* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0b0f14;
  color: #ffffff;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 60px;
  gap: 40px;
  align-items: center;
}

.hero-text h1 {
  font-size: 48px;
  margin-bottom: 16px;
}

.hero-text p {
  color: #9ca3af;
  max-width: 480px;
  margin-bottom: 32px;
}

.actions {
  display: flex;
  gap: 16px;
}

button {
  padding: 14px 28px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 15px;
}

button.primary {
  background: #2563eb;
  color: white;
}

button.secondary {
  background: transparent;
  border: 1px solid #374151;
  color: white;
}

/* 3D VIEW */
model-viewer {
  width: 100%;
  height: 500px;
}

/* SPECS */
.specs {
  padding: 80px 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.spec-card {
  background: #111827;
  padding: 28px;
  border-radius: 16px;
}

.spec-card span {
  font-size: 14px;
  color: #9ca3af;
}

.spec-card strong {
  display: block;
  font-size: 22px;
  margin-top: 8px;
}

/* APPLICATIONS */
.applications {
  padding: 80px 60px;
  background: #020617;
}

.applications h2 {
  margin-bottom: 32px;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.app-grid div {
  background: #111827;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
}

/* CTA */
.cta {
  padding: 80px 60px;
  text-align: center;
}

.cta h3 {
  margin-bottom: 24px;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 24px;
  }

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

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