.header {
  padding: 18px 0;
  position: fixed;
  height:100px;
  top: 0;
  width: 100vw;
  z-index: 999;
  background: #fff;
  display: block;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  
}
.jianfu-logo {
  width: 190px;
}
a:hover {
  text-decoration: none;
}
.menu-item {
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
  margin-right: 80px;
  color: #333;
  position: relative;
  height: 100%;
  display: flex;
  align-items: end;
}
.menu-item:last-child {
  margin-right: 0;
}
.active-menu {
  color: var(--primary-color) !important;
}
.line {
  display: none;
  position: absolute;
  width: 100%;
  bottom: -16px;
  height: 4px;
  background: var(--primary-color);
  z-index: 999;
}
.contact-icon {
  width: 20px;
  height: 20px;
  margin-right: 10px;
}
.active-header {
  background: #fff;
  display: block;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}
.active-header .menu-item {
  color: #333;
}

/* 下拉菜单 */
.menu-item-dropdown {
  position: relative;
}
.menu-item-dropdown > a {
  color: inherit;
  height: 100%;
  display: flex;
  align-items: flex-end;
}
.dropdown-menu-custom {
  display: none;
  position: fixed;
  top: 100px;
  left: 0;
  width: 100vw;
  background: #fff;
  z-index: 998;
  padding: 18px 0;
  border-top: 1px solid #eee;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}
.dropdown-menu-custom::before {
  content: "";
  position: absolute;
  top: -28px;
  left: 0;
  width: 100%;
  height: 28px;
}
.dropdown-menu-custom-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 80px;
}
.dropdown-menu-item {
  font-size: 15px;
  color: #333;
  white-space: nowrap;
  padding: 4px 0;
}
.dropdown-menu-item:hover {
  color: var(--primary-color);
  text-decoration: none;
}