.shell{background:var(--bg);flex-direction:column;width:100%;min-width:0;min-height:100dvh;display:flex}.shell>*{min-width:0}.shell__bar{z-index:var(--z-sticky);align-items:center;gap:var(--s-4);width:100%;min-height:64px;padding-top:max(var(--s-3), env(safe-area-inset-top));padding-bottom:var(--s-3);padding-left:max(var(--page-pad), env(safe-area-inset-left), calc((100% - var(--page-max)) / 2 + var(--page-pad)));padding-right:max(var(--page-pad), env(safe-area-inset-right), calc((100% - var(--page-max)) / 2 + var(--page-pad)));background:var(--bg);border-bottom:1px solid var(--border);display:flex;position:sticky;top:0}.brand{align-items:center;gap:var(--s-3);color:var(--logo-ink);flex:none;margin-right:auto;text-decoration:none;display:inline-flex}.brand-mark{flex:none;width:32px;height:32px;position:relative}.brand-mark__svg{width:32px;height:32px;position:absolute;inset:0}.brand-mark__svg--dark{display:none}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .brand-mark__svg--light{display:none}:root:not([data-theme=light]) .brand-mark__svg--dark{display:block}}:root[data-theme=dark] .brand-mark__svg--light{display:none}:root[data-theme=dark] .brand-mark__svg--dark{display:block}.brand__wordmark{flex-direction:column;justify-content:center;width:7.6rem;line-height:1;display:flex}.brand__hero{font-family:var(--font-display);letter-spacing:-.02em;color:var(--logo-ink);font-size:15px;font-weight:700}.brand__sub{font-family:var(--font-display);letter-spacing:.22em;color:var(--accent);margin-top:3px;font-size:7.5px;font-weight:500}.shell__actions{justify-content:flex-end;align-items:center;gap:var(--s-2);flex:0 auto;min-width:0;display:flex}.shell__theme span{font-size:14px}.shell__legal{align-items:center;gap:var(--s-4);width:100%;padding-top:var(--s-3);padding-bottom:max(var(--s-3), env(safe-area-inset-bottom));padding-left:max(var(--page-pad), env(safe-area-inset-left), calc((100% - var(--page-max)) / 2 + var(--page-pad)));padding-right:max(var(--page-pad), env(safe-area-inset-right), calc((100% - var(--page-max)) / 2 + var(--page-pad)));border-top:1px solid var(--border);flex-wrap:wrap;margin-top:auto;font-size:13px;display:flex}.shell__legal a{color:var(--text-secondary);text-decoration:none}.shell__legal a:hover{color:var(--text);text-decoration:underline}@media (width<=640px){.shell__bar{gap:var(--s-2)}.brand__wordmark{display:none}.shell__actions{gap:var(--s-1)}.shell__actions .btn{height:44px;min-height:44px;padding:0 12px;font-size:13px}.shell__theme span{display:none}.shell__theme{width:44px;min-width:44px;padding:0}}.not-found{width:100%;max-width:var(--page-max);padding-top:var(--s-10);padding-bottom:var(--s-24);padding-left:max(var(--page-pad), env(safe-area-inset-left));padding-right:max(var(--page-pad), env(safe-area-inset-right));min-width:0;margin:0 auto;overflow-x:clip}.not-found h1{margin:0 0 var(--s-3);color:var(--text)}.not-found p{max-width:46ch;color:var(--text-secondary);text-wrap:pretty;margin:0}.not-found__links{gap:var(--s-4);margin-top:var(--s-6);flex-wrap:wrap;display:flex}.not-found a{color:var(--accent);text-underline-offset:.12em}.home{width:100%;max-width:var(--page-max);padding-top:var(--s-10);padding-bottom:var(--s-24);padding-left:max(var(--page-pad), env(safe-area-inset-left));padding-right:max(var(--page-pad), env(safe-area-inset-right));min-width:0;margin:0 auto;overflow-x:clip}.home__stage{gap:var(--s-10);grid-template-columns:minmax(0,1fr) minmax(0,360px);align-items:start;min-width:0;display:grid}.home__copy h1{margin:var(--s-3) 0 