/* =====================================================================
   SENSE — Story page (story.html): a surgeon's day, chapter by chapter.
   Page-only styles on top of sense.css. The light behind the chapters is a
   fixed layer that cross-fades between five times of day; text colours
   follow it through the custom properties on .st[data-tone].
   ===================================================================== */

/* ---------- hero: the chapter list ---------- */
.st-hero .phero-t{max-width:15ch}
.st-hero .phero-in{gap:clamp(16px,1.8vw,22px)}
.st-toc{width:100%;margin-top:clamp(20px,3.4vw,46px)}
.st-toc-l{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--line-d)}
.st-toc-l li{min-width:0}
.st-toc-l a{position:relative;display:grid;align-content:start;gap:10px;height:100%;padding:22px 16px 8px 0;color:var(--d2);transition:color .25s}
.st-toc-l li + li a{padding-left:18px;border-left:1px solid var(--line-d)}
.st-toc-l a::before{content:"";position:absolute;top:-2px;left:0;width:44px;height:4px;border-radius:0 0 3px 3px;background:var(--c);transition:width .55s var(--ease)}
.st-toc-l li + li a::before{left:18px}
.st-toc-l a:hover{color:var(--d1)}
.st-toc-l a:hover::before{width:calc(100% - 18px)}
.st-toc .tk{display:none}
.st-toc .nv-k{font-family:var(--f-d);font-weight:760;font-stretch:80%;font-size:clamp(24px,2.3vw,34px);line-height:1;letter-spacing:-.01em;color:var(--c);font-feature-settings:"tnum";white-space:nowrap}
html.lang-bn .st-toc .nv-k{font-weight:680;font-stretch:90%;letter-spacing:0;line-height:1.15;font-size:clamp(23px,2.1vw,31px)}
.st-toc .nv-t{font-size:15px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
html.lang-bn .st-toc .nv-t{font-size:16px;line-height:1.55}
@media (max-width:900px){
  .st-toc-l{grid-template-columns:1fr}
  .st-toc-l a,.st-toc-l li + li a{grid-template-columns:7.2em minmax(0,1fr);align-items:center;gap:12px;min-height:54px;padding:10px 0 10px 16px;border-left:0;border-bottom:1px solid var(--line-d)}
  .st-toc-l a::before,.st-toc-l li + li a::before{top:50%;left:0;width:4px;height:22px;margin-top:-11px;border-radius:3px}
  .st-toc-l a:hover::before{width:4px}
  .st-toc .nv-k{font-size:21px}
  html.lang-bn .st-toc .nv-k{font-size:20px}
  .st-toc .nv-t{-webkit-line-clamp:2}
}

/* ---------- the story wrapper: scene colours ---------- */
.st{position:relative;--fg:var(--t1);--fg2:var(--t2);--ln:var(--line-l);--inv:var(--paper);--grid:rgba(17,18,27,.045);color:var(--fg)}
.st[data-tone="dark"]{--fg:var(--d1);--fg2:var(--d2);--ln:var(--line-d);--inv:var(--ink);--grid:rgba(243,239,230,.05)}
.st[data-tone="light"] :focus-visible{outline-color:var(--ink)}
.st .st-bar :focus-visible{outline-color:var(--thyroid)}

