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3px;border:1px solid #9ca9b0;border-radius:7px;background:#fff;cursor:pointer;font-weight:900}.promotion-choices button:hover{border-color:var(--chess-blue);background:#edf4f8}.chess-page footer{display:flex;align-items:flex-end;justify-content:space-between;padding:32px max(28px,calc((100vw - 1124px)/2));color:#fff}.chess-page footer b{font:900 14px ui-monospace,monospace}.chess-page footer p{margin:5px 0 0;color:#c4d1da;font-size:14px}.chess-page footer nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:18px}.chess-page footer a{color:#e1edf4;font-size:14px;text-decoration:none}@media(max-width:880px){.chess-layout{grid-template-columns:1fr}.chess-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:12px}.chess-history{grid-column:1/-1;margin-top:8px}.chess-history ol{max-height:180px}.chess-result{grid-column:1/-1;margin:0}}@media(max-width:620px){.site-header{padding:17px 15px}.mini-nav{display:none}.chess-page main{padding:0 10px}.chess-hero{padding:28px 7px 23px}.chess-hero h1{font-size:52px}.chess-settings{display:grid;grid-template-columns:1fr 1fr;padding:13px 12px}.chess-settings select{width:100%;min-width:0}.new-chess-game{grid-column:1/-1;width:100%;margin:0}.chess-board-column{padding:16px 6px}.chess-board-frame{padding:4px;border-width:3px}.chess-sidebar{grid-template-columns:1fr;padding:16px 12px}.chess-history,.chess-result{grid-column:1}.chess-page footer{display:grid;gap:20px;padding:28px 18px}.chess-page footer nav{justify-content:flex-start}}.chess-review-controls{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin-top:8px}.chess-review-controls[hidden]{display:none}.chess-review-controls button{min-width:0;padding:7px 3px;border:1px solid #9ca9b0;border-radius:6px;background:#fff;color:var(--chess-navy);cursor:pointer;font-size:14px;font-weight:900}.chess-review-controls button:disabled{cursor:default;opacity:.38}.chess-review-controls #chessAiAnalysis{grid-column:1/-1;background:var(--chess-navy);color:#fff;font-size:14px}.chess-history li button{min-width:0;padding:0;border:0;background:none;color:inherit;cursor:pointer;font:inherit;font-weight:900}.chess-history li button[aria-current=true]{color:#9a5f08;text-decoration:underline}.chess-history li.is-current{background:#f8edcf}.chess-history li.is-variation{background:#e8f2ec;color:#245d42}.chess-history li.is-variation span{color:#245d42}@media(max-width:880px){.chess-layout{grid-template-columns:minmax(0,1fr)}.chess-board-column,.chess-board-frame{min-width:0}}.chess-board-frame{display:grid;place-items:center}.chess-settings .chess-actions{grid-template-columns:repeat(2,auto);gap:8px;margin:0 0 0 8px}@media(max-width:620px){.chess-settings .chess-actions{grid-column:1/-1;justify-self:end;margin:0}}@media(max-width:620px){.chess-page .chess-board-column{padding:8px 3px 10px}.chess-page .chess-player{min-height:30px;padding-block:2px}.chess-page .chess-sidebar{padding:10px}.chess-page .chess-app{margin-bottom:32px;border-radius:12px}}@media(max-width:620px){.chess-page .chess-settings{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:6px 8px!important;padding:9px 10px!important}.chess-page .chess-settings label{min-width:0;gap:3px;font-size:14px}.chess-page .chess-settings select{width:100%!important;min-width:0!important;min-height:35px;padding:6px 22px 6px 7px!important;font-size:14px!important}}@media(max-width:620px){.chess-page .chess-settings{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px 8px;padding:9px 10px}.chess-page .chess-settings .ai-delay-option{display:flex;align-items:center;min-height:32px;padding:4px 5px;gap:5px;font-size:14px;white-space:nowrap}.chess-page .chess-settings .ai-delay-option input{flex:0 0 16px;width:16px;height:16px;margin:0}.chess-page .chess-settings .new-chess-game{grid-column:auto;justify-self:end;width:auto;min-width:0;min-height:32px;margin:0;padding:5px 9px;font-size:14px;white-space:nowrap}.chess-page .chess-settings .chess-actions{grid-column:1/-1;justify-self:end;display:grid;grid-template-columns:repeat(2,max-content);gap:5px;margin:0}.chess-page .chess-settings .chess-actions button{min-width:0;min-height:32px;padding:5px 9px;font-size:14px}}