:root {
  --paper: #fdfdfb;
  --paper-dim: #f6f6f2;
  --ink: #16233a;
  --ink-soft: #4a5a72;
  --rule: #c9d0da;
  --rule-soft: #e4e8ee;
  --accent: #e8571c;
  --accent-soft: #fdeee6;
  --blueprint: #2e5e9e;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { background: var(--paper-dim); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
.frame { max-width: 1120px; margin: 0 auto; border-left: 1px solid var(--rule); border-right: 1px solid var(--rule); min-height: 100vh; background: var(--paper); }
.label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); }
a.btn, button.btn {
  display: inline-block; font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 14px 26px; text-decoration: none; cursor: pointer; border: 1px solid var(--ink); color: var(--ink); background: transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
a.btn.primary, button.btn.primary { background: var(--ink); color: var(--paper); }
a.btn.primary:hover, button.btn.primary:hover { background: var(--accent); border-color: var(--accent); }
a.btn:hover { background: var(--ink); color: var(--paper); }
a.btn:focus-visible, a:focus-visible, summary:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Title block header */
header.titleblock { border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 1fr auto auto; position: sticky; top: 0; background: var(--paper); z-index: 10; }
header.titleblock > div { padding: 14px 24px; border-right: 1px solid var(--rule); }
header.titleblock > div:last-of-type { border-right: none; display: flex; align-items: center; }
.wordmark { font-family: var(--mono); font-weight: 700; font-size: 20px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink); text-decoration: none; }
.wordmark span { color: var(--accent); }
.tb-meta { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); line-height: 1.7; }
header a.btn { padding: 10px 18px; font-size: 11px; }
.navrow { grid-column: 1 / -1; border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; align-items: stretch; font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.navrow > a, .navrow summary { padding: 11px 20px; color: var(--ink-soft); text-decoration: none; border-right: 1px solid var(--rule); display: block; cursor: pointer; background: var(--paper); }
.navrow > a:hover, .navrow summary:hover { color: var(--ink); background: var(--paper-dim); }
details.dd { position: relative; }
details.dd summary { list-style: none; }
details.dd summary::-webkit-details-marker { display: none; }
details.dd summary::after { content: " ▾"; color: var(--accent); }
.dd-menu { position: absolute; top: 100%; left: 0; background: var(--paper); border: 1px solid var(--rule); min-width: 260px; z-index: 30; box-shadow: 0 12px 30px rgba(22,35,58,0.12); }
.dd-menu a { display: block; padding: 11px 16px; color: var(--ink-soft); text-decoration: none; border-bottom: 1px solid var(--rule-soft); }
.dd-menu a:last-child { border-bottom: none; }
.dd-menu a:hover { color: var(--ink); background: var(--paper-dim); }

/* Hero */
.hero { padding: 88px 64px 72px; border-bottom: 1px solid var(--rule); position: relative; background-image: linear-gradient(var(--rule-soft) 1px, transparent 1px), linear-gradient(90deg, var(--rule-soft) 1px, transparent 1px); background-size: 48px 48px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero .label { margin-bottom: 24px; display: block; }
.hero h1 { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.06; letter-spacing: -0.02em; font-weight: 700; max-width: 20ch; text-wrap: balance; margin-bottom: 28px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lede { font-size: 19px; color: var(--ink-soft); max-width: 50ch; margin-bottom: 40px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
figure.fig { border: 1px solid var(--rule); background: var(--paper); }
figure.fig img, figure.fig svg { display: block; width: 100%; height: auto; }
figure.fig figcaption { border-top: 1px solid var(--rule); padding: 10px 16px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; color: var(--ink-soft); text-transform: uppercase; }
figure.fig figcaption b { color: var(--accent); font-weight: 400; }

.strip { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--rule); background: var(--paper); }
.strip > div { padding: 20px 24px; border-right: 1px solid var(--rule); font-family: var(--mono); font-size: 12px; color: var(--ink-soft); }
.strip > div:last-child { border-right: none; }
.strip b { display: block; color: var(--ink); font-size: 13px; margin-bottom: 2px; }

section { padding: 76px 64px; border-bottom: 1px solid var(--rule); background: var(--paper); }
section .label { display: block; margin-bottom: 18px; }
section h2 { font-size: clamp(26px, 3.4vw, 38px); line-height: 1.12; letter-spacing: -0.015em; font-weight: 700; max-width: 26ch; text-wrap: balance; margin-bottom: 16px; }
section h1.pageh { font-size: clamp(30px, 4vw, 44px); line-height: 1.1; letter-spacing: -0.015em; font-weight: 700; max-width: 24ch; text-wrap: balance; margin-bottom: 16px; }
section p.sub { color: var(--ink-soft); max-width: 60ch; margin-bottom: 40px; }

