@-webkit-keyframes drawingfont{to{background-position-x:100%}}@keyframes drawingfont{0%{background-position-x:0}20%{background-position-x:20%}40%{background-position-x:40%}60%{background-position-x:60%}80%{background-position-x:80%}to{background-position-x:100%}}.popover{position:absolute;display:block}.popover{top:0;left:0;z-index:1060;max-width:276px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-style:normal;font-weight:400;line-height:1.5;text-align:left;text-align:start;text-decoration:none;text-shadow:none;text-transform:none;letter-spacing:normal;word-break:normal;word-spacing:normal;white-space:normal;line-break:auto;font-size:.875rem;word-wrap:break-word;background-color:#fff;background-clip:padding-box;border:1px solid rgba(0,0,0,.2);border-radius:.3rem}.bs-popover-auto[x-placement^=top],.bs-popover-top{margin-bottom:.5rem}.bs-popover-auto[x-placement^=right],.bs-popover-right{margin-left:.5rem}.bs-popover-auto[x-placement^=bottom],.bs-popover-bottom{margin-top:.5rem}.bs-popover-auto[x-placement^=bottom] .popover-header::before,.bs-popover-bottom .popover-header::before{position:absolute;top:0;left:50%;display:block;width:1rem;margin-left:-.5rem;content:"";border-bottom:1px solid #f7f7f7}.bs-popover-auto[x-placement^=left],.bs-popover-left{margin-right:.5rem}.popover-header{padding:.5rem .75rem;margin-bottom:0;font-size:1rem;background-color:#f7f7f7;border-bottom:1px solid #ebebeb;border-top-left-radius:calc(.3rem - 1px);border-top-right-radius:calc(.3rem - 1px)}.popover-header:empty{display:none}.popover-body{padding:.5rem .75rem;color:#212529}.embed-responsive{position:relative;display:block;width:100%;padding:0;overflow:hidden}.embed-responsive::before{display:block;content:""}.embed-responsive embed,.embed-responsive iframe,.embed-responsive object{position:absolute;top:0;bottom:0;left:0;width:100%;height:100%;border:0}.embed-responsive-16by9::before{padding-top:56.25%}.d-none{display:none!important}.d-block{display:block!important}.text-right{text-align:right!important}.text-center{text-align:center!important}.popbox{width:100vw;height:100vh;position:fixed;z-index:9999;top:0;left:0;background-color:rgba(0,0,0,.5);display:none}.popbox .content{position:relative;top:20%;right:0;left:0;margin:auto}.popbox .close{position:absolute;width:20px;top:15px;right:15px;opacity:1}.popbox .close svg{color:#000}.newsletter-popbox .content{width:90vw;max-width:400px;padding:20px;background-color:#fff;border:2px solid #66ac35;border-radius:15px}body{line-height:1.85}.float-right{float:right!important}.text-muted{color:#6c757d!important}ol.chinese-formal{list-style-type:trad-chinese-formal!important}ol.chinese-informal{list-style-type:trad-chinese-informal!important}.enum{margin-top:4rem}.enum h4{font-size:1rem;margin-bottom:2rem}.enum>li{margin-bottom:5rem!important}.enum li{padding-top:.2rem;padding-bottom:.2rem}.li-extend>li{margin-bottom:1.5rem}.list-tyle-none{list-style:none!important;padding-left:0}.list-tyle-none ul{list-style-type:disc}.list-tyle-none ul ul{list-style-type:square}.enum h4,main .page-title h2,ol.enum>li{font-weight:700}ol.enum>li p,ol.enum>li>ol{font-weight:400}.text-block,.text-block>[class*=title]{letter-spacing:.075em}.card .card-subtitle,dl.qa dt{margin-bottom:.5rem}a.card{color:#342c2c}a.card:hover{text-decoration:none}a.card:hover .card-title{color:#66ac35}.card-list .card{width:100%;margin-bottom:50px;letter-spacing:.075em;border-radius:0}.card-list .card-img-top{border-radius:0}.card-list .card-title{font-size:1rem}.card-list .card-img-top img{width:100%}.card-list .card-body{position:relative}.card-list:not(.paper) .card{border:0;background-color:transparent}.card-list:not(.paper) .card-body{padding-left:0;padding-right:0}.card-list.display{margin-bottom:50px}.card-list.display .card{max-width:330px;margin-bottom:0}.card-list.display .card-title{font-size:1.25em;font-weight:700}.card-list.paper{max-width:1030px}.card-list.paper .card{padding:1.5rem;border-color:#e5eaed}.card-list.paper .card:hover{box-shadow:0 3px 15px rgba(0,0,0,.16)}.card-list.paper .card-img-top{max-width:250px}.card-list.paper .card-img-top+.card-body{padding-top:1.5rem}.card-list.paper .card-body{width:100%;padding:0}.card-list.paper .card-body h5{margin-bottom:1rem}.card-list.media .card{width:100%}.card-list.media .card-title{line-height:1.5}.card-list.horizontal .card-title{font-size:1.25em}.card-list.gray .card:hover .card-img-top{-webkit-filter:none;filter:none}.card-list.gray .card-img-top{-webkit-filter:grayscale(100%);filter:grayscale(100%)}.card-list.animate .card:hover .card-img-top,.card-list.nav .card:hover .card-img-top{-webkit-animation:drawingfont .6s step-start forwards;animation:drawingfont .6s step-start forwards}.card-list.animate .card-img-top{background-position:0 center;background-size:cover}.card-flip .card-img-top:before,.card-list.animate .card-img-top:before{content:"";display:block;padding-top:100%}.card-list.nav{margin-bottom:160px;-ms-flex-pack:space-evenly;justify-content:space-evenly}.card-list.nav .card{border:0;margin-bottom:0}.card-list.nav .card-body{padding-top:0}.card-list.nav .card-title{text-align:center;font-size:1.125em}.card-list.row [class^=col-]{display:-ms-flexbox;display:flex;-ms-flex-pack:center;justify-content:center}.card-flip{width:100%;cursor:pointer;position:relative;transition:.6s;-webkit-transform-style:preserve-3d;transform-style:preserve-3d}.card-flip.flip-it{-webkit-transform:rotateY(180deg);transform:rotateY(180deg)}.card-flip .card{margin-bottom:0}.card-flip .card-img-top{position:relative}.card-flip .card-img-top img{position:absolute;top:0;left:0}.card-flip .back,.card-flip .front{-webkit-backface-visibility:hidden;backface-visibility:hidden}.card-flip .back{position:absolute;top:0;left:0;-webkit-transform:rotateY(180deg);transform:rotateY(180deg);height:100%}main .btn-outline-primary{background-color:#fff}main .page-title{font-size:2.188rem;text-align:center;margin:70px 0}main .page-title .subtitle{font-size:1.125rem;text-align:center;margin-top:18px}main .section-title{margin:0 auto 1.5rem;max-width:760px}main .section-title h3{font-size:1.5rem;line-height:1.75;display:inline-block;position:relative}main .section-title h3:after{content:"";display:block;position:absolute;width:102%;height:4px;background-image:url(data:image/png;base64,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);left:-1%;bottom:-5%;z-index:-1;transition:width 1s}main [deep-focus] h3:after{width:0%}main [deep-focus].on-focus h3:after{width:102%}main .point-title{font-size:1.25rem;line-height:1.75;text-indent:-1.6em;padding-left:1.6em}main .point-title:before{content:'';display:inline-block;border-radius:.313em;width:.438em;height:.438em;background-color:#000;position:relative;top:-.063em;left:.188em;margin-right:1.162em}main .block-title{font-size:1.25em}main .tags>*{display:inline-block;margin-right:.5em}main .tags>:hover{text-decoration:underline;color:#66ac35}main.page{padding-bottom:2.5em}main.page .text-block{max-width:760px;margin-left:auto;margin-right:auto;margin-bottom:5rem}main.page .text-block p{margin-bottom:20px}main.page .text-block+.btn-block{margin-top:-2rem}main.page .btn-block{margin-top:3rem;text-align:center}main.page>section{padding-bottom:180px}main.page>section:last-child{padding-bottom:100px}ul.text-muted{font-size:80%;list-style:none}ul.text-muted li{text-indent:-3.25em;margin-bottom:1em}dl.qa dd{margin-bottom:2.5rem}.sticky-bg .bg-context,.sticky-bg [data-bg]{transition:opacity 1s ease-in-out}.sticky-bg [data-bg]:not(img){cursor:pointer}.sticky-bg [data-bg]:not(img):hover{text-shadow:1px 1px 3px rgba(0,0,0,.16)}.sticky-bg .bg-context{width:100vw;height:calc(100vh - 66px);opacity:0;background-color:#000;position:absolute;top:0;left:0;z-index:-1}.sticky-bg .bg-context img{width:100%;height:100%;background:center/cover no-repeat;position:absolute;top:0;opacity:0;z-index:0}.sticky-bg .bg-context img.focus{opacity:.4;z-index:1}.sticky-bg.play h3{color:#fff}.sticky-bg.play [data-bg]:not(img){color:#fff;opacity:.4}.sticky-bg.play [data-bg]:not(img).focus,.sticky-bg.play [data-bg]:not(img):hover{opacity:1!important;text-shadow:none}.sticky-bg.play .bg-context,[deep-focus].on-focus{opacity:1}[deep-focus]{opacity:.5;transition:opacity .5s}@media (min-width:576px){.card-list.media{margin-left:-25px;margin-right:-25px}.card-list.media [class^=col]{padding-right:25px;padding-left:25px}.card-list.horizontal .card{-ms-flex-direction:row;flex-direction:row;margin-left:-25px;margin-right:-25px}.card-list.horizontal .card>*{padding:0 25px}.card-list.horizontal .card-img-top{-ms-flex:1 1 33.33333%;flex:1 1 33.33333%;max-width:33.33333%}main .page-title{margin:100px 0 70px}}@media (min-width:576px) and (max-width:991.98px){.card-list.horizontal .card>*{-ms-flex:0 0 50%;flex:0 0 50%;max-width:50%}}@media (min-width:768px){.d-md-none{display:none!important}.d-md-block{display:block!important}}@media (min-width:992px){.d-lg-none{display:none!important}.card-list.paper{margin-left:auto;margin-right:auto}.card-list.horizontal .card-body{max-width:60%}}@media (max-width:767.98px){.container{padding-left:7.467vw;padding-right:7.467vw}}