@font-face{font-family:"Fraunces";font-style:normal;font-weight:300 900;font-display:swap;src:url(fonts/Fraunces-display.woff2?v=1) format("woff2")}
@font-face{font-family:"Atkinson Next";font-style:normal;font-weight:200 800;font-display:swap;src:url(fonts/AtkinsonHyperlegibleNext.woff2?v=1) format("woff2")}
:root{
  color-scheme:light;
  --paper:#f5efe3; --paper-deep:#ece3d2; --surface:#fcf8f0;
  --ink:#1a1712; --ink-soft:#3b352c; --ink-muted:#57503f;
  --rule:#d9cdb6; --rule-strong:#b6a88c;
  --accent:#7a2e12; --accent-text:#6d2810; --on-accent:#fdf8ee;
  --bone:#a8854f; --neand:#7a2e12; --modern:#1c4a7e;
  --shadow:0 1px 2px #1c181414,0 8px 24px #1c181412;
  --display:"Fraunces","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:"Atkinson Next",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --gutter:clamp(1rem,4vw,2.5rem); --bar:2.75rem;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark;
  --paper:#14120d; --paper-deep:#1c1913; --surface:#1f1b14;
  --ink:#f0ebde; --ink-soft:#dcd5c6; --ink-muted:#c9c1ae;
  --rule:#3a352a; --rule-strong:#5a5344;
  --accent:#e2aa5c; --accent-text:#f0bd75; --on-accent:#15130d;
  --bone:#c8a468; --neand:#e2aa5c; --modern:#7fb3d5;
  --shadow:0 1px 2px #0006,0 8px 24px #0005;
}}
:root[data-theme="dark"]{
  color-scheme:dark;
  --paper:#14120d; --paper-deep:#1c1913; --surface:#1f1b14;
  --ink:#f0ebde; --ink-soft:#dcd5c6; --ink-muted:#c9c1ae;
  --rule:#3a352a; --rule-strong:#5a5344;
  --accent:#e2aa5c; --accent-text:#f0bd75; --on-accent:#15130d;
  --bone:#c8a468; --neand:#e2aa5c; --modern:#7fb3d5;
  --shadow:0 1px 2px #0006,0 8px 24px #0005;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:1.125rem;line-height:1.62;overflow-x:clip}
h1,h2,h3{font-family:var(--display);line-height:1.06;letter-spacing:-.015em;margin:0;text-wrap:balance}
h2{font-size:clamp(1.7rem,4.5vw,2.6rem);margin:0 0 1rem}
h3{font-size:1.25rem;margin:2rem 0 .5rem}
p{margin:0 0 1rem}
a{color:var(--accent-text);text-underline-offset:.15em}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:1rem;top:-4rem;z-index:60;background:var(--ink);color:var(--paper);padding:.6rem 1rem;border-radius:.5rem;transition:top .15s}
.skip:focus{top:.6rem}
.wrap{max-width:44rem;margin:0 auto;padding:0 var(--gutter)}
section{scroll-margin-top:calc(var(--bar) + 1rem)}
.section-intro{font-size:1.2rem;color:var(--ink-soft)}
.fine{font-size:.95rem;color:var(--ink-muted)}
/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:.9rem;height:var(--bar);padding:0 var(--gutter);background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule);font-size:.95rem;white-space:nowrap}
.topbar .home{font-weight:700;color:var(--ink);text-decoration:none}
.topnav{display:flex;gap:1rem;overflow-x:auto;scrollbar-width:none}
.topnav::-webkit-scrollbar{display:none}
.topnav a{color:var(--ink-soft);text-decoration:none}
.topnav a[aria-current]{color:var(--accent-text);font-weight:700}
.spacer{flex:1}
.chip{border:1px solid var(--rule-strong);border-radius:999px;padding:.15rem .8rem;color:var(--ink);text-decoration:none;font-size:.85rem}
.icon-btn{display:grid;place-items:center;width:2rem;height:2rem;border:1px solid var(--rule-strong);border-radius:50%;background:none;color:var(--ink);cursor:pointer}
.icon-btn svg{display:block}
.icon-btn [hidden]{display:none}
/* ---------- rail ---------- */
