:root {
  --ink: #0d1530;
  --muted: #606a7f;
  --paper: #f7f4ee;
  --white: #ffffff;
  --blue: #0b2d72;
  --teal: #087c7c;
  --line: rgba(13, 21, 48, 0.14);
  --shadow: 0 24px 70px rgba(13, 21, 48, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

.hero {
  min-height: 82vh;
  display: grid;
  grid-template-rows: auto 1fr;
  background:
    radial-gradient(circle at 20% 10%, rgba(8, 124, 124, 0.35), transparent 34%),
    radial-gradient(circle at 84% 24%, rgba(11, 45, 114, 0.36), transparent 30%),
    linear-gradient(145deg, #07142f, #10295d 50%, #0b6f70);
  color: var(--white);
}

.nav {
  display: flex;
  justify-content: flex-end;
  gap: 1.2rem;
  padding: 1.4rem clamp(1.25rem, 4vw, 4rem);
}

.nav a {
  color: rgba(255,255,255,.86);
  text-decoration: none;
  font-size: .92rem;
  letter-spacing: .02em;
}

.nav a:hover { color: #fff; }

.hero-inner {
  align-self: center;
  width: min(1100px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding-bottom: 8vh;
}

.eyebrow, .kicker {
  margin: 0 0 .8rem;
  font-size: .76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--teal);
}

.hero .eyebrow { color: rgba(255,255,255,.72); }

h1 {
  margin: 0;
  font-size: clamp(4rem, 13vw, 11rem);
  line-height: .86;
  letter-spacing: -.08em;
}

.subtitle {
  max-width: 760px;
  margin: 2rem 0 0;
  font-size: clamp(1.25rem, 2.7vw, 2rem);
  line-height: 1.22;
  color: rgba(255,255,255,.86);
}

.section {
  padding: clamp(4rem, 8vw, 8rem) clamp(1.25rem, 4vw, 4rem);
}

.content {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.narrow { width: min(850px, 100%); }

.lead {
  font-size: clamp(1.3rem, 2.2vw, 2rem);
  line-height: 1.28;
  margin-top: 0;
  letter-spacing: -.03em;
}

p { font-size: 1.05rem; color: var(--muted); }

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  width: min(1180px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding-left: 0;
  padding-right: 0;
}

.panel {
  min-height: 430px;
  border-radius: 34px;
  padding: clamp(2rem, 4vw, 4rem);
  box-shadow: var(--shadow);
}

.panel h2, .framework h2, .thesis h2 {
  margin: 0 0 1.1rem;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: .96;
  letter-spacing: -.06em;
}

.panel.dark {
  color: var(--white);
  background: linear-gradient(150deg, #080f24, #0b2d72);
}

.panel.dark p { color: rgba(255,255,255,.76); }
.panel.dark .kicker { color: rgba(255,255,255,.66); }

.panel.light {
  background: var(--white);
  border: 1px solid var(--line);
}

.gradient {
  background: linear-gradient(135deg, #07142f, #087c7c);
}

.gradient p { color: rgba(255,255,255,.78); }
.gradient .inverse { color: #fff; }

.framework {
  background: #fff;
}

.framework p { max-width: 940px; }

.diagram {
  margin: 3rem 0 0;
  border-radius: 30px;
  overflow: hidden;
  background: #f2f6f7;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.diagram img {
  width: 100%;
  display: block;
}

figcaption {
  padding: 1rem 1.2rem 1.2rem;
  color: var(--muted);
  font-size: .95rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  width: min(1180px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding-left: 0;
  padding-right: 0;
}

.cards article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 2rem;
}

.cards span {
  display: inline-flex;
  width: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(8, 124, 124, 0.12);
  color: var(--teal);
  font-weight: 800;
}

.cards h3 {
  margin: 1.5rem 0 .75rem;
  font-size: 1.4rem;
}

.thesis {
  background: linear-gradient(180deg, #f7f4ee, #e8efe9);
}

.thesis .content {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 36px;
  padding: clamp(2rem, 5vw, 4.5rem);
  box-shadow: var(--shadow);
}

.thesis p:last-child {
  font-size: clamp(1.1rem, 1.7vw, 1.35rem);
  color: #30384d;
}

.footer {
  padding: 2rem clamp(1.25rem, 4vw, 4rem);
  background: #07142f;
}

.footer p {
  width: min(1120px, 100%);
  margin: 0 auto;
  color: rgba(255,255,255,.62);
  font-size: .95rem;
}

@media (max-width: 820px) {
  .nav { justify-content: flex-start; }
  .split, .cards { grid-template-columns: 1fr; }
  .panel { min-height: auto; }
  h1 { letter-spacing: -.06em; }
}