:root {
  --bg: #050608;
  --panel: #0c0f14;
  --panel-2: #121722;
  --ink: #f7fafc;
  --muted: #9aa6b5;
  --line: #242b38;
  --accent: #4ade80;
  --accent-2: #38bdf8;
  --warning: #f8c15c;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 0%, rgba(74, 222, 128, 0.14), transparent 26rem),
    radial-gradient(circle at 80% 12%, rgba(56, 189, 248, 0.1), transparent 24rem),
    var(--bg);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 56px;
  background: rgba(5, 6, 8, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.brand,
nav,
.hero-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #071009;
  background: var(--accent);
  border-radius: 8px;
  font-size: 13px;
}

nav {
  gap: 28px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

main {
  overflow: hidden;
}

.hero {
  max-width: 1180px;
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: 104px 32px 88px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 980px;
  margin-bottom: 26px;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.18;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.58;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 850;
}

.button.primary {
  color: #071009;
  background: var(--accent);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.signal-grid,
.section {
  max-width: 1180px;
  margin: 0 auto;
  padding-right: 32px;
  padding-left: 32px;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-bottom: 84px;
}

.signal-grid article,
.feature-list article,
.model-grid article {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.028));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

.signal-grid article {
  min-height: 250px;
  padding: 28px;
  border-radius: 18px;
}

.signal-grid span {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--accent);
  font-weight: 900;
}

.signal-grid h2 {
  margin-bottom: 12px;
  font-size: 28px;
}

.signal-grid p,
.section-heading p,
.feature-list p,
.model-grid p {
  color: var(--muted);
  line-height: 1.62;
}

.section {
  padding-top: 90px;
  padding-bottom: 90px;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 38px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-list article {
  min-height: 190px;
  padding: 26px;
  border-radius: 16px;
}

.feature-list h3::before {
  display: block;
  width: 34px;
  height: 3px;
  margin-bottom: 18px;
  background: var(--accent);
  border-radius: 99px;
  content: "";
}

.model-section {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 72px;
}

.model-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.model-grid article {
  padding: 26px;
  border-radius: 16px;
}

.model-grid h3 {
  color: var(--accent-2);
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 24px;
  }

  nav {
    display: none;
  }

  .signal-grid,
  .feature-list,
  .model-section,
  .model-grid {
    grid-template-columns: 1fr;
  }

  .hero,
  .section,
  .signal-grid {
    padding-right: 22px;
    padding-left: 22px;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 46px;
  }

  .hero {
    padding-top: 72px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}