.rail{position:fixed;right:.7rem;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:.55rem}
.rail-dot{position:relative;display:flex;align-items:center;justify-content:flex-end;min-width:1.4rem;min-height:1.4rem;text-decoration:none}
.rail-dot .dot{width:.6rem;height:.6rem;border-radius:50%;border:2px solid var(--rule-strong);background:transparent;flex:none}
.rail-dot.active .dot,.rail-dot[aria-current] .dot{background:var(--accent);border-color:var(--accent)}
.rail-label{position:absolute;right:1.1rem;font-size:.75rem;color:var(--ink-muted);opacity:0;transition:opacity .15s;pointer-events:none;white-space:nowrap}
.rail-dot:hover .rail-label,.rail-dot:focus-visible .rail-label{opacity:1}
@media (max-width:63.99rem){.rail{display:none}}
/* ---------- hero: the cave at torchlight ---------- */
.hero{position:relative;overflow:clip;color:#f5efe3;background:
  radial-gradient(54rem 26rem at 88% -4rem,#59331a 0%,#59331a00 62%),
  radial-gradient(46rem 24rem at 6% 108%,#431f0c 0%,#431f0c00 58%),
  linear-gradient(180deg,#0a0705 0%,#18100a 46%,#0e0a06 100%)}
.hero::after{content:"";position:absolute;inset:auto 0 0 0;height:.35rem;background:linear-gradient(90deg,#e2a45c,#7a2e12 55%,#e2a45c);opacity:.7}
.cave-sky{position:absolute;inset:0 0 auto 0;width:100%;height:10rem;display:block}
.cave-sky path{fill:#040302}
.hero-inner{position:relative;max-width:70rem;margin:0 auto;padding:8rem var(--gutter) 2.75rem;display:grid;gap:1.75rem}
.kicker{font-weight:700;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-text);margin:0 0 .9rem}
.hero .kicker{color:#f0bd75}
.hero h1{font-size:clamp(2.35rem,5.6vw,4.3rem);font-weight:850;max-width:22ch;color:#fdf8ee}
.deck{font-size:clamp(1.1rem,2.4vw,1.35rem);color:var(--ink-soft);max-width:56ch;margin-top:1rem}
.hero .deck{color:#e9e1d1;max-width:52ch}
.byline{color:var(--ink-muted);font-size:.95rem}
.hero .byline{color:#c9c1ae}
.hero :focus-visible{outline-color:#f0bd75}
.share-line{margin:.4rem 0 0}
.share-btn{background:none;border:1px solid var(--rule-strong);border-radius:999px;color:var(--ink);font:inherit;font-size:.9rem;padding:.5rem 1.1rem;cursor:pointer;min-height:2.75rem}
.hero .share-btn{border-color:#8a7a5c;color:#f5efe3}
.hero .share-btn:hover{background:#f0bd75;border-color:#f0bd75;color:#1a120a}
.share-note{margin-left:.7rem;color:var(--ink-muted);font-size:.9rem}
.hero .share-note{color:#c9c1ae}
.hero-cta{margin:1.3rem 0 0}
.cta{display:inline-flex;align-items:center;gap:.5rem;min-height:2.75rem;background:#e2a45c;color:#1a120a;font-weight:800;font-size:1.02rem;text-decoration:none;border-radius:999px;padding:.65rem 1.5rem;box-shadow:0 0 2.2rem #e2a45c44}
.cta:hover{background:#f0bd75}
.hero-visual{position:relative;margin:0;min-width:0}
.hero-num{margin:0 0 .6rem .1rem;font-family:var(--display);font-weight:900;font-size:clamp(3.2rem,9vw,6.2rem);line-height:1;color:#e2a45c;position:relative;z-index:2}
@supports ((-webkit-text-stroke:1px #000)){.hero-num span:first-child{color:#e2a45c26;-webkit-text-stroke:2px #e2a45c}}
.hero-num-unit{display:block;font-family:var(--sans);font-size:.8rem;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:#c9c1ae;margin-top:.45rem}
.hero-frame{display:block;border-radius:1.1rem;padding:.45rem;background:linear-gradient(160deg,#e2a45c,#6b3413 60%,#e2a45c);box-shadow:0 1.2rem 3.5rem #000a,0 0 4rem #e2a45c2e;position:relative;z-index:1}
