:root{
  --paper:#FBFAF8;
  --plate:#F3F3F1;
  --silver:#E5E7E9;
  --mist:#CBCFD4;
  --rule:#D9DBDE;
  --rule-soft:#E7E8EA;
  --ink:#1D2024;
  --ink-2:#4C525A;
  --ink-3:#7B828B;
  --ember:#9F8248;
  --ember-soft:#D8C89A;
  --glow: rgba(255,247,232,.9);
  --shadow: 0 18px 48px -22px rgba(30,34,40,.42);
  --hero-img:url('assets/hero-nebula.jpg');
  --silver-img:url('assets/hero-silver.jpg');
  --hero-veil: linear-gradient(180deg, rgba(6,8,16,.30) 0%, rgba(6,8,16,.12) 45%, rgba(6,8,16,0) 75%);
  --field-img:url('assets/field-texture.jpg');
  color-scheme: light only;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:"EB Garamond","Iowan Old Style","Palatino Linotype",Georgia,serif;
  font-size:clamp(17px,1.02vw + 14px,20px); line-height:1.62;
  font-variant-numeric:oldstyle-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
::selection{background:rgba(159,130,72,.22)}

/* ---------- layout ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(20px,4vw,56px)}
.measure{max-width:63ch}
.sec{padding:clamp(64px,8vw,124px) 0;position:relative}
.sec + .sec{border-top:0}

.grid{display:grid;grid-template-columns:minmax(0,63ch) minmax(0,20ch);gap:clamp(28px,5vw,72px);align-items:start}
@media (max-width:900px){.grid{grid-template-columns:1fr}}

.rail{
  font-family:"Instrument Sans",system-ui,sans-serif;
  font-size:.72rem;line-height:1.55;color:var(--ink-3);
  border-top:1px solid var(--rule);padding-top:.7em;
}
.rail b{display:block;font-weight:600;color:var(--ink-2);font-size:.76rem;letter-spacing:.01em;margin-bottom:.35em}
.rail + .rail{margin-top:1.6em}

/* ---------- type ---------- */
h1,h2,h3,h4{font-weight:400;margin:0;line-height:1.16;letter-spacing:.005em}
h2{font-size:clamp(1.85rem,3.1vw,2.9rem);margin-bottom:.5em;text-wrap:balance}
h3{font-size:clamp(1.2rem,1.5vw,1.45rem);margin-bottom:.35em}
p{margin:0 0 1.05em}
.lede{font-size:clamp(1.15rem,1.5vw,1.42rem);line-height:1.5;color:var(--ink-2)}
.drop::first-letter{
  float:left;font-size:3.55em;line-height:.82;padding:.06em .1em 0 0;
  font-weight:500;color:var(--ink);
}
em,i{font-style:italic}
.figref{
  font-style:italic;color:var(--ink-3);font-size:.86rem;letter-spacing:.01em;
  margin:0 0 1.1em;
}
.figcap{
  font-family:"Instrument Sans",system-ui,sans-serif;font-size:.74rem;line-height:1.5;
  color:var(--ink-3);max-width:70ch;margin:1.1em 0 0;
}
.figcap i{font-family:"EB Garamond",serif;font-style:italic;font-size:.86rem}
.ui{font-family:"Instrument Sans",system-ui,sans-serif}

blockquote{
  margin:2em 0;padding-left:1.3em;border-left:1px solid var(--mist);
  font-size:1.06em;line-height:1.5;color:var(--ink-2);font-style:italic;
}
blockquote cite{display:block;margin-top:.7em;font-style:normal;font-family:"Instrument Sans",sans-serif;font-size:.74rem;color:var(--ink-3)}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px clamp(16px,4vw,40px);
  background:transparent;
  border-bottom:1px solid transparent;transition:border-color .3s, background .3s, backdrop-filter .3s;
}
.nav::before{content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background:linear-gradient(180deg, rgba(4,6,12,.72) 0%, rgba(4,6,12,.38) 55%, rgba(4,6,12,0) 100%);
  transition:opacity .3s}
.nav > *{position:relative;z-index:1}
.nav.on::before{opacity:0}
.nav.on{
  background:color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter:blur(14px) saturate(1.1);
  border-bottom-color:var(--rule-soft);
}
.nav .mark{
  font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;
  font-family:"Instrument Sans",sans-serif;font-weight:500;color:var(--ink);
  text-decoration:none;white-space:nowrap;
}
.nav .mark span{color:var(--ink-3);font-weight:400}
.nav .mark, .nav .navlinks a{color:rgba(255,255,255,.92)}
.nav .mark span{color:rgba(255,255,255,.58)}
.nav .navlinks .buy{border-color:rgba(255,255,255,.8);color:#fff}
.nav .navlinks .buy:hover{background:#fff;color:#1D2024;border-color:#fff}
.nav.on .mark{color:var(--ink)}
.nav.on .mark span{color:var(--ink-3)}
.nav.on .navlinks a{color:var(--ink-2)}
.nav.on .navlinks a:hover{color:var(--ink)}
.nav.on .navlinks .buy{border-color:var(--ink);color:var(--ink)}
.nav.on .navlinks .buy:hover{background:var(--ink);color:var(--paper)}
.nav .mark{flex:0 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis}
.navlinks{display:flex;gap:clamp(12px,1.8vw,28px);align-items:center;flex:0 0 auto}
.navlinks a{
  font-family:"Instrument Sans",sans-serif;font-size:.92rem;color:var(--ink-2);white-space:nowrap;
  text-decoration:none;padding:4px 2px;transition:color .2s;
}
.nav .navlinks a:hover{color:#fff}
@media (max-width:1100px){.nav .mark span{display:none}}
@media (max-width:900px){.navlinks a:not(.buy){display:none}}

