*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:var(--step,17px)/1.6 var(--family,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif)}
h1,h2,h3{font-family:var(--title-font,inherit);line-height:1.25}
h1{font-size:30px;margin:10px 0 8px}h2{font-size:22px;margin:32px 0 10px}h3{font-size:18px}
a{color:var(--key-color)}a.jump{font-variant-numeric:tabular-nums;text-decoration:none;border-bottom:1px dotted}
img{max-width:100%}
.masthead,.page-foot,.page-body{max-width:var(--span,820px);margin:0 auto;padding:0 20px}
.masthead{display:flex;align-items:center;gap:14px;padding-top:9px;padding-bottom:9px;color:var(--dim);font-size:14px}
.masthead h1{margin:0}
.page-body:first-child{padding-top:24px}
.logo-link{color:var(--ink);text-decoration:none;font-weight:700;font-size:18px}.logo-link .sigil{margin-right:8px}
.logo-link .sigil:only-child{margin-right:0}
.page-foot{padding-top:16px;padding-bottom:28px;color:var(--dim);font-size:14px}
.page-body{padding-bottom:40px}
.preamble{color:var(--dim);margin:0 0 24px}
.subline{color:var(--dim);font-size:14px;margin:0 0 20px}
.route{font-size:14px;color:var(--dim);margin:16px 0 0}.route a{color:var(--dim)}
.video{display:block;position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--corner,10px);overflow:hidden;margin:24px 0 6px}
.video img.poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85;display:block}
.video img{width:100%;height:100%;object-fit:cover;opacity:.85;display:block}
.video iframe{position:relative;z-index:1;width:100%;height:100%;border:0;display:block}
.video.busy::before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.45);z-index:2;pointer-events:none}
.video.busy::after{content:"";position:absolute;left:50%;top:50%;width:26px;height:26px;margin:-13px 0 0 -13px;
border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;z-index:3;pointer-events:none;
animation:circling .8s linear infinite}
@keyframes circling{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.video.busy::after{animation-duration:2.4s}}
.embed-note,.ref{font-size:14px;color:var(--dim)}.embed-note{margin:0 0 20px}
.hint-box{font-size:15px;line-height:1.5;margin:0 0 22px;padding:10px 14px;border-radius:var(--corner,8px);background:var(--tile-bg,rgba(127,127,127,.08));border-left:3px solid var(--key-color)}
.tube-link{display:block;text-decoration:none}
.tube-link>a{display:block;width:100%;height:100%}
.tube-link .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);box-sizing:border-box;z-index:2;padding:0;cursor:pointer;
width:var(--play-w,72px);height:var(--play-h,50px);border-radius:var(--play-radius,14px);
background:var(--play-bg,rgba(17,17,17,.74));border:var(--play-border,0);box-shadow:var(--play-shadow,0 2px 12px rgba(0,0,0,.3));
display:flex;align-items:center;justify-content:center;transition:transform .15s,filter .15s}
.tube-link .play::after{content:"";display:block;margin-left:calc(var(--play-h,50px)*.06);border-style:solid;
border-width:calc(var(--play-h,50px)*.21) 0 calc(var(--play-h,50px)*.21) calc(var(--play-h,50px)*.34);
border-color:transparent transparent transparent var(--play-ink,#fff)}
.tube-link .play:hover,.tube-link .play:focus-visible{transform:translate(-50%,-50%) scale(1.07);filter:brightness(1.1)}
.card .tube-link .play{width:var(--play-w-m,58px);height:var(--play-h-m,40px);border-radius:var(--play-radius-m,12px)}
.card .tube-link .play::after{margin-left:calc(var(--play-h-m,40px)*.06);
border-width:calc(var(--play-h-m,40px)*.21) 0 calc(var(--play-h-m,40px)*.21) calc(var(--play-h-m,40px)*.34)}
.ref{border-top:1px solid var(--border-color);padding-top:12px;margin-top:28px}
.brief{background:var(--tile-bg,#f4f7fb);border-left:4px solid var(--key-color);border-radius:var(--corner,8px);padding:12px 18px;margin:20px 0}.brief h2{margin:0 0 8px;font-size:18px}.brief ul{margin:0;padding-left:20px}
.contents{margin:20px 0}.contents summary{cursor:pointer;font-weight:600}.contents ol{margin:8px 0 0;padding-left:22px;font-size:15px}.contents a{text-decoration:none}
.faq-block details{border-top:1px solid var(--border-color);padding:10px 0}.faq-block summary{cursor:pointer;font-weight:600}
.more-posts{margin-top:36px}.more-posts h2{font-size:20px}.more-posts ul{padding-left:20px}.more-posts li{margin:8px 0}.more-posts span{color:var(--dim);font-size:15px}
.updown{display:flex;justify-content:space-between;gap:16px;font-size:15px;margin-top:24px;padding-top:12px;border-top:1px solid var(--border-color)}.updown a[rel=next]{margin-left:auto;text-align:right}
blockquote{border-left:3px solid var(--key-color);margin:16px 0;padding:4px 16px;color:var(--dim)}
hr{border:0;border-top:1px solid var(--border-color);margin:28px 0}
table{border-collapse:collapse;width:100%;font-size:15px}td,th{border:1px solid var(--border-color);padding:6px 10px;text-align:left}
.cards{display:grid;gap:28px}
.card{background:var(--tile-bg,transparent);border-radius:var(--corner,8px);box-shadow:var(--tile-shadow,none);border:var(--box-border,0)}
