.core-header {
  height: 43.0208vw;
  background-image: url(/assets/img/skin1/skin.png);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}

.category {
  background: #f4f5f7;
}

.category .swiper {
  height: 64px;
  --swiper-navigation-color: #000;
  --swiper-navigation-size: 18px;
}

.category .swiper .swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.category .swiper .swiper-slide.active {
  background: linear-gradient(to right, #0071BC, #0071BC);
  background-size: 14.5833vw 2px;
  background-repeat: no-repeat;
  background-position: center bottom;
}

.core .list {
  margin-top: 2.7604vw;
  display: flex;
  flex-wrap: wrap;
  gap: 2.2396vw 5%;
}

.core .list .item {
  width: 30%;
}

.core .list .item .img {
  overflow: hidden;
}

.core .list .item .img img {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.core .list .item .name {
  padding: 1.5625vw 0 0.7813vw;
  font-size: 27px;
  color: #071221;
}

.core .list .item .props {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.core .list .item .props .time {
  font-family: Microsoft YaHei;
  font-weight: 400;
  font-size: 17px;
  color: #0071bc;
}

.core .list .item .props .preview-download {
  display: flex;
  align-items: center;
  gap: 12px;
}

.core .list .item .props a {
  display: flex;
  align-items: center;
  font-family: Microsoft YaHei;
  font-size: 15px;
  color: #727272;
}

.core .list .item .props a:hover {
  color: #0071bc;
}

.core .list .item .props .btn-preview::before {
  margin-right: 4px;
  content: "";
  width: 13px;
  height: 11px;
  background-image: url(/assets/img/icon-preview.png);
  background-size: 13px 11px;
  background-repeat: no-repeat;
  background-position: center center;
}

.core .list .item .props .btn-preview:hover::before {
  background-image: url(/assets/img/icon-preview-active.png);
}

.core .list .item .props .btn-download::before {
  margin-right: 4px;
  content: "";
  width: 11px;
  height: 12px;
  background-image: url(/assets/img/icon-download.png);
  background-size: 11px 12px;
  background-repeat: no-repeat;
  background-position: center center;
}

.core .list .item .props .btn-download:hover::before {
  background-image: url(/assets/img/icon-download-active.png);
}
