:root {
  color-scheme: dark;
  --color-background: #03111d;
  --color-surface: #041827;
  --color-surface-raised: #061d32;
  --color-surface-active: #082740;
  --color-foreground: #f4f8fb;
  --color-text: #d8e5ed;
  --color-muted: #91a8b8;
  --color-accent: #56cddd;
  --color-accent-strong: #2aadd1;
  --color-blue: #478dcd;
  --color-border: rgba(157, 196, 216, .18);
  --color-border-strong: rgba(157, 196, 216, .32);
  --navy-1000: #03111d;
  --navy-950: #041827;
  --navy-900: #061d32;
  --navy-850: #082740;
  --navy-800: #0b3451;
  --cyan: #56cddd;
  --cyan-strong: #2aadd1;
  --blue: #478dcd;
  --white: #f4f8fb;
  --text: #d8e5ed;
  --muted: #91a8b8;
  --quiet: #8ba4b5;
  --line: rgba(157, 196, 216, .18);
  --line-strong: rgba(157, 196, 216, .32);
  --radius: 6px;
  --max: 1240px;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --header-offset: 92px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-offset); }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background: var(--navy-1000);
  font-family: "Avenir Next", "Plus Jakarta Sans", "Segoe UI Variable", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
::selection { color: var(--navy-1000); background: var(--cyan); }
a { color: inherit; }
img { max-width: 100%; }
h1, h2, h3, p { overflow-wrap: break-word; }
button, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button, .button, summary { cursor: pointer; }
section[id] { scroll-margin-top: var(--header-offset); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--navy-1000);
  background: var(--cyan);
  transform: translateY(-160%);
  transition: transform 160ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }
.top-sentinel { position: absolute; inset: 0 0 auto; height: 1px; pointer-events: none; }

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  min-height: 76px;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid transparent;
  background: rgba(3, 17, 29, .18);
  transition: background-color 220ms var(--ease-out), border-color 220ms var(--ease-out), backdrop-filter 220ms var(--ease-out);
}
.site-header.scrolled {
  border-color: var(--line);
  background: rgba(3, 17, 29, .9);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { display: block; width: 222px; height: auto; }
.main-nav { display: flex; align-items: center; gap: 25px; }
.main-nav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: #bed0dc;
  font-size: .875rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 160ms ease;
}
.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  inset: auto 100% 5px 0;
  height: 1px;
  background: var(--cyan);
  transition: right 180ms var(--ease-out);
}
.main-nav .nav-cta {
  min-height: 44px;
  padding: 0 16px;
  color: var(--navy-1000);
  border-radius: var(--radius);
  background: var(--cyan);
  transition: transform 140ms var(--ease-out), background-color 160ms ease;
}
.menu-button {
  display: none;
  width: 48px;
  height: 48px;
  padding: 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--navy-900);
  cursor: pointer;
}
.menu-button > span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: var(--white);
  transition: transform 180ms var(--ease-out), opacity 120ms ease;
}
.menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.hero {
  position: relative;
  min-height: 100dvh;
  padding: 132px max(28px, calc((100vw - var(--max)) / 2)) 76px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, .92fr);
  align-items: center;
  gap: clamp(54px, 7vw, 110px);
  overflow: hidden;
}
.hero-copy { position: relative; z-index: 1; }
h1 {
  max-width: 780px;
  margin: 0;
  color: var(--white);
  font-size: clamp(3.25rem, 6.2vw, 5.9rem);
  font-weight: 650;
  line-height: .98;
  letter-spacing: -.045em;
  text-wrap: balance;
  animation: hero-enter 700ms 140ms var(--ease-out) both;
}
.hero-lede {
  max-width: 640px;
  margin: 30px 0 0;
  color: #aec1ce;
  font-size: 1.08rem;
  line-height: 1.72;
  animation: hero-enter 700ms 210ms var(--ease-out) both;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
  animation: hero-enter 700ms 280ms var(--ease-out) both;
}
.button {
  min-height: 52px;
  padding: 12px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform 140ms var(--ease-out), background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}
.button:active, .main-nav .nav-cta:active { transform: scale(.97); }
.button-primary { color: var(--navy-1000); background: var(--cyan); }
.button-secondary { color: var(--text); border-color: var(--line-strong); background: transparent; }
.hero-detail {
  margin: 22px 0 0;
  color: var(--quiet);
  font-size: .8rem;
  animation: hero-enter 700ms 340ms var(--ease-out) both;
}

