._root_18vii_10{--qb-gutter:0px;--qb-piece-scale:1;grid-template-columns:var(--qb-gutter) minmax(0, 1fr);grid-template-rows:minmax(0, 1fr) var(--qb-gutter);aspect-ratio:1;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;grid-template-areas:"ranks surface"".files";width:100%;display:grid;position:relative;container-type:inline-size}._root_18vii_10[data-coordinates=outside]{--qb-gutter:clamp(16px, 4.5cqi, 24px)}._root_18vii_10[data-dragging]{z-index:var(--z-board-drag)}._surface_18vii_5{aspect-ratio:1;isolation:isolate;grid-area:surface;align-self:start;width:100%;position:relative}._surface_18vii_5[data-interactive]{touch-action:none}._surface_18vii_5[data-cursor=grab]{cursor:grab}._surface_18vii_5[data-cursor=pointer]{cursor:pointer}._surface_18vii_5[data-cursor=grabbing],._root_18vii_10[data-dragging] ._surface_18vii_5{cursor:grabbing}._surface_18vii_5[data-mode=annotate]{cursor:crosshair}._grid_18vii_69{border-radius:var(--radius-xs);background:var(--board-light);box-shadow:0 0 0 1px var(--board-frame), var(--shadow-3);grid-template-rows:repeat(8,minmax(0,1fr));display:grid;position:absolute;inset:0;overflow:hidden}._row_18vii_82{grid-template-columns:repeat(8,minmax(0,1fr));display:grid}._square_18vii_87{transition:background-color var(--duration-swap) var(--ease-standard);outline:none;position:relative}._square_18vii_87[data-color=light]{background:var(--board-light)}._square_18vii_87[data-color=dark]{background:var(--board-dark)}._square_18vii_87:before{content:"";pointer-events:none;position:absolute;inset:0}._square_18vii_87[data-last-move]:before{background:var(--board-last-move)}._square_18vii_87[data-premove]:before{background:var(--board-premove)}._square_18vii_87[data-selected]:before{background:var(--board-selected)}._square_18vii_87[data-check]:before{background:radial-gradient(circle at 50% 50%, var(--board-check) 0%, color-mix(in srgb, var(--board-check) 78%, transparent) 30%, color-mix(in srgb, var(--board-check) 30%, transparent) 58%, transparent 80%)}._square_18vii_87[data-dest]:after{content:"";pointer-events:none;transition:inset var(--duration-fast) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);position:absolute}._square_18vii_87[data-dest=empty]:after{background:var(--board-legal);opacity:.72;border-radius:50%;inset:43%}._square_18vii_87[data-dest=capture]:after{background:radial-gradient(circle at 50% 50%, transparent 0 40%, var(--board-legal-capture) 41% 45.5%, transparent 46.5%);opacity:.8;inset:0}@media (hover:hover){._square_18vii_87[data-dest=empty]:hover:after{opacity:1;inset:37%}._square_18vii_87[data-dest=capture]:hover:after{opacity:1}}._square_18vii_87[data-dest=empty]:focus-visible:after{opacity:1;inset:37%}._square_18vii_87[data-dest=capture]:focus-visible:after{opacity:1}@media (hover:none){._square_18vii_87[data-dest=empty]:after{opacity:.85;inset:41%}._square_18vii_87[data-dest=capture]:after{opacity:.9}}._square_18vii_87:focus-visible{z-index:1;box-shadow:inset 0 0 0 3px var(--focus-ring), inset 0 0 0 5px #00000059}._hover_18vii_216{width:12.5%;height:12.5%;transform:translate(calc(var(--col,0) * 100%), calc(var(--row,0) * 100%));box-shadow:inset 0 0 0 3px color-mix(in srgb, var(--board-selected) 100%, white 25%);background:color-mix(in srgb, var(--board-selected) 45%, transparent);pointer-events:none;opacity:0;position:absolute;top:0;left:0}._hover_18vii_216[data-visible]{opacity:1}._coordsInside_18vii_234{pointer-events:none;font-size:clamp(.5625rem,2.05cqi,.8125rem);font-weight:var(--weight-semibold);line-height:1;position:absolute;inset:0}._rankLabel_18vii_243,._fileLabel_18vii_244{position:absolute}._rankLabel_18vii_243{left:.75%;top:calc(var(--row) * 