/* the light: one fixed layer per time of day; the current one fades in over the last */
.st-sky{position:fixed;left:0;right:0;top:0;height:100vh;height:100lvh;z-index:-1;pointer-events:none;overflow:hidden;overflow:clip}
.sky{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .8s var(--ease-io),visibility 0s linear .8s}
.sky.on{opacity:1;visibility:visible;z-index:2;transition:opacity .8s var(--ease-io),visibility 0s}
.sky.was{opacity:1;visibility:visible;z-index:1;transition:none}
.sky::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,var(--g) 0 1px,transparent 1px 96px)}
.sky-dawn,.sky-day,.sky-morning{--g:rgba(17,18,27,.04)}
.sky-night,.sky-lamp{--g:rgba(243,239,230,.045)}
.sky-dawn{background:
  radial-gradient(110% 60% at 82% 112%,rgba(255,178,30,.62) 0%,rgba(255,178,30,.22) 42%,rgba(255,178,30,0) 70%),
  radial-gradient(60% 40% at 96% 104%,rgba(255,90,54,.32) 0%,rgba(255,90,54,0) 70%),
  radial-gradient(80% 50% at 0% 0%,rgba(143,116,255,.10) 0%,rgba(143,116,255,0) 70%),
  linear-gradient(180deg,#EFE6DB 0%,#F4EADC 50%,#F7E3C4 100%)}
.sky-day{background:
  radial-gradient(70% 55% at 50% -10%,rgba(255,255,255,.95) 0%,rgba(255,255,255,0) 72%),
  radial-gradient(55% 45% at 100% 8%,rgba(62,197,255,.24) 0%,rgba(62,197,255,0) 70%),
  radial-gradient(50% 40% at 0% 100%,rgba(62,197,255,.10) 0%,rgba(62,197,255,0) 70%),
  linear-gradient(180deg,#F5F3EE 0%,#ECEFEE 100%)}
.sky-night{background:
  radial-gradient(75% 55% at 10% -6%,rgba(143,116,255,.34) 0%,rgba(143,116,255,0) 70%),
  radial-gradient(55% 45% at 100% 105%,rgba(62,197,255,.14) 0%,rgba(62,197,255,0) 70%),
  linear-gradient(180deg,#0E0D1A 0%,#0B0C12 100%)}
.sky-lamp{background:
  radial-gradient(60% 50% at 90% 8%,rgba(25,211,162,.22) 0%,rgba(25,211,162,0) 70%),
  radial-gradient(70% 55% at 0% 100%,rgba(62,197,255,.15) 0%,rgba(62,197,255,0) 70%),
  linear-gradient(180deg,#0C141D 0%,#0E1820 100%)}
.sky-morning{background:
  radial-gradient(70% 50% at 100% -4%,rgba(255,90,54,.20) 0%,rgba(255,90,54,0) 70%),
  radial-gradient(55% 45% at 0% 6%,rgba(255,178,30,.16) 0%,rgba(255,178,30,0) 70%),
  linear-gradient(180deg,#F6ECE3 0%,#F3EFE6 70%)}

/* sunrise between the dark hero and the first (dawn) chapter */
.st-sunrise{height:clamp(150px,19vw,290px);background:linear-gradient(180deg,#0B0C12 0%,#1A1630 14%,#382A5E 30%,#83508A 46%,#E2674C 62%,#FF9D3C 75%,rgba(255,178,30,.42) 88%,rgba(255,178,30,0) 100%)}
/* hands over to the final band's paper wave edge */
.st-end{height:clamp(64px,8vw,120px);background:linear-gradient(180deg,rgba(243,239,230,0),var(--paper) 72%)}

/* ---------- layout: sticky index + chapters ---------- */
.st-in{position:relative;max-width:calc(var(--maxw) + 2*var(--gut));margin:0 auto;padding:0 var(--gut)}
.st-chs{min-width:0}
.st-rail{display:none}
@media (min-width:1180px){
  .st-in{display:grid;grid-template-columns:clamp(190px,15vw,230px) minmax(0,1fr);column-gap:clamp(44px,4.6vw,88px)}
  .st-rail{display:block;position:sticky;top:calc(var(--hdr-h) + 34px);align-self:start;margin-top:clamp(84px,9vw,140px);padding-bottom:40px}
}
.st-rail-h{font-family:var(--f-m);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--fg2);margin-bottom:12px}
html.lang-bn .st-rail-h{font-family:var(--f-b);font-size:15px;letter-spacing:0;font-weight:600}
.st-rail ol{display:grid;gap:2px}
.st-rail a{display:grid;grid-template-columns:7px minmax(0,1fr);column-gap:14px;row-gap:3px;padding:9px 0;min-height:58px;color:var(--fg2);transition:color .25s}
.st-rail a:hover,.st-rail a[aria-current]{color:var(--fg)}
.st-rail .tk{grid-row:1 / span 2;position:relative;width:6px;border-radius:6px;background:var(--ln);overflow:hidden;overflow:clip}
.st-rail .nv-k{justify-self:start;font-family:var(--f-d);font-weight:700;font-size:15px;line-height:1.25;color:var(--fg);font-feature-settings:"tnum";border-radius:999px;padding:1px 0;transition:background-color .3s,color .3s,padding .3s}
html.lang-bn .st-rail .nv-k{font-weight:620;font-size:15.5px}
.st-rail a[aria-current] .nv-k{background:var(--c);color:var(--ink);padding:1px 9px}
.st-rail .nv-t{font-size:14px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
html.lang-bn .st-rail .nv-t{font-size:15px;line-height:1.5}

