:root{
  --bg:#12141a; --bg2:#191c24; --panel:#1e222c; --panel2:#252a36;
  --line:#2e3542; --text:#e7eaf0; --muted:#9aa3b2; --accent:#5adcf0;
  --gold:#fadc3c; --good:#5ac878; --bad:#e0524d;
  --chip:#2a3040;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;}
button,select,input{font-family:inherit}
#topbar{display:flex;justify-content:space-between;align-items:center;
  padding:10px 18px;background:linear-gradient(180deg,#1b1f29,#151821);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:12px}
.logo{font-size:30px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.5))}
.brandtext h1{font-size:17px;margin:0;letter-spacing:.3px}
.brandtext .sub{margin:2px 0 0;font-size:12px;color:var(--muted)}
.topctrl{display:flex;align-items:center;gap:12px}
.topctrl label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
select{background:var(--chip);color:var(--text);border:1px solid var(--line);
  border-radius:7px;padding:5px 9px;font-size:13px}
.badge{font-size:12px;background:var(--chip);border:1px solid var(--line);
  color:var(--muted);padding:4px 9px;border-radius:20px}
button{cursor:pointer;border-radius:8px;border:1px solid var(--line);
  background:var(--panel2);color:var(--text);padding:6px 12px;font-size:13px}
button:hover{border-color:#3d4759;background:#2c3341}
button.ghost{background:transparent}
#layout{display:flex;gap:16px;padding:16px;align-items:flex-start;
  max-width:1500px;margin:0 auto}
#leftCol{flex:0 0 600px;max-width:600px}
#rightCol{flex:1 1 auto;min-width:540px}
#hud{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.huditem{background:var(--panel);border:1px solid var(--line);border-radius:9px;
  padding:6px 11px;display:flex;align-items:center;gap:7px;font-size:12.5px}
.huditem .k{color:var(--muted);font-size:12px}
.huditem .v{font-weight:600;font-variant-numeric:tabular-nums}
.huditem.nextfruits{gap:6px}
.fruitdot{width:14px;height:14px;border-radius:50%;display:inline-block;
  border:1px solid rgba(255,255,255,.35)}
.fname{font-size:12px;color:var(--text)}
#canvasWrap{position:relative;background:radial-gradient(120% 80% at 50% 0%,#1a1e28,#111319);
  border:1px solid var(--line);border-radius:14px;padding:8px;display:flex;justify-content:center}
#board{border-radius:10px;max-width:100%;height:auto;display:block}
#overlayToggles{position:absolute;top:14px;right:14px;display:flex;flex-direction:column;
  gap:4px;background:rgba(18,20,26,.82);border:1px solid var(--line);border-radius:9px;padding:8px 10px}
#overlayToggles label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:5px;cursor:pointer}
#playback{display:flex;align-items:center;gap:9px;margin-top:11px;flex-wrap:wrap}
#playback input[type=range]{flex:1 1 200px;min-width:160px}
#frameLabel{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:78px;text-align:right}
#decisionNav{display:flex;align-items:center;gap:10px;margin-top:9px}
#playBar{display:flex;align-items:center;gap:12px;margin-top:9px;
  background:linear-gradient(90deg,rgba(90,220,240,.10),rgba(90,220,240,.03));
  border:1px solid rgba(90,220,240,.35);border-radius:10px;padding:8px 12px}
#playHint{font-size:12px;color:var(--accent);flex:1 1 auto}
#playBar{flex-wrap:wrap}
#playBar label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
#playBar .liveonly{display:flex;align-items:center;gap:10px}
#playHint{flex:1 1 100%}
#playGameSelect{max-width:260px;flex:1 1 200px}
#board{cursor:crosshair}
#decisionNav label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
#decisionHint{font-size:12px;color:var(--muted)}
#curveWrap{margin-top:12px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:8px}
#curve{width:100%;height:auto;display:block}
#arenaWrap{margin-top:12px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:8px}
#arena{width:100%;height:auto;display:block}
.arenaHead{font-size:12px;color:var(--muted);margin-bottom:4px}
#agentCard{background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:12px}
