:root {
  color-scheme: light;

  --lab-bg: #ffffff;
  --lab-bg-soft: #f2f6fb;
  --lab-panel: #f7fafd;
  --lab-panel-raised: #ffffff;
  --lab-ink: #0f1a2b;
  --lab-ink-soft: #45566e;
  --lab-ink-faint: #61728c;
  --lab-signal: #2c6cb4;
  --lab-signal-dark: #1f4e86;
  --lab-on-signal: #ffffff;
  --lab-steel: #2f7391;
  --lab-flag: #a33a28;
  --lab-rule: #d6e0ec;
  --lab-rule-strong: #aec0d4;
  --lab-display: "Fraunces", Georgia, serif;
  --lab-read: "Newsreader", Georgia, serif;
  --lab-mono: "Spline Sans Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.lab-page {
  margin: 0;
  background: var(--lab-bg);
  color: var(--lab-ink);
  font: 1rem/1.55 var(--lab-read);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.lab-page :where(a) { color: inherit; }
.lab-page ::selection { background: var(--lab-signal); color: var(--lab-bg); }

.lab-nav {
  width: min(1240px, calc(100% - 48px));
  height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--lab-rule);
}

.lab-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font: 600 1.05rem/1 var(--lab-mono);
  letter-spacing: -0.03em;
}

.lab-brand-mark {
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lab-signal);
  border-radius: 50%;
  color: var(--lab-signal);
  font-size: 0.72rem;
}

.lab-brand small {
  margin-left: 5px;
  padding-left: 15px;
  border-left: 1px solid var(--lab-rule-strong);
  color: var(--lab-ink-faint);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lab-nav-links { display: flex; align-items: center; gap: 28px; }

.lab-nav-links a {
  color: var(--lab-ink-soft);
  font: 500 0.68rem/1 var(--lab-mono);
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.lab-nav-links a:hover { color: var(--lab-ink); }

.lab-nav-links .lab-nav-cta {
  padding: 11px 15px;
  border: 1px solid var(--lab-rule-strong);
  color: var(--lab-ink);
}

.lab-nav-links .lab-nav-cta:hover { border-color: var(--lab-signal); color: var(--lab-signal); }

.lab-hero {
  position: relative;
  width: min(1240px, calc(100% - 48px));
  min-height: 670px;
  margin: 0 auto;
  padding: 86px 0 96px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  gap: clamp(56px, 7vw, 112px);
  align-items: center;
}

.lab-hero::before {
  position: absolute;
  z-index: -1;
  top: 22px;
  right: -4vw;
  width: 58%;
  height: 82%;
  content: "";
  opacity: 0.32;
  background-image:
    linear-gradient(var(--lab-rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--lab-rule) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom left, black, transparent 76%);
}

.lab-eyebrow,
.lab-index {
  margin: 0 0 22px;
  color: var(--lab-signal);
  font: 500 0.66rem/1.4 var(--lab-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lab-eyebrow { display: flex; align-items: center; gap: 10px; }
.lab-eyebrow span { width: 23px; height: 1px; background: var(--lab-signal); }

.lab-hero h1,
.lab-section h2,
.lab-engagement h2 {
  margin: 0;
  font-family: var(--lab-display);
  font-weight: 520;
  letter-spacing: -0.035em;
}

.lab-hero h1 {
  max-width: 720px;
  font-size: clamp(3.25rem, 6.5vw, 6.4rem);
  line-height: 0.93;
}

.lab-hero h1 em,
.lab-section h2 em { color: var(--lab-signal); font-weight: 470; }

.lab-lede {
  max-width: 620px;
  margin: 31px 0 0;
  color: var(--lab-ink-soft);
  font-size: clamp(1.15rem, 2vw, 1.38rem);
  line-height: 1.58;
}

.lab-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.lab-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid transparent;
  font: 600 0.72rem/1 var(--lab-mono);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: 140ms ease;
}