12.5% + 0.75%)}._fileLabel_18vii_244{right:calc((7 - var(--col)) * 12.5% + 0.9%);bottom:.7%}._coordsInside_18vii_234 [data-tone=light]{color:var(--board-coord-on-light)}._coordsInside_18vii_234 [data-tone=dark]{color:var(--board-coord-on-dark)}._ranksOutside_18vii_266,._filesOutside_18vii_267{color:var(--text-muted);font-size:clamp(.6875rem,2.2cqi,.8125rem);font-weight:var(--weight-medium);pointer-events:none;line-height:1;display:grid}._ranksOutside_18vii_266{grid-area:ranks;grid-template-rows:repeat(8,1fr);place-items:center start}._filesOutside_18vii_267{grid-area:files;grid-template-columns:repeat(8,1fr);place-items:end center}._pieces_18vii_291{pointer-events:none;position:absolute;inset:0}._piece_18vii_291{background-position:50%;background-repeat:no-repeat;background-size:calc(var(--qb-piece-scale) * 100%);width:12.5%;height:12.5%;transform:translate(calc(var(--col) * 100%), calc(var(--row) * 100%));position:absolute;top:0;left:0}._ghosts_18vii_310{pointer-events:none;position:absolute;inset:0}._piece_18vii_291[data-dragging]{z-index:3;will-change:transform;filter:drop-shadow(0 6px 7px #00000042)}._annotations_18vii_323{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}._tone-primary_18vii_332{fill:var(--board-annotation);stroke:var(--board-annotation)}._tone-alt_18vii_337{fill:var(--board-annotation-alt);stroke:var(--board-annotation-alt)}._tone-candidate-a_18vii_342{fill:var(--board-candidate-a);stroke:var(--board-candidate-a)}._tone-candidate-b_18vii_347{fill:var(--board-candidate-b);stroke:var(--board-candidate-b)}._tone-candidate-c_18vii_352{fill:var(--board-candidate-c);stroke:var(--board-candidate-c)}._arrow_18vii_358{opacity:.82}._arrowHead_18vii_362{stroke:none}._arrowShaft_18vii_367{fill:none;stroke-width:.15px;stroke-linecap:butt;stroke-linejoin:round}._tone-engine_18vii_375{fill:var(--board-engine);stroke:var(--board-engine)}._overlay_18vii_385 ._tone-engine_18vii_375{filter:drop-shadow(0 0 .045px var(--board-engine-halo)) drop-shadow(0 0 .045px var(--board-engine-halo))}._tone-reference_18vii_391{fill:var(--board-reference);stroke:var(--board-reference)}._overlay_18vii_385 ._tone-reference_18vii_391{filter:drop-shadow(0 0 .045px var(--board-reference-halo)) drop-shadow(0 0 .045px var(--board-reference-halo))}._overlay_18vii_385{animation:_qb-overlay-in_18vii_1 var(--duration-fast) var(--ease-enter)}@keyframes _qb-overlay-in_18vii_1{0%{opacity:0}}._annotations_18vii_323 [data-annotation]{transition:opacity var(--duration-fast) var(--ease-standard)}._hint_18vii_418{stroke:none;opacity:.28}._hintActive_18vii_423{fill:none;stroke-width:.06px;opacity:.55}._ring_18vii_429{fill:none;stroke-width:.075px;opacity:.88}._badge_18vii_435{stroke:#ffffffe6;stroke-width:.025px}._badgeText_18vii_440{fill:#fff;font-family:var(--font-sans);text-anchor:middle;dominant-baseline:central;font-size:.26px;font-weight:700}._preview_18vii_449{opacity:.55}._squareBadge_18vii_454{--badge:4.6%;z-index:3;left:calc((var(--col) + 1) * 12.5% - var(--badge) - 0.35%);top:calc(var(--row) * 12.5% + 0.35%);width:var(--badge);height:var(--badge);pointer-events:none;filter:drop-shadow(0 1px 1.5px #00000059);animation:_qb-badge-in_18vii_1 var(--duration-fast) var(--ease-enter);position:absolute}._squareBadge_18vii_454>svg,._squareBadge_18vii_454>img{width:100%;height:100%;display:block}@keyframes _qb-badge-in_18vii_1{0%{opacity:0;transform:scale(.7)}}._promotionBackdrop_18vii_488{z-index:4;border-radius:var(--radius-xs);animation:_qb-fade_18vii_1 