/* Nodeform Labs — site styles
   Dark UI, teal accent, Geist + Geist Mono (self-hosted variable fonts). */

@font-face {
  font-family: 'Geist';
  src: url('../fonts/Geist-Variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('../fonts/GeistMono-Variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #08090b;
  --surf: #0e1013;
  --raised: #14171c;
  --bord: #1b1f26;
  --bordv: #282e37;
  --txt: #f2f4f7;
  --sec: #a2abb7;
  --ter: #838d9a;
  --teal: #3fc1ad;
  --teal-dim: rgba(63, 193, 173, 0.07);
  --teal-line: rgba(63, 193, 173, 0.4);
  --sans: 'Geist', 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'Geist Mono', 'IBM Plex Mono', ui-monospace, monospace;
  --r: 16px;
  --navh: 76px;
  --pad: clamp(20px, 4.6vw, 72px);
  color-scheme: dark;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-padding-top: calc(var(--navh) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font: 400 16.5px/1.65 var(--sans);
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--raised);
  color: var(--txt);
  padding: 12px 18px;
  border: 1px solid var(--bordv);
  border-radius: 8px;
}
.skip:focus { left: 16px; top: 16px; }

.w {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------------------------------------------------------- type */
h1, h2, h3 { margin: 0; color: #fff; font-weight: 600; }
h1 {
  font-size: clamp(38px, 5.3vw, 80px);
  line-height: 0.99;
  letter-spacing: -0.042em;
}
h2 {
  font-size: clamp(29px, 3.6vw, 50px);
  line-height: 1.05;
  letter-spacing: -0.036em;
}
h3 {
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: -0.022em;
  font-weight: 500;
}

.lab {
  margin: 0;
  font: 500 11px/1.4 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}
.lab.mut { color: var(--ter); }

.lead {
  font-size: 18.5px;
  line-height: 1.6;
  color: var(--sec);
  max-width: 540px;
  letter-spacing: -0.008em;
}

.eb {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 30px;
  padding: 4px 14px;
  border: 1px solid var(--bordv);
  border-radius: 999px;
  font: 500 11px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sec);
}
.eb i { width: 5px; height: 5px; border-radius: 50%; background: var(--teal); flex: none; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 30px;
  padding: 5px 13px;
  border: 1px solid var(--bordv);
  border-radius: 999px;
  background: var(--surf);
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sec);
}
.pill.ac {
  border-color: var(--teal-line);
  color: var(--teal);
  background: var(--teal-dim);
}

/* ---------------------------------------------------------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border: 1px solid var(--teal);
  border-radius: 999px;
  background: var(--teal);
  color: #04100e;
  font: 500 15px var(--sans);
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn:hover { background: #4fd0bc; border-color: #4fd0bc; }
.btn.sm { min-height: 40px; padding: 8px 18px; font-size: 14px; }
.btn.ghost { background: transparent; color: var(--txt); border-color: var(--bordv); }
.btn.ghost:hover { background: var(--raised); border-color: #39414d; }

/* ---------------------------------------------------------- nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--bord);
  background: rgba(8, 9, 11, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.nav .w {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--navh);
  gap: 20px;
}
.br {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 500;
  font-size: 18px;
  letter-spacing: -0.025em;
  color: var(--txt);
}
.br b { font-weight: 400; color: var(--teal); }
.br svg { flex: none; }

.nl {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14.5px;
  color: var(--sec);
}
.nl a:not(.btn) {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.18s ease, background-color 0.18s ease;
}
.nl a:not(.btn):hover { color: var(--txt); background: var(--raised); }
.nl a.on {
  color: #fff;
  background: var(--raised);
  border-color: var(--bord);
}
.nl .btn { margin-left: 10px; }

.navtoggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--bordv);
  border-radius: 12px;
  background: var(--surf);
  color: var(--txt);
  cursor: pointer;
}
.navtoggle span {
  display: block;
  width: 17px;
  height: 1.5px;
  background: currentColor;
  box-shadow: 0 -5px 0 currentColor, 0 5px 0 currentColor;
}

