/* problem ends. : The Network Hub. Foundation report chrome, light first. */
:root{
  --bg:#FFFFFF;--ink:#1B1B1F;--mute:#55555D;--grey:#8A8A92;--line:#E3E2DE;
  --tint:#F6F6F3;--tint2:#EEEDE9;--calm:#EDF3EF;--calm-line:#CFE0D6;
  --c1:#3D5A80;--c2:#1E6B44;--c3:#5C2A4F;--c4:#B07A2A;--c5:#4A5560;
  --sans:'Manrope',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --serif:'Newsreader',Georgia,'Times New Roman',serif;
  --mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;
  --wrap:1240px;--gut:clamp(16px,4vw,44px);--ease:cubic-bezier(.2,.7,.1,1)
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.62 var(--serif);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--sans);font-weight:800;letter-spacing:-.025em;line-height:1.08;margin:0;text-wrap:balance}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;border-radius:4px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:#fff;padding:10px 16px;
  font:700 14px var(--sans);border-radius:6px;z-index:100;text-decoration:none}
.skip:focus{top:12px}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
.stop{display:inline-block;width:.2em;height:.2em;border-radius:50%;background:currentColor;
  margin-left:.04em;vertical-align:baseline}

/* ---------- top bar ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(1.2) blur(10px);backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:18px;min-height:68px}
.brand{display:inline-flex;align-items:center;flex:0 0 auto;padding:6px 0;text-decoration:none}
.brand img{width:168px;height:auto}
.mainnav{display:flex;gap:4px;margin-left:auto;align-items:center}
.mainnav a{font:600 14px/1 var(--sans);text-decoration:none;padding:10px 11px;border-radius:999px;color:var(--ink)}
.mainnav a:hover{background:var(--tint)}
.mainnav a[aria-current="page"]{background:var(--ink);color:#fff}
.navtoggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:999px;
  padding:9px 14px;font:700 13px/1 var(--sans);cursor:pointer}
.navtoggle span{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ink);margin-left:8px;vertical-align:middle}

/* group launcher */
.launch{position:relative;flex:0 0 auto}
.launch>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:8px;
  font:700 12.5px/1 var(--sans);border:1px solid var(--line);border-radius:999px;padding:9px 13px;background:#fff}
.launch>summary::-webkit-details-marker{display:none}
.launch>summary:hover{border-color:var(--ink)}
.launch .dots{display:inline-grid;grid-template-columns:repeat(3,4px);gap:2px}
.launch .dots i{width:4px;height:4px;border-radius:50%;background:var(--ink);display:block}
.launch .dots i:nth-child(even){background:var(--grey)}
.launch-panel{position:absolute;right:0;top:calc(100% + 10px);width:min(760px,calc(100vw - 32px));
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 24px 60px rgba(27,27,31,.14);
  padding:20px 22px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px 22px;max-height:72vh;overflow:auto}
.launch-panel h3{font:800 10.5px/1.2 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mute);margin:0 0 8px}
.launch-panel li a{display:block;font:500 13.5px/1.35 var(--sans);text-decoration:none;padding:4px 0}
.launch-panel li a:hover{text-decoration:underline}
.launch-panel li a[aria-current="page"]{font-weight:800}
.launch-panel li a[aria-current="page"]::after{content:" (you are here)";color:var(--mute);font-weight:500}
.launch-head{grid-column:1/-1;display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:10px}
.launch-head strong{font:800 15px var(--sans)}
.launch-head span{font:12px var(--mono);color:var(--mute)}

/* help band */
.helpband{background:var(--calm);border-bottom:1px solid var(--calm-line);font:500 14px/1.45 var(--sans)}
.helpband .wrap{display:flex;gap:6px 16px;flex-wrap:wrap;align-items:center;padding-top:9px;padding-bottom:9px}
.helpband strong{font-weight:800}
.helpband a{font-weight:700}
.helpband small{color:var(--mute);font-size:12.5px}