.operations-model {
  position: relative;
  min-height: 470px;
  padding: 50px 42px 38px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--navy-950);
  animation: model-enter 800ms 220ms var(--ease-out) both;
}
.brand-blocks {
  position: relative;
  width: 136px;
  height: 116px;
  margin-left: auto;
}
.brand-blocks span {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 3px;
  transform: translateY(20px);
  opacity: 0;
  animation: block-in 520ms var(--ease-out) forwards;
}
.brand-blocks span:nth-child(1) { left: 0; bottom: 0; background: var(--blue); animation-delay: 420ms; }
.brand-blocks span:nth-child(2) { left: 42px; bottom: 34px; background: var(--cyan-strong); animation-delay: 490ms; }
.brand-blocks span:nth-child(3) { left: 84px; bottom: 68px; background: var(--cyan); animation-delay: 560ms; }
.model-title {
  max-width: 330px;
  margin: 8px 0 30px;
  color: var(--white);
  font-size: 1.55rem;
  font-weight: 650;
  line-height: 1.2;
}
.model-kicker {
  margin: 26px 0 0;
  color: var(--cyan);
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .035em;
}
.model-flow { display: grid; gap: 18px; }
.model-flow > div {
  position: relative;
  min-height: 0;
  padding: 0 0 0 18px;
  display: grid;
  grid-template-columns: 118px 1fr;
  align-items: center;
  gap: 20px;
}
.model-flow > div::before {
  content: "";
  position: absolute;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--cyan);
}
.model-flow strong { color: var(--white); font-size: .94rem; }
.model-flow span { color: var(--muted); font-size: .875rem; }

.principles {
  max-width: var(--max);
  margin: 28px auto 0;
  padding: 25px 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  border-radius: var(--radius);
  background: var(--navy-900);
}
.principles p {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: .875rem;
  line-height: 1.35;
}
.principles p::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 2px;
  background: var(--cyan);
}
.principles strong { color: var(--white); font-weight: 650; }

.section {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 128px 28px;
}
h2 {
  margin: 0;
  color: var(--white);
  font-size: clamp(2.55rem, 5vw, 4.9rem);
  font-weight: 620;
  line-height: 1.04;
  letter-spacing: -.04em;
  text-wrap: balance;
}

.problem {
  min-height: 570px;
  display: grid;
  grid-template-columns: 1.18fr .82fr;
  align-items: end;
  gap: clamp(48px, 8vw, 120px);
}
.problem-body { max-width: 540px; }
.problem-body p { margin: 0; color: var(--muted); font-size: 1.03rem; }
.problem-body p + p { margin-top: 24px; color: var(--text); }

.services {
  max-width: none;
  padding-left: max(28px, calc((100vw - var(--max)) / 2));
  padding-right: max(28px, calc((100vw - var(--max)) / 2));
  background: var(--navy-950);
}
.section-intro {
  max-width: var(--max);
  display: grid;
  grid-template-columns: 1.2fr .65fr;
  align-items: end;
  gap: 70px;
}
.section-intro p { margin: 0; color: var(--muted); }
.primary-service {
  max-width: var(--max);
  margin-top: 64px;
  padding: 42px;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 70px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--navy-850);
}
.service-type { margin: 0 0 12px; color: var(--cyan); font-size: .875rem; font-weight: 700; }
.primary-service h3 {
  margin: 0;
  color: var(--white);
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 620;
  line-height: 1.04;
  letter-spacing: -.035em;
}
.primary-service > div > p:last-child { max-width: 670px; margin: 22px 0 0; color: var(--muted); }
.primary-service ul {
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: end;
  gap: 1px;
  list-style: none;
  background: var(--line);
}
.primary-service li { padding: 18px; color: var(--text); background: var(--navy-850); font-size: .875rem; }
.service-list { max-width: var(--max); margin-top: 18px; border-top: 1px solid var(--line-strong); }
.service-row {
  min-height: 134px;
  padding: 24px 4px;
  display: grid;
  grid-template-columns: minmax(220px, .8fr) minmax(280px, 1.2fr) 130px;
  align-items: center;
  gap: 40px;
  border-bottom: 1px solid var(--line);
  transition: background-color 180ms ease;
}
.service-row h3 { margin: 0; color: var(--white); font-size: 1.25rem; font-weight: 620; }
.service-row p { max-width: 600px; margin: 0; color: var(--muted); font-size: .9rem; }
.service-row > span { justify-self: end; color: var(--cyan); font-size: .875rem; font-weight: 700; }

