/* 棋盘样式：只用 .bo-board 开头的选择器，不依赖站点主题变量，也不被页面上的按钮等样式影响 */
.bo-board{position:relative;isolation:isolate;touch-action:none;user-select:none;-webkit-user-select:none;--cell:48px}
.bo-board:before{content:"";position:absolute;inset:calc(var(--cell)*.65);z-index:-1;background:#15132d;border-radius:10px}
.bo-board .tile{position:absolute;width:var(--cell);height:var(--cell)}
.bo-board .floor{z-index:0}
.bo-board .door-piece{position:absolute;display:block;max-width:none;pointer-events:none}
.bo-board .block{font:inherit;position:absolute;padding:0;border:0;background:transparent;cursor:grab;pointer-events:none;touch-action:none}
.bo-board .block:hover{background:transparent}
.bo-board .block:active{cursor:grabbing}
.bo-board .block-surface{position:absolute;inset:0;pointer-events:none;z-index:0}
.bo-board .block-cell{position:absolute;pointer-events:auto}