:root{--bg: #09090a;--panel: #0c0c0e;--line: rgba(102, 102, 111, .35);--c1: #ffffff;--c2: #66666f;--accent: #d94a38}*{margin:0;padding:0;box-sizing:border-box}html{-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}html,body{height:100%;overflow:hidden;background:var(--bg);font-family:Microsoft YaHei,PingFang SC,system-ui,sans-serif;color:var(--c2)}#app{display:flex;width:100%;height:100%}#stage{position:relative;flex:1;min-width:0}#gl{display:block;width:100%;height:100%;touch-action:none}#hud{position:absolute;top:18px;left:22px;pointer-events:none;-webkit-user-select:none;user-select:none}#hud .title{font-family:ui-monospace,Cascadia Mono,Consolas,monospace;font-size:11px;letter-spacing:.42em;color:#ffffffd9}#backend{margin-top:8px;font-family:ui-monospace,Consolas,monospace;font-size:9px;letter-spacing:.3em;color:var(--c2)}#hud .subtitle{margin-top:4px;font-family:ui-monospace,Consolas,monospace;font-size:9px;letter-spacing:.3em;color:#d27864bf}#check-alert{position:absolute;top:28px;left:50%;z-index:28;display:flex;align-items:center;gap:12px;min-width:300px;padding:11px 18px;transform:translate(-50%,-18px) scale(.96);border:1px solid rgba(255,96,74,.85);background:#460c0ae6;box-shadow:0 0 0 1px #d94a382e,0 10px 34px #d94a3857;color:#fff;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,transform .2s ease,visibility .2s}#check-alert.active{opacity:1;visibility:visible;transform:translate(-50%) scale(1);animation:checkAlertPulse 1.05s ease-in-out infinite}#check-alert.opponent{border-color:#ffffff9e;background:#1c1c20e6;box-shadow:0 10px 30px #00000061;animation-duration:1.8s}#check-alert .check-en{font-family:ui-monospace,Consolas,monospace;font-size:11px;font-weight:700;letter-spacing:.28em;color:#ff8a78}#check-alert strong{font-size:17px;letter-spacing:.18em;white-space:nowrap}#check-alert #check-alert-detail{margin-left:auto;font-size:11px;letter-spacing:.12em;color:#ffffffad;white-space:nowrap}@keyframes checkAlertPulse{0%,to{box-shadow:0 0 0 1px #d94a3833,0 10px 32px #d94a3847}50%{box-shadow:0 0 0 5px #d94a3814,0 10px 46px #d94a388c}}#btn-sound{position:absolute;left:22px;bottom:14px;z-index:30;appearance:none;width:36px;height:36px;display:flex;align-items:center;justify-content:center;padding:0;background:#0c0c0ecc;border:1px solid var(--line);color:var(--c1);cursor:pointer;-webkit-user-select:none;user-select:none;transition:border-color .2s,background .2s}#btn-sound:hover{border-color:#fff6;background:#18181ce6}#btn-sound:active{background:#ffffff24}#btn-sound svg{width:22px;height:22px;overflow:hidden}#btn-sound svg path{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:opacity .25s ease}#btn-sound .snd-wave{opacity:0}#btn-sound .snd-flat{opacity:1}#btn-sound.on .snd-wave{opacity:1;animation:snd-wave 1.5s linear infinite}#btn-sound.on .snd-flat{opacity:0}@keyframes snd-wave{0%{transform:translate(0)}to{transform:translate(-10px)}}#hint{position:absolute;left:68px;bottom:24px;font-family:ui-monospace,Consolas,monospace;font-size:9px;letter-spacing:.28em;color:#66666fbf;pointer-events:none;-webkit-user-select:none;user-select:none}#btn-menu{display:none;position:absolute;top:14px;right:14px;z-index:30;appearance:none;width:42px;height:42px;background:#0c0c0ecc;border:1px solid var(--line);color:var(--c1);font-size:18px;line-height:1;cursor:pointer;-webkit-user-select:none;user-select:none}#backdrop{display:none;position:fixed;inset:0;z-index:39;background:#0000008c;opacity:0;pointer-events:none;transition:opacity .3s ease}#backdrop.show{display:block;opacity:1;pointer-events:auto}#game-over{position:absolute;left:50%;top:50%;z-index:27;display:flex;flex-direction:column;align-items:center;gap:10px;padding:22px 46px;transform:translate(-50%,-50%) scale(.96);border:1px solid rgba(255,255,255,.4);background:#0a0a0ce0;color:#fff;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s ease,transform .3s