.papers-container {
  max-width: 900px;
  margin: auto;
  padding: 60px 40px;
}

.papers-intro {
  margin-bottom: 40px;
  color: #555;
}

.paper-card {
  background: #f7f4ff;
  padding: 25px;
  border-radius: 10px;
  transition: 0.3s;
}

.paper-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.paper-links a {
  color: #6c63ff;
  font-weight: 500;
  margin-right: 20px;
}

/* mobile */

@media (max-width: 768px) {
  .papers-container {
    padding: 40px 20px;
  }
}