.header {
  position: fixed;
  width: 100%;
  height: 11.97vw;
  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: 5.2vw;
  background-color: #0077d3;
  display: flex;
  align-items: center;
}
.header-nav-cont {
  width: 88.54vw;
  margin: 0 auto;
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-item-a {
  display: block;
  text-align: center;
  color: #fff;
  font-size: 1.35vw;
  font-weight: bold;
  cursor: pointer;
}

/* 有子菜单的父级菜单项鼠标样式为默认 */
.nav-item-with-dropdown .nav-item-a {
  cursor: default;
}

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

/* 为有下拉菜单的nav-item添加更大的触发区域 */
.nav-item-with-dropdown {
  position: relative;
}

.nav-item-with-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 0.52vw;
  background: transparent;
  z-index: 998;
}

/* 鼠标悬浮在 nav-item 上时显示 nav-child-a */
.nav-item:hover .nav-child-a {
  display: flex;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* 为下拉菜单添加延迟隐藏效果，防止鼠标移动时意外关闭 */
.nav-item-with-dropdown:hover .nav-child-a {
  display: flex;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* 当鼠标在下拉菜单内时保持显示 */
.nav-child-a:hover {
  display: flex;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.nav-child-a {
  display: none;
  flex-direction: column;
  position: absolute;
  top: calc(100% + 0.52vw);
  left: 50%;
  transform: translateX(-50%);
  padding: 0;
  background-color: rgba(255, 255, 255, 0.98);
  width: max-content;
  min-width: 10vw;
  z-index: 999;
  white-space: nowrap;
  border-radius: 0.52vw;
  box-shadow: 0 0.52vw 1.04vw rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 119, 211, 0.1);
  opacity: 0;
  transform: translateX(-50%) translateY(-0.52vw);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  overflow: hidden;
}
.nav-inner-a {
  font-size: 0.94vw;
  color: #0077d3;
  cursor: pointer;
  position: relative;
  padding: 0.78vw 1.82vw;
  display: block;
  width: 100%;
  text-align: center;
  border-bottom: 1px solid rgba(229, 229, 229, 0.3);
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
}
.nav-inner-a:last-child {
  border-bottom: none;
}
.nav-inner-a:first-child {
  border-top-left-radius: 0.52vw;
  border-top-right-radius: 0.52vw;
}
.nav-inner-a:last-child {
  border-bottom-left-radius: 0.52vw;
  border-bottom-right-radius: 0.52vw;
  border-bottom: none;
}
.nav-inner-a:hover {
  background-color: #f0f9ff;
  color: #005aa0;
}
.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;
}