.method { padding-top: 150px; padding-bottom: 150px; }
.method-heading { max-width: 860px; }
.method-heading p { max-width: 630px; margin: 26px 0 0; color: var(--muted); font-size: 1.02rem; }
.method-list {
  counter-reset: method-step;
  padding: 0;
  margin: 72px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px 72px;
  list-style: none;
}
.method-list li { min-height: 0; padding: 0; }
.method-list li::before {
  counter-increment: method-step;
  content: "0" counter(method-step);
  display: block;
  margin-bottom: 28px;
  color: var(--cyan);
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .12em;
}
.method-list strong { display: block; color: var(--cyan); font-size: 1.15rem; font-weight: 650; }
.method-list p { max-width: 480px; margin: 18px 0 0; color: var(--muted); }

.evidence {
  max-width: none;
  padding-left: max(28px, calc((100vw - var(--max)) / 2));
  padding-right: max(28px, calc((100vw - var(--max)) / 2));
  background: var(--navy-950);
}
.evidence-heading { max-width: 920px; }
.evidence-heading > p:last-child {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
}
.evidence-layout {
  max-width: var(--max);
  margin-top: 72px;
  display: grid;
  grid-template-columns: 1fr .92fr;
  align-items: start;
  gap: clamp(48px, 7vw, 94px);
}
.deliverable-list { border-top: 1px solid var(--line-strong); }
.deliverable-list > div {
  min-height: 86px;
  padding: 18px 2px;
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid var(--line);
}
.deliverable-list strong { color: var(--white); font-size: .94rem; font-weight: 650; }
.deliverable-list span { color: var(--muted); font-size: .875rem; }
.diagnostic-sample {
  position: sticky;
  top: 104px;
  padding: 30px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--navy-900);
}
.sample-header {
  padding-bottom: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--quiet);
  border-bottom: 1px solid var(--line);
  font-size: .75rem;
}
.sample-title-row {
  padding: 28px 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}
.sample-title-row p { margin: 0 0 4px; color: var(--cyan); font-size: .8125rem; font-weight: 700; }
.sample-title-row h3 { margin: 0; color: var(--white); font-size: 1.8rem; font-weight: 650; letter-spacing: -.025em; }
.sample-mark {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  border-top: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
}
.sample-details { margin: 0; border-top: 1px solid var(--line-strong); }
.sample-details > div { padding: 17px 0; border-bottom: 1px solid var(--line); }
.sample-details dt { color: var(--white); font-size: .8125rem; font-weight: 650; }
.sample-details dd { margin: 5px 0 0; color: var(--muted); font-size: .875rem; line-height: 1.55; }
.sample-footnote { margin: 22px 0 0; color: var(--cyan); font-size: .8125rem; font-weight: 650; }
.sample-download {
  min-height: 48px;
  margin-top: 22px;
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--white);
  border-top: 1px solid var(--line-strong);
  font-size: .9rem;
  font-weight: 700;
  text-decoration: none;
}
.sample-download span {
  color: var(--cyan);
  font-size: .75rem;
  letter-spacing: .08em;
}