/* reading progress: the bars fill as each chapter is read */
.tk-f{position:absolute;inset:0;background:var(--c);transform:scaleY(0);transform-origin:50% 0}
@keyframes st-fill{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.sda .tk-f{animation:st-fill linear both;animation-range:entry 55% exit 55%}

/* ---------- phones & tablets: the bar under the header ---------- */
.st-bar{position:fixed;left:0;right:0;top:var(--hdr-h);z-index:58;background:var(--ink);color:var(--d1);
  box-shadow:inset 0 1px 0 var(--line-d),0 14px 30px rgba(11,12,18,.22);transform:translateY(calc(-100% - 4px));visibility:hidden;
  transition:transform .45s var(--ease),visibility 0s linear .45s}
.st-bar.is-on{transform:none;visibility:visible;transition:transform .45s var(--ease),visibility 0s}
@media (min-width:1180px){.st-bar{display:none}}
.st-bar-btn{display:flex;align-items:center;gap:12px;width:100%;min-height:50px;padding:0 var(--gut);text-align:left}
.eq{display:flex;align-items:flex-end;gap:3px;height:24px;flex:none}
.eq-b{position:relative;width:4px;height:60%;border-radius:3px;background:rgba(243,239,230,.2);overflow:hidden;overflow:clip}
.eq-b:nth-child(1){height:46%}.eq-b:nth-child(2){height:76%}.eq-b:nth-child(3){height:100%}.eq-b:nth-child(4){height:70%}.eq-b:nth-child(5){height:40%}
.eq-b .tk-f{transform-origin:50% 100%}
.st-bar-now{display:flex;align-items:center;gap:10px;min-width:0;flex:1}
.st-bar-now .nv-k{flex:none;background:var(--c);color:var(--ink);border-radius:999px;padding:2px 10px;font-weight:700;font-size:14px;line-height:1.35;font-feature-settings:"tnum"}
html.lang-bn .st-bar-now .nv-k{font-size:15px;font-weight:650}
.st-bar-now .nv-t{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:15px;font-weight:600}
html.lang-bn .st-bar-now .nv-t{font-size:16px;font-weight:560}
.st-bar-chev{width:20px;height:20px;flex:none;transition:transform .35s var(--ease)}
.st-bar-btn[aria-expanded="true"] .st-bar-chev{transform:rotate(180deg)}
.st-bar-list{max-height:calc(100svh - var(--hdr-h) - 150px);overflow-y:auto;overscroll-behavior:contain;padding:0 var(--gut) 10px;border-top:1px solid var(--line-d)}
.st-bar-list a{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:12px;min-height:54px;padding:8px 0;border-bottom:1px solid var(--line-d);color:var(--d2)}
.st-bar-list li:last-child a{border-bottom:0}
.st-bar-list .tk{display:none}
.st-bar-list .nv-k{font-weight:700;font-size:14px;line-height:1.35;padding:2px 10px;border-radius:999px;box-shadow:inset 0 0 0 1.5px var(--c);color:var(--d1);font-feature-settings:"tnum"}
html.lang-bn .st-bar-list .nv-k{font-size:15px;font-weight:620}
.st-bar-list .nv-t{font-size:15px;line-height:1.4}
html.lang-bn .st-bar-list .nv-t{font-size:16px;line-height:1.5}
.st-bar-list a[aria-current]{color:var(--d1)}
.st-bar-list a[aria-current] .nv-k{background:var(--c);color:var(--ink);box-shadow:none}

/* ---------- chapters ---------- */
.sc{position:relative;padding-top:clamp(84px,9vw,140px);scroll-margin-top:calc(var(--hdr-h) + 12px)}
.sc:focus{outline:none}
@media (max-width:1179px){.sc{scroll-margin-top:calc(var(--hdr-h) + 40px)}}
.sc-head{display:grid;justify-items:start;gap:clamp(14px,1.6vw,22px);margin-bottom:clamp(30px,4vw,58px)}
.sc-open{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 26px}

