/* Premium serialized e-book reader — shared stylesheet (ai-paper-review) */
@import url('https://fastly.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@500;600;700;800&family=Fraunces:ital,opsz,wght@0,9..144,500;0,9..144,600;1,9..144,500&display=swap');

:root{
  --acc:#b5701d; --acc2:#d68a2b; --acc-ink:#8f560f;
  --pg:#faf7f1; --pg2:#f3eee4; --card:#fffdf9; --ink:#22262d; --ink-2:#474d59; --ink-3:#8b8f9b;
  --line:#e9e2d4; --line-2:#ded6c4; --tint:#f6ecda;
  --ser:"Noto Serif KR",Georgia,serif; --disp:"Fraunces","Noto Serif KR",Georgia,serif;
  --san:"Pretendard",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans KR",sans-serif;
  --fs:19px; --lh:1.9; --measure:43rem;
  --sh-1:0 1px 2px rgba(40,36,28,.05); --sh-2:0 2px 6px rgba(40,36,28,.06),0 14px 40px rgba(40,36,28,.08);
  --rad:16px;
}
html[data-theme="sepia"]{--pg:#f2e8d2;--pg2:#ece0c6;--card:#f8f0dc;--ink:#3b3121;--ink-2:#5b4d37;--ink-3:#9a8a6a;--line:#e2d4b6;--line-2:#d6c6a4;--tint:#efe4c6;}
html[data-theme="dark"]{--pg:#12151a;--pg2:#0e1116;--card:#1a1e25;--ink:#e8eaef;--ink-2:#b7bdc9;--ink-3:#7e8695;--line:#2a2f39;--line-2:#353b46;--tint:#1f242d;--card:#1a1e25;--sh-1:0 1px 2px rgba(0,0,0,.35);--sh-2:0 2px 8px rgba(0,0,0,.4),0 16px 44px rgba(0,0,0,.5);}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(120% 60% at 50% -10%,var(--pg2),var(--pg) 60%);min-height:100vh;color:var(--ink);font-family:var(--san);font-size:var(--fs);line-height:var(--lh);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;transition:background .35s,color .35s;overflow-x:hidden}
.wrap{max-width:var(--measure);margin:0 auto;padding-left:clamp(1.1rem,5vw,1.5rem);padding-right:clamp(1.1rem,5vw,1.5rem)}
a{color:var(--acc-ink)}

/* progress bar */
.pbar{position:fixed;top:0;left:0;right:0;height:3px;background:transparent;z-index:60}
.pbar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2));box-shadow:0 0 8px color-mix(in srgb,var(--acc) 55%,transparent);transition:width .12s ease-out}

/* top bar */
.bar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--pg) 86%,transparent);backdrop-filter:saturate(1.5) blur(12px);-webkit-backdrop-filter:saturate(1.5) blur(12px);border-bottom:1px solid var(--line)}
.bar__in{display:flex;align-items:center;gap:.5rem;height:56px;max-width:64rem}
.bar__home{font-family:var(--ser);font-weight:700;font-size:1rem;letter-spacing:-.01em;color:var(--ink);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:min(50vw,26rem)}
.bar__home:hover{color:var(--acc-ink)}
.bar__right{margin-left:auto;display:flex;align-items:center;gap:.4rem}
.bar__n{font-size:.8rem;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.02em;white-space:nowrap;margin-right:.2rem}
.tgl,.iconbtn{width:38px;height:38px;display:inline-grid;place-items:center;border:1px solid var(--line-2);background:var(--card);color:var(--ink-2);border-radius:11px;cursor:pointer;font-size:.98rem;font-family:var(--san);line-height:1;transition:.15s;padding:0}
.tgl:hover,.iconbtn:hover{border-color:var(--acc);color:var(--acc-ink);transform:translateY(-1px)}
.iconbtn.sm{width:34px;height:34px;font-size:.82rem;font-weight:700}

