:root{
  --radius-sm:2px;--radius-md:6px;--radius-pill:999px;
  --border-width-thin:1px;--border-width-thick:2px;--border-style-ticket:dashed;
  --shadow-ticket:0 2px 8px rgba(0,0,0,0.12);
  --shadow-stamp:0 1px 2px rgba(0,0,0,0.2);
}