/* Page layouts. Keep each component scoped to avoid cross-page collisions. */
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: #fff; }
.nav { max-width: var(--maxw); margin: auto; min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 0 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; }
.brand strong { font-size: 20px; font-weight: 700; letter-spacing: -.5px; }
.brand-sub { font-size: 12px; color: var(--muted); border-left: 1px solid var(--line); padding-left: 16px; margin-left: 8px; }
.mark { position: relative; display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; background: var(--green); color: #fff; border-radius: 8px; font-size: 25px; font-weight: 800; line-height: 1; }
.mark span { position: absolute; top: 2px; right: 3px; font-size: 11px; }
.primary-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; white-space: nowrap; }
.primary-nav a { padding: 8px 0; color: var(--muted); }
.primary-nav a:hover, .primary-nav a.active { color: var(--green); }
.primary-nav a.active { font-weight: 600; }
.primary-nav .nav-claim { border: 1px solid var(--line); border-radius: 6px; padding: 7px 14px; color: var(--green); }
.primary-nav .nav-claim:hover { border-color: #aebfac; background: var(--soft); }
.home-page { padding-bottom: 32px; }
.home-intro { padding: 52px 0 38px; max-width: 760px; }
.home-intro h1 { font-size: 40px; margin-bottom: 12px; }
.home-intro p { color: var(--muted); font-size: 16px; margin: 0; }
.intro-links { display: flex; gap: 24px; margin-top: 20px; }
.content-grid, .home-grid { display: grid; grid-template-columns: minmax(0, 1fr) 224px; gap: 64px; align-items: start; }
.section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.section-head h2 { font-size: 22px; margin: 0; }
.tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.filters { display: flex; flex-wrap: wrap; gap: 4px; margin: 0; }
.filters button { color: var(--muted); border: 0; background: transparent; border-radius: 4px; padding: 7px 10px; font-size: 13px; min-height: 36px; }
.filters button:hover { color: var(--green); background: var(--soft); }
.filters button.selected, .filters button.on { color: var(--green); background: var(--soft); font-weight: 600; }
.search { width: 155px; }
.search input { width: 100%; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); padding: 7px 10px; min-height: 36px; font-size: 13px; }
.search input::placeholder { color: var(--muted); }
.case { padding: 24px 0; border-bottom: 1px solid var(--line); }
.case-top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; }
.case h3 { font-size: 20px; line-height: 1.6; margin: 12px 0 8px; letter-spacing: -.3px; }
.case h3 a:hover { color: var(--green); }
.case p { font-size: 14px; color: var(--ink-2); line-height: 1.8; margin: 0 0 12px; }
.case-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.case-bottom .sample, .read { font-size: 12px; }
.read { color: var(--green); }
.home-notes, .side { padding-top: 4px; }
.home-notes section, .side section { margin-bottom: 32px; }
.home-notes h2, .side h2 { font-size: 15px; margin: 0 0 12px; }
.home-notes a, .side a { display: block; margin: 9px 0; color: var(--green); font-size: 13px; }
.home-notes p, .side p { font-size: 13px; color: var(--muted); line-height: 1.9; margin: 0 0 12px; }
.experience-note { border-top: 1px solid var(--line); padding-top: 24px; }
.reading-guide { margin-top: 32px; border-top: 1px solid var(--line); }
.reading-guide > summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 24px 0; font-weight: 550; font-size: 16px; list-style: none; }
.reading-guide > summary::-webkit-details-marker { display: none; }
.reading-guide > summary span { font-size: 22px; color: var(--muted); }
.reading-guide[open] > summary span { transform: rotate(45deg); }
.reading-guide > article { max-width: 760px; padding: 6px 0 24px; font-size: 16px; color: var(--ink-2); }
.reading-guide h2 { margin: 36px 0 16px; }
.reading-guide h3 { margin: 24px 0 12px; }
.reading-guide li { margin: 12px 0; }
.reading-guide blockquote { margin: 24px 0; padding-left: 20px; border-left: 3px solid #b9cbbb; }
#technical-articles { padding-top: 24px; padding-bottom: 48px; }
