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var(--ivory);outline-offset:0}.thumb-board{aspect-ratio:1;background-position:0 0;background-size:266.667% 266.667%;border-radius:3px;width:clamp(48px,100%,68px);transition:box-shadow .12s;display:block;position:relative;overflow:hidden;box-shadow:0 1px 2px #00000059}.thumb-piece{pointer-events:none;background-size:cover;width:33.34%;height:33.34%;position:absolute}.thumb-pieces{aspect-ratio:1;background:var(--board-light,#f0d9b5);border-radius:3px;width:clamp(48px,100%,68px);transition:box-shadow .12s;display:block;position:relative;overflow:hidden;box-shadow:0 1px 2px #00000059}.thumb-pieces .thumb-piece{background-position:50%;background-repeat:no-repeat;background-size:contain;width:auto;height:auto;inset:6%}.thumb[aria-checked=true] .thumb-pieces{box-shadow:0 0 0 2px var(--ivory), 0 1px 2px #00000059}.mark-thumb{aspect-ratio:1;background:var(--board-dark,#b58863);border-radius:3px;width:clamp(48px,100%,68px);transition:box-shadow .12s;display:block;position:relative;overflow:hidden;box-shadow:0 1px 2px #00000059;container-type:inline-size}.mark-thumb .thumb-piece{background-image:var(--piece-wn);width:80%;height:80%;top:12%;left:8%}.mark-thumb .cls-marker{display:block;position:absolute;top:5%;left:auto;right:5%;transform:none}.thumb[aria-checked=true] .mark-thumb{box-shadow:0 0 0 2px var(--ivory), 0 1px 2px #00000059}