var(--duration-fast) var(--ease-standard);background:#00000061;position:absolute;inset:0}._promotion_18vii_488{z-index:5;min-width:0;left:calc(var(--col) * 12.5%);top:calc(var(--row) * 12.5%);border-radius:var(--radius-sm);background:var(--surface-raised);width:12.5%;height:50%;box-shadow:0 0 0 1px var(--border-strong), var(--shadow-3);animation:_qb-fade_18vii_1 var(--duration-fast) var(--ease-enter);border:0;flex-direction:column;margin:0;padding:0;display:flex;position:absolute;overflow:hidden}._promotion_18vii_488[data-direction=up]{top:calc((var(--row) - 3) * 12.5%);flex-direction:column-reverse}._promotionOption_18vii_524{cursor:pointer;min-height:0;transition:background-color var(--duration-fast) var(--ease-standard);background-color:#0000;background-position:50%;background-repeat:no-repeat;background-size:88%;border:0;flex:1;padding:0}._promotionOption_18vii_524:focus-visible{box-shadow:inset 0 0 0 3px var(--focus-ring);background-color:var(--surface-interactive);outline:none}@media (hover:hover){._promotionOption_18vii_524:hover{background-color:var(--surface-interactive)}}@keyframes _qb-fade_18vii_1{0%{opacity:0}}._home_13199_1{width:100%;max-width:var(--content-max);padding-inline:max(var(--gutter), env(safe-area-inset-left)) max(var(--gutter), env(safe-area-inset-right));margin-inline:auto}._hero_13199_10{gap:var(--space-7);padding-block:var(--space-7) var(--space-8);display:grid}._copy_13199_16{flex-direction:column;align-items:flex-start;display:flex}._eyebrow_13199_22{font-size:var(--text-xs);font-weight:var(--weight-medium);letter-spacing:var(--tracking-caps);text-transform:uppercase;color:var(--accent)}._title_13199_30{max-width:13ch;margin-top:var(--space-4);font-family:var(--font-display);font-size:var(--text-4xl);font-weight:var(--weight-medium);line-height:var(--leading-tight);letter-spacing:var(--tracking-display)}._lede_13199_40{max-width:34ch;margin-top:var(--space-5);font-size:var(--text-lg);color:var(--text-secondary)}._actions_13199_47{gap:var(--space-2);margin-top:var(--space-6);flex-wrap:wrap;display:flex}._status_13199_54{align-items:baseline;gap:var(--space-2);max-width:46ch;margin-top:var(--space-6);font-size:var(--text-sm);color:var(--text-muted);display:flex}._statusDot_13199_66{border-radius:var(--radius-full);background:var(--accent);flex:none;width:6px;height:6px}._boardColumn_13199_74{width:100%;max-width:min(34rem, 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var(--border-subtle)}._sectionLabel_13199_142{font-size:var(--text-xs);font-weight:var(--weight-semibold);letter-spacing:var(--tracking-caps);text-transform:uppercase;color:var(--text-muted)}._pillars_13199_151{padding-block:var(--space-7);border-top:1px solid var(--border-subtle)}._pillarList_13199_156{gap:var(--space-6);margin-top:var(--space-5);display:grid}@media (width>=768px){._pillarList_13199_156{gap:var(--space-7);grid-template-columns:repeat(3,minmax(0,1fr))}}._pillar_13199_151{gap:var(--space-2);flex-direction:column;display:flex}._pillarName_13199_175{font-family:var(--font-display);font-size:var(--text-xl);font-weight:var(--weight-medium);letter-spacing:var(--tracking-tight);color:var(--text-primary)}._pillarBody_13199_183{max-width:40ch;color:var(--text-secondary);font-size:var(--text-sm);line-height:var(--leading-normal)}._modeList_13199_190{gap:var(--space-6);margin-top:var(--space-5);padding:0;list-style:none;display:grid}@media 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var(--gutter);margin-inline:auto}._plainLink_3jce0_43{color:var(--accent);font-weight:var(--weight-medium)}._skeleton_2q77e_1{background:linear-gradient(90deg, transparent 