/* The Labour Codex — a grandmother's scrapbook edition.
   Pastel paper, pressed daisies, lace trim, washi tape, hand-lettered margin notes.
   Layout is unchanged from the original volume: a sticky contents column on the left
   and a single reading column on the right. */

:root{
  /* daylight */
  --bg:#f9ecee; --bg-dot:#f2c9d2; --bg-check:rgba(190,214,178,.34);
  --paper:#fffaf0; --paper-2:#fbf3e4; --lace:#fffdf8; --lace-line:#e6d6c3;
  --fg:#41322e; --muted:#6f5b55; --stitch:#e5a9b8;
  --rose:#a14a5d; --rose-soft:#f7d9df; --sage:#587a4f; --sage-soft:#e1ecd6;
  --butter:#fbefc2; --butter-ink:#7a5320; --lilac:#e8e0f4; --lilac-ink:#5d4a86;
  --sky:#dbe9f4; --ribbon:#f1b7c5;
  --note-shadow:0 6px 14px -6px rgba(120,80,70,.35);
  --card-shadow:0 14px 34px -18px rgba(120,80,70,.45);
  --f-display:"Caveat","Kalam","Segoe Print","Bradley Hand",cursive;
  --f-body:"Kalam","Caveat","Segoe Print","Bradley Hand",cursive;
  --f-hand:"Caveat","Kalam","Segoe Print","Bradley Hand",cursive;
  --lace-h:22px;
  color-scheme:light;
}
/* lamplight: the same scrapbook, read in the evening */
:root[data-theme="dark"]{
  --bg:#2a2230; --bg-dot:#3b2f42; --bg-check:rgba(120,150,120,.14);
  --paper:#372c3a; --paper-2:#31273a; --lace:#4a3d4c; --lace-line:#6a5a6a;
  --fg:#f1e6dc; --muted:#cdbbb7; --stitch:#8c6075;
  --rose:#f0a9bb; --rose-soft:#4e3445; --sage:#b4d4a5; --sage-soft:#35473a;
  --butter:#4c4330; --butter-ink:#f2d58f; --lilac:#413657; --lilac-ink:#d6c8f4;
  --sky:#2f4254; --ribbon:#c97d94;
  --note-shadow:0 6px 14px -6px rgba(0,0,0,.55);
  --card-shadow:0 14px 34px -18px rgba(0,0,0,.7);
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#2a2230; --bg-dot:#3b2f42; --bg-check:rgba(120,150,120,.14);
    --paper:#372c3a; --paper-2:#31273a; --lace:#4a3d4c; --lace-line:#6a5a6a;
    --fg:#f1e6dc; --muted:#cdbbb7; --stitch:#8c6075;
    --rose:#f0a9bb; --rose-soft:#4e3445; --sage:#b4d4a5; --sage-soft:#35473a;
    --butter:#4c4330; --butter-ink:#f2d58f; --lilac:#413657; --lilac-ink:#d6c8f4;
    --sky:#2f4254; --ribbon:#c97d94;
    --note-shadow:0 6px 14px -6px rgba(0,0,0,.55);
    --card-shadow:0 14px 34px -18px rgba(0,0,0,.7);
    color-scheme:dark;
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{
  margin:0;padding-inline:16px;background-color:var(--bg);color:var(--fg);
  font-family:var(--f-body);font-size:1.08rem;font-weight:400;line-height:1.85;
  /* soft gingham tablecloth with a scatter of little dots */
  background-image:
    radial-gradient(var(--bg-dot) 1.4px,transparent 1.6px),
    repeating-linear-gradient(0deg,var(--bg-check) 0 22px,transparent 22px 44px),
    repeating-linear-gradient(90deg,var(--bg-check) 0 22px,transparent 22px 44px);
  background-size:38px 38px,auto,auto;
  overflow-x:clip; /* clip, not hidden: hidden would turn body into a scroller and break every position:sticky */
}
a{color:var(--rose);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-style:wavy}
:focus-visible{outline:3px dotted var(--rose);outline-offset:3px;border-radius:6px}
::selection{background:var(--ribbon);color:#2c1c20}
.skip{position:absolute;left:-999px;top:.5rem;background:var(--paper);color:var(--rose);padding:.5rem 1rem;border-radius:999px;z-index:100}
.skip:focus{left:.5rem}