.hero-frame img{display:block;width:100%;height:auto;border-radius:.75rem}
.hero-badge{position:absolute;z-index:3;right:.9rem;bottom:4.9rem;margin:0;transform:rotate(-5deg);background:#e2a45c;color:#1a120a;font-weight:800;font-size:.85rem;letter-spacing:.02em;padding:.5rem .95rem;border-radius:.5rem;box-shadow:0 .6rem 1.4rem #0009;max-width:70%}
.hero-visual figcaption{margin-top:.7rem;font-size:.88rem;color:#b7ae99}
.hero-visual figcaption a{color:#f0bd75}
.hero-bars{margin-top:.25rem;max-width:46rem}
.hero-bars .bar-name{color:#dcd5c6}
.hero-bars .bar-track{background:#ffffff17;border-color:#6b5f45}
.hero-bars .bar-val{color:#fdf8ee}
.hero-note{font-size:.95rem;color:var(--ink-muted)}
.hero-bars .hero-note{color:#b7ae99}
@media (min-width:64rem){
  .hero-inner{grid-template-columns:1.04fr .96fr;grid-template-areas:"head visual" "tail visual" "bars bars";column-gap:3rem;align-items:start}
  .hero-head{grid-area:head}
  .hero-visual{grid-area:visual;margin-top:.4rem}
  .hero-tail{grid-area:tail}
  .hero-bars{grid-area:bars}
}
/* ---------- genome bars ---------- */
.bars{display:grid;gap:.55rem;margin:1.2rem 0}
.bar-row{display:grid;grid-template-columns:9rem 1fr 4.5rem;align-items:center;gap:.8rem}
.bar-name{font-size:.95rem;color:var(--ink-soft);text-align:right}
.bar-track{display:block;height:1.5rem;background:var(--paper-deep);border:1px solid var(--rule);border-radius:.4rem;overflow:hidden}
.bar-fill{display:block;height:100%;width:var(--w);background:linear-gradient(90deg,var(--modern),var(--neand));border-radius:.25rem}
.bar-fill[data-w="2.0"]{--w:2%}.bar-fill[data-w="7.5"]{--w:7.5%}.bar-fill[data-w="100.0"]{--w:100%}
.nf{padding-top:4rem}
.js .bar-fill{width:0;transition:width 1.2s ease}
.js .bars.grown .bar-fill{width:var(--w)}
.bar-val{font-weight:700;font-variant-numeric:tabular-nums}
.hero-note{font-size:.95rem;color:var(--ink-muted)}
/* ---------- descent: down the shaft ---------- */
.descent{--p:1;position:relative;padding:3.5rem 0;overflow:clip;color:#f5efe3;background:
  radial-gradient(40rem 20rem at 50% 0%,#2c1a0d 0%,#2c1a0d00 60%),
  linear-gradient(180deg,#0b0705 0%,#150e07 50%,#0b0705 100%);border-top:1px solid #000;border-bottom:1px solid #000}
.descent .wrap{position:relative}
.descent h2{color:#fdf8ee}
.descent .section-intro{color:#dcd5c6}
.gauge{position:absolute;left:max(.6rem,calc(50% - 36rem));top:0;bottom:0;width:.3rem;border-radius:1rem;background:#ffffff14;overflow:hidden}
.gauge::after{content:"";position:absolute;left:0;right:0;top:0;height:calc(var(--p) * 100%);background:linear-gradient(180deg,#f0bd75,#7a2e12)}
.counter{text-align:center;margin:1.5rem auto;max-width:64rem;padding:0 var(--gutter);position:relative}
.counter-num{font-family:var(--display);font-weight:850;font-size:clamp(2.6rem,11vw,7rem);line-height:1;margin:0;font-variant-numeric:tabular-nums;color:#fdf8ee;text-shadow:0 0 3rem #e2a45c55}
.counter-cap{color:#b7ae99;font-size:.95rem;margin:.5rem 0 0}
.descent-cards{list-style:none;margin:2rem 0 0;padding:0;display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(12rem,1fr));counter-reset:depth}
.descent-cards li{background:#211710;border:1px solid #4a3a26;border-left:4px solid #e2a45c;border-radius:.8rem;padding:1rem 1.1rem;box-shadow:0 .8rem 2rem #0008;position:relative}
