:root{--bg:#13161b;--panel:#1b1f27;--panel-2:#222732;--line:#2d3340;--ink:#e7e9ec;--muted:#8c93a0;--gold:#e0892f;--gold-dim:#9c5f23;--teal:#5fb3a6;--sq-light:#f0d9b5;--sq-dark:#b58863;--last:rgba(205,210,106,.55);--sel:rgba(20,85,30,.3);--dot:rgba(0,0,0,.16);--panel-w:900px;--board-offset:360px;--main-pad:16px;--tag-color:#ffffff;--fs-logo:33px;--fs-tag:28px;--fs-status:17px;--fs-flip:18px;--fs-panel-title:19px;--fs-notation:15.5px;--nav-h:51px;--fs-nav:28px;--nag-w:40px;--nag-h:38px;--fs-nag:18px;--act-w:43px;--act-h:36px;--fs-act:20px}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.4}.shell{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.topbar{display:flex;align-items:baseline;gap:14px;padding:16px 22px;border-bottom:1px solid var(--line);flex:0 0 auto}.topbar .logo{font-weight:800;letter-spacing:-.5px;font-size:var(--fs-logo)}.topbar .logo b{color:var(--gold)}.topbar .tag{color:var(--tag-color);font-size:var(--fs-tag)}.body{flex:1 1 auto;display:flex;min-height:0}.main{flex:1 1 auto;display:flex;align-items:flex-start;justify-content:center;padding:var(--main-pad);min-width:0;min-height:0;overflow-y:auto}.board-col{display:flex;flex-direction:column;width:min(100%,calc(100vh - var(--board-offset)))}.panel{flex:0 0 var(--panel-w);width:var(--panel-w);border-left:1px solid var(--line);background:var(--panel);display:flex;flex-direction:column;min-height:0;overflow-y:auto;overflow-x:hidden}@media (max-width:860px){.body{flex-direction:column;overflow:auto}.main{padding:10px;justify-content:center}.board-col{width:100%;max-width:min(100%,72vh)}.panel{flex:1 1 auto!important;width:100%!important;border-left:none;border-top:1px solid var(--line)}.col-resizer{display:none}.topbar{padding:12px 14px}.notation-wrap{height:auto!important;max-height:46vh}.engine-box{height:auto!important;max-height:60vh}.panel-resizer{display:none}}@media (max-width:560px){.topbar .logo{font-size:20px}.topbar .tag{font-size:12px}.pgnbar button,.navbar button{font-size:13px}.eval-score{font-size:20px}}.board{width:100%;aspect-ratio:1/1;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);border-radius:6px;overflow:hidden;box-shadow:0 8px 28px #00000073;-webkit-user-select:none;user-select:none;touch-action:none}.sq{position:relative;display:flex;align-items:center;justify-content:center}.sq.light{background:var(--sq-light)}.sq.dark{background:var(--sq-dark)}.sq.last:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--last)}.sq.sel:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--sel)}.sq .coord{position:absolute;font-size:10px;font-weight:700;opacity:.7;pointer-events:none}.sq .coord.file{right:3px;bottom:1px}.sq .coord.rank{left:3px;top:1px}.sq.light .coord{color:#b58863}.sq.dark .coord{color:#f0d9b5}.sq .dot{position:absolute;width:30%;height:30%;border-radius:50%;background:var(--dot);z-index:2}.sq .ring{position:absolute;top:6%;right:6%;bottom:6%;left:6%;border:5px solid var(--dot);border-radius:50%;z-index:2}.pc{position:relative;z-index:3;width:100%;height:100%;background-size:contain;background-repeat:no-repeat;background-position:center;cursor:pointer}.ghost{position:fixed;left:0;top:0;z-index:99;pointer-events:none;transform:translate(-50%,-50%);filter:drop-shadow(0 6px 6px rgba(0,0,0,.4))}.navbar{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px;width:100%}.navbar button{height:var(--nav-h);font-size:var(--fs-nav);background:var(--panel-2);border:1px solid var(--line);border-radius:9px;display:flex;align-items:center;justify-content:center}.navbar button:hover{border-color:var(--gold-dim);background:#2a3140}.navbar button:active{background:var(--gold);color:#1c1206}.statusrow{display:flex;justify-content:space-between;align-items:center;margin-top:12px;gap:10px}.flip{background:transparent;font-size:var(--fs-flip);padding:9px 16px}.status{font-size:var(--fs-status);color:var(--muted)}.status b{color:var(--ink)}button{background:var(--panel-2);color:var(--ink);border:1px solid var(--line);border-radius:7px;padding:7px 11px;font-size:13px;cursor:pointer;font-weight:600}button:hover{border-color:var(--gold-dim)}button.primary{background:var(--gold);color:#1c1206;border-color:var(--gold)}button.ghostbtn{background:transparent}.panel .head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--panel-2)}.panel .head .ttl{font-weight:700;font-size:var(--fs-panel-title);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.panel .head .eng{font-size:11px;color:var(--muted);white-space:nowrap}.panel .head .eng 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solid #39414f;border-radius:7px;cursor:pointer;color:var(--ink);display:inline-flex;align-items:center;justify-content:center}.nag:hover{border-color:var(--gold);background:#2d3543}.nag.active{background:var(--gold);color:#1c1206;border-color:var(--gold)}.nag:disabled{opacity:.3;cursor:default}.nsep{width:1px;height:26px;background:var(--line);margin:0 5px;display:inline-block}.notation{flex:1 1 auto;padding:12px 14px;min-height:0;overflow:auto;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:var(--fs-notation)}.notation .empty{color:var(--muted);font-style:italic}.mv{display:inline-block;padding:1px 5px;border-radius:5px;cursor:pointer;white-space:nowrap}.mv:hover{background:var(--panel-2)}.mv.current{background:var(--gold);color:#1c1206;font-weight:700}.cmt{color:#93d6c4;font-style:italic;padding:0 4px;cursor:pointer}.cmt:hover{text-decoration:underline}.variation{margin:4px 0 4px 10px;padding:2px 0 2px 9px;border-left:2px solid #3c4454;color:#b9c1cd}.variation 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textarea{width:100%;min-height:110px;background:var(--panel-2);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:9px;font:inherit;resize:vertical}.card textarea.cmt-area{min-height:200px;font-size:15px;line-height:1.5}.card textarea.mono{font-family:ui-monospace,Menlo,Consolas,monospace;min-height:220px;font-size:12.5px}.card .msg{color:var(--gold);font-size:12.5px;margin:8px 0 0}.card .row{display:flex;justify-content:flex-end;gap:8px;margin-top:10px}.promo{display:flex;gap:8px;justify-content:center}.promo .ppc{width:56px;height:56px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;cursor:pointer;background-size:80%;background-repeat:no-repeat;background-position:center}.promo .ppc:hover{border-color:var(--gold)}.toast{position:fixed;bottom:18px;left:50%;transform:translate(-50%);background:var(--gold);color:#1c1206;padding:9px 16px;border-radius:8px;font-weight:700;font-size:13px;opacity:0;transition:opacity 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var(--line);position:relative}.panel-resizer:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:42px;height:3px;border-radius:3px;background:#3c4454}.panel-resizer:hover:after{background:var(--gold-dim)}.engine-box{flex:0 0 auto}.eval-score{font-size:24px}.eng-line{font-size:13px}.engine-head-right{display:flex;align-items:center;gap:10px}.thr{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--muted);font-weight:700}.thr-lab{letter-spacing:.04em}.thr-btn{width:22px;height:22px;padding:0;line-height:1;font-size:14px;font-weight:700;background:var(--panel);border:1px solid var(--line);border-radius:6px;color:var(--ink);cursor:pointer}.thr-btn:hover:not(:disabled){border-color:var(--gold)}.thr-btn:disabled{opacity:.4;cursor:default}.thr-n{color:var(--ink);min-width:16px;text-align:center;font-size:13px}.notation-wrap{flex:0 0 auto;display:flex;flex-direction:column;min-height:0;overflow:hidden}.col-resizer{flex:0 0 auto;width:10px;cursor:col-resize;background:var(--bg);position:relative;align-self:stretch}.col-resizer:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:3px;height:46px;border-radius:3px;background:#3c4454}.col-resizer:hover:after{background:var(--gold-dim)}.board{position:relative;isolation:isolate}.board-shapes{position:absolute;grid-column:1 / -1;grid-row:1 / -1;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:4}.board.draw-active,.board.draw-active .pc{cursor:crosshair}.topnav{margin-left:auto;display:flex;gap:11px;align-self:center;flex-wrap:wrap}.topnav-link{font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap;color:var(--ink);background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:7px 18px}.topnav-link:hover{border-color:var(--gold-dim);background:#2a3140}@media (max-width:560px){.topnav-link{font-size:13px;padding:6px 11px}}.topnav-link.board-btn{width:47px;height:37px;padding:0;overflow:hidden;border-color:var(--gold-dim);border-radius:10px;background-color:var(--gold);background-image:conic-gradient(#1b2740 0 90deg,var(--gold) 90deg 180deg,#1b2740 180deg 270deg,var(--gold) 270deg 360deg);background-size:7px 7px;transform:translateY(1px);box-shadow:inset 0 0 0 1px #ffffff0d}.topnav-link.board-btn:hover{border-color:var(--gold);background-color:var(--gold);background-image:conic-gradient(#1b2740 0 90deg,var(--gold) 90deg 180deg,#1b2740 180deg 270deg,var(--gold) 270deg 360deg);background-size:7px 7px;transform:translateY(1px);box-shadow:inset 0 0 0 1px #ffffff14,0 0 0 2px #e0892f33}@media (max-width:560px){.topnav-link.board-btn{width:42px;height:33px;background-size:6px 6px}}.s2db-choose{display:flex;flex-direction:column;gap:10px;margin:4px 