/* ===== COVER (index) ===== */
.cover{text-align:center;padding:clamp(2.2rem,7vw,4.5rem) 0 1.5rem;position:relative}
.cover::before{content:"";position:absolute;top:8%;left:50%;transform:translateX(-50%);width:min(90%,40rem);height:60%;background:radial-gradient(60% 80% at 50% 0,color-mix(in srgb,var(--acc) 12%,transparent),transparent 70%);z-index:-1}
.cover__badge{display:inline-flex;align-items:center;gap:.5rem;font-size:.74rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--acc-ink);background:var(--card);border:1px solid var(--line-2);padding:.4rem .9rem;border-radius:999px;box-shadow:var(--sh-1)}
.cover__badge::before{content:"◈"}
.cover h1{font-family:var(--disp);font-weight:600;font-size:clamp(2.1rem,6.5vw,3.4rem);line-height:1.14;letter-spacing:-.025em;margin:1.2rem auto .7rem;max-width:22ch}
.cover .sub{font-size:1.04rem;line-height:1.7;color:var(--ink-2);max-width:34rem;margin:0 auto 1.3rem}
.cover .by{font-family:var(--ser);font-size:1.02rem;color:var(--ink);margin:.2rem 0}
.cover .go{display:inline-flex;align-items:center;gap:.55rem;margin-top:1.6rem;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;text-decoration:none;font-weight:700;font-size:1.02rem;padding:.9rem 1.9rem;border-radius:999px;box-shadow:0 8px 26px color-mix(in srgb,var(--acc) 40%,transparent);transition:.18s}
.cover .go::after{content:"→";transition:.18s}
.cover .go:hover{transform:translateY(-2px)}.cover .go:hover::after{transform:translateX(3px)}
.stats{display:flex;justify-content:center;gap:0;margin:2.4rem auto 0;max-width:30rem;background:var(--card);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;box-shadow:var(--sh-2)}
.stats>div{flex:1;padding:1.1rem .4rem;border-right:1px solid var(--line);font-size:.78rem;color:var(--ink-3)}
.stats>div:last-child{border-right:0}
.stats b{display:block;font-family:var(--disp);font-weight:600;font-size:1.65rem;color:var(--acc-ink);line-height:1;margin-bottom:.28rem}

/* ===== TOC ===== */
.toc{padding:1rem 0 4rem}
.toc>.wrap>h2{font-family:var(--san);font-size:.8rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);text-align:center;margin:2rem 0 .2rem}
.toc .cnt{text-align:center;color:var(--ink-3);font-size:.86rem;margin:0 0 1.6rem}
.toc .pt{font-family:var(--ser);font-weight:700;font-size:1.12rem;color:var(--ink);margin:2.2rem 0 .4rem;padding-bottom:.55rem;border-bottom:2px solid var(--line);letter-spacing:-.01em}
.toc .ep{display:flex;gap:1.1rem;align-items:flex-start;padding:1.15rem .4rem;border-bottom:1px solid var(--line);text-decoration:none;color:inherit;transition:.16s;border-radius:12px}
.toc .ep:hover{background:var(--card);padding-left:1rem;padding-right:1rem;border-bottom-color:transparent;box-shadow:var(--sh-1)}
.toc .ep__n{font-family:var(--disp);font-weight:600;font-size:1.5rem;color:var(--acc-ink);min-width:1.7em;line-height:1.1;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.toc .ep__t{font-family:var(--ser);font-weight:700;font-size:1.08rem;color:var(--ink);line-height:1.4;margin:.1rem 0 .3rem}
.toc .ep__p{font-size:.9rem;color:var(--ink-3);line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.toc .ep:hover .ep__t{color:var(--acc-ink)}

/* ===== ARTICLE ===== */
.art{padding:clamp(1.4rem,4vw,2.6rem) 0 2rem}
.art .wrap{max-width:var(--measure)}
.art__meta{font-family:var(--san);font-size:.76rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--acc-ink);margin:0 0 .7rem}
.art h1{font-family:var(--disp);font-weight:600;font-size:clamp(1.7rem,4.8vw,2.55rem);line-height:1.2;letter-spacing:-.02em;margin:.1rem 0 1rem}
.art__rt{display:inline-flex;align-items:center;gap:.4rem;font-size:.8rem;color:var(--ink-3);margin:0 0 1.8rem;font-family:var(--san)}
.art__rt::before{content:"◷";color:var(--acc-ink)}
.art__purpose{background:var(--tint);border-radius:14px;padding:1rem 1.2rem;font-size:.98rem;color:var(--ink-2);margin:1.2rem 0 1.6rem;border-left:3px solid var(--acc)}
.art__purpose b{color:var(--ink)}

