*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{font-family:'Microsoft YaHei','Courier New',sans-serif;background:linear-gradient(135deg,#0a0a23,#1a1a4e,#2d1b69);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(0,255,136,.5)}
.score-board{display:flex;justify-content:center;gap:6px;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 12px;border-radius:8px;min-width:58px}
.score-item .label{color:rgba(255,255,255,.6);font-size:10px}
.score-item .value{color:#00ff88;font-size:16px;font-weight:bold;font-family:'Courier New',monospace}
.canvas-wrapper{position:relative;border-radius:12px;overflow:hidden;box-shadow:0 0 30px rgba(0,255,136,.2);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,.85);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(0,255,136,.5)}
.overlay .instructions{color:rgba(255,255,255,.7);margin-bottom:6px;font-size:14px}
.overlay .instructions.warning{color:#ff6b6b}
.overlay p{margin-bottom:8px;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,#00ff88,#00b894);color:#000}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(0,255,136,.5)}
.game-tip{text-align:center;color:rgba(255,255,255,.4);font-size:12px;margin-top:10px;padding:8px;background:rgba(255,255,255,.05);border-radius:6px}
@media(max-width:380px){.score-item{min-width:48px;padding:4px 8px}.score-item .value{font-size:14px}}