:root{font-family:system-ui,-apple-system,"Noto Sans JP","Yu Gothic",sans-serif;color:#28312f;background:#fff;font-synthesis:none;line-height:1.85}*{box-sizing:border-box}body{margin:0;overflow-wrap:anywhere}a{color:var(--accent);text-underline-offset:.22em}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}h1,h2,h3{line-height:1.45;letter-spacing:.015em}h1{font-size:clamp(1.9rem,4vw,3.2rem);margin:.4em 0}h2{font-size:1.45rem;margin:0 0 1em}h3{font-size:1.15rem}p{margin:.75em 0}main,.site-header,footer{max-width:1120px;margin:auto;padding:28px 32px}.site-header{display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid #e1e7e4}.brand{font-weight:750;font-size:1.15rem;text-decoration:none}nav{display:flex;gap:20px;font-size:.85rem}nav a{padding:8px 0}.hero{padding:35px 0 30px;max-width:760px}.eyebrow{color:var(--accent);font-size:.8rem;font-weight:700;letter-spacing:.07em}.lead{font-size:1.08rem}.muted,figcaption{color:#606d67;font-size:.88rem}main>section{margin:24px 0 52px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:22px}.card{border:1px solid #dce5df;border-radius:14px;padding:24px;min-width:0;background:#fff}.card h3 a{text-decoration:none}.reading{max-width:760px;margin:22px auto 55px}.reading h1{font-size:clamp(1.8rem,3.8vw,2.65rem);max-width:18ch;text-wrap:balance}.article-subtitle{margin:.35em 0 1.1em;font-size:clamp(1.08rem,2.2vw,1.3rem);line-height:1.65;font-weight:650;color:#43514c;max-width:34ch;text-wrap:balance}.reading>section{margin-top:38px}.article-body{font-size:1.05rem;line-height:2}.article-body h2{margin-top:2em;border-bottom:1px solid #dce5df;padding-bottom:12px;display:flex;align-items:center;gap:.55em}.article-body h3{margin-top:1.8em}.heading-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 1.8em;width:1.8em;height:1.8em;border-radius:999px;background:#f2f6f3;color:var(--accent);font-size:.78em;font-weight:800;line-height:1}.character-callout{margin:2.15em 0 -.45em;display:flex;align-items:flex-end;gap:8px}.guide-character{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:#f2f6f3;font-size:1.25rem;line-height:1;flex:0 0 auto}.character-bubble{display:inline-block;position:relative;padding:8px 12px;border-radius:14px 14px 14px 4px;background:#f2f6f3;color:#46534f;font-size:.85rem;font-weight:750;line-height:1.3}.character-bubble:before{content:"";position:absolute;left:-6px;bottom:6px;border-width:6px 6px 0 0;border-style:solid;border-color:transparent #f2f6f3 transparent transparent}.article-body p{margin:1.2em 0}.summary,.cta-panel{background:#f2f6f3;border-radius:12px;padding:24px}.disclosure{font-size:.8rem;color:#606d67}.button{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:12px 22px;border-radius:8px;background:var(--accent);color:white;text-decoration:none;font-weight:650;margin:8px 8px 8px 0;max-width:100%}.disabled{background:#e0e7e2;color:#39483f}.media-image{margin:24px 0}.media-image img{display:block;width:100%;height:auto;border-radius:10px;object-fit:contain;max-height:560px}.card .media-image{margin:0 0 18px}.card img{aspect-ratio:16/9;object-fit:cover}figcaption{margin-top:8px}dt{font-weight:650;margin-top:14px}dd{margin-left:0;font-size:.95rem}.themes{display:flex;flex-wrap:wrap;gap:12px;list-style:none;padding:0}.themes li{border:1px solid #dce5df;border-radius:30px;padding:4px 