.book-page{--desk:#eae8e0;--sheet:#faf8f0;--book-ink:#393b30;--book-muted:#686a5e;--book-line:#d8d5c9;--sheet-height:min(820px, calc(100svh - 140px));--volume-width:min(650px, calc(var(--sheet-height) * .79), calc(100vw - 64px));background:var(--desk);color:var(--book-ink)}[data-theme=dark] .book-page{--desk:#1c201b;--sheet:#282c23;--book-ink:#d6d9c9;--book-muted:#a3a894;--book-line:#43483b}.js .book-page{height:100svh;overflow:hidden}.book-stage{place-items:center;min-height:100svh;padding:70px 24px;display:grid}.book-volume{touch-action:pan-y pinch-zoom;width:var(--volume-width);height:var(--sheet-height);grid-template-rows:minmax(0,1fr);grid-template-columns:minmax(0,1fr);display:grid;position:relative}.book-volume[data-spread=double]{width:min(1240px, calc(var(--sheet-height) * 1.46), calc(100vw - 64px));grid-template-columns:repeat(2,minmax(0,1fr))}.book-volume>.book-sheet{grid-row:1}.book-sheet-primary{grid-column:1}.book-sheet-secondary,[data-book-layout=vertical] 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