/* 案例部分样式优化 */
.case-filter {
  margin: 30px 0;
}

.case-filter ul {
  display: inline-block;
  margin: 0;
  padding: 0;
}

.case-filter li {
  display: inline-block;
  margin: 5px 5px;
}

.case-filter li a {
  display: inline-block;
  padding: 8px 15px;
  color: #333;
  border-radius: 3px;
  transition: all 0.3s ease;
}

.case-filter li.active a,
.case-filter li a:hover {
  color: #555;
  text-decoration: underline;
}

.case-container {
  margin-top: 30px;
}

.case-item {
  margin-bottom: 30px;
  transition: all 0.5s ease;
}

.case-box {
  background: #fff;
  overflow: hidden;
  transition: all 0.3s ease;
}

/* 添加图片容器样式，固定宽高比 */
.case-box .pic-link {
  display: block;
  position: relative;
  width: 100%;
  padding-bottom: 75%; /* 设置16:12或4:3的宽高比 */
  overflow: hidden;
}

/* 修改图片样式，保持比例 */
.case-box .pic-link img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

/* 修复原始样式问题 */
.case-box .case-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.case-box:hover .case-hover {
  opacity: 1;
}

.case-box .hover-link {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 24px;
}

/* 如果case-style.css文件中存在类似以下的浮动动画代码，请移除 */
.case-item:hover {
  /* 移除transform属性 */
  /* transform: translateY(-5px); */
  /* 移除过渡效果 */
  /* transition: all 0.3s ease; */
}

.case-box:hover {
  /* 移除阴影变化 */
  /* box-shadow: 0 10px 20px rgba(0,0,0,0.1); */
  /* 移除过渡效果 */
  /* transition: all 0.3s ease; */
}

.case-info {
  padding: 15px;
  text-align: left;
}

.case-info h3 {
  margin-top: 0;
  font-size: 16px;
}

.case-info small {
  color: #888;
}

.more-btn {
  margin-top: 20px;
}

/* 动画效果 */
.wow {
  visibility: hidden;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 30px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.fadeInUp {
  animation-name: fadeInUp;
}