.productshow-banner {
  background: url(../images/product_banner.jpg) center no-repeat;
  height: 350px;
}
.productshow-banner .gm {
  height: inherit;
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
}
.productshow-banner h2 {
  font-size: 40px;
  font-family: "SourceHanSansCN-Bold";
  margin-bottom: 15px;
}
.productshow-banner span {
  font-size: 20px;
  font-family: "SourceHanSansCN-Regular";
  text-transform: uppercase;
}
.productshow-menu {
  margin-top: -20px;
}
.productshow-menu > ul {
  height: 80px;
  width: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #56aab7;
}
.productshow-menu > ul > li {
  width: 25%;
  text-align: center;
}
.productshow-menu > ul > li > a {
  font-size: 20px;
  color: white;
  position: relative;
}
.productshow-menu > ul > li > a img {
  position: absolute;
  bottom: -60%;
  left: 40%;
  display: none;
}
.productshow-menu > ul > li.on img {
  display: block;
}
.productshow {
  position: relative;
  z-index: -1;
  background: url(../images/productshow-bg.jpg) no-repeat;
  margin-top: -60px;
  padding-top: 60px;
}
.productshow .gm {
  padding-bottom: 60px;
  width:95%;
  max-width: 1300px;
  margin: 0 auto;
}
.productshow .top ul {
  overflow: hidden;
  display: grid;
  grid-template-columns: 50% 50%;
  grid-template-rows: 600px 320px;
  grid-template-areas: 'a b' 'c b';
}
.productshow .top li:first {
  grid-area: a;
}
.productshow .top li:nth-child(2) {
  grid-area: b;
}
.productshow .top li:last-child {
  grid-area: c;
}
.productshow .text1 {
  padding-top: 100px;
}
.productshow .text1 h3 {
  font-size: 35px;
}
.productshow .text1 h4 {
  margin-top: 5px;
  font-size: 20px;
  font-family: 'Arial';
}
.productshow .text2 {
  width: 75%;
}
.productshow .text2 h3 {
  font-size: 24px;
}
.productshow .text2 h3 span {
  margin-left: 5px;
  font-size: 12px;
  font-family: 'Arial';
}
.productshow .text2 p {
  margin-top: 20px;
  font-size: 20px;
  line-height: 1.4;
}
.productshow .text3 {
  font-size: 20px;
  color: #030303;
}
.productshow .text3 h3 {
  font-size: 24px;
}
.productshow .text3 h3 span {
  margin-left: 5px;
  font-size: 12px;
  font-family: 'Arial';
}
.productshow .text3 ul {
  margin-top: 25px;
  display: flex;
  flex-wrap: wrap;
}
.productshow .text3 ul li {
  margin-bottom: 30px;
  width: 50%;
}
.productshow .text3 ul li:nth-child(2n)::before {
  content: '|';
  margin-right: 5px;
}
.productshow .text3 > p:last-child {
  margin-top: 30px;
}
.switch-button {
  margin-top: 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.switch-button span {
  font-size: 16px;
  font-weight: bold;
  background-color: #56aab7;
  padding: 10px 45px;
  color: white;
}

@media screen and (max-width:768px) {
  .productshow-menu > ul{ width:100%; justify-content:space-around; }
.productshow-menu > ul > li > a{ font-size:16px; }
.productshow{ background-position-y:-200px; }
.productshow-banner{ height:250px; }
}