:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --border: #e2e2e2;
  --link: #0b5fff;
  --max-width: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #eaeaea;
    --muted: #a0a0a0;
    --border: #2a2d33;
    --link: #6ea8ff;
  }
}

* { box-sizing: border-box; }

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

header.site .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
  text-decoration: none;
}

nav.site a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
  font-size: 0.95rem;
}

nav.site a:hover,
nav.site a:focus {
  color: var(--link);
}

main {
  padding: 48px 0;
  min-height: 50vh;
}

main h1 {
  margin-top: 0;
}

main a {
  color: var(--link);
}

.muted {
  color: var(--muted);
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.85rem;
}

footer.site p {
  margin: 4px 0;
}