body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f0f4f8, #d9e9ff);
    color: #333;
    text-align: center;
    margin: 0;
  }
  
  header {
    background-color: #333;
    padding: 1em;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);
  }
  
  .menu {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 1em;
  }
  
  .menu li {
    display: inline;
  }
  
  .menu a {
    text-decoration: none;
    color: white;
    padding: 0.7em 1.5em;
    background-color: #d40000;
    border-radius: 12px;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0px 4px 6px rgba(212, 85, 0, 0.3);
  }
  
  .menu a:hover {
    background-color: #a30000;
    transform: translateY(-3px);
    box-shadow: 0px 6px 10px rgba(0, 95, 163, 0.4);
  }
  
  main {
    padding: 3em;
    background: white;
    border-radius: 16px;
    max-width: 900px;
    margin: 2em auto;
    box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    font-size: 2.5em;
    color: #d40000;
    margin-bottom: 0.2em;
  }
  
  p {
    font-size: 1.2em;
    color: #666;
    line-height: 1.6;
  }