/* ---------- section scaffolding (report numbering) ---------- */
.sec{padding:clamp(64px,9vw,120px) 0;position:relative}
.sec+.sec{border-top:1px solid var(--line)}
.sechead{display:grid;grid-template-columns:200px 1fr;gap:24px;margin-bottom:clamp(32px,5vw,56px);align-items:end}
.secnum{font:500 12px/1.3 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mute);
  border-top:2px solid var(--ink);padding-top:10px;align-self:start}
.secnum b{display:block;font:800 40px/1 var(--sans);letter-spacing:-.04em;color:var(--ink);margin-bottom:6px;text-transform:none}
.sechead h2{font-size:clamp(2rem,1.2rem + 3vw,3.6rem)}
.sechead p{font-size:clamp(1.05rem,1rem + .3vw,1.25rem);color:var(--mute);max-width:60ch;margin:14px 0 0}

/* ---------- hero ---------- */
.hero{padding:clamp(36px,6vw,76px) 0 clamp(48px,7vw,90px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(28px,4vw,64px);align-items:start}
.hero .rv{padding-top:clamp(0px,4vw,56px)}
.cover{font:500 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mute);
  display:flex;gap:10px 18px;flex-wrap:wrap;border-top:2px solid var(--ink);padding-top:12px;margin-bottom:28px}
.hero h1{font-size:clamp(2.7rem,1.2rem + 4.6vw,5.3rem);line-height:.98;letter-spacing:-.045em}
.hero h1 .stop{animation:beat 3.6s var(--ease) infinite}
@keyframes beat{0%,70%,100%{transform:scale(1)}80%{transform:scale(1.35)}}
.hero .lede{font-size:clamp(1.15rem,1rem + .6vw,1.45rem);line-height:1.5;color:#2E2E34;max-width:34ch;margin:26px 0 30px}
.ctas{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;font:700 15px/1 var(--sans);text-decoration:none;
  border-radius:999px;padding:15px 22px;border:1.5px solid var(--ink);transition:background .2s,color .2s}
.btn.solid{background:var(--ink);color:#fff}
.btn.solid:hover{background:#000}
.btn.ghost:hover{background:var(--tint)}
.btn .stop{width:7px;height:7px}

