:root{
  --paper:#ECEFEA;
  --ink:#18221F;
  --muted:#5B6863;
  --mask:#123F2E;
  --mask-deep:#0C2D21;
  --gold:#CFA544;
  --silk:#F2F4EF;
  --rule:#C9D0CA;
  --display:"Bahnschrift","DIN Alternate","DIN Condensed","Roboto Condensed","Arial Narrow",system-ui,sans-serif;
  --text:Charter,"Bitstream Charter","Sitka Text",Cambria,Georgia,serif;
}
@media (prefers-color-scheme:dark){
  :root{--paper:#121816;--ink:#E3E8E4;--muted:#93A19B;--rule:#2A3531;--mask:#0E3326;--mask-deep:#08221A}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.65 var(--text)}
a{color:inherit;text-decoration-color:var(--gold);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--gold)}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}

/* top bar */
.bar{display:flex;justify-content:space-between;align-items:center;padding:18px 0}
.mark{font:600 22px/1 var(--display);letter-spacing:.02em;text-decoration:none;display:flex;gap:10px;align-items:center}
.mark svg{width:26px;height:26px}
.bar nav a{font:500 16px var(--display);margin-left:22px;text-decoration:none}
.bar nav a[aria-current]{text-decoration:underline;text-decoration-color:var(--gold)}

/* board hero */
.board{position:relative;background:var(--mask);color:var(--silk);overflow:hidden;border-radius:14px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06),inset 0 0 80px rgba(0,0,0,.35)}
.board svg.traces{position:absolute;inset:0;width:100%;height:100%}
.traces path{fill:none;stroke:var(--gold);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;opacity:.85}
.traces .thin{stroke-width:1.6;opacity:.55}
.traces circle{fill:var(--mask-deep);stroke:var(--gold);stroke-width:3}
.traces rect.chip{fill:#1A1F1D;stroke:none}
.traces rect.pin{fill:var(--gold)}
.traces text{fill:var(--silk);font:12px var(--display);opacity:.7}
.board-copy{position:relative;padding:72px 48px 64px;max-width:620px}
.board h1{font:600 clamp(64px,13vw,148px)/.86 var(--display);letter-spacing:-.02em;margin:0 0 22px;
  color:var(--silk);text-shadow:0 1px 0 rgba(0,0,0,.25)}
.board p{font-size:20px;margin:0;max-width:30em;color:#D5DDD7}
.ref{display:inline-block;margin-top:28px;font:14px var(--display);color:#B7C4BD;border:1px solid rgba(242,244,239,.35);
  padding:4px 10px;border-radius:3px}

@media (prefers-reduced-motion:no-preference){
  .traces .draw{stroke-dasharray:var(--len);stroke-dashoffset:var(--len);animation:draw 1.8s cubic-bezier(.6,0,.2,1) forwards}
  .traces .d2{animation-delay:.25s}.traces .d3{animation-delay:.5s}.traces .d4{animation-delay:.75s}
  @keyframes draw{to{stroke-dashoffset:0}}
}

/* sections */
main section{padding:64px 0 8px}
h2{font:600 34px/1.1 var(--display);margin:0 0 6px}
.lede{color:var(--muted);margin:0 0 28px;max-width:36em}
.notes{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.notes li{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--rule)}
.notes time{font:15px/1.8 var(--display);color:var(--muted)}
.notes h3{font:600 22px/1.25 var(--display);margin:0 0 6px}
.notes p{margin:0;color:var(--muted);max-width:40em}

.bench{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:start}
.bench dl{margin:0}
.bench dt{font:600 20px var(--display);margin-top:18px}
.bench dt:first-child{margin-top:0}
.bench dd{margin:2px 0 0;color:var(--muted)}
.uses{background:var(--silk);border:1px solid var(--rule);border-radius:8px;padding:24px 26px}
@media (prefers-color-scheme:dark){.uses{background:#18201D}}
.uses h3{font:600 20px var(--display);margin:0 0 10px}
.uses ol{margin:0;padding-left:22px}
.uses li{margin:6px 0}

footer{margin-top:72px;padding:28px 0 40px;border-top:1px solid var(--rule);color:var(--muted);font-size:15px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* inner pages */
.page{max-width:680px;padding-top:40px}
.page h1{font:600 clamp(44px,8vw,72px)/1 var(--display);margin:0 0 24px}
.page p{margin:0 0 18px}
.page .big{font:600 clamp(96px,22vw,180px)/.9 var(--display);color:var(--gold);margin:0}

@media (max-width:720px){
  body{font-size:17px}
  .wrap{padding:0 16px}
  .board-copy{padding:48px 24px 44px}
  .board p{font-size:18px}
  .notes li{grid-template-columns:1fr;gap:4px}
  .bench{grid-template-columns:1fr;gap:28px}
  .bar nav a{margin-left:14px}
}

/* keep copy readable over traces */
.board::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,var(--mask) 0%,rgba(18,63,46,.75) 45%,rgba(18,63,46,0) 70%)}
.board svg.traces{z-index:0}
.board::before{z-index:1}
.board-copy{z-index:2}
@media (max-width:720px){
  .board svg.traces{opacity:.35}
  .board::before{background:linear-gradient(180deg,rgba(18,63,46,.2),rgba(18,63,46,.55))}
}