:root{
  --ground:#07090d;
  --ground-2:#0d1016;
  --ink:#ebe9e2;
  --ink-2:#bfc2c9;
  --muted:#8d929c;
  --rule:rgba(235,233,226,.13);
  --rule-2:rgba(235,233,226,.24);
  --pen:#8fa0ff;
  --pen-ink:#0b0f2a;
  --amber:#d8a36c;
  --serif:"Newsreader","Iowan Old Style",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --gutter:clamp(16px,4.4vw,56px);
  --maxw:1240px;
  --ease:cubic-bezier(.16,1,.3,1);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--ground);scrollbar-color:var(--rule-2) var(--ground)}
html,body{margin:0;padding:0;overflow-x:hidden}
body{background:var(--ground);color:var(--ink);font:400 1.0625rem/1.6 var(--serif);font-optical-sizing:auto}
::selection{background:var(--pen);color:var(--pen-ink)}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--ground)}
::-webkit-scrollbar-thumb{background:var(--rule-2);border-radius:5px;border:2px solid var(--ground)}
a{color:var(--ink);text-decoration-color:var(--rule-2);text-underline-offset:.22em;text-decoration-thickness:1px}
a:hover{color:var(--pen);text-decoration-color:var(--pen)}
:focus-visible{outline:1.5px solid var(--pen);outline-offset:3px;border-radius:2px}
h1,h2,h3{font-weight:400;margin:0;text-wrap:balance;letter-spacing:-.015em}
p{margin:0}
button{font:inherit;color:inherit}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.01em}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px var(--gutter);transition:background .4s var(--ease),border-color .4s var(--ease);border-bottom:1px solid transparent}
.nav.stuck{background:rgba(7,9,13,.82);border-bottom-color:var(--rule);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.mark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:1.12rem;letter-spacing:-.01em;white-space:nowrap}
.mark svg{width:30px;height:20px;flex:none;display:block}
.nav ul{list-style:none;display:flex;gap:clamp(14px,2.6vw,32px);margin:0;padding:0}
.nav ul a{font-family:var(--mono);font-size:.78rem;text-decoration:none;color:var(--ink-2)}
.nav ul a:hover,.nav ul a[aria-current="true"]{color:var(--ink)}
@media (max-width:520px){.nav ul{gap:14px}.nav ul a{font-size:.72rem}.mark span{display:none}}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:flex-end;padding:120px var(--gutter) clamp(56px,11vh,120px);overflow:hidden;isolation:isolate}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:-1}
.hero-in{max-width:var(--maxw);margin:0 auto;width:100%}
.hero h1{font-size:clamp(3.3rem,10.5vw,6rem);line-height:.95;letter-spacing:-.035em;font-weight:360;display:inline-block;text-shadow:0 0 18px var(--ground),0 0 42px rgba(7,9,13,.85)}
.sub{position:relative;margin-top:clamp(20px,3.5vh,34px);max-width:40rem;padding-top:48px}
.sub svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.words{position:relative;margin:0;text-shadow:0 0 12px var(--ground),0 0 26px rgba(7,9,13,.8);font-size:clamp(1.2rem,2.3vw,1.55rem);line-height:1.5;color:var(--ink-2);font-weight:350}
.w{display:inline;cursor:default;border-radius:2px;transition:color .25s var(--ease);-webkit-tap-highlight-color:transparent}
.w.lit{color:var(--ink)}
.w.on{color:var(--pen);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.25em}
.words .w:focus-visible{outline-offset:1px}
.hero .arcs path{fill:none;stroke:var(--pen);stroke-linecap:round}

/* shared section frame */
main{position:relative;z-index:1}
#bg{position:fixed;inset:0;width:100%;height:100%;display:block;z-index:0;pointer-events:none;opacity:0;transition:opacity .2s linear}
.sec{position:relative;padding:clamp(96px,16vh,168px) var(--gutter)}
.sec-in{max-width:var(--maxw);margin:0 auto}
.sec h2{font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.02;letter-spacing:-.03em;font-weight:360;margin-bottom:22px}
.lede{font-size:clamp(1.12rem,1.6vw,1.3rem);line-height:1.5;color:var(--ink-2);max-width:36rem}

