.copy-btn,input[type=checkbox]{-webkit-appearance:none;outline:0}.category-item-action:hover,.markdown-body .btn,.markdown-body .btn:hover,a.fancybox:hover,body a,body a:hover{text-decoration:none}.banner{height:100%;position:relative;overflow:hidden;cursor:default;overflow-wrap:break-word}.copy-btn,.markdown-body details,.navbar .animated-icon,.qr-trigger,.scroll-down-bar,body a{cursor:pointer}.banner .mask{position:absolute;width:100%;height:100%;background-color:rgba(0,0,0,.3)}.banner .page-header{color:#fff;max-width:calc(960px - 6rem);width:80%}@media (max-width:575px){.banner .page-header,.banner .page-header .iconfont{font-size:.9rem}}.banner[parallax=true]{will-change:transform;-webkit-transform-style:preserve-3d;-webkit-backface-visibility:hidden}@media (max-width:100vh){header{max-height:100vw}#board{margin-top:-1rem!important}}@media (max-width:79.99vh){.scroll-down-bar{display:none}}.copy-btn,.footnote-text::before,sup>a::before{display:inline-block}#board{position:relative;margin-top:-2rem;background-color:var(--board-bg-color);transition:background-color .2s ease-in-out;border-radius:.5rem;z-index:3;-webkit-box-shadow:0 12px 15px 0 rgba(0,0,0,.24),0 17px 50px 0 rgba(0,0,0,.19);box-shadow:0 12px 15px 0 rgba(0,0,0,.24),0 17px 50px 0 rgba(0,0,0,.19)}.copy-btn{border-radius:.1rem;border:none;background-color:transparent;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;font-size:.75rem;line-height:1;font-weight:700;-webkit-transition:opacity .2s ease-in-out;-o-transition:opacity .2s ease-in-out;transition:opacity .2s ease-in-out;padding:.15rem;position:absolute;right:.35rem;top:.15rem;opacity:0}.copy-btn>i{font-size:.75rem;font-weight:400}.copy-btn>span{margin-left:5px}.copy-btn-dark{color:#6a737d}.copy-btn-light{color:#bababa}.markdown-body pre:hover>.copy-btn{opacity:.9}.markdown-body pre:hover>.copy-btn,.markdown-body pre:not(:hover)>.copy-btn{outline:0}footer>div:not(:first-child){margin:.25rem 0;font-size:.85rem}footer .statistics{display:flex;flex-direction:row;justify-content:center}footer .statistics>span{flex:1;margin:0 .25rem}footer .statistics>:nth-last-child(2):first-child{text-align:right}footer .statistics>:nth-last-child(2):first-child~*{text-align:left}footer .beian{display:flex;flex-direction:row;justify-content:center}footer .beian>*{flex:1;margin:0 .25rem}footer .beian>:nth-last-child(2):first-child{text-align:right}[align=left],footer .beian>:nth-last-child(2):first-child~*{text-align:left}.markdown-body pre .mermaid,.scroll-down-bar,[align=center]{text-align:center}footer .beian-police{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:left}footer .beian-police img{margin-right:3px;width:1rem;height:1rem;margin-bottom:.1rem}.footnote-item::before,.footnote-text::before,sup>a::before{content:"";margin-top:-5rem;height:5rem;width:1px;visibility:hidden}@media (max-width:424px){footer .beian>:nth-last-child(2):first-child,footer .beian>:nth-last-child(2):first-child~*,footer .statistics>:nth-last-child(2):first-child,footer .statistics>:nth-last-child(2):first-child~*{text-align:center}footer .beian,footer .statistics{flex-direction:column}footer .beian .beian-police{justify-content:center}}.footnote-item::before{display:block}.footnote-list ol{list-style-type:none;counter-reset:sectioncounter;padding-left:.5rem;font-size:.95rem}.footnote-list ol li:before{font-family:"Helvetica Neue",monospace,Monaco;content:"[" counter(sectioncounter) "]";counter-increment:sectioncounter}.footnote-list ol li+li{margin-top:.5rem}.footnote-text{padding-left:.5em}@media (max-width:767px){#subtitle{font-size:1.5rem}}@media (max-width:575px){#subtitle{font-size:1.35rem}}.qr-trigger{position:relative}.qr-trigger:hover .qr-img{display:block;transition:all .3s}body,body a,body a:hover{transition:color .2s ease-in-out,background-color .2s ease-in-out}.qr-img{max-width:12rem;position:absolute;right:-5.25rem;z-index:99;display:none;box-shadow:0 0 20px -5px rgba(158,158,158,.2);border-radius:.2rem}#scroll-top-button,.markdown-body .btn{-webkit-box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12)}.scroll-down-bar{position:absolute;width:100%;height:6rem;bottom:0}.scroll-down-bar i{font-size:2rem;font-weight:700;display:inline-block;position:relative;padding-top:2rem;color:#fff;-webkit-transform:translateZ(0);-moz-transform:translateZ(0);-ms-transform:translateZ(0);-o-transform:translateZ(0);transform:translateZ(0);-webkit-animation:scroll-down 