:root {
  --ink: #0d1117;
  --muted: #5d6778;
  --paper: #ffffff;
  --wash: #f5f7fb;
  --line: #dfe5ee;
  --amber: #fbbf24;
  --amber-strong: #f59e0b;
  --green: #047857;
  --teal: #0f766e;
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  align-items: center;
  display: flex;
  gap: 24px;
  inset: 0 0 auto 0;
  justify-content: space-between;
  padding: 22px clamp(20px, 5vw, 64px);
  position: absolute;
  z-index: 3;
}

.brand {
  align-items: center;
  color: white;
  display: inline-flex;
  gap: 12px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand img {
  background: rgba(255, 255, 255, 0.94);
  border-radius: 999px;
  height: 42px;
  object-fit: contain;
  padding: 5px;
  width: 42px;
}

nav {
  display: flex;
  gap: 20px;
}

nav a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 800;
}

nav a:hover {
  color: white;
}

.hero {
  align-items: center;
  background-image:
    linear-gradient(90deg, rgba(3, 7, 18, 0.94), rgba(3, 7, 18, 0.75), rgba(3, 7, 18, 0.4)),
    url("assets/splash_banner.png");
  background-position: center;
  background-size: cover;
  color: white;
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.5fr);
  min-height: 88svh;
  padding: 118px clamp(20px, 5vw, 64px) 86px;
  position: relative;
}

.hero::after {
  background: linear-gradient(0deg, white, rgba(255, 255, 255, 0));
  bottom: 0;
  content: "";
  height: 96px;
  left: 0;
  position: absolute;
  right: 0;
}

.hero__content {
  max-width: 770px;
  position: relative;
  z-index: 1;
}

.eyebrow {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  color: #fde68a;
  display: inline-flex;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.18em;
  margin: 0 0 18px;
  padding: 9px 14px;
  text-transform: uppercase;
}

.eyebrow--dark {
  background: #ecfdf5;
  border-color: #bbf7d0;
  color: var(--green);
}

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

h1 {
  font-size: clamp(48px, 8vw, 92px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 0.95;
  margin-bottom: 24px;
}

.hero__copy {
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  line-height: 1.65;
  max-width: 690px;
}

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

.button {
  border-radius: 999px;
  display: inline-flex;
  font-size: 14px;
  font-weight: 900;
  justify-content: center;
  min-width: 150px;
  padding: 16px 22px;
  text-transform: uppercase;
}

.button--primary {
  background: var(--amber);
  color: #111827;
}

.button--primary:hover {
  background: #fcd34d;
}

.button--secondary {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
  color: white;
}

.hero__vehicle {
  position: relative;
  z-index: 1;
}

.hero__vehicle img {
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  display: block;
  max-height: 480px;
  object-fit: cover;
  width: 100%;
}

.features {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: -40px auto 0;
  max-width: 1180px;
  padding: 0 clamp(20px, 5vw, 64px) 72px;
  position: relative;
  z-index: 2;
}

.features article,
.system__grid article {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.feature-icon {
  align-items: center;
  background: #ecfdf5;
  border-radius: 8px;
  color: var(--green);
  display: flex;
  font-size: 14px;
  font-weight: 900;
  height: 48px;
  justify-content: center;
  margin-bottom: 22px;
  width: 48px;
}

.features h2,
.system h2,
.contact h2 {
  font-size: clamp(28px, 4vw, 50px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.05;
  margin-bottom: 14px;
}

.features h2 {
  font-size: 22px;
}

.features p,
.system p,
.contact p {
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  margin-bottom: 0;
}

.system {
  align-items: center;
  background: var(--wash);
  display: grid;
  gap: 44px;
  grid-template-columns: 0.85fr 1fr;
  padding: 76px clamp(20px, 5vw, 64px);
}

.system__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.system__grid article {
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
}

.system__grid h3 {
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 10px;
}

.contact {
  align-items: center;
  background: linear-gradient(135deg, #0f172a, #0f766e);
  color: white;
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.45fr);
  padding: 74px clamp(20px, 5vw, 64px);
}

.contact p {
  color: rgba(255, 255, 255, 0.72);
  max-width: 660px;
}

.contact img {
  justify-self: end;
  max-height: 190px;
  object-fit: contain;
  width: min(340px, 100%);
}

footer {
  align-items: center;
  background: #05070c;
  color: white;
  display: flex;
  font-size: 14px;
  font-weight: 800;
  justify-content: space-between;
  padding: 28px clamp(20px, 5vw, 64px);
}

footer span:last-child {
  color: rgba(255, 255, 255, 0.56);
}

@media (max-width: 780px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 88svh;
    padding-top: 154px;
  }

  .hero__vehicle {
    display: none;
  }

  .features,
  .system,
  .system__grid,
  .contact {
    grid-template-columns: 1fr;
  }

  .contact img {
    justify-self: start;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}