:root {
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 50px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.1);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}