.header {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.166667vw;
  padding: 0 16.666667vw;
  background-color: #fff;
  transition: transform .2s
}
.header.sticky {
  position: fixed;
  top: -4.166667vw;
  transform: translateY(4.166667vw);
  z-index: 999;
  width: 100%;
  box-shadow: 0 0 10px rgba(0, 0, 0, .1);
}

.logo-link {
  font-size: 0;
}
.logo {
  flex-shrink: 0;
  width: 13.281250vw;
  height: 1.354167vw;
}

.nav-header {
  height: 100%;
}

.nav-list {
  display: flex;
  height: 100%;
}

.nav-item:not(:last-child) {
  margin-right: 3.125vw;
}

.nav-item-label {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  cursor: pointer;
}
.nav-item-label::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3.75vw;
  height: 0.15625vw;
  background-color: #ffc000;
  visibility: hidden;
  opacity: 0;
}

.nav-item .nav-header-link {
  font-size: 0.9375vw;
  font-weight: bold;
  color: #555;
}
.nav-item:hover .nav-header-link,
.nav-item.nav-item-active .nav-header-link {
  color: #016dbf;
}

.nav-menu-collapse-product {
  position: absolute;
  top: 4.166667vw;
  left: 0;
  z-index: 100;
  width: 100%;
  height: 20.833333vw;
  padding: 0 16.666667vw;
  border: 1px solid #ededed;
  border-top: 1px solid #dbdbdb;
  background-color: #fff;
  visibility: hidden;
  opacity: 0;
}
.nav-menu-product-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  height: 100%;
  padding: 1.770833vw 0 1.875vw;
}
.nav-menu-product-item {
  flex-basis: 20%;
}
.nav-menu-product-link {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  justify-content: center;
  align-items: center;
  min-height: 6.770833vw;
  font-size: 0.833333vw;
  color: #666;
  cursor: pointer;
  line-height: 1;
}
.nav-menu-product-link:hover {
  color: #016dbf;
}
.nav-menu-product-item:hover .nav-menu-product-img {
  transform: scale(1.05);
}
.nav-menu-product-img {
  max-width: 80%;
  height: 4.895833vw;
  margin-bottom: 0.833333vw;
  object-fit: contain;
  transition: all .3s ease-in-out;
}

.nav-menu-collapse {
  position: absolute;
  top: 4.166667vw;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: 10.416667vw;
  padding: 0.9375vw 0;
  border: 1px solid #ededed;
  border-top: 1px solid #dbdbdb;
  background-color: #fff;
  visibility: hidden;
  opacity: 0;
}
.nav-menu-item {
  display: flex;
  justify-content: center;
  align-items: center;
}
.nav-menu-link {
  font-size: 0.833333vw;
  line-height: 2.375;
  color: #666;
  text-align: center;
}
.nav-menu-item:hover .nav-menu-link {
  color: #016dbf;
}

.nav-item:hover .nav-menu-collapse-product,
.nav-item:hover .nav-menu-collapse,
.nav-item:hover .nav-item-label::after {
  visibility: visible;
  opacity: 1;
  transition: all .25s ease-out;
}
.nav-item.nav-item-active .nav-item-label::after {
  visibility: visible;
  opacity: 1;
}