/* 页脚 */
footer {
  background: #1a1a1a;
  color: #ddd;
  padding: 40px 20px 20px;
  margin-top: 50px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-section {
  flex: 1 1 30%;
  min-width: 250px;
}

.footer-section h4 {
  margin-bottom: 10px;
  color: #ffcc00;
}

.footer-bottom {
  text-align: center;
  margin-top: 30px;
  font-size: 14px;
  color: #888;
  border-top: 1px solid #444;
  padding-top: 15px;
}

.footer-icons {
  margin-top: 10px;
}

.footer-icons a {
  display: inline-block;
  margin-right: 15px;
  font-size: 20px;
  color: #fff; /* 或你想要的颜色 */
  text-decoration: none;
  transition: color 0.3s;
}

.footer-icons a:hover {
  color: #f0c040; /* hover 效果颜色 */
}