.header-background{width:100%;height:440px;background-image:linear-gradient(180deg,#FFFFFF 0%,#EFF7FF 100%)}
.main-box{position:relative;margin:0 auto;width:1200px}
.round-1{width:600px;height:600px;border-radius:100%;background-color:#fff;position:absolute;top:-463px;left:-487px}
.round-2{width:350px;height:350px;border-radius:100%;background:#DFF6FF;position:absolute;top:-236px;left:-372px}
.round-3{width:300px;height:300px;border-radius:100%;background:#E4F3FF;position:absolute;right:-360px;bottom:-218px}
.download-box{display:flex;justify-content:space-between;align-items:center}
.download-box h1{font-size: 42px;color: #1F2238;font-weight: 600;padding-top: 26px;}
.download-box .download-desc{font-size: 20px;color: #1F2238; line-height: 32px;font-weight: 200;padding-top: 10px;}
.download-box .follow-box{padding-top: 20px;}
.download-box-left{}
.download-box-right{}
.download-box-right-icon{width:300px;height:262px;position:relative;background-image:url("img_downloadcenterbg.png");background-repeat:no-repeat;background-position:center;background-size:contain;margin-top:51px}
.product-choose-wrap{box-shadow:0px 4px 10px 0px rgba(100,161,155,0.2)}
.product-choose-box{height:66px;display:flex;align-items:center;justify-content:space-between;}
.product-choose-single{margin-right:50px;font-size:16px;color:#333759}
.product-choose-single:first-child{margin-left:25px}
.product-choose-single-active{font-size:16px;color:#116DF7}
.product-list-wrap{padding:40px 0 90px}
.upgrade-bar{margin:0 auto;width:1200px;height:66px;background:#FFF5EF;border-radius:10px;display:flex;justify-content:center;align-items:center}
.upgrade-bar span{font-size:16px;color:#FF781F;margin-right:50px}
.upgrade-bar a{padding:6px 20px;background:#FF781F;box-shadow:0px 10px 20px 0px rgba(255,120,31,0.2);border-radius:10px;font-size:18px;color:#FFFFFF}
.product-list-box{margin-top:40px;display:flex;flex-wrap:wrap;justify-content:space-between}
.product-single{width:578px;height:218px;border:1px solid rgba(232,232,235,1);border-radius:10px;display:flex;margin-bottom:40px}
.product-single-icon{margin:24px 40px 0 24px}
.product-single-content{}
.product-single-title{font-size:20px;color:#1F2238;line-height:24px;font-weight:600;margin-top:20px}
.product-single-phrase{font-size:14px;color:#1F2238;line-height:20px;font-weight:200;margin-top:9px}
.product-single-info{font-size:12px;color:#566368;font-weight:200;margin-top:16px}
.product-single-info span{margin-right:40px}
.product-single-platforms{font-size:12px;color:#566368;font-weight:200;margin-top:8px}
.link-box{margin-top:20px;display:flex;align-items:center}
.link-box .free-download{display:block;width:180px;height:38px;line-height:38px;border:1px solid #116DF7;border-radius:6px;text-align:center;font-size:14px;color:#116DF7;margin-right:40px}
.free-download:hover {background-color:#116DF7;color:#fff;}
.link-box .portable-version{color:#116DF7}
.portable-version:hover{text-decoration:underline;}