:root {
  --font-family-base: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --page-max-width: 1200px;
  --ui-radius: 0.75rem;
  --shadow-soft: 0 20px 45px rgba(15, 23, 42, 0.12);
  --transition-base: 180ms ease;
}