16px}footer{border-top:1px solid #dce5df;font-size:.88rem;color:#606d67;display:grid;grid-template-columns:1fr 1fr;gap:40px}footer h2{font-size:1rem}.preview-banner{background:#edf3ef;border-bottom:1px solid #dce5df;text-align:center;padding:12px 24px;font-size:.9rem}.skip{position:absolute;left:16px;top:-100px;background:#fff;padding:12px}.skip:focus{top:8px}pre{overflow:auto;background:#f4f6f5;padding:16px;border-radius:8px}code{font-size:.9em}@media(max-width:600px){main,.site-header,footer{padding:20px}.site-header{align-items:flex-start;flex-direction:column;gap:6px}nav{gap:20px}.hero{padding:16px 0}.reading{margin-top:12px}.button{width:100%;margin-right:0}.card,.summary,.cta-panel{padding:20px}footer{grid-template-columns:1fr;gap:16px}.article-body{font-size:1rem}.preview-banner{text-align:left}.cards{grid-template-columns:1fr}}

body{background:linear-gradient(180deg,#fbfdfc 0,#fff 280px)}
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(10px)}
.site-header .brand{font-size:1.25rem;letter-spacing:.02em}
.home-hero{padding:64px 0 48px;max-width:860px}
.home-hero h1{font-size:clamp(2.5rem,6vw,4.6rem);max-width:10ch;letter-spacing:-.03em}
.home-hero .lead{max-width:720px;font-size:clamp(1.05rem,2.3vw,1.24rem);color:#46534f}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-meta span{padding:7px 13px;border:1px solid #dce5df;border-radius:999px;background:#fff;font-size:.85rem;color:#53615c}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:18px}
.section-heading h2{margin:.15em 0 0}
.section-heading>p{max-width:360px;color:#606d67;font-size:.92rem}
.featured{padding:28px;border:1px solid #dce5df;border-radius:24px;background:#f6faf7}
.featured .cards{grid-template-columns:1fr}
.featured .card{border:0;padding:28px;background:#fff;box-shadow:0 10px 30px rgba(35,70,60,.06)}
.latest{padding-top:8px}
.card{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(35,70,60,.08);border-color:#cbdad2}
.card h3{font-size:1.2rem;margin:.45em 0 .8em}
.card p{color:#53615c}
.card-date{font-size:.78rem;color:#7a8782!important}
.card-link{display:inline-flex;align-items:center;gap:8px;font-weight:700;text-decoration:none;margin-top:8px}
.topic-section,.site-note{border-top:1px solid #e3eae6;padding-top:38px}
.site-note{max-width:780px}
.site-note p:last-child{font-size:1.02rem;color:#46534f}
.reading>header{padding-bottom:24px;border-bottom:1px solid #e3eae6}
.reading .lead{color:#4f5d58}
.related{max-width:960px;margin:0 auto 56px}
footer{background:#f8faf9;max-width:none;padding-left:max(32px,calc((100vw - 1120px)/2 + 32px));padding-right:max(32px,calc((100vw - 1120px)/2 + 32px))}
@media(max-width:600px){
  .site-header{position:static}
  .home-hero{padding:34px 0 26px}
  .home-hero h1{font-size:2.6rem}
  .section-heading{display:block}
  .featured{padding:16px;border-radius:18px}
  .featured .card{padding:20px}
  footer{padding-left:20px;padding-right:20px}
}


/* Reader-first article polish (new articles only) */
.reader-v2.article-hero,.reader-v2 .article-hero{padding-bottom:34px!important}
.reader-v2 .article-meta{display:flex;flex-wrap:wrap;gap:8px 14px;margin:14px 0 20px;color:#65716c;font-size:.82rem}
.reader-v2 .article-meta span{display:inline-flex;align-items:center;gap:6px}
.reader-v2 .article-meta span+span:before{content:"·";margin-right:4px;color:#9aa49f}