/* ---------- progress ribbon with a daisy that rolls along it ---------- */
.trail{position:fixed;top:env(safe-area-inset-top,0px);left:0;right:0;height:30px;z-index:70;cursor:pointer;touch-action:none;user-select:none;-webkit-tap-highlight-color:transparent}
.trail::before{content:"";position:absolute;left:0;right:0;top:0;height:7px;background:repeating-linear-gradient(90deg,var(--stitch) 0 3px,transparent 3px 9px);opacity:.55}
.trail:hover::before,.trail.drag::before{opacity:.9}
.progress{position:absolute;left:0;top:0;height:7px;width:0;pointer-events:none;will-change:width;
  background:repeating-linear-gradient(90deg,var(--ribbon) 0 10px,#fff 10px 14px)}
.progress i{position:absolute;right:-17px;top:-9px;width:34px;height:34px;background:url(../img/daisy.svg) center/contain no-repeat;
  transform:rotate(var(--spin,0deg)) scale(var(--grow,1));filter:drop-shadow(0 2px 2px rgba(0,0,0,.3));transition:scale .2s;will-change:transform}
.trail:hover .progress i,.trail:focus-visible .progress i,.trail.drag .progress i{--grow:1.2}
.trail.drag{cursor:grabbing}
.trail:focus-visible{outline-offset:-3px}

/* ---------- top bar: a strip of paper with lace hanging from it ---------- */
.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:60;margin-inline:-16px;padding:1rem 18px calc(.55rem + 2px);
  display:flex;gap:.75rem;align-items:center;justify-content:space-between;background:var(--paper);
  border-bottom:2px dashed var(--stitch)}
.topbar::after{content:"";position:absolute;left:0;right:0;top:100%;height:var(--lace-h);pointer-events:none;
  background:url(../img/lace-edge.svg) repeat-x top left/30px var(--lace-h)}
.topbar .mark{font-family:var(--f-display);font-weight:700;font-size:1.7rem;color:var(--rose);
  display:inline-flex;align-items:center;gap:.5rem;text-decoration:none}
.topbar .mark::before{content:"";width:1.6rem;height:1.6rem;background:url(../img/daisy.svg) center/contain no-repeat}
.btns{display:flex;gap:.5rem}
.btn,.topbar button,.mark-done{white-space:nowrap;font:inherit;font-family:var(--f-hand);font-weight:600;font-size:1.2rem;line-height:1;color:var(--rose);
  background:var(--rose-soft);border:2px dashed var(--stitch);border-radius:999px;padding:.4rem 1rem .45rem;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease}
.topbar button:hover,.mark-done:hover{transform:translateY(-1px) rotate(-1.5deg)}
.topbar button:active,.mark-done:active{transform:scale(.96)}

/* ---------- layout ---------- */
.shell{max-width:78rem;margin-inline:auto;display:grid;grid-template-columns:17.5rem minmax(0,1fr);gap:3rem;padding-block:3.4rem 5rem}
main{min-width:0}
main:focus{outline:none}

/* ---------- contents column ---------- */
nav.spine{position:sticky;top:6.4rem;align-self:start;max-height:calc(100vh - 7.6rem);overflow:auto;font-size:.98rem;line-height:1.4;
  background:var(--paper);border-radius:16px 16px 6px 6px;padding:1.2rem 1rem 2rem 1.1rem;box-shadow:var(--card-shadow);
  outline:2px dashed var(--stitch);outline-offset:-9px;scrollbar-width:thin;scrollbar-color:var(--stitch) transparent}
nav.spine .heading{font-family:var(--f-display);font-weight:700;font-size:1.9rem;color:var(--rose);margin:.1rem 0 .2rem;text-align:center}
nav.spine .posy{font-family:var(--f-hand);font-size:1.15rem;color:var(--sage);text-align:center;margin:0 0 .4rem}
nav.spine .posy b{font-weight:700}
nav.spine h4{font-family:var(--f-hand);font-weight:700;font-size:1.3rem;letter-spacing:0;text-transform:none;color:var(--sage);
  margin:1.1rem 0 .3rem;padding:.2rem 0 .1rem;background:url(../img/daisy-chain.svg) left bottom/84px auto no-repeat;padding-bottom:1.15rem}
nav.spine a{display:block;color:var(--muted);text-decoration:none;padding:.26rem .6rem .26rem .8rem;border-radius:999px;position:relative;transition:background-color .2s,color .2s,transform .2s}
nav.spine a:hover{color:var(--fg);background:var(--rose-soft);transform:translateX(3px)}
nav.spine a.on{color:var(--rose);background:var(--rose-soft);font-weight:600}
nav.spine a.on::before{content:"";position:absolute;left:-6px;top:50%;width:16px;height:16px;margin-top:-8px;background:url(../img/blossom.svg) center/contain no-repeat}
nav.spine .done::after{content:"";display:inline-block;width:1em;height:1em;margin-left:.35em;vertical-align:-.12em;background:url(../img/daisy.svg) center/contain no-repeat}

