.pd_head h2 {
  font-weight: 600;
  font-size: 4rem;
  line-height: 1.2;
}
.product_preview {
  padding: 3.2rem 0 10.8rem;
}
.product_preview .breadcrumbs {
  font-weight: 500;
  font-size: 1.4rem;
  margin-bottom: 3.2rem;
}
.product_preview .breadcrumbs span span::after {
  content: '';
  display: inline-block;
  width: 1rem;
  height: 0.6rem;
  margin: 0 0.2rem 0 0.8rem;
  transform: translateY(-1px) rotate(-90deg);
  background: url(../img/icon-select.svg) no-repeat center / contain;
}
.product_preview .breadcrumbs span span:last-child::after {
  display: none;
}
.product_preview .breadcrumbs a {
  color: #aab0b9;
  transition: all 0.3s;
}
.product_preview .breadcrumbs a:hover {
  color: var(--primary);
}
.product_preview .lt {
  width: 48.897059%;
  position: sticky;
  top: 150px;
}
.product_preview .lt .btns {
  position: absolute;
  right: 2.6rem;
  bottom: 2rem;
  z-index: 2;
  gap: 1.2rem;
  display: flex;
}
.product_preview .lt .btns div {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  transition: all 0.3s;
  cursor: pointer;
  border: 2px solid #dcdee2;
}
.product_preview .lt .btns div::after {
  content: '';
  transition: all 0.3s;
  background: no-repeat center / contain;
}
.product_preview .lt .btns div:hover {
  border-color: var(--primary);
  background-color: var(--primary);
}
.product_preview .lt .btns div:hover::after {
  filter: contrast(0) brightness(2);
}
.product_preview .lt .btns .btn_video::after {
  width: 1rem;
  height: 1.2rem;
  background-image: url(../img/icon-video.svg);
}
.product_preview .lt .btns .btn_zoom::after {
  width: 2rem;
  height: 2rem;
  background-image: url(../img/icon-zoom.svg);
}
.product_preview .product_preview_swiper {
  position: relative;
  overflow: hidden;
  border-radius: 2rem;
  border: 1px solid #dcdee2;
  background: url(../img/pd-cir.svg) no-repeat center / cover;
}
.product_preview .product_preview_swiper .img {
  display: block;
  padding-bottom: 73.906486%;
}
.product_preview .product_preview_thumbs_swiper {
  overflow: hidden;
  border-radius: 0.8rem;
  margin-top: 3.6rem;
}
.product_preview .product_preview_thumbs_swiper .img {
  cursor: pointer;
  padding-bottom: 68.627451%;
  border-radius: 0.8rem;
  border: 1px solid #dcdee2;
}
.product_preview .rt {
  flex: 1;
  max-width: 59.4rem;
  margin-top: 0.7rem;
}
.product_preview .rt .btns {
  margin-top: 3.2rem;
  gap: 1.4rem;
  display: flex;
  flex-wrap: wrap;
}
.product_preview .cat {
  color: var(--primary);
  font-weight: 500;
  font-size: 1.4rem;
  text-transform: uppercase;
}
.product_preview h1 {
  font-weight: 600;
  font-size: 4.8rem;
  line-height: 1.25;
  margin-top: 0.8rem;
}
.product_preview .desc {
  color: var(--text);
  font-size: 1.8rem;
  line-height: 2.8rem;
  margin-top: 2.1rem;
}
.product_preview .attrs {
  margin-top: 2.4rem;
}
.product_preview .attrs ul {
  gap: 1.3rem 1.1rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}
.product_preview .attrs li {
  padding: 1.7rem 2.2rem;
  border-radius: 0.8rem;
  border: 1px solid #e8eaee;
  background-color: #f5f6f8;
}
.product_preview .attrs .title {
  color: #8a909a;
  font-weight: 500;
  font-size: 1.4rem;
  text-transform: uppercase;
}
.product_preview .attrs .value {
  font-weight: 500;
  font-size: 2rem;
  margin-top: 0.6rem;
}
.product_preview .hr {
  height: 1px;
  margin-top: 3rem;
  background-color: #e8eaee;
}
.product_preview .btn_download {
  gap: 1.6rem;
  display: inline-flex;
  align-items: center;
  vertical-align: top;
  font-weight: 600;
  font-size: 1.8rem;
  margin-top: 2.2rem;
  transition: all 0.3s;
}
.product_preview .btn_download::before {
  content: '';
  display: block;
  width: 1.8rem;
  height: 2.2rem;
  transition: all 0.3s;
  background: url(../img/icon-doc.svg) no-repeat center / contain;
}
.product_preview .btn_download:hover {
  color: var(--primary);
}
.product_preview .tags {
  margin-top: 1.6rem;
}
.product_preview .tags ul {
  gap: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}
.product_preview .tags li {
  gap: 1.6rem;
  display: flex;
  align-items: center;
  color: #5e646e;
  font-size: 1.5rem;
}
.product_preview .tags li::after {
  content: '';
  display: block;
  width: 1px;
  height: 1.6rem;
  background-color: #e8eaee;
}
.product_guide {
