:root{
    --font-title:'宋体';
    --font-bold:'Montserrat-Bold';
    --font-wei:'微软雅黑';
    --font-re:'Montserrat-Regular';
    --font-light:'Montserrat-Light';
}
.ly_article_1 .editor_txt .about_us ul {  padding-inline-start: 0;}
.ly_article_1 .wide .article_title  { display: none;}
* { margin: 0; text-decoration: none; padding: 0; list-style: none; -webkit-transition: all .3s; -ms-transition: all .3s; -o-transition: all .3s; transition: all .3s;}
img { max-width: 100%; max-height: 100%;}
.public_img { font-size: 0; }
.clear{margin:0px auto; clear:both; height:0px; font-size:0px; overflow:hidden;}
.hover_img { overflow: hidden;}
.public_content_w1440 { margin: 0 auto; width: 1440px; max-width: 90%; }
.title_cn { color: #333333; font-size: 36px; font-family: var(--font-wei); letter-spacing: 1px;}


.banner .public_img { position: relative; height: 0; padding-top: 19.4793%;}
.banner .public_img img { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 100%; height: 100%; object-fit: cover;}

.bread_crumb a { font-size: 14px; font-family: var(--font-wei); color: rgba(0, 0, 0, .6);}
.bread_crumb { font-size: 14px; font-family: var(--font-wei); color: rgba(0, 0, 0, .6); padding: 27px 0;}

.about_us { padding-top: 44px; padding-bottom: 40px;}
.about_us .content_all { display: flex; justify-content: space-between; align-self: start; }
.about_us .content_all .about_us_side { width: calc( 100% - 43.8% - 104px);}
.about_us .content_all .about_us_side:first-child { width: 43.8%;}
.about_us .content_all .about_us_side .public_img { overflow: hidden; border-radius: 5px;}
.about_us .content_all .title_en { font-family: var(--font-wei); color: #333333; font-size: 28.64px; margin-bottom: 6px;}
.about_us .content_all .title_en span { color: #ffffff; background: #35b3e9; padding: 2px 4px; margin-right: 11px;}
.about_us .content_all .about_us_side .title_cn { margin-bottom: 43px;}
.about_us .content_all ul li { color: #666666; font-size: 18px; font-family: var(--font-wei); line-height: 1.7; letter-spacing: 1px;}
.about_us .content_all .about_us_side .public_img { position: relative; height: 0; padding-top: 58.844%;}
.about_us .content_all .about_us_side .public_img img{ position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 100%; height: 100%; object-fit: cover;}

.advantages { padding-top: 34px;}
.advantages .title_cn { text-align: center;}
.title_en_big { color: #999999; font-family: '思源宋体 CN'; text-transform: uppercase; margin-top: 15px; letter-spacing: 12.7px; text-align: center; font-size: 28.64px;}
.advantages .advantages_content { display: flex; justify-content: space-between; margin-top: 73px; align-items: center;}
.advantages .advantages_content .advantages_side { width: calc(100% - 49% - 50px);}
.advantages .advantages_content .advantages_side:first-child { width: 49%;}
.advantages .advantages_content .advantages_side:first-child .play  { position: relative;}
.advantages .advantages_content .advantages_side .text { display: flex; align-items: center;}
.advantages .advantages_content .text_left { font-family: var(--font-bold); color: rgba(217, 217, 217, .3); font-size: 163.22px; margin-right: 24px;}
.advantages .advantages_content .text_title { color: #333333; font-size: 24px; font-family: var(--font-wei); font-weight: bold;}
.advantages .advantages_content .text_brief { font-size: 18px; color: #666666; font-family: var(--font-wei); margin-top: 22px; line-height: 1.6;letter-spacing: 1px;}
.advantages .advantages_content .text { margin-top: 44px;}
.advantages .advantages_content .text:first-child { margin-top: 0;}
.advantages .advantages_content .advantages_side .public_img { position: relative; height: 0; padding-top: 106.578%; }
.advantages .advantages_content .advantages_side .public_img img{ position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 100%; height: 100%; object-fit: cover; }
.advantages .advantages_side .txt_box {cursor: pointer; position: absolute;  right: 30px; bottom: 19px;  margin: auto; width: 110px; height: 110px; background-color: rgba(255, 255, 255, 0.16); border-radius: 110px;}
.advantages .advantages_side .txt_box .t_button { position: absolute; top: 0; right: 0; bottom: 0; left: 0; margin: auto; width: 90px; height: 90px; background-color: #fff; border-radius: 90px;}
.advantages .advantages_side .txt_box .t_button i { position: absolute; top: 0; right: 0; bottom: 0; left: 7px; margin: auto; width: 0px; height: 0px; border-width: 17px 0 17px 25px; border-style: solid; border-color: transparent; border-left-color: #35b3e9;}
.ly_certificates_1 .wide .top_certificates_info .cer_content { color: #999999; font-family: '思源宋体 CN'; text-transform: uppercase; margin-top: 15px; letter-spacing: 12.7px; text-align: center; } 
.ly_certificates_1 .top_certificates_info .cer_title { letter-spacing: 1px; font-family: var(--font-wei);}
.ly_certificates_1 .wide.certificates_box .srcoll_list .srcoll_btn { background-color: transparent;}
.ly_certificates_1 .wide.certificates_box .srcoll_list .srcoll_btn::after { font-size: 38px; color: #f4f4f4;}
@media screen and (max-width:1600px) {
    .advantages .advantages_content .text_left { font-size: 120px;}
    .advantages .advantages_content .text_title { font-size: 20px;}
    .advantages .advantages_content .text_brief { font-size: 14px; margin-top: 15px;}
}


@media screen and (max-width:1440px) {
    .title_cn { font-size: 28px;}
    .about_us .content_all .about_us_side .title_cn { margin-bottom: 20px;}
    .bread_crumb { padding: 15px 0 ;}
    .about_us .content_all .title_en { font-size: 24px;}
    .about_us .content_all ul li { font-size: 16px;}
    .advantages .advantages_content { margin-top: 40px;}
    .title_en_big { font-size: 24px;}
}

@media screen and (max-width:1250px) {
    .about_us .content_all .about_us_side .title_cn { margin-bottom: 10px;}
    .title_cn { font-size: 24px;}
    .about_us .content_all .title_en { font-size: 20px;}
    .about_us .content_all ul li { font-size: 14px;}
    .advantages .advantages_content .text_left { font-size: 80px;}
    .advantages .advantages_content .text_title { font-size: 16px;}
    .advantages .advantages_content .text_brief { font-size: 13px;}
}

@media screen and (max-width:1000px) {
    .about_us .content_all { flex-direction: column-reverse;}
    .about_us .content_all .about_us_side { width: 100%;}
    .about_us .content_all .about_us_side:first-child  { width: 100%; margin-top: 40px;}
    .about_us { padding-top: 20px; padding-bottom: 20px;}
    .advantages .advantages_content { flex-direction: column;}
    .advantages .advantages_content .advantages_side:first-child { width: 100%; margin-top: 0;}
    .advantages .advantages_content .advantages_side { width: 100%; margin-top: 40px;}
    .advantages .advantages_content .advantages_side .text { margin-top: 20px;}
    .advantages .advantages_content .text_left { font-size: 60px;}
    .advantages .advantages_side .txt_box { width: 80px; height: 80px; right: 10px; bottom: 10px;}
    .advantages .advantages_side .txt_box .t_button { width: 60px;height: 60px;}
    .advantages .advantages_side .txt_box .t_button i  { border-width: 8px 0 8px 14px;}
    .title_en_big { font-size: 20px;}
}