/* ---------- the cover ---------- */
.frontis{overflow-x:clip;position:relative;text-align:center;padding:4.2rem 1rem 3.2rem;margin-bottom:4rem;isolation:isolate}
.frontis::before{content:"";position:absolute;z-index:-1;left:50%;top:50%;width:min(46rem,118vw);aspect-ratio:1;translate:-50% -50%;
  background:url(../img/lace-doily.svg) center/contain no-repeat;filter:drop-shadow(0 12px 18px rgba(120,80,70,.28));animation:slow-turn 160s linear infinite}
:root[data-theme="dark"] .frontis::before{filter:drop-shadow(0 12px 18px rgba(0,0,0,.5))}
/* the doily stays pale in lamplight, so the cover keeps dark ink */
:root[data-theme="dark"] .frontis{--fg:#41322e;--muted:#6f5b55;--rose:#a14a5d;--sage:#587a4f}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .frontis{--fg:#41322e;--muted:#6f5b55;--rose:#a14a5d;--sage:#587a4f}}
.frontis .sc{font-family:var(--f-hand);font-size:1.45rem;line-height:1.2;color:var(--sage);max-width:26rem;margin-inline:auto}
.frontis h1{font-family:var(--f-display);font-weight:700;font-size:clamp(3.6rem,11vw,7rem);line-height:.95;margin:.5rem 0 .3rem;color:var(--fg);text-wrap:balance}
.frontis h1 em{background:none;padding:0;color:var(--rose);font-weight:500}
.frontis .sub{color:var(--muted);font-size:1.08rem;max-width:30rem;margin:.8rem auto 0}
.frontis .seal{margin-top:1.4rem;font-family:var(--f-hand);font-size:1.35rem;line-height:1.25;color:var(--rose)}
.frontis .garland{display:block;width:min(30rem,78%);margin:1.6rem auto 0;height:auto}
.frontis .corner{position:absolute;z-index:-1;width:clamp(80px,13vw,140px);height:auto;pointer-events:none}
.frontis .corner.l{left:-1rem;bottom:-1.4rem;transform-origin:50% 100%;animation:sway 7s ease-in-out infinite}
.frontis .corner.r{right:.4rem;top:-1.6rem;transform-origin:50% 100%;animation:sway 8s ease-in-out -3s infinite;rotate:200deg}
.petals{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.shell,.colophon{position:relative}
.shell{z-index:1}
.petal{position:absolute;top:-40px;width:20px;height:20px;background:url(../img/blossom.svg) center/contain no-repeat;pointer-events:none;opacity:.85;
  animation:fall linear infinite;will-change:transform}
@keyframes fall{0%{transform:translate3d(0,-5vh,0) rotate(0)}50%{transform:translate3d(40px,55vh,0) rotate(180deg)}100%{transform:translate3d(-30px,112vh,0) rotate(360deg)}}
@keyframes sway{0%,100%{transform:rotate(-3deg)}50%{transform:rotate(3deg)}}
@keyframes slow-turn{to{rotate:360deg}}

