*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{font-family:'Microsoft YaHei',sans-serif;background:linear-gradient(135deg,#0f0c29,#302b63,#24243e);min-height:100vh;display:flex;justify-content:center;align-items:flex-start;padding:12px}
.container{max-width:480px;width:100%}
.game-header{text-align:center;margin-bottom:12px}
.game-header h1{color:#fff;font-size:1.4rem;margin-bottom:8px;text-shadow:0 0 12px rgba(102,126,234,.6)}
.score-board{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.score-item{display:flex;flex-direction:column;align-items:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);padding:5px 14px;border-radius:8px;min-width:64px}
.score-item .label{color:rgba(255,255,255,.6);font-size:10px}
.score-item .value{color:#fff;font-size:17px;font-weight:bold}
.canvas-wrapper{position:relative;border-radius:12px;overflow:hidden;box-shadow:0 0 30px rgba(102,126,234,.3);border:2px solid rgba(255,255,255,.1)}
canvas{display:block;width:100%;height:auto;background:#000}
.overlay{display:none;position:absolute;inset:0;background:rgba(0,0,0,.8);justify-content:center;align-items:center;flex-direction:column;color:#fff;text-align:center;padding:20px;z-index:10}
.overlay.show{display:flex}
.overlay h2{font-size:1.6rem;margin-bottom:12px;text-shadow:0 0 10px rgba(102,126,234,.5)}
.overlay .instructions{color:rgba(255,255,255,.7);margin-bottom:6px;font-size:14px}
.overlay p{margin-bottom:14px;font-size:15px}
.btn{padding:12px 32px;border:none;border-radius:10px;font-size:16px;font-weight:bold;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(102,126,234,.5)}
.mobile-controls{display:none;justify-content:center;gap:12px;margin-top:12px}
.ctrl-btn{padding:16px 24px;border:none;border-radius:12px;font-size:18px;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);cursor:pointer;user-select:none;transition:transform .1s}
.ctrl-btn:active{transform:scale(.92)}
.fire-btn{background:linear-gradient(135deg,#f5576c,#ff6b6b);flex:1.5}
.game-tip{text-align:center;color:rgba(255,255,255,.4);font-size:12px;margin-top:10px;padding:6px;background:rgba(255,255,255,.05);border-radius:6px}
@media(max-width:600px){.desktop-only{display:none}.mobile-only{display:inline}.mobile-controls{display:flex}.game-tip .desktop-only{display:none}}
@media(min-width:601px){.desktop-only{display:inline}.mobile-only{display:none}.mobile-controls{display:none}}
@media(max-width:380px){.score-item{min-width:52px;padding:4px 8px}.score-item .value{font-size:14px}}