@charset "UTF-8";
:root{
  --paper:#ffffff; --ink:#1c2320; --sub:#555f59; --rule:#d5dcd8;
  --green:#006938; --green-dark:#004d2a; --surface:#f5f6f5;
  --accent-ai:#315d84; --accent-nando:#0f6a75; --accent-odo:#8a5a12; --accent-kon:#283c87;
  --accent-murasaki:#7958a7; --accent-akamurasaki:#692963; --accent-enji:#a44b61; --accent-bengara:#752b11;
  --cat-chemeng:var(--accent-ai); --cat-piping:var(--accent-bengara); --cat-elec:var(--accent-akamurasaki);
  --cat-machine:var(--accent-nando); --cat-data:var(--accent-murasaki); --cat-exam:var(--accent-kon);
  --cat-column:var(--accent-odo);
  --cat:var(--ink);
  --wrap:1120px; --gutter:24px;
}
.c-chemeng{--cat:var(--cat-chemeng)} .c-piping{--cat:var(--cat-piping)} .c-elec{--cat:var(--cat-elec)}
.c-machine{--cat:var(--cat-machine)} .c-data{--cat:var(--cat-data)} .c-exam{--cat:var(--cat-exam)}
.c-column{--cat:var(--cat-column)}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif;
  font-size:16px;line-height:1.8;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.45;font-feature-settings:"palt";word-break:auto-phrase;text-wrap:pretty}
.pick-label,.pick-title,.pick-more li,.pick-all,.pillar-head .desc,.course-name,.course-arts li,.aside-text,.art-list .t-link,
.prevnext .tt,.books p,.act-name,.act-desc,.owner p,.toc a,.plain-list li,.index-list a,.lib-others,
.shelf-note,.consult-line,.tool-row p,.bookbox .t-link,.crumbs,.page-head .desc,.art-meta,.footer-brand p,.lead,figcaption{word-break:auto-phrase;text-wrap:pretty}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--green);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.2em;
  transition:color .12s ease,text-decoration-color .12s ease}
a:hover{color:var(--green-dark);text-decoration-thickness:2px}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.t-link{text-decoration:none;font-weight:700}
.t-link:hover{text-decoration:underline}
.ext{display:inline-block;margin-left:.25em;color:var(--sub);font-size:max(13px,.8125em);font-weight:400;text-decoration:none}
.sq{display:inline-block;width:.625em;height:.625em;margin-right:.4em;background:var(--cat);vertical-align:.06em}
.cat-text{color:var(--cat);font-weight:700}
.tag{display:inline-block;padding:0 .5em;border:1px solid var(--cat);border-radius:2px;color:var(--cat);
  font-size:13px;font-weight:700;line-height:1.7;white-space:nowrap}
.site-header{border-bottom:1px solid var(--rule);background:var(--paper)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.logo{display:block;flex:none}
.logo img{height:40px;width:auto}
.gnav{display:flex;align-items:center}
@media (min-width:1024px){.gnav{margin-right:-12px}}
.gnav>li{display:flex;align-items:center}
.gnav a{display:block;padding:10px 12px 8px;border-bottom:2px solid transparent;color:var(--ink);
  font-size:15px;font-weight:500;line-height:1.5;text-decoration:none;white-space:nowrap}
.gnav a:hover{color:var(--green)}
.gnav a[aria-current="page"]{color:var(--green);border-bottom-color:var(--green)}
.gnav-ext{margin:0 8px;padding:0 4px;border-left:1px solid var(--rule);border-right:1px solid var(--rule)}
.gnav-ext ul{display:flex;align-items:center}
.gnav .ext{margin-left:.2em}
.menu{display:none;position:relative}
.menu summary{display:block;padding:7px 12px;border:1px solid var(--sub);border-radius:4px;cursor:pointer;
  font-size:14px;font-weight:500;line-height:1.5;list-style:none;white-space:nowrap}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{color:var(--green);border-color:var(--green)}