/* ---------- a chapter is a scrapbook page ---------- */
.chapter{position:relative;background:var(--paper);border-radius:10px;padding:2.4rem clamp(1.1rem,4vw,2.8rem) 2.6rem;margin:0 0 calc(var(--lace-h) + 3.2rem);
  box-shadow:var(--card-shadow);outline:2px dashed var(--stitch);outline-offset:-12px}
.chapter::before,.chapter::after{content:"";position:absolute;left:0;right:0;height:var(--lace-h);pointer-events:none;background:url(../img/lace-edge.svg) repeat-x left top/30px var(--lace-h)}
.chapter::after{top:100%}
.chapter::before{bottom:100%;rotate:180deg}
.chapter>.ch-head{margin-bottom:1.5rem;padding-bottom:1.2rem;background:url(../img/daisy-chain.svg) left bottom/150px auto no-repeat;padding-bottom:2.2rem}
.ch-tag{display:inline-block;font-family:var(--f-hand);font-size:1.3rem;line-height:1.15;color:var(--butter-ink);letter-spacing:0;text-transform:none;
  background:var(--butter);padding:.2rem .9rem .3rem;margin-bottom:.4rem;rotate:-1.2deg;box-shadow:var(--note-shadow);
  clip-path:polygon(0 0,100% 0,98% 50%,100% 100%,0 100%,2% 50%)}
h2{font-family:var(--f-display);font-weight:700;font-size:clamp(2.5rem,5.6vw,3.9rem);line-height:1.05;margin:.4rem 0 0;color:var(--fg);text-wrap:balance}
h3{font-family:var(--f-display);font-weight:700;font-size:2.15rem;line-height:1.12;margin:2.4rem 0 .5rem;color:var(--rose);text-wrap:balance}
h3::before{content:"";display:inline-block;width:.85em;height:.85em;margin-right:.45em;vertical-align:-.08em;background:url(../img/blossom.svg) center/contain no-repeat}
h4{font-family:var(--f-hand);font-weight:700;font-size:1.55rem;letter-spacing:0;text-transform:none;margin:1.7rem 0 .2rem;color:var(--sage)}
p{margin:.85rem 0;hyphens:auto}
strong{font-weight:700}
em,i,cite{font-style:normal}
em{background:linear-gradient(transparent 62%,rgba(247,201,72,.38) 62%);padding:0 .08em}
.cheer i,.epigraph cite{background:none}
.k{color:var(--rose);font-weight:600}
mark{background:linear-gradient(transparent 55%,var(--butter) 55%);color:inherit;font-weight:600;padding:0 .15em}
.lede::first-letter{font-family:var(--f-display);font-weight:700;float:left;font-size:5.6rem;line-height:.75;padding:.3rem .55rem 0 0;color:var(--rose)}
ul,ol{padding-left:1.5rem;margin:.7rem 0}
ul{list-style:none;padding-left:1.7rem}
ul>li{position:relative}
ul>li::before{content:"";position:absolute;left:-1.55rem;top:.5em;width:1rem;height:1rem;background:url(../img/bullet.svg) center/contain no-repeat}
li{margin:.35rem 0}
ol li::marker{color:var(--rose);font-family:var(--f-display);font-weight:700}
.epigraph>cite,blockquote cite{display:block;font-style:normal}

/* pasted clipping with a strip of tape */
.epigraph{position:relative;margin:1.2rem 0 1.8rem;padding:1.1rem 1.3rem 1rem;background:#fff6dc;color:#4a3b28;rotate:-.5deg;box-shadow:var(--note-shadow);
  font-family:var(--f-hand);font-size:1.45rem;line-height:1.3;border-radius:3px 12px 3px 12px}
:root[data-theme="dark"] .epigraph{background:#4d4430;color:#f3e6c8}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .epigraph{background:#4d4430;color:#f3e6c8}}
.epigraph::before,.wow::before,.exam::before,.flag::before,.mnemonic::before{content:"";position:absolute;top:-13px;left:50%;width:104px;height:26px;translate:-50% 0;rotate:-2.5deg;opacity:.92;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.55) 0 7px,transparent 7px 14px),var(--tape,#cfe3c5);box-shadow:0 1px 2px rgba(0,0,0,.18);
  clip-path:polygon(2% 0,98% 0,100% 20%,97% 40%,100% 60%,97% 80%,100% 100%,2% 100%,0 80%,3% 60%,0 40%,3% 20%)}
.epigraph::before{--tape:#f5c9d3;left:18%}
.epigraph cite{font-family:var(--f-display);font-size:1.25rem;font-weight:600;color:var(--rose);margin-top:.5rem;line-height:1.3}
:root[data-theme="dark"] .epigraph cite{color:#f0b6c4}

blockquote{margin:1.3rem 0;padding:.4rem 1.3rem;background:var(--rose-soft);border-left:5px dotted var(--rose);border-radius:4px 18px 18px 4px}
blockquote cite{font-size:.9rem;color:var(--muted)}

