body {
  font-family: Arial, sans-serif;
  margin: 0; padding: 0;
  background: #f9f9f9; color: #333;
}

header {
  background: #0a192f; color: #fff;
  padding: 1rem;
}

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

.nav-links { list-style: none; display: flex; gap: 1rem; }
.nav-links a { color: #fff; text-decoration: none; }
.nav-links a.active { border-bottom: 2px solid #64ffda; }

.hero {
  text-align: center; padding: 5rem 2rem;
  background: linear-gradient(135deg, #0a192f, #112240);
  color: #fff;
}

.btn {
  display: inline-block; margin-top: 1rem;
  padding: 0.75rem 1.5rem; background: #64ffda; color: #0a192f;
  text-decoration: none; border-radius: 4px;
}

.content { padding: 2rem; }

form { display: flex; flex-direction: column; gap: 1rem; max-width: 400px; }
input, textarea { padding: 0.5rem; border: 1px solid #ccc; border-radius: 4px; }

button {
  background: #0a192f; color: #fff; border: none;
  padding: 0.75rem; border-radius: 4px; cursor: pointer;
}

footer {
  text-align: center; padding: 1rem; background: #0a192f; color: #fff;
}