ease,visibility .3s}#game-over.active{opacity:1;visibility:visible;transform:translate(-50%,-50%) scale(1)}#game-over strong{font-size:22px;font-weight:600;letter-spacing:.3em;white-space:nowrap}#game-over span{font-size:11px;letter-spacing:.18em;color:#ffffffa6;white-space:nowrap}#game-over.lost{border-color:var(--accent)}#game-over-share{display:flex;flex-direction:column;align-items:center;gap:9px;margin-top:4px;padding-top:12px;border-top:1px solid rgba(255,255,255,.16)}#game-over-share[hidden]{display:none}#game-over-share>div{display:flex;gap:8px}#game-over-share button{appearance:none;padding:7px 11px;border:1px solid rgba(255,255,255,.32);background:transparent;color:#fff;font:9px ui-monospace,Consolas,monospace;letter-spacing:.12em;cursor:pointer}#game-over-share button:hover{border-color:#ffffffbf}#game-over.lost strong{color:#ff8a78}#btn-stage-replay{display:none;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:25;flex-direction:column;align-items:center;gap:4px;appearance:none;padding:16px 34px;background:#0c0c0ed1;border:1px solid rgba(255,255,255,.5);color:#fff;cursor:pointer;-webkit-user-select:none;user-select:none;transition:border-color .2s,background .2s,transform .14s;animation:replayPulse 2.2s ease-in-out infinite}#btn-stage-replay:hover{border-color:#fff;background:#1e1e24eb}#btn-stage-replay:active{transform:translate(-50%,-50%) scale(.97)}#btn-stage-replay .sr-big{font-family:ui-monospace,Consolas,monospace;font-size:15px;letter-spacing:.34em}#btn-stage-replay .sr-small{font-family:Microsoft YaHei,PingFang SC,sans-serif;font-size:11px;letter-spacing:.3em;color:#ffffffb3}#btn-undo{position:absolute;right:22px;bottom:16px;z-index:30;appearance:none;min-width:94px;height:42px;display:flex;align-items:center;justify-content:center;gap:9px;padding:0 15px;background:#0c0c0ed6;border:1px solid rgba(255,255,255,.34);color:var(--c1);cursor:pointer;transition:border-color .2s,background .2s,opacity .2s}#btn-undo span{font-family:ui-monospace,Consolas,monospace;font-size:10px;letter-spacing:.2em}#btn-undo small{font:11px Microsoft YaHei,PingFang SC,sans-serif;letter-spacing:.16em;color:#ffffffb8}#btn-undo:hover:not(:disabled){border-color:#fffc;background:#1e1e24f0}#btn-undo:disabled{opacity:.3;cursor:default}@keyframes replayPulse{0%,to{box-shadow:0 0 #d94a3800}50%{box-shadow:0 0 22px #d94a3847}}@media(max-width:768px){#btn-stage-replay{padding:14px 28px}#btn-stage-replay .sr-big{font-size:13px}#check-alert{top:68px;min-width:0;width:calc(100% - 32px);max-width:390px;justify-content:center;gap:8px;padding:10px 12px}#check-alert strong{font-size:15px}#check-alert #check-alert-detail{margin-left:0;font-size:10px}#btn-undo{right:16px;bottom:16px;min-width:88px;height:42px;padding:0 12px}}#loading{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;background:var(--bg);transition:opacity .6s ease}#loading.hide{opacity:0;pointer-events:none}#loading .t{font-family:ui-monospace,Consolas,monospace;font-size:12px;letter-spacing:.5em;color:#ffffffe6}#loading-bar-track{width:220px;height:1px;background:#66666f4d}#loading-bar{width:0%;height:1px;background:#fff;transition:width .25s ease}#side{width:400px;min-width:340px;height:100%;display:flex;flex-direction:column;background:var(--panel);border-left:1px solid rgba(255,255,255,.06)}#side-canvas{display:block;width:100%;flex:1;min-height:0;touch-action:none}#duel-panel{padding:14px 18px 12px;border-bottom:1px solid rgba(255,255,255,.06);background:#08080ab8}.duel-heading,.duel-code,.duel-actions{display:flex;align-items:center}.duel-heading{gap:10px;margin-bottom:10px}.duel-heading span{font:10px ui-monospace,Consolas,monospace;letter-spacing:.26em;color:#fff}.duel-heading small{font-size:10px;letter-spacing:.2em;color:var(--c2)}#duel-panel button{height:32px;padding:0 10px;border:1px solid var(--line);background:transparent;color:var(--c2);font:9px