.bkv3d{--bkv-height:clamp(360px, 70vh, 640px);width:100%;height:var(--bkv-height);touch-action:pan-y;cursor:grab;-webkit-user-select:none;user-select:none;outline-offset:4px;display:block;position:relative}.bkv3d.is-dragging{cursor:grabbing}.bkv3d canvas{width:100%;height:100%;display:block}.bkv3d img.flat{width:auto;height:88%;margin:auto;display:block;position:absolute;inset:0}.bkv3d .hint{text-align:left;pointer-events:none;color:#303e64;font-family:inherit;font-size:14px;font-style:italic;font-weight:400;line-height:1.4;position:absolute;bottom:2px;left:0;right:0}