body {
  font-family: system-ui, sans-serif;
  margin: 0;
  background: #ffffff;
  color: #333;
  text-align: center;
}

header {
  padding: 2rem;
  background-color: #f8f9fa;
  border-bottom: 1px solid #ddd;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.author {
  font-size: 1.2rem;
  margin: 0.5rem 0;
}

.affiliation {
  font-style: italic;
  color: #555;
}

.note {
  color: #cc0000;
  font-weight: bold;
  margin-bottom: 1rem;
}

.buttons {
  margin-top: 1rem;
}

.button {
  display: inline-block;
  background-color: #333;
  color: white;
  text-decoration: none;
  padding: 0.6em 1.2em;
  margin: 0.3em;
  border-radius: 8px;
  transition: background-color 0.3s;
}

.button:hover {
  background-color: #555;
}

.description {
  padding: 2rem;
  max-width: 700px;
  margin: auto;
  line-height: 1.6;
}

.description a {
  color: #007bff;
  text-decoration: none;
}

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