.prose,.art>.wrap>h2,.art>.wrap>p,.art>.wrap>ul,.art>.wrap>ol{}
.prose{margin:0}
.art>.wrap>h2,.prose>h2{font-family:var(--ser);font-weight:700;font-size:1.4rem;line-height:1.32;letter-spacing:-.01em;color:var(--ink);margin:2.5rem 0 .5rem;scroll-margin-top:74px}
.art>.wrap>h2::before,.prose>h2::before{content:"";display:block;width:36px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--acc),var(--acc2));margin-bottom:.75rem}
.art>.wrap>h3,.prose>h3{font-family:var(--san);font-weight:700;font-size:1.1rem;color:var(--ink);margin:1.8rem 0 .5rem}
.art p,.prose p{margin:1.05em 0;color:var(--ink);word-break:keep-all;overflow-wrap:break-word}
.art .wrap>p:first-of-type{margin-top:0}
.art ul,.art ol,.prose ul,.prose ol{margin:1.05em 0;padding-left:1.4em}
.art li,.prose li{margin:.45em 0}
.art strong,.prose strong{font-weight:700}
.art em,.prose em{font-style:italic}

/* ===== BOXES (English generic + Korean variants) ===== */
.box{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--acc);border-radius:var(--rad);padding:1.15rem 1.35rem;margin:1.7rem 0;box-shadow:var(--sh-2)}
.box>h3{font-family:var(--san);font-size:.76rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--acc-ink);margin:0 0 .7rem;display:flex;align-items:center;gap:.5rem}
.box>h3::before{content:"";width:1.35em;height:1.35em;border-radius:7px;background:var(--tint);display:inline-grid;place-items:center;flex:none}
.box>ul,.box>ol{margin:.2rem 0 0;padding-left:1.3em}
.box>ul>li,.box>ol>li{margin:.42em 0;color:var(--ink-2)}
.box p{color:var(--ink-2);font-size:.97rem}
.box p:first-of-type{margin-top:0}.box p:last-child{margin-bottom:0}
.box .nt{margin-top:.7rem;padding-top:.6rem;border-top:1px dashed var(--line-2);font-size:.82rem;color:var(--ink-3)}

/* Korean intro_q / objectives / reflection */
.box--intro_q,.box--objectives,.box--reflection{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:1.15rem 1.35rem;margin:1.7rem 0;box-shadow:var(--sh-2);border-left:4px solid var(--acc)}
.box--intro_q{border-left-color:#5566c9}
.box--reflection{border-left-color:#c98a2b;border-style:solid}
.box__t{font-family:var(--san);font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--acc-ink);margin:0 0 .65rem;display:flex;align-items:center;gap:.5rem}
.box--intro_q .box__t{color:#5566c9}
.box--reflection .box__t{color:#b5701d}
.box__t::before{font-size:1em}
.box--intro_q .box__t::before{content:"?"}
.box--objectives .box__t::before{content:"◎"}
.box--reflection .box__t::before{content:"✺"}
.box__l{margin:0;padding-left:1.3em}
.box__l li{margin:.45em 0;color:var(--ink-2)}
.box--reflection .box__l li{margin:.55em 0}

/* chips (key terms) */
.chips{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.3rem}
.chip{font-family:var(--san);font-size:.82rem;font-weight:600;color:var(--acc-ink);background:var(--tint);border:1px solid color-mix(in srgb,var(--acc) 24%,transparent);padding:.28rem .7rem;border-radius:999px}

