.site-footer {
  background-color: #2f2f2f; /* 浅黑背景 */
  padding: 20px 10px;
  text-align: center;
  font-size: 13px;
  color: #ccc;
}

.site-footer a {
  color: #999;
  text-decoration: none;
  margin: 0 5px;
}

.site-footer a:hover {
  color: #fff;
  text-decoration: underline;
}