/* orbit stage */
.orbitwrap{display:grid;gap:16px}
.orbit{position:relative;aspect-ratio:1/1;width:100%;max-width:560px;margin:0 auto;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,#FFFFFF 0 18%,var(--tint) 62%,#F1F0EC 100%)}
.orbit svg.rings{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.orbit .ring{fill:none;stroke:#D9D8D3;stroke-width:1.2;vector-effect:non-scaling-stroke}
.orbit .ring.dash{stroke-dasharray:2 7}
.orbit .spoke{stroke:var(--ink);stroke-width:1.6;vector-effect:non-scaling-stroke;opacity:0;transition:opacity .3s}
.orbit.has-sel .spoke{opacity:1}
.hub{position:absolute;left:50%;top:50%;width:15%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;
  background:var(--ink);border:0;cursor:pointer;display:grid;place-items:center;
  box-shadow:0 0 0 10px rgba(27,27,31,.06),0 0 0 22px rgba(27,27,31,.03)}
.hub span{font:800 11px/1.1 var(--sans);color:#fff;text-align:center;letter-spacing:-.01em}
.onode{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:none;border:0;padding:0;cursor:pointer;
  display:flex;align-items:center;gap:8px;white-space:nowrap;z-index:2}
.onode .od{width:30px;height:30px;border-radius:50%;background:var(--cc);flex:0 0 auto;
  box-shadow:0 0 0 4px #fff,0 6px 16px rgba(27,27,31,.18);transition:transform .35s var(--ease)}
.onode .ol{font:700 13px/1 var(--sans);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 10px;
  transition:background .25s,color .25s}
.onode .ol b{font-weight:800;color:var(--mute)}
.onode.flip{flex-direction:row-reverse}
.onode:hover .od,.onode[aria-pressed="true"] .od{transform:scale(1.3)}
.onode[aria-pressed="true"] .ol{background:var(--ink);color:#fff;border-color:var(--ink)}
.onode[aria-pressed="true"] .ol b{color:#C9C9CF}
.onode:focus-visible{outline:none}
.onode:focus-visible .ol{outline:3px solid var(--ink);outline-offset:2px}
.chips{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:9px 13px;font:700 13px/1 var(--sans);cursor:pointer}
.chip i{width:10px;height:10px;border-radius:50%;background:var(--cc)}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.chip:hover{border-color:var(--ink)}
.opanel{border:1px solid var(--line);border-radius:16px;padding:22px 24px;background:#fff;min-height:210px;
  position:relative;overflow:hidden}
.opanel::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--cc,var(--ink));transition:background .3s}
.opanel .mono{color:var(--mute)}
.opanel h3{font-size:clamp(1.6rem,1.2rem + 1.4vw,2.3rem);margin:8px 0 6px}
.opanel h3 .stop{color:var(--cc,var(--ink))}
.opanel .tg{font:700 15px var(--sans);margin:0 0 8px}
.opanel p{font-size:16.5px;color:#34343A;margin:0 0 12px;max-width:58ch}
.opanel ul{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 14px}
.opanel li{font:600 12.5px/1 var(--sans);border:1px solid var(--line);border-radius:999px;padding:7px 10px;background:var(--tint)}
.opanel a.go{font:800 14px var(--sans);text-decoration:none;border-bottom:2px solid currentColor;padding-bottom:2px}
.opanel .fade{animation:pin .45s var(--ease)}
@keyframes pin{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- network cards ---------- */
.netgrid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.ncard{grid-column:span 2;position:relative;border:1px solid var(--line);border-radius:18px;padding:26px 24px 24px;
  background:#fff;text-decoration:none;display:flex;flex-direction:column;gap:10px;overflow:hidden;isolation:isolate;min-height:300px}
.ncard:nth-child(4),.ncard:nth-child(5){grid-column:span 3}
.ncard::before{content:"";position:absolute;z-index:-1;right:28px;top:30px;width:18px;height:18px;border-radius:50%;
  background:var(--cc);transition:transform .7s var(--ease),opacity .7s;transform-origin:center}
.ncard:hover::before,.ncard:focus-visible::before{transform:scale(70);opacity:.1}
.ncard:hover,.ncard:focus-visible{border-color:var(--cc)}
.ncard .n{font:500 12px var(--mono);color:var(--mute);letter-spacing:.08em}
.ncard h3{font-size:clamp(1.6rem,1.2rem + 1vw,2.1rem);letter-spacing:-.035em}
.ncard h3 .stop{color:var(--cc)}
.ncard .tg{font:700 15px var(--sans)}
.ncard p{font-size:16px;color:#3A3A40;margin:0}
.ncard ul{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto;padding-top:8px}
.ncard li{font:600 12px/1 var(--sans);border:1px solid var(--line);border-radius:999px;padding:6px 9px;background:rgba(255,255,255,.8)}
.ncard .dom{font:600 13px var(--mono);margin-top:4px;display:flex;justify-content:space-between;gap:8px;align-items:center}
.ncard .dom span{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--ink);display:grid;place-items:center;
  transition:background .3s,color .3s;font-family:var(--sans)}
.ncard:hover .dom span{background:var(--ink);color:#fff}
.ncard .first{position:absolute;top:24px;right:58px;font:700 11px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;
  background:var(--calm);border:1px solid var(--calm-line);border-radius:999px;padding:6px 9px}
.netintro{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,56px);margin-bottom:40px;align-items:center}
.netintro p{font-size:1.15rem;color:#2E2E34;max-width:46ch}