ui-monospace,Consolas,monospace;letter-spacing:.12em;cursor:pointer}#duel-panel button:hover:not(:disabled){color:#fff;border-color:#ffffff8c}#duel-panel button:disabled{opacity:.3;cursor:default}#duel-room{margin-top:11px}.duel-code{justify-content:space-between;margin-bottom:9px}#duel-room-code{font:9px ui-monospace,Consolas,monospace;letter-spacing:.13em;color:var(--c2)}#duel-room-state{font-size:10px;letter-spacing:.12em;color:#fff}.duel-players{display:grid;grid-template-columns:1fr 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#btn-duel-kick{position:absolute;top:3px;right:5px;width:18px;height:18px;padding:0;border:none;color:var(--accent);font-size:14px;line-height:1}#duel-panel #btn-duel-kick:hover:not(:disabled){color:#fff}#duel-chat{position:absolute;left:22px;bottom:64px;z-index:26;display:flex;flex-direction:column;width:280px;background:#0c0c0ed1;border:1px solid var(--line)}#duel-chat[hidden]{display:none}#duel-chat-log{max-height:140px;overflow-y:auto;padding:8px 10px;font-size:11px;line-height:1.7;color:#ffffffd9;word-break:break-all}#duel-chat-log b{margin-right:6px;font-weight:400}#duel-chat-log .chat-r b{color:var(--accent)}#duel-chat-log .chat-b b{color:var(--c2)}#duel-chat-input{border:none;border-top:1px solid var(--line);background:transparent;padding:8px 10px;color:#fff;font-size:11px;outline:none}#duel-chat-input::placeholder{color:var(--c2)}@media(max-width:768px){#duel-chat{left:16px;bottom:70px;width:min(70vw,280px)}}#new-game-modal{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:20px;background:#000000b8;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}#new-game-modal[hidden]{display:none}.new-game-card{width:min(460px,100%);padding:24px;border:1px solid rgba(255,255,255,.18);background:#0c0c0efa;box-shadow:0 24px 80px #0009}.new-game-title{display:flex;align-items:baseline;gap:12px;margin-bottom:20px}.new-game-title span{color:#fff;font:14px ui-monospace,Consolas,monospace;letter-spacing:.32em}.new-game-title small{color:var(--c2);font-size:11px;letter-spacing:.2em}.new-game-modes{display:grid;grid-template-columns:1fr 1fr;gap:10px}.new-game-modes button{min-height:66px;border:1px solid var(--line);background:transparent;color:var(--c2);font:10px 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code{color:#ffffffc2}.new-game-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.new-game-actions button{min-width:130px;height:38px;border:1px solid var(--line);background:transparent;color:var(--c2);font:10px ui-monospace,Consolas,monospace;letter-spacing:.15em;cursor:pointer}.new-game-actions button:hover:not(:disabled){color:#fff;border-color:#ffffffa6}.new-game-actions #btn-new-confirm{color:#fff;border-color:#ffffff8c}.new-game-actions button:disabled{opacity:.35;cursor:default}#controls{display:flex;flex-direction:column;gap:8px;padding:12px 18px 16px;border-top:1px solid rgba(255,255,255,.06)}.controls-row{display:flex;gap:10px}#controls button{flex:1;appearance:none;background:transparent;border:1px solid var(--line);color:var(--c2);font-family:ui-monospace,Consolas,monospace;font-size:10px;letter-spacing:.2em;padding:9px 0;cursor:pointer;transition:color .2s,border-color .2s}#controls button:hover:not(:disabled){color:var(--c1);border-color:#ffffff8c}#controls button:disabled{opacity:.35;cursor:default}#btn-replay.live{color:#fff;border-color:#ffffffb3;animation:livePulse 1.6s ease infinite}@keyframes livePulse{0%,to{box-shadow:0 0 #ffffff1f}50%{box-shadow:0 0 14px #ffffff1f}}@media(max-width:900px){#side{width:320px;min-width:280px}}@media(max-width:768px){#btn-menu{display:block}#hint{display:none}#btn-sound{left:16px;bottom:16px;width:42px;height:42px}#side{position:fixed;top:0;right:0;height:100%;width:min(86vw,360px);min-width:0;z-index:40;transform:translate(105%);transition:transform .3s cubic-bezier(.22,.8,.3,1);box-shadow:-12px 0 40px #0009}#side.open{transform:translate(0)}}