.menu-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:10;width:min(300px,calc(100vw - 32px));
  padding:8px 0;background:var(--paper);border:1px solid var(--rule);border-radius:4px;box-shadow:0 6px 18px rgba(28,35,32,.14)}
.menu-panel a{display:block;padding:10px 16px;color:var(--ink);text-decoration:none;font-weight:500}
.menu-panel a:hover{color:var(--green)}
.menu-panel .menu-group{margin:8px 0 0;padding:8px 0 0;border-top:1px solid var(--rule)}
.menu-panel .menu-note{padding:0 16px;color:var(--sub);font-size:13px}
.sec{margin-top:72px}
.sec-lib{margin-top:48px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px 24px;flex-wrap:wrap;
  padding-top:14px;border-top:2px solid var(--ink);margin-bottom:24px}
.sec-head h2{font-size:1.75rem}
.sec-head .side{font-size:15px}
.sec-lead{max-width:44em;margin:-8px 0 28px;color:var(--sub)}
.sub-head{display:flex;align-items:baseline;justify-content:space-between;gap:4px 24px;flex-wrap:wrap;
  padding-top:12px;border-top:1px solid var(--rule);margin-bottom:20px}
.sub-head h3{font-size:1.375rem}
.sub-head .note{color:var(--sub);font-size:15px}
.num{display:inline-block;min-width:1.4em;color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums}
.crumbs{padding:20px 0 0;font-size:14px;color:var(--sub)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:0 .5em}
.crumbs li+li::before{content:"›";margin-right:.5em;color:var(--sub)}
.intro{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:24px 56px;align-items:end;padding-top:32px}
.lead{font-size:1.5rem;font-weight:700;line-height:1.65;font-feature-settings:"palt";word-break:auto-phrase}
.search label{display:block;margin-bottom:6px;font-size:14px;font-weight:700}
.search-row{display:flex;gap:8px}
.search input{flex:1;min-width:0;height:48px;padding:0 14px;border:1px solid var(--sub);border-radius:2px;
  background:var(--paper);color:var(--ink);font:inherit;font-size:16px}
.search input::placeholder{color:var(--sub)}
.search button,.btn{flex:none;height:48px;padding:0 22px;border:0;border-radius:4px;background:var(--green);color:#fff;
  font:inherit;font-size:16px;font-weight:700;cursor:pointer;transition:background-color .12s ease}
.search button:hover,.btn:hover{background:var(--green-dark)}
.pillar+.pillar{margin-top:48px}
.pillar-head h3{font-size:1.5rem}
.pillar-head .desc{color:var(--sub);font-size:15px}
.pick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:repeat(6,auto);column-gap:32px;row-gap:0}
.pick{display:grid;grid-row:span 6;grid-template-rows:subgrid;row-gap:0}
.pick-grid .pick-more{display:grid;grid-row:span 2;grid-template-rows:subgrid;row-gap:0}
.pick-label{margin-bottom:10px;font-size:15px}
.pick-label a{color:var(--cat);text-decoration:none;font-weight:700}
.pick-label a:hover{text-decoration:underline}
.thumb{display:block;border:1px solid var(--rule);border-radius:4px;overflow:hidden}
.thumb img{width:100%;aspect-ratio:1200/630;object-fit:cover}
.thumb:hover{border-color:var(--green)}
.pick-title{margin-top:12px;font-size:17px;line-height:1.6}
.pick-more{margin-top:12px;border-top:1px solid var(--rule)}
.pick-more li{padding:8px 0;border-bottom:1px solid var(--rule);font-size:15px;line-height:1.6}
.pick-more a{text-decoration:none}
.pick-more a:hover{text-decoration:underline}
.pick-all{margin-top:10px;font-size:15px}
.lib-others{display:flex;flex-wrap:wrap;gap:8px 32px;margin-top:40px;padding:14px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);font-size:15px}