.buy{
  border:1px solid var(--ink);border-radius:999px;padding:8px 18px !important;
  font-weight:500;
}
.buy:hover{background:var(--ink);color:var(--paper)}

/* ---------- hero: the colour nebula, type in light ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  overflow:hidden;isolation:isolate;background:#0B0D14;
}
.hero .neb{
  position:absolute;inset:-8% -4% -4% -4%;z-index:-2;
  background-image:var(--hero-img);background-size:cover;background-position:52% 38%;
  transform:scale(1.06);
  will-change:transform;
}
.hero .scrim{position:absolute;inset:0;z-index:-1;
  background:linear-gradient(102deg, rgba(5,7,14,.62) 0%, rgba(5,7,14,.40) 34%, rgba(5,7,14,.10) 58%, rgba(5,7,14,0) 74%)}
.hero .veil{position:absolute;inset:0;z-index:-1;background:var(--hero-veil)}
.hero .htitle{color:#F6F4F1;text-shadow:0 1px 26px rgba(4,6,12,.45)}
.hero .hsub{color:rgba(246,244,241,.78)}
.hero .hsub b{color:#F6F4F1}
.hero .hdesc{color:rgba(240,238,234,.86);text-shadow:0 1px 18px rgba(4,6,12,.4)}
.hero .hauthor{color:#F6F4F1}
.hero .btn{background:#F6F4F1;color:#15181C;border-color:#F6F4F1}
.hero .btn.ghost{background:rgba(6,8,16,.38);backdrop-filter:blur(8px);color:#F6F4F1;border-color:rgba(246,244,241,.75)}
.hero .btn.ghost:hover{background:rgba(6,8,16,.55);border-color:#F6F4F1}
.hero .scrollcue{color:rgba(246,244,241,.62)}
.hero .scrollcue .bar{background:linear-gradient(rgba(246,244,241,.6),transparent)}
#dust{position:absolute;inset:0;z-index:-1;pointer-events:none}
.heroInner{
  width:100%;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,5vw,64px);
  align-items:center;padding-top:120px;padding-bottom:72px;
}
@media (max-width:880px){.heroInner{grid-template-columns:1fr;padding-top:104px}}

.htitle{
  font-size:clamp(2.1rem,5.4vw,4.1rem);line-height:1.06;letter-spacing:.085em;
  text-transform:uppercase;margin:0 0 .5em;font-weight:400;color:var(--ink);
}
.htitle .ln{display:block;overflow:hidden}
.htitle .ln > span{display:block;transform:translateY(105%);animation:rise .95s cubic-bezier(.2,.7,.2,1) forwards}
.htitle .ln:nth-child(2) > span{animation-delay:.1s}
.htitle .ln:nth-child(3) > span{animation-delay:.2s}
@keyframes rise{to{transform:translateY(0)}}
.hsub{
  font-family:"Instrument Sans",sans-serif;font-size:.8rem;letter-spacing:.26em;
  text-transform:uppercase;color:var(--ink-2);margin:0 0 1.8em;
}
.hsub b{font-weight:500;color:var(--ink)}
.hdesc{max-width:48ch;color:var(--ink-2);font-size:clamp(1.12rem,1.35vw,1.28rem);line-height:1.55}
.hauthor{
  margin-top:2em;font-family:"EB Garamond",Georgia,serif;font-size:1.08rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--ink);
}
.heroText > :not(h1){animation:fadeup .9s cubic-bezier(.2,.7,.2,1) both}
.heroText > :nth-child(2){animation-delay:.2s}
.heroText > :nth-child(3){animation-delay:.28s}
.heroText > :nth-child(4){animation-delay:.36s}
.heroText > :nth-child(5){animation-delay:.44s}
@keyframes fadeup{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.hcta{display:flex;flex-wrap:wrap;gap:14px;margin-top:2.2em}
.btn{
  font-family:"Instrument Sans",sans-serif;font-size:.92rem;letter-spacing:.02em;
  text-decoration:none;padding:14px 28px;border-radius:999px;border:1px solid var(--ink);
  background:var(--ink);color:var(--paper);transition:opacity .2s, transform .2s;
}
.btn:hover{opacity:.86}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--mist)}
.btn.ghost:hover{border-color:var(--ink);opacity:1}

.hcover{justify-self:center;max-width:min(430px,80vw);position:relative;
  animation:lift 1.35s .2s cubic-bezier(.2,.7,.2,1) both;}
.hstats{
  display:flex;flex-wrap:wrap;justify-content:center;gap:.2em 0;margin:24px auto 0;max-width:40ch;
  font-family:"EB Garamond",Georgia,serif;font-size:.98rem;line-height:1.5;
  color:rgba(246,244,241,.9);text-align:center;text-shadow:0 1px 14px rgba(4,6,12,.6);
}
.hstats span+span::before{content:"·";margin:0 .55em;color:rgba(246,244,241,.55)}
.hcover img{
  filter:drop-shadow(0 38px 46px rgba(3,5,12,.55)) drop-shadow(0 10px 16px rgba(3,5,12,.4));
  animation:float 9s 1.6s ease-in-out infinite;
}
@keyframes lift{from{opacity:0;transform:translateY(34px) scale(.97)}to{opacity:1;transform:none}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.scrollcue{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  font-family:"Instrument Sans",sans-serif;font-size:.68rem;letter-spacing:.24em;
  text-transform:uppercase;color:var(--ink-3);display:flex;flex-direction:column;
  align-items:center;gap:8px;
}
.scrollcue .bar{width:1px;height:34px;background:linear-gradient(var(--ink-3),transparent)}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001s !important;animation-delay:0s !important;transition-duration:.001s !important}
}

