:root {
  --navy: #07152f;
  --blue: #165dce;
  --ink: #102346;
  --muted: #5e6c82;
  --line: #d7deea;
  --wash: #f3f6fa;
  --white: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--white); }
a { color: inherit; text-decoration: none; }

.site-header, .site-footer { align-items: center; display: flex; justify-content: space-between; }
.site-header { border-bottom: 1px solid var(--line); min-height: 86px; padding: 0 5vw; }
.site-header nav { align-items: center; display: flex; gap: 32px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.site-header nav a { color: var(--muted); transition: color .2s ease; }
.site-header nav a:hover, .site-footer a:hover { color: var(--blue); }
.nav-cta { border: 1px solid var(--ink); color: var(--ink) !important; padding: 12px 16px; }
.mini-wordmark { color: var(--navy); font-size: 21px; font-weight: 700; letter-spacing: .28em; }
.mini-wordmark span { color: var(--blue); letter-spacing: -.2em; margin-left: 2px; }

.section-pad { padding: 118px 9vw; }
.hero { display: grid; gap: 9vw; grid-template-columns: minmax(0, 1.2fr) minmax(220px, .55fr); min-height: 720px; padding-top: 86px; }
.wordmark-crop { height: 112px; margin-left: -18px; overflow: hidden; width: min(520px, 70vw); }
.wordmark-crop img { display: block; max-width: none; transform: translateY(-55px); width: 520px; }
.kicker, .section-label, .rule-label { color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .18em; line-height: 1.4; text-transform: uppercase; }
.kicker { margin: 24px 0 20px; }
h1, h2, h3, p { margin-top: 0; }
h1 { color: var(--navy); font-size: clamp(54px, 7vw, 106px); font-weight: 500; letter-spacing: -.055em; line-height: .94; margin-bottom: 28px; }
h2 { color: var(--navy); font-size: clamp(42px, 5.2vw, 76px); font-weight: 500; letter-spacing: -.055em; line-height: .96; margin-bottom: 0; }
h2 em { color: var(--blue); font-style: normal; }
.hero-copy { color: var(--muted); font-size: 18px; line-height: 1.55; max-width: 520px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { align-items: center; display: inline-flex; font-size: 12px; font-weight: 700; gap: 18px; letter-spacing: .08em; padding: 16px 19px; text-transform: uppercase; }
.button-dark { background: var(--navy); color: var(--white); }
.button-light { border: 1px solid var(--line); color: var(--ink); }
.button-white { background: var(--white); color: var(--navy); }
.hero-aside { align-self: end; border-top: 1px solid var(--ink); padding-top: 17px; }
.hero-aside .rule-label { color: var(--ink); }
.hero-architecture { display: flex; flex-direction: column; font-size: 19px; font-weight: 600; line-height: 1.2; margin: 44px 0; }
.hero-architecture i { background: var(--blue); height: 32px; margin: 11px 0 11px 3px; width: 1px; }
.hero-aside p { color: var(--muted); font-size: 14px; line-height: 1.5; max-width: 250px; }

.band-light { background: var(--wash); }
.band-navy { background: var(--navy); color: var(--white); }
.section-label { margin-bottom: 54px; }
.section-label-inverse { color: #82b2ff; }
.two-column { display: grid; gap: 10vw; grid-template-columns: minmax(0, 1fr) minmax(260px, .72fr); }
.section-copy, .lead { color: var(--muted); font-size: 18px; line-height: 1.6; }
.section-copy p + p { margin-top: 22px; }
.approach-heading, .pilots-heading, .backbone-heading { align-items: end; }
.proof-path { border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 100px; }
.proof-path > div { border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 33px; min-height: 166px; padding: 20px 18px 0 0; }
.proof-path > div + div { padding-left: 18px; }
.proof-path span, .technology-grid span, .pilot-index { color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.proof-path strong { color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.15; }