#technical-articles h2 { font-size: 20px; margin-bottom: 12px; }
#technical-articles ul { margin: 0; padding: 0; list-style: none; max-width: 760px; }
#technical-articles li { padding: 10px 0; font-size: 14px; }
.page-hero { padding: 44px 0 32px; }
.page-hero p { max-width: 760px; color: var(--muted); font-size: 15px; margin: 0; }
.page-hero .crumb { margin-bottom: 18px; }
.collection-page, .direction-page { padding-bottom: 64px; }
.collection-page .filters { padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.collection-title { font-size: 18px; margin: 24px 0 4px; }
.row { display: grid; grid-template-columns: 36px minmax(0, 1fr); column-gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.row-av .author-avatar { width: 36px; height: 36px; }
.row-title { font-size: 18px; margin: 0 0 9px; line-height: 1.65; font-weight: 600; }
.row-sub { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; font-size: 12px; color: var(--muted); }
.row-author { color: var(--ink-2); }
.row-tag { padding: 2px 7px; background: var(--soft); color: var(--green); border-radius: 4px; }
.row-desc { flex-basis: 100%; margin-top: 4px; font-size: 14px; line-height: 1.8; color: var(--ink-2); }
.row-btn { color: var(--green); font-size: 14px; }
.taglinks { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 16px 0; }
.taglinks a { color: var(--green); font-size: 13px; }
.other-topics { padding-top: 32px; color: var(--muted); font-size: 14px; }
.direction-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.direction-card { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 24px; padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: 8px; align-items: start; }
.direction-card:hover { border-color: #aebfac; }
.direction-photo { height: 130px; border-radius: 5px; background-image: url('/static/topic-scenes.png'); background-size: 300% 200%; background-position: 0 0; }
.scene-1 .direction-photo { background-position: 50% 0; }
.scene-2 .direction-photo { background-position: 100% 0; }
.scene-3 .direction-photo { background-position: 0 100%; }
.direction-body h2 { font-size: 21px; margin: 0 0 8px; }
.direction-body > p { font-size: 14px; color: var(--muted); margin: 0 0 12px; line-height: 1.8; }
.direction-meta { display: flex; justify-content: space-between; gap: 16px; font-size: 12px; color: var(--muted); }
.direction-meta span:last-child { color: var(--green); }
.direction-help { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); }
.direction-help h2 { font-size: 18px; margin-bottom: 8px; }
.direction-help p { font-size: 14px; color: var(--muted); }
.direction-help a { color: var(--green); }
.article { padding-top: 44px; padding-bottom: 64px; }
.article .col { max-width: 760px; margin: auto; }
.article h1 { font-size: 34px; }
.article .post-meta { margin-bottom: 32px; }
.info-page .post-meta { margin: 8px 0 30px; }
.case-reading { padding-top: 30px; padding-bottom: 64px; }
.case-reading-hero { max-width: 820px; border-bottom: 1px solid var(--line); padding-bottom: 24px; }
.case-reading-hero h1 { font-size: 34px; }
.case-deck { font-size: 15px; color: var(--muted); margin: 0 0 16px; }
.case-hero-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-reading-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(0, 224px); gap: 64px; margin-top: 32px; align-items: start; }
.case-reading-main { min-width: 0; }
.case-takeaway { padding: 18px 22px; border-left: 3px solid #b9cbbb; background: var(--soft); }
.case-takeaway h2 { font-size: 14px; margin-bottom: 8px; }
.case-takeaway p { font-size: 16px; margin: 0; color: var(--ink-2); }
.case-source-label { margin: 20px 0 30px; font-size: 12px; color: var(--muted); }
.case-figures { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 24px; }
.case-figures strong { display: block; font-size: 23px; font-weight: 600; }
.case-figures span { display: block; font-size: 12px; color: var(--muted); }
.figures-note { font-size: 12px; color: var(--muted); margin-top: 10px; }
.case-reading-aside { position: sticky; top: 108px; min-width: 0; }
.case-reading-toc { display: flex; flex-direction: column; }
.case-reading-toc h2 { font-size: 14px; margin-bottom: 14px; }
