:root {
  color-scheme: light;
  --bg: #f8f9fb;
  --surface: #ffffff;
  --text: #1a1d21;
  --muted: #5f6368;
  --accent: #1f4b99;
  --border: #e3e6ea;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

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

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.25rem;
}

header a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

nav.page-nav {
  margin: 0 0 1.5rem;
  font-size: 0.9rem;
}

nav.page-nav a {
  color: var(--accent);
}

h1 {
  font-size: 1.75rem;
  line-height: 1.3;
  margin: 0 0 0.5rem;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.draft-badge {
  display: inline-block;
  background: #fff4e5;
  color: #8a4b00;
  border: 1px solid #ffd699;
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.25rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.125rem;
  margin: 1.25rem 0 0.5rem;
}

h2:first-child {
  margin-top: 0;
}

p, li {
  margin: 0.5rem 0;
}

ul {
  padding-left: 1.25rem;
}

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

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}

.link-list {
  list-style: none;
  padding: 0;
}

.link-list li {
  margin: 0.75rem 0;
}

.link-list a {
  font-weight: 600;
}

.todo {
  background: #f1f3f4;
  border-left: 3px solid #9aa0a6;
  padding: 0.5rem 0.75rem;
  margin: 0.75rem 0;
  font-size: 0.9rem;
}

.pending,
.release-blocker {
  color: #8a4b00;
  font-weight: 600;
}

.note {
  background: #f8f9fb;
  border-left: 3px solid var(--accent);
  padding: 0.5rem 0.75rem;
  margin: 0.75rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}