#agentTitle{font-size:15px;font-weight:600}
#agentMeta{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.5}
#tabs{display:flex;gap:6px;margin-bottom:10px}
.tab{flex:1;background:var(--panel);border:1px solid var(--line);color:var(--muted);
  padding:8px 6px;font-size:12.5px;border-radius:9px}
.tab.active{background:var(--panel2);color:var(--text);border-color:#3d4759;
  box-shadow:inset 0 0 0 1px rgba(90,220,240,.15)}
.panel{display:none;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:12px}
.panel.active{display:block}
.panelhint{font-size:12px;color:var(--muted);line-height:1.55;margin-bottom:9px}
.panelhint .qbad{color:var(--bad)} .panelhint .qgood{color:var(--good)}
.panel svg{width:100%;height:auto;display:block;background:#151821;border-radius:9px}
.statline{font-size:12px;color:var(--muted);margin-top:9px;line-height:1.6;
  font-variant-numeric:tabular-nums}
.statline b{color:var(--text)}
/* drawer */
.drawer{position:fixed;inset:0;background:rgba(8,9,13,.6);display:none;
  justify-content:flex-end;z-index:50}
.drawer.open{display:flex}
.drawerInner{width:min(680px,92vw);height:100%;overflow-y:auto;background:var(--bg2);
  border-left:1px solid var(--line);padding:22px 26px;position:relative}
.drawerInner h2{margin:0 0 12px;font-size:18px}
.closebtn{position:absolute;top:16px;right:18px}
#infoContent{font-size:13px;line-height:1.7;color:#cdd3de}
#infoContent h3{font-size:14px;margin:18px 0 6px;color:var(--text)}
#infoContent code{background:var(--chip);padding:1px 6px;border-radius:5px;font-size:12px}
#infoContent table{border-collapse:collapse;width:100%;margin:8px 0;font-size:12px}
#infoContent th,#infoContent td{border:1px solid var(--line);padding:5px 8px;text-align:left}
#infoContent th{background:var(--panel2);color:var(--muted)}
#infoContent .swatch{width:12px;height:12px;border-radius:50%;display:inline-block;vertical-align:middle;margin-right:6px}
#infoContent .benchnote{font-size:12px;color:#8f97a6}
.benchline{color:#7ad7ff;font-size:12px}
#tooltip{position:fixed;pointer-events:none;background:#0e1015;border:1px solid var(--line);
  border-radius:8px;padding:7px 10px;font-size:12px;color:var(--text);z-index:80;
  display:none;max-width:280px;line-height:1.5}
#tooltip .tt-k{color:var(--muted)}
#loading{position:fixed;inset:0;display:none;align-items:center;justify-content:center;
  background:rgba(18,20,26,.9);z-index:90;font-size:15px;color:var(--muted)}
#loading.show{display:flex}
@media(max-width:1180px){#layout{flex-direction:column}#leftCol{flex:1 1 auto;max-width:100%;width:100%}#rightCol{min-width:0;width:100%}}

a{color:var(--accent);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
::selection{background:#285960;color:#fff}
button:disabled{cursor:default}
#traceSummary{max-width:1500px;margin:0 auto;padding:12px 18px 0;display:flex;gap:14px;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
#traceSummary p{margin:0;line-height:1.65}#traceSummary a{flex-shrink:0}
.navlink{font-size:12px;white-space:nowrap}
#gameSelect{max-width:380px}
@media(max-width:760px){
  #topbar{position:static;flex-direction:column;align-items:stretch;gap:12px;padding:14px}
  .brandtext h1{font-size:16px}.brandtext .sub{font-size:12px;line-height:1.5}
  .topctrl{flex-wrap:wrap;gap:8px}.topctrl label{flex:1 1 100%;min-width:0}
  #gameSelect{width:100%;min-width:0;max-width:100%}
  #traceSummary{display:block;padding:12px 14px 0}#traceSummary a{display:inline-block;margin-top:6px}
  #layout{padding:12px;gap:14px}#leftCol,#rightCol{min-width:0}
  #decisionNav{flex-wrap:wrap}#stepSelect{max-width:100%;min-width:0}#decisionNav label{min-width:0;max-width:100%}
  #overlayToggles{top:10px;right:10px;padding:6px}.badge{font-size:12px}
  #tabs{flex-wrap:wrap}.tab{min-height:42px}button{min-height:36px}
}

@media(max-width:760px){.brandtext .sub,#agentMeta,.panelhint,.statline,.arenaHead{font-size:13px}}