.company-fit {
  max-width: none;
  padding-left: max(28px, calc((100vw - var(--max)) / 2));
  padding-right: max(28px, calc((100vw - var(--max)) / 2));
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  align-items: center;
  gap: 90px;
  background: var(--navy-950);
}
.fit-copy > p { max-width: 560px; margin: 26px 0 0; color: var(--muted); }
.text-link {
  min-height: 48px;
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  color: var(--cyan);
  font-weight: 700;
  text-underline-offset: 6px;
}
.fit-list { border-top: 1px solid var(--line-strong); }
.fit-list > div {
  min-height: 104px;
  padding: 20px 4px;
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  gap: 30px;
  border-bottom: 1px solid var(--line);
}
.fit-list strong { color: var(--white); font-size: .96rem; font-weight: 620; }
.fit-list span { color: var(--muted); font-size: .875rem; }

.start-options { padding-top: 118px; padding-bottom: 118px; }
.start-heading {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: end;
  gap: 70px;
}
.start-heading > p:last-child { max-width: 520px; margin: 0; color: var(--muted); }
.option-list {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.option-row { min-height: 300px; padding: 32px; border-radius: var(--radius); background: var(--navy-950); }
.option-row > span { color: var(--cyan); font-size: .875rem; font-weight: 700; }
.option-row h3 { margin: 44px 0 0; color: var(--white); font-size: 1.45rem; font-weight: 650; line-height: 1.2; }
.option-row p { margin: 18px 0 0; color: var(--muted); font-size: .9rem; }
.option-featured { background: rgba(86, 205, 221, .045); }
.start-options > .text-link { margin-top: 26px; }

.after-contact {
  max-width: none;
  padding-left: max(28px, calc((100vw - var(--max)) / 2));
  padding-right: max(28px, calc((100vw - var(--max)) / 2));
  background: var(--navy-950);
}
.after-contact-heading {
  max-width: var(--max);
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: end;
  gap: 70px;
}
.after-contact-heading p { max-width: 540px; margin: 0; color: var(--muted); }
.after-contact-list {
  max-width: var(--max);
  padding: 0;
  margin: 64px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  counter-reset: contact-step;
  list-style: none;
}
.after-contact-list li { min-height: 0; padding: 0; }
.after-contact-list li::before {
  counter-increment: contact-step;
  content: "0" counter(contact-step);
  display: block;
  margin-bottom: 28px;
  color: var(--cyan);
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .12em;
}
.after-contact-list strong { display: block; color: var(--white); font-size: 1.12rem; font-weight: 650; }
.after-contact-list p { margin: 18px 0 0; color: var(--muted); font-size: .9rem; }

.faq {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  align-items: start;
  gap: 90px;
}
.faq-heading { position: sticky; top: 110px; }
.faq-heading h2 { font-size: clamp(2.5rem, 4vw, 4rem); }
.faq-list { border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  min-height: 92px;
  padding: 22px 42px 22px 2px;
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--white);
  font-size: 1rem;
  font-weight: 620;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  color: var(--cyan);
  font-size: 1.45rem;
  font-weight: 400;
  transition: transform 180ms var(--ease-out);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { max-width: 720px; margin: -2px 52px 28px 2px; color: var(--muted); }

.contact-section {
  max-width: var(--max);
  min-height: 430px;
  margin: 40px auto 24px;
  padding: 68px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  gap: 70px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--navy-850);
}
.contact-copy p { max-width: 610px; margin: 26px 0 0; color: var(--muted); }
.contact-action { text-align: right; }
.button-contact { width: min(100%, 380px); min-height: 62px; color: var(--navy-1000); background: var(--cyan); }
.contact-action small { display: block; margin-top: 14px; color: var(--quiet); font-size: .8125rem; }

footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px 28px 30px;
  display: grid;
  grid-template-columns: 1.6fr .7fr .7fr;
  gap: 60px;
  color: var(--muted);
}
.footer-brand img { width: 226px; }
.footer-brand p { margin: 14px 0 0; font-size: .875rem; }
.footer-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; font-size: .875rem; }
.footer-nav strong { margin-bottom: 5px; color: var(--white); font-weight: 650; }
.footer-nav a { min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; transition: color 160ms ease; }
.footer-bottom {
  grid-column: 1 / -1;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  font-size: .75rem;
}
.footer-bottom a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); text-underline-offset: 4px; }