/* margin notes: pinned slips of coloured paper, each lettered by hand */
.wow,.exam,.flag,.mnemonic{position:relative;margin:2rem 0 1.8rem;padding:1.2rem 1.4rem 1rem;box-shadow:var(--note-shadow);border-radius:4px 14px 6px 12px;transition:rotate .35s cubic-bezier(.2,.8,.2,1),translate .35s cubic-bezier(.2,.8,.2,1)}
.wow{background:var(--rose-soft);--tape:#c9ddb9;rotate:-.6deg}
.exam{background:var(--butter);--tape:#f6c7d1;rotate:.5deg}
.flag{background:var(--sage-soft);--tape:#d5cbec;rotate:-.35deg;font-size:1.06rem}
.mnemonic{background:var(--lilac);--tape:#f7e3a3;rotate:.45deg;font-size:1.08rem}
.wow:hover,.exam:hover,.flag:hover,.mnemonic:hover{rotate:0deg;translate:0 -3px}
.wow>.lab,.exam>.lab,.flag>.lab,.mnemonic>.lab{display:block;font-family:var(--f-hand);font-weight:700;font-size:1.65rem;line-height:1.1;letter-spacing:0;text-transform:none;margin-bottom:.25rem}
.wow>.lab{color:var(--rose)}
.exam>.lab{color:var(--butter-ink)}
.flag>.lab{color:var(--sage)}
.mnemonic>.lab{color:var(--lilac-ink)}
.exam>.lab::before,.wow>.lab::before,.flag>.lab::before,.mnemonic>.lab::before{content:"";display:inline-block;width:.8em;height:.8em;margin-right:.35em;background:url(../img/daisy.svg) center/contain no-repeat;vertical-align:-.04em}
.wow p:last-child,.exam p:last-child,.flag p:last-child,.mnemonic p:last-child{margin-bottom:0}
.wow .k,.exam .k,.flag .k,.mnemonic .k{color:inherit}

/* case cards: index cards, ruled in pale blue */
.case{position:relative;margin:1.7rem 0;padding:.9rem 1.3rem 1.1rem;border-radius:6px;background:
  linear-gradient(var(--rose),var(--rose)) 0 2.35rem/100% 2px no-repeat,
  repeating-linear-gradient(transparent 0 1.75rem,var(--sky) 1.75rem calc(1.75rem + 1px)),var(--paper-2);
  box-shadow:var(--note-shadow);border-left:6px solid var(--ribbon)}
.case::after{content:"";position:absolute;right:.8rem;top:.55rem;width:1.35rem;height:1.35rem;background:url(../img/forgetmenot.svg) center/contain no-repeat}
.case .nm{font-family:var(--f-display);font-weight:700;font-size:1.85rem;line-height:1.15;margin:0;color:var(--fg);padding-right:1.8rem}
.case .ct{font-family:var(--f-hand);font-size:1.3rem;line-height:1.2;color:var(--sage);margin:.7rem 0 .6rem}
.case dl{display:grid;grid-template-columns:7rem minmax(0,1fr);gap:.4rem 1rem;margin:0}
.case dt{font-family:var(--f-hand);font-weight:700;font-size:1.35rem;line-height:1.1;letter-spacing:0;text-transform:none;color:var(--rose);padding-top:.15rem}
.case dd{margin:0}
.case dd p{margin:.15rem 0}

/* tables: a pastel sampler */
.tablewrap{overflow-x:auto;margin:1.6rem 0;border-radius:14px;box-shadow:var(--note-shadow);background:var(--paper-2);scrollbar-width:thin;scrollbar-color:var(--stitch) transparent}
table{border-collapse:separate;border-spacing:0;width:100%;min-width:34rem;font-size:1rem;line-height:1.55}
th{font-family:var(--f-display);font-weight:700;font-size:1.35rem;letter-spacing:.01em;text-transform:none;color:var(--rose);text-align:left;background:var(--rose-soft);padding:.65rem .8rem;border-bottom:3px dotted var(--stitch)}
td{padding:.6rem .8rem;border-bottom:1px dotted var(--stitch);vertical-align:top}
tbody tr:nth-child(even) td{background:color-mix(in srgb,var(--sage-soft) 55%,transparent)}
tbody tr:last-child td{border-bottom:0}
td:first-child{font-weight:600}
dl.gloss{display:grid;grid-template-columns:minmax(0,11rem) minmax(0,1fr);gap:.7rem 1.4rem;margin:1.2rem 0 2rem}
dl.gloss dt{font-family:var(--f-hand);font-weight:700;font-size:1.4rem;line-height:1.1;color:var(--rose)}
dl.gloss dd{margin:0}

details{margin:1rem 0;background:var(--paper-2);border-radius:12px;box-shadow:var(--note-shadow)}
details summary{cursor:pointer;padding:.7rem 1rem;font-family:var(--f-hand);font-weight:700;font-size:1.4rem;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"";display:inline-block;width:1em;height:1em;margin-right:.4em;vertical-align:-.15em;background:url(../img/blossom.svg) center/contain no-repeat}
details[open] summary{color:var(--rose)}
details .in{padding:.3rem 1.1rem 1rem}

