:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
  --accent: #356f8d;
  --surface: color-mix(in srgb, Canvas 94%, var(--accent) 6%);
  --border: color-mix(in srgb, CanvasText 18%, transparent);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: Canvas;
  color: CanvasText;
}

main {
  width: min(100% - 2rem, 48rem);
  margin: 0 auto;
  padding: 3.5rem 0 5rem;
}

h1,
h2 {
  line-height: 1.35;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
}

h2 {
  margin-top: 2.4rem;
  font-size: 1.25rem;
}

p,
li {
  max-width: 42rem;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

.lead {
  margin-top: 0;
  font-size: 1.08rem;
}

.notice,
.card {
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--surface);
}

.card-list {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.card h2 {
  margin-top: 0;
}

.meta,
footer {
  color: color-mix(in srgb, CanvasText 68%, transparent);
  font-size: 0.92rem;
}

footer {
  margin-top: 3.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
}

code {
  overflow-wrap: anywhere;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}