/* ---------------------------------------------------------- hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 72px;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 112px;
}
.hero h1 { margin-top: 26px; }
.hero .lead { margin: 26px 0 38px; }
.acts { display: flex; gap: 10px; flex-wrap: wrap; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }

/* ---------------------------------------------------------- 3D viewport */
.vp {
  margin: 0;
  border: 1px solid var(--bord);
  border-radius: 18px;
  background: var(--surf);
  overflow: hidden;
}
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 44px;
  padding: 8px 18px;
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ter);
}
.bar.t { border-bottom: 1px solid var(--bord); }
.bar.b { border-top: 1px solid var(--bord); }
.bar span { white-space: nowrap; }

.stage {
  position: relative;
  aspect-ratio: 64 / 52;
  background:
    radial-gradient(58% 58% at 50% 46%, rgba(63, 193, 173, 0.065), rgba(8, 9, 11, 0) 72%),
    var(--bg);
}
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage .fallback {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  font: 400 12px var(--mono);
  color: var(--ter);
}
.stage.nogl .fallback { display: flex; }

.gz { position: absolute; left: 14px; bottom: 12px; opacity: 0.9; pointer-events: none; }

.prog {
  flex: 1;
  height: 2px;
  min-width: 40px;
  background: var(--bord);
  border-radius: 2px;
  overflow: hidden;
}
.prog i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--teal);
  border-radius: 2px;
}

/* ---------------------------------------------------------- sections */
.sec {
  border-top: 1px solid var(--bord);
  padding-top: 104px;
  padding-bottom: 104px;
}
.sh {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 56px;
}
.sh .lead { max-width: 580px; }

.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
}
.col p { color: var(--sec); font-size: 15.5px; }

/* service rows (home) */
.rows { display: flex; flex-direction: column; gap: 12px; }
.row {
  display: grid;
  grid-template-columns: 40px 280px minmax(0, 1fr) auto 28px;
  gap: 36px;
  align-items: center;
  padding: 22px;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.row:hover { border-color: var(--bordv); background: var(--raised); }
.row .th {
  border: 1px solid var(--bord);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg);
}
.row .tx { display: flex; flex-direction: column; gap: 9px; }
.row .tx h3 { font-size: 24px; }
.row .tx p { color: var(--sec); max-width: 480px; font-size: 15.5px; }
.row .ch { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.row .ar {
  font: 400 17px var(--mono);
  color: var(--teal);
  text-align: right;
  transition: transform 0.2s ease;
}
.row:hover .ar { transform: translateX(3px); }

/* ---------------------------------------------------------- scroll stage */
.ss { border-top: 1px solid var(--bord); padding-top: 104px; padding-bottom: 104px; }
.ssin {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 64px;
  align-items: start;
}
.sscol {
  position: sticky;
  /* centred in the viewport where there is room, tucked under the nav where there is not */
  top: max(calc(var(--navh) + 24px), calc((100vh - 560px) / 2));
}
.sscol .stage {
  aspect-ratio: auto;
  height: min(52vh, 440px);
}
.sssteps { display: flex; flex-direction: column; }
.step {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 58vh;
  padding: 28px 0;
  border-top: 1px solid var(--bord);
  opacity: 0.42;
  transition: opacity 0.35s ease;
}
.step:first-child { border-top: 0; }
.step h3 { font-size: 24px; margin-bottom: 10px; }
.step p { color: var(--sec); font-size: 16px; }
.step .num {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.step.on { opacity: 1; }
.sspad { height: 6vh; }

/* ---------------------------------------------------------- deliverables */
.dl {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: 72px;
}
.it {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--bord);
}
.it:first-child { border-top: 1px solid var(--bord); }
.it p { color: var(--sec); margin-top: 7px; font-size: 15.5px; }