/* Problem */
.problem { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.worklist { border: 1px solid var(--rule); font-family: var(--mono); font-size: 12.5px; }
.worklist .wl-head { padding: 10px 16px; border-bottom: 1px solid var(--rule); letter-spacing: 0.12em; color: var(--ink-soft); text-transform: uppercase; font-size: 10.5px; display: flex; justify-content: space-between; }
.worklist ul { list-style: none; }
.worklist li { padding: 9px 16px; border-bottom: 1px solid var(--rule-soft); color: var(--ink-soft); display: flex; justify-content: space-between; gap: 12px; }
.worklist li:last-child { border-bottom: none; }
.worklist li .t { color: var(--ink); }
.worklist li .who { color: var(--accent); letter-spacing: 0.06em; font-size: 10.5px; white-space: nowrap; }
.worklist li .who.team { color: var(--blueprint); }
.problem .prose p { color: var(--ink-soft); margin-bottom: 18px; max-width: 48ch; }
.problem .prose p b { color: var(--ink); }
.problem .punch { font-size: 21px; font-weight: 700; color: var(--ink); max-width: 26ch; line-height: 1.35; }
.problem .punch em { font-style: normal; color: var(--accent); }

/* Pipeline */
.pipeline { border: 1px solid var(--rule); }
.pipeline .row { display: grid; grid-template-columns: 72px 200px 1fr 190px; border-bottom: 1px solid var(--rule); }
.pipeline .row:last-child { border-bottom: none; }
.pipeline .num { font-family: var(--mono); font-size: 13px; padding: 18px 0; text-align: center; border-right: 1px solid var(--rule); color: var(--accent); font-variant-numeric: tabular-nums; }
.pipeline .step { padding: 18px 20px; font-weight: 700; font-size: 15px; border-right: 1px solid var(--rule); }
.pipeline .desc { padding: 18px 20px; color: var(--ink-soft); font-size: 15px; border-right: 1px solid var(--rule); }
.pipeline .out { padding: 18px 16px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; color: var(--ink-soft); text-transform: uppercase; line-height: 1.8; }
.pipeline .out b { color: var(--ink); font-weight: 400; }
.pipeline.p3 .row { grid-template-columns: 72px 220px 1fr; }
.pipeline.p3 .desc { border-right: none; }

/* Output exhibit */
.exhibit { border: 1px solid var(--ink); background: var(--paper); max-width: 860px; }
.exhibit-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 14px 22px; border-bottom: 1px solid var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--ink-soft); }
.exhibit-head b { color: var(--ink); font-weight: 400; }
.exhibit-scroll { overflow-x: auto; }
.exhibit table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
.exhibit th { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); text-align: left; padding: 10px 22px; border-bottom: 1px solid var(--rule); font-weight: 400; }
.exhibit td { padding: 11px 22px; border-bottom: 1px solid var(--rule-soft); font-variant-numeric: tabular-nums; }
.exhibit td:last-child, .exhibit th:last-child { text-align: right; }
.exhibit .src { font-family: var(--mono); font-size: 11px; color: var(--blueprint); }
.exhibit .flag { font-family: var(--mono); font-size: 10.5px; color: var(--accent); }
.exhibit tfoot td { border-top: 1px solid var(--ink); border-bottom: none; font-weight: 700; padding: 14px 22px; }
.exhibit-note { color: var(--ink-soft); padding: 14px 22px; border-top: 1px solid var(--rule); font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; }
.exhibit-note b { color: var(--ink); font-weight: 400; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--rule); }
.split > div { padding: 32px; }
.split > div:first-child { border-right: 1px solid var(--rule); }
.split h3 { font-size: 20px; margin: 12px 0 10px; }
.split .flow { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: 0.04em; margin-bottom: 14px; display: block; }
.split p { color: var(--ink-soft); font-size: 15px; }

.contrast { background: var(--ink); color: var(--paper); }
.contrast .label { color: #94a3bc; }
.contrast h2 { color: var(--paper); }
.contrast p.sub { color: #b6c1d2; }
.contrast .chain { font-family: var(--mono); font-size: 13px; color: #b6c1d2; line-height: 2.1; letter-spacing: 0.05em; }
.contrast .chain b { color: var(--accent); font-weight: 400; }
.contrast .big { font-size: 22px; line-height: 1.4; max-width: 40ch; color: var(--paper); margin-top: 28px; }

