footer {
  text-align: center;
  padding: 3rem 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.3), transparent);
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
footer p {
  max-width: 600px;
  margin: 0.5rem auto;
  line-height: 1.6;
}
footer p a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
footer p a .beian-icon {
  width: 1.2em;
  height: 1.2em;
  margin-right: 0.3em;
  color: currentColor;
}
footer p a:hover {
  color: #e74c3c;
}