/* interactive checklist (English .cl/.ckx) */
.cl{list-style:none;margin:.2rem 0 0;padding:0}
.cl li{margin:.2rem 0}
.cl label{display:flex;gap:.65rem;align-items:flex-start;padding:.45rem .55rem;border-radius:9px;cursor:pointer;color:var(--ink-2);font-size:.96rem;transition:.14s}
.cl label:hover{background:var(--tint)}
.cl .ckx{margin-top:.3em;width:1.1em;height:1.1em;accent-color:var(--acc);flex:none;cursor:pointer}
.cl .ckx:checked+span{color:var(--ink-3);text-decoration:line-through}
.ck-meter{display:flex;align-items:center;gap:.7rem;margin-top:.7rem;padding-top:.65rem;border-top:1px solid var(--line)}
.ck-meter i{flex:1;height:6px;border-radius:3px;background:var(--tint);overflow:hidden;position:relative}
.ck-meter i::after{content:"";position:absolute;inset:0;width:var(--p,0%);background:linear-gradient(90deg,var(--acc),var(--acc2));transition:width .3s}
.ck-meter em{font-style:normal;font-size:.78rem;color:var(--ink-3);font-variant-numeric:tabular-nums}

/* ===== prev / next ===== */
.nx{padding:1.5rem 0 1rem}
.nx .wrap{max-width:var(--measure);display:grid;gap:.8rem;grid-template-columns:1fr}
.nx a[data-next],.nx a[data-prev]{display:flex;flex-direction:column;gap:.2rem;padding:1.05rem 1.2rem;background:var(--card);border:1px solid var(--line);border-radius:14px;text-decoration:none;box-shadow:var(--sh-1);transition:.16s}
.nx a[data-next]:hover,.nx a[data-prev]:hover{border-color:var(--acc);transform:translateY(-2px);box-shadow:var(--sh-2)}
.nx a[data-next] span,.nx a[data-prev] span{font-size:.76rem;font-weight:700;color:var(--ink-3);letter-spacing:.03em}
.nx a[data-next] b,.nx a[data-prev] b{font-family:var(--ser);font-weight:700;font-size:1rem;color:var(--ink);line-height:1.35}
.nx a[data-next]:hover b,.nx a[data-prev]:hover b{color:var(--acc-ink)}
.nx a[data-next]{text-align:right}
.nx .home{grid-column:1/-1;text-align:center;margin:1rem 0 0}
.nx .home a{display:inline-flex;align-items:center;gap:.4rem;padding:.6rem 1.2rem;border:1px solid var(--line-2);border-radius:999px;color:var(--ink-2);text-decoration:none;font-size:.88rem;background:var(--card)}
.nx .home a::before{content:"☰"}
.nx .home a:hover{border-color:var(--acc);color:var(--acc-ink)}

/* ===== footer ===== */
.foot{border-top:1px solid var(--line);margin-top:2rem;padding:2.2rem 0 3.5rem;text-align:center;color:var(--ink-3);font-size:.84rem;line-height:1.7}
.foot b{color:var(--ink-2)}
.foot .wrap p{margin:.15rem 0}

/* ===== injected: TOC drawer + FAB ===== */
.scrim{position:fixed;inset:0;background:rgba(20,18,14,.46);opacity:0;visibility:hidden;transition:.25s;z-index:70}
.scrim.on{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;left:0;height:100%;width:min(87vw,354px);background:var(--card);border-right:1px solid var(--line);transform:translateX(-103%);transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:80;display:flex;flex-direction:column;box-shadow:var(--sh-2)}
.drawer.on{transform:none}
.drawer__h{padding:1.15rem 1.25rem .8rem;border-bottom:1px solid var(--line)}
.drawer__h b{font-family:var(--ser);font-weight:700;font-size:1rem;color:var(--ink);display:block;line-height:1.35}
.drawer__h span{font-size:.78rem;color:var(--ink-3)}
.drawer__l{overflow-y:auto;padding:.5rem .5rem 2.5rem;flex:1}
.drawer__pt{font-size:.68rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--acc-ink);padding:.9rem .75rem .3rem}
.drawer__e{display:flex;gap:.6rem;align-items:baseline;padding:.5rem .75rem;border-radius:9px;text-decoration:none;color:var(--ink-2);font-size:.9rem;line-height:1.45}
.drawer__e:hover{background:var(--tint)}
.drawer__e .n{font-variant-numeric:tabular-nums;color:var(--ink-3);font-size:.8rem;min-width:1.7em}
.drawer__e.cur{background:var(--tint);color:var(--ink);font-weight:600}
.drawer__e.cur .n{color:var(--acc-ink)}
.fab{position:fixed;right:1rem;bottom:1rem;width:46px;height:46px;border-radius:50%;background:var(--card);border:1px solid var(--line-2);color:var(--ink-2);display:grid;place-items:center;cursor:pointer;box-shadow:var(--sh-2);opacity:0;visibility:hidden;transition:.2s;z-index:40;font-size:1.1rem}
.fab.on{opacity:1;visibility:visible}
.fab:hover{color:var(--acc-ink);border-color:var(--acc);transform:translateY(-2px)}