/* ---------- plate: the interactive figure — one flat panel, no frame-in-frame ---------- */
.plate{
  margin:clamp(30px,4vw,52px) 0 0;
  background:var(--plate);
  border-radius:8px;overflow:hidden;
}
.plate-head{padding:clamp(22px,3vw,34px) clamp(18px,3vw,36px) 0}
.plate-head .t{font-size:clamp(1.2rem,1.8vw,1.5rem);letter-spacing:.005em;line-height:1.2}
.plate-body{padding:clamp(18px,3vw,36px);min-width:0}

/* generic controls */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-family:"Instrument Sans",sans-serif;font-size:.78rem;
  border:1px solid transparent;background:var(--paper);color:var(--ink-2);
  padding:7px 14px;border-radius:999px;cursor:pointer;transition:.18s;
}
.chip:hover{border-color:var(--mist);color:var(--ink)}
.chip[aria-selected="true"], .chip.on{
  border-color:var(--ink);background:var(--ink);color:var(--paper);
}
:focus-visible{outline:2px solid var(--ember);outline-offset:3px;border-radius:2px}

/* ---------- module 1: semantic information ---------- */
.semiWrap{display:grid;grid-template-columns:1fr minmax(0,300px);gap:clamp(20px,3vw,40px);align-items:start}
@media (max-width:820px){.semiWrap{grid-template-columns:1fr}}
.signals{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px;margin-top:18px}
.sig{
  text-align:left;cursor:pointer;background:var(--paper);
  border:1px solid transparent;border-radius:6px;padding:12px 13px;transition:.18s;
  font-family:"Instrument Sans",sans-serif;font-size:.82rem;color:var(--ink-2);line-height:1.4;
  display:flex;gap:10px;align-items:flex-start;
}
.sig:hover{border-color:var(--mist)}
.sig .dot{width:9px;height:9px;border-radius:50%;border:1px solid var(--mist);margin-top:4px;flex:0 0 auto;transition:.18s}
.sig.att{border-color:var(--ink);background:var(--paper);color:var(--ink)}
.sig.att .dot{background:var(--ember);border-color:var(--ember)}
.sig .why{display:block;color:var(--ink-3);font-size:.74rem;margin-top:3px;opacity:0;max-height:0;transition:.25s;overflow:hidden}
.sig.rev .why{opacity:1;max-height:80px}
.gauge{border-radius:6px;padding:18px 18px 20px;background:var(--paper)}
.gauge h4{font-family:"Instrument Sans",sans-serif;font-size:.72rem;letter-spacing:.08em;color:var(--ink-3);font-weight:600;margin:0 0 12px}
.meter{height:6px;background:var(--silver);border-radius:99px;overflow:hidden;margin:6px 0 4px}
.meter i{display:block;height:100%;background:var(--ink);width:50%;transition:width .5s cubic-bezier(.3,.8,.3,1)}
.meter.warm i{background:var(--ember)}
.gnum{font-family:"Instrument Sans",sans-serif;font-size:.72rem;color:var(--ink-3);display:flex;justify-content:space-between}
.verdict{margin-top:16px;font-size:.96rem;line-height:1.45;color:var(--ink-2);min-height:5.4em}
.verdict b{color:var(--ink);font-weight:500}

/* ---------- module 2: IRIS ---------- */
/* The IRIS plate keeps its own printed-paper treatment in both themes. */
.irisWrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,282px);gap:clamp(16px,2.2vw,34px);align-items:center}
@media (max-width:1080px){.irisWrap{grid-template-columns:minmax(0,1fr)}}
.irisScroll{overflow-x:auto;max-width:100%;overflow-y:hidden;background:#FBFAF8;border-radius:6px;padding:10px}
#iris{width:100%;height:auto;max-width:760px;margin:0 auto;display:block;
  --il:#1A1D21; --ihalo:#FBFAF8;
  --i1:#ECEFF1; --i1s:#607D8B;
  --i2:#E6F4EA; --i2s:#2E7D32;
  --i3:#FDE8EF; --i3s:#AD5078;
  --i4s:#1A1D21;}
@media (max-width:720px){ #iris{min-width:680px;max-width:none} }
#iris defs marker path{fill:var(--il)}
#iris .bandfill{stroke-width:1.2;opacity:.95;transition:stroke-width .25s}
#iris .bandfill.sel{stroke-width:3.4}
#iris .bandfill.bphy{fill:var(--i1);stroke:var(--i1s)}
#iris .bandfill.bbio{fill:var(--i2);stroke:var(--i2s)}
#iris .bandfill.bzoo{fill:var(--i3);stroke:var(--i3s)}
#iris .bandfill.bnoo{fill:url(#noosphereGradient);stroke:var(--i4s)}
#iris .iringline{stroke:var(--il);stroke-width:.9;opacity:.26}
#iris .inooline{stroke:rgba(255,255,255,.5);stroke-width:.75}
#iris .iaxis{stroke:var(--il);stroke-width:1.5;fill:none}
#iris .iarrow{stroke:var(--il);stroke-width:1.4;fill:none;marker-end:url(#ahead)}
#iris .itick{stroke:var(--il);stroke-width:1.1;fill:none}
#iris text{font-family:"Instrument Sans",system-ui,sans-serif;paint-order:stroke fill;
  stroke:var(--ihalo);pointer-events:none;fill:var(--il)}
#iris .itxt{font-size:8.5px;font-weight:600;stroke-width:2.5px}
#iris .iaxlbl{font-size:10.5px;font-weight:700;stroke-width:2.5px}
#iris .iring2{font-size:13px;font-weight:700;letter-spacing:.02em;stroke-width:3px;transition:fill .25s}
#iris .iring2.on{fill:#8A6D2F}
#iris .ibox rect{fill:var(--ihalo);stroke:var(--il);stroke-width:1}
#iris .ibox text{font-size:13px;font-weight:700;letter-spacing:.02em;stroke-width:0}
#iris .icore{fill:#14171B;transition:fill .3s}
#iris .icore.sel{stroke:#8A6D2F;stroke-width:3}
#iris .icoredot{fill:var(--ihalo)}
#iris .iomega{font-family:"EB Garamond",Georgia,serif;font-size:15px;font-weight:600;stroke-width:0}
#iris .ihit{cursor:pointer}
.irisPanel{padding-left:6px;min-height:270px}
@media (max-width:1080px){.irisPanel{padding:16px 0 0;margin-top:10px}}
.irisPanel .k{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.7rem;letter-spacing:.1em;color:var(--ink-3);margin:13px 0 2px}
.irisPanel .v{font-size:.96rem;line-height:1.45;color:var(--ink)}
.irisPanel h3{font-size:1.45rem;margin-bottom:.15em}
.irisPanel .sup{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.74rem;color:var(--ember);letter-spacing:.06em;margin-bottom:1em}