1.5s infinite;animation:scroll-down 1.5s infinite}#scroll-top-button{position:fixed;z-index:99;background:var(--board-bg-color);transition:background-color .2s ease-in-out,bottom .3s ease;border-radius:4px;min-width:40px;min-height:40px;bottom:-60px;outline:0;display:flex;display:-webkit-flex;align-items:center;box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12)}#scroll-top-button i{font-size:1.75rem;margin:auto;color:var(--sec-text-color)}#scroll-top-button:active i,#scroll-top-button:hover i{-webkit-animation-name:scroll-top;animation-name:scroll-top;-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-delay:.1s;animation-delay:.1s;-webkit-animation-timing-function:ease-in-out;animation-timing-function:ease-in-out;-webkit-animation-iteration-count:infinite;animation-iteration-count:infinite;-webkit-animation-fill-mode:forwards;animation-fill-mode:forwards;-webkit-animation-direction:alternate;animation-direction:alternate}#local-search-result .search-list-title{border-left:3px solid #0d47a1}#local-search-result .search-list-content{padding:0 1.25rem}#local-search-result .search-word{color:#ff4500}body,body a,code{color:var(--text-color)}body,html{font-size:16px;font-family:var(--font-family-sans-serif)}.navbar,.navbar .dropdown-menu,.navbar .nav-item .nav-link i{font-size:.875rem}body,header,html{height:100%;overflow-wrap:break-word}body{background-color:var(--body-bg-color)}body a:hover{color:var(--link-hover-color)}img[srcset]{object-fit:cover;max-width:100%}[align=right]{text-align:right}:root{--color-mode:'light';--body-bg-color:#eee;--board-bg-color:#fff;--text-color:#3c4858;--sec-text-color:#718096;--post-text-color:#2c3e50;--post-heading-color:#1a202c;--post-link-color:#0366d6;--link-hover-color:#30a9de;--link-hover-bg-color:#f8f9fa;--navbar-bg-color:#2f4154;--navbar-text-color:#fff}@media (prefers-color-scheme:dark){:root{--color-mode:'dark'}:root:not([data-user-color-scheme]){--body-bg-color:#181c27;--board-bg-color:#252d38;--text-color:#c4c6c9;--sec-text-color:#a7a9ad;--post-text-color:#c4c6c9;--post-heading-color:#c4c6c9;--post-link-color:#1589e9;--link-hover-color:#30a9de;--link-hover-bg-color:#364151;--navbar-bg-color:#1f3144;--navbar-text-color:#d0d0d0}:root:not([data-user-color-scheme]) .label,:root:not([data-user-color-scheme]) .note,:root:not([data-user-color-scheme]) img{-webkit-filter:brightness(.9);filter:brightness(.9);transition:filter .2s ease-in-out}:root:not([data-user-color-scheme]) .page-header{color:#ddd;transition:color .2s ease-in-out}:root:not([data-user-color-scheme]) .markdown-body :not(pre)>code{background-color:rgba(62,75,94,.35);transition:background-color .2s ease-in-out}:root:not([data-user-color-scheme]) .markdown-body pre,:root:not([data-user-color-scheme]) .markdown-body td.code>.code-wrapper,:root:not([data-user-color-scheme]) .markdown-body td.gutter{-webkit-filter:brightness(.9);filter:brightness(.9);transition:filter .2s ease-in-out}:root:not([data-user-color-scheme]) .markdown-body td.gutter pre{-webkit-filter:initial;filter:initial}:root:not([data-user-color-scheme]) .markdown-body h1,:root:not([data-user-color-scheme]) .markdown-body h2{border-bottom-color:#435266}:root:not([data-user-color-scheme]) .markdown-body h1,:root:not([data-user-color-scheme]) .markdown-body h2,:root:not([data-user-color-scheme]) .markdown-body h3,:root:not([data-user-color-scheme]) .markdown-body h5,:root:not([data-user-color-scheme]) .markdown-body h6{color:#ddd;transition:all .2s ease-in-out}:root:not([data-user-color-scheme]) .markdown-body table tr,:root:not([data-user-color-scheme]) .markdown-body table tr:nth-child(2n){background-color:var(--board-bg-color);transition:background-color .2s ease-in-out}:root:not([data-user-color-scheme]) .markdown-body table td,:root:not([data-user-color-scheme]) .markdown-body table th{border-color:#435266;transition:border-color .2s ease-in-out}:root:not([data-user-color-scheme]) .markdown-body hr,:root:not([data-user-color-scheme]) hr{border-top-color:#435266;transition:border-top-color .2s ease-in-out}@supports (-webkit-backdrop-filter:blur(3px)) or (backdrop-filter:blur(3px)){:root:not([data-user-color-scheme]) .navbar .dropdown-collapse,:root:not([data-user-color-scheme]) .navbar-col-show,:root:not([data-user-color-scheme]) .top-nav-collapse{background:rgba(31,49,68,.7);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}}@supports not ((-webkit-backdrop-filter:blur(3px)) or (backdrop-filter:blur(3px))){:root:not([data-user-color-scheme]) .navbar .dropdown-collapse,:root:not([data-user-color-scheme]) .navbar-col-show,:root:not([data-user-color-scheme]) .top-nav-collapse{background:#1f3144}}:root:not([data-user-color-scheme]) .note :not(pre)>code{background-color:rgba(27,31,35,.05)}:root:not([data-user-color-scheme]) .modal-dialog .modal-content .modal-header{border-bottom-color:#435266;transition:border-bottom-color .2s ease-in-out}:root:not([data-user-color-scheme]) .gt-comment-admin .gt-comment-content{background-color:transparent;transition:background-color .2s ease-in-out}}[data-user-color-scheme=dark]{--body-bg-color:#181c27;--board-bg-color:#252d38;--text-color:#c4c6c9;--sec-text-color:#a7a9ad;--post-text-color:#c4c6c9;--post-heading-color:#c4c6c9;--post-link-color:#1589e9;--link-hover-color:#30a9de;--link-hover-bg-color:#364151;--navbar-bg-color:#1f3144;--navbar-text-color:#d0d0d0}[data-user-color-scheme=dark] .label,[data-user-color-scheme=dark] .note,[data-user-color-scheme=dark] img{-webkit-filter:brightness(.9);filter:brightness(.9);transition:filter .2s ease-in-out}[data-user-color-scheme=dark] .page-header{color:#ddd;transition:color .2s ease-in-out}[data-user-color-scheme=dark] .markdown-body :not(pre)>code{background-color:rgba(62,75,94,.35);transition:background-color .2s ease-in-out}[data-user-color-scheme=dark] .markdown-body pre,[data-user-color-scheme=dark] .markdown-body td.code>.code-wrapper,[data-user-color-scheme=dark] .markdown-body td.gutter{-webkit-filter:brightness(.9);filter:brightness(.9);transition:filter .2s ease-in-out}[data-user-color-scheme=dark] .markdown-body td.gutter pre{-webkit-filter:initial;filter:initial}[data-user-color-scheme=dark] .markdown-body h1,[data-user-color-scheme=dark] .markdown-body h2{border-bottom-color:#435266}[data-user-color-scheme=dark] .markdown-body h1,[data-user-color-scheme=dark] .markdown-body h2,[data-user-color-scheme=dark] .markdown-body h3,[data-user-color-scheme=dark] .markdown-body h5,[data-user-color-scheme=dark] .markdown-body h6{color:#ddd;transition:all .2s ease-in-out}.navbar .nav-item .nav-link,.navbar .navbar-brand{color:var(--navbar-text-color)}[data-user-color-scheme=dark] .markdown-body table tr,[data-user-color-scheme=dark] .markdown-body table tr:nth-child(2n){background-color:var(--board-bg-color);transition:background-color .2s ease-in-out}[data-user-color-scheme=dark] .markdown-body table td,[data-user-color-scheme=dark] .markdown-body table th{border-color:#435266;transition:border-color .2s ease-in-out}[data-user-color-scheme=dark] .markdown-body hr,[data-user-color-scheme=dark] hr{border-top-color:#435266;transition:border-top-color .2s ease-in-out}@supports (-webkit-backdrop-filter:blur(3px)) or (backdrop-filter:blur(3px)){[data-user-color-scheme=dark] .navbar .dropdown-collapse,[data-user-color-scheme=dark] .navbar-col-show,[data-user-color-scheme=dark] .top-nav-collapse{background:rgba(31,49,68,.7);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}}@supports not ((-webkit-backdrop-filter:blur(3px)) or (backdrop-filter:blur(3px))){[data-user-color-scheme=dark] .navbar .dropdown-collapse,[data-user-color-scheme=dark] .navbar-col-show,[data-user-color-scheme=dark] .top-nav-collapse{background:#1f3144}}[data-user-color-scheme=dark] .note :not(pre)>code{background-color:rgba(27,31,35,.05)}[data-user-color-scheme=dark] .modal-dialog .modal-content .modal-header{border-bottom-color:#435266;transition:border-bottom-color .2s ease-in-out}[data-user-color-scheme=dark] .gt-comment-admin .gt-comment-content{background-color:transparent;transition:background-color .2s ease-in-out}.fade-in-up{-webkit-animation-name:fade-in-up;animation-name:fade-in-up}.hidden-mobile{display:block}.visible-mobile{display:none}@media (max-width:575px){.hidden-mobile{display:none}.visible-mobile{display:block}}.nomargin-x{margin-left:0!important;margin-right:0!important}.nopadding-x{padding-left:0!important;padding-right:0!important}@media (max-width:767px){.nopadding-x-md{padding-left:0!important;padding-right:0!important}.navbar{font-size:1rem;line-height:2.5rem}}.flex-center{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;height:100%}.hover-with-bg{display:inline-block;padding:.45rem}.hover-with-bg:hover{background-color:var(--link-hover-bg-color);transition-duration:.2s;transition-timing-function:ease-in-out;border-radius:.15rem}@-moz-keyframes fade-in-up{from{opacity:0;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}to{opacity:1;-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}}@-webkit-keyframes fade-in-up{from{opacity:0;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}to{opacity:1;-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}}@-o-keyframes fade-in-up{from{opacity:0;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}to{opacity:1;-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}}@keyframes fade-in-up{from{opacity:0;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}to{opacity:1;-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}}@-moz-keyframes scroll-down{0%,100%{opacity:.8;top:0}50%{opacity:.4;top:-1em}}@-webkit-keyframes scroll-down{0%,100%{opacity:.8;top:0}50%{opacity:.4;top:-1em}}@-o-keyframes scroll-down{0%,100%{opacity:.8;top:0}50%{opacity:.4;top:-1em}}@keyframes scroll-down{0%,100%{opacity:.8;top:0}50%{opacity:.4;top:-1em}}@-moz-keyframes scroll-top{0%,100%{-webkit-transform:translateY(0);transform:translateY(0)}50%{-webkit-transform:translateY(-.35rem);transform:translateY(-.35rem)}}@-webkit-keyframes scroll-top{0%,100%{-webkit-transform:translateY(0);transform:translateY(0)}50%{-webkit-transform:translateY(-.35rem);transform:translateY(-.35rem)}}@-o-keyframes scroll-top{0%,100%{-webkit-transform:translateY(0);transform:translateY(0)}50%{-webkit-transform:translateY(-.35rem);transform:translateY(-.35rem)}}@keyframes scroll-top{0%,100%{-webkit-transform:translateY(0);transform:translateY(0)}50%{-webkit-transform:translateY(-.35rem);transform:translateY(-.35rem)}}.navbar{background-color:transparent;box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12);-webkit-box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12)}.navbar .navbar-toggler .animated-icon span{background-color:var(--navbar-text-color)}.navbar .nav-item .nav-link{display:block;transition:color .2s,background-color .2s}.navbar .nav-item .nav-link:hover{color:var(--link-hover-color);background-color:rgba(0,0,0,.1)}.navbar .dropdown-item,.navbar .dropdown-menu{color:var(--navbar-text-color)}.navbar .navbar-toggler{border-width:0;outline:0}.navbar.scrolling-navbar{will-change:background,padding;-webkit-transition:background .5s ease-in-out,padding .5s ease-in-out;transition:background .5s ease-in-out,padding .5s ease-in-out}@media (min-width:600px){.navbar.scrolling-navbar{padding-top:12px;padding-bottom:12px}.navbar.scrolling-navbar .navbar-nav>li{-webkit-transition-duration:1s;transition-duration:1s}}.navbar.scrolling-navbar.top-nav-collapse{padding-top:5px;padding-bottom:5px}.navbar .dropdown-menu{background-color:rgba(0,0,0,.3);border:none;-webkit-transition:background .5s ease-in-out,padding .5s ease-in-out;transition:background .5s ease-in-out,padding .5s ease-in-out}@media (max-width:991.98px){.navbar .dropdown-menu{text-align:center}}.navbar .dropdown-item:focus,.navbar .dropdown-item:hover{color:var(--link-hover-color);background-color:rgba(0,0,0,.1)}@media (min-width:992px){.navbar .dropdown:hover>.dropdown-menu{display:block}.navbar .dropdown>.dropdown-toggle:active{pointer-events:none}.navbar .dropdown-menu{top:95%}}.navbar .animated-icon{width:30px;height:20px;position:relative;margin:0;-webkit-transform:rotate(0);-moz-transform:rotate(0);-o-transform:rotate(0);transform:rotate(0);-webkit-transition:.5s ease-in-out;-moz-transition:.5s ease-in-out;-o-transition:.5s ease-in-out;transition:.5s ease-in-out}.navbar .animated-icon span{display:block;position:absolute;height:3px;width:100%;border-radius:9px;opacity:1;left:0;-webkit-transform:rotate(0);-moz-transform:rotate(0);-o-transform:rotate(0);transform:rotate(0);-webkit-transition:.25s ease-in-out;-moz-transition:.25s ease-in-out;-o-transition:.25s ease-in-out;transition:.25s ease-in-out;background:#fff}.navbar .animated-icon span:nth-child(1){top:0}.navbar .animated-icon span:nth-child(2){top:10px}.navbar .animated-icon span:nth-child(3){top:20px}.navbar .animated-icon.open