.lab-button-primary { background: var(--lab-signal); color: var(--lab-on-signal); }
.lab-button-primary:hover { background: var(--lab-signal-dark); transform: translateY(-2px); }
.lab-button-quiet { border-color: var(--lab-rule-strong); color: var(--lab-ink-soft); }
.lab-button-quiet:hover { border-color: var(--lab-ink-soft); color: var(--lab-ink); }
.lab-button-quiet span, .lab-button-light span { margin-left: 14px; }

.lab-proofline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 34px 0 0;
  padding: 0;
  color: var(--lab-ink-faint);
  font: 400 0.65rem/1.4 var(--lab-mono);
  list-style: none;
  text-transform: uppercase;
}

.lab-proofline li::before { margin-right: 8px; color: var(--lab-steel); content: "◇"; }

.case-window {
  position: relative;
  margin: 0;
  border: 1px solid var(--lab-rule-strong);
  background: color-mix(in srgb, var(--lab-panel) 95%, transparent);
  box-shadow: 0 18px 44px rgba(15, 26, 43, 0.1);
}

.case-window::before {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 20px;
  height: 20px;
  border-top: 1px solid var(--lab-signal);
  border-right: 1px solid var(--lab-signal);
  content: "";
}

.case-window figcaption,
.case-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  color: var(--lab-ink-faint);
  font: 500 0.56rem/1 var(--lab-mono);
  letter-spacing: 0.11em;
}

.case-window figcaption { border-bottom: 1px solid var(--lab-rule); }
.case-status { color: var(--lab-flag); }
.case-status::before { content: "●"; margin-right: 7px; font-size: 0.52rem; }

.case-claim { padding: 27px 24px 25px; }
.case-claim span, .company-test > span {
  display: block;
  margin-bottom: 8px;
  color: var(--lab-ink-faint);
  font: 500 0.57rem/1 var(--lab-mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.case-claim strong { font: 500 1.28rem/1.3 var(--lab-display); }

.case-trace {
  display: grid;
  grid-template-columns: 1fr 22px 1fr 22px 1fr;
  align-items: center;
  padding: 0 24px 26px;
}

.case-trace div { min-height: 92px; padding: 12px; border: 1px solid var(--lab-rule); background: var(--lab-bg-soft); }
.case-trace div > span { display: block; color: var(--lab-signal); font: 500 0.58rem/1 var(--lab-mono); }
.case-trace b { display: block; margin-top: 10px; font: 500 0.82rem/1.2 var(--lab-mono); }
.case-trace small { display: block; margin-top: 7px; color: var(--lab-ink-faint); font: 400 0.55rem/1.45 var(--lab-mono); }
.case-trace i { height: 1px; background: var(--lab-rule-strong); }
.case-trace i::after { float: right; margin-top: -5px; color: var(--lab-rule-strong); content: ">"; font: 9px/1 var(--lab-mono); }

.case-observation {
  display: flex;
  gap: 12px;
  margin: 0 24px 25px;
  padding: 15px;
  border-left: 2px solid var(--lab-steel);
  background: rgba(44, 108, 180, 0.05);
}

.case-pulse { width: 7px; height: 7px; margin-top: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--lab-steel); box-shadow: 0 0 0 4px rgba(47, 115, 145, 0.16); }
.case-observation p { margin: 0; color: var(--lab-ink-soft); font-size: 0.87rem; }
.case-observation small { display: block; margin-bottom: 4px; color: var(--lab-steel); font: 500 0.55rem/1 var(--lab-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.case-footer { border-top: 1px solid var(--lab-rule); }

.lab-stage {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto 0;
  padding: 22px 0;
  border-top: 1px solid var(--lab-rule-strong);
  border-bottom: 1px solid var(--lab-rule-strong);
}

.lab-stage strong { color: var(--lab-flag); font: 600 0.64rem/1.5 var(--lab-mono); letter-spacing: 0.13em; text-transform: uppercase; }
.lab-stage p { margin: 0; color: var(--lab-ink-faint); font: 400 0.72rem/1.65 var(--lab-mono); }
.lab-stage p span { color: var(--lab-ink-soft); }

