body {
    margin: 0;
    font-family: "Poppins", sans-serif;
    color: white;
    background: linear-gradient(to bottom, #071a3a, #1b4d8a);
    text-align: center;
  }
  
  /* Hero principal */
  .hero {
    padding: 6rem 1rem 4rem;
  }
  .hero h1 {
    font-size: 4rem;
    letter-spacing: 2px;
    margin: 0;
  }
  .hero h2 {
    font-weight: 400;
    margin-top: 0.5rem;
  }
  .hero p {
    font-style: italic;
    color: #b5d4ff;
    margin-top: 1.5rem;
  }
  .buttons {
    margin-top: 2rem;
  }
  .btn {
    display: inline-block;
    padding: 0.9rem 1.6rem;
    border-radius: 2rem;
    background-color: #0d3e7b;
    color: white;
    text-decoration: none;
    margin: 0.5rem;
    transition: 0.3s;
  }
  .btn:hover {
    background-color: #ff8a00;
  }
  .secondary {
    background-color: #0b264e;
  }
  
  /* Ecosistema */
  .ecosistema {
    padding: 4rem 1rem;
  }
  .cards {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
  }
  .card {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 1rem;
    width: 280px;
    padding: 1.5rem;
  }
  .card img {
    width: 100%;
    border-radius: 0.8rem;
  }
  .card .btn.small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  .tag {
    background-color: #333;
    padding: 0.4rem 1rem;
    border-radius: 1rem;
    font-size: 0.85rem;
  }
  
  /* Footer */
  footer {
    background-color: #0b264e;
    padding: 2rem;
  }
  footer input {
    padding: 0.8rem;
    border-radius: 1.5rem;
    border: none;
    width: 220px;
    margin-right: 0.5rem;
  }
  footer button {
    background-color: #ff8a00;
    border: none;
    border-radius: 1.5rem;
    padding: 0.8rem 1.5rem;
    color: white;
    cursor: pointer;
  }
  /* Topbar */
.topbar{
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem 0;
    display: flex; justify-content: space-between; align-items: center;
  }
  .brand{ display:flex; align-items:center; gap:.6rem; text-decoration:none; color:#fff; }
  .brand img{ height:28px; width:auto; display:block; }
  .brand span{ font-weight:700; letter-spacing:.5px; }
  
  .main-nav a{
    color:#fff; text-decoration:none; margin-left:1.2rem; font-weight:500;
  }
  .main-nav a:hover{ color:#ff8a00; }
  
  /* separa el hero del header */
  .hero{ padding-top: 6.5rem; }