:root {
  --ink: #172023;
  --ink-soft: #3f4a4d;
  --paper: #f8faf8;
  --paper-strong: #ffffff;
  --line: #dbe4df;
  --teal: #1f9d8b;
  --teal-dark: #107260;
  --violet: #6f43df;
  --gold: #d29b35;
  --night: #101719;
  --night-soft: #1e2a2d;
  --shadow: 0 20px 60px rgba(23, 32, 35, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
}

img {
  display: block;
  max-width: 100%;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  min-height: 72px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(248, 250, 248, 0.88);
  border-bottom: 1px solid rgba(219, 228, 223, 0.82);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: white;
  background: var(--ink);
  border-radius: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 650;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--teal-dark);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: calc(100svh - 72px);
  padding: clamp(36px, 6vw, 84px) clamp(20px, 5vw, 72px) clamp(22px, 4vw, 48px);
}

.hero-copy {
  max-width: 700px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(4rem, 13vw, 8.8rem);
  line-height: 0.88;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(2rem, 5vw, 4.35rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  line-height: 1.2;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 600px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.1;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  color: white;
  background: var(--teal-dark);
}

.button-secondary {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
}

.button-light {
  color: var(--night);
  background: white;
  white-space: nowrap;
}

.hero-visual {
  align-self: stretch;
  display: flex;
  align-items: center;
  min-width: 0;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid rgba(219, 228, 223, 0.82);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.section {
  padding: clamp(58px, 8vw, 118px) clamp(20px, 5vw, 72px);
}

.section-muted {
  background: var(--paper-strong);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-inner {
  width: min(1160px, 100%);
  margin: 0 auto;
}

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

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 38px;
}

.feature-card {
  min-height: 176px;
  padding: 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feature-card p,
.pilot-band p,
.footer p {
  margin: 0;
  color: var(--ink-soft);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1fr);
  gap: clamp(34px, 6vw, 86px);
  align-items: start;
}

.timeline {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  min-height: 76px;
  padding: 18px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.timeline span {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: white;
  background: var(--violet);
  border-radius: 8px;
  font-weight: 850;
}

.timeline p {
  margin: 0;
  color: var(--ink-soft);
}

.section-dark {
  color: white;
  background: var(--night);
}

.section-dark .eyebrow {
  color: #88d7cb;
}

.section-dark h2 {
  max-width: 760px;
}

.pilot-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(24px, 6vw, 80px);
}

.pilot-band p {
  max-width: 720px;
  margin-top: 18px;
  color: #d5dfdc;
  font-size: 1.08rem;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 72px);
  background: var(--night-soft);
}

.footer p {
  color: #c8d3d0;
  font-size: 0.9rem;
}

@media (max-width: 940px) {
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: auto;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .pilot-band,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 660px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    min-height: 0;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    font-size: 0.9rem;
  }

  .hero {
    padding-top: 34px;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 5rem);
  }

  .button,
  .button-light {
    width: 100%;
    white-space: normal;
  }

  .timeline li {
    grid-template-columns: 48px minmax(0, 1fr);
    padding: 14px;
  }
}