.cg-wrap{box-sizing:content-box;position:relative;display:block}cg-container{position:absolute;width:100%;height:100%;display:block;top:0}cg-board{position:absolute;top:0;left:0;width:100%;height:100%;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;line-height:0;background-size:cover}.cg-wrap.manipulable cg-board{cursor:pointer}cg-board square{position:absolute;top:0;left:0;width:12.5%;height:12.5%;pointer-events:none}cg-board square.move-dest{pointer-events:auto}cg-board square.last-move{will-change:transform}.cg-wrap piece{position:absolute;top:0;left:0;width:12.5%;height:12.5%;background-size:cover;z-index:2;will-change:transform;pointer-events:none}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{overflow:hidden;position:relative;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:2;opacity:.6}.cg-wrap cg-auto-pieces,.cg-wrap .cg-shapes,.cg-wrap .cg-custom-svgs{overflow:visible;position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.cg-wrap cg-auto-pieces{z-index:2}.cg-wrap cg-auto-pieces piece{opacity:.3}.cg-wrap .cg-shapes{overflow:hidden;opacity:.6;z-index:2}.cg-wrap .cg-custom-svgs{z-index:9}.cg-wrap .cg-custom-svgs svg{overflow:visible}.cg-wrap coords{position:absolute;display:flex;pointer-events:none;opacity:.8;font-family:sans-serif;font-size:9px}.cg-wrap coords.ranks{left:4px;top:-20px;flex-flow:column-reverse;height:100%;width:12px}.cg-wrap coords.ranks.black{flex-flow:column}.cg-wrap coords.ranks.left{left:-15px;align-items:flex-end}.cg-wrap coords.files{bottom:-4px;left:24px;flex-flow:row;width:100%;height:16px;text-transform:uppercase;text-align:center}.cg-wrap coords.files.black{flex-flow:row-reverse}.cg-wrap coords coord{flex:1 1 auto}.cg-wrap coords.ranks coord{transform:translateY(39%)}.cg-wrap coords.squares{bottom:0;left:0;text-transform:uppercase;text-align:right;flex-flow:column-reverse;height:100%;width:12.5%}.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%)}.chess-board-ground cg-board{background-color:var(--sq-light, #f0d9b5);background-image:conic-gradient(var(--sq-dark, #b58863) 0 25%,var(--sq-light, #f0d9b5) 0 50%,var(--sq-dark, #b58863) 0 75%,var(--sq-light, #f0d9b5) 0);background-position:0 0;background-size:25% 25%}.chess-board-ground coords{z-index:3;opacity:.96;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:12px;font-size:clamp(10px,1.7cqi,14px);font-weight:700;font-variant-numeric:tabular-nums;line-height:1;-webkit-user-select:none;user-select:none}.chess-board-ground coords.files,.chess-board-ground coords.ranks,.chess-board-ground coords.squares{text-transform:lowercase}.chess-board-ground coords.ranks{top:0;left:0;width:12.5%;height:100%}.chess-board-ground coords.ranks coord{box-sizing:border-box;flex:0 0 12.5%;display:flex;align-items:flex-start;justify-content:flex-start;padding:clamp(3px,.65cqi,6px) 0 0 clamp(3px,.65cqi,6px);transform:none}.chess-board-ground coords.files{bottom:0;left:0;width:100%;height:12.5%}.chess-board-ground coords.files coord{box-sizing:border-box;flex:0 0 12.5%;display:flex;align-items:flex-end;justify-content:flex-end;padding:0 clamp(3px,.65cqi,6px) clamp(3px,.65cqi,6px) 0;text-align:right}.chess-board-ground cg-board square.move-dest{background:radial-gradient(#14551e80 22%,#208530 0,#0000004d,#0000 0)}.chess-board-ground cg-board square.premove-dest{background:radial-gradient(#141e5580 22%,#203085 0,#0000004d,#0000 0)}.chess-board-ground cg-board square.oc.move-dest{background:radial-gradient(transparent 0%,transparent 80%,rgba(20,85,0,.3) 80%)}.chess-board-ground cg-board