/* ---------------------------------------------------------- work cards */
.wk {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 20px;
}
.card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  overflow: hidden;
}
.ph {
  position: relative;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--bord);
  background:
    linear-gradient(to top right, transparent calc(50% - 0.4px), var(--bord) 50%, transparent calc(50% + 0.4px)),
    linear-gradient(to bottom right, transparent calc(50% - 0.4px), var(--bord) 50%, transparent calc(50% + 0.4px)),
    var(--bg);
}
.ph.fill {
  background: var(--bg);
  padding: 18px 20px;
}
.cb { display: flex; flex-direction: column; gap: 14px; flex: 1; padding: 26px; }
.cb h3 { font-size: 22px; }
.cb p { color: var(--sec); font-size: 15.5px; }
.mets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 4px; }
.met { border-top: 1px solid var(--bordv); padding-top: 11px; }
.met b {
  display: block;
  font: 500 21px var(--mono);
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}
.met span {
  display: block;
  min-height: 27px;          /* two lines, so a wrapped label never misaligns a row */
  font: 400 10.5px/1.3 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ter);
}
.soon {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--bord);
}
.soon p { font-size: 14.5px; color: var(--ter); }

/* ---------------------------------------------------------- cta + footer */
.cta {
  border-top: 1px solid var(--bord);
  padding-top: 128px;
  padding-bottom: 128px;
}
.cta .in {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 72px;
  align-items: end;
}
.cta h2 { font-size: clamp(32px, 4.7vw, 66px); margin-top: 20px; }
.cta .rt { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.cta .rt p { font: 400 14px var(--mono); color: var(--sec); }

.ft {
  border-top: 1px solid var(--bord);
  padding-top: 72px;
  padding-bottom: 36px;
}
.ft .g {
  display: grid;
  grid-template-columns: minmax(0, 5fr) repeat(3, minmax(0, 2fr));
  gap: 32px;
}
.ft .g p { color: var(--sec); font-size: 15px; max-width: 300px; margin-top: 18px; }
.ft ul {
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin-top: 18px;
  font-size: 15px;
  color: var(--sec);
}
.ft ul a:hover { color: var(--txt); }
.ft .bt {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 72px;
  padding-top: 26px;
  border-top: 1px solid var(--bord);
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ter);
}

/* ---------------------------------------------------------- tablet */
@media (max-width: 1100px) {
  .row { grid-template-columns: 36px 200px minmax(0, 1fr) 28px; gap: 24px; }
  .row .ch { display: none; }
  .hero { gap: 48px; }
  .dl, .ssin { gap: 48px; }
}

/* ---------------------------------------------------------- mobile */
@media (max-width: 900px) {
  :root { --navh: 64px; }

  body { font-size: 16px; }

  .nl {
    position: fixed;
    inset: var(--navh) 0 auto;
    z-index: 49;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px var(--pad) 22px;
    background: rgba(8, 9, 11, 0.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--bord);
    font-size: 17px;
  }
  .nl.open { display: flex; }
  .nl a:not(.btn) { padding: 13px 14px; border-radius: 12px; }
  .nl .btn { margin: 10px 0 0; }
  .navtoggle { display: flex; }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
    padding-top: 48px;
    padding-bottom: 64px;
  }
  .hero h1 { margin-top: 20px; }
  .hero .lead { margin: 20px 0 28px; font-size: 17px; }
  .acts { gap: 8px; }
  .acts .btn { flex: 1 1 auto; }
  .chips { margin-top: 26px; gap: 6px; }

  .stage { aspect-ratio: 1 / 1; }
  .bar { font-size: 10px; letter-spacing: 0.08em; padding: 8px 14px; }
  .gz { left: 10px; bottom: 8px; transform: scale(0.85); transform-origin: left bottom; }

  .sec, .ss { padding-top: 64px; padding-bottom: 64px; }
  .sh { margin-bottom: 36px; gap: 14px; }
  .lead { font-size: 17px; }

  .cols { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .col { padding: 22px; }

  .row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 16px;
    padding: 18px;
    align-items: center;
  }
  .row .lab { grid-column: 1; }
  .row .ar { grid-column: 2; grid-row: 1; }
  .row .th { grid-column: 1 / -1; width: 100%; }
  .row .tx { grid-column: 1 / -1; }
  .row .tx h3 { font-size: 21px; }

