* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

p {
  margin: 0;
  padding: 0;
}

/* common */
.back_color {
  color: #000000 !important;
}

.back_border {
  border-top: 1px solid #000000 !important;
}

/*  head */
.head_sticky {
  position: sticky;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 1;
}

.head_box {
  width: 100%;
  height: 100px;
  background: #ffffff;
  display: flex;
  align-items: center;
  padding: 0 100px;
  justify-content: space-between;
  border-bottom: 1px solid #e0e0e0;
}

.head_left {
  display: flex;
  align-items: center;
}

.logo_img {
  cursor: pointer;
}

.navigation_list_box {
  margin-left: 75px;
  display: flex;
  align-items: center;
}

.navigation_item {
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #010101;
}

.navigation_item:hover {
  cursor: pointer;
  color: #eed129;
}

.navigation_item + .navigation_item {
  margin-left: 75px;
}

.head_right {
  display: flex;
  align-items: center;
}

.tel_box {
  display: flex;
  align-items: center;
}

.tel_text {
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #010101;
  margin-left: 14px;
}

/* banner */

.banner_item_box {
  background-size: 100% 100%;
}

.banner_item_content_box_way1 {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: relative;
  /*z-index: 100;*/
  flex-direction: column;
}

.banner_item_content_box_way1_title {
  font-size: 54px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #ffffff;
}

.banner_item_content_box_way1_subtitle {
  width: 636px;
  height: 64px;
  background: rgba(238, 209, 41, 0.6);
  border-radius: 10px 10px 10px 10px;
  margin-top: 60px;
  font-size: 34px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
  text-align: center;
  line-height: 64px;
}

.banner_item_content_box_way2 {
  display: flex;
  align-items: flex-start;
  width: 100%;
  height: 100%;
  position: relative;
  /*z-index: 100;*/
  flex-direction: column;
  justify-content: center;
  padding-left: 220px;
}

.banner_item_content_box_way2_title {
  font-size: 62px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
}

.banner_item_content_box_way2_subtitle {
  font-size: 24px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
  margin-top: 30px;
}

/* server */

.main_title {
  text-align: center;
  font-size: 36px;
  color: #000;
}

.server_title_box {
  margin-top: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.line {
  width: 160px;
  border-top: 1px solid #000000;
  opacity: 0.6;
}

.line_box {
  display: flex;
  align-items: center;
}

.line_title {
  margin: 20px 50px;
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
}

.subtitle {
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
}

.server_list {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 100px;
  margin-top: 150px;
}

.server_item {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 376px;
  height: 509px;
  background: #ffffff;
  box-shadow: 0 3px 12px 1px rgba(0, 0, 0, 0.16);
  border-radius: 4px;
}

.item_server_box {
  width: 376px;
  height: 323px;
  background: #49a6e4;
  border-radius: 4px 4px 0 0;
}

.item_server_box > img {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.server_item_title {
  font-size: 32px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  margin-top: 50px;
}

.server_item_subtitle {
  padding: 10px;
  margin-top: 20px;
  font-size: 16px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
}

/*   advantage   */

.advantage_box {
  width: 100%;
  height: 692px;
  background-image: url('https://ckscm.oss-cn-shenzhen.aliyuncs.com/official_website_material/advantage_back.png');
  background-position: center;
  background-size: cover;
  margin-top: 120px;
  padding: 100px 150px;
  box-sizing: border-box;
}

.main_title {
  text-align: center;
  font-size: 36px;
  color: #ffffff;
}

.advantage_title_box {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.line {
  width: 160px;
  border-top: 1px solid #fff;
}

.line_box {
  display: flex;
  align-items: center;
}

.line_title {
  margin: 20px 30px;
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
}

.subtitle {
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
}

.advantage_list_box {
  margin-top: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.advantage_item_box {
  display: flex;
  align-items: center;
  flex-direction: column;
  width: 274px;
}

.advantage_item_icon {
  width: 139px;
  height: 117px;
}

.advantage_item_title {
  font-size: 22px;
  font-family: Source Han Sans CN-Bold, Source Han Sans CN;
  font-weight: bold;
  color: #ffffff;
  margin-top: 40px;
}

.advantage_item_subtitle {
  margin-top: 30px;
  font-size: 16px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
}

/* news */

.news_big_box {
  /*height: 1089px;*/
  background: #f8f8f8;
  /*margin-top: 120px;*/
  padding: 100px 160px;
  box-sizing: border-box;
}

.news_title_box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.news_content_box {
  display: flex;
  justify-content: center;
  margin-top: 60px;
}

.topping_news_box {
  padding: 40px;
  width: 760px;
  height: 703px;
  background: #ffffff;
  box-shadow: 0 3px 12px 1px rgba(0, 0, 0, 0.16);
  border-radius: 10px 10px 10px 10px;
}

.topping_news_content {
  margin-top: 40px;
}

.topping_news_title_box {
  display: flex;
  align-items: center;
}

.title_icon_box {
  width: 6px;
  height: 28px;
  background: #eed129;
  border-radius: 5px 5px 5px 5px;
  margin-right: 25px;
}

.topping_news_title {
  font-size: 28px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  width: 400px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tag_and_time_box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 30px;
}

