.flipbook{width:100%;min-width:0;color:var(--ink);background:#fff}.flip-viewport{display:flex;justify-content:center;width:100%;padding:22px 0 25px;overflow:hidden}.flip-surface{width:100%;position:relative;touch-action:pan-y;outline:none}.flip-surface:focus-visible{outline:2px solid var(--red);outline-offset:4px}.flip-page{background:#fff;overflow:hidden}.flip-page img{width:100%;height:100%;display:block;object-fit:contain;user-select:none;-webkit-user-drag:none}.flip-page::after{content:'';position:absolute;inset:0;pointer-events:none}.flip-page.--left::after{background:linear-gradient(to left,#00000020,transparent 7%)}.flip-page.--right::after{background:linear-gradient(to right,#00000020,transparent 7%)}.flip-surface .stf__wrapper{filter:drop-shadow(0 10px 12px #20282026)}.flip-surface:not(.ready){aspect-ratio:1.414;display:flex;justify-content:center}.flip-surface:not(.ready) .flip-page{display:none}.flip-surface:not(.ready) .flip-page:first-child{display:block;width:50%;height:100%}.flip-nav{display:flex;align-items:center;justify-content:center;gap:21px;font-size:11px;margin-top:3px}.flip-button{width:40px;height:40px;border-radius:50%;border:1px solid #a6aba1;background:#fff;color:var(--ink);font:17px Arial,sans-serif;cursor:pointer;transition:background .2s,color .2s}.flip-button:hover:not(:disabled){background:var(--ink);color:white}.flip-button:disabled{opacity:.28;cursor:default}.flip-indicator{min-width:132px;text-align:center;color:var(--muted);font-size:11px}.flip-hint{font-size:10px;color:var(--muted);line-height:1.7;text-align:center;margin:15px 0 0}.flip-book-card .book-caption{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.flip-book-card .book-links{display:flex;gap:18px;align-items:center}.expand-book{font-size:10px;white-space:nowrap;color:var(--red)}.book-grid{align-items:start}.reader-body.flip-reader{background:#fff}.flip-reader-main{padding:18px 30px 30px}.flip-reader-main .flipbook{max-width:1100px;margin:auto}.flip-reader-main .flip-surface{max-width:min(1100px,calc((100svh - 300px) * 1.414));min-width:300px}.flip-reader-main .flip-viewport{padding-top:20px}.flip-reader-main .flip-nav{gap:28px}.flip-reader-main .flip-button{width:46px;height:46px}.flip-reader-main .flip-indicator{font-size:12px}.flip-reader-tools{display:flex;align-items:center;justify-content:center;gap:18px;margin:22px auto 0;font-size:11px;color:var(--muted);flex-wrap:wrap}.flip-reader-tools input{width:55px;padding:7px;text-align:center;border:1px solid var(--line);background:white;color:var(--ink);border-radius:3px}.flip-reader-tools button,.flip-reader-tools a{color:var(--ink);border:1px solid var(--line);background:white;border-radius:3px;padding:9px 12px;font-size:11px;cursor:pointer}.flip-reader-tools button:hover,.flip-reader-tools a:hover{border-color:var(--red);color:var(--red)}.flip-reader-main:fullscreen{overflow:auto;background:white;padding-top:24px}.flip-reader-main:fullscreen .flip-surface{max-width:min(1400px,calc((100svh - 240px) * 1.414))}.flip-error{color:var(--red)}
.book-grid{grid-template-columns:minmax(0,1fr);gap:64px;align-items:stretch}.flip-book-card{display:flex;flex-direction:column}.flip-book-card .flipbook{display:flex;flex-direction:column;flex:1}.flip-book-card .flip-nav{margin-top:auto}
@media(max-width:760px){.flip-reader-main{padding:12px 20px 25px}.flip-reader-main .flip-surface{min-width:0;max-width:100%}.flip-nav{gap:18px}.flip-book-card .book-caption{gap:12px}.flip-book-card .book-links{gap:12px}.flip-book-card .book-caption h3 span{display:block;margin-left:0}.flip-reader-tools{gap:10px}.flip-reader-main:fullscreen .flip-surface{max-width:100%}}
@media(max-width:480px){.flip-surface:not(.ready){aspect-ratio:.707}.flip-surface:not(.ready) .flip-page:first-child{width:100%}.flip-hint{font-size:9px}.flip-reader-main .flip-nav{gap:18px}}
@media(prefers-reduced-motion:reduce){.flip-button{transition:none}}