* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f7fb;
  color: #1f2937;
  line-height: 1.6;
}

.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

.hero {
  min-height: 620px;
  background: linear-gradient(135deg, #111827, #1d4ed8);
  color: white;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
}

.nav-link {
  color: white;
  text-decoration: none;
  font-weight: 600;
}

.hero-content {
  padding: 100px 0 80px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  opacity: 0.8;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 1;
}

.subtitle {
  max-width: 680px;
  margin: 28px 0;
  font-size: 1.2rem;
  color: #dbeafe;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0;
}

button,
.secondary-button {
  border-radius: 8px;
  padding: 13px 20px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

button {
  border: 0;
  background: white;
  color: #1d4ed8;
}

.secondary-button {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: white;
  text-decoration: none;
}

.status-card {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #22c55e;
}

.section {
  padding: 80px 0;
}

h2 {
  margin-top: 0;
  font-size: 2.2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  padding: 28px;
  border-radius: 12px;
  background: white;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

.card h3 {
  margin-top: 0;
}

.architecture-section {
  background: #e8eef8;
}

.architecture {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.architecture-box {
  padding: 18px 22px;
  border-radius: 10px;
  background: white;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
  font-weight: 700;
}

.arrow {
  font-size: 1.5rem;
  font-weight: 700;
}

footer {
  padding: 28px 0;
  background: #111827;
  color: #cbd5e1;
}

footer .container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

@media (max-width: 760px) {
  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 70px 0;
  }

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

  .architecture {
    flex-direction: column;
  }

  .arrow {
    transform: rotate(90deg);
  }

  footer .container {
    flex-direction: column;
  }
}