/* ---------- module 5: meaning systems ---------- */
.msNav{display:flex;gap:2px;border-bottom:1px solid var(--rule);overflow-x:auto;scrollbar-width:none}
.msNav::-webkit-scrollbar{display:none}
.msBtn{
  background:transparent;border:0;border-bottom:2px solid transparent;cursor:pointer;
  padding:10px 14px 12px;white-space:nowrap;color:var(--ink-3);
  font-family:"Instrument Sans",sans-serif;font-size:.8rem;transition:.2s;
}
.msBtn .num{font-size:.68rem;color:var(--ink-3);margin-right:7px}
.msBtn:hover{color:var(--ink-2)}
.msBtn.on{color:var(--ink);border-bottom-color:var(--ember)}
.msBtn.on .num{color:var(--ember)}
.msBody{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(20px,3.5vw,48px);padding-top:26px}
@media (max-width:820px){.msBody{grid-template-columns:1fr}}
.msBody h3{font-size:clamp(1.5rem,2.6vw,2.1rem);letter-spacing:.02em}
.msEra{font-family:"Instrument Sans",sans-serif;font-size:.76rem;color:var(--ember);letter-spacing:.06em;margin-bottom:1em}
.msBody p{color:var(--ink-2)}
.facts{display:grid;gap:0}
.fact{display:grid;grid-template-columns:minmax(88px,.42fr) 1fr;gap:14px;padding:11px 0;border-top:1px solid var(--rule-soft)}
.fact:first-child{border-top:0}
.fact dt{font-family:"Instrument Sans",sans-serif;font-size:.72rem;color:var(--ink-3);letter-spacing:.03em}
.fact dd{margin:0;font-size:.95rem;line-height:1.45;color:var(--ink)}
.texts{font-style:italic;color:var(--ink-2);font-size:.95rem}

/* ---------- module 6: the data ---------- */
.dataHead{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;margin-bottom:18px}
#chart{width:100%;height:auto;display:block;overflow:visible}
#chart .ax{stroke:var(--rule);stroke-width:1}
#chart .gl{stroke:var(--rule-soft);stroke-width:1}
#chart text{font-family:"Instrument Sans",sans-serif;fill:var(--ink-3);font-size:10.5px}
#chart text.name{fill:var(--ink-2);font-size:11.5px}
#chart .band{fill:var(--mist);opacity:.34;transition:.3s}
#chart .band.hot{fill:var(--ember);opacity:.42}
#chart .mean{stroke:var(--ink);stroke-width:2}
#chart .whisk{stroke:var(--ink-3);stroke-width:1}
#chart .pt{fill:var(--ink);opacity:.55}
#chart .lnkmean{fill:none;stroke:var(--ember);stroke-width:1.6;stroke-dasharray:2 4;stroke-linecap:round}
#chart .meanpt{fill:var(--ember)}
#chart .lnk2{fill:none;stroke:var(--ink);stroke-width:1.4;stroke-dasharray:4 3}
.readout{
  margin-top:18px;padding:14px 16px;background:var(--paper);border-radius:6px;
  font-family:"Instrument Sans",sans-serif;font-size:.82rem;color:var(--ink-2);line-height:1.55;min-height:3.4em;
}
.readout b{color:var(--ink);font-weight:600}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px;margin-top:26px}
.stat{border-top:1px solid var(--rule);padding-top:12px}
.stat .n{font-size:2rem;line-height:1;letter-spacing:.01em}
.stat .l{font-family:"Instrument Sans",sans-serif;font-size:.74rem;color:var(--ink-3);margin-top:.5em;line-height:1.45}

