.qtc-flipbook{--qtc-accent:#998261;--qtc-ink:#252525;max-width:1220px;margin:28px auto;font-family:Arial,sans-serif;color:var(--qtc-ink)}
.qtc-book-stage{position:relative;display:flex;align-items:center;justify-content:center;min-height:min(var(--qtc-height),78vw);padding:24px 54px;background:linear-gradient(145deg,#f7f5f2,#ebe7e1);border-radius:12px;overflow:hidden}
.qtc-book{display:flex;justify-content:center;align-items:center;height:min(var(--qtc-height),72vw);max-width:100%;filter:drop-shadow(0 14px 20px rgba(0,0,0,.18));perspective:1800px;outline:none}
.qtc-page{height:100%;aspect-ratio:842.25/1190.25;background:#fff;overflow:hidden;position:relative;backface-visibility:hidden;transition:transform .38s ease,opacity .38s ease}
.qtc-page img{width:100%;height:100%;display:block;object-fit:contain;background:#fff;user-select:none}
.qtc-page-left{transform-origin:right center;border-radius:5px 0 0 5px}
.qtc-page-right{transform-origin:left center;border-radius:0 5px 5px 0}
.qtc-book.qtc-turn-next .qtc-page-right{transform:rotateY(-18deg);opacity:.42}
.qtc-book.qtc-turn-prev .qtc-page-left{transform:rotateY(18deg);opacity:.42}
.qtc-nav{position:absolute;z-index:2;width:42px;height:58px;border:0;border-radius:22px;background:rgba(255,255,255,.92);color:#292929;font-size:26px;line-height:1;box-shadow:0 3px 12px rgba(0,0,0,.16);cursor:pointer}
.qtc-nav:hover,.qtc-nav:focus-visible{background:var(--qtc-accent);color:#fff}
.qtc-nav:disabled{opacity:.3;cursor:default}
.qtc-prev{left:12px}.qtc-next{right:12px}
.qtc-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:12px;font-size:14px}
.qtc-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.qtc-tool{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:8px 14px;border:1px solid var(--qtc-accent);border-radius:5px;background:#fff;color:var(--qtc-ink);font:inherit;text-decoration:none;cursor:pointer}
.qtc-tool:hover,.qtc-tool:focus-visible{background:var(--qtc-accent);color:#fff}
.qtc-flipbook:fullscreen{display:flex;flex-direction:column;justify-content:center;max-width:none;padding:18px;background:#eae6df}
.qtc-flipbook:fullscreen .qtc-book-stage{flex:1;min-height:0}
.qtc-flipbook:fullscreen .qtc-book{height:min(86vh,900px)}
@media(max-width:700px){.qtc-book-stage{min-height:min(var(--qtc-height),138vw);padding:16px 42px}.qtc-book{height:min(var(--qtc-height),128vw)}.qtc-page-left{display:none}.qtc-page-right{border-radius:5px}.qtc-nav{width:34px;height:48px;font-size:20px}.qtc-prev{left:5px}.qtc-next{right:5px}.qtc-toolbar{align-items:flex-start;flex-direction:column}.qtc-actions{width:100%;justify-content:space-between}.qtc-tool{flex:1}}
@media(prefers-reduced-motion:reduce){.qtc-page{transition:none}}