0}.s2db-opt{display:flex;flex-direction:column;gap:2px;text-align:left;cursor:pointer;background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:13px 15px;color:var(--ink)}.s2db-opt:hover{border-color:var(--gold)}.s2db-opt .s2db-ico{font-size:20px;line-height:1}.s2db-opt .s2db-t{font-weight:650;font-size:14.5px}.s2db-opt .s2db-d{color:var(--muted);font-size:12px}.s2db-crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:2px;margin:2px 0 8px;font-size:13px}.s2db-crumb{background:none;border:0;cursor:pointer;color:var(--muted);font:inherit;font-weight:600;padding:2px 4px;border-radius:6px}.s2db-crumb:hover{color:var(--gold);background:var(--panel-2)}.s2db-crumb:last-child{color:var(--ink)}.s2db-sep{color:var(--muted);padding:0 1px}.s2db-arrow{display:flex;align-items:center;padding:0 12px;color:var(--muted)}.s2db-here{align-self:center;margin:6px 8px 6px 0;white-space:nowrap;cursor:pointer;font:inherit;font-size:12.5px;font-weight:600;background:var(--gold);color:#1c1206;border:1px solid var(--gold);border-radius:7px;padding:6px 10px}.s2db-here:hover{filter:brightness(1.06)}.s2db-here:disabled{opacity:.6;cursor:default}.s2db-actions{flex-wrap:wrap}.s2db-card{width:min(460px,100%)}.refx{background:var(--panel);border:1px solid var(--line);border-radius:12px;margin-top:12px;overflow:hidden}.refx-head{display:flex;align-items:center;gap:10px;padding:10px 13px;border-bottom:1px solid var(--line)}.refx-title{font-weight:700;font-size:14px}.refx-src{margin-left:auto;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px;color:var(--muted)}.refx-empty{padding:16px;text-align:center;color:var(--muted);font-size:12.5px}.refx-wrap{overflow-x:auto;max-height:220px;overflow-y:auto}.refx-tbl{width:100%;border-collapse:collapse;font-size:12.5px;min-width:520px}.refx-tbl thead th{position:sticky;top:0;background:var(--panel);z-index:1;font:600 10px/1 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);text-align:left;padding:8px 11px;border-bottom:1px solid var(--line);white-space:nowrap}.refx-tbl th.num,.refx-tbl td.num{text-align:right;font-family:ui-monospace,Menlo,Consolas,monospace}.refx-tbl tbody tr{border-bottom:1px solid #232935;cursor:pointer}.refx-tbl tbody tr:last-child{border-bottom:none}.refx-tbl tbody tr:hover{background:#e0892f14}.refx-tbl tbody tr:hover .refx-mv{color:#f4a24e}.refx-tbl td{padding:8px 11px;vertical-align:middle;white-space:nowrap}.refx-mv{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;color:var(--gold);font-size:13px}.refx-games{position:relative}.refx-games .n{position:relative;z-index:1}.refx-games .bar{position:absolute;left:8px;right:8px;bottom:4px;height:3px;border-radius:2px;background:#e0892f29;overflow:hidden}.refx-games .bar i{display:block;height:100%;background:var(--gold);border-radius:2px}.refx-player{display:flex;flex-direction:column;gap:1px;min-width:0}.refx-player .nm{font-size:12px}.refx-player .el{font:600 10px/1 ui-monospace,Menlo,Consolas,monospace;color:var(--muted)}.refx-yr,.refx-dash{color:var(--muted)}.refx-res{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;font-size:11px;padding:2px 7px;border-radius:5px;display:inline-block}.refx-res.w{background:#e7e2d6;color:#1a1712}.refx-res.dr{background:#2b3340;color:#c7cdd8}.refx-res.b{background:#12151b;color:#c7cdd8;border:1px solid #2b3340}.hl-wrap{position:relative;display:inline-flex;align-self:center}.hl-btn{width:47px;height:37px;padding:0;display:flex;align-items:center;justify-content:center;background:var(--panel-2);color:var(--ink);border:1px solid var(--line);border-radius:10px;cursor:pointer;transform:translateY(1px)}.hl-btn:hover{border-color:var(--gold-dim);background:#2a3140}.hl-btn.open{border-color:var(--gold);color:#fff;background:#2a3140}.hl-pop{position:absolute;top:calc(100% + 8px);right:0;z-index:60;min-width:212px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 34px #00000080;padding:8px}.hl-pop-h{font:600 10.5px/1 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:6px 8px 9px}.hl-list{display:flex;flex-direction:column;gap:2px}.hl-item{display:flex;align-items:center;gap:10px;width:100%;text-align:left;cursor:pointer;background:transparent;border:1px solid transparent;border-radius:8px;padding:7px 8px;color:var(--ink);font-weight:600;font-size:13px}.hl-item:hover{background:var(--panel-2)}.hl-item.on{border-color:var(--gold);background:#22283299}.hl-chips{display:inline-flex;flex-direction:column;gap:3px;flex:0 0 auto}.hl-chip{width:34px;height:11px;border-radius:3px;border:1px solid rgba(0,0,0,.35);box-shadow:inset 0 0 0 1px #ffffff0f}.hl-name{flex:1 1 auto;min-width:0}.hl-check{color:var(--gold);font-weight:800;flex:0 0 auto}@media (max-width:560px){.hl-btn{width:42px;height:33px}}