:root{
  /* The deck leans on 1px borders, not shadows. Shadows here are for screen UI only. */
  --shadow-none:none;
  --shadow-card:0 1px 2px rgba(84,84,84,.08);
  --shadow-raised:0 4px 12px rgba(84,84,84,.12);
  --shadow-dialog:0 16px 48px rgba(84,84,84,.22);
  --border-width:1px;
  --focus-ring:0 0 0 3px rgba(87,168,97,.35);
}