:root{
  --bg:#0e1116; --bg2:#141a22; --card:#1a212b; --card2:#202936;
  --line:#2a3340; --txt:#e6eaf0; --sub:#8b97a7; --faint:#5d6b7d;
  --accent:#6c8cff; --accent2:#9b6cff; --ok:#37d39b; --warn:#ffb547;
  --danger:#ff6b6b; --red:#d9484a;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:radial-gradient(1100px 560px at 78% -12%,#1b2740 0,transparent 62%),
             radial-gradient(800px 500px at -8% 8%,#241b3a 0,transparent 58%),var(--bg);
  color:var(--txt);min-height:100vh;padding:20px 16px 34px;
}
.app{max-width:1180px;margin:0 auto}
.top{display:flex;align-items:center;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.back{color:var(--sub);text-decoration:none;font-size:13px;padding:7px 12px;border:1px solid var(--line);
      border-radius:9px;white-space:nowrap;transition:.18s}
.back:hover{color:var(--accent);border-color:var(--accent)}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:44px;height:44px;border-radius:12px;flex:0 0 auto;display:flex;align-items:center;
      justify-content:center;font-size:23px;font-weight:800;color:#fff;
      background:linear-gradient(135deg,var(--accent),var(--accent2));
      box-shadow:0 6px 20px rgba(108,140,255,.32)}
.top h1{font-size:21px;letter-spacing:.5px}
.top p{color:var(--sub);font-size:12px;margin-top:3px}
.ver{margin-left:auto;color:var(--faint);font-size:12px;border:1px solid var(--line);
     padding:3px 9px;border-radius:20px}

.layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.board-col{min-width:0}
.status{background:linear-gradient(180deg,rgba(108,140,255,.13),rgba(108,140,255,.04));
  border:1px solid rgba(108,140,255,.28);border-radius:12px;padding:11px 16px;
  font-size:14px;font-weight:600;margin-bottom:14px;min-height:42px;display:flex;align-items:center;gap:9px}
.status.check{border-color:rgba(255,107,107,.5);background:rgba(255,107,107,.10);color:#ffc0c0}
.status.over{border-color:rgba(55,211,155,.5);background:rgba(55,211,155,.10);color:#a8f0d5}
.board-wrap{width:100%;display:flex;justify-content:center;background:rgba(0,0,0,.18);
  border:1px solid var(--line);border-radius:16px;padding:10px}
canvas{display:block;touch-action:manipulation;border-radius:6px;cursor:pointer}
.players{display:flex;align-items:center;justify-content:space-between;margin-top:12px;gap:10px}
.player{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);
  border-radius:11px;padding:9px 14px;font-size:13px;min-width:130px}
.player b{font-weight:600}
.player span:last-child{color:var(--sub)}
.player.active{border-color:var(--accent);box-shadow:0 0 0 3px rgba(108,140,255,.12)}
.dot{width:11px;height:11px;border-radius:50%;flex:0 0 auto}
.dot.red{background:#d9484a;box-shadow:0 0 0 3px rgba(217,72,74,.18)}
.dot.black{background:#39424f;box-shadow:0 0 0 3px rgba(57,66,79,.3);border:1px solid #6b7686}
.vs{color:var(--faint);font-size:12px;letter-spacing:3px;white-space:nowrap}

.panel{display:flex;flex-direction:column;gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:15px;padding:16px}
.card h2{font-size:14px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:6px}
.card h2::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent)}
.mini{font-size:11px;color:var(--faint);font-weight:400;margin-left:auto}
.ai-card{border-color:rgba(108,140,255,.35);background:linear-gradient(180deg,#1a2231,var(--card))}
.seg{display:flex;background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:3px;gap:3px;margin-bottom:12px}
.seg-btn{flex:1;border:0;background:transparent;color:var(--sub);font-size:12.5px;padding:8px 2px;
  border-radius:8px;cursor:pointer;transition:.16s;white-space:nowrap}
.seg-btn:hover{color:var(--txt)}
.seg-btn.active{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:600}
.ctl-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:9px 0;font-size:12.5px;color:var(--sub)}
.ctl-row label{white-space:nowrap}
.ctl-row em{font-style:normal;color:var(--txt);margin-left:4px}
select,input[type=range]{background:var(--bg2);color:var(--txt);border:1px solid var(--line);
  border-radius:8px;padding:6px 9px;font-size:12.5px;outline:none}
select:focus{border-color:var(--accent)}
input[type=range]{padding:0;width:120px;height:5px;accent-color:var(--accent);cursor:pointer}
.btn{border:1px solid var(--line);background:var(--card2);color:var(--txt);border-radius:9px;
  padding:9px 11px;font-size:12.5px;cursor:pointer;transition:.16s;white-space:nowrap}
.btn:hover:not(:disabled){border-color:var(--accent);color:#fff;background:#26324a}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;color:#fff;font-weight:600}
.btn.wide{width:100%;margin-top:10px}
.btn-row{display:flex;gap:8px;margin:10px 0 4px}
.btn-row .btn{flex:1}
.switch{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--sub);
  margin:10px 0 2px;cursor:pointer}
.switch input{accent-color:var(--accent);width:15px;height:15px;cursor:pointer}
.score-box{margin-top:14px;background:var(--bg2);border:1px solid var(--line);border-radius:11px;padding:11px 12px}
.score-head{display:flex;justify-content:space-between;font-size:12px;color:var(--sub);margin-bottom:9px}
.score-head b{color:var(--txt);font-size:12.5px}
.score-bar{position:relative;height:9px;border-radius:6px;
  background:linear-gradient(90deg,#2f5d4c 0%,#33404f 48%,#33404f 52%,#7a3535 100%);overflow:hidden}
.score-bar i{position:absolute;left:50%;top:0;height:100%;width:0;background:var(--ok);
  border-radius:6px;transition:width .35s,left .35s,background .35s}
.score-bar u{position:absolute;left:50%;top:-2px;width:2px;height:13px;background:rgba(255,255,255,.5)}
.score-foot{display:flex;justify-content:space-between;font-size:10.5px;color:var(--faint);margin-top:6px}
.comment{margin-top:11px;font-size:12.5px;line-height:1.7;color:var(--sub);min-height:38px}
.comment b{color:var(--txt)}
.comment .good{color:var(--ok)}
.comment .warn{color:var(--warn)}
.think{margin-top:9px;font-size:11px;color:var(--faint);border-top:1px dashed var(--line);padding-top:9px}
.moves{max-height:190px;overflow:auto;font-size:12.5px}
.moves-empty{color:var(--faint);text-align:center;padding:14px 0}
.mv-row{display:grid;grid-template-columns:34px 1fr 1fr;gap:6px;padding:5px 4px;border-radius:6px}
.mv-row:nth-child(odd){background:rgba(255,255,255,.025)}
.mv-row .no{color:var(--faint)}
.mv-row .r{color:#ff9d9d}
.mv-row .b{color:#a9b6c9}
.mv-row.last{background:rgba(108,140,255,.13)}
.foot{margin-top:24px;text-align:center;color:var(--faint);font-size:11.5px;line-height:1.8}
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .panel{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));align-items:start}
  .board-wrap{padding:6px}
  .top h1{font-size:18px}
  .ver{display:none}
}