/* Industry sheets */
.sheet { border: 1px solid var(--rule); margin-bottom: 28px; display: grid; grid-template-columns: 300px 1fr; }
.sheet:last-child { margin-bottom: 0; }
.sheet .art { border-right: 1px solid var(--rule); background: var(--paper); display: flex; flex-direction: column; }
.sheet .art img { display: block; width: 100%; height: auto; flex: 1; object-fit: contain; }
.sheet .art .figno { border-top: 1px solid var(--rule); padding: 8px 14px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; color: var(--ink-soft); text-transform: uppercase; }
.sheet .art .figno b { color: var(--accent); font-weight: 400; }
.sheet .body { padding: 28px 32px; }
.sheet .body h3 { font-size: 21px; margin-bottom: 4px; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.sheet .body h3 .tag, .tagchip { font-family: var(--mono); font-size: 10px; color: var(--paper); background: var(--accent); letter-spacing: 0.1em; padding: 2px 8px; }
.sheet .body p.blurb { color: var(--ink-soft); font-size: 15px; margin: 8px 0 20px; max-width: 60ch; }
.sheet .body a.btn.open { margin-top: 20px; font-size: 11px; padding: 10px 18px; }
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--rule); }
.io > div { padding: 14px 18px; }
.io > div:first-child { border-right: 1px solid var(--rule); }
.io h4 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 8px; }
.io h4.produces { color: var(--accent); }
.io ul { list-style: none; }
.io li { font-size: 13.5px; color: var(--ink); padding: 3px 0; border-bottom: 1px dashed var(--rule-soft); }
.io li:last-child { border-bottom: none; }
.io.big > div { padding: 20px 24px; }
.io.big li { font-size: 14.5px; padding: 5px 0; }
.notes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.notes span { font-family: var(--mono); font-size: 12px; border: 1px solid var(--rule); padding: 8px 14px; color: var(--ink-soft); background: var(--paper); }
.prose2 { color: var(--ink-soft); max-width: 62ch; margin-bottom: 18px; }
.crosslink { margin-top: 28px; font-size: 14.5px; color: var(--ink-soft); }
.crosslink a { color: var(--blueprint); text-decoration: underline; text-underline-offset: 3px; }
.crosslink a:hover { color: var(--accent); }

/* Works-with wall */
.wall { display: flex; flex-wrap: wrap; gap: 10px; max-width: 760px; }
.wall span { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; border: 1px solid var(--rule); padding: 9px 16px; color: var(--ink-soft); background: var(--paper); }
.wall span.hot { border-color: var(--accent); color: var(--accent); }

/* Controls */
.controls { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.controls > div { background: var(--paper); padding: 22px 24px; }
.controls b { display: block; font-size: 15px; margin-bottom: 4px; }
.controls span { font-size: 14px; color: var(--ink-soft); }
.evidence { border: 1px solid var(--accent); background: var(--accent-soft); padding: 18px 24px; margin-top: 24px; font-size: 15px; color: var(--ink); max-width: 720px; }
.evidence b { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 4px; }

/* FAQ */
.faq { border: 1px solid var(--rule); max-width: 860px; }
.faq details { border-bottom: 1px solid var(--rule); }
.faq details:last-child { border-bottom: none; }
.faq summary { list-style: none; cursor: pointer; padding: 18px 22px; font-weight: 700; font-size: 15.5px; display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--accent); font-size: 16px; }
.faq details[open] summary::after { content: "−"; }
.faq .a { padding: 0 22px 20px; color: var(--ink-soft); font-size: 15px; max-width: 68ch; }

/* CTA */
.cta h2 { max-width: 26ch; }
.cta .kicker { font-family: var(--mono); font-size: 13px; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 32px; display: block; }
.nudges { list-style: none; max-width: 62ch; margin-bottom: 36px; }
.nudges li { position: relative; padding-left: 28px; margin-bottom: 14px; color: var(--ink-soft); font-size: 15.5px; }
.nudges li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }
.nudges b { color: var(--ink); }

