* {
  margin: 0;
  padding: 0;
}
body {
  background: #1c1c1c;
  font-family: "SourceHanSansCN-Bold";
}
li {
  list-style: none;
}
a {
  text-decoration: none;
}
.header {
  box-sizing: border-box;
  width: 100%;
  height: 83px;
  background: #1b1b1b;
  border-bottom: 2px solid #2a2a2a;
}
.header .header-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  height: 100%;
  justify-content: space-between;
  width: 80%;
  margin: 0 auto;
}
.header .header-content .logo {
  color: #cacaca;
  font-size: 20px;
  font-weight: 600;
}
.header .header-content .nav ul {
  display: flex;
}
.header .header-content .nav ul li {
  margin-left: 10px;
}
.header .header-content .nav ul li a {
  color: #fff;
  border-radius: 5px;
  padding: 10px 20px;
  transition: all 0.6s;
}
.header .header-content .nav ul li a:hover {
  background-color: #ff6b00;
}
.section1 {
  width: 80%;
  margin: 40px auto;
  display: flex;
  flex-direction: row;
}
.section1 > .describe {
  width: 60%;
}
.section1 > .describe h2 {
  font-size: 60px;
  color: #fff;
  margin-bottom: 40px;
}
.section1 > .describe p {
  color: #cacaca;
  font-size: 18px;
  margin-bottom: 100px;
}
.section1 > .describe a {
  color: #fff;
  border-radius: 5px;
  padding: 10px 20px;
  transition: all 0.6s;
  background-color: #ff6b00;
}
.section1 .img {
  flex: 1;
}
.section1 .img img {
  width: 100%;
}
.section2 {
  width: 80%;
  margin: 20px auto;
}
.section2 .title {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section2 .title > h2 {
  color: #fff;
  font-size: 72px;
}
.section2 .title .line {
  width: 80px;
  height: 8px;
  background: #ff6b00;
  margin: 20px 0px;
}
.section2 .title p {
  height: 58px;
  font-size: 20px;
  font-family: SourceHanSansCN-Normal, SourceHanSansCN;
  font-weight: 400;
  color: #fefefe;
  line-height: 36px;
}
.section2 .section2-content {
  margin-top: 100px;
  margin-bottom: 100px;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
}
.section2 .section2-content > .item {
  position: relative;
  margin-top: 20px;
  width: 48%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section2 .section2-content > .item img {
  width: 100%;
  position: relative;
  z-index: 1;
}
.section2 .section2-content > .item .item-title {
  width: 100%;
  text-indent: 0em;
  position: relative;
  z-index: 1;
  font-size: 30px;
  font-family: "SourceHanSansCN-Bold, SourceHanSansCN";
  font-weight: bold;
  color: #ffffff;
  line-height: 79px;
}
.section2 .section2-content > .item .item-title1::before {
  z-index: 0;
  position: absolute;
  content: "";
  width: 40px;
  top: -10px;
  left: 450px;
  height: 40px;
  background: url(../images/title-r.png) no-repeat center;
}
.section2 .section2-content > .item .item-title2::before {
  z-index: 0;
  position: absolute;
  content: "";
  width: 40px;
  top: -10px;
  left: -39px;
  height: 40px;
  background: url(../images/title-left.png) no-repeat center;
}
.section2 .section2-content > .item > p {
  width: 100%;
  font-family: "SourceHanSansCN-Bold, SourceHanSansCN";
  font-size: 18px;
  font-weight: 400;
  color: #fefefe;
  line-height: 36px;
}
.section2 .section2-content .item1::before {
  content: "";
  position: absolute;
  width: 181px;
  height: 200px;
  left: -14px;
  top: -40px;
  z-index: 0;
  background: #db5c00;
}
.section2 .section2-content .item2::after {
  content: "";
  position: absolute;
  width: 181px;
  height: 200px;
  right: -14px;
  bottom: -40px;
  z-index: 0;
  background: #db5c00;
}
.section3 {
  width: 80%;
  margin: 20px auto;
}
