*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;user-select:none}
html,body{width:100%;height:100%;overflow:hidden;font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:#0f172a}
#app{width:100%;height:100%;position:relative;overflow:hidden}
.page{position:absolute;top:0;left:0;width:100%;height:100%;display:none;flex-direction:column;align-items:center;justify-content:center}
.page.active{display:flex}

#page-start{background:linear-gradient(180deg,#0f172a 0%,#1e293b 30%,#1e3a5f 60%,#0f172a 100%);overflow:hidden}
#page-start::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 50% 30%,rgba(59,130,246,0.12),transparent 50%),radial-gradient(circle at 30% 70%,rgba(168,85,247,0.08),transparent 40%);z-index:0}
.start-content{position:relative;z-index:1;text-align:center;padding:20px;max-width:400px;width:90%}
.start-icon{font-size:72px;animation:iconFloat 3s ease-in-out infinite;filter:drop-shadow(0 8px 30px rgba(59,130,246,0.4))}
@keyframes iconFloat{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-10px) scale(1.05)}}
.start-title{font-size:36px;background:linear-gradient(135deg,#3b82f6,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:10px 0 4px;letter-spacing:4px}
.start-sub{font-size:14px;color:rgba(59,130,246,0.5);letter-spacing:8px;margin-bottom:24px}
.start-rules{background:rgba(59,130,246,0.08);border:1px solid rgba(59,130,246,0.2);border-radius:16px;padding:16px;margin-bottom:24px;text-align:left}
.rule-item{display:flex;align-items:center;gap:10px;padding:6px 0;color:rgba(255,255,255,0.8);font-size:14px}
.rule-emoji{font-size:20px;flex-shrink:0;width:28px;text-align:center}
.btn-start{display:block;width:100%;padding:16px;border:none;border-radius:25px;font-size:20px;font-weight:bold;cursor:pointer;background:linear-gradient(135deg,#3b82f6,#a855f7);color:#fff;letter-spacing:4px;box-shadow:0 4px 20px rgba(59,130,246,0.4);transition:transform .15s;margin-bottom:12px}
.btn-start:active{transform:scale(0.95)}
.btn-back{display:block;width:100%;padding:12px;border:1px solid rgba(59,130,246,0.3);border-radius:25px;font-size:14px;cursor:pointer;background:rgba(59,130,246,0.1);color:rgba(255,255,255,0.7);letter-spacing:2px;transition:transform .15s}
.btn-back:active{transform:scale(0.95)}

#page-game{background:#0f172a}
.game-top{width:100%;padding:8px 12px;flex-shrink:0}
.game-info{display:flex;justify-content:space-between;align-items:center;color:#3b82f6;font-size:14px;text-shadow:1px 1px 2px #000}
.game-info .level-name{font-size:16px;letter-spacing:2px}
.game-info .score{color:#fbbf24}
.chain-display{height:24px;text-align:center;font-size:16px;font-weight:bold;color:#f97316;text-shadow:0 0 10px rgba(249,115,22,0.5);margin-top:4px}

.game-board-wrap{flex:1;display:flex;align-items:center;justify-content:center;padding:10px;min-height:0}
.game-board{display:grid;gap:6px;perspective:600px}

.cell{border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:bold;cursor:pointer;position:relative;transition:transform .15s,box-shadow .15s;transform-style:preserve-3d}
.cell:not(.empty){background:linear-gradient(145deg,#1e3a5f,#0f172a);border:2px solid rgba(59,130,246,0.3);box-shadow:0 4px 12px rgba(0,0,0,0.3),inset 0 1px 0 rgba(255,255,255,0.1);color:#e2e8f0;text-shadow:0 1px 3px rgba(0,0,0,0.5)}
.cell:not(.empty):active{transform:scale(0.92)}
.cell.empty{background:rgba(59,130,246,0.05);border:2px dashed rgba(59,130,246,0.15);cursor:default}
.cell.highlight{border-color:#22c55e;box-shadow:0 0 15px rgba(34,197,94,0.4),inset 0 1px 0 rgba(255,255,255,0.1);animation:highlightPulse 0.8s ease-in-out infinite}
@keyframes highlightPulse{0%,100%{box-shadow:0 0 15px rgba(34,197,94,0.4)}50%{box-shadow:0 0 25px rgba(34,197,94,0.7)}}
.cell.eliminating{animation:eliminate .5s ease-out forwards}
@keyframes eliminate{0%{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:0.5}100%{transform:scale(0);opacity:0}}
.cell.chain-elim{animation:chainElim .6s ease-out forwards}
@keyframes chainElim{0%{transform:scale(1);opacity:1;box-shadow:0 0 0 rgba(249,115,22,0)}30%{transform:scale(1.15);box-shadow:0 0 20px rgba(249,115,22,0.5)}100%{transform:scale(0);opacity:0;box-shadow:0 0 30px rgba(249,115,22,0.8)}}
.cell.movable{border-color:rgba(59,130,246,0.6)}
.cell .num{font-size:inherit;line-height:1}

