.mt-board-stage{display:grid;gap:12px;width:100%;min-width:0}.mt-board-frame{--board-fit:max(300px,calc(100dvh - 390px));position:relative;width:min(100%,calc(var(--board-fit) * var(--board-zoom, 1)));min-width:min(100%,280px);margin-inline:auto}.mt-board-frame.is-xiangqi{width:min(100%,calc(var(--board-fit) * .906 * var(--board-zoom, 1)))}.mt-board-frame.is-3d.is-chess{aspect-ratio:1/1}.mt-board-frame.is-3d.is-xiangqi{aspect-ratio:10/11}.mt-board-3d,.mt-board-chess,.mt-board-xiangqi{position:relative;border-radius:12px}.mt-board-3d{width:100%;height:100%;overflow:hidden;border-radius:16px;background:#eef3ee}.mt-board-3d:focus-visible,.mt-board-chess:focus-visible,.mt-board-xiangqi:focus-visible{outline:3px solid var(--mt-board-focus-ring);outline-offset:4px}.mt-xq-svg{display:block;width:100%;height:auto;border-radius:14px;touch-action:none;user-select:none;-webkit-user-select:none;box-shadow:var(--mt-shadow-card)}.mt-xq-piece{cursor:pointer}.mt-flip{animation:mt-flip var(--mt-motion-slow) var(--mt-motion-easing);transform-box:fill-box;transform-origin:center}@keyframes mt-flip{0%{transform:scaleX(.05)}to{transform:scaleX(1)}}.mt-board-loading{width:100%;aspect-ratio:1/1}.mt-board-loading .ant-skeleton,.mt-board-loading .ant-skeleton-node{width:100%!important;height:100%!important}.mt-board-toolbar{justify-content:center}.mt-board-toolbar .ant-btn{min-width:44px;min-height:44px}.mt-board-tip{color:var(--mt-neutral-text-secondary);font-size:13px}@media (max-width:760px){.mt-board-frame{--board-fit:calc(100dvh - 200px)}}