.product #banner {
  position: relative;
}
.product #banner .bc_characteristic {
  display: none;
}
.product #banner .watch_icon {
  position: absolute;
  width: 174px;
  left: 50%;
  bottom: 10%;
  transform: translateX(-50%);
  cursor: pointer;
}
.product .main_box {
  background-color: #000;
  overflow: hidden;
}
.product .main_box .layui-container {
  width: 100%;
  color: #ffffff;
  padding: 0;
}
.product .main_box ul {
  height: 114px;
  font-size: 24px;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 0px;
}
.product .main_box ul li {
  line-height: 114px;
  text-align: center;
  cursor: pointer;
  color: #707070;
}
.product .main_box ul li span {
  display: inline-block;
  width: 29px;
  height: 29px;
  margin-right: 18px;
  vertical-align: middle;
  background-size: 100% 100%;
}
.product .main_box ul li .select_main {
  background-image: url('../img/product/select_main_icon.png');
}
.product .main_box ul li .no_select_main {
  background-image: url('../img/product/main_icon.png');
}
.product .main_box ul li .select_characteristic {
  background-image: url('../img/product/select_characteristic_icon.png');
}
.product .main_box ul li .no_select_characteristic {
  background-image: url('../img/product/characteristic_icon.png');
}
.product .main_box ul .select_tab {
  color: #ffffff;
}
.product .main_box .tab_main .main_item {
  width: 100%;
  position: relative;
}
.product .main_box .tab_main .main_item .bc_img {
  width: 100%;
  max-height: 1070px;
}
.product .main_box .tab_main .main_item .virtual_scene_left {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
}
.product .main_box .tab_main .main_item .virtual_scene_left img {
  width: 197px;
  height: 394px;
  transform: rotate(180deg);
  transform-origin: 0% 50%;
  -ms-transform: rotate(180deg);
  -webkit-transform: rotate(180deg);
}
@keyframes myrotate {
  from {
    transform: rotate(180deg);
    transform-origin: 0% 50%;
    -ms-transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
  }
  to {
    transform: rotate(360deg);
    transform-origin: 0% 50%;
    -ms-transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
  }
}
.product .main_box .tab_main .main_item .virtual_scene_left .rotate180 {
  animation: myrotate 1s linear 0s 1 normal;
  animation-fill-mode: forwards;
}
.product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text {
  font-weight: normal;
  font-stretch: normal;
  color: #ffffff;
  margin-left: 20px;
}
.product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .title {
  font-size: 36px;
  line-height: 1;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .Subtitle {
  font-size: 18px;
  line-height: 1;
  margin-bottom: 26px;
  cursor: pointer;
  width: 413px;
  font-weight: 400;
  line-height: 24px;
  text-align: justify;
  text-justify: inter-ideograph;
}
.product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .more {
  font-size: 24px;
}
.product .main_box .tab_main .main_item .item_right {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
}
.product .main_box .tab_main .main_item .item_right img {
  width: 197px;
  height: 394px;
  transform: rotate(180deg);
  transform-origin: 100% 50%;
  -ms-transform: rotate(180deg);
  -webkit-transform: rotate(180deg);
}
@keyframes rotateRight {
  from {
    transform: rotate(180deg);
    transform-origin: 100% 50%;
    -ms-transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
  }
  to {
    transform: rotate(0deg);
    transform-origin: 100% 50%;
    -ms-transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
  }
}
.product .main_box .tab_main .main_item .item_right .rotate180Right {
  animation: rotateRight 1s linear 0s 1 normal;
  animation-fill-mode: forwards;
}
.product .main_box .tab_main .main_item .item_right .virtual_scene_text {
  font-weight: normal;
  font-stretch: normal;
  color: #ffffff;
  text-align: right;
  margin-right: 20px;
}
.product .main_box .tab_main .main_item .item_right .virtual_scene_text .title {
  font-size: 36px;
  line-height: 1;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.product .main_box .tab_main .main_item .item_right .virtual_scene_text .Subtitle {
  font-size: 18px;
  line-height: 1;
  margin-bottom: 26px;
  cursor: pointer;
  width: 416px;
  font-weight: 400;
  line-height: 24px;
}
.product .main_box .tab_main .main_item .item_right .virtual_scene_text .more {
  font-size: 24px;
}
.product .main_box .tab_characteristic {
  display: none;
  margin-bottom: 40px;
}
.product .main_box .tab_characteristic .main_item {
  width: 100%;
  position: relative;
}
.product .main_box .tab_characteristic .main_item .bc_img {
  width: 100%;
  max-height: 1070px;
}
.product .main_box .tab_characteristic .main_item .characteristic_text {
  width: 100%;
  position: absolute;
  bottom: 0px;
  left: 50%;
  transform: translateX(-50%);
  color: #ffffff;
}
.product .main_box .tab_characteristic .main_item .characteristic_text .watch_icon {
  position: relative;
  width: 174px;
  left: 50%;
  margin-bottom: 30px;
  transform: translateX(-50%);
  cursor: pointer;
}
.product .main_box .tab_characteristic .main_item .characteristic_text .title {
  font-size: 48px;
  font-weight: bold;
  line-height: 55px;
  text-align: center;
  margin-bottom: 38px;
}
.product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
  text-align: justify;
  text-justify: inter-ideograph;
  font-size: 18px;
  font-weight: 400;
  line-height: 32px;
  width: 972px;
  margin: 0 auto;
  cursor: pointer;
}
@media screen and (max-width: 480px) {
  .product .main_box ul {
    font-size: 16px;
  }
  .product .main_box ul li span {
    width: 20px;
    height: 20px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left img,
  .product .main_box .tab_main .main_item .item_right img {
    width: 48px;