  padding: 12.4rem 0 14rem;
}
.product_guide .swiper_box {
  margin-top: 4rem;
}
.product_guide .product_guide_swiper {
  overflow: hidden;
  border-radius: 2.2rem;
}
.product_guide .product_guide_swiper .active .info::after {
  background-color: var(--primary);
}
.product_guide .product_guide_swiper .item {
  height: 100%;
  display: flex;
  flex-direction: column;
  border-radius: 2.2rem;
  border: 1px solid #e6e9ee;
}
.product_guide .product_guide_swiper .item:hover img {
  transform: scale(1.03);
}
.product_guide .product_guide_swiper .item:hover .info::after {
  transform: scale(1.1);
}
.product_guide .product_guide_swiper .img {
  margin: -1px -1px 0;
  border-radius: 2.2rem;
  padding-bottom: 54.740061%;
}
.product_guide .product_guide_swiper .info {
  flex: 1;
  position: relative;
  padding: 3.3rem 10.2rem 4rem 3.8rem;
}
.product_guide .product_guide_swiper .info .cat {
  color: var(--primary);
  font-weight: 500;
  font-size: 1.4rem;
  text-transform: uppercase;
}
.product_guide .product_guide_swiper .info .title {
  font-weight: 600;
  font-size: 2.264rem;
  line-height: 1.416519;
  margin-top: 1.4rem;
  max-width: 47rem;
}
.product_guide .product_guide_swiper .info::after {
  content: '';
  width: 4.2rem;
  height: 4.2rem;
  position: absolute;
  right: 3.1rem;
  bottom: 3.1rem;
  transition: all 0.3s;
  border-radius: 0.6rem;
  background: url(../img/arrow-l-r-w.svg) no-repeat center / 1.2rem var(--secondary);
}
.product_related {
  padding: 10rem 0 12rem;
}
.product_related .swiper_box {
  margin-top: 3rem;
}
.product_related .btn {
  margin-top: 4.8rem;
}
@media screen and (max-width: 768px) {
  .pd_head h2 {
    font-size: 26px;
  }
  .product_preview {
    padding: 30px 0 50px;
  }
  .product_preview .breadcrumbs {
    margin-bottom: 20px;
  }
  .product_preview .lt .btns {
    right: 15px;
    bottom: 15px;
  }
  .product_preview .lt .btns div {
    width: 44px;
    height: 44px;
    border-width: 1px;
  }
  .product_preview .product_preview_swiper {
    border-radius: 10px;
  }
  .product_preview .product_preview_thumbs_swiper {
    margin-top: 20px;
  }
  .product_preview .product_preview_thumbs_swiper .img {
    border-radius: 6px;
  }
  .product_preview .rt {
    margin: 0;
  }
  .product_preview .rt .btns {
    margin-top: 20px;
  }
  .product_preview h1 {
    font-size: 30px;
  }
  .product_preview .desc {
    margin-top: 12px;
    font-size: 14px;
    line-height: 1.5;
  }
  .product_preview .attrs {
    margin-top: 12px;
  }
  .product_preview .attrs ul {
    gap: 10px;
  }
  .product_preview .attrs li {
    padding: 15px;
  }
  .product_preview .attrs .title {
    font-size: 12px;
  }
  .product_preview .attrs .value {
    font-size: 16px;
  }
  .product_preview .btns {
    gap: 15px;
  }
  .product_preview .btns .btn,
  .product_preview .btns a {
    flex: auto;
  }
  .product_preview .hr {
    margin-top: 20px;
  }
  .product_preview .btn_download {
    gap: 10px;
    font-size: 14px;
  }
  .product_preview .tags ul {
    gap: 10px;
  }
  .product_preview .tags li {
    gap: 10px;
    font-size: 14px;
  }
  .product_preview .tags li::after {
    height: 14px;
  }
  .product_guide {
    overflow: hidden;
    padding: 50px 0;
  }
  .product_guide .swiper_box {
    margin-top: 30px;
  }
  .product_guide .product_guide_swiper {
    overflow: visible;
    border-radius: 10px;
  }
  .product_guide .product_guide_swiper .item {
    border-radius: 10px;
  }
  .product_guide .product_guide_swiper .img {
    border-radius: 10px;
  }
  .product_guide .product_guide_swiper .info {
    padding: 20px 84px 20px 20px;
  }
  .product_guide .product_guide_swiper .info .title {
    font-size: 16px;
  }
  .product_guide .product_guide_swiper .info::after {
    right: 20px;
    bottom: 20px;
    width: 44px;
    height: 44px;
  }
  .product_related {
    padding: 50px 0;
  }
  .product_related .swiper_box {
    margin-top: 20px;
  }
  .product_related .btn {
    margin-top: 20px;
  }
}
@media screen and (max-width: 576px) {
  .product_preview .flex {
    display: block;
  }
  .product_preview .lt {
    position: static;
    width: 100%;
    margin-bottom: 30px;
  }
  .product_guide .swiper_btns {
    display: none;
  }
  .product_related .swiper_btns {
    display: none;
  }
}