var(--s-4);overflow-wrap:break-word}.home__lede{max-width:46ch;color:var(--text-secondary);text-wrap:pretty}.home__lede+.home__lede{margin-top:var(--s-3)}.home__cta{gap:var(--s-2);margin-top:var(--s-6);flex-wrap:wrap;display:flex}.home__preview{gap:var(--s-3);flex-direction:column;display:flex}.home__board-wrap{aspect-ratio:1;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface);width:min(100%,360px);overflow:hidden}.home__hint{color:var(--text-muted);margin:0}.home__notes{gap:var(--s-6);margin-top:var(--s-16);padding-top:var(--s-8);border-top:1px solid var(--border);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.home__notes h2{margin-bottom:var(--s-2);font-size:16px;font-weight:600}.home__notes p{color:var(--text-secondary);text-wrap:pretty;margin:0;font-size:14px}.home__notes a{color:var(--accent)}@media (width<=860px){.home__stage{grid-template-columns:1fr}.home__board-wrap{width:min(100%,420px)}.home__notes{gap:var(--s-6);grid-template-columns:1fr}}@media (width<=640px){.home{padding-top:var(--s-6);padding-bottom:var(--s-16)}}.cg-wrap{box-sizing:content-box;display:block;position:relative}cg-container{width:100%;height:100%;display:block;position:absolute;top:0}cg-board{-webkit-user-select:none;user-select:none;background-size:cover;width:100%;height:100%;line-height:0;position:absolute;top:0;left:0}.cg-wrap.manipulable cg-board{cursor:pointer}cg-board square{pointer-events:none;width:12.5%;height:12.5%;position:absolute;top:0;left:0}cg-board square.move-dest{pointer-events:auto}cg-board square.last-move{will-change:transform}.cg-wrap piece{z-index:2;will-change:transform;pointer-events:none;background-size:cover;width:12.5%;height:12.5%;position:absolute;top:0;left:0}cg-board piece.dragging{cursor:move;z-index:11!important}piece.anim{z-index:8}piece.fading{z-index:1;opacity:.5}.cg-wrap piece.ghost{opacity:.3}.cg-wrap piece svg{pointer-events:none;z-index:2;opacity:.6;width:100%;height:100%;position:relative;top:0;left:0;overflow:hidden}.cg-wrap cg-auto-pieces,.cg-wrap .cg-shapes,.cg-wrap .cg-custom-svgs{pointer-events:none;width:100%;height:100%;position:absolute;top:0;left:0;overflow:visible}.cg-wrap cg-auto-pieces{z-index:2}.cg-wrap cg-auto-pieces piece{opacity:.3}.cg-wrap .cg-shapes{opacity:.6;z-index:2;overflow:hidden}.cg-wrap .cg-custom-svgs{z-index:9}.cg-wrap .cg-custom-svgs svg{overflow:visible}.cg-wrap coords{pointer-events:none;opacity:.8;font-family:sans-serif;font-size:9px;display:flex;position:absolute}.cg-wrap coords.ranks{flex-flow:column-reverse;width:12px;height:100%;top:-20px;left:4px}.cg-wrap coords.ranks.black{flex-flow:column}.cg-wrap coords.ranks.left{align-items:flex-end;left:-15px}.cg-wrap coords.files{text-transform:uppercase;text-align:center;flex-flow:row;width:100%;height:16px;bottom:-4px;left:24px}.cg-wrap coords.files.black{flex-flow:row-reverse}.cg-wrap coords coord{flex:auto}.cg-wrap coords.squares{text-transform:uppercase;text-align:right;flex-flow:column-reverse;width:12.5%;height:100%;bottom:0;left:0}.cg-wrap coords.squares.black{flex-flow:column}.cg-wrap coords.squares.left{text-align:left}.cg-wrap coords.squares coord{padding:6% 4%}.cg-wrap coords.squares.rank2{transform:translate(100%)}.cg-wrap coords.squares.rank3{transform:translate(200%)}.cg-wrap coords.squares.rank4{transform:translate(300%)}.cg-wrap coords.squares.rank5{transform:translate(400%)}.cg-wrap coords.squares.rank6{transform:translate(500%)}.cg-wrap coords.squares.rank7{transform:translate(600%)}.cg-wrap coords.squares.rank8{transform:translate(700%)}.cg-wrap