/* ---------- module 8: god / depth ---------- */
.godRail{position:relative;margin:8px 0 26px}
.godTrack{height:1px;background:var(--rule);position:absolute;left:0;right:0;top:14px}
.godBtns{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;position:relative}
.godBtn{
  background:transparent;border:0;cursor:pointer;padding:0 0 6px;text-align:center;
  font-family:"EB Garamond",serif;font-size:1.15rem;color:var(--ink-3);transition:.2s;
}
.godBtn .node{
  display:block;width:9px;height:9px;border-radius:50%;border:1px solid var(--mist);
  margin:10px auto 8px;background:var(--paper);transition:.2s;
}
.godBtn.on{color:var(--ink)}
.godBtn.on .node{background:var(--ember);border-color:var(--ember);transform:scale(1.3)}
.godBtn:hover .node{border-color:var(--ink-3)}
.godBody{min-height:6em;font-size:1.06rem;line-height:1.5;color:var(--ink-2);max-width:60ch}
.godBody b{color:var(--ink);font-weight:500}
.depth{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:2px;margin-top:34px;border-top:1px solid var(--rule)}
.dItem{border-bottom:1px solid var(--rule-soft);padding:16px 0}
.dItem .ltr{font-size:2.4rem;line-height:1;color:var(--ember);letter-spacing:.02em}
.dItem .w{font-size:1.06rem;margin:.25em 0 .3em}
.dItem .x{font-family:"Instrument Sans",sans-serif;font-size:.79rem;color:var(--ink-2);line-height:1.5;padding-right:14px}

/* ---------- volumes ---------- */
.vols{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,3vw,40px);margin-top:34px}
@media (max-width:760px){.vols{grid-template-columns:1fr}}
.vol{border-top:1px solid var(--rule);padding-top:16px}
.vol.now{border-top-color:var(--ember);border-top-width:2px;padding-top:15px}
.vol .rn{font-family:"Instrument Sans",sans-serif;font-size:.72rem;letter-spacing:.14em;color:var(--ink-3)}
.vol.now .rn{color:var(--ember)}
.vol h3{margin:.45em 0 .3em;font-size:1.3rem}
.vol p{font-size:.94rem;color:var(--ink-2);margin:0}
.vol .status{font-family:"Instrument Sans",sans-serif;font-size:.72rem;color:var(--ink-3);margin-top:.9em}

/* ---------- excerpt ---------- */
.excerpt{
  background:
    linear-gradient(color-mix(in srgb,var(--plate) 78%, transparent),color-mix(in srgb,var(--plate) 78%, transparent)),
    var(--field-img);
  background-size:cover;background-position:center;
  border:1px solid var(--rule);border-radius:3px;padding:clamp(26px,4vw,54px);
}
.excerpt .measure{margin:0 auto}
.excerpt p{font-size:1.05rem}

/* ---------- author / buy ---------- */
.author{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:start}
@media (max-width:760px){.author{grid-template-columns:1fr}}
.buyBox{
  display:grid;grid-template-columns:minmax(0,280px) minmax(0,1fr);gap:clamp(24px,4vw,56px);
  align-items:start;
}
@media (max-width:760px){.buyBox{grid-template-columns:1fr}}
.spec{display:grid;gap:0;margin:20px 0 26px;max-width:46ch}
.spec div{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-top:1px solid var(--rule-soft);font-family:"Instrument Sans",sans-serif;font-size:.79rem}
.spec div:first-child{border-top:0}
.spec dt{color:var(--ink-3)}
.spec dd{margin:0;color:var(--ink);text-align:right}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--rule);padding:48px 0 60px;color:var(--ink-3)}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;align-items:start}
@media (max-width:700px){.fgrid{grid-template-columns:1fr;gap:24px}}
footer .fh{font-family:"Instrument Sans",sans-serif;font-size:.72rem;letter-spacing:.1em;color:var(--ink-2);margin-bottom:.8em}
footer a{font-family:"Instrument Sans",sans-serif;font-size:.82rem;display:block;color:var(--ink-2);text-decoration:none;padding:3px 0}
footer a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
footer .fine{font-family:"Instrument Sans",sans-serif;font-size:.72rem;line-height:1.6;max-width:40ch}

.iam{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.iam svg{width:34px;height:34px;flex:0 0 auto}
.iam .nm{font-family:"Instrument Sans",sans-serif;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);line-height:1.35}

/* corpus colour keying + points */
#chart .pt{transition:.15s}
#chart .pt.hot{fill:var(--ember);r:5}
#chart .pt.c0{opacity:.42}#chart .pt.c1{opacity:.5}#chart .pt.c2{opacity:.58}
#chart .pt.c3{opacity:.66}#chart .pt.c4{opacity:.74}#chart .pt.c5{opacity:.82}
#chart .hitp{cursor:pointer}

/* the full table of texts */
.tbl{max-height:440px;overflow-y:auto;border-top:1px solid var(--rule);padding-right:6px}
.tr{
  display:grid;grid-template-columns:62px minmax(0,1fr) 118px 104px;gap:14px;align-items:baseline;
  padding:9px 2px;border-bottom:1px solid var(--rule-soft);
}
.tr:hover{background:color-mix(in srgb,var(--paper) 60%,transparent)}
.ts{font-family:"EB Garamond",serif;font-size:1.08rem;color:var(--ink);font-variant-numeric:lining-nums;text-align:right}
.tt{font-size:.95rem;line-height:1.3;color:var(--ink)}
.ta{display:block;font-family:"Instrument Sans",sans-serif;font-size:.73rem;color:var(--ink-3);margin-top:2px}
.td,.tc{font-family:"Instrument Sans",sans-serif;font-size:.73rem;color:var(--ink-3)}
.tc{color:var(--ink-2)}
@media (max-width:700px){
  .tr{grid-template-columns:52px minmax(0,1fr);row-gap:2px}
  .td{grid-column:2}.tc{grid-column:2}
}

@media (max-width:640px){ .nav .mark span{display:none} .nav .mark{font-size:.62rem;letter-spacing:.12em} .nav{padding:10px 16px} }

