:root{--font-color:#333;--bg-color:#fff;--link-color:#1d60a3;--link-state-color:#a31d1d;--link-state-border-color:rgba(163, 29, 29, .5);--thead-bg-color:lightgrey;--table-border-color:lightgrey;--nav-bg-color:#fafafa;--nav-link-color:#696969;--pre-color:#333;--pre-bg-color:#f1f1f1;--bq-color:#ccc;--hr-color:#ccc;--pagination-bg-color:#fafafa;--pagination-link-color:#696969;--post-info-color:grey;--switcher-color:#fff;--switcher-bg-color:#333;--svg-color:#333;--svg-state-color:#a31d1d}[data-theme=dark]{--font-color:#eee;--bg-color:#212121;--link-color:#599ada;--link-state-color:#ff5858;--link-state-border-color:rgba(238, 54, 54, 0.5);--thead-bg-color:#343a40;--table-border-color:lightgrey;--nav-bg-color:#242424;--nav-link-color:#b6b6b6;--pre-color:#f8f8f2;--pre-bg-color:#272822;--bq-color:#ccc;--hr-color:#333;--pagination-bg-color:#373737;--pagination-link-color:#b6b6b6;--post-info-color:grey;--switcher-color:#333;--switcher-bg-color:#fff;--svg-color:#ccc;--svg-state-color:#ff5858}html{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;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0;font-size:18px;line-height:1.5;-webkit-font-smoothing:antialiased;color:var(--font-color);background:var(--bg-color)}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section{display:block}.container{max-width:42em;margin:0 auto}main{outline:none}h1{font-size:1.35em}h2{font-size:1.2em}h3{font-size:1.1em}a{color:var(--link-color);text-decoration:none;border-bottom:1px solid transparent}a:hover,a:focus,a:active{color:var(--link-state-color);border-bottom:1px solid var(--link-state-border-color)}a:active,a:hover{outline:0}a:active{opacity:.9}a.skip-main{left:-999px;position:absolute;top:auto;width:1px;height:1px;overflow:hidden;z-index:-999}a.skip-main:focus,a.skip-main:active{left:auto;top:0;width:auto;height:auto;overflow:auto;z-index:999;padding:4px 6px;text-decoration:underline;border:none}thead{background:var(--thead-bg-color)}.table-wrapper{overflow-x:auto}table{max-width:100%;border-spacing:0}th,td{padding:.5em 1em;border:1px double var(--table-border-color)}pre{max-width:100%;overflow:auto;margin-top:0;margin-bottom:0}code,pre,kbd{color:var(--pre-color);background-color:var(--pre-bg-color);font-family:monospace;font-size:.9em;line-height:154%}pre code,pre kbd{color:inherit;background-color:inherit}blockquote{border-left:2px solid var(--bq-color);padding:.1em 1em;margin-left:.75em}p{margin-top:.5em;margin-bottom:.5em}hr{color:var(--hr-color);background-color:var(--hr-color);border:none;height:1px}.common-header{padding-bottom:1.5em;border-bottom:thin solid var(--hr-color)}header a{color:var(--font-color)}header h1{font-size:1em;margin-top:1em;margin-bottom:0;font-weight:400}header h2{font-size:1em;margin:0;font-weight:400}.header-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;vertical-align:middle;margin-top:1em}.site-title{display:inline;white-space:nowrap}header nav:not(:empty){background:var(--nav-bg-color);margin-top:1em;max-width:100%;text-align:center;padding:.5em 0}header nav a{display:inline-block;margin:0 2.5%}.social-icons{display:inline;margin:1em 0 0 3em;padding:0;list-style-type:none}.social-icons li{display:inline}.social-icons li:not(:first-of-type){margin-left:.5em}.social-icons a:hover,.social-icons a:focus,.social-icons a:active{color:inherit;border-bottom:none;text-decoration:none}.inline-svg{display:inline-block;height:1.15rem;width:1.15rem;top:.15rem;position:relative}main