piece.pawn.white{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.bishop.white{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.knight.white{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.rook.white{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.queen.white{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.king.white{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.pawn.black{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.bishop.black{background-image:url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0NSIgaGVpZ2h0PSI0NSI+PGcgZmlsbD0ibm9uZSIgZmlsbC1ydWxlPSJldmVub2RkIiBzdHJva2U9IiMwMDAiIHN0cm9rZS13aWR0aD0iMS41IiBzdHJva2UtbGluZWNhcD0icm91bmQiIHN0cm9rZS1saW5lam9pbj0icm91bmQiPjxnIGZpbGw9IiMwMDAiIHN0cm9rZS1saW5lY2FwPSJidXR0Ij48cGF0aCBkPSJNOSAzNmMzLjM5LS45NyAxMC4xMS40MyAxMy41LTIgMy4zOSAyLjQzIDEwLjExIDEuMDMgMTMuNSAyIDAgMCAxLjY1LjU0IDMgMi0uNjguOTctMS42NS45OS0zIC41LTMuMzktLjk3LTEwLjExLjQ2LTEzLjUtMS0zLjM5IDEuNDYtMTAuMTEuMDMtMTMuNSAxLTEuMzU0LjQ5LTIuMzIzLjQ3LTMtLjUgMS4zNTQtMS45NCAzLTIgMy0yeiIvPjxwYXRoIGQ9Ik0xNSAzMmMyLjUgMi41IDEyLjUgMi41IDE1IDAgLjUtMS41IDAtMiAwLTIgMC0yLjUtMi41LTQtMi41LTQgNS41LTEuNSA2LTExLjUtNS0xNS41LTExIDQtMTAuNSAxNC01IDE1LjUgMCAwLTIuNSAxLjUtMi41IDQgMCAwLS41LjUgMCAyeiIvPjxwYXRoIGQ9Ik0yNSA4YTIuNSAyLjUgMCAxIDEtNSAwIDIuNSAyLjUgMCAxIDEgNSAweiIvPjwvZz48cGF0aCBkPSJNMTcuNSAyNmgxME0xNSAzMGgxNW0tNy41LTE0LjV2NU0yMCAxOGg1IiBzdHJva2U9IiNlY2VjZWMiIHN0cm9rZS1saW5lam9pbj0ibWl0ZXIiLz48L2c+PC9zdmc+)}.cg-wrap piece.knight.black{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.rook.black{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.queen.black{background-image:url(data:image/svg+xml;base64,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)}.cg-wrap piece.king.black{background-image:url(data:image/svg+xml;base64,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)}cg-board{background-color:var(--board-light);border-radius:var(--r-sm);background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8' shape-rendering='crispEdges'%3E%3Crect width='8' height='8' fill='%23eef3f8'/%3E%3Cpath fill='%23b7c6d6' d='M1 0h1v1H1zm2 0h1v1H3zm2 0h1v1H5zm2 0h1v1H7zM0 1h1v1H0zm2 0h1v1H2zm2 0h1v1H4zm2 0h1v1H6zM1 2h1v1H1zm2 0h1v1H3zm2 0h1v1H5zm2 0h1v1H7zM0 3h1v1H0zm2 0h1v1H2zm2 0h1v1H4zm2 0h1v1H6zM1 4h1v1H1zm2 0h1v1H3zm2 0h1v1H5zm2 0h1v1H7zM0 5h1v1H0zm2 0h1v1H2zm2 0h1v1H4zm2 0h1v1H6zM1 6h1v1H1zm2 0h1v1H3zm2 0h1v1H5zm2 0h1v1H7zM0 7h1v1H0zm2 0h1v1H2zm2 0h1v1H4zm2 0h1v1H6z'/%3E%3C/svg%3E");background-size:100% 100%}cg-board square.last-move{background-color:var(--board-last-to)}cg-board square.selected{background-color:var(--board-selected);box-shadow:inset 0 0 0 2px var(--accent)}cg-board square.check{box-shadow:inset 0 0 0 3px var(--danger);background:0 0}cg-board square.move-dest{background:radial-gradient(circle closest-side, color-mix(in srgb, var(--accent) 88%, transparent) 28%, transparent 29%)}cg-board square.oc.move-dest{background:radial-gradient(circle closest-side, transparent 62%, color-mix(in srgb, var(--accent) 72%, transparent) 64%, color-mix(in srgb, var(--accent) 72%, transparent) 86%, transparent 88%)}@media (hover:hover) and (pointer:fine){cg-board square.move-dest:hover{background-color:color-mix(in srgb, var(--accent) 16%, transparent);background-image:radial-gradient(circle closest-side, var(--accent) 34%, transparent 35%)}cg-board square.oc.move-dest:hover{background-color:color-mix(in srgb, var(--accent) 14%, transparent);background-image:radial-gradient(circle closest-side, transparent 58%, var(--accent) 60%, var(--accent) 86%, transparent 88%)}}.cg-wrap coords{font-family:var(--font-mono);font-variant-numeric:tabular-nums;opacity:1;font-size:10px;font-weight:500}.cg-wrap