.lib-others .label{color:var(--sub);font-weight:700}
.act-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:56px}
.act-list>li{display:grid;grid-template-columns:120px minmax(0,1fr);column-gap:24px;align-items:center;
  padding:18px 0;border-bottom:1px solid var(--rule)}
.act-list>li:nth-child(-n+2){border-top:1px solid var(--rule)}
.act-logo{display:flex;align-items:center;justify-content:center;height:80px}
.act-logo img{width:auto;height:auto;max-width:100%;max-height:80px;object-fit:contain}
.act-name{font-size:17px;line-height:1.6}
.act-desc{margin-top:2px;color:var(--sub);font-size:15px;line-height:1.7}
.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 56px;margin-top:72px}
.pair>section{display:flex;flex-direction:column}
.pair .books{flex:1;display:flex;flex-direction:column}
.pair .books li{flex:1}
.pair .owner{flex:1}
.pair .sec-head h2{font-size:1.5rem}
.books{border-top:1px solid var(--rule)}
.books li{display:grid;grid-template-columns:3.5em minmax(0,1fr);column-gap:16px;padding:14px 0;border-bottom:1px solid var(--rule)}
.books .kind{color:var(--sub);font-size:14px;font-weight:700;line-height:1.9}
.books .what{display:block;color:var(--sub);font-size:14px}
.owner{display:grid;grid-template-columns:96px minmax(0,1fr);column-gap:24px;align-items:center;
  padding:14px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.avatar{width:96px;height:96px;border-radius:50%;border:1px solid var(--rule);object-fit:cover;background:var(--paper)}
.owner .name{font-size:1.125rem;font-weight:700}
.owner .role{color:var(--sub);font-size:15px}
.owner .links{display:flex;flex-direction:column;align-items:flex-start;gap:2px;margin-top:6px;font-size:15px}
.page-head{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:24px 56px;align-items:start;padding-top:28px}
.page-head h1{font-size:2.125rem;line-height:1.35}
.page-head .desc{margin-top:14px;max-width:34em}
.page-head .count{margin-top:10px;color:var(--sub);font-size:15px}
.pillars{margin:24px 0 0;border-top:1px solid var(--rule)}
.pillars div{display:grid;grid-template-columns:9em minmax(0,1fr);column-gap:16px;padding:10px 0;border-bottom:1px solid var(--rule)}
.pillars dt{font-weight:700}
.pillars dd{margin:0;color:var(--sub);font-size:15px}
.index-list{border-top:2px solid var(--ink)}
.index-list li{border-bottom:1px solid var(--rule)}
.index-list a{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:9px 0;color:var(--ink);text-decoration:none}
.index-list a:hover{color:var(--green)}
.index-list .n{color:var(--sub);font-size:14px;white-space:nowrap}
.index-list .grp-start{border-top:1px solid var(--ink)}
.index-list .pl{margin-left:.6em;color:var(--sub);font-size:13px}
.shelf+.shelf{margin-top:48px}
.shelf .sub-head h3 a{color:var(--ink);text-decoration:none}
.shelf .sub-head h3 a:hover{color:var(--green)}
.shelf-note{margin:-6px 0 20px;font-size:15px}
.course-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px 32px}
.course-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.shelf-split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px}
.course-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.course-aside .course-name span:first-child{font-weight:700}
.aside-text{padding:7px 0;font-size:14.5px;line-height:1.7}
.course-name{display:flex;align-items:baseline;gap:8px;padding-bottom:8px;border-bottom:1px solid var(--ink);font-size:16px}
.course-name a,.course-name a.stub{color:var(--ink);text-decoration:none;font-weight:700}
