body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f8f9fa;
  color: #333;
}

.main-title {
    font-size: 3rem;
    color: #003b6f;
    text-align: center;
    margin: 50px 0 10px;
    font-weight: 700;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 1.5px;
    position: relative;
}
.main-title::after {
  content: '';
  display: block;
  width: 90px;
  height: 4px;
  background-color: #0077b6;
  margin: 10px auto 0;
  border-radius: 2px;
}

.diseno-web {
  display: flex;
  justify-content: center;
  padding: 40px 20px;
}

.contenido {
  max-width: 800px;
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  line-height: 1.7;
}

.foto-samuel {
  display: flex;
  justify-content: center;
  margin-bottom: 25px;
}

.foto-samuel img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%; /* foto circular */
  border: 3px solid #0077b6;
}

.contenido h2 {
  color: #0a5275;
  margin-top: 20px;
}

.contenido a {
  color: #0077b6;
  text-decoration: none;
}

.contenido a:hover {
  text-decoration: underline;
}