:root{
  --field-height:52px;
  --field-width:625px;
  --field-textarea-height:170px;
  --field-radius:0px;
  --field-fill:var(--white);
  --field-border:#e9e9e9;
  --field-border-focus:var(--ink-500);
  --field-padding-x:14px;
  --field-label-gap:10px;   /* label baseline block to field top */
  --field-stack-gap:24px;   /* field to next label */
  --field-group-gap:56px;   /* between logical groups (address → message) */
  --required-mark:var(--croco-red-500);
  --checkbox-size:14px;
}