#retroRain{position:fixed;inset:0;width:100vw;height:100vh;image-rendering:pixelated;image-rendering:crisp-edges;pointer-events:none;z-index:-1;display:block;}
#retroRainToggle{position:fixed;z-index:9999;cursor:pointer;user-select:none;filter:drop-shadow(0 2px 4px rgba(0,0,0,.35));}
#retroRainToggle img{display:block;width:100%;height:100%;object-fit:contain;}

#retroMiniBtn,#retroBoardBtn{position:fixed;z-index:9999;cursor:pointer;user-select:none;filter:drop-shadow(0 2px 4px rgba(0,0,0,.35))}
#retroMiniBtn img,#retroBoardBtn img{display:block;width:100%;height:100%;object-fit:contain}