body {
      margin: 0;
      font-family: 'Segoe UI', sans-serif;
      background-color: #f4f8fc;
      color: #1a1a1a;
    }

    header {
      background: linear-gradient(90deg, #003366, #0055aa, #00aaff);
      color: white;
      padding: 1em;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo {
      height: 60px;
    }

    nav ul {
      list-style: none;
      display: flex;
      gap: 1em;
      margin: 0;
      padding: 0;
    }

    nav a {
      color: white;
      text-decoration: none;
      font-weight: bold;
    }

    nav a:hover {
      color: #00aaff;
      transition: 0.3s;
    }

    .hero {
      background: linear-gradient(to right, #003366, #0055aa);
      color: white;
      padding: 4em 2em;
      text-align: center;
    }

    .hero h1, .hero p {
      text-shadow: 1px 1px 4px rgba(0,0,0,0.6);
    }

    .btn {
      background-color: #00aaff;
      color: white;
      padding: 0.8em 1.5em;
      border: none;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      display: inline-block;
    }

    .btn:hover {
      background-color: #0088cc;
      transition: 0.3s;
    }

    .contenido {
      padding: 2em;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 1em;
    }

    .grid div {
      background: white;
      border-radius: 8px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
      padding: 1em;
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .grid div:hover {
      transform: translateY(-5px);
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    }

    footer {
      background: linear-gradient(to right, #003366, #0055aa);
      color: white;
      text-align: center;
      padding: 1em;
    }

    .fondo-transparente {
      background-color: transparent;
      mix-blend-mode: multiply;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
    }

   /* Logo corporativo con efecto flotante */
.logo-3d {
  object-fit: cover;
  border-radius: 50%;
  display: inline-block;
  filter: drop-shadow(0 0 6px rgba(0,0,0,0.3));
  animation: flotarLogo 6s ease-in-out infinite;
}

@keyframes flotarLogo {
  0%   { transform: translateY(0) rotateY(0deg); }
  50%  { transform: translateY(-8px) rotateY(5deg); }
  100% { transform: translateY(0) rotateY(0deg); }
}

/* Imagen hero con efecto flotante */
.img-3d {
  width: 300px;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 0 12px rgba(0,0,0,0.4));
  animation: flotarHero 6s ease-in-out infinite;
}

@keyframes flotarHero {
  0%   { transform: translateY(0) rotateX(0deg); }
  50%  { transform: translateY(-12px) rotateX(8deg); }
  100% { transform: translateY(0) rotateX(0deg); }
}