@import "./typeface.css";*{box-sizing:border-box}html{--background: #fefcfc;--foreground: #000000;--header-size: 18px;--body-size: 20px;--toc-size: 17px;--title-size: 50px;--subtitle-size: 24px;--h2-size: 22px;--mono-size: 15px;--footer-size: 16px;--small-size: 17px;--small-code-size: 15px;--star-size: 20px;--sup-size: 15px}@media screen and (max-width:1023px){html{--header-size: 18px;--body-size: 18px;--toc-size: 18px;--title-size: 50px;--subtitle-size: 20px;--h2-size: 20px;--mono-size: 12px;--footer-size: 14px;--small-size: 14px;--small-code-size: 12px;--star-size: 16px;--sup-size: 12px}}body{font-family:Martina Plantijn,Charter,方正fw筑紫明朝r改,ui-serif,serif;font-size:var(--body-size);line-height:1.5;background-color:var(--background);color:var(--foreground);margin-bottom:3em}body:lang(zh){line-height:1.55}blockquote{font-style:italic}blockquote:lang(zh){font-style:normal;font-family:Martina Plantijn,方正聚珍新仿,ui-serif,serif}html:lang(zh) p{}.cjk-emphasize{text-emphasis-position:under right;text-emphasis-style:dot}.zh-alt{font-family:方正聚珍新仿,ui-serif,serif}.smallcaps{font-variant:small-caps}.lining-num{font-variant-numeric:lining-nums}.oldstyle-num{font-variant-numeric:oldstyle-nums;font-feature-settings:'onum'}.full-width-mark{font-family:方正fw筑紫明朝r改,ui-serif,serif}.squeeze,.last-punc-in-link{font-feature-settings:"halt"}.jpns{font-family:Academica,Source Han Serif JP,ui-serif,serif}.trad{font-family:Academica,Source Han Serif TC,ui-serif,serif}.center{display:flex;justify-content:center}.nobreak{white-space:nowrap}.frac-num{border-bottom:1px solid;width:max-content;margin-bottom:-1px;margin-left:auto;margin-right:auto}.frac-denom{border-top:1px solid;width:max-content;margin-top:-1px;margin-left:auto;margin-right:auto}::selection{color:var(--background);background-color:var(--foreground)}:link,:visited{color:inherit}a{text-decoration:none}a:hover,details:hover{background:#fbeaea;transition-property:background;transition-duration:.2s;border-radius:8px}a:after{margin-left:.1rem;content:"\FEFF↗";color:#933;font-size:15px;font-family:IBM Plex Mono,monospace;vertical-align:top;font-weight:700}.obviously-a-link a:after{content:none}a.obviously-a-link:after{content:none}hr{border-color:var(--foreground)}.title h1{font-weight:400;font-size:var(--title-size);margin:0}.title{margin-top:2rem;margin-bottom:2.5rem}.subtitle{margin:0;margin-top:1rem;font-size:var(--subtitle-size);font-style:italic}h2,h3{margin-top:calc((5rem - var(--h2-size))/2);margin-bottom:calc((5rem - var(--h2-size))/2);font-size:var(--h2-size)}h2{font-weight:700}h3{font-style:italic;font-weight:400}p{margin-top:1rem;margin-bottom:1rem}code,pre.code-block,.mono,.source{font-family:ui-mono,monospace;font-size:var(--mono-size)}figcaption{margin-top:1em;font-size:15px;text-align:center}figure{margin-inline-start:0;margin-inline-end:0}figure img{margin:auto;display:block}img{width:100%;margin:auto}img.half{width:max(50%,300px)}img.twothird{width:max(66%,400px)}details{cursor:pointer;padding-left:4px}body{counter-reset:section-counter subsection-counter}.section{counter-increment:section-counter;counter-reset:subsection-counter}.subsection{counter-increment:subsection-counter}.section:before{content:counter(section-counter) "\2002"}.subsection:before{content:counter(section-counter) "." counter(subsection-counter) "\2002"}#header{display:flex;flex-wrap:wrap-reverse;justify-content:space-between;font-family:Helvetica;font-size:var(--header-size)}#header nav ol{list-style-type:none;padding-left:0}#header nav span{display:inline-block;margin-left:6px;margin-right:6px;font-size:12px;vertical-align:center}@counter-style nodot{system:numeric;symbols:"0""1""2""3""4""5""6""7""8""9";speak-as:numbers;suffix:"  ";}ol{list-style:nodot}dt,dd{margin-bottom:.5rem}#postamble{margin-top:3rem;font-size:var(--footer-size)}#postamble p{margin-bottom:0;margin-top:0}.like-button{margin-bottom:3rem}.footref-anchor{word-wrap:break-word}sup.inline-footref{font-size:var(--sup-size);font-family:Charter;font-weight:900;margin-left:.1rem;text-decoration:none;color:#933;font-variant-numeric:lining-nums}.def-footref a{margin-right:1rem;color:#933;font-family:Charter;font-weight:900;font-size:var(--small-size);font-variant-numeric:lining-nums}.footdef{display:flex;font-size:var(--small-size);margin-bottom:1em;--foreground: gray;color:var(--foreground)}.footdef p{margin-top:0}.footdef code{font-size:var(--small-code-size)}table{border-collapse:collapse;font-variant-numeric:lining-nums}td,th{text-align:left;padding:0 1rem}button.like{display:inline-block;padding:5px 10px;border:2px solid var(--foreground);font-size:20px;margin:0 5px 5px 0;box-sizing:border-box;text-decoration:none;font-family:Helvetica;background-color:var(--background);text-align:center;transition:all .2s;-webkit-appearance:none;-moz-appearance:none;cursor:pointer;opacity:1}button.like:hover{background-color:var(--foreground);color:var(--background)}sup,sub{vertical-align:baseline;position:relative}sup{margin-left:.2rem;margin-right:.2rem;top:-.4rem;font-weight:700}sub{top:.4rem}