:root {
  --bg: #f5f7f8;
  --ink: #121920;
  --muted: #4d5966;
  --line: #d5dde3;
  --accent: #1d4e89;
  --accent-ink: #f5f9ff;
  --paper: #ffffff;
}
body { background: #f5f7f8; }
h1 { letter-spacing: -0.02em; }