@media(min-width:640px){.nx .wrap{grid-template-columns:1fr 1fr}.nx .home{}}
@media(max-width:520px){.bar__home{max-width:42vw}.bar__n{display:none}}
@media print{.bar,.pbar,.drawer,.scrim,.fab,.nx{display:none!important}body{background:#fff}.box,.cl,.stats{break-inside:avoid}.art h2{break-after:avoid}}

/* ===================== ePub / paged (page-flip) mode ===================== */
html.paged, html.paged body{height:100%;max-height:100vh;overflow:hidden}
html.paged .fab{display:none!important}
html.paged .foot{display:none}
html.paged .art{position:fixed;left:0;right:0;top:56px;bottom:46px;padding:0;margin:0;overflow:hidden;background:var(--pg)}
html.paged .book-stage{position:absolute;top:0;left:0;height:100%;margin:0;max-width:none;box-sizing:border-box;column-fill:auto;transition:transform .44s cubic-bezier(.22,.61,.36,1);will-change:transform;font-size:var(--fs)}
html.paged .book-stage.noanim{transition:none}
html.paged .art__meta{margin-top:.2rem}
/* keep large blocks whole where possible */
html.paged .callout,html.paged .box,html.paged .box--intro_q,html.paged .box--objectives,html.paged .box--reflection,html.paged .keybox,html.paged .lead,html.paged .obj{break-inside:avoid}
html.paged figure.tbl{overflow:hidden;break-inside:auto;box-shadow:none}
html.paged figure.tbl table{font-size:.8rem}
html.paged figure.tbl th{white-space:normal}
html.paged figure.tbl tr{break-inside:avoid}
html.paged .art>.book-stage>h1{break-after:avoid}
html.paged .art h2,html.paged .prose h2,html.paged .art>.wrap>h2{break-after:avoid}
/* spine shadow (spread only) */
.book-spine{position:fixed;top:56px;bottom:46px;left:50%;width:74px;transform:translateX(-50%);pointer-events:none;z-index:5;opacity:.55;display:none;background:radial-gradient(ellipse 60% 100% at center, color-mix(in srgb,var(--ink) 13%,transparent), transparent 70%)}
html.paged.spread .book-spine{display:block}
/* turn zones */
.turn-zone{position:fixed;top:56px;bottom:46px;width:12%;z-index:6;cursor:pointer;transition:background .15s}
.turn-zone.prev{left:0}.turn-zone.next{right:0}
.turn-zone.prev:hover{background:linear-gradient(to right, color-mix(in srgb,var(--acc) 9%,transparent), transparent)}
.turn-zone.next:hover{background:linear-gradient(to left, color-mix(in srgb,var(--acc) 9%,transparent), transparent)}
.turn-zone.off{opacity:.3;pointer-events:none}
/* pager bar */
.pager-bar{position:fixed;left:0;right:0;bottom:0;height:46px;display:none;align-items:center;justify-content:center;gap:.9rem;background:color-mix(in srgb,var(--pg) 90%,transparent);backdrop-filter:saturate(1.3) blur(10px);-webkit-backdrop-filter:saturate(1.3) blur(10px);border-top:1px solid var(--line);z-index:7}
html.paged .pager-bar{display:flex}
.pager-bar button{width:34px;height:34px;border:1px solid var(--line-2);background:var(--card);color:var(--ink-2);border-radius:9px;cursor:pointer;font-size:1rem;line-height:1;display:grid;place-items:center;transition:.15s}
.pager-bar button:hover:not(:disabled){border-color:var(--acc);color:var(--acc-ink)}
.pager-bar button:disabled{opacity:.32;cursor:default}
.pager-bar .pgnum{font-family:var(--san);font-size:.82rem;color:var(--ink-3);font-variant-numeric:tabular-nums;min-width:6.5em;text-align:center}
.pager-bar .pgnum b{color:var(--ink);font-weight:700}
/* scroll mode hides paged chrome */
html.scroll .pager-bar,html.scroll .book-spine,html.scroll .turn-zone{display:none!important}
/* mode toggle active state */
.iconbtn.mode-on{border-color:var(--acc);color:var(--acc-ink);background:var(--tint)}
@media print{.book-spine,.turn-zone,.pager-bar{display:none!important}html.paged,html.paged body{overflow:visible;height:auto}html.paged .art{position:static}html.paged .book-stage{position:static;column-width:auto!important;column-count:1!important;transform:none!important;height:auto!important}}