.case-reading-toc a { display: flex; gap: 10px; padding: 7px 0; font-size: 13px; line-height: 1.75; color: var(--muted); }
.case-reading-toc a:hover { color: var(--green); }
.case-reading-toc a > span { font-size: 11px; color: var(--muted); padding-top: 2px; }
.article-trial { margin: 36px 0; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.article-trial h2 { font-size: 18px; margin-bottom: 10px; }
.article-trial p { color: var(--muted); font-size: 14px; }
.article-trial a { display: inline-block; font-size: 14px; color: var(--green); margin: 0 20px 6px 0; }
.case-reading-next > h2 { font-size: 20px; }
.case-reading-next .related { margin: 0; }
.case-reading-next .related > h2 { display: none; }
.claim-page { max-width: 960px; padding-bottom: 64px; }
.claim-hero { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 56px; align-items: start; padding: 28px 0 36px; border-top: 1px solid var(--line); }
.claim-copy > h2 { font-size: 20px; }
.claim-steps { padding-left: 24px; margin: 0; }
.claim-steps li { padding-left: 6px; margin: 0 0 22px; }
.claim-steps h3 { margin: 0 0 6px; font-size: 16px; }
.claim-steps p { font-size: 14px; color: var(--muted); margin: 0; }
.claim-qr { text-align: center; padding: 20px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.claim-qr .btn { margin-top: 18px; }
.claim-qr p { font-size: 12px; color: var(--muted); margin: 10px 0 0; }
.invite-qr { display: block; position: relative; width: 278px; max-width: 100%; aspect-ratio: 1; overflow: hidden; margin: 0 auto; background: #fff; border-radius: 6px; }
.invite-qr img { position: absolute; left: -275.17986%; top: -539.56835%; width: 418.34532%; height: 714.02878%; max-width: none; margin: 0; border-radius: 0; }
.referral-note { font-size: 12px; color: var(--muted); margin: 24px 0 0; }
.claim-faq { max-width: 760px; padding-top: 24px; }
.claim-faq h2 { font-size: 22px; }
.claim-faq details { padding: 18px 0; border-bottom: 1px solid var(--line); }
.claim-faq summary { font-size: 15px; }
.claim-faq details p { font-size: 14px; color: var(--muted); margin: 12px 0 0; }
.claim-faq a { color: var(--green); }
.claim-links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; }
footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; padding-top: 28px; padding-bottom: 24px; color: var(--muted); font-size: 12px; }
.footer-inner .brand strong { font-size: 16px; }
.footer-inner .mark { width: 28px; height: 28px; font-size: 21px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; font-size: 13px; }
.filing { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 24px; padding: 0 20px 26px; font-size: 12px; color: var(--muted); }
.filing a { display: inline-flex; align-items: center; gap: 5px; }
.filing img { width: 18px; height: 20px; object-fit: contain; }
@media (max-width: 1050px) {
  .brand-sub { display: none; }
  .primary-nav { gap: 22px; }
  .content-grid, .home-grid, .case-reading-layout { gap: 36px; }
  .direction-card { grid-template-columns: 86px minmax(0, 1fr); gap: 18px; padding: 20px; }
  .claim-hero { gap: 32px; }
}
@media (max-width: 768px) {
  .nav { min-height: 0; display: block; padding: 14px 20px 0; }
  .brand strong { font-size: 18px; }
  .mark { width: 30px; height: 30px; font-size: 23px; }
  .primary-nav { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; font-size: 13px; }
  .primary-nav a { padding: 6px 0; }
  .primary-nav .nav-claim { padding: 5px 9px; }
  .home-intro { padding: 32px 0 30px; }
  .home-intro h1 { font-size: 31px; }
  .home-intro p { font-size: 15px; }
  .content-grid, .home-grid, .case-reading-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .home-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding-top: 12px; }
  .home-notes section { margin-bottom: 0; }
  .home-notes .experience-note { grid-column: 1 / -1; }
  .tools { display: block; }
  .tools .filters { margin-bottom: 12px; }
  .search { display: block; width: 100%; }
  .case { padding: 24px 0; }
  .case h3 { font-size: 19px; }
  .reading-guide > summary { font-size: 15px; }
  .reading-guide > article { font-size: 16px; }
  .page-hero { padding: 32px 0 28px; }
