.navbar-nav .nav-link.active, .navbar-nav .nav-link:hover {     
	color: #8d8d8d;
}
.nav-link {
  color: #aaa; /* 淡灰色 */
  transition: color 0.3s ease;
  font-size: 20px;
  padding: 10px 20px;
}

.nav-link:hover {
  color: #555; /* 滑鼠移上去時變深灰 */
}

.nav-link.active {
  color: #444; /* 點選後保持深灰 */
}