body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #fff;
}

.site-header {
  max-width: 950px;
  margin: 0 auto;
  padding: 30px 20px 15px;
  border-bottom: 1px solid #ddd;
}

.site-header h1 {
  margin: 0 0 12px;
  font-size: 32px;
  font-weight: 600;
}

nav a {
  margin-right: 22px;
  color: #0645ad;
  text-decoration: none;
  font-size: 17px;
}

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

.container {
  max-width: 950px;
  margin: 0 auto;
  padding: 30px 20px;
}

.intro {
  display: flex;
  gap: 35px;
  align-items: flex-start;
}

.profile-photo {
  width: 230px;
  max-width: 100%;
  border-radius: 4px;
}

.bio {
  flex: 1;
  font-size: 17px;
}

.news {
  margin-top: 35px;
}

.news h2,
.container h2 {
  font-size: 24px;
  border-bottom: 1px solid #ddd;
  padding-bottom: 6px;
}

.paper {
  margin-bottom: 28px;
}

.paper h3 {
  margin-bottom: 5px;
}

a {
  color: #0645ad;
}

@media (max-width: 700px) {
  .intro {
    flex-direction: column;
  }

  .profile-photo {
    width: 200px;
  }
}