body {
      font-family: 'Segoe UI', sans-serif;
      margin: 0;
      padding: 0;
      background: #f4f7f9;
      color: #333;
      line-height: 1.6;
    }

    header {
      background: #f6f8f8;
      color: white;
      padding: 10px 0px;
      text-align: center;
    }

    nav {
      background: #2c3e50;
      text-align: center;
      padding: 10px 0;
    }

    nav a {
      color: white;
      text-decoration: none;
      margin: 8px;
      display: inline-block;
      font-weight: bold;
      font-size: 16px;
    }

    .hero {
  position: relative;
  background-image: url('../img/test.jpg');
  background-size: cover;
  background-position: center;
  padding: 90px 10px;
  color: white;
  text-align: center;
  z-index: 1;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.5); /* Negro con 50% de opacidad */
  z-index: -1;
}

    section {
      max-width: 90%;
      margin: auto;
      padding: 15px 20px;
    }

    .highlight {
      background: white;
      padding: 10px;
      border-radius: 8px;
      box-shadow: 0 0 10px rgba(0,0,0,0.08);
      margin-bottom: 30px;
    }
    .content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 10px;
}

/* Responsive: una sola columna en móviles */
@media (max-width: 768px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}


    img.responsive {
      width: 100%;
      height: auto;
      border-radius: 8px;
      margin-top: 15px;
    }

    footer {
      background: #2c3e50;
      color: white;
      text-align: center;
      padding: 20px;
      font-size: 14px;
    }

    @media (max-width: 600px) {
      header h1, .hero h1 {
        font-size: 24px;
      }

      nav a {
        margin: 8px;
        font-size: 14px;
      }

      section {
        padding: 15px 15px;
      }

      .highlight {
        padding: 20px;
      }
    }

    .content-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
  }

  .content-grid > div {
    flex: 1 1 45%;
  }

  .pdf-card {
    background: #ecf0f1;
    border-left: 5px solid #2c3e50;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
  }

  .pdf-card h3 {
    margin: 0 0 10px;
    font-size: 18px;
    color: #2c3e50;
  }

  .pdf-button {
    display: inline-block;
    padding: 10px 15px;
    background: #1abc9c;
    color: white;
    border-radius: 5px;
    text-decoration: none;
    margin-top: 10px;
    font-weight: bold;
  }

  .pdf-button:hover {
    background: #16a085;
  }

  @media (max-width: 768px) {
    .content-grid {
      flex-direction: column;
    }
  }