.section3 > .title {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section3 > .title > h2 {
  color: #fff;
  font-size: 72px;
}
.section3 > .title .line {
  width: 80px;
  height: 8px;
  background: #ff6b00;
  margin: 20px 0px;
}
.section3 > .title p {
  font-size: 20px;
  font-family: "SourceHanSansCN-Normal, SourceHanSansCN";
  font-weight: 400;
  color: #fefefe;
  line-height: 36px;
  width: 800px;
  text-align: center;
}
.section3 .section3-content {
  margin-top: 80px;
  display: grid;
  gap: 5px;
  grid-template-columns: repeat(6, 1fr);
}
.section3 .section3-content .list {
  position: relative;
}
.section3 .section3-content .list .title {
  color: #fff;
  display: flex;
  font-size: 18px;
  font-family: "SourceHanSerifCN-Regular, SourceHanSerifCN";
  color: #c4c4c4;
  line-height: 40px;
  white-space: nowrap;
}
.section3 .section3-content .list .title span {
  height: 20px;
  font-size: 27px;
  font-weight: 400;
  color: #ffffff;
  margin-right: 10px;
}
.section3 .section3-content .list .title1 {
  position: relative;
  left: 40px;
}
.section3 .section3-content .list .line_c {
  position: absolute;
  left: 100px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}
.section3 .section3-content .list .line_c .round {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: #fff;
}
.section3 .section3-content .list .line_c .g {
  background-color: #99c08d;
}
.section3 .section3-content .list .line_c .o {
  background-color: #da7d2b;
}
.section3 .section3-content .list .line_c .line {
  margin: 0px 20px;
  width: 100px;
  height: 2px;
}
.section4 {
  width: 80%;
  margin: 100px auto;
}
.section4 > .title {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section4 > .title > h2 {
  color: #fff;
  font-size: 72px;
}
.section4 > .title .line {
  width: 80px;
  height: 8px;
  background: #ff6b00;
  margin: 20px 0px;
}
.section4 > .title p {
  height: 58px;
  font-size: 20px;
  font-family: SourceHanSansCN-Normal, SourceHanSansCN;
  font-weight: 400;
  color: #fefefe;
  line-height: 36px;
  width: 800px;
  text-align: center;
}
.section4 .section4-content {
  display: flex;
  margin: 50px 0px;
  flex-direction: row;
  justify-content: space-between;
}
.section4 .section4-content > div {
  width: 48%;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: "SourceHanSansCN-Bold, SourceHanSansCN";
}
.section4 .section4-content > div .dec-title {
  font-size: 30px;
  font-weight: bold;
  color: #ffffff;
  line-height: 93px;
  margin-bottom: 20px;
}
.section4 .section4-content > div p {
  margin-top: 70px;
  font-size: 18px;
  font-weight: 400;
  color: #fefefe;
  line-height: 36px;
}
.section4 .section4-content > div img {
  width: 100%;
}
.section5 {
  width: 80%;
  margin: 100px auto;
}
.section5 > .title {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section5 > .title > h2 {
  color: #fff;
  font-size: 72px;
}
.section5 > .title .line {
  width: 80px;
  height: 8px;
  background: #ff6b00;
  margin: 20px 0px;
}
.section5 > .title p {
  height: 58px;
  font-size: 20px;
  font-family: SourceHanSansCN-Normal, SourceHanSansCN;
  font-weight: 400;
  color: #fefefe;
  line-height: 36px;
  width: 800px;
  text-align: center;
}
.section5 .serction5-content {
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  width: 100%;
}
.section5 .serction5-content .section5-item {
  border-radius: 4px;
  box-sizing: border-box;
  padding: 40px 20px;
  color: #fff;
  transition: all 0.6s;
  font-family: "SourceHanSansCN-Bold, SourceHanSansCN";
}
.section5 .serction5-content .section5-item .item-title {