/* ---------- pressing a daisy ---------- */
.mark-done{margin-top:2rem;display:inline-flex;align-items:center;gap:.5rem;font-size:1.35rem}
.mark-done::before{content:"";width:1.35rem;height:1.35rem;background:url(../img/daisy.svg) center/contain no-repeat;filter:grayscale(1) opacity(.55);transition:filter .3s,transform .5s}
.mark-done[aria-pressed="true"]{background:var(--sage-soft);color:var(--sage);border-color:var(--sage)}
.mark-done[aria-pressed="true"]::before{filter:none;transform:rotate(180deg)}
.chapter .sticker{position:absolute;right:clamp(.5rem,3vw,2rem);top:-1.7rem;width:5.4rem;height:5.4rem;pointer-events:none;opacity:0;scale:.2;rotate:-60deg;
  background:url(../img/daisy.svg) center/contain no-repeat;filter:drop-shadow(0 4px 4px rgba(120,80,70,.3));transition:opacity .4s,scale .6s cubic-bezier(.3,1.5,.5,1),rotate .6s}
.chapter.revised .sticker{opacity:1;scale:1;rotate:14deg}

/* ---------- the close ---------- */
.colophon{position:relative;max-width:34rem;margin:0 auto 1rem;text-align:center;padding:2.2rem 1.4rem 1.4rem;background:var(--paper);border-radius:12px;box-shadow:var(--card-shadow);
  outline:2px dashed var(--stitch);outline-offset:-10px;font-size:1.02rem;color:var(--muted)}
.colophon .garland{display:block;width:min(20rem,86%);margin:0 auto .6rem;height:auto}
.colophon p{margin:.35rem 0}
.colophon .hand{font-family:var(--f-hand);font-size:1.5rem;color:var(--rose);line-height:1.2}

/* ---------- the congratulatory shower ---------- */
.sparkles{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:95;display:none}
.cheer{position:fixed;left:50%;top:5.4rem;z-index:96;max-width:min(30rem,92vw);padding:.7rem 1.4rem .8rem;text-align:center;pointer-events:none;
  font-family:var(--f-hand);font-size:1.55rem;line-height:1.2;color:var(--rose);background:var(--paper);border-radius:999px 999px 999px 999px;
  box-shadow:var(--card-shadow);outline:2px dashed var(--stitch);outline-offset:-6px;opacity:0;translate:-50% -24px;scale:.9;
  transition:opacity .45s ease,translate .6s cubic-bezier(.2,1.4,.4,1),scale .6s cubic-bezier(.2,1.4,.4,1)}
.cheer.show{opacity:1;translate:-50% 0;scale:1}
.cheer b{display:block;font-size:1.9rem;color:var(--sage)}
.cheer i{font-family:var(--f-display);font-style:normal;font-weight:700;font-size:1.4rem}

/* ---------- entrances ---------- */
.js .reveal{opacity:0;transform:translateY(22px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .7s ease var(--d,0ms),transform .8s cubic-bezier(.2,.8,.2,1) var(--d,0ms),rotate .35s,translate .35s}
/* .wow etc. keep their own rotate, so only transform/opacity is animated here */

.menu-btn{display:none}
@media (max-width:62rem){
  .shell{grid-template-columns:minmax(0,1fr);gap:0;padding-top:2.8rem}
  nav.spine{position:fixed;inset:0 auto 0 0;width:min(21rem,88vw);max-height:none;z-index:80;border-radius:0 18px 18px 0;padding:1.4rem 1.2rem 4rem;
    transform:translateX(-104%);transition:transform .3s ease;padding-top:calc(1.4rem + env(safe-area-inset-top,0px))}
  nav.spine.open{transform:none}
  .menu-btn{display:inline-block}
  body{font-size:1.12rem}
  .case dl{grid-template-columns:minmax(0,1fr)}
  .case dt{padding-top:.5rem}
}
@media (max-width:30rem){
  .topbar{padding-inline:12px;gap:.4rem}
  .topbar .mark{font-size:1rem;gap:.3rem}
  .topbar .mark::before{width:1.2rem;height:1.2rem}
  .btns{gap:.3rem}
  .btn,.topbar button{font-size:.98rem!important;padding:.3rem .65rem .35rem!important}
}
@media (max-width:40rem){
  dl.gloss{grid-template-columns:minmax(0,1fr)}dl.gloss dd{margin-bottom:.5rem}
  .chapter{padding-inline:1.15rem;outline-offset:-8px}
  .topbar .mark{font-size:1.05rem;white-space:nowrap}
  .btn,.topbar button,.mark-done{font-size:1.1rem;padding:.35rem .8rem .4rem}
  .lede::first-letter{font-size:4.2rem}
  .epigraph{font-size:1.3rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
  .petal{display:none}
  .sparkles{display:none!important}
}