/* the clock: a huge time in the chapter's colour, rolling into place */
.ck{--lh:1em;margin:0;font-family:var(--f-d);font-weight:800;font-stretch:76%;font-size:clamp(4.6rem,12vw,11rem);line-height:1;letter-spacing:-.02em}
html.lang-bn .ck{font-weight:700;font-stretch:88%;letter-spacing:0;font-size:clamp(4.2rem,11vw,10rem)}
.ck-pill{display:inline-flex;align-items:center;gap:.1em;background:var(--c);color:var(--ink);border-radius:999px;padding:.1em .32em .1em .3em}
.ck-num{display:inline-flex;align-items:center;font-feature-settings:"tnum";line-height:var(--lh)}
.odo-d{position:relative;display:inline-block;vertical-align:top;height:var(--lh);overflow:hidden;overflow-x:visible;overflow-y:clip}
.odo-w{display:block;visibility:hidden;line-height:var(--lh)}
.odo-s{position:absolute;left:50%;top:0;display:block;white-space:pre;text-align:center;line-height:var(--lh);transform:translate(-50%,0)}
.ck.is-on .odo-s,html:not(.js) .odo-s{transform:translate(-50%,calc(var(--t) * var(--lh) * -1))}
.js .ck.is-on .odo-s{transition:transform calc(1s + var(--k) * .17s) cubic-bezier(.2,.78,.16,1)}
.odo-x{display:inline-block;vertical-align:top;height:var(--lh);line-height:var(--lh);margin:0 -.02em;transform:translateY(-.05em)}
.ck-mer{align-self:flex-start;margin-top:.62em;margin-left:.06em;font-family:var(--f-m);font-weight:500;font-stretch:100%;font-size:max(14px,.12em);letter-spacing:.06em;line-height:1;
  padding:.45em .65em;border-radius:999px;background:var(--ink);color:var(--c)}
html.lang-bn .ck-mer{order:-1;margin-left:0;margin-right:.06em;font-family:var(--f-b);font-weight:650;font-size:max(16px,.14em);letter-spacing:0;line-height:1.15;padding:.35em .6em}
.ck-n .ck-mer{order:-1;margin-left:0;margin-right:.08em}
.sc-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;padding-bottom:.5em;font-family:var(--f-m);font-size:12.5px;letter-spacing:.07em;text-transform:uppercase;line-height:1.45;color:var(--fg2)}
html.lang-bn .sc-meta{font-family:var(--f-b);font-size:16.5px;letter-spacing:0;text-transform:none;font-weight:550}
.sc-no{display:inline-flex;align-items:center;gap:9px;color:var(--fg)}
.sc-no::before{content:"";width:16px;height:4px;border-radius:2px;background:var(--c)}
.sc-place{display:inline-flex;align-items:flex-start;gap:7px}
.sc-place .ic{width:16px;height:16px;margin-top:.12em;flex:none}
.sc-t{font-family:var(--f-d);font-weight:780;font-stretch:84%;font-size:clamp(2.5rem,5vw,4.8rem);line-height:.98;letter-spacing:-.032em;max-width:16ch;text-wrap:balance}
html.lang-bn .sc-t{font-weight:720;letter-spacing:0;line-height:1.22;font-size:clamp(2.15rem,4.3vw,4.1rem);max-width:17ch}
.sc-sub{font-size:clamp(18px,1.55vw,23px);line-height:1.5;color:var(--fg2);max-width:32em}
html.lang-bn .sc-sub{line-height:1.7}

/* body: photo beside the text, or a wide photo above it */
.sc-body{display:grid;gap:clamp(34px,4.4vw,64px);align-items:start}
@media (min-width:900px){
  .sc-side .sc-body{grid-template-columns:minmax(0,5fr) minmax(0,6fr)}
  .sc-side.sc-alt .sc-media{order:2}
  .sc-side .sc-media{position:sticky;top:calc(var(--hdr-h) + 84px)}
  .sc-spread .sc-text{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);column-gap:clamp(34px,4.4vw,64px);align-items:start}
  .sc-spread .sc-q{grid-column:1;grid-row:1 / span 3}
  .sc-spread .sc-paras,.sc-spread .sc-more{grid-column:2}
}
@media (min-width:1180px){.sc-side .sc-media{top:calc(var(--hdr-h) + 40px)}}