coords.ranks{height:100%;top:0;left:4px}.cg-wrap coords.ranks.left{left:4px}.cg-wrap coords.ranks coord{transform:none}.cg-wrap coords.files{width:100%;height:16px;bottom:0;left:0}.orientation-white .ranks :nth-child(odd),.orientation-white .files :nth-child(2n),.orientation-black .ranks :nth-child(2n),.orientation-black .files :nth-child(odd){color:color-mix(in srgb, var(--board-dark) 72%, #22272c)}.orientation-white .ranks :nth-child(2n),.orientation-white .files :nth-child(odd),.orientation-black .ranks :nth-child(odd),.orientation-black .files :nth-child(2n){color:var(--board-light)}.page{--evalbar-width:44px;--board-size:clamp(480px, 40vw, 640px);width:100%;max-width:var(--page-max);padding-top:var(--s-8);padding-bottom:var(--s-24);padding-left:max(var(--page-pad), env(safe-area-inset-left));padding-right:max(var(--page-pad), env(safe-area-inset-right));min-width:0;margin:0 auto;overflow-x:clip;container-type:inline-size}.page>*{min-width:0;max-width:100%}.hero{margin-bottom:var(--s-6)}.hero h1{margin:var(--s-2) 0 var(--s-3);overflow-wrap:break-word}.lede{max-width:76ch;color:var(--text-secondary);text-wrap:pretty;overflow-wrap:break-word}.lede strong{color:var(--text);font-weight:600}.hero .lede+.lede{margin-top:var(--s-3)}.paste{margin-bottom:var(--s-6);min-width:0}.paste__field{width:100%;min-width:0;max-width:100%;height:88px;min-height:88px;padding:var(--s-4);resize:vertical;color:var(--text);background:var(--surface);border:1px dashed var(--border-strong);border-radius:var(--r-md);overflow-wrap:anywhere;transition:border-color var(--t-fast), background-color var(--t-fast);font-size:15px;line-height:1.5;display:block}.paste__field::placeholder{color:var(--text-muted)}.paste__field:hover{border-color:var(--accent)}.paste__field:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-ring);border-style:solid}.paste__field[aria-invalid=true]{border-color:var(--danger)}.paste__foot{margin-top:var(--s-3)}.paste__samples{align-items:center;gap:var(--s-2);flex-wrap:wrap;min-width:0;display:flex}.chip{align-items:center;gap:var(--s-1);max-width:100%;min-height:32px;color:var(--text-secondary);background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--r-pill);cursor:pointer;white-space:normal;text-wrap:pretty;text-align:left;overflow-wrap:break-word;transition:background-color var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-press);padding:6px 12px;font-size:13px;font-weight:500;line-height:1.35;display:inline-flex}.chip:active{transform:scale(.97)}.chip:hover{background:var(--accent-subtle);border-color:var(--accent);color:var(--accent)}.paste__msgs:not(.paste__msgs--open){height:0;margin:0;overflow:hidden}.paste__msgs--open{margin-top:var(--s-3)}.msg{gap:var(--s-2);min-width:0;padding:var(--s-2) var(--s-3);border-radius:var(--r-md);overflow-wrap:anywhere;align-items:flex-start;font-size:13px;line-height:1.5;display:flex}.msg__icon{width:16px;height:16px;color:var(--on-solid);border-radius:50%;flex:none;place-items:center;margin-top:2px;font-size:11px;font-weight:700;display:grid}.msg--error{background:color-mix(in srgb, var(--danger) 10%, var(--surface));color:var(--danger)}.msg--error .msg__icon{background:var(--danger)}.msg--error em{color:var(--text-secondary);font-style:normal}.msg--note{background:var(--bg-subtle);color:var(--text-secondary)}.msg--note .msg__icon{background:var(--positive)}.banner{padding:var(--s-3) var(--s-4);border-radius:var(--r-md);margin-bottom:var(--s-6);font-size:13px}.banner--warn{background:color-mix(in srgb, var(--warning) 