square.oc.premove-dest{background:radial-gradient(transparent 0%,transparent 80%,rgba(20,30,85,.2) 80%)}.chess-board-ground cg-board square.move-dest:hover{background:#14551e4d}.chess-board-ground cg-board square.premove-dest:hover{background:#141e5533}.chess-board-ground cg-board square.last-move{background-color:#9bc70069}.chess-board-ground cg-board square.selected{background-color:#14551e80}.chess-board-ground cg-board square.check{background:radial-gradient(ellipse at center,red,#e70000 25%,#a9000000 89%,#9e000000)}.chess-board-ground cg-board square.current-premove{background-color:#141e5580}:root:not([data-piece-set]) .chess-board-ground piece.pawn.white,:root[data-piece-set=cburnett] .chess-board-ground piece.pawn.white{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cpath%20fill='%23fff'%20stroke='%23000'%20stroke-linecap='round'%20stroke-width='1.5'%20d='M22.5%209c-2.21%200-4%201.79-4%204%200%20.89.29%201.71.78%202.38C17.33%2016.5%2016%2018.59%2016%2021c0%202.03.94%203.84%202.41%205.03-3%201.06-7.41%205.55-7.41%2013.47h23c0-7.92-4.41-12.41-7.41-13.47%201.47-1.19%202.41-3%202.41-5.03%200-2.41-1.33-4.5-3.28-5.62.49-.67.78-1.49.78-2.38%200-2.21-1.79-4-4-4z'/%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.bishop.white,:root[data-piece-set=cburnett] .chess-board-ground piece.bishop.white{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='none'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cg%20fill='%23fff'%20stroke-linecap='butt'%3e%3cpath%20d='M9%2036c3.39-.97%2010.11.43%2013.5-2%203.39%202.43%2010.11%201.03%2013.5%202%200%200%201.65.54%203%202-.68.97-1.65.99-3%20.5-3.39-.97-10.11.46-13.5-1-3.39%201.46-10.11.03-13.5%201-1.35.49-2.32.47-3-.5%201.35-1.94%203-2%203-2z'/%3e%3cpath%20d='M15%2032c2.5%202.5%2012.5%202.5%2015%200%20.5-1.5%200-2%200-2%200-2.5-2.5-4-2.5-4%205.5-1.5%206-11.5-5-15.5-11%204-10.5%2014-5%2015.5%200%200-2.5%201.5-2.5%204%200%200-.5.5%200%202z'/%3e%3cpath%20d='M25%208a2.5%202.5%200%201%201-5%200%202.5%202.5%200%201%201%205%200z'/%3e%3c/g%3e%3cpath%20stroke-linejoin='miter'%20d='M17.5%2026h10M15%2030h15m-7.5-14.5v5M20%2018h5'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.knight.white,:root[data-piece-set=cburnett] .chess-board-ground piece.knight.white{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='none'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cpath%20fill='%23fff'%20d='M22%2010c10.5%201%2016.5%208%2016%2029H15c0-9%2010-6.5%208-21'/%3e%3cpath%20fill='%23fff'%20d='M24%2018c.38%202.91-5.55%207.37-8%209-3%202-2.82%204.34-5%204-1.042-.94%201.41-3.04%200-3-1%200%20.19%201.23-1%202-1%200-4.003%201-4-4%200-2%206-12%206-12s1.89-1.9%202-3.5c-.73-.994-.5-2-.5-3%201-1%203%202.5%203%202.5h2s.78-1.992%202.5-3c1%200%201%203%201%203'/%3e%3cpath%20fill='%23000'%20d='M9.5%2025.5a.5.5%200%201%201-1%200%20.5.5%200%201%201%201%200m5.433-9.75a.5%201.5%2030%201%201-.866-.5.5%201.5%2030%201%201%20.866.5'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.rook.white,:root[data-piece-set=cburnett] .chess-board-ground piece.rook.white{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='%23fff'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cpath%20stroke-linecap='butt'%20d='M9%2039h27v-3H9zm3-3v-4h21v4zm-1-22V9h4v2h5V9h5v2h5V9h4v5'/%3e%3cpath%20d='m34%2014-3%203H14l-3-3'/%3e%3cpath%20stroke-linecap='butt'%20stroke-linejoin='miter'%20d='M31%2017v12.5H14V17'/%3e%3cpath%20d='m31%2029.5%201.5%202.5h-20l1.5-2.5'/%3e%3cpath%20fill='none'%20stroke-linejoin='miter'%20d='M11%2014h23'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.queen.white,:root[data-piece-set=cburnett] .chess-board-ground