  /* sticky model above the steps */
  .ssin { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .sscol {
    position: sticky;
    top: var(--navh);
    z-index: 1;
    padding: 10px 0 18px;
    background: var(--bg);
  }
  .sscol .stage { aspect-ratio: auto; height: min(40vh, 330px); }
  .sssteps { margin-top: 8px; }
  .step { padding: 22px 0; min-height: 44vh; justify-content: flex-start; }
  .step:last-child { min-height: 26vh; }
  .step h3 { font-size: 21px; }
  .sspad { height: 0; }

  .dl { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .it { grid-template-columns: 32px minmax(0, 1fr); gap: 14px; padding: 20px 0; }

  .wk { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .cb { padding: 22px; }
  .mets { gap: 10px; }
  .met b { font-size: 19px; }

  .cta { padding-top: 72px; padding-bottom: 80px; }
  .cta .in { grid-template-columns: minmax(0, 1fr); gap: 32px; align-items: start; }
  .cta .rt .btn { align-self: stretch; }

  .ft { padding-top: 56px; }
  .ft .g { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; }
  .ft .g > div:first-child { grid-column: 1 / -1; }
  .ft .bt { margin-top: 48px; }
}

@media (max-width: 620px) {
  /* one label per bar, so nothing crowds */
  .bar.t span:first-child { display: none; }
  .bar.t { justify-content: flex-end; }
}

@media (max-width: 420px) {
  .mets { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .met b { font-size: 17px; }
  .met span { font-size: 9.5px; letter-spacing: 0.06em; }
}

/* ---------------------------------------------------------- motion */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .step { opacity: 1; }
  .sscol { position: static; }
}

@media print {
  .nav, .vp, .navtoggle { display: none; }
  body { background: #fff; color: #000; }
}

/* ==========================================================
   Project pages — header, workflow diagram, motion
   ========================================================== */

/* ---------------------------------------------------------- reveal */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.6, 0.2, 1),
              transform 0.7s cubic-bezier(0.2, 0.6, 0.2, 1);
  transition-delay: var(--d, 0s);
}
.js [data-reveal].in { opacity: 1; transform: none; }

/* ---------------------------------------------------------- project header */
.prj {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: 56px;
  padding-bottom: 56px;
}
.prj h1 { margin-top: 20px; font-size: clamp(34px, 4.2vw, 60px); }
.prj .lead { margin-top: 22px; max-width: 620px; }
.prj .meta { display: flex; flex-direction: column; gap: 10px; }
.prj .meta p { font: 400 13px var(--mono); color: var(--ter); }
.prj .meta b { color: var(--txt); font-weight: 400; }
.back {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding-top: 40px;
  font: 400 12px var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ter);
}
.back:hover { color: var(--txt); }
.foot {
  margin-top: 22px;
  font: 400 12px/1.6 var(--mono);
  color: var(--ter);
  max-width: 620px;
}

/* ---------------------------------------------------------- diagram shell */
.dgm {
  border: 1px solid var(--bord);
  border-radius: 18px;
  background: var(--surf);
  overflow: hidden;
}
.dgm .dbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  padding: 8px 18px;
  border-bottom: 1px solid var(--bord);
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ter);
}
.dgm .wrap { position: relative; overflow: hidden; background: var(--bg); }
.board { position: relative; width: 1170px; height: 500px; transform-origin: top left; }
.wires { position: absolute; inset: 0; width: 100%; height: 100%; }

.board .n {
  position: absolute;
  width: 170px;
  height: 106px;
  padding: 12px 14px;
  border: 1px solid var(--bordv);
  border-radius: 12px;
  background: var(--surf);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.board .n .k {
  font: 500 10px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ter);
}
.board .n .t { font-size: 15px; line-height: 1.25; letter-spacing: -0.015em; color: var(--txt); }
.board .n .s { font-size: 12.5px; line-height: 1.35; color: var(--ter); margin-top: auto; }
.board .n.ai { border-color: var(--teal-line); background: rgba(63, 193, 173, 0.06); }
.board .n.ai .k, .board .n.hum .k { color: var(--teal); }
.board .n.hum { border-color: var(--teal-line); }
.board .n.flag { border-style: dashed; border-color: #39414d; }

