#S1{padding:60px 0}.xLr{margin:16px auto}.xLr:nth-child(even){direction:rtl}.xLr>div{padding:0 12px;direction:ltr}.xLr>div:first-child{width:calc(45% - 4px)}.xLr>div:last-child{width:calc(55% - 4px)}.xLr>div:last-child>div{margin:auto 0}.S1_img{width:100%;max-width:550px}.S1_tt{font-size:28px;margin-bottom:40px}S1_st{font-size:16px}.S1_cn{font-size:13px;color:#666;line-height:2}@media (max-width: 960px){.S1_tt{font-size:22px;margin-bottom:22px}S1_st{font-size:14px}}@media (max-width: 750px){.xLr{margin:60px 0}.xLr>div{width:100%!important;text-align:center}#S1{padding:0}.S1_tt{font-size:22px;margin-bottom:20px}.S1_cn{font-size:12px;text-align:left}}