.course-name a:hover{color:var(--green);text-decoration:underline}
.course-name .n{margin-left:auto;color:var(--sub);font-size:14px;font-weight:400;white-space:nowrap}
.course-arts li{padding:7px 0;border-bottom:1px solid var(--rule);font-size:14.5px;line-height:1.6}
.course-arts a{text-decoration:none}
.course-arts a:hover{text-decoration:underline}
.course-rest{padding-top:6px;color:var(--sub);font-size:14px}
.art-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(var(--rows,4),auto);
  grid-auto-flow:column;column-gap:56px}
.art-list>li{display:grid;grid-template-columns:2em 168px minmax(0,1fr);column-gap:16px;align-items:center;
  padding:14px 0;border-bottom:1px solid var(--rule)}
.art-list>li.top{border-top:1px solid var(--rule)}
.art-list .num{font-size:15px;color:var(--sub)}
.art-list .t-link{font-size:16px;line-height:1.6}
.shelf-foot{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 56px}
.shelf-foot h2{padding-top:12px;border-top:2px solid var(--ink);margin-bottom:10px;font-size:1.25rem}
.plain-list li{padding:9px 0;border-bottom:1px solid var(--rule);font-size:15px}
.plain-list{border-top:1px solid var(--rule)}
.art-head{padding-top:12px}
.art-head h1{margin-top:12px;font-size:2rem;line-height:1.4}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 20px;margin-top:14px;color:var(--sub);font-size:14px}
.art-meta .k{margin-right:.4em}
.art-layout{display:grid;grid-template-columns:minmax(0,1fr) 272px;column-gap:56px;row-gap:0;margin-top:28px;padding-top:28px;border-top:1px solid var(--rule)}
.art-layout>*{min-width:0}
.art-layout>.prose,.art-layout>.art-end{grid-column:1}
.toc-side{grid-column:2;grid-row:1;position:sticky;top:24px;align-self:start}
.toc-title{font-size:15px;font-weight:700;padding-bottom:8px;border-bottom:2px solid var(--ink)}
.toc li{border-bottom:1px solid var(--rule);font-size:14.5px;line-height:1.6}
.toc a{display:block;padding:8px 0;color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--green)}
.toc-inline{display:none;margin:28px 0 0;border:1px solid var(--rule);border-radius:4px}
.toc-inline summary{padding:12px 16px;cursor:pointer;font-weight:700;font-size:15px}
.toc-inline .toc{padding:0 16px 8px}
.prose{font-size:16.5px;line-height:1.9}
.prose>*+*{margin-top:1.1em}
.prose h2{margin-top:56px;padding-top:14px;border-top:2px solid var(--ink);font-size:1.5rem;scroll-margin-top:16px}
.prose h3{margin-top:40px;padding-top:12px;border-top:1px solid var(--rule);font-size:1.1875rem}
.prose h2+*,.prose h3+*{margin-top:16px}
.prose ul{list-style:disc;padding-left:1.4em}
.prose li+li{margin-top:.3em}
.prose strong{font-weight:700}
.prose .cite{color:var(--sub);font-size:14px;line-height:1.7}
.prose figure{width:fit-content;max-width:100%;margin:28px auto 0}
.prose figure img{border:1px solid var(--rule);border-radius:4px}
.prose figcaption{margin-top:8px;color:var(--sub);font-size:14px}
.formula{margin:28px 0 0;padding:14px 0 12px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.formula+.formula{margin-top:0;border-top:0}
.formula:has(+ h2),.formula:has(+ h3){border-bottom:0}
.formula .f-cap{font-size:14.5px;font-weight:700;line-height:1.6}
.formula .f-cap span{display:block;font-weight:400;color:var(--sub)}
.formula .f-body{margin-top:10px;padding:2px 0 6px;overflow-x:auto;overflow-y:hidden}
.formula .f-hint{display:none;margin-top:4px;color:var(--sub);font-size:13px}
.formula.is-wide .f-hint{display:block}
.formula mjx-container[display="true"]{margin:6px 0 !important}