/* travelling pulse: one dot per lane, looping */
.pulse {
  fill: none;
  stroke: var(--teal);
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-dasharray: 4 96;
  stroke-dashoffset: 0;
  opacity: 0;
}
.dgm.in .pulse { opacity: 0.95; animation: flow 5.4s linear infinite; }
.dgm.in .pulse.p2 { animation-delay: 1.8s; }
.dgm.in .pulse.p3 { animation-delay: 3.6s; opacity: 0.7; }
@keyframes flow { to { stroke-dashoffset: -100; } }

.key {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: center;
  padding: 16px 18px;
  border-top: 1px solid var(--bord);
  background: var(--surf);
  font: 400 11px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ter);
}
.key span { display: inline-flex; align-items: center; gap: 9px; }

/* ---------------------------------------------------------- diagram, stacked */
.tall { display: none; padding: 22px 16px 26px; background: var(--bg); }
.tseq { display: flex; flex-direction: column; }
.tn {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  border: 1px solid var(--bordv);
  border-radius: 12px;
  background: var(--surf);
}
.tn + .tn { margin-top: 30px; }
.tn + .tn::before {
  content: "";
  position: absolute;
  left: 28px;
  top: -30px;
  width: 1px;
  height: 30px;
  background: var(--bordv);
}
.tn .k {
  font: 500 10px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ter);
}
.tn .t { font-size: 16px; line-height: 1.3; letter-spacing: -0.015em; color: var(--txt); }
.tn .s { font-size: 13px; line-height: 1.4; color: var(--ter); }
.tn.ai { border-color: var(--teal-line); background: rgba(63, 193, 173, 0.06); }
.tn.ai .k, .tn.hum .k { color: var(--teal); }
.tn.hum { border-color: var(--teal-line); }
.tn.flag { border-style: dashed; border-color: #39414d; }

.tfork {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 0 6px 10px;
  font: 500 10px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ter);
}
.tfork i { display: block; width: 36px; height: 1px; background: var(--bordv); }
.tlane {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid var(--bord);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.013);
}
.tlane.flag { border-style: dashed; }
.tlab {
  font: 500 10.5px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}
.tlane.flag .tlab { color: var(--ter); }

/* ---------------------------------------------------------- cards that link */
a.card { transition: border-color 0.2s ease, transform 0.2s ease; }
a.card:hover { border-color: var(--bordv); }
a.card:hover .go { color: var(--txt); }
a.card:hover .go i { transform: translateX(4px); }
.go {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font: 400 12px var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--teal);
}
.go i { display: block; transition: transform 0.2s ease; font-style: normal; }
.est { font: 400 12px var(--mono); color: var(--ter); margin-top: 14px; }

/* ---------------------------------------------------------- mobile */
@media (max-width: 900px) {
  .prj {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
    padding-top: 36px;
    padding-bottom: 40px;
    align-items: start;
  }
  .prj h1 { margin-top: 16px; }
  .prj .lead { margin-top: 18px; }
  .back { padding-top: 28px; }
  .dgm .wrap { display: none; }
  .tall { display: block; }
  .dgm .dbar { font-size: 10px; letter-spacing: 0.08em; padding: 8px 14px; }
  .key { font-size: 10px; gap: 14px; padding: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .dgm.in .pulse { animation: none; opacity: 0.55; }
  a.card:hover .go i { transform: none; }
}

/* ---------------------------------------------------------- diagram: corner note */
.dnote {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.dnote p { margin: 0; font-size: 13px; line-height: 1.45; color: var(--ter); }
.dnote .k {
  font: 500 10px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}

/* ---------------------------------------------------------- diagram: the loop, stacked */
.tloop {
  margin-top: 26px;
  padding: 16px;
  border: 1px solid var(--teal-line);
  border-radius: 14px;
  background: rgba(63, 193, 173, 0.05);
}
.tloop .tl { font-size: 14.5px; line-height: 1.45; color: var(--sec); }
.tloop .tgo {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 12px;
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}
.tloop .tgo span { font-size: 15px; line-height: 1; }