/* ---------- paper copy: plain, no lace, no petals ---------- */
@media print{
  .sparkles,.cheer{display:none!important}
  body{background:#fff;color:#000;font-size:11.5pt;padding:0;background-image:none}
  .progress,.topbar,nav.spine,.petal,.mark-done,.sticker,.frontis::before,.frontis .corner,.chapter::before,.chapter::after,.colophon .garland{display:none!important}
  .shell{display:block;padding:0;max-width:none}
  .chapter{box-shadow:none;outline:0;border-radius:0;margin:0 0 1.2rem;padding:1rem 0;break-before:page;background:none}
  .wow,.exam,.flag,.mnemonic,.case,.epigraph{box-shadow:none;border:1px solid #999;rotate:0deg;background:none;color:#000;break-inside:avoid;clip-path:none}
  .wow::before,.exam::before,.flag::before,.mnemonic::before,.epigraph::before{display:none}
  .js .reveal{opacity:1!important;transform:none!important}
  a{color:#000}
}

/* ---------- Hindi edition ---------- */
html[lang="hi"] body{line-height:1.95}
html[lang="hi"] h2{font-size:clamp(2rem,4.6vw,3.1rem);line-height:1.25}
html[lang="hi"] h3{font-size:1.75rem;line-height:1.35}
html[lang="hi"] h4{line-height:1.4}
html[lang="hi"] .frontis h1{font-size:clamp(3.2rem,9.5vw,6rem);line-height:1.15}
html[lang="hi"] .lede::first-letter{all:unset}
html[lang="hi"] .case .nm{font-size:1.5rem;line-height:1.4}
html[lang="hi"] th{font-size:1.15rem}
html[lang="hi"] .ch-tag,html[lang="hi"] .wow>.lab,html[lang="hi"] .exam>.lab,html[lang="hi"] .flag>.lab,html[lang="hi"] .mnemonic>.lab{line-height:1.35}
html[lang="hi"] .topbar .mark{font-size:1.45rem}

/* ---------- welcome card: choose a language ---------- */
html:not(.lang-set){overflow:hidden}
.gate{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:20px;overflow:auto;background-color:var(--bg);
  background-image:radial-gradient(var(--bg-dot) 1.4px,transparent 1.6px),repeating-linear-gradient(0deg,var(--bg-check) 0 22px,transparent 22px 44px),repeating-linear-gradient(90deg,var(--bg-check) 0 22px,transparent 22px 44px);
  background-size:38px 38px,auto,auto}
html.lang-set .gate{display:none}
.gate-card{position:relative;isolation:isolate;max-width:34rem;width:100%;text-align:center;padding:2.2rem 1.6rem 1.8rem;margin-block:auto}
.gate-card::before{content:"";position:absolute;z-index:-1;left:50%;top:50%;width:min(44rem,140vw);aspect-ratio:1;translate:-50% -50%;
  background:url(../img/lace-doily.svg) center/contain no-repeat;filter:drop-shadow(0 12px 18px rgba(120,80,70,.28));animation:slow-turn 160s linear infinite}
.gate-art{display:block;width:min(20rem,80%);height:auto;margin:0 auto .4rem}
.gate-title{font-family:var(--f-display);font-weight:700;font-size:clamp(2.6rem,9vw,3.8rem);line-height:1.1;margin:.2rem 0 .6rem;color:var(--rose)}
.gate-title span{display:block;font-family:"Kalam","Caveat",cursive;font-size:.78em;line-height:1.3}
.gate-ask{margin:.2rem auto;max-width:22rem;color:#41322e;font-size:1.05rem;line-height:1.6}
.gate-btns{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin:1.4rem 0 1rem}
.gate-btn{min-width:9.5rem;padding:.55rem 1.6rem .65rem;font-family:var(--f-display);font-weight:700;font-size:2.1rem;line-height:1.3;text-decoration:none;color:#a14a5d;
  background:#f7d9df;border:2px dashed #e5a9b8;border-radius:999px;box-shadow:var(--note-shadow);transition:transform .2s ease,background-color .2s ease}
.gate-btn:hover,.gate-btn:focus-visible{background:#f1c3cf;transform:translateY(-3px) rotate(-1.5deg)}
.gate-btn[lang="hi"]{font-family:"Kalam","Caveat",cursive;font-size:1.8rem}
.gate-note{font-size:.88rem;color:#6f5b55;max-width:24rem;margin:.6rem auto 0;line-height:1.5}
.btn.langswitch{text-decoration:none;display:inline-block}
.btn.langswitch[lang="hi"]{font-family:"Kalam","Caveat",cursive;font-size:1.05rem}
@media print{.gate{display:none!important}}

