/* Hero */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  .hero {
    position: relative;
    width: 100%;
    height: 80vh; /* ocupa toda la altura de la pantalla */
    background-image: url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
  }
  
  .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45); /* capa oscura con leve tonalidad */
  }
  
  .content {
    position: relative;
    z-index: 2; /* para que quede por encima de la capa */
    max-width: 800px;
    padding: 20px;
  }
  
  .content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
  }
  
  .content p {
    font-size: 1.2rem;
    line-height: 1.6;
  }