* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(180deg, #06122a 0%, #081a3a 100%);
  color: #f8fafc;
}

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

.container {
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  background: rgba(10, 18, 36, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
}

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

nav a {
  color: #cbd5e1;
  font-weight: 600;
}

nav a:hover {
  color: #ffffff;
}

.hero {
  padding: 90px 0 70px;
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.16);
  color: #bfdbfe;
  font-size: 0.95rem;
  font-weight: 700;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  line-height: 1.05;
}

.hero-text {
  margin: 0;
  max-width: 680px;
  font-size: 1.15rem;
  line-height: 1.75;
  color: #cbd5e1;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 14px 20px;
  border-radius: 12px;
  font-weight: 700;
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}

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

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

.button.primary:hover {
  background: #1d4ed8;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}

.button.secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.section {
  padding: 20px 0 50px;
}

.section-title {
  margin: 0 0 24px;
  font-size: 2rem;
}

.card {
  background: rgba(30, 41, 59, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.22);
}

.card h2,
.card h3 {
  margin-top: 0;
}

.card p {
  color: #cbd5e1;
  line-height: 1.7;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature-card h3 {
  margin-bottom: 12px;
}

.footer {
  padding: 10px 0 40px;
  color: #94a3b8;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 12px;
    padding: 14px 0;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 70px;
  }

  .card {
    padding: 24px;
  }

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

  .button {
    width: 100%;
    text-align: center;
  }
}