piece.queen.white{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='%23fff'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cpath%20d='M8%2012a2%202%200%201%201-4%200%202%202%200%201%201%204%200m16.5-4.5a2%202%200%201%201-4%200%202%202%200%201%201%204%200M41%2012a2%202%200%201%201-4%200%202%202%200%201%201%204%200M16%208.5a2%202%200%201%201-4%200%202%202%200%201%201%204%200M33%209a2%202%200%201%201-4%200%202%202%200%201%201%204%200'/%3e%3cpath%20stroke-linecap='butt'%20d='M9%2026c8.5-1.5%2021-1.5%2027%200l2-12-7%2011V11l-5.5%2013.5-3-15-3%2015-5.5-14V25L7%2014z'/%3e%3cpath%20stroke-linecap='butt'%20d='M9%2026c0%202%201.5%202%202.5%204%201%201.5%201%201%20.5%203.5-1.5%201-1.5%202.5-1.5%202.5-1.5%201.5.5%202.5.5%202.5%206.5%201%2016.5%201%2023%200%200%200%201.5-1%200-2.5%200%200%20.5-1.5-1-2.5-.5-2.5-.5-2%20.5-3.5%201-2%202.5-2%202.5-4-8.5-1.5-18.5-1.5-27%200z'/%3e%3cpath%20fill='none'%20d='M11.5%2030c3.5-1%2018.5-1%2022%200M12%2033.5c6-1%2015-1%2021%200'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.king.white,:root[data-piece-set=cburnett] .chess-board-ground piece.king.white{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='none'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cpath%20stroke-linejoin='miter'%20d='M22.5%2011.63V6M20%208h5'/%3e%3cpath%20fill='%23fff'%20stroke-linecap='butt'%20stroke-linejoin='miter'%20d='M22.5%2025s4.5-7.5%203-10.5c0%200-1-2.5-3-2.5s-3%202.5-3%202.5c-1.5%203%203%2010.5%203%2010.5'/%3e%3cpath%20fill='%23fff'%20d='M11.5%2037c5.5%203.5%2015.5%203.5%2021%200v-7s9-4.5%206-10.5c-4-6.5-13.5-3.5-16%204V27v-3.5c-3.5-7.5-13-10.5-16-4-3%206%205%2010%205%2010z'/%3e%3cpath%20d='M11.5%2030c5.5-3%2015.5-3%2021%200m-21%203.5c5.5-3%2015.5-3%2021%200m-21%203.5c5.5-3%2015.5-3%2021%200'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.pawn.black,:root[data-piece-set=cburnett] .chess-board-ground piece.pawn.black{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cpath%20stroke='%23000'%20stroke-linecap='round'%20stroke-width='1.5'%20d='M22.5%209a4%204%200%200%200-3.22%206.38%206.48%206.48%200%200%200-.87%2010.65c-3%201.06-7.41%205.55-7.41%2013.47h23c0-7.92-4.41-12.41-7.41-13.47a6.46%206.46%200%200%200-.87-10.65A4.01%204.01%200%200%200%2022.5%209z'/%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.bishop.black,:root[data-piece-set=cburnett] .chess-board-ground piece.bishop.black{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='none'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cg%20fill='%23000'%20stroke-linecap='butt'%3e%3cpath%20d='M9%2036c3.4-1%2010.1.4%2013.5-2%203.4%202.4%2010.1%201%2013.5%202%200%200%201.6.5%203%202-.7%201-1.6%201-3%20.5-3.4-1-10.1.5-13.5-1-3.4%201.5-10.1%200-13.5%201-1.4.5-2.3.5-3-.5%201.4-2%203-2%203-2z'/%3e%3cpath%20d='M15%2032c2.5%202.5%2012.5%202.5%2015%200%20.5-1.5%200-2%200-2%200-2.5-2.5-4-2.5-4%205.5-1.5%206-11.5-5-15.5-11%204-10.5%2014-5%2015.5%200%200-2.5%201.5-2.5%204%200%200-.5.5%200%202z'/%3e%3cpath%20d='M25%208a2.5%202.5%200%201%201-5%200%202.5%202.5%200%201%201%205%200z'/%3e%3c/g%3e%3cpath%20stroke='%23ececec'%20stroke-linejoin='miter'%20d='M17.5%2026h10M15%2030h15m-7.5-14.5v5M20%2018h5'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.knight.black,:root[data-piece-set=cburnett] .chess-board-ground