body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #f9f9f9;
    color: #333;
  }
  
  header {
    background: #0a0a23;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
  }
  
  nav a {
    color: white;
    text-decoration: none;
  }
  
  .hero {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(#1a1a3a, #2a2a5a);
    color: white;
  }
  
  .products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
  }