/* ==========================================================
   AI Evaluation example pages — prompt, rubric, candidates,
   score table, evidence
   ========================================================== */

.prm {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 22px 24px;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
}
.prm .k {
  padding-top: 3px;
  font: 500 10.5px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}
.prm p { font: 400 15.5px/1.6 var(--mono); color: var(--txt); }
.prm .pn {
  display: block;
  margin-top: 10px;
  font: 400 13px/1.5 var(--sans);
  color: var(--ter);
}

/* ---------------------------------------------------------- rubric */
.rub {
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  overflow: hidden;
}
.rub .rh {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--bord);
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ter);
}
.rub ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rub li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 22px;
  border-top: 1px solid var(--bord);
}
.rub li:nth-child(-n + 2) { border-top: 0; }
.rub li:nth-child(odd) { border-right: 1px solid var(--bord); }
.rub .num { font: 500 12px var(--mono); color: var(--teal); }
.rub h4 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--txt);
}
.rub p { font-size: 14px; line-height: 1.45; color: var(--ter); }
.yours {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 22px;
  border-top: 1px solid var(--bord);
  background: rgba(63, 193, 173, 0.05);
}
.yours p { font-size: 15px; line-height: 1.55; color: var(--sec); max-width: 820px; }
.yours b { color: var(--txt); font-weight: 500; }

/* ---------------------------------------------------------- candidates */
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.clip {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  overflow: hidden;
}
.clip .shot { position: relative; background: var(--bg); line-height: 0; }
.clip .shot img,
.clip .shot video { width: 100%; height: auto; display: block; background: var(--bg); }
.clip .tag { position: absolute; left: 14px; top: 14px; z-index: 2; }
.clip .dur {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 2;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(8, 9, 11, 0.72);
  font: 400 11px var(--mono);
  letter-spacing: 0.08em;
  color: #cfd6db;
}
.clip:has(video) .dur { bottom: auto; top: 14px; }
.clip .cb { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; }
.clip .top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.clip h3 { font-size: 20px; }
.clip .tot {
  font: 500 20px var(--mono);
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}
.clip .tot i { font-style: normal; font-size: 13px; color: var(--ter); }
.clip .say { font-size: 14.5px; line-height: 1.5; color: var(--sec); }

/* ---------------------------------------------------------- score table */
.tbl {
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  overflow: hidden;
}
.trow {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 128px 128px 58px;
  gap: 16px;
  align-items: center;
  padding: 14px 22px;
  border-top: 1px solid var(--bord);
}
.trow.hd {
  border-top: 0;
  padding-top: 16px;
  padding-bottom: 16px;
  font: 400 11px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ter);
}
.trow.gap { background: rgba(63, 193, 173, 0.045); }
.trow .cn { font-size: 15.5px; color: var(--txt); }
.trow .num { font: 500 12px var(--mono); color: var(--ter); }
.meter { display: flex; align-items: center; gap: 10px; }
.seg { display: flex; gap: 3px; }
.seg i { display: block; width: 13px; height: 6px; border-radius: 2px; background: #232a33; }
.seg i.on { background: var(--teal); }
.meter b {
  min-width: 10px;
  font: 500 14px var(--mono);
  color: var(--txt);
  font-variant-numeric: tabular-nums;
}
.dl2 { font: 500 12px var(--mono); color: var(--teal); text-align: right; }
.dl2.z { color: #4b545e; }
.trow.ft { border-top: 1px solid var(--bordv); background: #11151a; }
.trow.ft .cn { font-weight: 500; }
.trow.ft .meter b { font-size: 16px; color: var(--teal); }

