body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #0a192f, #172a45, #64ffda);
    color: #ffffff;
  }
  
  /* Header with logo and banner */
  header {
    position: relative;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    background: #0a192f;
    overflow: hidden;
  }
  
  header img.logo {
    height: 100%; /* logo matches header height */
    width: auto;
    margin-right: 10px;
    z-index: 2;
  }
  
  header img.banner {
    flex: 1;
    height: 100%;
    object-fit: cover;
  }
  
  /* Main content */
  main {
    text-align: center;
    padding: 60px 20px;
  }
  
  main p.tagline {
    font-size: 1.3rem;
    margin: 20px auto 40px auto;
    max-width: 700px;
    line-height: 1.6;
    color: #ffffff;
  }
  
  /* Links */
  .links a {
    text-decoration: none;
    color: #0a192f;
    background: #64ffda;
    padding: 10px 20px;
    margin: 5px;
    border-radius: 5px;
    transition: 0.3s;
    font-size: 1rem;
  }
  
  .links a:hover {
    background: #ffffff;
    color: #0a192f;
  }
  
  /* Footer */
  footer {
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
    color: #ffffff;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
  }