:root {
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
body { font-family: var(--font-sans); }
h1, h2, h3, .brand, .hero-title { font-family: var(--font-display); }
code, pre, kbd { font-family: var(--font-mono); }