.bkstage{perspective:1400px;margin-top:6px}.bkbook{position:relative;width:100%;height:min(60vh,520px);min-height:420px}.bkbook,.bksheet{transform-style:preserve-3d}.bksheet{position:absolute;inset:0;transform-origin:left center;transition:transform .9s cubic-bezier(.35,.08,.22,1)}.bksheet.fl{transform:rotateY(-180deg)}.bkface{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:4px 16px 16px 4px;overflow:hidden;box-shadow:0 18px 44px -20px rgba(20,12,4,.45);background:#fbf8f1}.bkface.b{transform:rotateY(180deg);border-radius:16px 4px 4px 16px;display:flex;align-items:center;justify-content:center;background:#f4eee1}.bkface.f:before{content:"";pointer-events:none;background:linear-gradient(90deg,rgba(30,20,8,.15),rgba(30,20,8,0) 9%)}.bkface.f:before,.bkpg{position:absolute;inset:0}.bkpg{padding:28px 20px 22px;display:flex;flex-direction:column;text-align:center;color:#2e2a24}.bkpg .grow2{flex:1;display:flex;flex-direction:column;justify-content:center;min-height:0}.bkeb{font-size:9px;font-weight:700;letter-spacing:.3em;text-transform:uppercase}.bkttl{font-family:var(--font-bricolage),var(--font-montserrat),sans-serif;font-size:20px;font-weight:800;line-height:1.15;margin:8px 0 0}.bkrule{width:40px;height:1px;margin:12px auto}.bknote{font-size:12px;line-height:1.6;opacity:.8}.bkfree{margin:4px auto 0;text-align:left;max-width:240px;font-size:12.5px;line-height:1.95;white-space:pre-wrap;overflow:auto;max-height:100%}.bkchip{display:inline-flex;align-items:center;gap:6px;margin:12px auto 0;padding:8px 14px;border-radius:999px;font-size:10px;font-weight:700;letter-spacing:.14em;border:1px solid}.bkchip,.bkmenu .cn{text-transform:uppercase}.bkmenu .cn{font-size:9px;font-weight:800;letter-spacing:.28em;margin-top:12px}.bkmenu .cd{font-family:var(--font-bricolage),var(--font-montserrat),sans-serif;font-size:13.5px;line-height:1.4;margin-top:2px}.bkbar{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:14px}.bkbar .nav2{width:36px;height:36px;border-radius:50%;border:1px solid var(--border,#ddd);background:var(--card,#fff);color:inherit;font-size:15px;cursor:pointer;flex:none}.bkbar .nav2[disabled]{opacity:.3}.bkdots{display:flex;gap:6px}.bkdots i{width:6px;height:6px;border-radius:50%;background:var(--border,#ddd);transition:all .25s}.bkdots i.on{background:#7c5ce0;transform:scale(1.3)}@media (prefers-reduced-motion:reduce){.bksheet{transition-duration:.01s}}