*{box-sizing:border-box}html,body,#root{width:100%;height:100%;margin:0;padding:0;overflow:hidden;touch-action:none}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}canvas{display:block;touch-action:none}@media (max-width: 768px){body{-webkit-overflow-scrolling:touch}button{min-height:44px;min-width:44px}}@media (pointer: coarse){button,canvas{touch-action:manipulation}}@media (max-width: 600px){.welcome-overlay{padding:20px!important}.welcome-overlay h1{font-size:1.8em!important}.welcome-overlay div{font-size:1em!important;padding:20px!important}}