/* Four floor tabs, same compact HUB visual style. */
@media(max-width:600px){
  #floor-explorer .hub-floor-tabs{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}
  #floor-explorer .hub-floor-tabs button{min-width:0;padding:9px 4px;font-size:13px}
  #floor-explorer .hub-floor-tabs button small{font-size:9px;white-space:nowrap}
}