span:nth-child(1){top:11px;-webkit-transform:rotate(135deg);-moz-transform:rotate(135deg);-o-transform:rotate(135deg);transform:rotate(135deg)}.navbar .animated-icon.open span:nth-child(2){opacity:0;left:-60px}.navbar .animated-icon.open span:nth-child(3){top:11px;-webkit-transform:rotate(-135deg);-moz-transform:rotate(-135deg);-o-transform:rotate(-135deg);transform:rotate(-135deg)}@supports (-webkit-backdrop-filter:blur(3px)) or (backdrop-filter:blur(3px)){.navbar .dropdown-collapse,.navbar-col-show,.top-nav-collapse{background:rgba(47,65,84,.7);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}}@supports not ((-webkit-backdrop-filter:blur(3px)) or (backdrop-filter:blur(3px))){.navbar .dropdown-collapse,.navbar-col-show,.top-nav-collapse{background:#2f4154}}.markdown-body{font-size:1rem;margin-bottom:2rem;font-family:var(--font-family-sans-serif);color:var(--post-text-color)}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{color:var(--post-heading-color);font-weight:700;margin-bottom:.75em;margin-top:2em}.markdown-body h1:focus,.markdown-body h2:focus,.markdown-body h3:focus,.markdown-body h4:focus,.markdown-body h5:focus,.markdown-body h6:focus{outline:0}.markdown-body a{color:var(--post-link-color)}.markdown-body code{color:var(--post-text-color)}.markdown-body strong{font-weight:700}.markdown-body pre{font-size:85%!important;border-radius:3px}.markdown-body pre code{overflow-x:auto;line-height:1.5;border-radius:3px;tab-size:4}.markdown-body pre .mermaid>svg{min-width:100%}.markdown-body p>a>img,.markdown-body p>img{max-width:90%;margin:1.5rem auto;display:block;box-shadow:0 5px 11px 0 rgba(0,0,0,.18),0 4px 15px 0 rgba(0,0,0,.15);border-radius:3px}.markdown-body blockquote{color:var(--sec-text-color)}.markdown-body details summary{outline:0}.markdown-body .hljs{overflow-x:initial;padding:0}.markdown-body .hljs pre{background-color:initial!important}.markdown-body>.code-wrapper{position:relative;border-radius:3px}.markdown-body>.code-wrapper pre[class*=language-].line-numbers{position:initial}.md-form,figure.highlight{position:relative}.markdown-body figure.highlight td.code>pre{border-top-left-radius:0;border-bottom-left-radius:0}.markdown-body hr{height:0;margin:2rem 0;background-color:initial;border-top-width:2px;border-top-style:solid;border-top-color:rgba(0,0,0,.1)}figure.highlight table{border:0;margin:0;width:auto;border-radius:3px}figure.highlight td{border:0;padding:0}figure.highlight tr{border:0}figure.highlight td.code{width:100%}figure.highlight td.gutter{display:table-cell}figure.highlight td.gutter:not(.hljs){background-color:#f6f8fa}figure.highlight td.gutter pre{text-align:right;font-size:1px;overflow-x:none;overflow-y:none;padding:0 .75rem;line-height:1.5;background-color:inherit;border-radius:initial;border-right:1px solid #999}.list-group-item,.pagination .current,.pagination a{border:0;background-color:transparent}figure.highlight td.gutter pre span.line{color:#999}.page-link{font-size:1.1rem}.pagination{margin-top:3rem;justify-content:center}.pagination .space{align-self:flex-end}.pagination .current,.pagination a{outline:0;font-size:.9rem;padding:.5rem .75rem;line-height:1.25;border-radius:.125rem;transition:background-color .2s ease-in-out}.iconfont,.mjx-char{line-height:1}.pagination .current,.pagination a:hover{background-color:var(--link-hover-bg-color)}.modal-dialog .modal-content{background-color:var(--board-bg-color);border:0;border-radius:.125rem;-webkit-box-shadow:0 5px 11px 0 rgba(0,0,0,.18),0 4px 15px 0 rgba(0,0,0,.15);box-shadow:0 5px 11px 0 rgba(0,0,0,.18),0 4px 15px 0 rgba(0,0,0,.15)}.close{color:var(--text-color)}.close:hover{color:var(--link-hover-color)}.close:focus{outline:0}.modal-dialog .modal-content .modal-header{border-top-left-radius:.125rem;border-top-right-radius:.125rem;border-bottom:1px solid #dee2e6}.md-form{margin-top:1.5rem;margin-bottom:1.5rem}.md-form input[type]{-webkit-box-sizing:content-box;box-sizing:content-box;background-color:transparent;border:none;border-bottom:1px solid #ced4da;border-radius:0;outline:0;-webkit-box-shadow:none;box-shadow:none;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out,-webkit-box-shadow .15s ease-in-out}.md-form input[type]:focus:not([readonly]){border-bottom:1px solid #4285f4;-webkit-box-shadow:0 1px 0 0 #4285f4;box-shadow:0 1px 0 0 #4285f4}.md-form