:root {
  --blue-950: #000917;
  --blue-900: #001539;
  --blue-800: #05275e;
  --blue-700: #0b3f8c;
  --blue-500: #2f7df6;
  --ink: #061021;
  --muted: #586579;
  --paper: #f7f9fd;
  --paper-2: #eef3fb;
  --line: #d8e1ef;
  --white: #ffffff;
  --radius-xl: 34px;
  --radius-md: 22px;
  --shadow: 0 28px 90px rgba(6, 20, 50, 0.12);
  --content: 1360px;
  --gutter: clamp(20px, 4vw, 56px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 0%, rgba(47, 125, 246, 0.14), transparent 32rem),
    linear-gradient(180deg, #ffffff 0%, var(--paper) 52%, #ffffff 100%);
  font-family: "Aptos Display", "Segoe UI", system-ui, -apple-system, sans-serif;
  text-rendering: geometricPrecision;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }

.page-shell {
  width: 100%;
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 82px;
  padding: 0 max(var(--gutter), calc((100vw - var(--content)) / 2 + var(--gutter)));
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(216, 225, 239, 0.72);
  backdrop-filter: blur(22px);
}

.brand img {
  width: 152px;
  display: block;
}

nav {
  justify-self: center;
  display: flex;
  gap: clamp(18px, 2.5vw, 36px);
  color: #22344f;
  font-size: 0.94rem;
}

nav a,
.header-cta {
  opacity: 0.8;
  transition: opacity 180ms ease, color 180ms ease, transform 180ms ease;
}

nav a:hover,
.header-cta:hover {
  color: var(--blue-700);
  opacity: 1;
}

.header-cta {
  min-height: 38px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 650;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.72);
}

.hero {
  width: min(calc(100% - var(--gutter) * 2), var(--content));
  min-height: clamp(680px, calc(100svh - 82px), 820px);
  margin: 0 auto;
  padding: clamp(36px, 5vw, 72px) 0 clamp(54px, 6vw, 86px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 560px);
  gap: clamp(36px, 5vw, 78px);
  align-items: center;
}

.microcopy {
  margin: 0 0 18px;
  color: var(--blue-700);
  font-size: 0.82rem;
  line-height: 1;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 760;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(4rem, 6.8vw, 8.2rem);
  line-height: 0.9;
  letter-spacing: -0.082em;
  font-weight: 720;
}

.hero-lede {
  max-width: 720px;
  margin: 32px 0 0;
  color: var(--muted);
  font-size: clamp(1.16rem, 1.55vw, 1.46rem);
  line-height: 1.55;
  letter-spacing: -0.025em;
}

.actions {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  font-size: 0.98rem;
  font-weight: 720;
  letter-spacing: -0.015em;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--blue-900);
  box-shadow: 0 16px 42px rgba(0, 21, 57, 0.2);
}

.button-secondary {
  color: var(--blue-900);
  background: rgba(255, 255, 255, 0.74);
  border-color: var(--line);
}

.hero-visual {
  width: 100%;
  max-width: 560px;
  aspect-ratio: 1 / 1;
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 18%, rgba(88, 154, 255, 0.48), transparent 27%),
    radial-gradient(circle at 22% 82%, rgba(47, 125, 246, 0.26), transparent 32%),
    linear-gradient(145deg, var(--blue-950), var(--blue-900) 54%, var(--blue-800));
  box-shadow: var(--shadow);
  isolation: isolate;
}

.hero-visual::before,
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-visual::before {
  background-image:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(150deg, #000, transparent 78%);
}

.hero-visual::after {
  inset: auto -18% -22% auto;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.23), transparent 62%);
  filter: blur(6px);
}

.logo-card {
  position: absolute;
  left: 8%;
  right: 8%;
  top: 10%;
  padding: clamp(18px, 3vw, 34px);
  border-radius: 28px;
  background: rgba(0, 15, 42, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px);
}

.logo-card img {
  width: 100%;
  display: block;
}

.signal-card {
  position: absolute;
  width: min(44%, 230px);
  min-height: clamp(120px, 10vw, 152px);
  padding: clamp(16px, 1.7vw, 20px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(18px);
}

.signal-card span {
  color: rgba(255,255,255,0.64);
  font-size: 0.9rem;
}

.signal-card strong {
  font-size: clamp(2.4rem, 4vw, 4.4rem);
  line-height: 0.9;
  letter-spacing: -0.07em;
}

.card-a { left: 8%; bottom: 10%; }
.card-b { right: 8%; bottom: 24%; }
.card-c { right: 8%; top: 42%; min-height: 120px; }
.card-c strong { font-size: clamp(1.8rem, 2.7vw, 2.5rem); letter-spacing: -0.055em; }

.model-strip {
  width: min(calc(100% - var(--gutter) * 2), var(--content));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--line);
  box-shadow: 0 18px 70px rgba(6, 20, 50, 0.08);
}