  text-align: center;
  font-size: 48px;
  font-weight: bold;
  line-height: 93px;
}
.section5 .serction5-content .section5-item > p {
  font-size: 18px;
  font-weight: 400;
  line-height: 36px;
  text-align: center;
}
.section5 .serction5-content .section5-item:hover {
  color: #000;
  background: #ff6b00;
  border: 1px solid #ff6b00;
}
.section5 .serction5-content .section5-item:nth-child(1) {
  border: 1px solid #ff6b00;
}
.section5 .serction5-content .section5-item:nth-child(2) {
  border: 1px solid #1265e2;
}
.section5 .serction5-content .section5-item:nth-child(3) {
  border: 1px solid #de4dbe;
}
.section6 {
  width: 80%;
  margin: 100px auto;
}
.section6 .section6-title {
  height: 35px;
  font-size: 40px;
  font-family: "SourceHanSansCN-Bold, SourceHanSansCN";
  font-weight: bold;
  color: #ffffff;
  line-height: 93px;
}
.section6 p {
  font-size: 16px;
  color: #cacaca;
  margin: 100px 0px;
}
.section6 .my_btn {
  color: #fff;
  display: flex;
  padding: 10px 20px;
  box-sizing: border-box;
  width: 307px;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  font-size: 18px;
  background: #ff6b00;
  border-radius: 3px 3px 3px 3px;
  cursor: pointer;
}
@media screen and (max-width: 1400px) {
  .section3 {
    width: 80%;
  }
  .section3 > .title > h2 {
    font-size: 65px;
  }
  .section3 > .title .line {
    width: 80px;
    height: 8px;
    background: #ff6b00;
    margin: 20px 0px;
  }
  .section3 > .title p {
    font-size: 20px;
    font-family: "SourceHanSansCN-Normal, SourceHanSansCN";
    font-weight: 400;
    color: #fefefe;
    line-height: 36px;
    width: 800px;
    text-align: center;
  }
  .section3 .section3-content {
    grid-template-columns: repeat(3, 1fr);
  }
  .section3 .section3-content .list {
    position: relative;
  }
  .section3 .section3-content .list .title {
    position: relative;
    left: 20px;
  }
  .section3 .section3-content .list .line_c {
    position: relative;
    left: 100px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
  }
  .section3 .section3-content .list .line_c .round {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: #fff;
  }
  .section3 .section3-content .list .line_c .g {
    background-color: #99c08d;
  }
  .section3 .section3-content .list .line_c .o {
    background-color: #da7d2b;
  }
  .section3 .section3-content .list .line_c .line {
    margin: 0px 10px;
    width: 100px;
    height: 2px;
  }
}
@media screen and (max-width: 1200px) {
  .header .header-content {
    box-sizing: border-box;
    padding: 0px 10px;
    width: 100%;
  }
  .header .header-content .logo {
    color: #cacaca;
    font-size: 20px;
  }
  .section1 {
    width: 100%;
    box-sizing: border-box;
    padding: 0px 10px;
  }
  .section1 > .describe h2 {
    font-size: 40px;
  }
  .section1 > .describe p {
    font-size: 16px;
  }
  .section2 {
    box-sizing: border-box;
    padding: 10px;
    width: 100%;
    margin: 20px auto;
  }
  .section2 .title > h2 {
    font-size: 52px;
  }
  .section2 .title .line {
    width: 60px;
    height: 6px;
  }
  .section2 .title p {
    font-family: "SourceHanSansCN-Normal, SourceHanSansCN";
  }
  .section2 .section2-content {
    margin-top: 50px;
    box-sizing: border-box;
    padding: 20px;
    margin-bottom: 50px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .section2 .section2-content > .item {
    position: relative;
    width: 48%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .section2 .section2-content > .item .item-title {
    position: relative;
    z-index: 1;
