:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: #1f2937;
  background: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.8;
}

main {
  width: min(100% - 32px, 760px);
  margin: 0 auto;
  padding: 40px 0 64px;
}

.site-header {
  margin-bottom: 32px;
}

.brand {
  display: inline-block;
  margin: 0 0 8px;
  color: #2563eb;
  font-weight: 700;
  text-decoration: none;
}

h1 {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  line-height: 1.35;
  color: #111827;
}

h2 {
  margin: 36px 0 12px;
  font-size: 1.2rem;
  line-height: 1.5;
  color: #111827;
}

p,
ul {
  margin: 0 0 16px;
}

ul {
  padding-left: 1.5rem;
}

.updated {
  margin-top: 10px;
  color: #6b7280;
  font-size: 0.95rem;
}

a {
  color: #1d4ed8;
  overflow-wrap: anywhere;
}

.document-links {
  display: grid;
  gap: 12px;
}

.document-links a {
  display: block;
  padding: 16px 18px;
  border: 1px solid #dbe3ee;
  border-radius: 12px;
  background: #ffffff;
  text-decoration: none;
  font-weight: 600;
}

section {
  scroll-margin-top: 24px;
}

footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #dbe3ee;
}