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screen-shake{0%,to{transform:translate(0)}25%{transform:translate(-4px,2px)}50%{transform:translate(4px,-2px)}75%{transform:translate(-2px,4px)}}.screen-shake{animation:screen-shake .3s ease}@media(max-width:500px){.ring-title{font-size:1.6rem}.monkey{font-size:3.5rem}.arena{min-height:180px;padding:1rem 1.25rem}.controls{gap:.5rem}.btn{padding:.75rem .25rem;font-size:.85rem}}