* { margin:0; padding:0; box-sizing:border-box; }
body { background:#000; overflow:hidden; font-family:system-ui,-apple-system,'Segoe UI',sans-serif; }
#c { display:block; width:100vw; height:100vh; }
#minimap { display:block; width:100%; height:100%; }

/* Lock hint */
#lock-hint { 
  position:fixed; bottom:18px; left:50%; transform:translateX(-50%);
  font-size:12px; color:rgba(255,255,255,0.4); letter-spacing:1px; 
  z-index:15; pointer-events:none; display:none; 
}