/* photos: rounded frame with a colour block behind it */
.ph-m,.ph-s{position:relative;margin:0;isolation:isolate}
.ph-m{--o:clamp(10px,1.4vw,22px);border-radius:clamp(22px,2.4vw,34px)}
.ph-m::before{content:"";position:absolute;z-index:-1;inset:var(--o) calc(var(--o) * -1) calc(var(--o) * -1) var(--o);border-radius:inherit;background:var(--c)}
.sc-alt .ph-m::before{inset:var(--o) var(--o) calc(var(--o) * -1) calc(var(--o) * -1)}
.ph-btn{position:relative;display:block;width:100%;border-radius:inherit;overflow:hidden;overflow:clip;background:var(--paper3);cursor:zoom-in}
.ph-btn picture{display:contents}
.ph-btn img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease)}
.ph-m .ph-btn{aspect-ratio:4/5}
@media (min-width:900px){.sc-side .ph-m .ph-btn{aspect-ratio:3/4}}
.sc-spread .ph-m .ph-btn{aspect-ratio:4/3}
@media (min-width:900px){.sc-spread .ph-m .ph-btn{aspect-ratio:21/10}}
.is-cut .ph-btn{background:var(--c)}
.is-cut img{object-fit:contain;object-position:50% 100%}
.ph-zoom{position:absolute;right:12px;top:12px;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:rgba(11,12,18,.74);color:var(--d1);transition:transform .35s var(--ease)}
.ph-zoom .ic{width:20px;height:20px}
@media (hover:hover){
  .ph-btn:hover img{transform:scale(1.035)}
  .ph-btn:hover .ph-zoom{transform:scale(1.1)}
}
.ph-m figcaption,.ph-s figcaption{position:absolute;left:12px;bottom:12px;max-width:calc(100% - 24px);font-family:var(--f-m);font-size:12px;letter-spacing:.03em;line-height:1.35;
  background:var(--ink);color:var(--d1);padding:6px 10px;border-radius:9px;pointer-events:none}
html.lang-bn .ph-m figcaption,html.lang-bn .ph-s figcaption{font-family:var(--f-b);font-size:14px;letter-spacing:0;line-height:1.45}
.sc-more{display:flex;flex-wrap:wrap;gap:16px;margin-top:clamp(30px,3.6vw,48px)}
.ph-s{width:min(100%,330px);border-radius:20px}
.ph-s .ph-btn{aspect-ratio:4/5}
.ph-s.is-wide .ph-btn{aspect-ratio:4/3}
@media (max-width:899px){.sc-more{justify-content:flex-end}.ph-s{width:74%}}

/* quote + text */
.sc-q{margin:0 0 clamp(26px,3vw,40px);max-width:24em}
.q-wave{width:92px;height:14px;margin-bottom:14px;color:var(--c);overflow:visible}
.q-wave path{fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round}
.sc-q p{font-family:var(--f-q);font-style:italic;font-size:clamp(1.42rem,2.1vw,2rem);line-height:1.45;color:var(--fg)}
html.lang-bn .sc-q p{font-size:clamp(1.36rem,1.95vw,1.85rem);line-height:1.7}
.sc-paras p{font-size:18px;line-height:1.7;max-width:34em}
.sc-paras p + p{margin-top:1.05em}
.sc-paras p:first-child{font-size:clamp(19px,1.45vw,21.5px);line-height:1.6}
html.lang-bn .sc-paras p{font-size:18.5px;line-height:1.85}
html.lang-bn .sc-paras p:first-child{font-size:clamp(19.5px,1.5vw,22px);line-height:1.8}

/* ---------- between chapters: a breathing wave + "next chapter" ---------- */
.sc-next{position:relative;display:grid;place-items:center;height:clamp(130px,13vw,190px);margin-top:clamp(64px,8vw,120px)}
.wv{position:absolute;inset:0;width:100%;height:100%;overflow:visible;transform-origin:50% 50%}
.wv path{fill:none;stroke-linecap:round;vector-effect:non-scaling-stroke}
.wv1{stroke:var(--c2);stroke-width:2.4}
.wv2{stroke:var(--c);stroke-width:1.6;opacity:.85}
.wv3{stroke:var(--fg2);stroke-width:1.1;opacity:.4}
.js .wv path{stroke-dasharray:1;stroke-dashoffset:1}
.js .was-in .wv path{stroke-dashoffset:0;transition:stroke-dashoffset 1.9s var(--ease)}
.js .was-in .wv2{transition-delay:.12s}
.js .was-in .wv3{transition-delay:.24s}
@media (hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){
  .sc-next .wv{animation:st-breathe 5.4s var(--ease-io) 1.9s infinite alternate;animation-play-state:paused}
  .sc-next.is-in .wv{animation-play-state:running}
}
@keyframes st-breathe{to{transform:scaleY(.4)}}
.nx{position:relative;z-index:1;display:inline-flex;align-items:center;gap:12px;min-height:56px;padding:0 14px 0 22px;border-radius:999px;background:var(--fg);color:var(--inv);
  font-weight:650;font-size:16px;line-height:1.2;box-shadow:0 10px 30px rgba(11,12,18,.16);transition:transform .35s var(--ease),background-color .3s,color .3s}
html.lang-bn .nx{font-size:17px;font-weight:600}
.nx-pill{background:var(--c);color:var(--ink);border-radius:999px;padding:3px 11px;font-weight:750;font-feature-settings:"tnum"}
html.lang-bn .nx-pill{font-weight:650}
.nx .ic{width:20px;height:20px;transition:transform .35s var(--ease)}
.nx:hover{transform:translateY(-2px)}
.nx:hover .ic{transform:translateY(3px)}