/* ---------- click-to-unfold module ---------- */
.unfold{
  display:flex;align-items:center;gap:16px;width:100%;
  margin-top:clamp(28px,4vw,46px);
  background:transparent;border:0;cursor:pointer;text-align:left;
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
  padding:20px 4px;color:var(--ink);transition:background .25s, padding-left .25s;
}
.unfold:hover{background:color-mix(in srgb,var(--plate) 70%,transparent);padding-left:12px}
.unfold .ut{
  font-family:"EB Garamond",Georgia,serif;font-size:clamp(1.15rem,2vw,1.6rem);
  line-height:1.2;flex:1 1 auto;
}
.unfold .uh{
  font-family:"Instrument Sans",system-ui,sans-serif;font-size:.74rem;color:var(--ink-3);
  white-space:nowrap;transition:color .25s;
}
.unfold:hover .uh{color:var(--ember)}
.unfold .ux{
  position:relative;width:16px;height:16px;flex:0 0 auto;
}
.unfold .ux::before,.unfold .ux::after{
  content:"";position:absolute;left:0;top:7.5px;width:16px;height:1.5px;background:var(--ink);
  transition:transform .35s cubic-bezier(.3,.8,.3,1);
}
.unfold .ux::after{transform:rotate(90deg)}
.unfold[aria-expanded="true"] .ux::after{transform:rotate(0deg)}
.unfold[aria-expanded="true"]{border-bottom-color:transparent}
.unfoldBody{max-height:0;overflow:hidden;transition:max-height .55s cubic-bezier(.3,.8,.3,1)}
.unfoldBody .unfoldInner{padding-top:clamp(20px,3vw,34px);opacity:0;transform:translateY(10px);
  transition:opacity .45s .1s, transform .45s .1s}
.unfoldBody.open .unfoldInner{opacity:1;transform:none}
.unfoldBody .plate{margin-top:clamp(22px,3vw,38px)}
@media (max-width:640px){ .unfold .uh{display:none} }

/* ---------- module: altitude map + lines ---------- */
.altScroll{overflow-x:auto;overflow-y:hidden;max-width:100%;
  background:#FBFAF8;border-radius:6px;padding:12px}
#altChart{width:100%;height:auto;max-width:1060px;margin:0 auto;display:block;--al:#1A1D21;--ahalo:#FBFAF8}
@media (max-width:900px){ #altChart{min-width:900px;max-width:none} }
#altChart text{font-family:"Instrument Sans",system-ui,sans-serif;fill:var(--al);pointer-events:none}
#altChart .aband{font-size:10px;font-weight:700;letter-spacing:.1em;text-anchor:end}
#altChart .ascore{font-size:10.5px;font-weight:600}
#altChart .ahead{font-size:11.5px;font-weight:700}
#altChart .asub{font-size:9.5px;fill:#6B727A}
#altChart .aitem{font-size:10.4px}
#altChart .aitem.dim{fill:#A8AEB5}
#altChart .aitem.soft{fill:#8A9199}
#altChart .aaxis{stroke:var(--al);stroke-width:1;fill:none}
#altChart .arule{stroke:#C9CDD2;stroke-width:.8}
#altChart .atick{stroke:var(--al);stroke-width:1}
#altChart .acol{cursor:pointer;transition:opacity .25s}
#altChart .acol.dim{opacity:.46}
#altChart .ahit{fill:transparent}
#altChart marker path{fill:var(--al)}
#altChart .altwash{opacity:0;transition:opacity .4s ease;pointer-events:none}
#altChart:hover .altwash{opacity:.17}
@media (hover:none){ #altChart .altwash{opacity:.13} }

#lineNav{margin-top:clamp(26px,3.5vw,44px)}
.lineBody{padding-top:26px}
.lineTop{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(20px,3.5vw,48px)}
@media (max-width:860px){.lineTop{grid-template-columns:1fr}}
.lineBody h3{font-size:clamp(1.4rem,2.4vw,1.95rem);letter-spacing:.02em}
.lineBody .who{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.76rem;color:var(--ember);letter-spacing:.06em;margin-bottom:1em}
.lineBody .lineQ{font-style:italic;color:var(--ink-3);margin-bottom:.8em}
.lineBody p{color:var(--ink-2)}
.lineBody .lineConcl{color:var(--ink);border-left:1px solid var(--mist);padding-left:1.1em;margin-top:1.2em}
.lineStat{display:grid;grid-template-columns:repeat(auto-fit,minmax(112px,1fr));gap:16px;margin:0 0 22px}
.lineStat div{border-top:1px solid var(--rule);padding-top:10px}
.lineStat .n{font-size:1.65rem;line-height:1}
.lineStat .l{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.71rem;color:var(--ink-3);margin-top:.45em;line-height:1.4}
.lineFigs{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2.4vw,30px);margin-top:clamp(24px,3.5vw,40px)}
.lineFigs.one{grid-template-columns:1fr;max-width:860px;margin-left:auto;margin-right:auto}
@media (max-width:820px){.lineFigs{grid-template-columns:1fr}}
.lineFig{margin:0;background:#FBFAF8;border-radius:6px;padding:12px}
.lineFig img{width:100%;height:auto;display:block;border-radius:2px}
.lineFig figcaption{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.72rem;line-height:1.5;
  color:var(--ink-3);padding:9px 4px 2px}
.lineNote{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.78rem;line-height:1.55;
  color:var(--ink-3);margin-top:18px}

/* the corpus chart sits flush beneath the meaning-systems plate */
#data .plate{margin-top:14px}