/* latest experiment: one clickable row that plots itself */
.sec-latest{padding-top:clamp(56px,9vh,96px)}
.xlist{list-style:none;margin:clamp(28px,5vh,48px) 0 0;padding:0;border-top:1px solid var(--rule-2)}
.xlist li{border-bottom:1px solid var(--rule)}
.xrow{display:grid;grid-template-columns:56px minmax(0,1fr);gap:clamp(16px,3vw,32px);align-items:start;padding:clamp(22px,3vw,32px) 0;color:inherit;text-decoration:none}
.xg{width:56px;height:56px;display:block;margin-top:4px}
.xg *{fill:none;stroke:var(--ink);stroke-width:1;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.xg .f{stroke:var(--rule-2)}
.xg .b{stroke:var(--pen);stroke-width:1.4}
.xg .a{stroke:var(--amber);stroke-width:1.4}
.xg .d{fill:var(--pen);stroke:none}
.xrow h3{font-size:clamp(1.3rem,2.2vw,1.7rem);letter-spacing:-.02em;line-height:1.15;text-wrap:balance;transition:color .2s var(--ease)}
.xmeta{display:block;margin-top:8px;color:var(--muted);font-size:.78rem}
.xrow p{color:var(--ink-2);max-width:40rem;margin-top:10px}
a.xrow:hover h3{color:var(--pen)}
a.xrow:focus-visible{outline-offset:6px}
@media (max-width:560px){
  .xrow{grid-template-columns:40px minmax(0,1fr);gap:14px}
  .xg{width:40px;height:40px}
}
.xrow.plot svg path:not([stroke-dasharray]){transition:stroke-dashoffset 1.3s var(--ease)}
.xrow.plot:not(.drawn) svg path:not([stroke-dasharray]){opacity:0}
.xrow.plot svg circle{opacity:0;transition:opacity .6s ease .8s}
.xrow.plot.drawn svg circle{opacity:1}

/* experiment page header shared by WP-002 and WP-003: title, one line, mono ID and author */
.sec-paper:has(.x3){padding-top:clamp(80px,11vh,112px);padding-bottom:clamp(40px,6vh,72px)}
.sec-paper:has(.x3) .sec-in{max-width:1480px}
.x3 h1{font-weight:360;font-size:clamp(1.9rem,4.4vw,3.1rem);line-height:1.08;letter-spacing:-.01em;text-wrap:balance;margin:0 0 10px}
.x3-lede{color:var(--ink-2);font-weight:360;font-size:clamp(1rem,1.5vw,1.15rem);line-height:1.5;max-width:760px;margin:0 0 8px}
.x3-meta{color:var(--muted);font-size:.74rem;margin:0 0 clamp(20px,3.5vh,32px)}

/* experiment page: title block then the toy model, no 3D scene behind */
.sec-paper{padding-top:clamp(104px,16vh,150px)}
.wp.solo{margin-top:0}
.wp.solo h1{font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.02;letter-spacing:-.03em;font-weight:360;margin:4px 0 14px}
.wp.solo .wp-top p{max-width:46rem;font-size:clamp(1.05rem,1.4vw,1.2rem)}