html.paged .bar{position:fixed;top:0;left:0;right:0;z-index:50}

/* ===================== ePub book frame (open-book look) ===================== */
html.paged .art{background:radial-gradient(135% 130% at 50% -12%, var(--pg2), var(--pg) 62%);perspective:2400px}
.leaf{position:absolute;top:0;background:var(--card);border-radius:6px;box-shadow:0 12px 34px rgba(40,36,28,.17),0 2px 7px rgba(40,36,28,.10);z-index:1;pointer-events:none;display:none}
html.paged .leaf{display:block}
html.scroll .leaf,html.scroll .book-gutter,html.scroll .turn-shade{display:none!important}
html.paged.spread .leaf.l{border-top-right-radius:2px;border-bottom-right-radius:2px}
html.paged.spread .leaf.r{border-top-left-radius:2px;border-bottom-left-radius:2px}
html.paged:not(.spread) .leaf.r{display:none}
[data-theme=dark] .leaf{box-shadow:0 12px 34px rgba(0,0,0,.55),0 2px 7px rgba(0,0,0,.42)}
.leaf::after{content:"";position:absolute;top:0;bottom:0;width:22px;pointer-events:none}
html.paged.spread .leaf.l::after{right:0;background:linear-gradient(90deg,transparent,rgba(40,36,28,.10))}
html.paged.spread .leaf.r::after{left:0;background:linear-gradient(270deg,transparent,rgba(40,36,28,.10))}
.book-gutter{position:absolute;top:0;bottom:0;z-index:2;pointer-events:none;display:none;background:linear-gradient(90deg,transparent,rgba(40,36,28,.14) 42%,rgba(40,36,28,.16) 50%,rgba(40,36,28,.14) 58%,transparent)}
html.paged.spread .book-gutter{display:block}
[data-theme=dark] .book-gutter{background:linear-gradient(90deg,transparent,rgba(0,0,0,.45) 42%,rgba(0,0,0,.5) 50%,rgba(0,0,0,.45) 58%,transparent)}
html.paged .book-stage{z-index:3;background:transparent}
/* page-turn light sweep */
.turn-shade{position:absolute;top:0;bottom:0;left:0;right:0;z-index:4;pointer-events:none;opacity:0}
html.paged.turn-next .turn-shade{opacity:1;background:linear-gradient(90deg,rgba(40,36,28,.20),transparent 24%);animation:sweepN .46s ease forwards}
html.paged.turn-prev .turn-shade{opacity:1;background:linear-gradient(270deg,rgba(40,36,28,.20),transparent 24%);animation:sweepP .46s ease forwards}
@keyframes sweepN{from{transform:translateX(-45%)}to{transform:translateX(125%)}}
@keyframes sweepP{from{transform:translateX(45%)}to{transform:translateX(-125%)}}