.model-strip article {
  min-height: 390px;
  padding: clamp(26px, 3.6vw, 46px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: rgba(255,255,255,0.82);
}

.model-strip span,
.research-grid h3 {
  color: var(--blue-700);
}

.model-strip span {
  font-weight: 780;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}

.model-strip h2 {
  max-width: 420px;
  margin: 0;
  font-size: clamp(2rem, 3.1vw, 3.6rem);
  line-height: 0.98;
  letter-spacing: -0.062em;
}

.model-strip p,
.research-grid p,
.partners-inner p {
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.62;
  letter-spacing: -0.018em;
}

.research {
  width: min(calc(100% - var(--gutter) * 2), var(--content));
  margin: 0 auto;
  padding: clamp(80px, 10vw, 140px) 0;
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1fr);
  gap: clamp(44px, 8vw, 120px);
}

.section-heading h2,
.partners-inner h2 {
  margin: 0;
  font-size: clamp(3rem, 6.6vw, 8rem);
  line-height: 0.92;
  letter-spacing: -0.078em;
  font-weight: 720;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.research-grid article {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.72);
}

.research-grid h3 {
  margin: 0 0 42px;
  font-size: 1.22rem;
  letter-spacing: -0.03em;
}

.partners {
  width: min(calc(100% - var(--gutter) * 2), var(--content));
  margin: 0 auto;
  padding: 0 0 clamp(72px, 9vw, 120px);
}

.partners-inner {
  padding: clamp(30px, 5vw, 62px);
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  color: var(--white);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 84% 20%, rgba(79, 139, 255, 0.42), transparent 30%),
    linear-gradient(135deg, var(--blue-950), var(--blue-800));
  box-shadow: var(--shadow);
}

.partners-inner > img {
  width: 100%;
  padding: 16px;
  border-radius: 16px;
  background: var(--white);
}

.partners-inner .microcopy { color: rgba(255,255,255,0.68); }
.partners-inner h2 { color: var(--white); font-size: clamp(2.4rem, 4.8vw, 5.8rem); }
.partners-inner p:not(.microcopy) { max-width: 760px; margin-top: 24px; color: rgba(255,255,255,0.72); }
.partners-inner .button-primary { background: var(--white); color: var(--blue-900); box-shadow: none; }

footer {
  padding: 34px max(var(--gutter), calc((100vw - var(--content)) / 2 + var(--gutter)));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: #667286;
  border-top: 1px solid var(--line);
  font-size: 0.94rem;
}

@media (max-width: 1180px) and (min-width: 901px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 480px);
    gap: clamp(28px, 4vw, 48px);
  }

  .hero h1 {
    max-width: 520px;
    font-size: clamp(3.4rem, 5.8vw, 5.9rem);
    line-height: 0.92;
    letter-spacing: -0.075em;
  }

  .hero-visual {
    max-width: 480px;
  }

  .card-b {
    bottom: 12%;
  }

  .card-c {
    display: none;
  }

  .button {
    min-height: 50px;
    padding-inline: 18px;
  }
}

@media (max-width: 900px) {
  .hero,
  .research,
  .partners-inner { grid-template-columns: 1fr; }
  .hero-visual { min-height: 560px; }
  .model-strip { grid-template-columns: 1fr; }
  .model-strip article { min-height: 280px; }
  .partners-inner > img { width: 190px; }
}

@media (max-width: 720px) {
  .site-header { height: 72px; grid-template-columns: 1fr auto; }
  .brand img { width: 126px; }
  nav { display: none; }
  .header-cta { display: none; }
  .hero {
    min-height: auto;
    padding: 56px 24px 58px;
    display: block;
    overflow: hidden;
  }
  .hero-copy,
  .hero-visual {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .hero h1 {
    max-width: 340px;
    font-size: clamp(2.75rem, 13.2vw, 3.55rem);
    line-height: 0.94;
    letter-spacing: -0.068em;
    overflow-wrap: normal;
  }
  .hero-lede {
    max-width: 330px;
    font-size: 1.02rem;
  }
  .actions { display: grid; grid-template-columns: 1fr; }
  .hero .actions {
    max-width: 330px;
  }
  .button { width: 100%; }
  .hero-visual {
    width: calc(100vw - 48px);
    max-width: 342px;
    min-height: 500px;
    margin-top: 42px;
    border-radius: 26px;
  }
  .logo-card { left: 18px; right: 18px; top: 24px; border-radius: 20px; }
  .signal-card { width: calc(100% - 36px); min-height: 128px; }
  .card-a { left: 18px; bottom: 24px; }
  .card-b { right: 18px; bottom: 170px; }
  .card-c { display: none; }
  .model-strip { margin-left: 18px; margin-right: 18px; border-radius: 26px; }
  .research-grid { grid-template-columns: 1fr; }
  .section-heading h2,
  .partners-inner h2 { font-size: clamp(2.7rem, 13vw, 4.2rem); }
  .partners-inner > img { width: 160px; }
  footer { align-items: flex-start; flex-direction: column; }
}