body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f7f9fb;
    color: #333;
  }
  
  header {
    background-color: #000;
    padding: 1rem 0;
    color: white;
  }
  
  nav.menuPrincipal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
  }
  
  nav.menuPrincipal .logo {
    font-size: 1.5rem;
    font-weight: bold;
  }
  
  nav.menuPrincipal ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
  }
  
  nav.menuPrincipal li {
    margin-left: 1.5rem;
  }
  
  nav.menuPrincipal a {
    color: white;
    text-decoration: none;
    font-weight: bold;
  }
  
  .hero {
    padding: 4rem 2rem;
    text-align: center;
    background: white;
  }
  
  .hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #0053a0;
  }
  
  .hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem auto;
  }
  
  .btn-principal {
    background-color: #0053a0;
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
  }
  
  .rates {
    padding: 2rem 1rem;
    background-color: #eef4f8;
    text-align: center;
  }
  
  .rates h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #0053a0;
  }
  
  .rate-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
  }
  
  .rate-box {
    background-color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    width: 250px;
  }
  
  .rate-box h3 {
    margin-bottom: 0.5rem;
    color: #333;
  }
  
  footer {
    background-color: #222;
    color: #ccc;
    padding: 2rem 1rem;
    text-align: center;
    font-size: 0.9rem;
  }
  
  footer a {
    color: #ccc;
    text-decoration: underline;
  }