.descent-cards li::before{counter-increment:depth;content:"0" counter(depth);position:absolute;right:.9rem;top:.55rem;font-family:var(--display);font-weight:800;font-size:.85rem;color:#8a7a5c}
.descent-cards h3{margin:0 .1rem .4rem 0;font-size:1.05rem;color:#f0bd75;max-width:85%}
.descent-cards p{margin:0;font-size:.95rem;color:#e9e1d1}
/* ---------- prose sections ---------- */
.discovery,.bones,.genome,.not,.timeline,.game,.sources{padding:3rem 0}
.pull{margin:2rem 0;padding:0 0 0 1.2rem;border-left:4px solid var(--accent)}
.pull blockquote{margin:0;font-family:var(--display);font-size:1.3rem;line-height:1.4}
.pull figcaption{color:var(--ink-muted);font-size:.95rem;margin-top:.5rem}
.bone-list,.not-list{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;gap:1.2rem}
.bone-list li,.not-list li{background:var(--surface);border:1px solid var(--rule);border-radius:.8rem;padding:1.2rem 1.3rem;box-shadow:var(--shadow)}
.bone-list h3,.not-list h3{margin:0 0 .4rem}
.bone-list p,.not-list p{margin:0;color:var(--ink-soft)}
.bone-list{counter-reset:bone}
.bone-list li{position:relative;padding-left:3.4rem}
.bone-list li::before{counter-increment:bone;content:counter(bone,upper-roman);position:absolute;left:1.1rem;top:1.15rem;font-family:var(--display);font-weight:800;color:var(--accent-text)}
.seal{margin:0 0 1.2rem}
.seal span{display:inline-block;border:3px double var(--accent-text);color:var(--accent-text);font-family:var(--display);font-weight:800;font-size:.92rem;letter-spacing:.14em;text-transform:uppercase;padding:.5rem 1.1rem;border-radius:.35rem;transform:rotate(-3.5deg);opacity:.92}
/* ---------- genome extras ---------- */
.seg-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;margin:1.2rem 0 .4rem}
.seg-block{display:block;background:var(--neand);color:var(--on-accent);border-radius:.5rem;padding:.9rem .6rem;text-align:center;font-weight:700;font-size:.9rem}
.js .seg-block{opacity:0;transform:translateY(8px);transition:opacity .6s ease,transform .6s ease}
.js .seg-strip.grown .seg-block{opacity:1;transform:none}
.js .seg-strip.grown .seg-block:nth-child(2){transition-delay:.25s}
.js .seg-strip.grown .seg-block:nth-child(3){transition-delay:.5s}
.table-scroll{overflow-x:auto;margin:1rem 0}
table.ped{border-collapse:collapse;width:100%;min-width:22rem;background:var(--surface);border:1px solid var(--rule);border-radius:.6rem;overflow:hidden}
table.ped th,table.ped td{padding:.55rem .9rem;text-align:left;border-bottom:1px solid var(--rule);font-variant-numeric:tabular-nums}
table.ped thead th{background:var(--paper-deep);font-size:.9rem;color:var(--ink-muted)}
table.ped tr.hit th,table.ped tr.hit td{background:color-mix(in srgb,var(--accent) 14%,var(--surface));font-weight:700}
table.ped caption{caption-side:top;text-align:left;font-size:.92rem;color:var(--ink-muted);padding:0 0 .5rem}
/* ---------- figures ---------- */
.figure{margin:2rem 0}
.figure img{display:block;width:100%;height:auto;border-radius:.8rem;box-shadow:var(--shadow)}
.figure figcaption{margin-top:.6rem;font-size:.92rem;color:var(--ink-muted)}
.fig-pair{display:grid;gap:1.5rem}
@media (min-width:64rem){.fig-pair{grid-template-columns:1fr 1fr}.fig-pair .figure{margin:1.5rem 0}}
/* ---------- timeline ---------- */
.tl-list{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;gap:0}
.tl-list li{display:grid;grid-template-columns:4.5rem 1fr;gap:1rem;padding:1rem 0;border-top:1px solid var(--rule)}
