.fb{position:relative;display:grid;gap:18px;padding:clamp(18px,3vw,40px) clamp(10px,3vw,40px) 22px;border-radius:26px;background:radial-gradient(ellipse at 50% 30%,#5d5d63,#3a3a3f 70%);box-shadow:var(--shadow-lg)}.fb:fullscreen{align-content:center;border-radius:0}.fb-stage{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:clamp(6px,1.5vw,18px)}.fb-book{position:relative;width:100%;min-height:220px;opacity:0;transition:opacity .6s var(--ease)}.fb-book.ready{opacity:1}.fb-holder .stf__parent{margin-inline:auto}.fb-page{background:#fff;overflow:hidden}.fb-page canvas{display:block;width:100%;height:100%}.fb-loading{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:14px;color:#fff;font-weight:600;text-align:center}.fb-loading i{width:34px;height:34px;border:3px solid rgba(255,255,255,.25);border-top:3px solid var(--y);border-radius:50%;animation:fb-spin .8s linear infinite}@keyframes fb-spin{to{transform:rotate(1turn)}}.fb-nav{width:48px;height:48px;border:0;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:34px;line-height:1;cursor:pointer;transition:background .2s,transform .2s,opacity .2s}.fb-nav:hover:not(:disabled){background:var(--y);color:var(--k);transform:scale(1.06)}.fb-nav:disabled{opacity:.25;cursor:default}.fb-bar{display:flex;align-items:center;justify-self:center;gap:4px;padding:6px;border-radius:14px;background:#fff;box-shadow:0 10px 30px -10px rgba(0,0,0,.5)}.fb-bar button,.fb-dl{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:42px;height:42px;padding:0 10px;border:0;border-radius:10px;background:none;font-size:17px;font-weight:700;cursor:pointer;transition:background .2s}.fb-bar button:hover,.fb-dl:hover{background:var(--y)}.fb-count{min-width:74px;padding:0 8px;color:var(--muted);font-size:14.5px;font-weight:600;text-align:center;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.fb-dl{margin-left:4px;background:var(--k);color:var(--y);font-size:14.5px}.fb-dl:hover{color:var(--k)}.fb-hint{color:rgba(255,255,255,.6);font-size:13px;text-align:center}@media (max-width:640px){.fb-nav{display:none}.fb-stage{grid-template-columns:1fr}.fb-dl span{display:none}.fb-bar button,.fb-dl{min-width:38px;height:38px;padding:0 8px}}