:root {
  color-scheme: light;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #555555;
  --accent: #0b5fff;
  --border: #e2e2e2;
}

* { box-sizing: border-box; }

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

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

header.site {
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
}

header.site .wrap {
  padding: 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}

header.site .brand {
  font-weight: 600;
  font-size: 1.05rem;
}

nav.pages a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.95rem;
}

nav.pages a:hover, nav.pages a:focus {
  color: var(--accent);
  text-decoration: underline;
}

h1 {
  font-size: 1.7rem;
  margin-bottom: 4px;
}

.updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

h2 {
  font-size: 1.15rem;
  margin-top: 36px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

p, li { color: var(--fg); }

ul { padding-left: 1.2em; }

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

.callout {
  background: #f4f7ff;
  border: 1px solid #d6e2ff;
  border-radius: 8px;
  padding: 16px 18px;
  margin: 20px 0;
}

footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}