body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #121212;
  background-color: white;
}
header {
  background-color: #171a24;
  padding: 2rem;
  text-align: center;
  border-bottom: 1px solid #333;
  color: #e0e0e0;
}
header img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 3px solid #444;
  margin-bottom: 1rem;
  object-fit: cover;
}
.contact{
  font-size: .9rem;
  
}
header a {
  color: #00aaff;
  text-decoration: none;
}

header a:hover {
  text-decoration: underline;
}

h1 {
  margin: 0.5rem 0;
  font-size: 2rem;
}
h2 {
  color: #002d51;
  border-bottom: 1px solid #333;
  padding-bottom: 0.5rem;
}
.section {
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}
.section p {
  line-height: 1.6;
}
ul {
  padding-left: 1.5rem;
}
li {
  margin-bottom: 0.5rem;
}
footer {
  text-align: center;
  padding: 1rem;
  background-color: #171a24;
  color: #888;
  border-top: 1px solid #333;
}

.publication a {
  text-decoration: none;
}

@media (max-width: 600px) {
  header img {
    width: 80px;
    height: 80px;
  }
  .section {
    padding: 1rem;
    font-size: .8rem;
  }
  h1 {
    margin: 0.5rem 0;
    font-size: 1rem;
  }
  h2 {
    font-size: 1rem;
  }
  header p {
    font-size: 0.6rem;
  }

  footer {
    font-size: 0.6rem;
  }
  
}