.reader-v2 .article-intro{max-width:42em;color:#46534f}
.reader-v2 .first-look{margin:26px 0 18px;padding:22px 24px;border:1px solid #dbe6df;border-radius:16px;background:linear-gradient(180deg,#f7fbf8,#f3f8f5)}
.reader-v2 .first-look-label{margin:0 0 8px;color:var(--accent);font-size:.8rem;font-weight:800;letter-spacing:.08em}
.reader-v2 .first-look>p:last-of-type{font-size:1.05rem;color:#3f4c47}
.reader-v2 .first-look ul,.reader-v2 .learn-box ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:9px}
.reader-v2 .first-look li,.reader-v2 .learn-box li{position:relative;padding-left:1.6em}
.reader-v2 .first-look li:before,.reader-v2 .learn-box li:before{content:"✓";position:absolute;left:0;top:.05em;color:var(--accent);font-weight:800}
.reader-v2 .learn-box{margin:14px 0 18px;padding:20px 22px;border:1px solid #e1e8e4;border-radius:14px;background:#fff}
.reader-v2 .article-toc{margin:14px 0 0;padding:20px 22px;border:1px solid #e1e8e4;border-radius:14px;background:#fff}
.reader-v2 .toc-title{margin:0 0 10px;font-weight:800;color:#34413c}
.reader-v2 .article-toc ol{margin:0;padding-left:1.4em;display:grid;gap:6px}
.reader-v2 .article-toc a{text-decoration:none;color:#3f4d48}
.reader-v2 .article-toc a:hover{text-decoration:underline}
.reader-v2 .article-body{padding-top:10px;line-height:2}
.reader-v2 .article-body h2{scroll-margin-top:88px;margin-top:2.8em;padding:16px 0 13px;border-bottom:2px solid #e4ece7}
.reader-v2 .article-body h2:first-child{margin-top:2em}
.reader-v2 .article-body h3{margin-top:2.1em;color:#36433e}
.reader-v2 .article-body p{max-width:42em}
.reader-v2 .article-body ul{padding-left:1.35em;margin:1.15em 0 1.45em}
.reader-v2 .article-body li+li{margin-top:.45em}
.reader-v2 .article-body strong{color:#25302c}
.reader-v2 .character-callout{margin-top:2.6em}
.reader-v2 .character-bubble{box-shadow:0 4px 14px rgba(35,70,60,.05)}
.reader-v2 .next-step{margin-top:48px!important;padding:26px 28px;border-radius:16px;background:#fbfaf4;border:1px solid #ece7d6}
.reader-v2 .next-step h2{margin:.15em 0 .45em}
.reader-v2 .next-step p:last-child{color:#4d554e}
.reader-v2 .cta-panel{border:1px solid #d9e5de;background:#f4f9f6}
.reader-v2 .references{border-top:1px solid #e3eae6;padding-top:30px}
.reader-v2 .references p{color:#5b6863;font-size:.95rem}
.reader-v2-related{padding-top:22px}
.reader-v2-related>.cards:empty{display:none}

@media(max-width:600px){
  .reader-v2 h1{font-size:clamp(1.72rem,8vw,2.25rem);max-width:none;line-height:1.4}
  .reader-v2 .article-subtitle{font-size:1.04rem;max-width:none}
  .reader-v2 .article-meta{gap:5px 10px;margin:12px 0 16px}
  .reader-v2 .article-meta span+span:before{display:none}
  .reader-v2 .first-look{padding:18px;margin:20px 0 14px}
  .reader-v2 .first-look>p:last-of-type{font-size:1rem}
  .reader-v2 .learn-box,.reader-v2 .article-toc{padding:17px 18px}
  .reader-v2 .article-body{line-height:1.9}
  .reader-v2 .article-body h2{margin-top:2.35em;font-size:1.28rem;align-items:flex-start}
  .reader-v2 .heading-icon{margin-top:.05em}
  .reader-v2 .character-callout{margin:2em 0 -.25em}
  .reader-v2 .guide-character{width:34px;height:34px;font-size:1.1rem}
  .reader-v2 .character-bubble{font-size:.8rem}
  .reader-v2 .next-step{padding:20px}
  .reader-v2-related{margin-bottom:36px}
}