piece.knight.black{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill='none'%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cpath%20fill='%23000'%20d='M22%2010c10.5%201%2016.5%208%2016%2029H15c0-9%2010-6.5%208-21'/%3e%3cpath%20fill='%23000'%20d='M24%2018c.38%202.91-5.55%207.37-8%209-3%202-2.82%204.34-5%204-1.04-.94%201.41-3.04%200-3-1%200%20.19%201.23-1%202-1%200-4%201-4-4%200-2%206-12%206-12s1.89-1.9%202-3.5c-.73-1-.5-2-.5-3%201-1%203%202.5%203%202.5h2s.78-2%202.5-3c1%200%201%203%201%203'/%3e%3cpath%20fill='%23ececec'%20stroke='%23ececec'%20d='M9.5%2025.5a.5.5%200%201%201-1%200%20.5.5%200%201%201%201%200m5.43-9.75a.5%201.5%2030%201%201-.86-.5.5%201.5%2030%201%201%20.86.5'/%3e%3cpath%20fill='%23ececec'%20stroke='none'%20d='m24.55%2010.4-.45%201.45.5.15c3.15%201%205.65%202.49%207.9%206.75S35.75%2029.06%2035.25%2039l-.05.5h2.25l.05-.5c.5-10.06-.88-16.85-3.25-21.34s-5.79-6.64-9.19-7.16z'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.rook.black,:root[data-piece-set=cburnett] .chess-board-ground piece.rook.black{background-image:url("data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2045%2045'%3e%3cg%20fill-rule='evenodd'%20stroke='%23000'%20stroke-linecap='round'%20stroke-linejoin='round'%20stroke-width='1.5'%3e%3cpath%20stroke-linecap='butt'%20d='M9%2039h27v-3H9zm3.5-7%201.5-2.5h17l1.5%202.5zm-.5%204v-4h21v4z'/%3e%3cpath%20stroke-linecap='butt'%20stroke-linejoin='miter'%20d='M14%2029.5v-13h17v13z'/%3e%3cpath%20stroke-linecap='butt'%20d='M14%2016.5%2011%2014h23l-3%202.5zM11%2014V9h4v2h5V9h5v2h5V9h4v5z'/%3e%3cpath%20fill='none'%20stroke='%23ececec'%20stroke-linejoin='miter'%20stroke-width='1'%20d='M12%2035.5h21m-20-4h19m-18-2h17m-17-13h17M11%2014h23'/%3e%3c/g%3e%3c/svg%3e")}:root:not([data-piece-set]) .chess-board-ground piece.queen.black,:root[data-piece-set=cburnett] .chess-board-ground 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.chess-board-ground piece.king.black,:root[data-piece-set=cburnett] .chess-board-ground 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button[aria-pressed=true]{color:#246943;background:#eaf4ee;border-color:#65a883}.account-card{position:relative}.account-language{z-index:1;position:absolute;top:14px;right:20px}.language-setting-compact{background:#fff;border:1px solid #dbe3eb;border-radius:999px;align-items:center;gap:4px;margin:0;padding:3px;display:flex}.language-setting-compact .language-setting-title{margin:0;padding:0 2px 0 6px}.language-setting-compact .language-setting-label{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.language-setting-compact .language-setting-options{gap:2px}.language-setting-compact .language-setting-options button{background:0 0;border:0;border-radius:999px;min-width:64px;padding:3px 10px;font-size:13px;line-height:20px}.language-setting-compact .language-setting-options button[aria-pressed=true]{color:#246943;background:#eaf4ee}@media(max-width:760px){.account-language{justify-content:flex-end;margin-bottom:12px;display:flex;position:static}}.shell{position:relative}html[lang=en] .match-action-button,html[lang=en] .homework-row-action{white-space:normal}html[lang=en] .choice-copy,html[lang=en] .classroom-hub-card>span,html[lang=en] .homework-row-copy{overflow-wrap:anywhere;min-width:0}html[lang=en] .classroom-match-meta>div{display:contents}html[lang=en] .classroom-match-meta>div>strong{grid-area:1/2}html[lang=en] .classroom-match-meta>div>span{text-align:center;grid-area:2/1/auto/-1}html[lang=en] .classroom-match-meta>button{grid-row:1}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}.header-avatar{position:relative;overflow:visible}.header-avatar img{border-radius:50%}.header-unread-dot,.mobile-nav-unread-dot{display:block;width:9px;height:9px;border:2px solid 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