/* ---------------------------------------------------------- evidence */
.ev { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.evc {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  overflow: hidden;
}
.evc.wide { grid-column: span 2; }
.evc .shot { position: relative; background: var(--bg); line-height: 0; }
.evc .shot img { width: 100%; height: auto; display: block; }
.evc .two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--bord);
  align-items: start;
}
.evc .cap { display: flex; flex-direction: column; gap: 8px; flex: 1; padding: 18px 20px 20px; }
.evc .cap p { font-size: 14.5px; line-height: 1.5; color: var(--sec); }
.evc .cap .k,
.evn .k {
  font: 500 10.5px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}
.evc .cap .c,
.evn .c {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--bord);
  font: 400 11px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ter);
}
.evn { display: flex; flex-direction: column; gap: 10px; padding: 22px; justify-content: center; flex: 1; }
.evn p { font-size: 14.5px; line-height: 1.5; color: var(--sec); }
.mk { position: absolute; inset: 0; pointer-events: none; }
.mk i {
  position: absolute;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 2px solid var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(8, 9, 11, 0.45), inset 0 0 0 1px rgba(8, 9, 11, 0.3);
}
.stamp {
  position: absolute;
  left: 10px;
  top: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(8, 9, 11, 0.72);
  font: 400 10.5px var(--mono);
  letter-spacing: 0.08em;
  color: #cfd6db;
}

/* ---------------------------------------------------------- what you get */
.out { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.out .o { border-top: 1px solid var(--bordv); padding-top: 18px; display: flex; flex-direction: column; gap: 8px; }
.out .o h4 { margin: 0; font-size: 17px; font-weight: 500; letter-spacing: -0.015em; color: var(--txt); }
.out .o p { font-size: 14.5px; line-height: 1.5; color: var(--ter); }

@media (max-width: 900px) {
  .prm { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .prm p { font-size: 14.5px; }
  .rub ol { grid-template-columns: minmax(0, 1fr); }
  .rub li:nth-child(odd) { border-right: 0; }
  .rub li:nth-child(2) { border-top: 1px solid var(--bord); }
  .yours { flex-direction: column; gap: 12px; }
  .pair, .ev, .out { grid-template-columns: minmax(0, 1fr); }
  .evc.wide { grid-column: auto; }
  .trow { grid-template-columns: 26px minmax(0, 1fr); gap: 8px 10px; padding: 16px; }
  .trow.hd { display: none; }
  .trow .meter { grid-column: 2; position: relative; padding-left: 82px; }
  .trow .meter::before {
    content: attr(data-l);
    position: absolute;
    left: 0;
    font: 400 10px var(--mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ter);
  }
  .dl2 { grid-column: 2; text-align: left; }
  .trow.ft .meter { grid-column: 2; }
}

/* ==================================================================
   Parametric example projects — the live rig and the documents it makes
   ================================================================== */
.rig {
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;      /* never stretch the viewport to the panel column */
}
.rig .view {
  position: relative;
  border: 1px solid var(--bord);
  border-radius: var(--r);
  background: var(--surf);
  overflow: hidden;
  min-width: 0;
}
.rig canvas { display: block; width: 100%; height: auto; pointer-events: none; }
.rig .vbar {
  position: absolute; inset: 0 0 auto; z-index: 3;
  display: flex; justify-content: space-between; gap: 12px;
  padding: 13px 16px;
  font: 400 10.5px var(--mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ter); pointer-events: none;
}
.rig .vfoot {
  position: absolute; inset: auto 0 0; z-index: 3;
  padding: 12px 16px;
  font: 400 11px var(--mono); color: var(--ter); pointer-events: none;
}
.rig .over {
  position: absolute; inset: 0; z-index: 2;
  opacity: 0; pointer-events: none; background: var(--surf);
}
.rig .over svg { width: 100%; height: 100%; display: block; }
.inst { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.inst .panel {
  border: 1px solid var(--bord); border-radius: var(--r);
  background: var(--surf); padding: 18px 20px;
}
.inst .panel > .lab { display: block; margin-bottom: 14px; }

