:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-muted: #6b7280;
  --accent: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --border: #272c37;
    --text: #e5e7eb;
    --text-muted: #9aa3b2;
    --accent: #60a5fa;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

nav.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

nav.top .brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

nav.top .links {
  display: flex;
  gap: 20px;
}

nav.top .links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

nav.top .links a:hover {
  color: var(--accent);
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 4px;
}

.updated {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0 0 32px;
}

h2 {
  font-size: 1.15rem;
  margin: 32px 0 8px;
}

p, li {
  color: var(--text);
  font-size: 0.98rem;
}

ul {
  padding-left: 22px;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.card-link {
  display: block;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
}

.card-link strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.card-link span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.card-link:hover {
  border-color: var(--accent);
}

footer.legal-footer {
  max-width: 720px;
  margin: 40px auto 0;
  padding: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}