  --link: #3a5a78;
  --border: #ddd9d3;
  --code-bg: #ece9e4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1b1a;
    --fg: #e6e4e0;
    --muted: #a3a19c;
    --link: #8fb3cf;
    --border: #3a3a37;
    --code-bg: #2a2a28;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  line-height: 1.7;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

nav.lang-nav {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}

nav.lang-nav a {
  color: var(--link);
}

h1, h2 {
  line-height: 1.4;
}

h1 {
  font-size: 1.5rem;
  margin-top: 0;
}

h2 {
  font-size: 1.15rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

p, ul, ol {
  overflow-wrap: anywhere;
}

ul, ol {
  padding-left: 1.4rem;
}

li + li {
  margin-top: 0.5rem;
}

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

code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 0.25em;
  font-size: 0.92em;
}

section + section {
  margin-top: 2rem;
}