.backbone h2, .vision h2 { color: var(--white); }
.backbone .lead, .vision p { color: #b9c6d9; }
.canonical-chain { align-items: center; display: flex; flex-wrap: wrap; gap: 13px; margin-top: 94px; }
.canonical-chain span { color: var(--white); font-size: 15px; font-weight: 600; }
.canonical-chain b { color: #5c8fe5; font-weight: 400; }
.canonical-chain hr { border: 0; border-top: 1px solid #304363; flex-basis: 100%; margin: 22px 0 12px; }
.backbone-note { border-top: 1px solid #304363; color: #b9c6d9; font-size: 15px; line-height: 1.6; margin: 58px 0 0 auto; max-width: 420px; padding-top: 17px; }

.pilot-list { border-top: 1px solid var(--line); margin-top: 100px; }
.pilot-list article { align-items: center; border-bottom: 1px solid var(--line); display: grid; gap: 30px; grid-template-columns: 1.1fr .9fr 1.6fr; padding: 25px 0; }
.pilot-list article > div { align-items: center; display: flex; gap: 25px; }
.pilot-list h3 { color: var(--navy); font-size: 30px; font-weight: 500; letter-spacing: -.04em; margin: 0; }
.pilot-list p { color: var(--muted); font-size: 12px; letter-spacing: .08em; margin: 0; text-transform: uppercase; }
.pilot-list strong { color: var(--ink); font-size: 16px; font-weight: 500; }

.technology-grid { display: grid; gap: 0 22px; grid-template-columns: 1fr 1fr; }
.technology-grid div { border-top: 1px solid var(--line); padding: 17px 0 30px; }
.technology-grid strong { display: block; font-size: 19px; font-weight: 600; line-height: 1.2; margin-top: 28px; }
.technology-grid p { color: var(--muted); font-size: 14px; line-height: 1.5; margin: 12px 0 0; }
.text-link { border-bottom: 1px solid var(--blue); color: var(--blue); display: inline-flex; font-size: 12px; font-weight: 700; gap: 20px; letter-spacing: .08em; margin-top: 26px; padding-bottom: 8px; text-transform: uppercase; }
.vision h2 { max-width: 900px; }
.vision-footer { align-items: end; border-top: 1px solid #304363; display: flex; justify-content: space-between; margin-top: 100px; padding-top: 23px; }
.vision-footer p { font-size: 16px; line-height: 1.5; max-width: 430px; }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; letter-spacing: .08em; padding: 29px 5vw; text-transform: uppercase; }
.site-footer a { color: var(--ink); }

@media (max-width: 800px) {
  .site-header { min-height: 72px; padding: 0 6vw; }
  .site-header nav { gap: 13px; }
  .site-header nav a:not(.nav-cta) { display: none; }
  .nav-cta { padding: 10px 12px; }
  .section-pad { padding: 78px 7vw; }
  .hero { display: block; min-height: auto; padding-top: 54px; }
  .wordmark-crop { margin-left: -10px; transform: scale(.82); transform-origin: left top; width: 520px; }
  h1 { font-size: clamp(49px, 14vw, 76px); margin-top: -4px; }
  .hero-copy, .section-copy, .lead { font-size: 16px; }
  .hero-aside { margin-top: 70px; }
  .two-column { display: block; }
  .two-column > * + * { margin-top: 35px; }
  .section-label { margin-bottom: 38px; }
  .proof-path { grid-template-columns: 1fr 1fr; margin-top: 55px; }
  .proof-path > div:nth-child(2n) { border-right: 0; }
  .proof-path > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .canonical-chain { gap: 9px; margin-top: 58px; }
  .canonical-chain span { font-size: 13px; }
  .pilot-list { margin-top: 55px; }
  .pilot-list article { display: block; padding: 22px 0; }
  .pilot-list article p { margin: 13px 0 12px 38px; }
  .pilot-list article strong { display: block; margin-left: 38px; }
  .technology-grid { margin-top: 35px; }
  .vision-footer { align-items: start; display: block; margin-top: 60px; }
  .vision-footer .button { margin-top: 20px; }
  .site-footer { align-items: start; flex-direction: column; gap: 15px; padding: 25px 7vw; }
}

@media (max-width: 480px) {
  .mini-wordmark { font-size: 17px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { justify-content: space-between; }
  .technology-grid { display: block; }
  .canonical-chain hr { margin: 15px 0 8px; }
}