*{box-sizing:border-box;margin:0;padding:0}html,body,#app{width:100%;height:100%;overflow:hidden;background:#9ec8ef;font-family:PingFang SC,Noto Sans SC,Microsoft YaHei,system-ui,sans-serif;color:#102038;-webkit-user-select:none;user-select:none}#c{display:block;width:100%;height:100%;touch-action:none}#hud{pointer-events:none}#hud button{pointer-events:auto;cursor:pointer}#top-left{position:absolute;top:18px;left:22px;display:flex;flex-direction:column;gap:10px;max-width:320px}#title{font-size:42px;font-weight:800;letter-spacing:.04em;color:#0b1a2e;text-shadow:0 2px 0 rgba(255,255,255,.35)}#bubble{background:#fff;border-radius:18px;padding:12px 16px;font-size:15px;font-weight:600;line-height:1.35;box-shadow:0 8px 24px #1020382e;position:relative}#bubble:after{content:"";position:absolute;left:22px;top:-8px;border:8px solid transparent;border-bottom-color:#fff;border-top:0}#bubble .en{font-size:12px;font-weight:500;color:#5a6b82}#beat{position:absolute;top:18px;left:50%;transform:translate(-50%);background:#1d3557;color:#fff;border-radius:14px;padding:8px 18px;font-size:13px;font-weight:700;letter-spacing:.06em;box-shadow:0 6px 18px #10203840}#beat span{color:#ffe066;margin-left:6px}#layer,#score{position:absolute;top:18px;right:22px;background:#1d3557;color:#fff;border-radius:14px;padding:10px 16px;font-size:18px;font-weight:700;box-shadow:0 6px 18px #10203840;min-width:84px;text-align:center}#layer span,#score span{color:#ffe066}#score{top:72px;font-size:15px}#actions{position:absolute;top:160px;left:22px;display:flex;flex-direction:column;gap:10px}#actions button{border:none;border-radius:16px;padding:12px 20px;min-width:132px;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 8px 20px #10203833;transition:transform .12s ease,filter .12s ease}#actions button:hover{transform:translateY(-1px);filter:brightness(1.05)}#actions button:active{transform:translateY(1px)}#btn-place{background:#2ecc71;color:#fff}#btn-undo{background:#e74c3c;color:#fff}#btn-rotate{background:#3a7bd5;color:#fff}#btn-restart,#actions .ghost{background:#1d35578c;color:#fff;font-size:14px;min-width:132px}#actions .icon{width:22px;height:22px;border-radius:50%;background:#ffffff40;display:inline-flex;align-items:center;justify-content:center;font-size:14px}#tag{position:absolute;bottom:128px;left:50%;transform:translate(-50%);background:#1d3557b8;color:#fff;border-radius:999px;padding:8px 18px;font-size:13px;font-weight:600;letter-spacing:.08em;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}#inventory{position:absolute;bottom:36px;left:50%;transform:translate(-50%);display:flex;gap:12px;background:#1d3557;border-radius:20px;padding:12px 16px;box-shadow:0 10px 28px #10203847}.inv{width:78px;border:2px solid transparent;border-radius:14px;background:#fff;color:#1d3557;display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 6px 6px;font-size:13px;font-weight:700}.inv.selected{border-color:#ffe066;box-shadow:0 0 0 2px #ffe06673}.inv .thumb{width:56px;height:56px;border-radius:10px;background:#edf3fb}#float-host{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.float-txt{position:absolute;font-size:28px;font-weight:800;color:#e74c3c;text-shadow:0 2px 0 #fff,0 6px 16px rgba(0,0,0,.2);animation:floatUp 1.2s ease-out forwards}@keyframes floatUp{0%{opacity:1;transform:translate(-50%)}to{opacity:0;transform:translate(-50%,-80px)}}#overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0a142473;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}#overlay.hidden{display:none}.panel{background:#fff;border-radius:24px;padding:36px 44px;text-align:center;box-shadow:0 20px 50px #00000040}.collapse{font-size:42px;font-weight:800;color:#c0392b;margin-bottom:12px}.final{font-size:18px;font-weight:600;color:#1d3557;margin-bottom:22px}#btn-again{border:none;background:#2ecc71;color:#fff;border-radius:16px;padding:12px 28px;font-size:18px;font-weight:700;cursor:pointer}#loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#9ec8ef;font-size:22px;font-weight:700;color:#1d3557}#loading.hidden{display:none}#rotate-hint{position:absolute;bottom:8px;left:50%;transform:translate(-50%);font-size:12px;font-weight:600;letter-spacing:.06em;color:#1d3557b8;pointer-events:none}@media(max-width:720px){#title{font-size:30px}#bubble{font-size:13px}#actions{top:140px}#actions button{min-width:110px;font-size:15px;padding:10px 14px}.inv{width:64px;font-size:11px}.inv .thumb{width:44px;height:44px}}