body,div ul,h1,h2,h3,h4,h5,h6,html,li,p{margin:0;padding:0}ul{list-style:none}a{text-decoration:none}h1,h2,h3,h4,h5,h6{font-weight:400}html{font-size:62.5%}.top{height:38px;position:relative}.top .nav{width:100%;height:38px;background:#fff;line-height:38px;position:fixed;z-index:999;border-bottom:1px solid #eaeaea}.top .logo{float:left}.logo1{color:#f7931e;margin-left:15px}.logo1,.logo2{font-size:2.4rem}.logo2{color:#422f2a}.top .top-r{height:44px;float:right;margin-right:15px;display:flex;justify-content:center;align-items:center}.top-r .qq{height:20px;line-height:18px;font-size:1.2rem;text-align:right}.qq .icon-qq{color:#422f2a;margin-right:3px;font-size:12px}.cust-service{width:55px}.top-r .burger{width:20px;height:20px;margin-left:10px;display:flex;flex-direction:column;cursor:pointer}.burger .x,.burger .y,.burger .z{width:20px;height:2px;border-radius:100px;background:#422f2a}.burger .x{margin-bottom:7px}.burger .y{margin-bottom:6px}.menu{width:100%;height:1000px;background:#241f1e;position:fixed;top:38px;display:none;z-index:999}.menu .close{padding-right:9.5px;padding-top:9.5px;text-align:right;font-size:2.1rem;color:#fff;cursor:pointer}.menu ul{margin-left:58px;margin-right:57px;margin-top:31px}.menu li{height:51px;line-height:51px;text-align:center;border-bottom:1px solid hsla(0,0%,100%,.5)}.menu li:last-child{border-bottom:none}.menu li a{font-size:1.8rem;color:#fff;letter-spacing:0}.ad,.menu li a{font-family:PingFangSC-Regular}.ad{height:1448px;background:#241f1e;text-align:center}.ad h4{font-size:2rem;color:#fff;letter-spacing:1.6px;line-height:22px;padding-top:35px}.ad p{font-size:1.2rem;color:#fff;line-height:13px;margin-top:10px}.ad .step1{margin-top:20px;width:232px}.ad .step1,.ad .step2{height:262px;line-height:262px;position:relative;left:50%;transform:translateX(-50%);z-index:5}.ad .step2{margin-top:30px;width:287px}.ad .step3{width:283px}.ad .step3,.ad .step4{margin-top:30px;height:263px;line-height:263px;position:relative;left:50%;transform:translateX(-50%);z-index:5}.ad .step4{width:288px}.step1 img,.step2 img,.step3 img,.step4 img{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}.step1 .img1{width:134px}.step2 .img2{width:229px}.step3 .img3{width:273px}.step4 .img4{width:233px}.step2 .icon-icon-test2,.step4 .icon-icon-test1{font-size:24.7rem}.step1 .icon-icon-test,.step3 .icon-icon-test3{font-size:25.7rem;position:absolute;left:50%;transform:translateX(-50%)}.ad h5{font-size:1.4rem;color:#fff;letter-spacing:1.12px;line-height:22px;margin-top:18px}.footer{background:#2d2a2a;text-align:center}.footer .ft-logo{padding-top:23px;width:85px;margin:0 auto;border-bottom:1px solid #f7931e}.ft-logo .iconfont{font-size:20px}.ft-logo .f-logo1{color:#f7931e}.ft-logo .f-logo2{color:#fff}.footer .ft-desc{font-family:PingFangSC-Light;font-size:12px;color:#fff;letter-spacing:0;line-height:12px;margin-top:5px}.footer .copyright{margin-top:20px;font-size:1.2rem;color:#fff;padding-bottom:30px}.copyright .list_container{display:flex;justify-content:center}.copyright p{margin-right:10px}.copyright p a,.copyright p a:active,.copyright p a:hover,.copyright p a:link,.copyright p a:visited{color:#fff}@media screen and (max-width:370px){.logo .logo-txt{display:none}.footer .ft-logo{padding-top:18px}.footer .copyright{margin-top:10px}}