0%, var(--border-subtle) 50%, transparent 100%) 0 0 / 200% 100% no-repeat, var(--surface-interactive);animation:_shimmer_2q77e_1 1.6s var(--ease-standard) infinite;display:block}._sm_2q77e_10{border-radius:var(--radius-sm)}._md_2q77e_14{border-radius:var(--radius-md)}._lg_2q77e_18{border-radius:var(--radius-lg)}._page_2q77e_22{gap:var(--space-4);width:100%;max-width:var(--content-max);padding:var(--space-7) var(--gutter);flex-direction:column;margin-inline:auto;display:flex}._grid_2q77e_32{gap:var(--space-3);margin-top:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(12rem,1fr));display:grid}@keyframes _shimmer_2q77e_1{0%{background-position:150% 0,0 0}to{background-position:-50% 0,0 0}}@media (prefers-reduced-motion:reduce){:root:not([data-motion=full]) 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var(--border-subtle);border-radius:var(--radius-sm);background:var(--surface-raised);box-shadow:var(--shadow-2);color:var(--text-primary);font-size:var(--text-xs);font-weight:var(--weight-medium);line-height:var(--leading-snug);white-space:nowrap;pointer-events:none;opacity:0;transition:opacity var(--duration-fast) var(--ease-standard);position:absolute;left:50%;transform:translate(-50%)}._iconButton_8byq1_1[data-tooltip=below]:after{top:calc(100% + var(--space-2))}._iconButton_8byq1_1[data-tooltip=above]:after{bottom:calc(100% + var(--space-2))}._iconButton_8byq1_1[data-tooltip]:hover:after{opacity:1;transition-delay:.45s}._iconButton_8byq1_1[data-tooltip]:focus-visible:after{opacity:1}}._root_64jt8_1{display:inline-flex;position:relative}._menu_64jt8_6{z-index:var(--z-popover);min-width:14rem;padding:var(--space-1) 0;border:1px solid var(--studio-rule);border-radius:var(--studio-radius);background:var(--surface-raised);box-shadow:var(--shadow-2);animation:_menu-in_64jt8_1 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var(--focus-ring);outline-offset:1px}._itemLabel_64jt8_141{flex:1}._note_64jt8_147{color:var(--text-muted);font-size:var(--text-xs);margin-inline-start:var(--space-2)}._shortcut_64jt8_153{color:var(--text-muted);font-size:var(--text-xs);font-variant-numeric:tabular-nums;margin-inline-start:var(--space-4)}._checked_64jt8_160{color:var(--accent)}._wordmark_qzvzn_1{align-items:center;gap:var(--space-2);display:inline-flex}._mark_qzvzn_7{width:1.125rem;height:1.125rem;box-shadow:inset 0 0 0 1px var(--border-strong);background:conic-gradient(var(--text-primary) 0 25%, transparent 0 50%, var(--text-primary) 0 75%, var(--accent) 0 100%);border-radius:3px;flex:none}._name_qzvzn_21{font-family:var(--font-display);font-size:1.1875rem;font-weight:var(--weight-semibold);letter-spacing:var(--tracking-tight);line-height:1}@media (width<=359.98px){._wordmark_qzvzn_1[data-compact] ._name_qzvzn_21{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}}._header_1487w_1{z-index:var(--z-sticky);padding-top:env(safe-area-inset-top);background:var(--background);border-bottom:1px solid var(--border-subtle);position:sticky;top:0}._inner_1487w_10{align-items:center;gap:var(--space-5);height:var(--header-height);padding-inline:max(var(--gutter), env(safe-area-inset-left)) max(var(--gutter), env(safe-area-inset-right));display:flex}._brand_1487w_19{min-height:var(--touch-target-min);margin-left:calc(-1 * var(--space-1));padding-inline:var(--space-1);border-radius:var(--radius-sm);color:var(--text-primary);align-items:center;text-decoration:none;display:inline-flex}._envTag_1487w_30{margin-left:calc(-1 * var(--space-3));padding:1px var(--space-2);border:1px solid 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