:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  --accent: #3867d6;
  --muted: #666;
  --surface: #f5f7fb;
  --border: #d9deea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #8eafff;
    --muted: #aaa;
    --surface: #17191e;
    --border: #353942;
  }
}

body {
  margin: 0;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 72px;
}

h1, h2 {
  line-height: 1.25;
}

h1 {
  margin-bottom: 0.25rem;
}

h2 {
  margin-top: 2rem;
}

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

.meta {
  color: var(--muted);
  margin-top: 0;
}

.notice {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
}

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