/* ---------- the storm between the welcome card and the book ---------- */
/* a still, dark room in which photographs fall; serif type, set large and held long */
.storm{position:fixed;inset:0;z-index:300;display:none;overflow:hidden;background:#101216;opacity:1;
  transition:opacity 1.4s ease,background-color 3.4s ease}
html.storm-pending .storm{display:block}
html.storm-on{overflow:hidden}
.storm.resolve{background:#fbf3e6}
.storm-photos{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.storm-ph{position:absolute;box-shadow:0 18px 50px rgba(0,0,0,.7);will-change:transform;background:#222}
.storm-ph img{display:block;width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(.95) brightness(.85);-webkit-user-drag:none}
.storm-word{position:absolute;white-space:nowrap;font-style:italic;font-weight:500;color:#f1ebdf;text-shadow:0 2px 18px rgba(0,0,0,.8);will-change:transform;transform-origin:0 0}
html[lang="hi"] .storm-word{font-style:normal}
.storm-scrim{position:absolute;inset:0;pointer-events:none;z-index:5;background:radial-gradient(ellipse 90% 30% at 50% 50%,rgba(8,9,12,.96),rgba(8,9,12,.9) 55%,rgba(8,9,12,.6) 78%,transparent 100%)}
.storm.resolve .storm-scrim{opacity:0;transition:opacity 1.6s}
.storm-line,.storm-title{position:absolute;left:0;right:0;margin:0;padding:0 clamp(1.2rem,8vw,7rem);text-align:center;pointer-events:none;z-index:6;text-wrap:balance}
.storm-line{top:50%;translate:0 -50%;font-family:"Cormorant Garamond","Noto Serif Devanagari",Georgia,serif;font-style:italic;font-weight:500;
  font-size:clamp(1.9rem,4.4vw,3.4rem);line-height:1.35;letter-spacing:.01em;color:#f6f1e7;opacity:0;text-shadow:0 2px 24px rgba(0,0,0,.9)}
html[lang="hi"] .storm-line{font-style:normal;font-family:"Noto Serif Devanagari","Cormorant Garamond",Georgia,serif;font-weight:500;line-height:1.7;font-size:clamp(1.6rem,3.6vw,2.7rem)}
.storm-title{top:50%;translate:0 -50%;font-family:"Cormorant Garamond","Noto Serif Devanagari",Georgia,serif;font-weight:500;font-size:clamp(3rem,10vw,7.4rem);line-height:1.1;letter-spacing:.01em;color:#4a2f33;opacity:0}
html[lang="hi"] .storm-title{font-family:"Noto Serif Devanagari",Georgia,serif;font-weight:500;line-height:1.35}
.storm-skip{position:absolute;right:clamp(16px,3vw,32px);bottom:clamp(16px,3vw,28px);z-index:7;cursor:pointer;background:none;border:0;padding:.4rem .2rem;
  font-family:"Cormorant Garamond","Noto Serif Devanagari",Georgia,serif;font-style:italic;font-size:1.25rem;letter-spacing:.04em;color:rgba(246,241,231,.78);
  border-bottom:1px solid rgba(246,241,231,.45);transition:color .25s,border-color .25s}
.storm-skip:hover,.storm-skip:focus-visible{color:#fff;border-color:#fff}
html[lang="hi"] .storm-skip{font-style:normal;font-family:"Noto Serif Devanagari",Georgia,serif;font-size:1.05rem}
.storm.resolve .storm-skip{opacity:0;pointer-events:none;transition:opacity .5s}
.photo-credits{margin-top:.8rem;font-size:.9rem;text-align:left}
.photo-credits summary{cursor:pointer;font-family:var(--f-hand);font-size:1.25rem;color:var(--rose)}
.photo-credits ul{margin:.4rem 0 0;padding-left:1.1rem}
.photo-credits li::before{display:none}
@media print{.storm{display:none!important}}