header .top-box .info .left span,header .top-box .info .left span a, header .top-box .info .left span a:visited,header .top-box .info .right ul.sj li a{color:var(--fontcolor)}
main.index section.about-us .block-box .pic iframe{height:100%}
@media (max-width:768px){main.index section.about-us .block-box .content,main.index section.about-us .block-box .pic{width:100%;max-width:100%}
main.index section.about-us{height:auto}
main.index section.about-us .block-box{flex-wrap:wrap}
main.index section.about-us .block-box .pic iframe{width:100%;aspect-ratio:16 / 9}}
.about-us .mb{background:none;}