.formula .f-vars{margin-top:8px;color:var(--sub);font-size:14px;line-height:1.75}
.art-end{margin-top:72px}
.end-block+.end-block{margin-top:48px}
.end-block>h2{display:flex;align-items:center;gap:10px;padding-top:12px;border-top:2px solid var(--ink);margin-bottom:16px;font-size:1.25rem}
.art-meta .ad{margin-left:auto;padding:0 .45em;border:1px solid var(--sub);border-radius:2px;color:var(--sub);font-size:13px;font-weight:700;line-height:1.6;letter-spacing:0}
.prevnext{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px}
.prevnext a.pn{display:grid;grid-template-columns:128px minmax(0,1fr);column-gap:16px;align-items:center;padding:14px 0;
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);text-decoration:none}
.prevnext .pn .lbl{display:block;color:var(--sub);font-size:13px;font-weight:700}
.prevnext .pn .tt{display:block;font-weight:700;line-height:1.6}
.prevnext .pn:hover .tt{text-decoration:underline}
.prevnext .pn .thumb-img{border:1px solid var(--rule);border-radius:4px}
.course-link{margin-top:12px;font-size:15px}
.rel-list .t-link{font-size:16px}
.tool-row{display:grid;grid-template-columns:64px minmax(0,1fr);column-gap:20px;align-items:center;padding:14px 0;
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.tool-row img{width:64px;height:64px;object-fit:contain}
.tool-row .site{display:block;color:var(--sub);font-size:14px}
.bookbox{padding:4px 24px;border:1px solid var(--rule);border-radius:4px}
.bookbox li{padding:14px 0;border-bottom:1px solid var(--rule)}
.bookbox li:last-child{border-bottom:0}
.bookbox .why{margin-top:2px;color:var(--sub);font-size:14.5px;line-height:1.75}
.consult-line{margin-top:48px;padding:14px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);font-size:15px}
.prose h4{margin-top:32px;font-size:1.0625rem}
.prose ol{list-style:decimal;padding-left:1.6em}
.prose ul ul,.prose ol ol,.prose ul ol,.prose ol ul{margin-top:.3em}
.prose sup,.prose sub{font-size:.75em;line-height:0}
.prose .note{padding:14px 18px;border:1px solid var(--rule);border-radius:4px}
.prose .note>*+*{margin-top:.7em}
.prose .note ul,.prose .note ol{padding-left:1.4em}
.prose p.linkcard{padding:10px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);font-weight:700;line-height:1.6}
.prose p.linkcard+p.linkcard{margin-top:0;border-top:0}
.prose p.linkcard a{text-decoration:none}
.prose p.linkcard a:hover{text-decoration:underline}
.prose figure.tbl{position:relative;width:auto;max-width:100%;margin:28px 0 0;overflow-x:auto}
.prose table{border-collapse:collapse;font-size:14.5px;line-height:1.6}
.prose th,.prose td{padding:7px 10px;border:1px solid var(--rule);vertical-align:top;text-align:left}
.prose th{font-weight:700}
.prose th,.prose td{overflow-wrap:break-word}
.prose figure.tbl.nw th,.prose figure.tbl.nw td,.prose th.s,.prose td.s{white-space:nowrap}
.prose thead th{border-bottom:2px solid var(--ink)}
.prose figure.tbl figcaption{margin-top:8px}
.prose pre{margin-top:1.1em;padding:12px 14px;background:var(--surface);border-radius:4px;overflow-x:auto;
  font-size:14px;line-height:1.6;white-space:pre}
.prose code{font-family:Consolas,"Courier New",monospace;font-size:.9em;overflow-wrap:anywhere}
.prose pre code{font-size:inherit;overflow-wrap:normal}
.prose :not(pre)>code{padding:0 .25em;background:var(--surface);border-radius:2px}
.prose blockquote{margin:1.1em 0 0;padding:12px 16px;border:1px solid var(--rule);border-radius:4px;color:var(--ink)}
.prose blockquote>*+*{margin-top:.6em}