/* ---------- module: four kinds of learning ---------- */
.ltNav{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;border-bottom:1px solid var(--rule);margin-bottom:0}
@media (max-width:700px){.ltNav{grid-template-columns:repeat(2,1fr)}}
.ltBtn{
  display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;
  background:transparent;border:0;border-top:1px solid var(--rule);cursor:pointer;
  padding:18px 8px 16px;font-family:"Instrument Sans",system-ui,sans-serif;color:var(--ink-3);
  transition:.22s;
}
.ltBtn .ic{width:30px;height:30px;stroke:var(--ink-3);fill:none;stroke-width:1.3;transition:.22s}
.ltBtn .ic circle.fl, .ltBtn .ic path.fl{fill:var(--ink-3);stroke:none;transition:.22s}
.ltBtn .lbl{font-size:.82rem;letter-spacing:.01em;color:var(--ink-2);transition:.22s}
.ltBtn .sub{font-size:.68rem;color:var(--ink-3);letter-spacing:.06em;text-transform:uppercase}
.ltBtn:hover{background:color-mix(in srgb,var(--plate) 65%,transparent)}
.ltBtn:hover .ic{stroke:var(--ink)}
.ltBtn:hover .lbl{color:var(--ink)}
.ltBtn.on{border-top-color:var(--ember);border-top-width:2px;padding-top:17px}
.ltBtn.on .ic{stroke:var(--ember)}
.ltBtn.on .ic circle.fl, .ltBtn.on .ic path.fl{fill:var(--ember)}
.ltBtn.on .lbl{color:var(--ink);font-weight:600}

.ltBody{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(24px,4vw,54px);padding-top:clamp(26px,3.5vw,42px);align-items:start}
@media (max-width:900px){.ltBody{grid-template-columns:1fr}}
.ltHead{display:flex;align-items:center;gap:16px;margin-bottom:.2em}
.ltHead .ic{width:38px;height:38px;flex:0 0 auto;stroke:var(--ember);fill:none;stroke-width:1.2}
.ltHead .ic circle.fl, .ltHead .ic path.fl{fill:var(--ember);stroke:none}
.ltBody h3{font-size:clamp(1.4rem,2.3vw,1.9rem);letter-spacing:.02em;line-height:1.15}
.ltBody .plane{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.76rem;color:var(--ember);
  letter-spacing:.08em;text-transform:uppercase;margin-bottom:1.1em}
.ltBody p{color:var(--ink-2)}
.ltFacts{display:grid;gap:0;margin-top:1.3em;border-top:1px solid var(--rule)}
.ltFacts .f{display:grid;grid-template-columns:minmax(84px,.4fr) 1fr;gap:14px;padding:10px 0;border-bottom:1px solid var(--rule-soft)}
.ltFacts dt{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.71rem;color:var(--ink-3);letter-spacing:.03em}
.ltFacts dd{margin:0;font-size:.92rem;line-height:1.4;color:var(--ink)}
.ltFig{margin:0;background:#FBFAF8;border-radius:6px;padding:14px}
.ltFig img{width:100%;height:auto;display:block;border-radius:2px}
.ltFig figcaption{font-family:"Instrument Sans",system-ui,sans-serif;font-size:.74rem;line-height:1.5;color:var(--ink-3);padding:10px 4px 2px}
/* =====================================================================
   BRAND LAYER — silver light + the ascent
   ===================================================================== */

/* ---------- launch band: the one big moment ---------- */
.launch{position:relative;isolation:isolate;overflow:hidden;text-align:center;
  padding:clamp(72px,9vw,132px) 0;background:var(--paper)}
.launchBg{position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(ellipse 60% 55% at 50% 50%, rgba(255,253,247,.92), rgba(251,250,248,.35) 55%, rgba(251,250,248,0) 80%),
    linear-gradient(180deg, var(--paper) 0%, rgba(251,250,248,0) 18%, rgba(251,250,248,0) 82%, var(--paper) 100%),
    var(--silver-img);
  background-size:auto,auto,cover;background-position:center,center,50% 60%;
  filter:contrast(1.06);
}
.launchInner{display:flex;flex-direction:column;align-items:center;gap:0}
.lk{font-family:"Instrument Sans",sans-serif;font-size:.74rem;letter-spacing:.24em;text-transform:uppercase;color:var(--ember);
  display:flex;align-items:center;gap:10px;margin-bottom:2.2em;font-weight:500}
.lk .live{width:8px;height:8px;border-radius:50%;background:var(--ember);animation:pulse 2.2s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--ember) 45%,transparent)}100%{box-shadow:0 0 0 14px transparent}}
.launch.now .lk .live{background:#C0392B;animation-duration:1.1s}
.launch.now .lk{color:#C0392B}
.lt{margin:0 0 .6em;line-height:1;letter-spacing:.1em;text-transform:uppercase;color:var(--ink)}
.lt .ln{display:block;font-size:clamp(.95rem,1.4vw,1.15rem);letter-spacing:.32em;color:var(--ink-2);margin-bottom:.9em}
.lt .ld8{display:block;font-size:clamp(2.2rem,6.2vw,5rem);letter-spacing:.08em;text-wrap:balance}
.lwhen{font-family:"Instrument Sans",sans-serif;font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);margin:0 0 3em}
.countdown{display:flex;gap:clamp(18px,4vw,56px);font-variant-numeric:tabular-nums lining-nums;margin-bottom:3em}
.countdown .cd{text-align:center;min-width:3.4ch}
.countdown b{display:block;font-weight:400;font-size:clamp(2.6rem,7vw,5.6rem);line-height:.95;letter-spacing:.02em;color:var(--ink)}
.countdown span{display:block;font-family:"Instrument Sans",sans-serif;font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-top:.9em}
.launch.over .countdown{display:none}
.ld{color:var(--ink-2);margin:0 auto 2em;max-width:52ch;font-size:1.06rem;line-height:1.55;text-wrap:balance}
.lCta{display:flex;flex-direction:column;align-items:center;gap:12px}
.btn.big{font-size:1rem;padding:17px 36px;letter-spacing:.04em}
.lnote{font-family:"Instrument Sans",sans-serif;font-size:.74rem;color:var(--ink-3)}
.btn.soon{background:transparent;color:var(--ink-2);border-color:var(--mist);cursor:default;pointer-events:none}

