:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1d2733;
  --muted: #536170;
  --line: #d5dbe3;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --notice: #fff6e0;
  --notice-line: #d99a00;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d;
    --panel: #1d232a;
    --text: #e6eaef;
    --muted: #a9b4c0;
    --line: #333d48;
    --accent: #5b95ea;
    --accent-text: #0b1220;
    --notice: #3a2f12;
    --notice-line: #e0a800;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.7;
}
main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}
h1 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}
h2 {
  font-size: 1.15rem;
  margin: 0 0 0.25rem;
}
.choice {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  text-decoration: none;
}
.button:focus-visible {
  outline: 3px solid var(--notice-line);
  outline-offset: 2px;
}
.notice {
  background: var(--notice);
  border-left: 4px solid var(--notice-line);
  padding: 0.5rem 0.75rem;
}
dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
  margin: 0.75rem 0 0;
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
  min-width: 0;
}
code {
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}
.meta {
  color: var(--muted);
  font-size: 0.9rem;
}
.meta a {
  color: inherit;
}