*{margin:0;padding:0;box-sizing:border-box}html,body{width:100vw;height:100vh;background-color:#000;color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:4vw;overflow:hidden;-webkit-user-select:none;user-select:none}#app{width:100vw;height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0}h1{font-size:6vw;color:#fe5f00;margin-bottom:3vw}p{font-size:4vw;text-align:center;line-height:1.5}button,.touchable{min-width:44px;min-height:44px;padding:3vw 5vw;font-size:4vw;background-color:#fe5f00;color:#000;border:none;border-radius:2vw;cursor:pointer;-webkit-tap-highlight-color:transparent}button:active,.touchable:active{opacity:.8}.demo-box{background-color:#222;border:1px solid #FE5F00;border-radius:2vw;padding:4vw;margin-top:4vw}#gameContainer{position:relative;width:100vw;height:100vh}#gameCanvas{display:block;width:100vw;height:100vh;background:linear-gradient(to bottom,#87ceeb,#98fb98)}#gameUI{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}#score{position:absolute;top:5vw;left:50%;transform:translate(-50%);font-size:8vw;font-weight:700;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.8);pointer-events:none}#highScore{position:absolute;top:5vw;right:5vw;font-size:4vw;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.8);pointer-events:none}#gameOver{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000e6;border:2px solid #FE5F00;border-radius:4vw;padding:8vw;text-align:center;pointer-events:auto}#gameOver h2{font-size:7vw;color:#fe5f00;margin-bottom:3vw}#gameOver p{font-size:4vw;margin-bottom:2vw}#startScreen{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#000c;border:2px solid #FE5F00;border-radius:4vw;padding:8vw;text-align:center;pointer-events:auto}#startScreen h1{font-size:8vw;color:#fe5f00;margin-bottom:4vw}#startScreen p{font-size:4vw;margin-bottom:2vw}.hidden{display:none!important}