*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(180deg,#1a1a2e,#16213e,#1a1a2e);min-height:100vh;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;font-family:Segoe UI,system-ui,sans-serif;overflow-x:hidden;overflow-y:auto}#game-container{width:100%;max-width:420px;height:100vh;min-height:100vh;flex-shrink:0;position:relative;background:#111;border-radius:12px;overflow:hidden;box-shadow:0 0 60px #000c,0 0 100px #4ecdc426}canvas{display:block;width:100%;height:100%}.back-home{position:absolute;top:20px;left:20px;z-index:9999;background:#ff6b6b;color:#fff;padding:10px 15px;border-radius:50px;text-decoration:none;font-family:sans-serif;font-weight:700;border:2px solid #1E1B2E;box-shadow:3px 3px #1e1b2e;transition:transform .1s}.back-home:active{transform:translate(2px,2px);box-shadow:1px 1px #1e1b2e}