:root {
  --navy: #102a43;
  --ink: #17324d;
  --teal: #0b7a75;
  --mint: #e9f4f2;
  --blue: #eaf0f6;
  --gray: #5f6b76;
  --line: #cfd8e3;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #f7fafc;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: var(--teal); }
a:focus-visible, button:focus-visible { outline: 3px solid #f5a623; outline-offset: 4px; }
.skip-link { position: absolute; left: -9999px; top: 12px; z-index: 10; background: white; padding: 10px 16px; }
.skip-link:focus { left: 12px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(24px, 6vw, 92px);
  color: white;
  background: rgba(16, 42, 67, .96);
  backdrop-filter: blur(12px);
}
.brand { color: white; text-decoration: none; font-weight: 850; letter-spacing: .08em; }
.brand span { color: #7fe0d4; }
nav { display: flex; gap: 24px; }
nav a { color: white; text-decoration: none; font-size: .92rem; }
main { overflow: hidden; }
section { max-width: 1180px; margin: 0 auto; padding: 92px 32px; }
.hero {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: 70px;
  align-items: center;
  min-height: 680px;
  padding-inline: clamp(32px, 8vw, 140px);
  color: white;
  background:
    radial-gradient(circle at 78% 22%, rgba(11, 122, 117, .46), transparent 32%),
    var(--navy);
}
.eyebrow { margin: 0 0 14px; color: var(--teal); font-size: .78rem; font-weight: 850; letter-spacing: .16em; }
.hero .eyebrow { color: #7fe0d4; }
h1 { max-width: 850px; margin: 0; font-size: clamp(3rem, 6vw, 5.7rem); line-height: .98; letter-spacing: -.055em; }
h2 { max-width: 760px; margin: 0 0 24px; font-size: clamp(2.1rem, 4vw, 3.6rem); line-height: 1.05; letter-spacing: -.04em; }
h3 { margin: 10px 0; font-size: 1.35rem; }
.lede { max-width: 760px; margin: 28px 0; color: #d9e5ef; font-size: 1.2rem; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; min-height: 50px; padding: 12px 22px; border: 2px solid transparent; border-radius: 10px; font-weight: 750; text-decoration: none; }
.button.primary { color: white; background: var(--teal); }
.button.secondary { color: var(--ink); background: white; border-color: var(--line); }
.hero .button.secondary { color: white; background: transparent; border-color: #9bb2c7; }
.fine { color: #b9c9d8; font-size: .85rem; }
.context-stack { display: grid; gap: 12px; }
.context-stack div { display: flex; gap: 20px; align-items: center; padding: 22px; border: 1px solid rgba(255,255,255,.2); border-radius: 14px; background: rgba(255,255,255,.08); }
.context-stack strong { color: #7fe0d4; font-size: .8rem; }
.context-stack span { font-size: 1.05rem; font-weight: 700; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cards article { padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: white; box-shadow: 0 18px 50px rgba(16,42,67,.06); }
.cards .number { color: var(--teal); font-size: .8rem; font-weight: 850; letter-spacing: .12em; }
.demo { display: grid; grid-template-columns: .8fr 1.2fr; gap: 45px; align-items: center; max-width: none; padding-inline: clamp(32px, 6vw, 100px); background: var(--mint); }
.demo img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 24px 70px rgba(16,42,67,.16); }
.boundary { padding: 16px; border-left: 4px solid var(--teal); background: white; }
.evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; }
.evidence-grid div { padding: 24px; border-radius: 14px; background: var(--blue); }
.evidence-grid strong, .evidence-grid span { display: block; }
.evidence-grid strong { margin-bottom: 6px; color: var(--navy); font-size: 1.5rem; }
.departments { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0; list-style: none; }
.departments li { padding: 16px 20px; border-left: 4px solid var(--teal); background: white; }
.cta { max-width: none; padding-inline: clamp(32px, 8vw, 140px); background: var(--navy); color: white; }
.cta .eyebrow { color: #7fe0d4; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 30px clamp(32px, 8vw, 140px); color: #d9e5ef; background: #091d2f; font-size: .9rem; }
footer a { color: #7fe0d4; }
code { padding: .12em .35em; border-radius: 4px; background: var(--blue); font-size: .9em; }

@media (max-width: 850px) {
  nav { display: none; }
  .hero, .demo { grid-template-columns: 1fr; }
  .hero { padding-top: 70px; }
  .cards, .evidence-grid, .departments { grid-template-columns: 1fr; }
  section { padding: 68px 22px; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}