.lab-section { width: min(1240px, calc(100% - 48px)); margin: 0 auto; padding: 130px 0; }
.lab-section-heading { max-width: 930px; margin-bottom: 65px; }
.lab-section-heading h2, .lab-boundary h2 { font-size: clamp(2.4rem, 5vw, 4.65rem); line-height: 1.02; }
.lab-section-heading-split { max-width: none; display: grid; grid-template-columns: 1.5fr 0.5fr; gap: 70px; align-items: end; }
.lab-section-note { margin: 0; color: var(--lab-ink-faint); font: 400 0.69rem/1.65 var(--lab-mono); }

.lab-problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--lab-rule-strong); border-bottom: 1px solid var(--lab-rule-strong); }
.lab-problem-grid article { min-height: 260px; padding: 24px 26px 30px; border-right: 1px solid var(--lab-rule); }
.lab-problem-grid article:last-child { border-right: 0; }
.lab-article-no { color: var(--lab-signal); font: 500 0.67rem/1 var(--lab-mono); }
.lab-problem-grid h3 { margin: 74px 0 13px; font: 520 1.35rem/1.15 var(--lab-display); }
.lab-problem-grid p { margin: 0; color: var(--lab-ink-soft); font-size: 1rem; }

.lab-complements { border-top: 1px solid var(--lab-rule); }
.company-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.company-card { position: relative; min-height: 430px; padding: 28px; overflow: hidden; border: 1px solid var(--lab-rule); background: var(--lab-panel); }
.company-card::after { position: absolute; right: -35px; bottom: -52px; color: rgba(44, 108, 180, 0.05); content: attr(data-index); font: 600 12rem/1 var(--lab-mono); }
.company-card header { display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 8px 16px; padding-bottom: 23px; border-bottom: 1px solid var(--lab-rule); }
.company-card header > span { color: var(--lab-signal); font: 500 0.68rem/1 var(--lab-mono); }
.company-card h3 { margin: 0; max-width: 20ch; font: 530 clamp(1.35rem, 2.1vw, 1.75rem)/1.12 var(--lab-display); }
.company-card header small { color: var(--lab-ink-faint); font: 500 0.53rem/1 var(--lab-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.company-surface { min-height: 40px; margin: 20px 0 34px; color: var(--lab-steel); font: 400 0.65rem/1.55 var(--lab-mono); text-transform: uppercase; }
.company-test { position: relative; z-index: 1; }
.company-test strong { display: block; font: 520 1.42rem/1.25 var(--lab-display); }
.company-test p { max-width: 36rem; margin: 12px 0 0; color: var(--lab-ink-soft); }
.company-boundary { position: relative; z-index: 1; margin: 30px 0 0; padding-top: 18px; border-top: 1px dashed var(--lab-rule-strong); color: var(--lab-ink-faint); font: 400 0.67rem/1.55 var(--lab-mono); }
.company-boundary b { color: var(--lab-flag); font-weight: 500; }

.lab-boundary { display: grid; grid-template-columns: 0.84fr 1.16fr; gap: clamp(60px, 8vw, 130px); align-items: center; border-top: 1px solid var(--lab-rule); }
.boundary-copy > p:last-child { max-width: 520px; margin-top: 25px; color: var(--lab-ink-soft); font-size: 1.12rem; }
.boundary-ledger { border-top: 1px solid var(--lab-rule-strong); }
.boundary-ledger > div { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--lab-rule); }
.boundary-ledger span { padding: 14px 16px; color: var(--lab-ink-soft); font: 400 0.66rem/1.35 var(--lab-mono); }
.boundary-ledger span + span { border-left: 1px solid var(--lab-rule); color: var(--lab-ink-faint); }
.boundary-ledger .ledger-head span { color: var(--lab-signal); font-size: 0.55rem; font-weight: 600; letter-spacing: 0.12em; }
.boundary-ledger .ledger-head span + span { color: var(--lab-flag); }

.lab-engagement {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 80px;
  width: min(1360px, calc(100% - 32px));
  margin: 0 auto 16px;
  padding: clamp(58px, 8vw, 100px);
  background: var(--lab-signal-dark);
  color: var(--lab-on-signal);
}