    width: 100%;
    font-size: 35px;
    font-family: "SourceHanSansCN-Bold, SourceHanSansCN";
    font-weight: bold;
    color: #ffffff;
    line-height: 79px;
  }
  .section2 .section2-content > .item .item-title1::before {
    z-index: 0;
    position: absolute;
    content: "";
    width: 40px;
    top: -10px;
    left: 280px;
    height: 40px;
    background: url(../images/title-r.png) no-repeat center;
  }
  .section2 .section2-content > .item .item-title2::before {
    z-index: 0;
    position: absolute;
    content: "";
    width: 40px;
    top: -10px;
    left: -39px;
    height: 40px;
    background: url(../images/title-left.png) no-repeat center;
  }
  .section2 .section2-content > .item > p {
    width: 100%;
    font-size: 16px;
    font-weight: 400;
    color: #fefefe;
    line-height: 30px;
  }
  .section2 .section2-content .item1::before {
    content: "";
    position: absolute;
    width: 181px;
    height: 200px;
    left: -14px;
    top: -40px;
    z-index: 0;
    background: #db5c00;
  }
  .section2 .section2-content .item2::after {
    content: "";
    position: absolute;
    width: 181px;
    height: 200px;
    right: -14px;
    bottom: -40px;
    z-index: 0;
    background: #db5c00;
  }
  .section3 {
    width: 100%;
  }
  .section3 > .title > h2 {
    font-size: 50px;
  }
  .section3 > .title .line {
    width: 60px;
    height: 6px;
  }
  .section3 > .title p {
    width: 100%;
  }
  .section3 .section3-content {
    box-sizing: border-box;
    padding: 10px;
    grid-template-columns: repeat(3, 1fr);
  }
  .section3 .section3-content .list .title {
    color: #fff;
    font-size: 12px;
  }
  .section3 .section3-content .list .title span {
    height: 20px;
    font-size: 14px;
    font-weight: 400;
    color: #ffffff;
    margin-right: 10px;
  }
  .section3 .section3-content .list .line_c {
    position: relative;
    left: 0px;
  }
  .section4 {
    width: 100%;
    margin: 100px auto;
  }
  .section4 > .title {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .section4 > .title > h2 {
    font-size: 62px;
    line-height: 40px;
  }
  .section4 > .title .line {
    width: 60px;
    height: 6px;
  }
  .section4 > .title p {
    font-size: 18px;
    margin-top: 100px;
    width: 100%;
  }
  .section4 .section4-content {
    box-sizing: border-box;
    padding: 10px;
    margin: 50px 0px;
    flex-direction: column;
  }
  .section4 .section4-content > div {
    width: 100%;
  }
  .section4 .section4-content > div .dec-title {
    font-size: 20px;
  }
  .section4 .section4-content > div p {
    margin-top: 100px;
    font-size: 18px;
  }
  .section5 {
    width: 100%;
    margin: 100px auto;
  }
  .section5 > .title > h2 {
    color: #fff;
    font-size: 52px;
  }
  .section5 > .title .line {
    width: 60px;
    height: 6px;
  }
  .section5 > .title p {
    font-size: 18px;
    width: 100%;
  }
  .section5 .serction5-content {
    gap: 20px;
    box-sizing: border-box;
    padding: 20px;
  }
  .section5 .serction5-content .section5-item .item-title {
    font-size: 30px;
    line-height: 73px;
  }
  .section5 .serction5-content .section5-item > p {
    font-size: 14px;
  }
}
@media screen and (max-width: 800px) {
  .header {
    box-sizing: border-box;
    width: 100%;
    height: 83px;
    background: #1b1b1b;
    border-bottom: 2px solid #2a2a2a;
  }
  .header .header-content {
    display: flex;
    flex-direction: row;
    align-items: center;
    height: 100%;
    width: 100%;
    margin: 0 auto;
  }
  .header .header-content .logo {
