:root {
  --brand: #2E7D32;
  --brand-dark: #1b5e20;
  --text: #1a1a1a;
  --muted: #555;
  --bg: #fafafa;
  --card: #ffffff;
  --border: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #66bb6a;
    --brand-dark: #2E7D32;
    --text: #f3f4f6;
    --muted: #b3b3b3;
    --bg: #121212;
    --card: #1e1e1e;
    --border: #2a2a2a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

header {
  background: var(--brand);
  color: #fff;
  padding: 28px 24px;
}

header .wrap {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

header .logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

header h1 {
  font-size: 22px;
  margin: 0;
  font-weight: 600;
}

header a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-size: 14px;
}

main {
  max-width: 720px;
  margin: 32px auto;
  padding: 0 24px 64px;
}

main h1 {
  font-size: 28px;
  margin: 0 0 4px;
}

.updated {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
}

main h2 {
  font-size: 19px;
  margin: 32px 0 8px;
  color: var(--brand);
}

main p {
  margin: 0 0 14px;
}

a {
  color: var(--brand-dark);
}

footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

footer a {
  color: inherit;
}