.lab-engagement .lab-index { color: #b9d2ee; }
.lab-engagement h2 { max-width: 720px; font-size: clamp(2.7rem, 5.4vw, 5.25rem); line-height: 0.98; }
.engagement-copy { align-self: end; }
.engagement-copy p { margin: 0 0 30px; color: #d8e6f6; font-size: 1.13rem; }
.lab-button-light { background: var(--lab-bg); color: var(--lab-ink); }
.lab-button-light:hover { background: #e8f0fa; transform: translateY(-2px); }

.lab-footer {
  width: min(1240px, calc(100% - 48px));
  min-height: 210px;
  margin: 0 auto;
  padding: 55px 0;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 60px;
  align-items: start;
  color: var(--lab-ink-faint);
}
.lab-brand-footer { color: var(--lab-ink); }
.lab-footer > div > p { margin: 17px 0 0; font-size: 0.92rem; }
.lab-footer nav { display: grid; gap: 9px; }
.lab-footer nav a { font: 400 0.65rem/1.5 var(--lab-mono); text-decoration: none; }
.lab-footer nav a:hover { color: var(--lab-signal); }
.lab-footer > p { margin: 0; font: 400 0.6rem/1.5 var(--lab-mono); }

@media (max-width: 980px) {
  .lab-nav-links > a:not(.lab-nav-cta) { display: none; }
  .lab-hero { min-height: 0; grid-template-columns: 1fr; padding-top: 65px; }
  .lab-hero-copy { max-width: 760px; }
  .case-window { max-width: 680px; }
  .lab-problem-grid { grid-template-columns: repeat(2, 1fr); }
  .lab-problem-grid article:nth-child(2) { border-right: 0; }
  .lab-problem-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--lab-rule); }
  .lab-section-heading-split, .lab-boundary { grid-template-columns: 1fr; }
  .lab-section-note { max-width: 620px; }
  .lab-engagement { grid-template-columns: 1fr; gap: 45px; }
}

@media (max-width: 700px) {
  .lab-nav, .lab-hero, .lab-stage, .lab-section, .lab-footer { width: min(100% - 32px, 1240px); }
  .lab-nav { height: 68px; }
  .lab-brand small { display: none; }
  .lab-nav-links { gap: 0; }
  .lab-nav-links .lab-nav-cta { padding: 10px 11px; font-size: 0.58rem; }
  .lab-hero { padding: 58px 0 72px; }
  .lab-hero h1 { font-size: clamp(3rem, 15vw, 4.7rem); }
  .lab-lede { font-size: 1.08rem; }
  .lab-button { width: 100%; }
  .lab-proofline { display: grid; }
  .case-trace { display: grid; grid-template-columns: 1fr; gap: 8px; }
  .case-trace i { width: 1px; height: 8px; margin-left: 50%; }
  .case-trace i::after { display: none; }
  .case-footer { align-items: flex-start; gap: 10px; flex-direction: column; }
  .lab-stage { grid-template-columns: 1fr; gap: 8px; }
  .lab-section { padding: 92px 0; }
  .lab-section-heading { margin-bottom: 44px; }
  .lab-section-heading h2, .lab-boundary h2 { font-size: 2.45rem; }
  .lab-problem-grid, .company-grid { grid-template-columns: 1fr; }
  .lab-problem-grid article { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--lab-rule); }
  .lab-problem-grid article:last-child { border-bottom: 0; }
  .lab-problem-grid h3 { margin-top: 52px; }
  .company-card { min-height: 0; padding: 23px; }
  .company-card header { grid-template-columns: 1fr; }
  .company-card header small { display: none; }
  .company-surface { min-height: 0; }
  .boundary-ledger span { padding: 12px 8px; font-size: 0.58rem; }
  .lab-engagement { width: calc(100% - 16px); margin-bottom: 8px; padding: 55px 24px; }
  .lab-footer { grid-template-columns: 1fr; gap: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .lab-button { transition: none; }
}