input[type]:focus:not([readonly])+label{color:#4285f4}.md-form input[type].valid,.md-form input[type]:focus.valid{border-bottom:1px solid #00c851;-webkit-box-shadow:0 1px 0 0 #00c851;box-shadow:0 1px 0 0 #00c851}.md-form input[type].valid+label,.md-form input[type]:focus.valid+label{color:#00c851}.md-form input[type].invalid,.md-form input[type]:focus.invalid{border-bottom:1px solid #f44336;-webkit-box-shadow:0 1px 0 0 #f44336;box-shadow:0 1px 0 0 #f44336}.md-form input[type].invalid+label,.md-form input[type]:focus.invalid+label{color:#f44336}.md-form input[type].validate{margin-bottom:2.5rem}.md-form input[type].form-control{height:auto;padding:.6rem 0 .4rem;margin:0 0 .5rem;color:var(--text-color);background-color:transparent;border-radius:0}.md-form label{font-size:.8rem;position:absolute;top:-1rem;left:0;color:#757575;cursor:text;-webkit-transition:color .2s ease-out,-webkit-transform .2s ease-out;transition:transform .2s ease-out,color .2s ease-out,-webkit-transform .2s ease-out}.toc-list-item{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.iconfont{font-size:1rem}input[type=checkbox]{-moz-appearance:none;position:relative;right:0;bottom:0;left:0;height:1.25rem;width:1.25rem;transition:.2s;color:#fff;cursor:pointer;margin:.4rem .2rem!important;border-radius:.1875rem;vertical-align:-.65rem;border:2px solid #2f4154}.index-img img,.note{border-radius:.25rem}input[type=checkbox]:after,input[type=checkbox]:before{content:" ";transition:.2s;position:absolute;background:#fff}input[type=checkbox]:before{left:.125rem;top:.375rem;width:0;height:.125rem;-webkit-transform:rotate(45deg);-moz-transform:rotate(45deg);-ms-transform:rotate(45deg);-o-transform:rotate(45deg);transform:rotate(45deg)}input[type=checkbox]:after{right:.5625rem;bottom:.1875rem;width:.125rem;height:0;-webkit-transform:rotate(40deg);-moz-transform:rotate(40deg);-ms-transform:rotate(40deg);-o-transform:rotate(40deg);transform:rotate(40deg);transition-delay:.2s}input[type=checkbox]:checked{background:#2f4154;margin-right:.5rem!important}input[type=checkbox]:checked:before{left:.0625rem;top:.625rem;width:.375rem;height:.125rem}input[type=checkbox]:checked:after{right:.3125rem;bottom:.0625rem;width:.125rem;height:.875rem}.list-group-item-action{color:var(--text-color)}.list-group-item-action:focus,.list-group-item-action:hover{color:var(--link-hover-color);background-color:var(--link-hover-bg-color)}.gt-container .gt-comment-body,.v[data-class=v] .status-bar,.v[data-class=v] .vbtn,.v[data-class=v] .veditor,.v[data-class=v] .vinput,.v[data-class=v] p,.v[data-class=v] pre code{color:var(--text-color)!important}#nprogress .bar{height:3px!important;background-color:#29d!important}#nprogress .peg{box-shadow:0 0 14px #29d,0 0 8px #29d!important}@media (max-width:575px){#nprogress .bar{display:none}}.v[data-class=v] .vicon{fill:var(--text-color)!important}.gt-container .gt-comment-content:hover{-webkit-box-shadow:none;box-shadow:none}.gt-container .gt-comment-body{transition:color .2s ease-in-out}.index-header,.index-header .index-pin,.tocbot-link{color:var(--text-color)}#remark-km423lmfdslkm34-back{z-index:1030}#remark-km423lmfdslkm34-node{z-index:1031}.mjx-container,mjx-container{overflow-x:auto;overflow-y:hidden!important;padding:.5em 0}.mjx-container svg:focus,.mjx-container:focus,mjx-container svg:focus,mjx-container:focus{outline:0}.katex-block{overflow-x:auto}.katex,.mjx-mrow{white-space:pre-wrap!important}.footnote-ref [class*=hint--][aria-label]:after,.index-header,.link-title{white-space:nowrap;text-overflow:ellipsis}.footnote-ref [class*=hint--][aria-label]:after{max-width:12rem;overflow:hidden}.index-card{margin-bottom:2.5rem}.index-img img{display:block;width:100%;height:10rem;object-fit:cover;box-shadow:0 5px 11px 0 rgba(0,0,0,.18),0 4px 15px 0 rgba(0,0,0,.15)}.index-info{display:flex;flex-direction:column;justify-content:space-between;padding-top:.5rem;padding-bottom:.5rem}.index-header{font-size:1.5rem;font-weight:700;line-height:1.2;overflow:hidden}.index-header .index-pin{font-size:1.5rem;margin-right:.15rem}.index-btm,.index-btm a,.index-excerpt{color:var(--sec-text-color)}.index-excerpt{margin:.5rem 0;max-height:calc(1.4rem * 3);line-height:1.4rem;overflow:hidden}.index-excerpt>div{float:right;margin-left:-.25rem;width:100%;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3}.post-content,post-custom{box-sizing:border-box;padding-left:10%;padding-right:10%}@media (max-width:767px){.index-header,.index-header .index-pin{font-size:1.25rem}.index-info{padding-top:1.25rem}.index-header{white-space:normal;overflow:hidden;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2}.post-content,post-custom{padding-left:2rem;padding-right:2rem}}@media (max-width:424px){.post-content,post-custom{padding-left:1rem;padding-right:1rem}}.post-content h1::before,.post-content h2::before,.post-content h3::before,.post-content h4::before,.post-content h5::before,.post-content h6::before{display:block;content:"";margin-top:-5rem;height:5rem;width:1px;visibility:hidden}.page-content strong,.post-content strong{font-weight:700}.page-content>:first-child,.post-content>:first-child{margin-top:0}.post-metas{display:flex;flex-direction:row;flex-wrap:wrap}.post-meta>a:not(.hover-with-bg),.post-meta>i{margin-right:.15rem}.post-prevnext{margin-top:2rem;display:flex;flex-wrap:wrap;justify-content:space-between;margin-left:-.5rem;margin-right:-.5rem}.category-item,.post-prevnext .post-next a,.post-prevnext .post-prev a{align-items:center;display:flex}.post-prevnext .post-next,.post-prevnext .post-prev{display:flex;padding-left:0;padding-right:0}.post-prevnext .post-next i,.post-prevnext .post-prev i{font-size:1.5rem}.post-prevnext .post-next .hidden-mobile,.post-prevnext .post-prev .hidden-mobile{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;text-overflow:ellipsis;overflow:hidden}@media (max-width:575px){.post-prevnext .post-next .hidden-mobile,.post-prevnext .post-prev .hidden-mobile{display:none}}.post-prevnext .post-next:active i,.post-prevnext .post-next:hover i,.post-prevnext .post-prev:active i,.post-prevnext .post-prev:hover i{-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-delay:.1s;animation-delay:.1s;-webkit-animation-timing-function:ease-in-out;animation-timing-function:ease-in-out;-webkit-animation-iteration-count:infinite;animation-iteration-count:infinite;-webkit-animation-fill-mode:forwards;animation-fill-mode:forwards;-webkit-animation-direction:alternate;animation-direction:alternate}.post-prevnext .post-prev:active i,.post-prevnext .post-prev:hover i{-webkit-animation-name:post-prev-anim;animation-name:post-prev-anim}.post-prevnext .post-next:active i,.post-prevnext .post-next:hover i{-webkit-animation-name:post-next-anim;animation-name:post-next-anim}.post-prevnext .post-next{justify-content:flex-end}.post-prevnext .fa-chevron-left{margin-right:.5rem}.post-prevnext .fa-chevron-right{margin-left:.5rem}#toc{position:-webkit-sticky;position:sticky;top:2rem;padding:3rem 0 0;visibility:hidden}.toc-header{margin-bottom:.5rem;font-weight:500;line-height:1.2}.toc-header,.toc-header>i{font-size:1.25rem}.toc-body{max-height:75vh;overflow-y:auto;overflow:-moz-scrollbars-none;-ms-overflow-style:none}.toc-body ol{list-style:none;padding-inline-start:1rem}.toc-body::-webkit-scrollbar{display:none}.tocbot-list ol{list-style:none;padding-left:1rem}.tocbot-list a{font-size:.95rem}.tocbot-active-link{font-weight:700;color:var(--link-hover-color)}.tocbot-is-collapsed{max-height:0}.tocbot-is-collapsible{overflow:hidden;transition:all .3s ease-in-out}.link-avatar,.markdown-body .btn{transition-timing-function:ease-in-out}@media (max-width:1024px){.toc-container{padding-left:0;padding-right:0}}.markdown-body .image-caption{font-size:.8rem;color:var(--post-text-color);opacity:.65;line-height:1;margin:-.85rem auto 2rem;text-align:center}.label,.note,.note a{color:#3c4858}.comments,.custom{margin-top:2rem}.visitors{font-size:.8em;padding:.45rem;float:right}@-moz-keyframes post-prev-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(-.35rem);transform:translateX(-.35rem)}}@-webkit-keyframes post-prev-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(-.35rem);transform:translateX(-.35rem)}}@-o-keyframes post-prev-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(-.35rem);transform:translateX(-.35rem)}}@keyframes post-prev-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(-.35rem);transform:translateX(-.35rem)}}@-moz-keyframes post-next-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(.35rem);transform:translateX(.35rem)}}@-webkit-keyframes post-next-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(.35rem);transform:translateX(.35rem)}}@-o-keyframes