:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif}body,html{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background-color:#fff}#app{width:100%;height:100%;display:flex;justify-content:center;align-items:center}button{position:relative;width:auto;height:auto;background:none;border:none;padding:0;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:transform .1s}button:active{transform:scale(.95)}.cat-img{display:block;max-width:80vw;max-height:60vh;object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.batsu-img{position:absolute;top:65%;left:50%;width:30%;height:auto;transform:translate(-50%,-50%) scale(2);opacity:0;pointer-events:none;z-index:10}.btn-text{position:absolute;top:5%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:4rem;font-weight:900;white-space:nowrap;text-shadow:3px 3px 0 #000,-3px -3px 0 #000,-3px 3px 0 #000,3px -3px 0 #000,3px 0 0 #000,-3px 0 0 #000,0 3px 0 #000,0 -3px 0 #000,0 0 15px rgba(0,0,0,.8);z-index:15;pointer-events:none}.active .batsu-img{animation:stamp-in .4s cubic-bezier(.175,.885,.32,1.275) forwards}@keyframes stamp-in{0%{opacity:0;transform:translate(-50%,-50%) scale(2)}50%{opacity:1;transform:translate(-50%,-50%) scale(.9)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}.flash-effect{animation:flash-bg .3s ease-out}@keyframes flash-bg{0%{background-color:#fff}25%{background-color:#fcc}50%{background-color:#fff}75%{background-color:#fcc}to{background-color:#fff}}