h1{margin-top:1em;font-weight:400;line-height:1.1em;margin-bottom:.5em;font-weight:600}.post-short-list:first-of-type{margin-top:1em}.post-short-list img{max-width:100%;display:block;height:auto;margin:0 auto .5em}.post-short-list video{max-width:100%;display:block;height:auto;margin:0 auto .5em}.post-header{margin-top:1em;line-height:1.1em;margin-bottom:1em}.post-header header{display:inline}.post-navigation{background:var(--nav-bg-color);text-align:center;margin-top:1em;max-width:100%;padding:.5em 0}.post-navigation a:first-of-type{margin-left:0}.post-navigation a{color:var(--nav-link-color);margin-left:2em}.post-navigation a:hover,.post-navigation a:focus,.post-navigation a:active{color:var(--link-state-color)}.post-short-list .post-title{display:inline}.post-title.favorite::after{content:"☆";display:inline-block;margin-left:.2em}.post-title.draft::after{content:"✎";display:inline-block;margin-left:.2em}.post-title.favorite.draft::after{content:"☆ ✎";display:inline-block;margin-left:.2em}article:not(:last-of-type){border-bottom:thin solid var(--hr-color);padding-bottom:2em}article header h1{font-size:1.35em;line-height:1.1em;margin-bottom:.5em;font-weight:600;display:inline}article header h1 a{color:var(--font-color);border:none;text-decoration:none}.post h1,.post h2,.post h3,.post h4,.post h5,.post h6{position:relative}.post h1 a,.post h2 a,.post h3 a,.post h4 a,.post h5 a,.post h6 a{opacity:0;position:absolute;left:-1.2rem}.post h1:hover a,.post h2:hover a,.post h3:hover a,.post h4:hover a,.post h5:hover a,.post h6:hover a{opacity:1;border-bottom:none}.post h1 a:hover,.post h1 a:focus,.post h1 a:active,.post h2 a:hover,.post h2 a:focus,.post h2 a:active,.post h3 a:hover,.post h3 a:focus,.post h3 a:active,.post h4 a:hover,.post h4 a:focus,.post h4 a:active,.post h5 a:hover,.post h5 a:focus,.post h5 a:active,.post h6 a:hover,.post h6 a:focus,.post h6 a:active{border-bottom:none}.post h1 svg,.post h2 svg,.post h3 svg,.post h4 svg,.post h5 svg,.post h6 svg{stroke:var(--svg-color)}.post h1 svg:hover,.post h1 svg:focus,.post h1 svg:active,.post h2 svg:hover,.post h2 svg:focus,.post h2 svg:active,.post h3 svg:hover,.post h3 svg:focus,.post h3 svg:active,.post h4 svg:hover,.post h4 svg:focus,.post h4 svg:active,.post h5 svg:hover,.post h5 svg:focus,.post h5 svg:active,.post h6 svg:hover,.post h6 svg:focus,.post h6 svg:active{stroke:var(--svg-state-color)}.post-info{color:var(--post-info-color);font-size:.75em;margin-top:1em}.post-info a{color:var(--post-info-color)}.post-info a:hover{color:var(--link-state-color)}.post-short-list .post-info{margin-top:0;margin-bottom:1.5em}.post-taxonomies{display:inline}.post-hidden-url{display:none}.post-hidden-author{display:none}.post-date{white-space:nowrap}.post-categories{display:inline;list-style-type:none;padding:0}.post-categories li{display:inline;margin-right:1em}.post-tags{display:inline;list-style-type:none;padding:0;margin:0}.post-tags li{display:inline;margin-right:1em}.post-authors{display:inline;list-style-type:none;padding:0;margin:0}.post-authors li{display:inline;margin-right:1em}article img{max-width:100%;display:block;height:auto;margin:0 auto .5em}article figcaption{color:grey;text-align:center;font-size:.85em;margin-bottom:2em}article video{max-width:100%;display:block;height:auto;margin:0 auto .5em}code.has-jax{-webkit-font-smoothing:antialiased;background:inherit!important;border:none!important;font-size:100%}.read-more{margin:1em 0}.divider{border-top:thin solid var(--hr-color);display:block;height:1px;border:0;width:25%;margin:1em auto}.post-summary{margin-top:.5em;display:block}.post-summary>p{display:block}.post-translations{margin-left:.5em;list-style:none;padding:0;display:inline;font-size:14px}.post-translations>li{display:inline}.post-translations>li:not(:last-child)::after{content:"|";display:inline-block}.post-translations>li a{color:var(--link-color)}.post-translations>li a:hover,.post-translations>li a:focus{color:var(--link-state-color)}.read-next-title{margin-bottom:0}.read-next-posts{margin-top:5px;list-style-type:"- ";padding-inline-start:20px}.terms{list-style-type:none;padding:0;line-height:2em}.pagination{display:flex;justify-content:space-between;margin-top:3em;text-align:center}.pagination-item{background:var(--pagination-bg-color);padding:.75em}.pagination-item a{color:var(--pagination-link-color)}.pagination-item a:hover,.pagination-item a:focus{color:var(--link-state-color)}.disabled{visibility:hidden}.pagination-item a:hover,.pagination-item a:focus{border-bottom:0}.post-pagination .pagination-item{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:16em}.common-footer{border-top:thin solid var(--hr-color);padding-top:1.5em;margin-top:3em;font-size:16px}.common-footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between}ul.language-select,ul.footer-menu{padding-left:0;list-style:none;display:flex}ul.language-select>li,ul.footer-menu>li{margin-right:1em}.theme-switcher{cursor:pointer}.theme-switcher-svg{fill:currentColor}.h-card{display:none}.highlight{position:relative;overflow:auto}.highlight pre{padding-right:75px}.highlight:hover .highlight-copy-btn{display:inline-block;border:1px solid var(--bg-color)}.highlight-copy-btn{display:none;position:absolute;top:18px;right:2px;border:0;border-radius:4px;padding:1px;font-size:.7em;line-height:1.8;color:#fff;background-color:#777;min-width:25px;text-align:center;border-radius:5px}.highlight-copy-btn:hover{transition-duration:.1s;background-color:#666;border:1px solid var(--bq-color)!important;cursor:pointer}.highlight-copy-btn,.highlight-copy-btn svg{vertical-align:middle;margin:8px}@media(max-width:840px){.main-wrapper{margin:0;max-width:none;overflow-x:hidden;padding-left:25px;padding-right:25px}.container{max-width:90%;margin:0 auto;word-wrap:break-word}.pagination-item{padding:.5em;font-size:14px}.post-navigation{background:var(--pagination-bg-color);text-align:center;padding:.5em 0}.post-navigation a{margin-left:.5em}.post-pagination .pagination-item{max-width:10em}}.site-title small{font-size:50%;color:#aaa}code,pre,kbd,samp{font-family:Monaco,Menlo,Consolas,courier new,heiti sc,STHeiti,microsoft yahei,monospace;font-size:1em;line-height:1.5}h1.post-title{font-size:1.5em}.content .book-columns{display:flex;flex-wrap:wrap}.content .book-columns>div{margin:1rem 0;min-width:10rem;padding:0 1rem;flex:1 1}.content figure.inline img{display:inline;margin:0}.content figure.border img{border:1px solid #ccc}.content .highlight td>pre{padding:0;margin:0}.content .next-code-linenos-inline+.highlight pre{padding:1em 0}.content .next-code-linenos-inline+.highlight code{padding:0}.content .next-code-linenos-inline+.highlight code>span{position:relative;background:inherit;padding-right:1em}.content .next-code-linenos-inline+.highlight code>span>span:first-child{position:sticky;background:inherit;left:0;padding:0 1em!important}article .content figure figcaption p,.content figure figcaption h4{margin:0;font-size:.8em;font-weight:400;font-style:normal;color:#aaa}article .content figure{margin:1em 0}article .content figure figcaption{margin-top:.25em;margin-bottom:0}article .content figure>img{margin-bottom:0}section.attachments{margin:1.5rem 0;position:relative}section.attachments label{font-weight:300;margin:0}section.attachments .attachments-files{display:block;font-size:1rem;margin:0}section.attachments .attachments-files ul{margin-top:0}section.attachments .attachments-files .attachment-size{display:inline-block;color:var(--font-color-muted)}section.attachments .new-tab{padding-left:.1em;padding-right:.1em}.post-license{margin-top:.5em;font-size:small;text-align:center;padding:1em 2em;background:#f6f6f6}.post-license a:first-child{vertical-align:middle}[data-theme=dark] .post-license{background:#495057}[data-theme=dark] #comments{--color-markdown-code-bg:rgba(240, 246, 252, 0.15);--color-bg-tertiary:#161b22;--page-bg:inherit;--page-fg:#fff;--page-action-fg:#ddd;--link-fg:#8c8aff;--link-visited-fg:#be8aff}article strong>img{margin:0}article.post details{padding:1rem;border:1px solid #e9ecef;border-radius:.25rem}article.post details summary{line-height:1;padding:1rem;margin:-1rem;cursor:pointer}article.post details[open] summary{margin-bottom:0;background:#f8f9fa;border-bottom:1px solid #e9ecef;margin-bottom:1em}[data-theme=dark] article.post details[open] summary{background:#212529}em{padding-right:.2em}.content video{max-width:100%;height:auto}.content kbd,.content code,.content tt{padding:.2em .4em;margin:0;white-space:break-spaces;border-radius:6px}.content pre{font-size:.8em;padding:.5em 1em}.content pre>code{padding:0}.pagination-item{display:inline-block;border-bottom-width:0;color:var(--pagination-link-color)}.pagination-item:hover,.pagination-item:focus{color:var(--link-state-color);border-bottom-width:0}a{--bg-color:color-mix(in srgb, var(--link-state-color) 50%, transparent 50%);background:linear-gradient(to right,transparent 0%,var(--bg-color) 15%,var(--link-state-color) 50%,var(--bg-color) 85%,transparent 100%);background-position:bottom;background-size:0% 2px;background-repeat:no-repeat}@media(prefers-reduced-motion:no-preference){a{transition:color .3s,background-size .5s .05s}a:hover,a:focus{background-size:100% 2px;border-bottom:0}}.content.post-summary>a{padding:0 .5em}.social-icons a{background:0 0}.pre-spacing pre,.pre-spacing code{white-space:pre}.alert{padding:1rem 1.5rem;margin:1rem 0;border-radius:.5rem;display:flex;flex-direction:row;gap:1.5rem;border:1px solid;background:var(--alert-bg,inherit);color:var(--alert-fg,inherit);border-color:var(--alert-bdr,#ddd);box-shadow:rgba(0,0,0,.075)0 .125rem .25rem}.alert--icon{display:flex;align-items:center;color:var(--alert-icon)}.alert--content{flex:1}.alert--content p{margin:0}.alert-info{--alert-bg:#c1e5ec;--alert-bdr:#9ad5e0;--alert-icon:#1d6bbf}.alert-error{--alert-bg:#f4c7cb;--alert-bdr:#ec939c;--alert-icon:#721c24}.alert-warning{--alert-icon:#856404;--alert-bg:#ffecad;--alert-bdr:#ffd24d}[data-theme=dark] .alert-warning{--alert-bg:#856404;--alert-icon:#ffd24d;--alert-fg:#ffecad}audio.lyric+canvas{background-color:#fff;border-radius:5px}