.tl-list li:last-child{border-bottom:1px solid var(--rule)}
.tl-year{font-family:var(--display);font-weight:800;font-size:1.3rem;color:var(--accent-text);font-variant-numeric:tabular-nums}
.tl-list h3{margin:0 0 .2rem;font-size:1.1rem}
.tl-list p{margin:0;color:var(--ink-soft)}
/* ---------- game ---------- */
.cards{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;gap:1rem}
.card{background:var(--surface);border:1px solid var(--rule);border-radius:.8rem;padding:1.2rem 1.3rem;box-shadow:var(--shadow)}
.card-num{font-family:var(--display);font-weight:800;color:var(--accent-text);margin:0}
.card-q{font-weight:700;margin:.3rem 0 .8rem}
.card-buttons{display:flex;gap:.7rem;flex-wrap:wrap}
.card-buttons[hidden]{display:none}
.card-buttons button{font:inherit;font-weight:700;min-height:2.75rem;padding:.5rem 1.3rem;border-radius:999px;border:2px solid var(--accent-text);background:none;color:var(--accent-text);cursor:pointer}
.card-buttons button:hover{background:var(--accent-text);color:var(--on-accent)}
.card.answered .card-buttons button{opacity:.45}
.card.answered .card-buttons button.picked{opacity:1;background:var(--accent-text);color:var(--on-accent)}
.card-answer{margin-top:.8rem}
.card-answer summary{cursor:pointer;font-weight:700;color:var(--accent-text);min-height:2.75rem;display:inline-flex;align-items:center}
.card-verdict{font-weight:700}
.card-verdict:empty{display:none}
.card.right{border-color:var(--modern)}
.card.wrong{border-color:var(--neand)}
.scoreboard{margin-top:1.5rem}
.score{font-family:var(--display);font-size:1.4rem;font-weight:800}
.score-done{min-height:1.6em;color:var(--ink-soft)}
.score-actions{display:flex;gap:.7rem;align-items:center;flex-wrap:wrap}
.btn{font:inherit;font-weight:700;min-height:2.75rem;padding:.5rem 1.3rem;border-radius:999px;cursor:pointer;border:2px solid var(--accent-text);background:var(--accent-text);color:var(--on-accent)}
.btn.ghost{background:none;color:var(--accent-text)}
.share-status{color:var(--ink-muted);font-size:.9rem}
/* ---------- sources / footer ---------- */
.src-group{margin-bottom:1.5rem}
.src-group h3{font-size:1.1rem;margin:0 0 .4rem}
.src-group ul,.img-credits{margin:0;padding-left:1.2rem;color:var(--ink-soft)}
.src-group li,.img-credits li{margin-bottom:.4rem}
.img-heading{font-size:1.1rem}
footer.site{border-top:1px solid var(--rule);padding:1.5rem var(--gutter) 3rem;color:var(--ink-muted);font-size:.95rem}
footer.site .wrap{max-width:64rem;padding:0}
@media (max-width:40rem){
  body{font-size:1.05rem}
  .hero-inner{padding-top:6.5rem}
  .hero-num{font-size:clamp(2.9rem,17vw,4rem)}
  .hero-badge{font-size:.78rem;bottom:6.2rem}
  .bar-row{grid-template-columns:6.5rem 1fr 3.5rem;gap:.5rem}
  .bar-name{font-size:.82rem}
  .tl-list li{grid-template-columns:3.8rem 1fr}
  .seg-block{font-size:.78rem;padding:.8rem .3rem}
}
@keyframes torch{0%,100%{opacity:.55}45%{opacity:.85}60%{opacity:.7}}
.hero .torch{position:absolute;left:8%;bottom:-6rem;width:22rem;height:22rem;border-radius:50%;background:radial-gradient(closest-side,#e2a45c55,#e2a45c00 70%);animation:torch 5s ease-in-out infinite;pointer-events:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .bar-fill{width:var(--w);transition:none}
  .js .seg-block{opacity:1;transform:none;transition:none}
  .hero .torch{animation:none;opacity:.7}
}