/* ---------- media effects ---------- */
.frame{position:relative;overflow:hidden;border-radius:18px;background:var(--tint2)}
.frame img,.frame video{width:100%;height:100%;object-fit:cover}
/* 1. duotone ink and paper, opened by a circular mask (the full stop) */
.fx-duo{aspect-ratio:16/10;clip-path:circle(6% at 82% 30%);transition:clip-path 1.6s var(--ease)}
.fx-duo.in{clip-path:circle(80% at 50% 50%)}
.fx-duo img{filter:grayscale(1) contrast(1.08)}
.fx-duo::before,.fx-duo::after{content:"";position:absolute;inset:0;pointer-events:none}
.fx-duo::before{background:#1B1B1F;mix-blend-mode:lighten}
.fx-duo::after{background:#FBFAF6;mix-blend-mode:darken}
.fx-duo:hover img{filter:grayscale(.2) contrast(1.02);transition:filter .8s}
/* 2. halftone dot screen that dissolves on hover */
.fx-half{aspect-ratio:16/9}
.fx-half img{filter:grayscale(.9) contrast(1.15);transition:filter .9s}
.fx-half::after{content:"";position:absolute;inset:0;pointer-events:none;mix-blend-mode:multiply;
  background:radial-gradient(circle,rgba(27,27,31,.55) 32%,transparent 36%) 0 0/7px 7px;transition:opacity .9s}
.fx-half:hover::after,.fx-half:focus-within::after{opacity:0}
.fx-half:hover img{filter:none}
/* 3. ken burns with film grain */
.fx-kb{aspect-ratio:4/5}
.fx-kb img{animation:kb 26s ease-in-out infinite alternate;transform-origin:30% 40%}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.16) translate(-2%,-1%)}}
.fx-kb::after{content:"";position:absolute;inset:-50%;pointer-events:none;opacity:.22;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1.2s steps(4) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}50%{transform:translate(2%,-3%)}75%{transform:translate(-1%,3%)}100%{transform:translate(0,0)}}
/* 4. focus pull on entry */
.fx-focus{aspect-ratio:16/10}
.fx-focus img{filter:blur(14px) saturate(.6);transform:scale(1.06);transition:filter 1.8s var(--ease),transform 1.8s var(--ease)}
.fx-focus.in img{filter:none;transform:none}
/* 5. method clip: duotone multiply wash with parallax drift */
.fx-para{aspect-ratio:4/3}
.fx-para video{transform:translateY(var(--py,0px)) scale(1.18);will-change:transform}
.fx-para::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(61,90,128,.28),rgba(30,107,68,.22) 50%,rgba(176,122,42,.22));
  mix-blend-mode:multiply;pointer-events:none}
.fx-para video{filter:grayscale(.85) contrast(1.05)}
.caption{font:500 12px/1.4 var(--mono);color:var(--mute);margin-top:10px;letter-spacing:.02em}

/* ---------- the full stop window (scroll scrubbed) ---------- */
.stopwin{height:230vh;position:relative;border-top:1px solid var(--line)}
.stopwin .stick{position:sticky;top:68px;height:calc(100vh - 68px);display:grid;place-items:center;overflow:hidden}
.stopwin .win{position:absolute;inset:4vh 4vw;border-radius:22px;overflow:hidden;background:#1B1B1F;
  clip-path:circle(calc(3% + var(--p,0) * 80%) at 50% 50%)}
.stopwin .win video{width:100%;height:100%;object-fit:cover;filter:grayscale(calc(1 - var(--p,0))) contrast(1.05);
  transform:scale(calc(1.25 - var(--p,0) * .25))}
.stopwin .card{position:absolute;left:max(4vw,16px);bottom:6vh;max-width:min(520px,calc(100% - 32px));background:#fff;
  border-radius:16px;padding:22px 24px;box-shadow:0 20px 50px rgba(0,0,0,.18);
  opacity:calc(var(--p,0) * 2 - .2);transform:translateY(calc((1 - var(--p,0)) * 30px))}
.stopwin .card h2{font-size:clamp(1.6rem,1.1rem + 2vw,2.6rem);margin:8px 0 10px}
.stopwin .card p{font-size:16.5px;color:#34343A;margin:0}
.stopwin .lead{position:absolute;top:8vh;left:0;right:0;text-align:center;font:800 clamp(2rem,1rem + 4vw,4.4rem)/1 var(--sans);
  letter-spacing:-.04em;opacity:calc(1 - var(--p,0) * 2.4);z-index:1;padding:0 16px}

