body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #0a0f1c;
  color: #fff;
}

.nav {
  display: flex;
  justify-content: space-between;
  padding: 20px 40px;
  position: fixed;
  width: 100%;
  background: rgba(10,15,28,0.8);
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(to bottom, #000, #0a0f1c);
}

.hero h2 {
  font-size: 48px;
}

.section {
  padding: 80px 40px;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap: 20px;
}

.card {
  background: #161b22;
  padding: 30px;
  border-radius: 10px;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-10px);
  background: #00adb5;
  color: black;
}

.btn {
  background: #00adb5;
  padding: 12px 25px;
  color: black;
  text-decoration: none;
}

.cta {
  background: #00adb5;
  padding: 60px;
  text-align: center;
  color: black;
}