body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #0b1020;
  color: #eef1ff;
}

header {
  background: #121733;
  padding: 10px 20px;
}

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

.nav a {
  color: #eef1ff;
  margin: 0 10px;
  text-decoration: none;
}

.btn {
  background: #8ef0d0;
  padding: 5px 12px;
  border-radius: 5px;
  color: #042;
  font-weight: bold;
}

.hero {
  padding: 50px;
  text-align: center;
}

section {
  padding: 40px 20px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #121733;
  color: #bbc3ff;
}