.skfb-sheet{position:absolute;inset:0;transform-style:preserve-3d;transform-origin:left center;transition:transform 700ms cubic-bezier(.2,.8,.2,1);border-radius:12px;pointer-events:none}.skfb-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:12px;overflow:hidden;background:#fff;border:1px solid rgba(0,0,0,.09)}.skfb-face img{width:100%;height:100%;object-fit:contain;background:#fff;display:block}.skfb-back{transform:rotateY(180deg)}.skfb-sheet.is-flipped{transform:rotateY(-180deg)}.skfb-pagenum{position:absolute;bottom:12px;right:14px;font-size:12px;font-weight:800;color:rgba(0,0,0,.55);background:rgba(255,255,255,.7);border:1px solid rgba(0,0,0,.08);border-radius:999px;padding:6px 10px}.skfb-wrap.is-fullscreen{position:fixed;inset:0;z-index:999999;background:rgba(10,10,10,.72);padding:20px;display:flex;flex-direction:column;justify-content:center}.skfb-wrap.is-fullscreen .skfb-stage{max-width:1200px;margin:0 auto;height:min(78vh,760px)}