    color: #cacaca;
    font-size: 12px;
    display: none;
  }
  .header .header-content .nav ul {
    display: flex;
  }
  .header .header-content .nav ul li {
    margin-left: 8px;
  }
  .header .header-content .nav ul li a {
    font-size: 12px;
    border-radius: 5px;
    padding: 8px 10px;
    transition: all 0.6s;
  }
  .header .header-content .nav ul li a:hover {
    background-color: #ff6b00;
  }
  .header .header-content .nav ul li .active {
    background-color: #ff6b00;
  }
  .section1 {
    width: 80%;
    flex-direction: column;
  }
  .section1 > .describe {
    width: 100%;
    margin-bottom: 20px;
  }
  .section1 > .describe h2 {
    font-size: 40px;
    color: #fff;
    margin-bottom: 20px;
  }
  .section1 > .describe p {
    font-size: 14px;
    margin-bottom: 50px;
  }
  .section1 > .describe a {
    color: #fff;
    border-radius: 5px;
    padding: 8px 17px;
    transition: all 0.6s;
    background-color: #ff6b00;
  }
  .section1 .img {
    width: 100%;
  }
  .section2 .title > h2 {
    font-size: 30px;
  }
  .section2 .title .line {
    width: 40px;
    height: 6px;
  }
  .section2 .title p {
    margin-bottom: 80px;
    font-size: 14px;
  }
  .section2 .section2-content {
    flex-direction: column;
  }
  .section2 .section2-content > .item {
    width: 100%;
  }
  .section2 .section2-content > .item p {
    font-size: 14px;
  }
  .section3 {
    width: 100%;
  }
  .section3 > .title > h2 {
    font-size: 50px;
  }
  .section3 > .title .line {
    width: 60px;
    height: 6px;
  }
  .section3 > .title p {
    width: 100%;
  }
  .section3 .section3-content {
    box-sizing: border-box;
    padding: 10px;
    grid-template-columns: repeat(2, 1fr);
  }
  .section4 {
    width: 80%;
    margin: 100px auto;
  }
  .section4 > .title {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .section4 > .title > h2 {
    font-size: 42px;
  }
  .section4 > .title .line {
    width: 60px;
    height: 6px;
  }
  .section4 > .title p {
    font-size: 16px;
    width: 100%;
  }
  .section4 .section4-content > div .dec-title {
    margin: 50px 0px;
    line-height: 30px;
    font-size: 26px;
  }
  .section4 .section4-content > div p {
    margin-top: 10px;
    font-size: 16px;
  }
  .section5 {
    width: 100%;
    margin: 100px auto;
  }
  .section5 > .title > h2 {
    color: #fff;
    font-size: 22px;
  }
  .section5 > .title .line {
    width: 60px;
    height: 6px;
  }
  .section5 > .title p {
    font-size: 12px;
    width: 100%;
  }
  .section5 .serction5-content {
    gap: 20px;
    grid-template-columns: repeat(1, 1fr);
  }
  .section5 .serction5-content .section5-item .item-title {
    font-size: 30px;
    line-height: 73px;
  }
  .section5 .serction5-content .section5-item > p {
    font-size: 14px;
  }
}
.model {
  box-sizing: border-box;
  cursor: pointer;
  position: fixed;
  bottom: -400px;
  z-index: 99999;
  left: 0px;
  background-color: #535353;
  width: 100%;
  height: 400px;
  transition: all 1s;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #fff;
}
.model .model-title {
  margin-top: 80px;
}
.model .dsc {
  line-height: 35px;
  text-align: center;
  margin: 20px 0px;
}
.model .will {
  font-size: 12px;
  color: #c4c4c4;
}
.model .btns {
  width: 368px;
  margin-top: 20px;
  margin-bottom: 50px;
  display: flex;
  justify-content: space-between;
}
.model .btns span {
  width: 40%;
  line-height: 30px;
  border-radius: 4px;
  text-align: center;
  border: 1px solid #ccc;
  transition: all 0.6s;
}
.model .btns span:hover {
  background-color: #db5c00;
}