*{box-sizing:border-box}html,body{margin:0;padding:0;background:linear-gradient(180deg,#9fd5ff 0%,#dff1ff 45%,#eef2da 100%);font-family:Arial,sans-serif;overflow:hidden}#game-shell{width:100vw;height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative}#game-container{width:100vw;height:100vh}canvas{display:block;margin:0 auto;image-rendering:pixelated;image-rendering:crisp-edges;filter:drop-shadow(0 14px 26px rgba(0,0,0,.18))}#mobile-controls{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);display:none;gap:12px;z-index:50}#mobile-controls button{width:72px;height:72px;border:none;border-radius:18px;background:linear-gradient(180deg,#2d6a4f,#1f513c);color:#fff;font-size:28px;font-weight:700;box-shadow:0 10px 20px rgba(0,0,0,.18)}#mobile-controls button:active{transform:translateY(2px)}@media (max-width: 900px){#mobile-controls{display:flex}}