html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background-color:#001e36;font-family:Inter,sans-serif}#renderCanvas{width:100%;height:100%;touch-action:none;outline:none}#ui-container{position:absolute;bottom:20px;right:20px;z-index:10}.btn{background:#00000080;color:#fff;border:1px solid rgba(255,255,255,.3);padding:10px 20px;border-radius:8px;font-size:16px;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:all .3s ease}.btn:hover{background:#000c;border-color:#fff9}