/* loading placeholder */
.st-skel{display:grid;gap:22px;padding:clamp(84px,9vw,140px) 0 50vh}
.st-skel i{display:block;height:20px;width:min(420px,70%);border-radius:10px;background:var(--ln)}
.st-skel i:first-child{width:min(300px,64%);height:clamp(84px,11vw,150px);border-radius:999px}
.st-skel i:nth-child(2){width:min(680px,92%);height:56px}

/* ---------- desktop extras: gentle photo parallax (compositor-only) ---------- */
@supports (animation-timeline: view()){
  @media (hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){
    .ph-m .ph-btn img{scale:1.1;animation:st-drift linear both;animation-timeline:view();animation-range:cover}
    @keyframes st-drift{from{translate:0 -4.5%}to{translate:0 4.5%}}
  }
}

/* ---------- photo viewer ---------- */
html.lb-open{overflow:hidden}
.lb{position:fixed;inset:0;width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:0;border:0;background:rgba(11,12,18,.96);color:var(--d1);overscroll-behavior:contain}
.lb::backdrop{background:rgba(11,12,18,.5)}
.lb[open]{display:block;animation:st-lb .3s var(--ease)}
@keyframes st-lb{from{opacity:0}}
.lb-in{position:relative;height:100%;display:grid;grid-template-rows:auto minmax(0,1fr);padding:max(10px,env(safe-area-inset-top)) calc(var(--gut) + 64px) max(18px,env(safe-area-inset-bottom))}
.lb-count{display:flex;align-items:center;justify-content:center;min-height:52px;font-family:var(--f-m);font-size:13px;letter-spacing:.06em;color:var(--d2)}
html.lang-bn .lb-count{font-family:var(--f-b);font-size:15px;letter-spacing:0}
.lb-fig{display:grid;grid-template-rows:minmax(0,1fr) auto;justify-items:center;gap:14px;min-height:0;margin:0}
.lb-img{max-width:100%;max-height:100%;width:auto;height:auto;min-height:0;object-fit:contain;align-self:center;border-radius:16px}
.lb-cap{font-size:15px;line-height:1.45;color:var(--d2);text-align:center;max-width:40em}
html.lang-bn .lb-cap{font-size:16px;line-height:1.6}
.lb-btn{position:absolute;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:rgba(243,239,230,.1);color:var(--d1);
  box-shadow:inset 0 0 0 1px rgba(243,239,230,.2);transition:background-color .2s}
.lb-btn:hover{background:rgba(243,239,230,.2)}
.lb-btn .ic{width:22px;height:22px}
.lb-x{top:max(10px,env(safe-area-inset-top));right:var(--gut)}
.lb-x svg{width:24px;height:24px}
.lb-x path{fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round}
.lb-prev,.lb-next{top:50%;margin-top:-26px}
.lb-prev{left:var(--gut)}
.lb-prev .ic{transform:rotate(180deg)}
.lb-next{right:var(--gut)}
.lb.is-single .lb-prev,.lb.is-single .lb-next{display:none}
@media (max-width:720px){
  .lb-in{padding:max(10px,env(safe-area-inset-top)) var(--gut) calc(max(18px,env(safe-area-inset-bottom)) + 66px)}
  .lb-count{justify-content:flex-start}
  .lb-prev,.lb-next{top:auto;bottom:max(14px,env(safe-area-inset-bottom));margin:0}
  .lb-prev{left:calc(50% - 64px)}
  .lb-next{right:calc(50% - 64px)}
}

/* ---------- reduced motion: everything in its final state ---------- */
@media (prefers-reduced-motion:reduce){
  .odo-s{transform:translate(-50%,calc(var(--t) * var(--lh) * -1))!important}
  .js .wv path{stroke-dashoffset:0}
  .sky{transition:none}
}
/* link under a chapter's text (e.g. the published paper) */
.sc-link{margin-top:22px}
.sc-link a{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-weight:650;border-bottom:2px solid var(--c);line-height:1.35}
.sc-link a:hover{border-bottom-width:3px}
.sc-link .ic{width:16px;height:16px;flex:none}