.game-bottom{width:100%;padding:8px 12px;display:flex;justify-content:center;gap:8px;flex-shrink:0;background:linear-gradient(transparent,rgba(15,23,42,0.8))}
.tool-btn{width:48px;height:48px;border-radius:12px;border:2px solid rgba(59,130,246,0.3);background:linear-gradient(135deg,rgba(59,130,246,0.15),rgba(15,23,42,0.8));color:#3b82f6;font-size:18px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;transition:transform .15s}
.tool-btn:active{transform:scale(0.9)}
.tool-btn .tool-label{font-size:8px;margin-top:1px;color:rgba(255,255,255,0.5)}
.tool-btn .tool-count{position:absolute;top:-4px;right:-4px;background:linear-gradient(135deg,#a855f7,#3b82f6);color:#fff;font-size:10px;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:bold}
.tool-btn .ad-badge{position:absolute;bottom:1px;right:1px;background:#f97316;color:#fff;font-size:7px;padding:0 3px;border-radius:3px}
.tool-btn:disabled{opacity:0.4;cursor:default}
.pause-btn{width:48px;height:48px;border-radius:12px;border:2px solid rgba(255,255,255,0.15);background:rgba(15,23,42,0.6);color:#3b82f6;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center}

#page-clear,#page-fail{background:rgba(15,23,42,0.95);backdrop-filter:blur(10px)}
.over-content{text-align:center;padding:20px;max-width:360px;width:90%}
.over-icon{font-size:64px}
.over-title{font-size:32px;margin:8px 0 4px;letter-spacing:4px}
.clear-title{color:#22c55e;text-shadow:0 0 20px rgba(34,197,94,0.5)}
.fail-title{color:#ef4444;text-shadow:0 0 20px rgba(239,68,68,0.5)}
.over-sub{font-size:12px;color:rgba(255,255,255,0.3);letter-spacing:6px;margin-bottom:20px}
.result-row{display:flex;gap:12px;margin-bottom:20px}
.result-item{flex:1;background:rgba(59,130,246,0.1);border:1px solid rgba(59,130,246,0.2);border-radius:12px;padding:10px}
.result-label{font-size:11px;color:rgba(255,255,255,0.5);margin-bottom:4px}
.result-value{font-size:24px;font-weight:bold;color:#3b82f6;text-shadow:0 0 10px rgba(59,130,246,0.5)}
.coin-val{color:#fbbf24;text-shadow:0 0 10px rgba(251,191,36,0.5)}
.btn-restart{display:block;width:100%;padding:14px;border:none;border-radius:25px;font-size:18px;font-weight:bold;cursor:pointer;background:linear-gradient(135deg,#3b82f6,#a855f7);color:#fff;letter-spacing:3px;box-shadow:0 4px 20px rgba(59,130,246,0.4);margin-bottom:12px;transition:transform .15s}
.btn-restart:active{transform:scale(0.95)}

.pause-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(15,23,42,0.85);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;z-index:50;flex-direction:column;gap:16px}
.pause-overlay.active{display:flex}
.pause-title{font-size:32px;color:#3b82f6;text-shadow:0 0 20px rgba(59,130,246,0.5);letter-spacing:6px;margin-bottom:10px}
.pause-btn{padding:14px 40px;border:2px solid rgba(59,130,246,0.4);border-radius:25px;font-size:16px;cursor:pointer;background:linear-gradient(135deg,rgba(59,130,246,0.2),rgba(15,23,42,0.8));color:#3b82f6;letter-spacing:3px;transition:transform .15s;min-width:200px}
.pause-btn:active{transform:scale(0.95)}
.pause-btn.primary{background:linear-gradient(135deg,#3b82f6,#a855f7);color:#fff;border:none;box-shadow:0 4px 20px rgba(59,130,246,0.4)}

@media(max-height:600px){
  .tool-btn{width:42px;height:42px;font-size:16px}
  .game-info{font-size:12px}
}