14%, var(--surface));border:1px solid color-mix(in srgb, var(--warning) 40%, transparent);color:var(--text)}.tool{gap:var(--s-8);grid-template-columns:auto minmax(min(360px,100%),1fr);align-items:start;min-width:0;display:grid}.tool__left{min-width:0;max-width:100%}.board-stack{gap:var(--s-2);flex-direction:column;flex:none;width:fit-content;min-width:0;max-width:100%;display:flex}.board-stage{gap:var(--s-3);align-items:flex-end;min-width:0;max-width:100%;display:flex}.board-col{gap:var(--s-2);flex-direction:column;min-width:0;max-width:100%;display:flex}.board-frame{width:var(--board-size);height:var(--board-size);aspect-ratio:1;flex:none;position:relative;overflow:hidden}.board{width:100%;height:100%}.board-stack__hint{margin:0;width:var(--board-size);color:var(--text-muted);text-wrap:pretty;overflow-wrap:break-word;margin-inline-start:calc(var(--evalbar-width) + var(--s-3))}.board-toolbar{justify-content:flex-end;align-items:center;gap:var(--s-2);width:var(--board-size);max-width:100%;display:flex}.board-nav{gap:var(--s-2);width:var(--board-size);flex-direction:column;max-width:100%;margin-inline-start:calc(var(--evalbar-width) + var(--s-3));display:flex}.move-nav{align-items:center;gap:var(--s-2);display:flex}.move-nav .btn{touch-action:manipulation;flex:0 auto;min-width:0}.moves{align-items:center;gap:var(--s-1);flex-wrap:wrap;max-height:72px;margin:0;padding:0;list-style:none;display:flex;overflow:auto}.moves__pair{align-items:center;gap:2px;display:inline-flex}.moves__num{color:var(--text-muted);padding-inline:4px 2px}.moves__san{border-radius:var(--r-sm);height:28px;color:var(--text);cursor:pointer;touch-action:manipulation;transition:background-color var(--t-fast), color var(--t-fast), transform var(--t-press);background:0 0;border:0;padding:0 8px;font-size:13px;font-weight:500}.moves__san:active{transform:scale(.97)}.moves__san[aria-current=true]{background:var(--accent-subtle);color:var(--accent)}@media (hover:hover) and (pointer:fine){.moves__san:hover{background:var(--bg-subtle)}}.evalbar{align-items:center;gap:var(--s-2);width:var(--evalbar-width);height:var(--board-size);flex-direction:column;flex:none;display:flex}.evalbar__label{color:var(--text-secondary);font-size:13px;line-height:1}.evalbar[data-advantage=white] .evalbar__label{color:var(--text)}.evalbar__track{border-radius:var(--r-sm);background:var(--eval-black);border:1px solid var(--border-strong);flex:auto;width:24px;position:relative;overflow:hidden}.evalbar__white{height:var(--eval-fill,50%);background:var(--eval-white);transition:height var(--t-eval);position:absolute;bottom:0;left:0;right:0}.evalbar[data-orientation=black] .evalbar__white{top:0;bottom:auto}.tool__right{gap:var(--s-4);flex-direction:column;min-width:0;display:flex}.answer{min-width:0;max-width:100%;padding:var(--s-6);background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg)}.answer__row{justify-content:space-between;align-items:baseline;gap:var(--s-4);margin:var(--s-2) 0 var(--s-2);display:flex}.answer__move{color:var(--text)}.answer__move[data-empty=true]{color:var(--text-muted)}.answer__eval{color:var(--accent)}.answer__sub{color:var(--text-muted)}.answer__why{margin:0 0 var(--s-3);color:var(--text);text-wrap:pretty;max-width:46ch;font-size:15px;line-height:1.45}.answer__chips{gap:var(--s-2);margin-top:var(--s-3);flex-wrap:wrap;display:flex}.badge{border-radius:var(--r-pill);background:var(--bg-subtle);height:26px;color:var(--text-secondary);align-items:center;padding:0 