/* ---------- praise ---------- */
.blurbs{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:clamp(18px,2.6vw,34px);margin-top:clamp(28px,4vw,46px)}
.blurb{border-top:1px solid var(--rule);padding-top:22px;position:relative}
.blurb.feat{grid-column:1/-1;border-top-color:var(--ember);border-top-width:2px;padding-top:24px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,22ch);gap:clamp(20px,4vw,60px);align-items:end}
@media (max-width:700px){.blurb.feat{grid-template-columns:1fr}}
.blurb q{quotes:"\201C" "\201D";display:block;font-size:1.06rem;line-height:1.5;color:var(--ink);margin:0 0 1em}
.blurb q::before{content:open-quote;color:var(--ember);font-size:1.6em;line-height:0;vertical-align:-.28em;margin-right:.08em}
.blurb q::after{content:close-quote}
.blurb.feat q{font-size:clamp(1.25rem,2vw,1.7rem);line-height:1.35;text-wrap:balance;margin:0}
.blurb .who{font-family:"Instrument Sans",sans-serif;font-size:.78rem;color:var(--ink);font-weight:600}
.blurb .role{font-family:"Instrument Sans",sans-serif;font-size:.72rem;color:var(--ink-3);line-height:1.45;margin-top:2px}
.blurb.pending{opacity:.55}
.blurb.pending q{font-style:italic}
.blurb.pending .who::after{content:" · placeholder";color:var(--ember);font-weight:400}

/* ---------- repeated CTA at the foot of each plate ---------- */
.plateCta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:28px}
.plateCta .pill{
  font-family:"Instrument Sans",sans-serif;font-size:.76rem;letter-spacing:.02em;text-decoration:none;
  border:1px solid var(--ink);color:var(--ink);border-radius:999px;padding:7px 14px;transition:.18s;
}
.plateCta .pill:hover{background:var(--ink);color:var(--paper)}
.plateCta .more{font-family:"Instrument Sans",sans-serif;font-size:.74rem;color:var(--ink-3)}
.plateCta .more a{color:var(--ink-2)}

/* ---------- buy box additions ---------- */
.buyNote{font-size:.76rem;color:var(--ink-3);margin-top:1.1em}
/* ---------- the Omega section: the silver light returns ---------- */
.omega{overflow:hidden}
.omegaGlow{position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 60% at 50% 45%, rgba(255,252,244,.95), rgba(251,250,248,0) 70%),
    var(--silver-img);
  background-size:cover;background-position:50% 30%;opacity:.55}
.omega .plate{background:color-mix(in srgb,var(--plate) 82%,transparent);backdrop-filter:blur(3px)}
.sec.omega{position:relative;isolation:isolate}

/* ---------- small screens ---------- */
@media (max-width:640px){
  .countdown b{font-size:1.7rem}
  .blurb.feat q{font-size:1.2rem}
}

/* ---------- the argument: a dark, cosmic continuation of the hero ---------- */
.cosmic{
  --paper:#0F1216; --plate:#181C22; --silver:#242930; --mist:#3B424A; --rule:#2A2F36; --rule-soft:#22272D;
  --ink:#ECEAE5; --ink-2:#B5BAC1; --ink-3:#848B94; --ember:#D2B36A;
  background:var(--paper);color:var(--ink);position:relative;isolation:isolate;overflow:hidden;
  padding-top:clamp(84px,10vw,150px);
}
.cosmicBg{position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    linear-gradient(180deg, #0F1216 0%, rgba(15,18,22,.45) 30%, rgba(15,18,22,.55) 70%, #0F1216 100%),
    var(--hero-img);
  background-size:auto,cover;background-position:center,50% 72%;
  opacity:.5;filter:saturate(.85);
}
.cosmicH{
  font-size:clamp(2.1rem,4.2vw,3.7rem);line-height:1.1;max-width:22ch;text-wrap:balance;
  margin:0 0 clamp(36px,4vw,60px);letter-spacing:.005em;
}
.cosmic .lede{color:var(--ink)}
.cosmic .drop::first-letter{color:var(--ember)}
.cosmic ::selection{background:rgba(210,179,106,.28)}

/* ---------- author photo ---------- */
.authorPic{width:132px;height:132px;border-radius:50%;object-fit:cover;margin-bottom:20px;border:1px solid var(--rule)}

/* ---------- launch CTA inside the buy box ---------- */
.bookLaunch{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:clamp(20px,3vw,40px);align-items:center;
  margin-top:2.4em;padding:clamp(22px,2.6vw,32px) clamp(22px,2.8vw,36px);
  background:var(--plate);border-radius:8px;
}
@media (max-width:640px){.bookLaunch{grid-template-columns:1fr}}
.blK{font-family:"Instrument Sans",sans-serif;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ember);
  display:flex;align-items:center;gap:9px;margin-bottom:.9em;font-weight:500}
.blK .live{width:7px;height:7px;border-radius:50%;background:var(--ember);animation:pulse 2.2s ease-out infinite}
.blH{font-size:clamp(1.25rem,1.8vw,1.55rem);margin:0 0 .4em;line-height:1.2}
.blText p{margin:0;font-family:"Instrument Sans",sans-serif;font-size:.86rem;line-height:1.55;color:var(--ink-2);max-width:44ch}
.bookLaunch .btn{flex:0 0 auto;white-space:nowrap}