@charset 'utf-8';

.container {
  max-width: 1200px;
  font-family: STHeitiSC, STHeitiSC;
}

.container_second {
  margin-top: 250px;
}

p {
  margin: 0;
}

.top-bar {
  margin: 90px 0 112px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.top-bar .title {
  font-weight: 500;
  font-size: 44px;
  color: #000000;
  padding-bottom: 34px;
}

.top-bar .title .icon-img {
  display: inline-block;
  vertical-align: middle;
  margin-right: 30px;
  width: 50px;
}

.top-bar .desc {

  font-weight: 300;
  font-size: 22px;
  color: #000000;
}

.main-content {
  padding: 0 20px;
  margin-bottom: 143px;
}

.main-content .item {
  display: flex;
  align-items: center;
}

.main-content .item {
  margin-bottom: 100px;
}

.main-content .item:last-child {
  margin-bottom: 0px;
}

.main-content .item:nth-child(even) {
  flex-direction: row-reverse;
}

.container_second .main_content_second .item:nth-child(odd) {
  flex-direction: row-reverse;
}

.container_second .main_content_second .item:nth-child(even) {
  flex-direction: row;
}

.container_second .main_content_second .item .c-img {
  width: 150px;
  height: 150px;
}

.main-content .item .c-img {
  width: 50%;
}

.container_second .main_content_second .item .content {
  width: 75%;
}

.main-content .item:nth-child(odd) .c-img {
  margin-right: 42px;
}

.main-content .item:nth-child(even) .content {
  margin-right: 42px;
}

.main_content_second .item:nth-child(even) .c-img {
  margin-right: 20%;
}


.main_content_second .item:nth-child(odd) .content {
  margin-right: 20%;
}

.main-content .item .content .title {
  font-weight: 500;
  font-size: 27px;
  color: #000000;
  padding-bottom: 32px;
}

.main-content .item .content .desc {
  font-family: STHeitiSC, STHeitiSC;
  font-weight: 300;
  font-size: 22px;
  color: #000000;
  line-height: 46px;
}

.main-content .item .content {
  width: 50%;
}

/*-------------------------- ipad ipad-pro -------------------------*/
@media (max-width: 1024px) and (min-width: 668px) {
  .top-bar {
    margin: 37px 0 42px 0;
  }

  .main-content .item .c-img {
    width: 50%;
  }

  .main-content .item .content .title {
    padding-bottom: 0;
  }

  .main-content .item .content .desc {
    line-height: 30px;
  }

  .container {
    max-width: 960px;
  }

  .main-content .item .content {
    width: 100%;
  }
}

/*--------------------------- moblie -------------------------------*/
@media (max-width: 760px) and (min-width: 320px) {
  .container {
    max-width: inherit;
  }

  .top-bar {
    margin: 20px 0 30px 0;
  }

  .top-bar .title {
    font-size: 22px;
    font-weight: 400;
    padding-bottom: 10px;
  }

  .top-bar .title .icon-img {
    width: 20px;
    margin-right: 10px;
  }

  .top-bar .desc {
    font-size: 14px;
    padding: 0 20px;
  }

  .main-content {
    padding: 0 20px;
    margin-bottom: 35px;
  }

  .main-content .item .c-img {
    width: 100%;
  }

  .main-content .item {
    flex-direction: column !important;
    margin-bottom: 30px;
  }

  .main-content .item:nth-child(odd) .c-img {
    margin-right: 0 !important;
  }

  .main-content .item:nth-child(even) {
    flex-direction: column;
  }

  .main-content .item:nth-child(even) .content {
    margin-right: 0 !important;
  }

  .main-content .item .content .title {
    font-size: 22px;
    padding: 10px 0;
    font-weight: 400;
  }

  .main-content .item .content .desc {
    font-size: 18px;
    font-family: PingFang-SC-Regular;
    font-weight: 400;
    color: #231816;
  }

  .main-content .item .content {
    width: 100% !important;
  }
  .main_content_second .item:nth-child(even) .c-img{
    margin-right: 0;
  }
  .main_content_second .item:nth-child(odd) .content {
    margin-right: 0;
  }
}