.prose blockquote cite{display:block;color:var(--sub);font-size:14px;font-style:normal}
.prose iframe{display:block;width:100%;max-width:640px;height:auto;aspect-ratio:16/9;margin:0 auto;border:0}
.prose figure:has(iframe){width:100%}
.tool-row ul{display:flex;flex-direction:column;gap:4px}
.tool-row .t-link{font-size:16px}
.tool-row .site{margin-top:4px}
.end-note{margin-top:12px;font-size:15px}
.tag-list{border-top:1px solid var(--rule)}
.tag-list li{padding:9px 0;border-bottom:1px solid var(--rule);font-size:15px;line-height:1.6}
.tag-list a{text-decoration:none}
.tag-list a:hover{text-decoration:underline}
.prevnext .pn-empty{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.art-rows{border-top:1px solid var(--rule)}
.art-rows>li{display:grid;grid-template-columns:2.2em 200px minmax(0,1fr);column-gap:20px;align-items:start;
  padding:18px 0;border-bottom:1px solid var(--rule)}
.art-rows .num{padding-top:2px;font-size:15px;color:var(--sub)}
.art-rows .t-link{font-size:17px;line-height:1.6}
.art-rows .ex{margin-top:6px;color:var(--sub);font-size:15px;line-height:1.75}
.art-rows.nonum>li{grid-template-columns:200px minmax(0,1fr)}
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px;margin-top:40px}
.pager a{display:block;padding:12px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);text-decoration:none}
.pager .lbl{display:block;color:var(--sub);font-size:13px;font-weight:700}
.pager .tt{display:block;font-weight:700}
.pager a:hover .tt{text-decoration:underline}
.pager .next{text-align:right}
.index-list a[aria-current="page"]{color:var(--green);font-weight:700}
.doc-head{padding-top:28px}
.doc-head h1{font-size:2.125rem;line-height:1.35}
.doc-head .lead-text{max-width:36em;margin-top:14px;font-size:1.125rem;line-height:1.85}
.text{max-width:40em}
.text>*+*{margin-top:12px}
.text h3{margin-top:28px;font-size:1.1875rem}
.text ul{list-style:disc;padding-left:1.4em}
.text ul li+li{margin-top:.3em}
.facts{width:100%;max-width:40em;border-collapse:collapse;border-top:1px solid var(--ink)}
.facts th,.facts td{padding:8px 16px 8px 0;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top;line-height:1.7;font-size:15px}
.facts th{width:7.5em;white-space:nowrap;font-weight:700}
.about-intro{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,3fr);column-gap:48px;align-items:center;margin-top:28px}
.about-intro img{width:100%;max-width:360px;margin:0 auto;border:1px solid var(--rule);border-radius:4px}
.about-intro .lead-text{margin-bottom:16px;font-size:1.125rem;line-height:1.85}
.site-list{border-top:1px solid var(--rule)}
.site-list>li{display:grid;grid-template-columns:120px minmax(0,1fr);column-gap:28px;align-items:center;padding:16px 0;border-bottom:1px solid var(--rule)}
.site-list .logo-cell{display:flex;align-items:center;justify-content:center;height:64px}
.site-list .logo-cell img{width:auto;height:auto;max-width:100%;max-height:64px;object-fit:contain}
.site-list .name,.text-list .name{font-size:17px;font-weight:700;line-height:1.6}
.site-list .desc,.text-list .desc{margin-top:2px;color:var(--sub);font-size:15px;line-height:1.75;max-width:42em}
.text-list{border-top:1px solid var(--rule)}
.text-list>li{display:grid;grid-template-columns:minmax(0,18em) minmax(0,1fr);column-gap:28px;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--rule)}
.text-list.one>li{grid-template-columns:minmax(0,1fr)}
.text-list .kind{color:var(--sub);font-size:14px;font-weight:700;margin-right:.8em}
