body,
html {
  margin: 0;
  padding: 0;
}
a:link,
a:visited {
  text-decoration: none;
  color: inherit;
}
a:hover,
a:active {
  text-decoration: none;
  color: inherit;
}
.top-box {
  height: 200px;
}

.top-nav-box {
  /* background-color: antiquewhite; */
  width: 500px;
  height: calc(100% - 37px - 37px - 33px);
  margin: auto;
  font-family: "Microsoft YaHei";
  font-size: 18px;
  color: #1a1a1a;
  text-align: center;
}

.logo {
  /* background-color: aquamarine; */
  text-align: center;
  padding: 35px 0;
}

.nav-bottom-active {
  padding-bottom: 10px;
  border-bottom: 2px solid #ec8883;
}

.banner {
  width: 100%;
  height: 800px;
  background-image: url("../images/about-1.jpg");
  /* background-size:cover; */
  background-position-x: center;
  background-repeat: no-repeat;
  overflow: hidden;
}
.banner img {
  width: 100%;
}

.product-tit{
  /* background-color: #e72c21; */
  font-size: 60px;
  font-weight: bold;
  color: #1a1a1a;
  margin-top: 340px;
  margin-left: 580px;
}

.intro {
  width: 1100px;
  height: 580px;
  background-color: #f2f2f2;
  text-align: center;
  margin: auto;
}
.intro-tit,
.idea-tit,
.core-tit {
  font-size: 34px;
  font-family: "微软雅黑";
  font-weight: bold;
  color: #e72c21;
  margin-top: 85px;
  text-align: center;
}
.intro-tit2 {
  font-size: 24px;
  font-family: "微软雅黑";
  margin-top: 30px;
}
.intro-cont {
  margin-top: 50px;
}
.idea {
  width: 1300px;
  height: 518px;
  font-family: "微软雅黑";
  /* background-color: #e72c21; */
  margin: auto;
}
.idea-list-box {
  height: 68px;
  /* background-color: #ec8883; */
  margin-top: 90px;
}
.idea-list-box div {
  display: inline-block;
  vertical-align: top;
}
.idea-list-box div:last-of-type {
  margin-left: 23px;
}

.core {
  width: 1300px;
  height: 700px;
  /* background-color: #1234; */
  /* background-image: url("../images/juxing.png");
    background-position-x: 50%;
    background-repeat:no-repeat;
    background-size: contain; */
  font-family: "微软雅黑";
  margin: auto;
}
.core-img-box {
  height: 291px;
  /* background-color: #ec8883; */
  overflow: hidden;
}
.core-img-box img {
  width: 1099px;
  height: 521px;
  position: relative;
  top: -215px;
  left: 90px;
}
.core-cont-box {
  margin-top: 75px;
}
.core-cont-tit {
  color: #1a1a1a;
  line-height: 40px;
}

.brand {
  width: 100%;
  height: 800px;
  font-family: "微软雅黑";
}

/* .brand-list{
  cursor: pointer;
} */

.brand-img {
  display: block;
  margin: auto;
}
.brand-active {
  color: #e72c21;
  cursor: pointer;
}

.brand-cont1,
.brand-cont2{
  /* background-color: #e72c21; */
  position: absolute;
  color: #fff;
  /* display: none; */
}

.brand-cont1{
  left: 380px;
  bottom: 80px;
  width: 150px;
}

.brand-cont2{
  left: calc(50% - 125px);
  top: 230px;
    width: 150px;
}

.brand-cont3,
.brand-cont4{
  /* width: 200px; */
  left: 345px;
  top: 100px;
  text-align: center;
  color: #fff;
  /* background-color: #e72c21; */
  /* display: inline-block; */
}

.brand-cont3-left-num{
  font-size: 50px;
  font-weight: bold;
}

.brand-cont3-left-cont{
  margin-top: 30px;
}

.brand-btn-box{
  display: flex;
  /* background-color: aqua; */
  margin-top: 20px;
  margin-left: 30px;
}

.brand-btn1,
.brand-btn2{
  width: 60px;
  height: 60px;
  /* background-color: #e72c21; */
}

.brand-btn2{
  margin-left: 10px;
}

.brand-cont3-right{
  /* width: 300px; */
  /* height: 250px; */
  /* background-color: aquamarine; */
  margin-left: 20px;
  margin-top: 60px;
}

.brand-cont3-right-row1,
.brand-cont3-right-row2{
  /* width: 520px; */
  height: 40px;
  /* background-color: #e72c21; */
  display: flex;
  color: #1a1a1a;
  line-height: 40px;
}

.brand-cont3-right-row1>div,
.brand-cont3-right-row2>div{
  width: 250px;
}

.br1{
  margin-left: 75px;
}

.br2{
  margin-left: 60px;
}

.br3{
  margin-left: 80px;
}

.brand-cont3-right-row2{
  margin-top: 160px;
}

/* 发展历程 */
.history {
  width: 100%;
  height: 600px;
  background-color: #f2f2f2;
}

.history-row-box {
  width: 1200px;
  margin: 130px auto 0;
}

.history-list-box {
  display: flex;
  margin-top: 20px;
  color: #1a1a1a;
  font-size: 16px;
  line-height: 40px;
  word-break: break-all;
}

.history-list-box img {
  width: 8px;
  height: 8px;
  margin-top: 16px;
  margin-right: 10px;
}

.history-row-box span.num {
  color: #b0b0b0;
}
.history-row-box span {
  color: #666666;
}

/* .history{
    width: 100%;
    height: 630px;
    background-color: #f2f2f2;
}
.history-row-box{
    background-color: #ec8883;
    margin-top: 85px;
    line-height: 40px;
}

.history-row-box span.num{
    color: #B0B0B0;
}
.history-row-box span{
    color: #666666;
}

.history-row-box .test::before{
    color: #666666;
    content: url("../images/dot.png");
}

.history-row-box .test{
    color: #1a1a1a;
    margin-top: 45px;
    font-size: 16px;
    background-color: #e72c21;
} */

.intro-cont1 {
  text-align: left;
  line-height: 30px;
  font-size: 16px;
  color: #1a1a1a;
}

.intro1 {
  margin-top: 20px;
  line-height: 40px;
}

/* .brand-img{
    width: 100%;
    height: 100%;
    object-fit: contain;
  } */

/* 联系 */
.connect {
  width: 100%;
  height: 350px;
  background-color: #ededed;
}
.connect-cont {
  /* width: 100px; */
  /* height: 125px; */
  /* background-color: royalblue; */
  margin-top: 90px;
  margin-left: 400px;
  font-size: 18px;
  color: #1a1a1a;
}