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.nav_right .nav_icon{-webkit-box-align:center;-ms-flex-align:center;-webkit-align-items:center;align-items:center;color:#222;cursor:pointer;display:grid;justify-items:center;line-height:1.1em;margin-right:2rem;padding-right:2rem;place-items:center;text-overflow:ellipsis;white-space:nowrap}.xd_nav .nav_right .nav_icon.selection{margin-right:3rem;position:relative}.xd_nav .nav_right .nav_icon.down,.xd_nav .nav_right .nav_icon.up{position:relative}.xd_nav .nav_right .nav_icon.down:after,.xd_nav .nav_right .nav_icon.up:after{content:"";height:1.2rem;position:absolute;right:.6rem;top:50%;-webkit-transform:translateY(-50%);transform:translateY(-50%);width:1.2rem}.xd_nav .nav_right .nav_icon.down:after{background:url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGZpbGw9Im5vbmUiIHdpZHRoPSIxNCIgaGVpZ2h0PSIxNCI+PHBhdGggZD0iTTMuMTk3IDQuMjE2YS42NzcuNjc3IDAgMCAwLS45OTIgMCAuNzY2Ljc2NiAwIDAgMCAwIDEuMDQ0bDQuMjkzIDQuNTE3YS42NzkuNjc5IDAgMCAwIDEuMDA0IDBsNC4yOTMtNC41MTdhLjc2Ni43NjYgMCAwIDAgMC0xLjA0NC42NzcuNjc3IDAgMCAwLS45OTIgMEw3IDguMjE4IDMuMTk3IDQuMjE2eiIgZmlsbC1ydWxlPSJldmVub2RkIiBmaWxsPSIjMjIyIi8+PC9zdmc+) no-repeat 50%;background-size:70% 70%}.xd_nav .nav_right 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.lang_cnt{color:#222;height:3.5rem;margin-left:1rem;position:relative;width:12rem}.xd_nav .nav_right .lang_cnt:hover{color:#242424}.xd_nav .nav_right .lang_cnt .lang_select{-webkit-box-pack:justify;-ms-flex-pack:justify;cursor:pointer;height:3.5rem;-webkit-justify-content:space-between;justify-content:space-between;position:relative;text-align:center;width:12rem;z-index:2}.xd_nav .nav_right .lang_cnt .lang_select,.xd_nav .nav_right .lang_cnt .lang_select span{-webkit-box-align:center;-ms-flex-align:center;-webkit-align-items:center;align-items:center;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex}.xd_nav .nav_right .lang_cnt .lang_select span{-webkit-box-pack:end;-ms-flex-pack:end;-webkit-justify-content:flex-end;justify-content:flex-end;text-align:right;width:10.5rem}.xd_nav .nav_right .lang_cnt .lang_select span:before{background:url(data:image/svg+xml;base64,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) 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.nav_right .lang_cnt .lang_opts .lang_opt span{display:block;height:3rem;line-height:3rem;text-align:center;width:12rem}.btn_download{color:#222;cursor:pointer;margin:0 auto;position:relative;width:auto}.btn_download .btn_els{-webkit-box-align:center;-ms-flex-align:center;-webkit-align-items:center;align-items:center;background-color:inherit;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;height:100%;position:relative;width:100%;z-index:15}.btn_download.margintop{margin-top:1rem}.btn_download.marginleft{margin-left:3rem}.btn_download.blue{background-color:#0170fe}.btn_download.green{background-color:#32c159;color:#fff}.btn_download.black{background-color:#000;color:#fff}.btn_download img{width:18rem}.btn_download .qrcode{background-color:#fff;border-radius:10px;-webkit-box-shadow:0 0 3px 2px hsla(0,0%,50%,.1);box-shadow:0 0 3px 2px 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h4{color:#202020;font:2.9rem PingFang SC,Microsoft YaHei,sans-serif,Arial;font-weight:400;width:22em}.part_title h3{width:100%}.part_title h4{font-size:1.8rem;padding-bottom:.1em;padding-top:1em;text-align:left;width:100%}.part_title.padding_left{padding-left:1em}.part_content{font-size:1.6rem;width:100%}.part_content strong{color:#ff7d00;font-weight:400;padding-top:.5em}.part_content strong.t_center{display:block;text-align:center;width:100%}.part_content strong.tt{color:#222;font-weight:700}.part_content