@media (max-width: 900px){
  html,body{overflow-x:hidden;overscroll-behavior-x:none}body{padding-bottom:env(safe-area-inset-bottom)}
  .studio-header{grid-template-columns:1fr auto;padding:12px 14px;gap:10px;position:sticky}
  .brand{grid-column:1;grid-row:1}.brand img{width:30px;height:30px}.brand strong{font-size:12px}.brand small{font-size:12px}
  .header-copy{grid-column:1/-1;grid-row:2;padding:5px 0 2px}.eyebrow{font-size:12px}.header-copy h1{font-size:26px;margin:5px 0 3px}.header-copy p{font-size:12px;line-height:1.35}
  .header-actions{grid-column:1/-1;grid-row:3;gap:7px;flex-wrap:wrap;padding-top:2px}.header-actions .button{min-height:44px;padding:0 10px;font-size:12px;touch-action:manipulation}.header-actions #reset-map{display:none}
  .studio-layout{grid-template-columns:1fr;padding:0 10px;margin-top:10px;gap:10px}
  .map-stage{min-height:0;height:auto;order:1;border-radius:15px}.stage-topline{padding:11px 13px;font-size:12px}.stage-topline span:last-child{max-width:42%;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  #map-wrap{min-height:56dvh;height:56dvh;scroll-margin-top:12px}.studio-map,#studio-map{min-height:0;height:100%;touch-action:pan-x pan-y}.map-title{font-size:18px}.map-subtitle{font-size:12px}.map-label{font-size:12px;stroke-width:2.5px}.legend-box{transform:scale(.86);transform-origin:bottom right}
  .stage-caption{display:grid;gap:8px;padding:12px 14px;font-size:12px}.stage-caption strong{font-size:13px}#caption-source{text-align:left;max-width:none}
  .builder-panel{order:2;max-height:0;padding:0 16px;border-width:0;box-shadow:none;border-radius:15px;overflow:hidden;contain:layout paint;transition:max-height .28s ease,padding .28s ease,border-width .28s ease;will-change:max-height}
  .studio-layout.controls-open .builder-panel{max-height:2200px;padding:18px 16px;border-width:1px;background:rgba(13,34,43,.98)}.builder-divider{margin:18px 0}.field-label{margin-top:15px}.field{min-height:48px;touch-action:manipulation}.toggle-row{gap:12px;margin:18px 0}.button-export{min-height:48px}.text-button{padding:15px 0 0;min-height:44px}.studio-status{margin-bottom:2px}
  .studio-footer{padding:17px 14px;display:grid;gap:8px;font-size:12px;line-height:1.4}.studio-footer a{font-size:12px}
}
@media (min-width:901px){#toggle-controls{display:none}}
@media (prefers-reduced-motion:reduce){.builder-panel{transition:none}}