    height: 98px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .title,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .title {
    font-size: 20px;
    line-height: 24px;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .Subtitle,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .Subtitle {
    width: 248px;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 16px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .more,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .more {
    font-size: 18px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text {
    position: relative;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .title {
    margin-bottom: 10px;
    font-size: 18px;
    line-height: 18px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
    width: 80%;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 10px;
  }
  .product #banner .watch_icon,
  .product .main_box .tab_characteristic .main_item .characteristic_text .watch_icon {
    width: 120px;
  }
}
@media screen and (min-width: 480px) and (max-width: 768px) {
  .product .main_box ul {
    font-size: 16px;
  }
  .product .main_box ul li span {
    width: 20px;
    height: 20px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left img,
  .product .main_box .tab_main .main_item .item_right img {
    width: 98px;
    height: 197px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .title,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .title {
    font-size: 22px;
    line-height: 24px;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .Subtitle,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .Subtitle {
    font-size: 14px;
    line-height: 18px;
    margin-bottom: 26px;
    width: 306px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .more,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .more {
    font-size: 20px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text {
    position: relative;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .title {
    margin-bottom: 10px;
    font-size: 18px;
    line-height: 18px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
    width: 80%;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 10px;
  }
  .product #banner .watch_icon,
  .product .main_box .tab_characteristic .main_item .characteristic_text .watch_icon {
    width: 120px;
  }
}
@media screen and (min-width: 768px) and (max-width: 992px) {
  .product .main_box ul {
    font-size: 16px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left img,
  .product .main_box .tab_main .main_item .item_right img {
    width: 98px;
    height: 197px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .title,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .title {
    font-size: 24px;
    line-height: 24px;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .Subtitle,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .Subtitle {
    font-size: 18px;
    line-height: 22px;
    margin-bottom: 26px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .more,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .more {
    font-size: 20px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text {
    position: relative;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .title {
    margin-bottom: 10px;
    font-size: 28px;
    line-height: 28px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
    width: 80%;
    font-size: 16px;
    line-height: 16px;
    margin-bottom: 10px;
  }
}
/*大屏幕*/
@media screen and (min-width: 992px) and (max-width: 1200px) {
  .product .main_box .tab_main .main_item .virtual_scene_left img,
  .product .main_box .tab_main .main_item .item_right img {
    width: 98px;
    height: 197px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .title,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .title {
    font-size: 26px;
    line-height: 26px;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .Subtitle,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .Subtitle {
    font-size: 18px;
    line-height: 20px;
    margin-bottom: 26px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text {
    position: relative;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .title {
    font-size: 38px;
    line-height: 38px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
    font-size: 20px;
    line-height: 24px;
    width: 80%;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .more,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .more {
    font-size: 22px;
  }
}
/*超大屏幕*/
@media screen and (min-width: 1200px) and (max-width: 1300px) {
  .product .main_box ul {
    font-size: 24px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left img,
  .product .main_box .tab_main .main_item .item_right img {
    width: 197px;
    height: 394px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .title,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .title {
    font-size: 36px;
    line-height: 48px;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }
  .product .main_box .tab_main .main_item .virtual_scene_left .virtual_scene_text .Subtitle,
  .product .main_box .tab_main .main_item .item_right .virtual_scene_text .Subtitle {
    font-size: 18px;
    line-height: 24px;
    margin-bottom: 26px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text {
    position: relative;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .title {
    margin-bottom: 40px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
    font-size: 18px;
    margin-bottom: 16px;
  }
}
@media screen and (min-width: 1300px) {
  .product .main_box .tab_characteristic .main_item .characteristic_text {
    position: absolute;
    margin-top: 0;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .title {
    margin-bottom: 16px;
  }
  .product .main_box .tab_characteristic .main_item .characteristic_text .Subtitle {
    font-size: 18px;
  }
}