*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{width:100%;height:100%;overflow:hidden;background:#000;touch-action:none;user-select:none;-webkit-user-select:none}#game{display:block;width:100%;height:100%}#hud{position:fixed;top:0;left:0;width:100%;pointer-events:none;z-index:10;padding:12px 16px;display:flex;justify-content:space-between;align-items:flex-start}#score-display{display:flex;flex-direction:column;align-items:flex-start}#score-label{font-family:'Courier New',monospace;font-size:11px;color:rgba(255,255,255,0.5);letter-spacing:3px;text-transform:uppercase}#score-value{font-family:'Courier New',monospace;font-size:36px;color:#fff;text-shadow:0 0 20px rgba(100,200,255,0.8),0 0 40px rgba(100,200,255,0.4);transition:transform 0.1s}#combo-display{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none;z-index:15}#combo-value{font-family:'Courier New',monospace;font-size:48px;color:#fff;text-shadow:0 0 30px rgba(255,200,50,0.9),0 0 60px rgba(255,150,0,0.5);opacity:0;transition:opacity 0.2s,transform 0.2s}#energy-bar-container{width:150px;height:8px;background:rgba(255,255,255,0.1);border-radius:4px;overflow:hidden;margin-top:8px}#energy-bar{width:80%;height:100%;background:linear-gradient(90deg,#00ffcc,#00aaff);border-radius:4px;transition:width 0.3s;box-shadow:0 0 10px rgba(0,255,200,0.5)}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;z-index:100;background:rgba(0,0,0,0.85);backdrop-filter:blur(10px)}.title-content{text-align:center;color:#fff;font-family:'Courier New',monospace}.title-content h1{font-size:clamp(36px,8vw,72px);letter-spacing:12px;text-shadow:0 0 30px rgba(100,200,255,0.8),0 0 60px rgba(100,200,255,0.4);margin-bottom:8px}.subtitle{font-size:clamp(10px,2vw,14px);color:rgba(255,255,255,0.6);letter-spacing:4px;margin-bottom:32px}.instructions{text-align:left;margin:0 auto 32px;max-width:280px}.instruction-row{font-size:13px;color:rgba(255,255,255,0.7);margin-bottom:10px;display:flex;align-items:center;gap:12px}.key{background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);padding:3px 10px;border-radius:4px;font-size:11px;letter-spacing:2px;min-width:60px;text-align:center}.danger{color:#ff4466}button{background:transparent;border:2px solid rgba(255,255,255,0.6);color:#fff;font-family:'Courier New',monospace;font-size:16px;letter-spacing:4px;padding:14px 32px;cursor:pointer;transition:all 0.3s;border-radius:4px;pointer-events:auto}button:hover,button:active{background:rgba(255,255,255,0.1);border-color:#fff;text-shadow:0 0 10px rgba(255,255,255,0.5)}.final-score{display:flex;flex-direction:column;align-items:center;margin-bottom:16px}.final-score span:first-child{font-size:11px;color:rgba(255,255,255,0.5);letter-spacing:3px}.final-score span:last-child{font-size:42px;color:#fff;text-shadow:0 0 20px rgba(255,200,50,0.8)}#tutorial-hint{position:fixed;bottom:15%;left:50%;transform:translateX(-50%);background:rgba(0,0,0,0.6);border:1px solid rgba(255,255,255,0.3);padding:10px 20px;border-radius:20px;z-index:20;pointer-events:none}#tutorial-hint span{font-family:'Courier New',monospace;font-size:13px;color:rgba(255,255,255,0.8);letter-spacing:2px}