/* ---------- method matrix ---------- */
.method{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:clamp(24px,4vw,56px);align-items:start}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px}
.step{text-align:left;border:1.5px solid var(--line);background:#fff;border-radius:14px;padding:14px 16px;cursor:pointer}
.step .mono{display:block;color:var(--mute);margin-bottom:6px}
.step strong{font:800 clamp(1rem,.9rem + .5vw,1.3rem)/1.1 var(--sans);letter-spacing:-.02em}
.step[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.step[aria-pressed="true"] .mono{color:#C9C9CF}
.matrix{width:100%;border-collapse:separate;border-spacing:0;font:600 14.5px/1.3 var(--sans)}
.matrix th,.matrix td{padding:13px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.matrix thead th{font:500 11px/1.2 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mute)}
.matrix tbody th{font:800 15.5px/1.2 var(--sans);white-space:nowrap}
.matrix tbody th a{text-decoration:none}
.matrix tbody th a:hover{text-decoration:underline}
.matrix tbody th i{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--cc);margin-right:8px}
.matrix td{color:#3A3A40;transition:background .35s,color .35s}
.matrix td.on{background:var(--tint);color:var(--ink);font-weight:800;box-shadow:inset 0 2px 0 var(--ink)}
.matrix td .ord{font:500 11px var(--mono);color:var(--mute);margin-right:6px}
.mexpl{border:1px solid var(--line);border-radius:16px;padding:22px;background:var(--tint)}
.mexpl h3{font-size:1.6rem;margin:6px 0 10px}
.mexpl p{font-size:16.5px}
.mexpl ul li{border-top:1px solid var(--line)}
.mexpl ul a{display:block;padding:10px 0;font:600 14.5px/1.35 var(--sans);text-decoration:none}
.mexpl ul a:hover{text-decoration:underline}
.note{font:500 12.5px/1.5 var(--mono);color:var(--mute);margin-top:14px}

/* ---------- library on home ---------- */
.libgrid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:clamp(24px,4vw,64px)}
.feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:center;margin-bottom:28px;
  padding-bottom:28px;border-bottom:2px solid var(--ink)}
.feature figure{margin:0}
.feature figure img{border-radius:14px;aspect-ratio:4/3;object-fit:cover;width:100%;height:auto;filter:grayscale(.35)}
.feature figcaption{font:500 11px/1.4 var(--mono);color:var(--mute);margin-top:8px}
.feature h3{font-size:clamp(1.6rem,1.2rem + 1.4vw,2.4rem);margin:8px 0 12px}
.feature h3 a{text-decoration:none}
.feature h3 a:hover{text-decoration:underline;text-decoration-thickness:2px}
.kick{font:600 11px/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.more{font:800 14px var(--sans);text-decoration:none;border-bottom:2px solid currentColor}
.items{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}
.item{padding:18px 0;border-bottom:1px solid var(--line)}
.item a{text-decoration:none;display:block}
.item h3{font-size:1.15rem;letter-spacing:-.015em;margin:6px 0 6px}
.item p{font-size:15px;color:var(--mute);margin:0}
.item a:hover h3{text-decoration:underline}
.side .blk{border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:18px;background:#fff}
.side h4{font:600 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mute);margin-bottom:8px}
.side li{border-bottom:1px solid var(--line)}
.side li:last-child{border-bottom:0}
.side li a{display:block;padding:10px 0;font:600 14.5px/1.35 var(--sans);text-decoration:none}
.side li a:hover{text-decoration:underline}
.side .noteblk p{font-size:15px;color:#3A3A40;margin:12px 0 0}

/* ---------- support directory ---------- */
.support{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:center}
.helpcard{background:var(--calm);border:1px solid var(--calm-line);border-radius:18px;padding:26px}
.helpcard h3{font-size:1.5rem;margin-bottom:10px}
.helpcard p{font-size:16.5px}
.helpcard .row{display:flex;gap:10px;flex-wrap:wrap;margin:6px 0 14px}
.helpcard .row a{display:inline-block;background:var(--ink);color:#fff;font:700 14.5px/1 var(--sans);padding:14px 18px;border-radius:999px;text-decoration:none}
.helpcard .row a:hover{background:#000}
.helpcard small{display:block;color:var(--mute);font:500 13px/1.5 var(--sans)}
.dirlist{margin-top:18px;display:grid;gap:10px}
.dirlist a{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--line);border-radius:14px;
  padding:14px 16px;text-decoration:none;background:#fff;font:600 15px/1.35 var(--sans)}
.dirlist a:hover{border-color:var(--ink)}
.dirlist a i{flex:0 0 auto;width:12px;height:12px;border-radius:50%;background:var(--cc)}
.dirlist small{display:block;font:500 13px/1.4 var(--sans);color:var(--mute);margin-top:2px}