p.part2_cnt{line-height:2em}.part_bg{background-color:#6ce9ef;left:0;opacity:.3;position:absolute;top:0;-webkit-transform:rotate(30deg);transform:rotate(30deg)}.part_content h3{color:#202020;font:1.8rem PingFang SC,Microsoft YaHei,sans-serif,Arial;font-weight:400;padding-top:.5em;text-align:center;width:100%}.part_content ol,.part_content ul{font-size:1.2rem;list-style:disc;padding-left:2rem;padding-top:2em}.part_content ol.no_padding_top,.part_content 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.nav_right .nav_icon.up:after{content:"";height:1.2rem;position:absolute;right:.6rem;top:50%;-webkit-transform:translateY(-50%);transform:translateY(-50%);width:1.2rem}.footer .nav_right .nav_icon.down:after{background:url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGZpbGw9Im5vbmUiIHdpZHRoPSIxNCIgaGVpZ2h0PSIxNCI+PHBhdGggZD0iTTMuMTk3IDQuMjE2YS42NzcuNjc3IDAgMCAwLS45OTIgMCAuNzY2Ljc2NiAwIDAgMCAwIDEuMDQ0bDQuMjkzIDQuNTE3YS42NzkuNjc5IDAgMCAwIDEuMDA0IDBsNC4yOTMtNC41MTdhLjc2Ni43NjYgMCAwIDAgMC0xLjA0NC42NzcuNjc3IDAgMCAwLS45OTIgMEw3IDguMjE4IDMuMTk3IDQuMjE2eiIgZmlsbC1ydWxlPSJldmVub2RkIiBmaWxsPSIjZmZmIi8+PC9zdmc+) no-repeat 50%;background-size:70% 70%}.footer .nav_right 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- 14rem);-webkit-justify-content:flex-start;justify-content:flex-start;margin:0 4%;overflow:hidden;padding-bottom:4rem;padding-top:4rem;width:92%}.layout_content .msg_list{background-color:#fff;border-radius:16px;height:100%;left:0;position:relative;top:0;width:100%}.layout_content .msg_list.tab_content{display:none}.layout_content .msg_list .msg_item{background-color:#fff;border-radius:16px;left:0;position:absolute;top:0;-webkit-transition:all 1s;transition:all 1s;width:100%}.layout_content .msg_list .msg_item.msg_part2{-webkit-box-pack:start;-ms-flex-pack:start;-webkit-box-align:center;-ms-flex-align:center;-webkit-align-items:center;align-items:center;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-justify-content:flex-start;justify-content:flex-start}.layout_content .msg_list .msg_item.msg_part2 img{height:-webkit-fit-content;height:-moz-fit-content;height:fit-content;width:38.8%}.layout_content .msg_list .msg_item.msg_part2 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.stars 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.user_msg{line-height:2em;padding:1em 2em}.layout_bottom{-webkit-box-pack:center;-ms-flex-pack:center;-webkit-box-align:center;-ms-flex-align:center;-webkit-align-items:center;align-items:center;bottom:0;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;height:4rem;-webkit-justify-content:center;justify-content:center;left:0;position:absolute;width:100%}.layout_bottom .dot{background-color:#ffe4ba;border-radius:.4rem;height:.6rem;margin:0 .6rem;-webkit-transition:all .7s;transition:all .7s;width:.6rem}.layout_bottom .dot.active{background-color:#ff7d00;-webkit-transition:all .5s;transition:all .5s;width:1.98rem}.toast{background-color:#fff;border:1px solid #ccc;border-radius:3px;left:50%;min-width:150px;padding:1rem;position:absolute;text-align:center;top:34%;-webkit-transform:translate(-50%);transform:translate(-50%)}#app,.home,.main{height:100%;width:100%}#app{overflow-y:auto;position:relative}.part1{background:#c7f5f5;min-height:450px;padding:6rem 10% 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2rem;width:100%}.part_btn .devices_cnt{padding:2rem 0 1.6rem}.part_btn .devices_cnt .devices{-webkit-box-pack:center;-ms-flex-pack:center;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-justify-content:center;justify-content:center}.part_btn .devices_cnt .devices .device{width:6rem}.part_btn .devices_cnt .devices .device 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