.slideshow {
    height: 100%;
    object-fit: cover;
}
.card:hover {
  transform: scale(1.05); /* 放大效果 */
  box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23); /* 阴影效果 */
  transition: transform 0.3s ease, box-shadow 0.3s ease; /* 平滑过渡 */
}
.card {
  background: #F1F3FF; /* 渐变背景 */
  border: none; /* 无边框 */
  border-radius: 10px; /* 圆角 */
}
.card {
  will-change: transform; /* 提高动画性能 */
}
.card:hover {
  animation: bounce 1s; /* 应用动画 */
}


.navbar-nav .nav-link {
  transition: color 0.3s ease;
  font-size:16px;
  font-weight: bold;
    padding-bottom: 9px;
   

}
 
.navbar-nav .nav-link:hover {
  color: #48C2F9 !important; /* 改变颜色 */
  
   border-bottom: 2px solid #48C2F9;
}


@keyframes slideIn {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}
 
.navbar-nav .nav-item {
  animation: slideIn 0.5s ease forwards;
}


@keyframes slideIn {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}
 
.navbar-nav .nav-item:nth-child(1) { animation-delay: 0s; }
.navbar-nav .nav-item:nth-child(2) { animation-delay: 0.1s; }
.navbar-nav .nav-item:nth-child(3) { animation-delay: 0.2s; }