.news_tag {
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
}

.news_time {
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
}

.news_content_abstract {
  font-size: 22px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 40px;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  width: 100%;
}

.news_list_box {
  display: flex;
  /*flex-direction: column;*/
  /*margin-left: 80px;*/
  /*flex: 1;*/
}

.news_item {
  padding: 30px 40px;
  display: flex;
  justify-content: space-between;
  width: 760px;
  height: 209px;
  background: #ffffff;
  box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.1);
  border-radius: 10px 10px 10px 10px;
}

.news_item + .news_item {
  margin-top: 40px;
}

.news_item_left {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  align-content: flex-start;
  justify-content: space-between;
}

.month_day {
  font-size: 30px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
}

.year {
  font-size: 18px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  margin-top: 20px;
}

.news_item_line {
  width: 77px;
  height: 1px;
  background: #000000;
  opacity: 0.5;
}

.news_item_tag {
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
}

.news_item_right {
  width: 564px;
}

.news_item_abstract_content {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news_item_title {
  font-size: 20px;
  font-family: Source Han Sans CN-Bold, Source Han Sans CN;
  font-weight: bold;
  color: #000000;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news_item_abstract {
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 30px;
  word-break: break-all;
}

/* about */
.about_big_box {
  margin-top: 120px;
}

.about_title_box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about_content_box {
  margin-top: 60px;
  display: flex;
  flex-wrap: wrap;
}

.about_item_box {
  width: 50%;
  height: 447px;
}

.about_item_img {
  width: 100%;
  height: 447px;
}

.about_item_box img {
  width: 100%;
  /* height: 100%; */
}

.about_item_introduce_box {
  padding: 70px 92px;
}

.introduce_title {
  font-size: 32px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  text-align: center;
}

.introduce_subtitle {
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 20px;
  text-align: center;
}

.introduce_text {
  display: inline-block;
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 30px;
  text-indent: 2em;
}

.about_item_network_box {
  padding: 87px 92px;
}

.network_title {
  font-size: 32px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  text-align: center;
}

.network_subtitle {
  font-size: 20px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 20px;
  text-align: center;
}

.network_text {
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 30px;
  text-align: center;
  line-height: 30px;
}

/* guarantee */

.guarantee_box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  /*padding: 63px 263px;*/
  padding: 40px 60px;
  height: 180px;
  background: #f8f8f8;
  margin-top: 160px;
  width: 100%;
}

.guarantee_item_box {
  display: flex;
  align-items: center;
}

.guarantee_item_box img {
  margin-right: 20px;
}

.guarantee_text_box {
}

.guarantee_title {
  font-size: 18px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
}

.guarantee_subtitle {
  font-size: 16px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #000000;
  margin-top: 10px;
}

/* stories */

.stories_big_box {
  margin-top: 120px;
}

.stories_title_box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stories_list_box {
  margin-top: 80px;
  padding: 0 100px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.stories_item_box {
  margin-bottom: 60px;
  display: flex !important;
  flex-direction: column;
  align-items: center;
}

.stories_item_title {
  text-align: center;
  font-size: 28px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  margin-top: 40px;
}

.stories_item_box img {
  width: 370px;
  height: 230px;
  border-radius: 10px;
}

/* foot */

.foot_big_box {
  width: 100%;
  height: 310px;
  background-image: url('https://ckscm.oss-cn-shenzhen.aliyuncs.com/official_website_material/foot_back.png');
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 65px 200px 65px 100px;
}

.ck_info {
  font-size: 18px;
  font-family: Source Han Sans CN-Light, Source Han Sans CN;
  font-weight: 300;
  color: #ffffff;
  margin-left: 70px;
}

.info_text {
  margin-top: 20px;
}

.contact_way_box {
  margin-top: 48px;
}

.contact_way_item {
  display: flex;
  align-items: center;
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
}

.contact_way_item + .contact_way_item {
  margin-top: 22px;
}

.contact_way_item img {
  margin-right: 13px;
}

.contact_title {
  font-size: 30px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
  margin-left: 10px;
}

.code_box {
  display: flex;
  align-items: center;
  flex-direction: column;
}

.code_box_title {
  font-size: 30px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #ffffff;
}

.code_img {
  width: 150px;
  height: 150px;
  margin-top: 30px;
}

@media screen and (min-width: 1740px) and (max-width: 1920px) {
  .server_list {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 100px;
    margin-top: 130px;
  }

  .server_item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 340px;
    height: 500px;
    background: #ffffff;
    box-shadow: 0 3px 12px 1px rgba(0, 0, 0, 0.16);
    border-radius: 4px;
  }

  .item_server_box {
    width: 100%;
    height: 320px;
  }

  .server_item_title {
    margin-top: 30px;
  }
}

>>> .layui-col-md3 {
  width: 23% !important;
}

.news_right_box {
  display: flex;
  flex-direction: column;
  margin-left: 80px;
}

.news_list_right_img {
  width: 100%;
  height: 295px;
}

.language_box {
  margin-left: 30px;
  font-size: 20px;
}

#ID-dropdown-language {
  display: flex;
}

.language_change {
  width: 1em;
}