.container-fluid {
  max-width: 1200px !important;
  min-height: 550px;
}

.row-fluid {
  box-sizing: border-box;
}

.container_tab {
  height: 146px;
  margin: 50px auto 100px auto;
}

.title {
  font-size: 24px;
  margin: 0 auto;
  line-height: 36px;
  font-weight: 600;

}

.platform_list {
  width: 588px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 86px;
  padding: 8px;
  box-sizing: border-box;
  box-shadow: 0px 12px 24px rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  margin: 0 auto;
  margin-top: 24px;
}

.platform_list li {
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 282px;
  height: 70px;
  border-radius: 8px;
  box-sizing: border-box;
  line-height: 70px;
  font-size: 20px;
  color: rgba(18, 17, 39, 0.72);
  font-weight: 500;
}

.platform_list li:hover {
  color: #0067FF;
}

.isChecked {
  background-color: #0067ff !important;
  color: #fff !important;
}

.icon_circle {
  display: flex;
  justify-content: center;
  ;
  align-items: center;
  width: 36px;
  height: 36px;
  background: #FFFFFF;
  border-radius: 88px;
  box-shadow: 0px 8px 20px rgba(18, 17, 39, 0.1);
  margin-right: 6px;
}

.container_title {
  margin: 100px auto;
}

.container_content {
  display: flex;
  justify-content: space-between;
  ;
  flex-wrap: wrap;
}

.container_content li {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 31.7%;
  height: 90px;
  box-shadow: 0px 12px 24px rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  font-size: 14px;
  box-sizing: border-box;
  margin-top: 24px;
}

.container_content li:hover {
  box-shadow: 0px 12px 24px rgba(0, 0, 0, 0.1);
}

.container_content li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: #121127;
  font-style: normal;
  line-height: 21px;
}

.container_content :last-child:nth-child(3n - 1) {
  margin-right: calc(31.7% + 4.9% / 3 + 8px);
}

.knowledge_base {
  margin: 100px auto 150px auto !important;
}

.container_title_page {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.catagories {
  display: flex;
  align-items: center;
  height: 148px;
  width: 48.5%;
  border-radius: 8px;
  border: 2px solid transparent;
  margin-top: 24px;
}

.catagories:hover {
  border-color: rgba(0, 103, 255, 1);
  box-shadow: 0px 8px 20px rgb(18 17 39 / 10%);
}

.catagories a {
  display: flex;
  align-items: center;
  height: 100%;
  width: 100%;
  text-decoration: none;
  padding: 32px;
}


.category_name {
  font-size: 20px;
  font-weight: 500;
  color: #121127;
  text-align: left;
  margin: 0;
}

.category_descrip {
  font-size: 14px;
  font-weight: 400;
  color: #121127;
  text-align: left;
  margin-top: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  font-style: normal;
  line-height: 21px;
}

.help {
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  margin: 100px 0;
}

.help span {
  font-size: 32px;
  font-weight: 500;
  line-height: 45px;
}

.help a {
  width: 217px;
  height: 44px;
  background-color: #0067FF;
  color: #fff;
  font-size: 16px;
  text-align: center;
  margin-top: 24px;
  border-style: none;
  border-radius: 5px;
  font-weight: 500;
  font-size: 16px;
  line-height: 44px;
  text-decoration: none;
}

.help a:hover , .help a:focus {
  background: linear-gradient(0deg,rgba(0,0,0,.1),rgba(0,0,0,.1)),#0067ff !important;
  color: #fff !important;
  text-decoration: none !important;
}

.article-content-text {
  margin-left: 24px;
  margin-right: 30px;
  text-align: start;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  word-break: break-word;
  font-weight: 400;
}

/* 移动端自适应 */
@media screen and (max-width: 1024px) {
  .container_content li {
    width: 48.5%;
  }
}

@media screen and (max-width: 768px) {
  .catagories {
    width: 100%;
  }

  .container_content li {
    width: 100%;
  }

  .container_content :last-child:nth-child(3n - 1) {
    margin-right: 0;
  }

}

@media screen and (max-width: 640px) {
  .platform_list {
    width: 100%;
  }
}

@media screen and (max-width: 376px) {

  .row-fluid {
    display: flex;
    justify-content: space-between;
    width: 100% !important
  }

  .container_tab {
    width: 100%;
    display: flex;
    justify-content: center;
    flex-direction: column;
  }

  .platform_list {
    width: 95%;
    display: flex;
    justify-content: center;
  }

  .container_title {
    width: 100%;
  }

  .knowledge_base {
    width: 100%;
  }

  .catagories {
    width: 100%;
  }

  .catagories a {
    padding: 16px;
  }
}