:root {
  --brand: #0ea5e9;
  --text: #0b0c0f;
  --muted: #4b5563;
  --border: #e5e7eb;
  --bg: #fff;
}

body {
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial;
  margin: 0;
  background: var(--bg);
  color: var(--text);
}