.owner-big{display:grid;grid-template-columns:120px minmax(0,1fr);column-gap:28px;align-items:start}
.owner-big .avatar{width:120px;height:120px}
.owner-big .person{font-size:1.25rem;font-weight:700;line-height:1.4}
.owner-big .role{color:var(--sub);font-size:15px}
.owner-big .text{margin-top:10px}
.history{margin-top:20px;border-top:1px solid var(--ink)}
.history li{display:grid;grid-template-columns:8em minmax(0,1fr);column-gap:16px;padding:8px 0;border-bottom:1px solid var(--rule);font-size:15px;line-height:1.7}
.history .when{font-weight:700}
.cta{margin-top:20px}
a.btn{display:inline-flex;align-items:center;height:auto;padding:12px 24px;color:#fff;text-decoration:none;line-height:1.4}
a.btn:hover{color:#fff}
.form-frame{margin-top:28px;border:1px solid var(--rule);border-radius:4px}
.form-frame iframe{display:block;width:100%;height:1200px;border:0}
.policy h2{margin-top:48px;padding-top:12px;border-top:2px solid var(--ink);font-size:1.25rem}
.policy h2+p,.policy h2+ul{margin-top:12px}
.policy p+p,.policy p+ul,.policy ul+p{margin-top:12px}
.policy ul{list-style:disc;padding-left:1.4em}
.policy .dates{margin-top:40px;color:var(--sub);font-size:14px}
.sitemap-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 56px}
.sitemap-cols h3{margin-top:24px;padding-bottom:6px;border-bottom:1px solid var(--ink);font-size:1.0625rem}
.sitemap-cols h3 a{color:var(--ink);text-decoration:none}
.sitemap-cols h3 a:hover{color:var(--green);text-decoration:underline}
.sitemap-cols h4{margin-top:14px;font-size:15px}
.sitemap-cols ul li{padding:4px 0;font-size:14.5px;line-height:1.6}
.dated{border-top:1px solid var(--rule)}
.dated li{display:grid;grid-template-columns:7.5em minmax(0,1fr);column-gap:16px;padding:10px 0;border-bottom:1px solid var(--rule);font-size:15px;line-height:1.6}
.dated time{color:var(--sub)}
.dated .where{display:block;color:var(--sub);font-size:13px}
.search-page{max-width:46em;margin-top:24px}
.search-status{margin-top:20px;color:var(--sub);font-size:15px}
.search-results{margin-top:12px;border-top:1px solid var(--rule)}
.search-results li{padding:14px 0;border-bottom:1px solid var(--rule)}
.search-results .where{display:block;color:var(--sub);font-size:13px}
.search-results .t-link{font-size:17px;line-height:1.6}
.search-results .snip{margin-top:4px;color:var(--sub);font-size:14.5px;line-height:1.75}
.search-results .snip strong{color:var(--ink)}
.moved{padding:48px 0}
.site-footer{margin-top:96px;border-top:2px solid var(--ink)}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px 56px;align-items:center;padding-top:28px;padding-bottom:12px}
.footer-brand{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.footer-brand img{height:32px;width:auto}
.footer-brand p{color:var(--sub);font-size:14px}
.footer-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px 28px;font-size:15px}
.copy{padding:12px 0 32px;color:var(--sub);font-size:13px}
.copy-name{margin-left:.4em}
@media (max-width:1023px){
  .gnav .wide-only{display:none}
  .menu{display:block}
  .gnav{gap:4px}
  .course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .course-grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}
  .art-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc-side{display:none}
  .toc-inline{display:block}
}
@media (max-width:1023px){
  .shelf-split{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:860px){
  .intro,.page-head{grid-template-columns:minmax(0,1fr)}
  .pick-grid{column-gap:20px}
