#app {
  min-width: 1400px;
  margin: 0 auto;
  box-sizing: border-box;
  background: #F8F9FA;
}
#banner {
  width: 100%;
  height: 450px;
  background: url('../images/banner-bg.png') no-repeat center center / cover;
}
#banner .banner-content {
  width: 1200px;
  margin: 0 auto;
  color: white;
  box-sizing: border-box;
  font-family: SourceHanSansCN, SourceHanSansCN;
}
#banner .banner-content img {
  margin-top: 64px;
  margin-bottom: 68px;
  box-sizing: border-box;
}
#banner .banner-content .title {
  font-weight: 700;
  font-size: 56px;
  color: #FFFFFF;
  margin-bottom: 28px;
  line-height: 65px;
  box-sizing: border-box;
}
#banner .banner-content .time {
  font-weight: 400;
  font-size: 20px;
  color: #1B3546;
  background: #F6821C;
  padding: 8px 17px;
  box-sizing: border-box;
}
#intro {
  width: 100%;
  background: white;
}
#intro .intro-content {
  width: 1200px;
  margin: 0 auto;
  padding-top: 76px;
  padding-bottom: 80px;
  box-sizing: border-box;
}
#intro .intro-content .title-box {
  text-align: center;
  position: relative;
}
#intro .intro-content .title-box img {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
#intro .intro-content .title-box .title {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
}
#intro .intro-content .title-box .title span {
  z-index: 2;
}
#intro .intro-content .title-box .title span:first-child {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 700;
  font-size: 44px;
  color: #000000;
  letter-spacing: 4.4px;
}
#intro .intro-content .title-box .title span:last-child {
  margin-top: 15px;
  box-sizing: border-box;
  width: 50px;
  height: 5px;
  background: #F6821C;
}
#intro .intro-content .content {
  margin-top: 30px;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 300;
  font-size: 18px;
  color: #000000;
  box-sizing: border-box;
  line-height: 30px;
  text-align: justify;
}
#white-paper {
  width: 100%;
}
#white-paper .white-paper-content {
  width: 1200px;
  margin: 0 auto;
  padding-top: 66px;
  padding-bottom: 120px;
  box-sizing: border-box;
}
#white-paper .white-paper-content .title-box {
  text-align: center;
  position: relative;
}
#white-paper .white-paper-content .title-box img {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
#white-paper .white-paper-content .title-box .title {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
}
#white-paper .white-paper-content .title-box .title span {
  z-index: 2;
}
#white-paper .white-paper-content .title-box .title span:first-child {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: bold;
  font-size: 44px;
  color: #000000;
  letter-spacing: 4.4px;
}
#white-paper .white-paper-content .title-box .title span:last-child {
  margin-top: 15px;
  box-sizing: border-box;
  width: 50px;
  height: 5px;
  background: #F6821C;
}
#white-paper .white-paper-content .s-title-1 {
  margin-top: 40px;
  box-sizing: border-box;
  text-align: center;
}
#white-paper .white-paper-content .s-title-1 span {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 700;
  font-size: 30px;
  color: #333333;
}
#white-paper .white-paper-content .s-title-1 span:first-child {
  color: #F6821C;
}
#white-paper .white-paper-content .s-content-1 {
  padding-top: 23px;
  box-sizing: border-box;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 300;
  font-size: 18px;
  color: #000000;
  line-height: 30px;
}
#white-paper .white-paper-content .s-title-2 {
  margin-top: 50px;
  box-sizing: border-box;
  text-align: center;
}
#white-paper .white-paper-content .s-title-2 span {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 700;
  font-size: 30px;
  color: #333333;
}
#white-paper .white-paper-content .s-title-2 span:first-child {
  color: #F6821C;
}
#white-paper .white-paper-content .s-content-2 {
  margin-top: 25px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-column-gap: 30px;
}
#white-paper .white-paper-content .s-content-2 .item {
  background: white;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 25px 18px;
  box-sizing: border-box;
  font-family: SourceHanSansCN, SourceHanSansCN;
}
#white-paper .white-paper-content .s-content-2 .item .title {
  font-weight: 700;
  font-size: 18px;
  color: #000000;
}
#white-paper .white-paper-content .s-content-2 .item .content {
  margin-top: 5px;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
}
#white-paper .white-paper-content .s-content-2 .item .content p {
  padding-right: 10px;
  box-sizing: border-box;
  font-weight: 300;
  font-size: 16px;
  color: #333333;
  line-height: 24px;
}
#white-paper .white-paper-content .s-title-3 {
  margin-top: 48px;
  box-sizing: border-box;
  text-align: center;
}
#white-paper .white-paper-content .s-title-3 span {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 700;
  font-size: 30px;
  color: #333333;
}
#white-paper .white-paper-content .s-title-3 span:first-child {
  color: #F6821C;
}
#white-paper .white-paper-content .s-content-3 {
  margin-top: 25px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-column-gap: 26px;
}
#white-paper .white-paper-content .s-content-3 .item {
  display: flex;
  flex-direction: column;
  padding: 15px 15px 21px 15px;
  box-sizing: border-box;
  background: #FFFFFF;
  border: 1px solid #EEEEEE;
  font-family: SourceHanSansCN, SourceHanSansCN;
}
#white-paper .white-paper-content .s-content-3 .item h1 {
  font-weight: 700;
  font-size: 18px;
  color: #000000;
  text-align: center;
  margin-top: 15px;
  margin-bottom: 10px;
  box-sizing: border-box;
}
#white-paper .white-paper-content .s-content-3 .item p {
  font-weight: 400;
  font-size: 14px;
  color: #555555;
  line-height: 18px;
  text-align: justify;
}
#white-paper .white-paper-content .down-box {
  margin-top: 20px;
  box-sizing: border-box;
  text-align: center;
  position: relative;
  height: 210px;
  display: flex;
  justify-content: center;
  align-items: center;
}
#white-paper .white-paper-content .down-box img {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
#white-paper .white-paper-content .down-box p {
  z-index: 2;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 700;
  font-size: 24px;
  color: #000000;
  line-height: 36px;
}
#white-paper .white-paper-content .download-btn {
  margin-top: 15px;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
}