/* Send form */
.send-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; align-items: start; }
.send-grid .nudges { margin-bottom: 30px; }
@media (max-width: 900px) { .send-grid { grid-template-columns: 1fr; gap: 8px; } }
.formsheet { border: 1px solid var(--ink); background: var(--paper); max-width: 760px; padding: 32px; }
.formsheet label, .formsheet legend { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); display: block; }
.formsheet input[type="text"], .formsheet input[type="email"], .formsheet input[type="date"], .formsheet select, .formsheet textarea {
  display: block; width: 100%; margin-top: 7px; padding: 12px 14px; border: 1px solid var(--rule); background: var(--paper);
  font-family: var(--sans); font-size: 15px; color: var(--ink); border-radius: 0;
}
.formsheet input:focus, .formsheet select:focus, .formsheet textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.fgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 22px; }
.formsheet .full { margin-bottom: 22px; }
.formsheet input[type="file"] { margin-top: 7px; font-family: var(--mono); font-size: 12px; color: var(--ink-soft); width: 100%; }
.hint { display: block; margin-top: 8px; font-family: var(--sans); font-size: 13px; letter-spacing: 0; text-transform: none; color: var(--ink-soft); }
.formsheet button.btn { background: var(--ink); color: var(--paper); }
.formsheet button.btn:hover { background: var(--accent); border-color: var(--accent); }
.formfoot { margin-top: 16px; }
.sentbox { border: 1px solid var(--accent); background: var(--accent-soft); padding: 28px 30px; max-width: 760px; }
.sentbox b { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; color: var(--accent); display: block; margin-bottom: 10px; }
.sentbox p { color: var(--ink); font-size: 16px; max-width: 56ch; margin-bottom: 20px; }

/* Resource pages */
.resview h3 { font-size: 20px; margin: 40px 0 12px; }
.resview p { color: var(--ink-soft); max-width: 66ch; margin-bottom: 16px; }
.resview p b { color: var(--ink); }
.resview ol { max-width: 62ch; margin: 0 0 16px 22px; color: var(--ink-soft); }
.resview ol li { margin-bottom: 12px; padding-left: 6px; }
.resview ol li b { color: var(--ink); }
.doc-scroll { overflow-x: auto; border: 1px solid var(--ink); margin: 20px 0; }
.doc-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 700px; background: var(--paper); }
.doc-table th { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--ink); font-weight: 400; background: var(--paper-dim); }
.doc-table td { padding: 10px 14px; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
.doc-table td.mono { font-family: var(--mono); font-size: 11.5px; color: var(--blueprint); white-space: nowrap; }
.gate { display: flex; gap: 10px; flex-wrap: wrap; align-items: stretch; margin: 24px 0 8px; }
.gate input[type="email"] { padding: 13px 16px; border: 1px solid var(--rule); font-family: var(--sans); font-size: 15px; color: var(--ink); background: var(--paper); min-width: 260px; border-radius: 0; }
.gate input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.gate button { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; padding: 13px 22px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); cursor: pointer; }
.gate button:hover { background: var(--accent); border-color: var(--accent); }
.gated-ok { display: none; font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; color: var(--accent); margin: 24px 0 8px; }
.res-cta { border: 1px solid var(--accent); background: var(--accent-soft); padding: 24px 28px; margin-top: 44px; max-width: 720px; }
.res-cta b { display: block; font-size: 16px; margin-bottom: 6px; color: var(--ink); }
.res-cta p { margin-bottom: 18px; font-size: 15px; }

footer { padding: 28px 64px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-family: var(--mono); font-size: 11px; color: var(--ink-soft); letter-spacing: 0.08em; background: var(--paper); }
footer a { color: var(--ink-soft); text-decoration: none; }
footer a:hover { color: var(--ink); }
.footlinks { display: flex; gap: 18px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 56px 28px; }
  section { padding-left: 28px; padding-right: 28px; }
  footer { padding-left: 28px; padding-right: 28px; }
  .strip { grid-template-columns: 1fr 1fr; }
  .strip > div:nth-child(2n) { border-right: none; }
  .strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .problem { grid-template-columns: 1fr; }
  .pipeline .row { grid-template-columns: 52px 1fr; }
  .pipeline .desc { grid-column: 2; border-top: 1px dashed var(--rule-soft); border-right: none; }
  .pipeline .out { grid-column: 1 / -1; border-top: 1px dashed var(--rule-soft); }
  .pipeline .step { border-right: none; }
  .pipeline.p3 .row { grid-template-columns: 52px 1fr; }
  .pipeline.p3 .desc { grid-column: 2; }
  .split { grid-template-columns: 1fr; }
  .split > div:first-child { border-right: none; border-bottom: 1px solid var(--rule); }
  .sheet { grid-template-columns: 1fr; }
  .sheet .art { border-right: none; border-bottom: 1px solid var(--rule); }
  .io { grid-template-columns: 1fr; }
  .io > div:first-child { border-right: none; border-bottom: 1px solid var(--rule); }
  .controls { grid-template-columns: 1fr; }
  header.titleblock { grid-template-columns: 1fr auto; position: static; }
  header.titleblock > div.hide-m { display: none; }
  .fgrid { grid-template-columns: 1fr; }
  .formsheet { padding: 22px; }
}