*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{width:100%;height:100%;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:#0f0f1e;color:#fff}#app{width:100%;height:100%;position:relative}#game-canvas{width:100%;height:100%;display:block;position:absolute;top:0;left:0}.overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0f0f1ef2;display:flex;align-items:center;justify-content:center;z-index:10;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:opacity .3s ease,visibility .3s ease}.overlay.hidden{opacity:0;visibility:hidden}.menu,.tutorial{text-align:center;padding:2rem;max-width:90%;width:400px}.game-title{font-size:3rem;font-weight:900;letter-spacing:.2rem;margin-bottom:1rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.version-info{font-size:.9rem;color:#9ca3af;margin-bottom:2rem;text-align:center;letter-spacing:.05rem}.menu-btn{display:block;width:100%;padding:1rem 2rem;margin:.75rem 0;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:50px;color:#fff;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.menu-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:#fff3;transition:left .3s ease}.menu-btn:active{transform:scale(.95)}.menu-btn:hover:before{left:100%}.credits{margin-top:2rem;font-size:.9rem;opacity:.7}.tutorial h2{font-size:2rem;margin-bottom:2rem;color:#667eea}.tutorial-content{margin:2rem 0}.gesture-demo{display:flex;align-items:center;justify-content:center;margin:1.5rem 0;gap:1rem}.gesture-icon{width:60px;height:60px;background:#667eea;border-radius:12px;position:relative;flex-shrink:0}.gesture-icon:after{content:"";position:absolute;width:40%;height:40%;background:#fff;border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%)}.swipe-left:after{animation:swipeLeft 1.5s ease-in-out infinite}.swipe-up:after{animation:swipeUp 1.5s ease-in-out infinite}.swipe-down:after{animation:swipeDown 1.5s ease-in-out infinite}.tap:after{animation:tap 1.5s ease-in-out infinite}@keyframes swipeLeft{0%,to{transform:translate(-50%,-50%)}50%{transform:translate(-80%,-50%)}}@keyframes swipeUp{0%,to{transform:translate(-50%,-50%)}50%{transform:translate(-50%,-80%)}}@keyframes swipeDown{0%,to{transform:translate(-50%,-50%)}50%{transform:translate(-50%,-20%)}}@keyframes tap{0%,to{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(.8)}}.gesture-demo p{font-size:1rem;color:#fff;opacity:.9}@media (max-width: 480px){.game-title{font-size:2.5rem}.menu-btn{font-size:1rem;padding:.875rem 1.75rem}.gesture-icon{width:50px;height:50px}}@media (max-height: 600px){.game-title{font-size:2rem;margin-bottom:1rem}.menu-btn{margin:.5rem 0;padding:.75rem 1.5rem}.tutorial h2{font-size:1.5rem;margin-bottom:1rem}.gesture-demo{margin:1rem 0}}.loading{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:1.2rem;opacity:.7}body{overscroll-behavior-y:none}body{position:fixed;width:100%;height:100%}