/* ---------- inner pages ---------- */
.phead{padding:clamp(40px,6vw,80px) 0 clamp(28px,4vw,48px);border-bottom:1px solid var(--line)}
.phead .cover{margin-bottom:20px}
.phead h1{font-size:clamp(2.3rem,1.3rem + 4vw,4.6rem);line-height:1;letter-spacing:-.045em;max-width:20ch}
.phead .lede{font-size:clamp(1.1rem,1rem + .4vw,1.35rem);color:#34343A;max-width:56ch;margin:18px 0 0}
.pbody{display:grid;grid-template-columns:200px minmax(0,1fr);gap:clamp(24px,5vw,72px);padding:clamp(36px,5vw,64px) 0 clamp(56px,7vw,96px)}
.rail{font:500 12px/1.5 var(--mono);color:var(--mute);letter-spacing:.04em}
.rail .sticky{position:sticky;top:96px;display:grid;gap:10px}
.rail a{text-decoration:none;color:var(--ink)}
.rail a:hover{text-decoration:underline}
.prose{max-width:68ch}
.prose h3{font-size:1.4rem;margin:1.8em 0 .5em}
.prose h3:first-child{margin-top:0}
.prose p{font-size:1.08rem}
.prose a{text-decoration-thickness:1.5px;text-underline-offset:3px}
.pagefig{margin:0 0 30px}

/* post */
.post .cat{display:inline-block;background:var(--ink);color:#fff;font:700 11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  border-radius:999px;padding:7px 12px;text-decoration:none}
.post .meta{font:500 12px var(--mono);color:var(--mute);letter-spacing:.06em;text-transform:uppercase;margin-top:16px}
.post figure{margin:0 0 30px}
.post figure .ph{border-radius:16px;overflow:hidden;background:var(--tint2);aspect-ratio:16/9;position:relative}
.post figure img{width:100%;height:100%;object-fit:cover;filter:grayscale(.25);transition:filter .8s}
.post figure:hover img{filter:none}
.post figcaption{font:500 12px/1.5 var(--mono);color:var(--mute);margin-top:10px}
.post .prose>p:first-of-type::first-letter{font:800 3.4em/.8 var(--sans);float:left;margin:.08em .1em 0 0}
.back{font:800 14px var(--sans);text-decoration:none;border-bottom:2px solid currentColor}
.related{margin-top:48px;border-top:2px solid var(--ink);padding-top:18px}
.related h2{font-size:1.3rem;margin-bottom:6px}
.related li{border-bottom:1px solid var(--line)}
.related a{display:block;padding:12px 0;font:600 15.5px/1.35 var(--sans);text-decoration:none}
.related a:hover{text-decoration:underline}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}
.pn a{border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;font:700 14.5px/1.35 var(--sans)}
.pn a:hover{border-color:var(--ink)}
.pn a span{display:block;font:500 11px var(--mono);color:var(--mute);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}
.pn a.nx{text-align:right;grid-column:2}
.sb{margin:34px 0}

/* library page */
.libtools{position:sticky;top:68px;z-index:5;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);padding:14px 0}
.search{display:flex;gap:10px;align-items:center;margin-bottom:12px}
.search label{font:600 11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute);flex:0 0 auto}
.search input{flex:1;min-width:0;font:500 16px var(--sans);border:1.5px solid var(--line);border-radius:999px;padding:12px 18px;background:#fff;color:var(--ink)}
.search input:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(27,27,31,.15)}
.cats{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.cats button{flex:0 0 auto;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font:700 13px/1 var(--sans);cursor:pointer}
.cats button span{font:500 11px var(--mono);color:var(--mute);margin-left:4px}
.cats button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.cats button[aria-pressed="true"] span{color:#C9C9CF}
.count{font:500 12px var(--mono);color:var(--mute);margin:18px 0 0}
.libcat{margin-top:34px;scroll-margin-top:200px}
.libcat h3{font-size:1.5rem;display:flex;align-items:baseline;gap:10px;border-top:2px solid var(--ink);padding-top:12px;margin-bottom:6px}
.libcat h3 span{font:500 12px var(--mono);color:var(--mute)}
.libg{display:grid;grid-template-columns:repeat(3,1fr);gap:0 24px}
.liba{display:block;padding:14px 0;border-bottom:1px solid var(--line);text-decoration:none}
.liba strong{display:block;font:700 15.5px/1.3 var(--sans);letter-spacing:-.01em}
.liba em{display:block;font-style:normal;font-size:14px;color:var(--mute);margin-top:4px;line-height:1.45}
.liba:hover strong{text-decoration:underline}
.liba[hidden],.libcat[hidden]{display:none}
.empty{font:600 15px var(--sans);padding:30px 0;color:var(--mute)}
.credits{margin-top:40px;font:500 12.5px/1.6 var(--sans);color:var(--mute)}
.credits summary{cursor:pointer;font-weight:700;color:var(--ink)}
.credits ul{margin:10px 0 0 18px;list-style:disc}