12px;font-size:12.5px;font-weight:500;display:inline-flex}.badge--accent{background:var(--accent-subtle);color:var(--accent)}.ticker{gap:var(--s-4);padding:var(--s-4);background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--r-lg);grid-template-columns:repeat(4,minmax(0,1fr));align-content:start;min-width:0;max-width:100%;min-height:92px;display:grid}.stat{gap:var(--s-1);flex-direction:column;min-width:0;display:flex}.stat__value{color:var(--text);line-height:1.2}.ticker__bar{background:var(--border);border-radius:999px;grid-column:1/-1;height:4px;overflow:hidden}.ticker__fill{background:var(--accent-fill);border-radius:999px;height:100%;transition:width .16s linear}.lines{min-width:0;max-width:100%;padding:var(--s-4);background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg)}.lines__list{margin:var(--s-2) 0 0;gap:var(--s-2);flex-direction:column;padding:0;list-style:none;display:flex}.lines__list>li{min-width:0}.line{align-items:center;gap:var(--s-3);width:100%;min-width:0;height:40px;padding:0 var(--s-2);border-radius:var(--r-sm);background:var(--bg-subtle);color:inherit;text-align:left;opacity:.45;cursor:pointer;transition:opacity var(--t-panel);border:0;grid-template-columns:20px 4.75rem minmax(0,1fr);display:grid}.line[data-filled=true]{opacity:1}.line:disabled{cursor:default}.line[aria-checked=true]{background:var(--accent-subtle)}.line__rank{color:var(--text-muted)}.line__eval{color:var(--text);font-size:16px}.line[aria-checked=true] .line__eval{color:var(--accent)}.line__pv{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;min-width:0;font-size:13px;overflow:hidden}.meta{gap:var(--s-3) var(--s-4);padding:var(--s-4);border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface);grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-width:0;max-width:100%;margin:0;display:grid}.meta dt{margin-bottom:var(--s-1)}.meta dd{color:var(--text-secondary);overflow-wrap:anywhere;margin:0}.meta__fen{grid-column:1/-1}.warn{color:var(--text);font-weight:600}.prose{width:100%;min-width:0;max-width:min(72ch,100%);margin:var(--s-24) auto 0}.prose h2{margin:var(--s-12) 0 var(--s-4)}.prose h2:first-of-type{margin-top:0}.prose p{color:var(--text-secondary);margin-bottom:var(--s-4)}.prose>p.label{margin:0 0 var(--s-6);color:var(--text-muted)}.prose .mono{color:var(--text);background:var(--bg-subtle);border-radius:4px;padding:1px 4px;font-size:.93em}.prose strong{color:var(--text)}.prose h3{margin:var(--s-8) 0 var(--s-2);color:var(--text);font-size:1.05rem;font-weight:600}.prose ol,.prose ul{color:var(--text-secondary);margin:0 0 var(--s-4);padding-left:1.25em}.prose li{margin-bottom:var(--s-2)}.prose a{color:var(--accent);text-underline-offset:.12em}.prose .table-scroll{width:100%;max-width:100%;margin:0 0 var(--s-4);overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;display:block;overflow:auto hidden}.prose table{border-collapse:collapse;width:100%;min-width:36rem;max-width:none}.prose caption{caption-side:top;text-align:left;color:var(--text-secondary);margin-bottom:var(--s-2)}.prose th,.prose td{padding:var(--s-2) var(--s-4);border:1px solid var(--border);text-align:left;vertical-align:top}.prose thead th{background:var(--bg-subtle);color:var(--text);white-space:nowrap;font-weight:600}.prose tbody th{color:var(--text);white-space:nowrap;font-weight:600}.prose td{color:var(--text-secondary)}.foot{width:100%;min-width:0;max-width:min(72ch,100%);margin:var(--s-16) auto 0;padding-top:var(--s-6);border-top:1px solid var(--border);color:var(--text-muted)}.foot p+p{margin-top:var(--s-2)}.foot a{color:var(--accent);text-underline-offset:.12em}@media (width<=1080px){.page{--board-size:min(560px, calc(100cqw - var(--evalbar-width) - var(--s-3)))}.tool{grid-template-columns:minmax(0,1fr)}}@media (width<=720px){.page{--board-size:min(560px, 100cqw)}.tool__left,.board-stack,.board-stage{width:min(var(--board-size), 100%)}.board-stage{gap:var(--s-3);grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"eval toolbar""board board";align-items:center;display:grid}.board-col{display:contents}.board-stage .evalbar{align-items:center;gap:var(--s-2);flex-direction:row;grid-area:eval;width:100%;height:auto}.board-toolbar{grid-area:toolbar;align-self:center;width:auto}.board-toolbar .btn{gap:var(--s-1);height:auto;min-height:44px;color:var(--accent);text-underline-offset:.16em;touch-action:manipulation;background:0 0;border:0;border-radius:0;padding:0;font-size:13px;font-weight:500;text-decoration:underline;text-decoration-thickness:1px}.board-toolbar .btn:hover:not(:disabled){color:var(--accent-hover);background:0 0}.board-toolbar .btn:active:not(:disabled){color:var(--accent-hover);transform:none}.board-frame{width:min(var(--board-size), 100%);grid-area:board;height:auto}.board-stage .evalbar__label{text-align:end;flex:none;min-width:5.5ch}.board-stage .evalbar__track{border-radius:999px;flex:auto;width:auto;height:8px}.board-stage .evalbar__white,.board-stage .evalbar[data-orientation=black] .evalbar__white{width:var(--eval-fill,50%);height:auto;transition:width var(--t-eval);inset:0 0 0 auto}.board-stack__hint,.board-nav{width:min(var(--board-size), 100%);margin-inline-start:0}.moves{display:none}.move-nav .btn{flex:1 1 0;height:44px;min-height:44px}.line{height:44px}.paste__samples{align-items:baseline;column-gap:var(--s-4);row-gap:var(--s-2)}.chip{min-height:44px;color:var(--accent);text-underline-offset:.16em;touch-action:manipulation;background:0 0;border:0;border-radius:0;padding:10px 0;text-decoration:underline;text-decoration-thickness:1px}.chip:hover{color:var(--accent-hover);background:0 0;border-color:#0000}.chip:active{color:var(--accent-hover);transform:none}}@media (width<=560px){.page{padding-top:var(--s-4);padding-bottom:var(--s-16)}.ticker{grid-template-columns:repeat(2,minmax(0,1fr));min-height:140px}.num-hero{font-size:36px}.answer{padding:var(--s-4)}.answer__row{gap:var(--s-3)}.seg{display:flex}.seg__btn{white-space:nowrap;flex:auto;min-height:44px}}.meta__threads{grid-column:1/-1}.seg{border:1px solid var(--border);background:var(--bg-subtle);border-radius:999px;flex-wrap:wrap;gap:2px;max-width:100%;padding:2px;display:inline-flex}.seg__btn{padding:var(--s-1) var(--s-3);color:var(--text-secondary);cursor:pointer;transition:background-color var(--t-fast), color var(--t-fast), transform var(--t-press);background:0 0;border:0;border-radius:999px}.seg__btn:active:not(:disabled){transform:scale(.97)}.seg__btn[aria-pressed=true]{background:var(--accent-fill);color:var(--on-solid)}.seg__btn:disabled{opacity:.4;cursor:not-allowed}.privacy{width:100%;max-width:40rem;padding-top:var(--s-10);padding-bottom:var(--s-16);padding-left:max(var(--page-pad), env(safe-area-inset-left));padding-right:max(var(--page-pad), env(safe-area-inset-right));min-width:0;margin:0 auto;overflow-x:clip}.privacy h1{margin-bottom:var(--s-2)}.privacy__updated{margin:0 0 var(--s-8);color:var(--text-muted);font-size:14px}.privacy h2{letter-spacing:0;margin:var(--s-6) 0 var(--s-2);font-size:16px;font-weight:600}.privacy p{color:var(--text-secondary);text-wrap:pretty;overflow-wrap:break-word;margin:0}.privacy code{font-size:.9em}@media (width<=640px){.privacy{padding-top:var(--s-6);padding-bottom:var(--s-12)}}