body {
    font-family: 'Segoe UI', sans-serif;
    line-height: 1.6;
    margin: 0;
    background: #f4f4f9;
    color: #333;
  }
  
  header {
    background: #0d47a1;
    color: white;
    padding: 2rem 1rem;
    text-align: center;
  }
  
  header .tagline {
    font-size: 1.2rem;
    margin-top: 0.5rem;
  }
  
  main {
    padding: 2rem 1rem;
    max-width: 800px;
    margin: auto;
  }
  
  h2 {
    color: #0d47a1;
  }
  
  ul {
    padding-left: 1.2rem;
  }
  
  button {
    background: #0d47a1;
    color: white;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  button:hover {
    background: #1565c0;
  }
  
  footer {
    text-align: center;
    padding: 1rem;
    background: #e3e3e3;
    font-size: 0.9rem;
    margin-top: 2rem;
  }

  .download-button {
    display: inline-block;
    background-color: #ff5722; /* vivid orange */
    color: white;
    padding: 0.75em 1.5em;
    font-size: 1.2em;
    font-weight: bold;
    text-decoration: none;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease;
  }
  
  .download-button:hover {
    background-color: #e64a19;
  }