.header {
  position: fixed;
  width: 100%;
  height: 13.02vw;
  left: 0;
  top: 0;
  background-color: #fff;
  z-index: 998;
}
.header-cont1 {
  width: 88.54vw;
  margin: 0 auto;
  height: 6.77vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-img {
  display: block;
  width: 25vw;
  /* height: 5.21vw; */
}
.right-opera-cont {
  display: flex;
  align-items: center;
}
.right-opera-cont .el-input__inner {
  border-color: #0077d3;
  /* height: 3.13vw;
  line-height: 3.13vw; */
}
.right-opera-cont .el-input-group__append {
  border-color: #0077d3;
  background-color: #0077d3;
  /* height: 3.13vw; */
}
.right-opera-cont .el-icon-search {
  color: #fff;
  font-size: 1.25vw;
}
.right-opera-cont .link-to-login-a {
  display: block;
  padding: 0 0.52vw;
  height: 2.08vw;
  border-radius: 0.26vw;
  line-height: 2.08vw;
  text-align: center;
  cursor: pointer;
  background: linear-gradient(130deg, #0077d3 19%, #0090ff 78%);
  color: #fff;
  font-size: 0.94vw;
  white-space: nowrap;
  margin: 0 0 0 3.13vw;
}
.header-cont2 {
  height: 6.25vw;
  background-color: #0077d3;
}
.header-nav-cont {
  width: 88.54vw;
  margin: 0 auto;
  position: relative;
  padding: 1.41vw 0 0;
  display: flex;
  justify-content: space-between;
}
.nav-item-a {
  display: block;
  text-align: center;
  color: #fff;
  font-size: 1.67vw;
  cursor: pointer;
}

/* 添加 nav-item 的相对定位和悬浮效果 */
.nav-item {
  position: relative;
}

/* 鼠标悬浮在 nav-item-a 上时显示 nav-child-a */
.nav-item:hover .nav-child-a {
  opacity: 1;
  visibility: visible;
}
.nav-child-a {
  display: flex; /* 始终保持 flex 布局 */
  position: absolute; /* 固定位置，不影响其他元素 */
  top: 100%; /* 位于父元素下方 */
  left: 50%; /* 水平居中定位 */
  transform: translateX(-50%); /* 水平居中偏移 */
  padding: 0 0.42vw;
  background-color: rgba(255, 255, 255, 0.9);
  margin-top: 0.26vw;
  align-items: center;
  height: 1.15vw;
  z-index: 999; /* 确保在顶层显示 */
  white-space: nowrap; /* 防止换行 */
  opacity: 0; /* 默认透明 */
  visibility: hidden; /* 默认不可见 */
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease; /* 添加平滑动画 */
}
.nav-inner-a {
  font-size: 0.94vw; /* 原来是 0.63vw，调大两个字号 */
  color: #0077d3;
  cursor: pointer;
  position: relative;
}
.nav-inner-a:not(:last-of-type) {
  margin-right: 0.52vw;
}
.nav-inner-a:not(:last-of-type)::after {
  content: '';
  display: block;
  width: 1px;
  height: 80%;
  background-color: #0077d3;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: -0.26vw;
}
.right-opera-cont .el-input-group{
  width: 15.4vw;
}
.right-opera-cont .el-input__inner{
  height:2.1vw;
  line-height: 2.1vw;
  font-size: 0.83vw;
  padding: 0 0.87vw;
}
.right-opera-cont .el-input-group__append .el-button{
  height:2.1vw;
  padding: 0.625vw 1.04vw;
  margin: 0;
  padding: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  line-height: 0;
  transform: translate(-50%, -50%);
}
.right-opera-cont .el-input-group__append {
  padding: 0 1.04vw;
  width: 3.25vw;
  height: 2.1vw;
  position: relative;
}