:root { color-scheme: light dark; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #f4f6fb;
  color: #1c2333;
}
main { max-width: 36rem; padding: 2rem; }
h1 { margin: 0.5rem 0 1rem; }
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: #1c2333;
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.note { opacity: 0.7; }
code { background: rgba(0, 0, 0, 0.08); padding: 0.1rem 0.35rem; border-radius: 4px; }
@media (prefers-color-scheme: dark) {
  body { background: #11151f; color: #e8ecf5; }
  .badge { background: #e8ecf5; color: #11151f; }
}