post-next-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(.35rem);transform:translateX(.35rem)}}@keyframes post-next-anim{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(.35rem);transform:translateX(.35rem)}}.note{padding:.75rem;border-left:.35rem solid;margin:1.5rem 0;font-size:.9rem}.note :last-child{margin-bottom:0}.note-primary{background-color:#f5f0fa;border-color:#6f42c1}.note-secondary,note-default{background-color:#f7f7f7;border-color:#777}.note-success{background-color:#eff8f0;border-color:#5cb85c}.note-danger{background-color:#fcf1f2;border-color:#d9534f}.note-warning{background-color:#fdf8ea;border-color:#f0ad4e}.note-info{background-color:#eef7fa;border-color:#428bca}.note-light{background-color:#fefefe;border-color:#0f0f0f}.label{display:inline;border-radius:3px;font-size:85%;margin:0;padding:.2em .4em}.label-default{background:#f7f7f7}.label-primary{background:#f5f0fa}.label-info{background:#eef7fa}.label-success{background:#eff8f0}.label-warning{background:#fdf8ea}.label-danger{background:#fcf1f2}.markdown-body .btn{background:#2f4154;border-radius:.25rem;color:#fff!important;display:inline-block;font-size:.875em;line-height:2;padding:0 .75rem;transition-property:background;transition-delay:0s;transition-duration:.2s;box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12);margin-bottom:1rem}.markdown-body .btn:hover{background:#23ae92;color:#fff!important}.group-image-container{margin:1.5rem auto}.group-image-container img{margin:0 auto;border-radius:3px;box-shadow:0 3px 9px 0 rgba(0,0,0,.15),0 3px 9px 0 rgba(0,0,0,.15)}.group-image-row{margin-bottom:.5rem;display:flex;justify-content:center}.group-image-wrap{flex:1;display:flex;justify-content:center}.group-image-wrap:not(:last-child){margin-right:.25rem}.list-group a~p.h5{margin-top:1rem}.about-avatar{position:relative;margin:-8rem auto 1rem;width:10rem;height:10rem;z-index:3}.about-avatar img{width:100%;height:100%;border-radius:50%;-moz-border-radius:50%;-webkit-border-radius:50%;object-fit:cover;-webkit-box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12);box-shadow:0 2px 5px 0 rgba(0,0,0,.16),0 2px 10px 0 rgba(0,0,0,.12)}.about-info>div{margin-bottom:.5rem}.about-name{font-size:1.75rem;font-weight:700}.about-intro{font-size:1rem}.about-icons>a:not(:last-child){margin-right:.5rem}.about-icons>a>i{font-size:1.5rem}.category:not(:last-child){margin-bottom:1rem}.category-item{font-size:1.25rem;font-weight:700}.category-subitem{font-size:1rem;font-weight:700}.category-collapse{margin-left:1.25rem;width:100%}.category-count{font-size:.9rem;font-weight:initial;min-width:1.3em;line-height:1.3em;display:flex;align-items:center}.category-count i{padding-right:.25rem}.category-count span{width:2rem}.category-item-action:not(.collapsed)>i{transform:rotate(90deg);transform-origin:center center}.category-item-action i{transition:transform .3s ease-out;display:inline-block;margin-left:.25rem}.category-item-action:hover{z-index:1;color:var(--link-hover-color);background-color:var(--link-hover-bg-color)}.category .row{margin-left:0;margin-right:0}.tagcloud{padding:1rem 5%}.tagcloud a{display:inline-block;padding:.5rem}.tagcloud a:hover{color:var(--link-hover-color)!important}.links .card{box-shadow:none;min-width:33%;background-color:transparent;border:0}.links .card-body{margin:1rem 0;padding:1rem;border-radius:.3rem;display:block;width:100%;height:100%}.links .card-body:hover .link-avatar{transform:scale(1.1)}.links .card-content{display:flex;flex-wrap:nowrap;width:100%;height:3.5rem}.link-avatar{flex:none;width:3rem;height:3rem;margin-right:.75rem;object-fit:cover;transition-duration:.2s}.link-avatar img{width:100%;height:100%;border-radius:50%;-moz-border-radius:50%;-webkit-border-radius:50%;object-fit:cover}.link-text{flex:1;display:grid;flex-direction:column}.link-title{overflow:hidden;color:$text_color;font-weight:700}.link-intro{max-height:2rem;font-size:.85rem;line-height:1.2;color:var(--sec-text-color);display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;text-overflow:ellipsis;overflow:hidden}@media (max-width:767px){.links{display:flex;flex-direction:column;justify-content:center;align-items:center}.links .card{padding-left:2rem;padding-right:2rem}}@media (min-width:768px){.link-text:only-child{margin-left:1rem}}