/* what we do */

/* research */
.wp{margin-top:clamp(28px,5vh,48px);border:1px solid var(--rule-2);background:rgba(9,11,16,.88);border-radius:3px}
.wp-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 24px;padding:clamp(20px,3vw,32px);border-bottom:1px solid var(--rule)}
@media (max-width:640px){.wp-top{grid-template-columns:1fr}}
.wp-id{color:var(--muted);font-weight:300}
.wp h3{font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:-.02em;line-height:1.1;margin:6px 0 12px}
.wp-top p{color:var(--ink-2);max-width:42rem}
.wp-links{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:20px}
.wp-link{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:var(--pen);text-decoration-color:var(--pen)}
.wp-link:hover{color:var(--ink);text-decoration-color:var(--ink)}
.status{align-self:start;display:inline-flex;align-items:center;gap:8px;color:var(--ink-2);border:1px solid var(--rule-2);padding:6px 10px;border-radius:2px;white-space:nowrap}
.status svg{flex:none}
.wp-fig{padding:clamp(20px,3vw,32px)}
.fig-label{color:var(--amber);margin-bottom:14px;display:block}
#chart{display:block;width:100%;height:230px;cursor:ew-resize;touch-action:pan-y}
.legend{display:flex;flex-wrap:wrap;gap:6px 22px;color:var(--ink-2);margin:12px 0 4px}
.legend span{display:inline-flex;align-items:center;gap:8px}
.legend i{width:20px;border-top:2px solid;display:inline-block}
.cells-row{display:grid;grid-template-columns:5.6em minmax(0,1fr);gap:8px 14px;align-items:center;margin-top:14px}
.cells-row .mono{color:var(--muted)}
.cells-row b{display:block;color:var(--ink-2);font-weight:500}
canvas.cells{display:block;width:100%;height:50px}
#wpfig #chart{height:260px;cursor:default}
#wpfig canvas.cells{height:72px}
#wpfig .readout{min-height:3.2em}
@media (min-width:900px){#wpfig .readout{min-height:1.6em}}
.legend i.dash{border-top:1px dashed var(--muted)}
.keys{display:flex;flex-wrap:wrap;gap:6px 22px;color:var(--ink-2);margin-top:14px}
.keys span{display:inline-flex;align-items:center;gap:8px}
.keys i{width:12px;height:12px;display:inline-block;flex:none}
.keys .k-clean{background:rgba(235,233,226,.5)}
.keys .k-detail{background:var(--amber)}
.keys .k-moby{background:repeating-linear-gradient(135deg,var(--pen) 0 1.2px,rgba(143,160,255,.16) 1.2px 4.5px)}
.keys .k-note{border:1px solid rgba(143,160,255,.7);background:linear-gradient(var(--pen),var(--pen)) center/6px 1.5px no-repeat}
.keys[data-kind="detail"] .only-moby,.keys[data-kind="moby"] .only-detail{display:none}
.read-btn{display:inline-flex;align-items:center;gap:8px;background:var(--pen);color:var(--pen-ink);border:1px solid var(--pen);border-radius:2px;padding:8px 12px;cursor:pointer;font-weight:500;transition:background .2s var(--ease),color .2s var(--ease)}
.read-btn:hover{background:transparent;color:var(--pen)}
.read-btn svg{transition:transform .2s var(--ease)}
.read-btn[aria-expanded="true"] svg{transform:rotate(180deg)}
.wp-links{align-items:center}
.reader{border-bottom:1px solid var(--rule);padding:clamp(12px,2vw,20px) clamp(12px,3vw,32px);background:rgba(13,16,22,.6);scroll-margin-top:72px}
.reader[hidden]{display:none}
.reader-load{display:flex;align-items:center;gap:12px;color:var(--ink-2);min-height:1.6em;margin-bottom:10px}
.reader-load[hidden]{display:none}
.reader-load a{color:var(--pen)}
.rbar{width:88px;height:2px;background:var(--rule-2);position:relative;overflow:hidden;flex:none}
.rbar i{position:absolute;inset:0 auto 0 0;width:0;background:var(--pen);transition:width .3s var(--ease)}
.rbar.ind i{width:36%;animation:slide 1.2s cubic-bezier(.65,0,.35,1) infinite}
.reader-pages{max-height:min(82svh,1100px);overflow:auto;overscroll-behavior:contain;display:flex;flex-direction:column;align-items:center;gap:12px;padding:2px}
.reader-pages .pg{width:100%;max-width:860px;background:#fff;position:relative;flex:none}
.reader-pages .pg canvas{display:block;width:100%;height:100%}
.gridnote{color:var(--muted);margin-top:12px;max-width:44rem;font-size:.95rem}
.readout{margin-top:10px;color:var(--ink-2);min-height:1.6em}
.readout b{font-weight:500}
.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px;padding:clamp(18px,3vw,28px) clamp(20px,3vw,32px);border-top:1px solid var(--rule);background:rgba(13,16,22,.6)}
@media (max-width:620px){.controls{grid-template-columns:1fr}}
.ctl label,.ctl .lbl{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:6px;font-size:1rem}
.ctl output{font-family:var(--mono);font-size:.76rem;color:var(--pen)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;margin:0;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:linear-gradient(to right,var(--pen) var(--p,50%),var(--rule-2) var(--p,50%))}
input[type=range]::-moz-range-track{height:2px;background:var(--rule-2)}
input[type=range]::-moz-range-progress{height:2px;background:var(--pen)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--ground);border:1.5px solid var(--pen);margin-top:-6px}
input[type=range]::-moz-range-thumb{width:11px;height:11px;border-radius:50%;background:var(--ground);border:1.5px solid var(--pen)}
.switch{display:flex;align-items:center;gap:10px;cursor:pointer}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.switch .tr{width:34px;height:18px;border-radius:9px;border:1px solid var(--rule-2);position:relative;transition:border-color .25s var(--ease);flex:none}
.switch .tr::after{content:"";position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;background:var(--muted);transition:transform .25s var(--ease),background .25s var(--ease)}
.switch input:checked + .tr{border-color:var(--pen)}
.switch input:checked + .tr::after{transform:translateX(16px);background:var(--pen)}
.switch input:focus-visible + .tr{outline:1.5px solid var(--pen);outline-offset:3px}
.transport{grid-column:1/-1;display:flex;align-items:center;gap:12px}
.icon-btn{width:32px;height:32px;border-radius:50%;border:1px solid var(--rule-2);background:transparent;display:grid;place-items:center;cursor:pointer;flex:none;color:var(--ink-2);transition:border-color .2s var(--ease),color .2s var(--ease)}
.icon-btn:hover{border-color:var(--pen);color:var(--pen)}
.transport .t{color:var(--muted);min-width:4.6em}
.transport input{flex:1}
.textbtn{background:none;border:0;padding:4px;cursor:pointer;color:var(--muted);text-decoration:underline;text-decoration-color:var(--rule-2);text-underline-offset:.22em}
.textbtn:hover{color:var(--pen)}

