* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }
  
  body {
    background-color: #f9f8f6;
    color: #333;
    line-height: 1.6;
  }
  
  header {
    background-color: #4bec58;
    color: #fff;
    text-align: center;
    padding: 2rem 1rem;
  }
  
  header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
  }
  
  header .frase-inicial {
    font-style: italic;
    font-size: 1.2rem;
    margin-top: 0.5rem;
  }
  
  nav {
    background-color: #53f56e;
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1rem 0;
  }
  
  nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
  }
  
  nav a:hover {
    color: #ffeaa7;
    transform: scale(1.1);
  }
  
  main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
  }
  
  section h2 {
    font-size: 2rem;
    color: #58d638;
    margin-bottom: 1rem;
    border-bottom: 2px solid #4bec4b;
    display: inline-block;
    padding-bottom: 0.3rem;
  }
  
  #valores ul {
    list-style: square;
    padding-left: 1.5rem;
  }
  
  #valores li {
    margin-bottom: 0.8rem;
  }
  
  .contenedor-galeria {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1rem;
  }
  
  .tarjeta-obra {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 1rem;
    width: 280px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .tarjeta-obra:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  }
  
  .tarjeta-obra h3 {
    color: #ec4b4b;
    margin-bottom: 0.5rem;
  }
  
  .tarjeta-obra p {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
  }

  footer {
    background-color: #d63838;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
    font-size: 0.9rem;
  }