.card .video{margin:0}
.entry-body{padding:var(--tile-pad,10px 0 0)}
.card h2{margin:0 0 6px;font-size:20px}.card h2 a{color:var(--ink);text-decoration:none}
.card h2 a:hover,.card h2 a:focus-visible{color:var(--key-color);text-decoration:underline;text-underline-offset:3px}
.card p{margin:0 0 6px;color:var(--dim);font-size:15px}.card time{font-size:13px;color:var(--dim)}
.card p.extract{color:var(--ink);font-size:16px;line-height:1.6;margin:0 0 10px}.m-hero .card.top-item p.extract{font-size:17px}
.m-grid .cards{grid-template-columns:minmax(0,1fr)}
@media(min-width:668px){.m-grid .cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.m-hero .cards{grid-template-columns:minmax(0,1fr)}
@media(min-width:628px){.m-hero .cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.m-hero .card.top-item{grid-column:1/-1}.m-hero .card.top-item h2{font-size:28px}
.view-strip .cards,.m-row-alt .cards{gap:22px}
.view-strip .card,.m-row-alt .card{display:grid;grid-template-columns:240px minmax(0,1fr);align-items:start;gap:18px;overflow:hidden}
.card>:only-child{grid-column:1/-1}
.paging{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:center;margin:34px 0 10px}
.paging a,.paging b{display:inline-block;min-width:40px;padding:8px 12px;text-align:center;border-radius:var(--corner,8px);
border:1px solid var(--border-color);text-decoration:none;color:var(--ink);font-size:15px;line-height:1.2}
.paging a:hover{border-color:var(--key-color);color:var(--key-color)}
.paging b{background:var(--key-color);border-color:var(--key-color);color:var(--bg)}
.paging span{color:var(--dim);padding:0 2px}
.m-row-alt .card{grid-template-columns:minmax(0,1fr) 240px}
.m-row-alt .card>.tube-link{order:2}
.view-strip .entry-body,.m-row-alt .entry-body{padding:var(--tile-pad,4px 12px 12px 0)}
.view-strip .card h2,.m-row-alt .card h2{font-size:19px}
@media(max-width:700px){.view-strip .card,.m-row-alt .card{grid-template-columns:minmax(0,1fr)}.m-row-alt .card>.tube-link{order:0}}
.view-duo .cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media(max-width:700px){.view-duo .cards{grid-template-columns:minmax(0,1fr)}}
.dense-view .cards{grid-template-columns:minmax(0,1fr);gap:18px}
@media(min-width:498px){.dense-view .cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:736px){.dense-view .cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.dense-view .card h2{font-size:17px}.dense-view .card p{font-size:14px}
.l-wide .cards{grid-template-columns:minmax(0,1fr);gap:34px}
.l-wide .card h2{font-size:24px}
.l-wide .card.top-item h2{font-size:30px}
@media(min-width:498px) and (max-width:735.98px){
.dense-view .card:nth-child(2n+1):last-child{grid-column:span 2;display:grid;grid-template-columns:calc((100% - 18px)/2) minmax(0,1fr);column-gap:18px;align-items:start}
}
@media(min-width:736px){
.dense-view .card:nth-child(3n+1):last-child{grid-column:span 3;display:grid;grid-template-columns:calc((100% - 36px)/3) minmax(0,1fr);column-gap:18px;align-items:start}
.dense-view .card:nth-child(3n+2):last-child{grid-column:span 2;display:grid;grid-template-columns:calc((100% - 18px)/2) minmax(0,1fr);column-gap:18px;align-items:start}
}
@media(min-width:668px){
.m-grid .card:nth-child(2n+1):last-child{grid-column:span 2;display:grid;grid-template-columns:calc((100% - 28px)/2) minmax(0,1fr);column-gap:28px;align-items:start}
}
@media(min-width:628px){
.m-hero .card:nth-child(2n+1 of .card:not(.top-item)):last-child{grid-column:span 2;display:grid;grid-template-columns:calc((100% - 28px)/2) minmax(0,1fr);column-gap:28px;align-items:start}
}
@media not all and (max-width:700px){
.view-duo .card:nth-child(2n+1):last-child{grid-column:span 2;display:grid;grid-template-columns:calc((100% - 24px)/2) minmax(0,1fr);column-gap:24px;align-items:start}
}
.l-rail.p-post .page-body{max-width:calc(var(--span,820px) + 300px)}
.body-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;overflow-wrap:anywhere}
.l-rail .body-wrap{grid-template-columns:minmax(0,1fr) 260px}
.l-rail .side{position:sticky;top:20px;align-self:start;font-size:15px}
.l-rail .side .contents{margin:0 0 24px}.l-rail .side .more-posts{margin-top:0}.l-rail .side .more-posts h2{font-size:17px;margin-top:0}.l-rail .side .more-posts ul{padding-left:18px}.l-rail .side .more-posts span{display:none}
@media(max-width:900px){.l-rail .body-wrap{grid-template-columns:minmax(0,1fr)}.l-rail .side{position:static}.l-rail.p-post .page-body{max-width:var(--span,820px)}}
@media(max-width:600px){body{font-size:16px}h1{font-size:24px}.m-hero .card.top-item h2{font-size:22px}}

:root{--bg:#f2faf6;--ink:#172a22;--dim:#63806f;--key-color:#12876a;--border-color:#d6e9df;--tile-bg:#ffffff;--corner:16px;
--family:"Segoe UI",system-ui,Roboto,sans-serif;--title-font:"Segoe UI",system-ui,sans-serif;
--play-bg:#12876a;--play-ink:#fff;--play-radius:999px;--play-border:3px solid rgba(255,255,255,.8)}
.card{box-shadow:0 2px 12px rgba(20,90,70,.08)}
.brief{background:#dff2e9}
h1,h2{color:#0f5f4c}
.updown a{color:var(--key-color)}