/* members */
.stage{position:relative;margin-top:clamp(24px,4vh,40px);height:min(78vh,760px);min-height:520px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:pan-y;cursor:grab}
.stage canvas.pointing{cursor:pointer}
.stage canvas.dragging{cursor:grabbing}
.stage-tools{position:absolute;left:0;bottom:14px;display:flex;align-items:center;gap:8px;z-index:2}
.zoom-note{position:absolute;left:50%;top:18px;transform:translateX(-50%);background:rgba(7,9,13,.9);border:1px solid var(--rule-2);padding:8px 12px;border-radius:2px;color:var(--ink-2);opacity:0;transition:opacity .3s var(--ease);pointer-events:none;z-index:3;white-space:nowrap}
.zoom-note.show{opacity:1}

.person{position:absolute;top:0;right:0;bottom:0;width:min(360px,38%);padding:22px 0 22px 26px;border-left:1px solid var(--rule);background:linear-gradient(90deg,rgba(7,9,13,.6),rgba(7,9,13,.9));display:flex;flex-direction:column;gap:14px;overflow:auto;z-index:2;opacity:0;transform:translateX(12px);transition:opacity .45s var(--ease),transform .45s var(--ease);pointer-events:none}
.person.show{opacity:1;transform:none;pointer-events:auto}
.person[hidden]{display:flex}
@media (max-width:760px){
  .stage{height:auto;min-height:0}
  .stage canvas{position:relative;height:62vh;min-height:420px}
  .person{position:relative;width:auto;border-left:0;border-top:1px solid var(--rule);padding:20px 0 64px;background:none;display:none;transform:none}
  .person.show{display:flex}
}
.back{align-self:flex-start;display:inline-flex;align-items:center;gap:8px;background:none;border:1px solid var(--rule-2);border-radius:2px;padding:7px 11px;cursor:pointer;color:var(--ink-2)}
.back:hover{border-color:var(--pen);color:var(--pen)}
.person h3{font-size:2rem;letter-spacing:-.02em;line-height:1.05}
.person .prog{color:var(--muted);margin-top:4px}
.person .plinks{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px}
.person .plinks a{color:var(--ink-2);text-decoration-color:var(--rule-2)}
.person .plinks a:hover{color:var(--pen)}
.person .plinks[hidden]{display:none}
.facts{display:flex;flex-direction:column;border-top:1px solid var(--rule)}
.fact{display:grid;grid-template-columns:7.2rem minmax(0,1fr);gap:4px 12px;text-align:left;background:none;border:0;border-bottom:1px solid var(--rule);padding:12px 0;cursor:pointer;color:var(--ink-2);font-size:.98rem;line-height:1.45}
.fact .mono{color:var(--muted);padding-top:3px}
.fact > span:only-child{grid-column:2}
.fact:hover,.fact[aria-pressed="true"]{color:var(--ink)}
.fact[aria-pressed="true"] .mono{color:var(--pen)}
.person .loadline{color:var(--muted)}
.view-btns{display:flex;gap:8px;flex-wrap:wrap}
.view-btns button{background:none;border:1px solid var(--rule-2);border-radius:2px;padding:6px 10px;cursor:pointer;color:var(--ink-2)}
.view-btns button[aria-pressed="true"]{border-color:var(--pen);color:var(--pen)}

