/* 見本のページ（/demos/<id>）と見本の一覧（/demos）。紹介ページ（lp.css）の部品を使い、明るい地の読み物にする */
.demo-page { background: var(--bg); }
.demo-main { padding-top: 22px; padding-bottom: 64px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--primary); text-decoration: underline; }
.crumbs span:last-child { color: var(--text); }
.demo-head { margin-bottom: 18px; }
.demo-head h1 { font-size: clamp(24px, 3.2vw, 34px); line-height: 1.35; margin: 4px 0 8px; letter-spacing: .01em; }
.demo-head .lead { color: var(--muted); margin: 0; max-width: 46em; }
.demo-article { max-width: 960px; }
.demo-player { border-radius: 16px; overflow: hidden; background: #000; box-shadow: var(--shadow); }
.demo-player video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #000; }
.demo-note { margin: 10px 2px 0; }
.demo-transcript { margin-top: 40px; }
.demo-transcript h2, .demo-related h2, .demo-cat h2 { font-size: 21px; margin: 0 0 6px; }
.demo-transcript > .fine { margin: 0 0 14px; }
.chapters { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.chapters li { display: flex; gap: 14px; padding: 12px 12px 12px 6px; border-radius: 12px; transition: background .2s; }
.chapters li.now { background: var(--primary-soft); }
.chapters h3 { font-size: 15px; margin: 0 0 2px; }
.chapters p { margin: 0; color: var(--text); line-height: 1.8; }
.chap-time { flex: none; min-width: 56px; height: 28px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface);
  color: var(--primary); font: inherit; font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; cursor: pointer; }
.chap-time:hover { border-color: var(--primary); }
.demo-cta { margin-top: 44px; padding: 26px 28px; border-radius: 18px; color: #fff;
  background: linear-gradient(150deg, #0b1020, #1b3a80); }
.demo-cta h2 { font-size: 20px; margin: 0 0 8px; }
.demo-cta p { color: rgba(255, 255, 255, .82); margin: 0 0 16px; max-width: 46em; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; }
.demo-cta .btn:not(.primary) { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .4); }
.demo-related, .demo-cat { margin-top: 44px; }
.demo-related .demo-grid, .demo-cat .demo-grid { margin-top: 14px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.demo-related .demo-card.featured, .demo-cat .demo-card.featured { grid-column: auto; grid-row: auto; }
.demo-related .demo-card.featured .demo-title, .demo-cat .demo-card.featured .demo-title { font-size: 15px; }
.demo-related .demo-card.featured .demo-play, .demo-cat .demo-card.featured .demo-play { transform: none; }
.demo-related > p { margin-top: 18px; }
.demo-cat h2 small { font-size: 13px; color: var(--muted); font-weight: 600; margin-left: 8px; }

@media (max-width: 760px) {
  .demo-related .demo-grid, .demo-cat .demo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .demo-cta { padding: 22px 18px; }
  .chapters li { gap: 10px; padding: 10px 8px 10px 0; }
  .nav-links { display: none; }
}

/* 見本の下の「この見本が近い用途」 */
.use-fit { margin: 28px 2px 0; font-size: 14px; color: var(--muted); }
.use-fit a { font-weight: 700; }

/* 用途別のページ（/uses/<slug>）と一覧（/uses）、ガイド（/guides/<slug>） */
.use-article, .guide-article { max-width: 960px; }
.use-head .cta-row { margin-top: 18px; }
.use-sec { margin-top: 44px; }
.use-sec > h2, .use-related h2, .guide-body h2 { font-size: 21px; margin: 0 0 14px; }
.use-sec > p { color: var(--text); line-height: 1.85; max-width: 46em; }
.use-sec .features { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.use-sec .feature { background: var(--surface); }
.use-sec .feature p { color: var(--muted); }
.use-sec h3 { font-size: 16px; margin: 22px 0 8px; }
.use-sec .ticks li { color: var(--text); }
.prompt-example { margin: 0; padding: 14px 18px; border-left: 4px solid var(--primary); border-radius: 0 12px 12px 0;
  background: var(--primary-soft); color: var(--text); line-height: 1.8; max-width: 46em; }
.use-sec.faq { max-width: none; }
.use-sec.faq details p { color: var(--muted); }
.use-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.use-cards.big { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.use-card { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; border-radius: 14px; background: var(--surface);
  border: 1px solid var(--border); color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; }
.use-card:hover { border-color: var(--primary); transform: translateY(-1px); }
.use-card b { color: var(--primary); font-size: 12px; }
.use-card span { font-weight: 700; line-height: 1.5; }
.use-card small { color: var(--muted); font-size: 13px; line-height: 1.7; }
.use-related { margin-top: 44px; }

/* ガイド: 目次と本文の読みやすさ（表は横にはみ出したら、その中だけ横に動かす） */
.toc { margin: 8px 0 28px; padding: 16px 20px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); max-width: 46em; }
.toc b { font-size: 14px; }
.toc ol { margin: 8px 0 0; padding-left: 1.4em; display: grid; gap: 4px; font-size: 14px; }
.guide-body { max-width: 46em; line-height: 1.9; }
.guide-body h2 { margin-top: 44px; scroll-margin-top: 80px; }
.guide-body h3 { font-size: 17px; margin: 28px 0 8px; }
.guide-body p, .guide-body li { color: var(--text); }
.guide-body ul, .guide-body ol { padding-left: 1.4em; }
.guide-body li + li { margin-top: 4px; }
.guide-body table { display: block; overflow-x: auto; border-collapse: collapse; margin: 16px 0; font-size: 14px; line-height: 1.6; max-width: 100%; }
.guide-body th, .guide-body td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
.guide-body th { background: var(--surface-2); white-space: nowrap; }
.guide-body small { color: var(--muted); }

/* 共有された動画（/s/<記号>） */
.share-player { position: relative; }
.play-over { position: absolute; inset: 0; display: grid; place-items: center; border: none; cursor: pointer;
  background: linear-gradient(transparent, rgba(0, 0, 0, .25)); }
.play-over span { width: 76px; height: 76px; border-radius: 50%; background: rgba(255, 255, 255, .92); box-shadow: 0 6px 24px rgba(0, 0, 0, .35);
  position: relative; transition: transform .15s; }
.play-over span::after { content: ""; position: absolute; left: 31px; top: 23px; border-style: solid; border-width: 15px 0 15px 24px;
  border-color: transparent transparent transparent #1b3a80; }
.play-over:hover span { transform: scale(1.06); }
.play-over.hidden { display: none; }
.share-msg { margin: 8px 2px 0; color: var(--danger, #c0392b); }
.made-with { margin-top: 28px; }

@media (max-width: 760px) {
  .use-cards, .use-cards.big { grid-template-columns: 1fr; }
  .use-sec { margin-top: 34px; }
}
.use-sec .feature h3 { margin: 0 0 8px; font-size: 16px; }
.use-sec .feature p { margin: 0; }
.guide-body th, .guide-body td { min-width: 7em; }