  .pick-title{font-size:16px}
  .act-list,.pair,.shelf-foot,.prevnext,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .act-list>li:nth-child(2){border-top:0}
  .pair>section+section{margin-top:56px}
  .art-list{grid-template-columns:minmax(0,1fr);grid-template-rows:none;grid-auto-flow:row}
  .art-list>li.top{border-top:0}
  .art-list>li:first-child{border-top:1px solid var(--rule)}
  .footer-links{justify-content:flex-start}
}
@media (max-width:600px){
  :root{--gutter:16px}
  .site-header .wrap{min-height:64px;gap:8px}
  .logo img{height:30px}
  .gnav a{padding:8px 7px 6px;font-size:14px}
  .menu summary{padding:6px 9px}
  .sec{margin-top:56px}
  .sec-head h2{font-size:1.4375rem}
  .lead{font-size:1.25rem}
  .intro{padding-top:28px}
  .pillar-head h3,.sub-head h3{font-size:1.25rem}
  .sec-lib{margin-top:40px}
  .pick-grid{grid-template-columns:minmax(0,1fr);grid-template-rows:none;gap:0}
  .pick{display:grid;grid-row:auto;grid-template-rows:none;grid-template-columns:120px minmax(0,1fr);column-gap:14px;padding:16px 0;border-bottom:1px solid var(--rule)}
  .pick:first-child{border-top:1px solid var(--rule)}
  .pick-label{grid-column:1/-1;margin-bottom:8px}
  .pick .thumb{grid-column:1;grid-row:2}
  .pick-title{grid-column:2;grid-row:2;margin-top:0;align-self:center}
  .pick-grid .pick-more{display:block;grid-row:auto}
  .pick-more,.pick-all{grid-column:1/-1}
  .lib-others{flex-direction:column;gap:4px;margin-top:0;border-top:0}
  .course-grid,.course-grid.three,.course-grid.two{grid-template-columns:minmax(0,1fr);gap:24px}
  .act-list>li{grid-template-columns:76px minmax(0,1fr);column-gap:16px}
  .act-logo{height:60px}
  .act-logo img{max-height:60px}
  .owner{grid-template-columns:72px minmax(0,1fr);column-gap:16px}
  .owner .avatar{width:72px;height:72px}
  .page-head h1{font-size:1.75rem}
  .art-list>li{grid-template-columns:1.6em 112px minmax(0,1fr);column-gap:12px}
  .art-list .t-link{font-size:15px}
  .art-head h1{font-size:1.5rem}
  .prose{font-size:16px}
  .prose h2{font-size:1.3125rem}
  .pillars div{grid-template-columns:minmax(0,1fr)}
  .prevnext a.pn{grid-template-columns:112px minmax(0,1fr)}
  .bookbox{padding:4px 16px}
}
@media (max-width:860px){
  .about-intro,.sitemap-cols,.pager{grid-template-columns:minmax(0,1fr)}
  .about-intro img{max-width:260px;margin:0 0 20px}
  .text-list>li{grid-template-columns:minmax(0,1fr);row-gap:2px}
  .art-rows>li{grid-template-columns:2em 150px minmax(0,1fr);column-gap:16px}
  .art-rows.nonum>li{grid-template-columns:150px minmax(0,1fr)}
  .pager .next{text-align:left}
}
@media (max-width:600px){
  .doc-head h1{font-size:1.75rem}
  .doc-head .lead-text,.about-intro .lead-text{font-size:1.0625rem}
  .site-list>li{grid-template-columns:72px minmax(0,1fr);column-gap:16px}
  .site-list .logo-cell{height:48px}
  .site-list .logo-cell img{max-height:48px}
  .owner-big{grid-template-columns:80px minmax(0,1fr);column-gap:16px}
  .owner-big .avatar{width:80px;height:80px}
  .history li{grid-template-columns:minmax(0,1fr);row-gap:0}
  .art-rows>li{grid-template-columns:1.6em 112px minmax(0,1fr);column-gap:12px}
  .art-rows.nonum>li{grid-template-columns:112px minmax(0,1fr)}
  .art-rows .t-link{font-size:15px}
  .art-rows .ex{font-size:14px}
  .prose th,.prose td{padding:6px 8px}
  .form-frame iframe{height:1400px}
  .dated li{grid-template-columns:minmax(0,1fr);row-gap:0}
}
@media (prefers-reduced-motion:reduce){
  a,.search button,.btn{transition:none}
}