.legal-page {
  min-height: 100vh;
  padding: 132px max(24px, calc((100vw - 900px) / 2)) 96px;
}
.legal-page header { padding-bottom: 40px; border-bottom: 1px solid var(--line-strong); }
.legal-page h1 { max-width: 820px; font-size: clamp(2.8rem, 7vw, 5.4rem); }
.legal-page .legal-lede { max-width: 700px; margin: 24px 0 0; color: var(--muted); font-size: 1.05rem; }
.legal-content { max-width: 760px; padding-top: 52px; }
.legal-content section { padding: 30px 0; border-bottom: 1px solid var(--line); }
.legal-content h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.025em; }
.legal-content p, .legal-content li { color: var(--muted); }
.legal-content ul { padding-left: 22px; }
.legal-content a { color: var(--cyan); text-underline-offset: 4px; }
.legal-meta { margin: 0 0 12px; color: var(--cyan); font-size: .875rem; font-weight: 700; }

.not-found {
  min-height: 100dvh;
  padding: 110px 24px;
  display: grid;
  place-items: center;
}
.not-found-card { width: min(100%, 760px); padding: 56px; border: 1px solid var(--line-strong); background: var(--navy-950); }
.not-found-card h1 { font-size: clamp(3.2rem, 10vw, 6rem); }
.not-found-card p { max-width: 600px; margin: 24px 0 32px; color: var(--muted); }

.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 420ms var(--ease-out), transform 420ms var(--ease-out); }
.js .reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes hero-enter {
  from { opacity: 0; transform: translateY(18px); clip-path: inset(0 0 20% 0); }
  to { opacity: 1; transform: translateY(0); clip-path: inset(0); }
}
@keyframes model-enter {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes block-in { to { opacity: 1; transform: translateY(0); } }
@media (hover: hover) and (pointer: fine) {
  .main-nav a:not(.nav-cta):hover { color: var(--white); }
  .main-nav a:not(.nav-cta):hover::after { right: 0; }
  .main-nav .nav-cta:hover, .button-primary:hover, .button-contact:hover { background: #78dae5; }
  .button-secondary:hover { color: var(--white); border-color: var(--cyan); }
  .service-row:hover { background: rgba(86, 205, 221, .035); }
  .sample-download:hover { color: var(--cyan); }
  .footer-nav a:hover { color: var(--cyan); }
}

@media (max-width: 1040px) {
  .main-nav { gap: 17px; }
  .main-nav a { font-size: .78rem; }
  .hero { grid-template-columns: 1fr; min-height: auto; gap: 64px; }
  .hero-copy { max-width: 840px; }
  .operations-model { width: min(100%, 720px); min-height: auto; }
  .problem, .section-intro, .company-fit, .faq, .contact-section, .evidence-layout, .start-heading, .after-contact-heading { grid-template-columns: 1fr; }
  .problem { min-height: 0; gap: 44px; }
  .problem-body { max-width: 760px; }
  .section-intro { gap: 26px; }
  .company-fit, .faq, .contact-section { gap: 52px; }
  .faq-heading { position: static; }
  .diagnostic-sample { position: static; width: min(100%, 720px); }
  .start-heading, .after-contact-heading { gap: 26px; }
  .contact-action { text-align: left; }
}

