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.item-bg{display:block;width:100%;height:12.5rem;background-size:100% 100%}.first-sec .first-con-item .item-content{padding:1.75rem 1.25rem}.first-sec .first-con-item .item-con-tit{font-size:1.63rem;margin-bottom:1rem;font-weight:bold;color:#474F64}.first-sec .first-con-item .item-con-txt{color:#737c94;font-size:1.38rem}.second-sec{background-color:#000;background:url("../images/second_bg.png");background-size:100% 100%}.second-sec .sec-title{color:#fff;margin-bottom:6rem}.second-sec .sec-content .second-con-item{display:inline-block;text-align:center;width:22.5rem;vertical-align:middle}.second-sec .sec-content .item-bg-1{background:url("../images/second_sec_1.png")}.second-sec .sec-content .item-bg-2{background:url("../images/second_sec_2.png")}.second-sec .sec-content .item-bg-3{background:url("../images/second_sec_3.png")}.second-sec .sec-content .item-bg{display:block;width:12.5rem;height:12.5rem;margin:0 auto 2rem;background-size:100% 100%}.second-sec .sec-content .item-con-txt{font-size:2.5rem;color:#DEDEE8}.second-sec .sec-content .item-arrow{width:3rem;height:3rem;display:inline-block;text-align:center;vertical-align:middle;background:url("../images/second_sec_arrow.png");background-size:100% 100%;margin-top:-4.5rem}.third-sec{background-color:#fff}.third-sec .section{padding:5rem 3rem 6.25rem}.third-sec .third-left{width:34.69rem;display:inline-block;vertical-align:middle}.third-sec .left-item{position:relative;color:#737C94;font-size:1.38rem;line-height:1.5;margin-bottom:3.75rem}.third-sec .left-item:after{content:"";display:block;width:0.6rem;height:0.6rem;border-radius:50%;position:absolute;left:-1rem;top:0.7rem;background:#3F76EE}.third-sec .third-right{display:inline-block;vertical-align:middle;width:26rem;height:26rem;background:url("../images/third_sec_1.png");background-size:100% 100%;margin-left:5.7rem}.forth-sec{background-color:#f5f6fa}.forth-sec 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.item-bg-3{background:url("../images/fifth_sec_3.png");width:3.94rem;height:4.47rem}.fifth-sec .item-bg-4{background:url("../images/fifth_sec_4.png");width:4.06rem;height:4.49rem}.fifth-sec .item-bg{display:inline-block;margin-right:0.5rem;background-size:100% 100%;vertical-align:middle}.fifth-sec .fifth-item-right{width:29rem;display:inline-block;vertical-align:middle}.fifth-sec .fifth-item-right .tit{margin-bottom:1.5rem;font-weight:bold;font-size:1.5rem;color:#474F64}.fifth-sec .fifth-item-right .txt{margin-top:1rem;font-size:1.2rem;color:#737C94}.sixth-sec{background-color:#f5f6fa}.sixth-sec .six-content{padding-left:29rem}.sixth-sec .free-left{top:-4rem;left:-2rem;background:url("../images/six_free_left.png");background-size:100% 100%}.sixth-sec .six-content{box-shadow:-10px 20px 20px 0 rgba(201,207,219,0.4);border-radius:0.5rem;background:#fff;position:relative;overflow:hidden}.sixth-sec 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0.8rem;padding-bottom:3rem;text-align:center}.seventh-sec .item-bg-1{background:url("../images/seven_sec_1.png")}.seventh-sec .item-bg-2{background:url("../images/seven_sec_2.png")}.seventh-sec .item-bg{display:block;width:100%;height:21.38rem;background-size:100% 100%;margin-bottom:2rem}.seventh-sec .item-con-tit{margin-bottom:1.5rem;color:#474F64;font-size:2rem;font-weight:bold}.seventh-sec .item-con-txt{font-size:1.63rem;color:#737C94;margin-top:1rem}.footer{position:fixed;width:100%;left:0;bottom:0;height:8.75rem;line-height:8.75rem;text-align:center;background:url("../images/footer_bg.png");background-size:100% 100%;z-index:10}.footer .footer-section{display:inline-block}.footer .footer-logo{display:inline-block;margin-right:3rem;width:15.27rem;height:3.6rem;background:url("../images/footer_logo.png");background-size:100% 100%;vertical-align:middle}.footer .footer-btn{display:inline-block;width:15rem;height:5rem;line-height:5rem;border-radius:0.5rem;border:1px solid #fff;color:#fff;font-size:2.25rem;cursor:pointer;vertical-align:middle;text-decoration:none}@media only screen and (min-width: 768px) and (max-width: 1160px){.section{width:90%;margin:auto}.sec-content{text-align:center}.first-sec .first-con-item{width:43%;margin-bottom:2rem;margin:1rem}.first-sec .first-con-item .item-bg{height:20rem}.first-sec .first-con-item:nth-child(2n+1){margin-left:0}.second-sec .sec-content .second-con-item{width:20.5rem}.third-sec .left-item{text-align:left}.third-sec .third-left{width:30.69rem}.forth-sec .forth-con-item{width:31%;margin-bottom:3rem}.fifth-sec .fifth-con-item{width:34rem;margin-left:0.1rem;margin-right:0.1rem;vertical-align:top;text-align:left}.fifth-sec .fifth-item-right{width:23rem}.sixth-sec .sub-title{font-size:1.6rem}.sixth-sec .six-right{text-align:left}.seventh-sec .sub-title{font-size:1.6rem}.seventh-sec .item-bg{height:22rem}.seventh-sec .seven-con-item{width:32.55rem}}@media screen and (max-width: 767px){.section{width:90%;padding:3rem 0}.banner-box{padding:2.5rem 0}.banner-tit{height:5.4rem;line-height:1;font-size:3.5rem;margin:0 auto 0.25rem}.banner-sub-tit{font-size:2rem;margin-bottom:2.5rem}.banner-btn{width:14rem;height:4.25rem;line-height:4.25rem;font-size:2rem}.sec-title{font-size:2rem;margin-bottom:2.5rem;padding-bottom:1.5rem}.sub-title{margin-top:1rem;font-size:1.4rem}.free-item{width:5rem;height:3.6rem;line-height:1.9;font-size:1.6rem}.first-sec .sec-title,.third-sec .sec-title,.forth-sec .sec-title,.fifth-sec .sec-title,.sixth-sec .sec-title,.seventh-sec .sec-title{height:auto;min-height:0}.first-sec{text-align:center}.first-sec .first-con-item{width:49%;margin-left:0;margin-bottom:2rem;text-align:left}.first-sec .first-con-item .item-content{padding:1rem}.first-sec .first-con-item .item-bg{height:10rem}.first-sec .first-con-item .item-con-tit{font-size:1.4rem;margin-bottom:0.6rem}.first-sec .first-con-item .item-con-txt{font-size:1.2rem}.second-sec .sec-title{margin-bottom:3rem}.second-sec .sec-content{text-align:center}.second-sec .sec-content .item-con-txt{font-size:1.2rem}.second-sec .sec-content .item-bg{width:4rem;height:4rem}.second-sec .sec-content .second-con-item{width:22%}.third-sec .sec-content{text-align:center}.third-sec .third-right{margin-left:0}.third-sec .third-left{width:100%;text-align:left}.third-sec .left-item{margin-bottom:1.5rem}.third-sec .left-item:last-child{margin-bottom:0}.forth-sec .sec-content{text-align:center}.forth-sec .forth-con-item{width:32%}.forth-sec .item-con-txt{font-size:1rem;margin-top:0.6rem}.forth-sec .item-con-tit{font-size:1.4rem;margin-bottom:1rem}.forth-sec .item-bg{width:3rem;height:3rem;margin:0 auto 1rem}.fifth-sec .fifth-con-item{width:100%;margin:0 0 1.5rem}.fifth-sec .fifth-item-right{width:100%}.fifth-sec .item-bg{display:none}.sixth-sec .six-content{padding-left:0}.sixth-sec .six-left{display:none}.sixth-sec .free-left{top:-3rem}.seventh-sec .free-right{top:-3rem}.seventh-sec .sec-content{text-align:center}.seventh-sec .seven-con-item{width:49%;margin:0;padding-bottom:1.2rem}.seventh-sec .sub-title{font-size:1.4rem}.seventh-sec .item-bg{height:10rem;margin-bottom:1rem}.seventh-sec .item-con-tit{font-size:1.4rem;margin-bottom:1rem}.seventh-sec .item-con-txt{font-size:1.2rem;margin-top:0.8rem}.footer{height:6rem;line-height:6rem}.footer .footer-logo{width:9rem;height:2rem}.footer .footer-btn{width:10rem;height:3.6rem;line-height:3.6rem;font-size:1.6rem}}