/* ---------- footer ---------- */
.foot{border-top:2px solid var(--ink);margin-top:0;padding:48px 0 30px;font:500 14px/1.5 var(--sans);background:#fff}
.fcols{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:28px}
.foot .fm img{width:190px;height:auto}
.foot .fm p{color:var(--mute);margin:12px 0 0;max-width:32ch}
.foot h4{font:600 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mute);margin-bottom:12px}
.foot li{margin:0 0 8px}
.foot li a{text-decoration:none}
.foot li a:hover{text-decoration:underline}
.foot li i{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--cc,var(--ink));margin-right:8px}
.fbase{border-top:1px solid var(--line);margin-top:30px;padding-top:16px;font:500 12.5px/1.8 var(--sans);color:var(--mute)}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .mainnav a{padding:9px 8px;font-size:13.5px}
  .launch-panel{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:960px){
  .navtoggle{display:inline-flex;align-items:center}
  .mainnav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px var(--gut) 16px;margin:0}
  .mainnav.open{display:flex}
  .mainnav a{padding:13px 12px;font-size:16px;border-radius:10px}
  .top-in{position:relative}
  .hero-grid,.method,.libgrid,.support,.netintro{grid-template-columns:1fr}
  .netgrid{grid-template-columns:1fr 1fr}
  .ncard,.ncard:nth-child(4),.ncard:nth-child(5){grid-column:span 1}
  .ncard:nth-child(5){grid-column:1/-1}
  .sechead{grid-template-columns:1fr;gap:16px}
  .pbody{grid-template-columns:1fr}
  .rail .sticky{position:static;display:flex;flex-wrap:wrap;gap:8px 16px}
  .fcols{grid-template-columns:1fr 1fr}
  .libg{grid-template-columns:1fr 1fr}
  .launch-panel{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  body{font-size:17px}
  .brand img{width:132px}
  .launch>summary .lt{display:none}
  .launch>summary{padding:9px 11px}
  .launch-panel{position:fixed;left:16px;right:16px;top:78px;width:auto;grid-template-columns:1fr 1fr}
  .netgrid{grid-template-columns:1fr}
  .ncard:nth-child(5){grid-column:auto}
  .ncard{min-height:0}
  .items{grid-template-columns:1fr}
  .feature{grid-template-columns:1fr}
  .libg{grid-template-columns:1fr}
  .fcols{grid-template-columns:1fr}
  .onode .ol{font-size:0;padding:0;border:0;background:none}
  .onode .ol b{font-size:0}
  .onode[aria-pressed="true"] .ol{background:none}
  .onode .od{width:24px;height:24px}
  .hub span{font-size:8.5px}
  .steps{grid-template-columns:1fr 1fr 1fr}
  .step{padding:12px 10px}
  .step .mono{font-size:10px}
  .matrix td:not(.on),.matrix thead th.c:not(.on){display:none}
  .matrix td.on{box-shadow:none}
  .matrix tbody th{white-space:normal}
  .pn{grid-template-columns:1fr}
  .pn a.nx{grid-column:auto}
  .stopwin .win{inset:2vh 16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
  .fx-duo{clip-path:none}
  .fx-focus img{filter:none;transform:none}
  .stopwin{height:auto}
  .stopwin .stick{position:relative;top:0;height:80vh;min-height:520px}
  .stopwin .win{clip-path:none}
  .stopwin .win video{filter:none;transform:none}
  .stopwin .card{opacity:1;transform:none}
  .stopwin .lead{display:none}
  .fx-para video{transform:scale(1.05)}
}
@media print{
  .top,.helpband,.foot,.libtools,.sb,.related,.pn,.rail{display:none!important}
  .pbody{display:block}
}