@media (max-width: 860px) {
  :root { --header-offset: 78px; }
  .site-header { min-height: 68px; padding: 0 20px; background: rgba(3, 17, 29, .94); }
  .brand img { width: 196px; }
  .menu-button { display: block; }
  .main-nav {
    position: fixed;
    z-index: 60;
    inset: 64px 12px auto;
    padding: 14px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--navy-950);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 170ms var(--ease-out), transform 170ms var(--ease-out), visibility 0s linear 170ms;
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: translateY(0); transition-delay: 0s; }
  .main-nav a { min-height: 48px; padding: 0 12px; font-size: .9rem; }
  .main-nav .nav-cta { margin-top: 8px; justify-content: center; }
  .principles { margin: 24px 20px 0; grid-template-columns: 1fr; gap: 16px; }
  .primary-service { grid-template-columns: 1fr; gap: 40px; }
  .option-list { grid-template-columns: 1fr; }
  .after-contact-list { grid-template-columns: 1fr; }
  .after-contact-list { gap: 36px; }
  .option-row { min-height: 0; }
  .service-row { grid-template-columns: 1fr 1fr; gap: 12px 30px; }
  .service-row p { grid-column: 1 / -1; grid-row: 2; }
  .service-row > span { grid-column: 2; grid-row: 1; }
}

@media (max-width: 640px) {
  .brand img { width: 174px; }
  .hero { padding: 112px 20px 72px; }
  .hero-copy { padding-left: 0; }
  h1 { font-size: clamp(2.85rem, 14.2vw, 4.1rem); line-height: 1; }
  .hero-lede { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .operations-model { min-height: 0; padding: 34px 24px 28px; }
  .brand-blocks { width: 112px; height: 96px; }
  .brand-blocks span { width: 40px; height: 40px; }
  .brand-blocks span:nth-child(2) { left: 35px; bottom: 28px; }
  .brand-blocks span:nth-child(3) { left: 70px; bottom: 56px; }
  .model-flow > div { grid-template-columns: 1fr; gap: 2px; }
  .principles { margin: 18px 14px 0; padding: 22px 20px; }
  .section { padding: 96px 20px; }
  h2 { font-size: clamp(2.35rem, 12vw, 3.45rem); }
  .services, .company-fit, .evidence, .after-contact { padding-left: 20px; padding-right: 20px; }
  .primary-service { padding: 28px 22px; }
  .primary-service ul { grid-template-columns: 1fr; }
  .service-row { min-height: 0; padding: 24px 2px; grid-template-columns: 1fr; gap: 10px; }
  .service-row p, .service-row > span { grid-column: auto; grid-row: auto; justify-self: start; }
  .method { padding-top: 110px; padding-bottom: 110px; }
  .method-list { grid-template-columns: 1fr; }
  .method-list { gap: 44px; }
  .method-list li { min-height: 0; padding: 0 12px; }
  .method-list p { margin-top: 14px; }
  .fit-list > div { grid-template-columns: 1fr; gap: 5px; }
  .evidence-layout { margin-top: 52px; gap: 46px; }
  .deliverable-list > div { grid-template-columns: 1fr; gap: 5px; }
  .diagnostic-sample { padding: 24px 20px; }
  .sample-header { flex-direction: column; gap: 4px; }
  .option-row { padding: 28px 12px; }
  .option-row h3 { margin-top: 30px; }
  .after-contact-list { margin-top: 46px; }
  .after-contact-list li { padding: 0 12px; }
  .after-contact-list p { margin-top: 14px; }
  .contact-section { min-height: 0; margin: 14px; padding: 44px 24px; }
  .button-contact { width: 100%; }
  footer { padding: 58px 20px 28px; grid-template-columns: 1fr 1fr; gap: 38px 20px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
  .legal-page { padding: 104px 20px 72px; }
  .not-found-card { padding: 40px 24px; }
}

@media (max-width: 375px) {
  .brand img { width: 154px; }
  .hero { padding-left: 16px; padding-right: 16px; }
  .section, .services, .company-fit, .evidence, .after-contact { padding-left: 16px; padding-right: 16px; }
  .operations-model { padding-left: 20px; padding-right: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  h1, .hero-lede, .hero-actions, .hero-detail, .operations-model, .brand-blocks span { animation: none; }
  .js .reveal { opacity: 1; transform: none; transition: opacity 160ms ease; }
  .button, .main-nav, .menu-button > span:not(.sr-only), .faq summary::after { transition-duration: 80ms; }
}