/* read-only parameter display: these move with the animation, they are not controls */
.ctl { display: grid; gap: 9px; padding-block: 9px; }
.ctl .top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.ctl .nm { font-size: 14px; color: var(--sec); }
.ctl .vl {
  font: 500 14px var(--mono); color: var(--txt); font-variant-numeric: tabular-nums;
}
.sl { position: relative; height: 2px; background: var(--bordv); border-radius: 2px; }
.sl i {
  position: absolute; top: 50%; width: 11px; height: 11px;
  margin: -5.5px 0 0 -5.5px; border-radius: 50%;
  background: var(--teal); box-shadow: 0 0 0 4px rgba(63, 193, 173, 0.13);
}
.rdg {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px;
  background: var(--bord); border: 1px solid var(--bord);
  border-radius: 10px; overflow: hidden;
}
.rdg .o { background: var(--surf2, #121519); padding: 13px 15px; min-width: 0; }
.rdg .o b {
  display: block; font: 500 19px var(--mono); letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums; color: var(--teal);
}
.rdg .o span {
  display: block; margin-top: 3px;
  font: 400 9.5px var(--mono); letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--ter);
}
.rdg .o.warn b { color: #e0a85c; }
.rdg .o.bad b { color: #e0695c; }
.sched {
  width: 100%; border-collapse: collapse;
  font: 400 13px var(--mono); font-variant-numeric: tabular-nums;
}
.sched th {
  text-align: left; font-weight: 400; font-size: 9.5px; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ter);
  padding: 0 0 9px; border-bottom: 1px solid var(--bord);
}
.sched td { padding: 8px 0; border-bottom: 1px solid var(--bord); color: var(--sec); }
.sched tr:last-child td { border-bottom: 0; }
.sched td.num { text-align: right; color: var(--txt); }
.sched .mut { color: var(--ter); }
.xscroll { overflow-x: auto; }

/* the calculation sheet */
.cp { padding: 26px 30px; height: 100%; overflow: hidden;
  display: flex; flex-direction: column; gap: 13px; }
.cph {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding-bottom: 11px; border-bottom: 1px solid var(--bord);
}
.cph b { font: 500 13px var(--mono); letter-spacing: 0.03em; color: var(--txt); }
.cph span {
  font: 400 9.5px var(--mono); letter-spacing: 0.11em;
  text-transform: uppercase; color: var(--ter);
}
.cps { display: grid; gap: 4px; }
.cps > p {
  font: 400 9.5px var(--mono); letter-spacing: 0.11em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 2px;
}
.ln {
  display: grid; grid-template-columns: minmax(0, 1fr) auto 112px;
  gap: 14px; align-items: baseline;
  font: 400 12.5px var(--mono); color: var(--sec); font-variant-numeric: tabular-nums;
}
.ln b { font-weight: 400; color: var(--txt); white-space: nowrap; }
.ln .rf {
  font-size: 10px; color: #5b6673; letter-spacing: 0.03em;
  white-space: nowrap; text-align: right;
}
.ln.pass b { color: var(--teal); }
.ln.fail b { color: #e0695c; }
.cpf {
  margin-top: auto; padding-top: 11px; border-top: 1px solid var(--bord);
  font: 400 10px var(--mono); letter-spacing: 0.05em; color: #5b6673;
}

/* the qualifying notes — these are load-bearing, not decoration */
.caveat {
  margin-top: 18px; max-width: 82ch;
  font: 400 12.5px/1.7 var(--mono); color: var(--ter);
  border-left: 2px solid var(--bordv); padding-left: 16px;
}
.caveat b { color: var(--sec); font-weight: 400; }
.caveat + .caveat { margin-top: 11px; }

/* schedules below the rig, where they get the full width */
[data-rig] > .rig + .schedrow { margin-top: 18px; }
.schedrow {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px;
}
.schedrow .panel {
  border: 1px solid var(--bord); border-radius: var(--r);
  background: var(--surf); padding: 18px 20px; min-width: 0;
}
.schedrow .panel > .lab { display: block; margin-bottom: 14px; }

@media (max-width: 900px) {
  .rig { grid-template-columns: minmax(0, 1fr); }
  .schedrow { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .cp { padding: 15px 16px; gap: 8px; }
  .ln { font-size: 10px; gap: 8px; grid-template-columns: minmax(0, 1fr) auto; }
  .ln .rf { display: none; }
  .cph b { font-size: 11px; }
  .rig .vbar { font-size: 9.5px; padding: 11px 13px; }
  .rig .vfoot { font-size: 10px; padding: 10px 13px; }
}