.roster{margin-top:18px;display:flex;flex-wrap:wrap;gap:6px 18px;align-items:baseline}
.roster button{background:none;border:0;padding:4px 0;cursor:pointer;color:var(--ink-2);font-size:1rem;text-decoration:underline;text-decoration-color:var(--rule-2);text-underline-offset:.22em}
.roster button:hover,.roster button[aria-current="true"]{color:var(--pen);text-decoration-color:var(--pen)}

/* loading line for anything slow */
.loadbar{position:fixed;left:var(--gutter);bottom:18px;z-index:15;display:flex;align-items:center;gap:12px;color:var(--ink-2);background:rgba(7,9,13,.9);border:1px solid var(--rule);padding:9px 12px;border-radius:2px;transition:opacity .3s var(--ease)}
.loadbar[hidden]{display:none}
.bar{width:88px;height:2px;background:var(--rule-2);position:relative;overflow:hidden}
.bar::after{content:"";position:absolute;inset:0 auto 0 0;width:36%;background:var(--pen);animation:slide 1.2s cubic-bezier(.65,0,.35,1) infinite}
@keyframes slide{from{transform:translateX(-100%)}to{transform:translateX(280%)}}

footer{position:relative;z-index:1;border-top:1px solid var(--rule);padding:36px var(--gutter) 48px;background:var(--ground)}
.foot-in{max-width:var(--maxw);margin:0 auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 40px;color:var(--muted)}
.foot-in nav{display:flex;flex-wrap:wrap;gap:8px 24px}
.foot-in a{color:var(--ink-2)}

@media (prefers-reduced-motion:reduce){
  .rbar.ind i{animation:none;width:100%;opacity:.5}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .bar::after{animation:none;width:100%;opacity:.5}
}

/* what we do: plotted pillars */
.pillars{list-style:none;margin:clamp(36px,5vw,64px) 0 0;padding:0;border-top:1px solid var(--rule-2)}
.pillar{display:grid;grid-template-columns:120px minmax(0,4fr) minmax(0,6fr);gap:clamp(16px,3vw,48px);align-items:start;padding:clamp(22px,3vw,34px) 0;border-bottom:1px solid var(--rule)}
.pillar svg{width:100%;max-width:120px;height:auto;display:block}
.pillar svg *{fill:none;stroke:var(--ink);stroke-width:1;stroke-linecap:round;vector-effect:non-scaling-stroke}
.pillar svg .b{stroke:var(--pen)}
.pillar svg .d{fill:var(--pen);stroke:none}
.pillar h3{font-size:clamp(1.45rem,2.2vw,1.9rem);line-height:1.15;letter-spacing:-.012em;font-weight:400}
.pillar .cad{display:block;margin-top:.55rem;color:var(--pen)}
.pillar p{color:var(--ink-2);max-width:40rem;padding-top:.35rem}
@media (max-width:720px){
  .pillar{grid-template-columns:72px minmax(0,1fr);row-gap:10px}
  .pillar p{grid-column:1/-1;padding-top:0}
}
.pillars.plot .pillar svg path:not([stroke-dasharray]){stroke-dasharray:1 1;stroke-dashoffset:1;transition:stroke-dashoffset 1.3s var(--ease)}
.pillars.plot .pillar svg path[stroke-dasharray],.pillars.plot .pillar svg circle{opacity:0;transition:opacity .6s ease .8s}
.pillars.plot .pillar.drawn svg path:not([stroke-dasharray]){stroke-dashoffset:0}
.pillars.plot .pillar.drawn svg path[stroke-dasharray],.pillars.plot .pillar.drawn svg circle{opacity:1}