body {
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(to bottom, #0b0f1a, #1a1f2e);
  color: #c7d3e2;
}

header {
  background-color: #0e1320;
  padding: 1rem 2rem;
  text-align: center;
  border-bottom: 2px solid #2e3a59;
}

nav a {
  color: #c7d3e2;
  margin: 0 1rem;
  text-decoration: none;
  font-weight: bold;
}

.article {
  background-color: #141925;
  border-left: 4px solid #00ccff;
  padding: 1rem;
  margin: 2rem auto;
  max-width: 800px;
  box-shadow: 0 0 10px rgba(0, 204, 255, 0.1);
}

.article h2 {
  margin-top: 0;
  color: #00ccff;
}