  .side { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding-top: 24px; border-top: 1px solid var(--line); }
  .side section { margin: 0; }
  .row { column-gap: 12px; }
  .row-title { font-size: 17px; }
  .direction-grid { grid-template-columns: 1fr; gap: 16px; }
  .direction-card { grid-template-columns: 76px minmax(0, 1fr); gap: 16px; padding: 18px; }
  .direction-photo { height: 112px; }
  .direction-body h2 { font-size: 19px; }
  .article, .case-reading { padding-top: 28px; padding-bottom: 44px; }
  .article h1, .case-reading-hero h1 { font-size: 27px; }
  .case-reading-hero { padding-bottom: 24px; }
  .case-reading-aside { position: static; grid-row: 1; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
  .case-reading-toc { max-height: none; overflow: visible; }
  .case-reading-toc h2 { margin-bottom: 8px; }
  .case-reading-toc a { padding: 4px 0; }
  .case-takeaway { padding: 16px 18px; }
  .claim-hero { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .claim-qr { grid-row: 1; max-width: 340px; width: 100%; margin: 0 auto; }
  .claim-faq { padding-top: 0; }
  .footer-inner { align-items: flex-start; }
  .footer-links { gap: 18px; }
  .footer-inner > span:last-child { width: 100%; }
  .filing { justify-content: flex-start; }
}
@media (max-width: 360px) {
  .wrap { padding: 0 16px; }
  .nav { padding-left: 16px; padding-right: 16px; }
  .primary-nav { gap: 6px; font-size: 12px; }
  .primary-nav .nav-claim { padding: 5px 7px; }
  .home-notes, .side { grid-template-columns: 1fr; }
  .home-notes .experience-note { grid-column: auto; }
}

/* Reading improvements and a contextual invitation after the article. */
.case-reading-main > .content, .article .content { font-size: 17px; line-height: 1.9; }
.case-reading-main > .content p, .article .content p { margin: 18px 0; }
.case-reading-main > .content .block-sec { margin: 40px 0; }
.case-source-label a { display: inline-block; color: var(--green); margin-left: 10px; text-decoration: underline; text-underline-offset: 3px; }
.reading-directory > summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; list-style: none; cursor: pointer; font-size: 14px; font-weight: 600; padding: 8px 0 12px; }
.reading-directory > summary::-webkit-details-marker { display: none; }
.reading-directory > summary span { color: var(--muted); font-size: 12px; font-weight: 400; }
.reading-directory > summary::after { content: '＋'; font-size: 18px; color: var(--muted); }
.reading-directory[open] > summary::after { content: '−'; }
.case-reading-toc { max-height: calc(100dvh - 180px); overflow-y: auto; }
.case-reading-toc a { padding: 8px 10px; border-left: 2px solid transparent; }
.case-reading-toc a.is-current { color: var(--green); border-left-color: var(--green); background: var(--soft); }
.source-details { margin: 32px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); }
.source-details > summary { font-size: 14px; color: var(--muted); }
.source-details .content { font-size: 14px; margin-top: 16px; line-height: 1.9; }
.article-experience { display: grid; grid-template-columns: minmax(0,1fr) 196px; gap: 16px 28px; margin: 40px 0; padding: 28px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.article-experience-copy { min-width: 0; }
.article-experience h2 { font-size: 21px; margin: 0 0 16px; }
.article-experience-copy p { font-size: 14px; color: var(--ink-2); line-height: 1.85; margin: 12px 0; }
.article-experience-copy blockquote { margin: 14px 0; padding: 12px 16px; background: var(--soft); border-left: 2px solid #b9cbbb; font-size: 15px; line-height: 1.85; color: var(--ink); }
.experience-guide-link { font-size: 13px; color: var(--green); }
.article-experience-code { text-align: center; min-width: 0; }
.article-experience-code .invite-qr { width: 196px; max-width: 100%; }
.article-experience-code .btn { margin-top: 8px; }
.experience-code-caption { font-size: 13px; margin: 10px 0 0; color: var(--ink); }
.experience-code-help { font-size: 12px; color: var(--muted); line-height: 1.75; margin: 10px 0 6px; }
.experience-disclosure { grid-column: 1 / -1; font-size: 12px; color: var(--muted); line-height: 1.8; margin: 4px 0 0; }
@media (max-width: 768px) {
  .case-reading-main > .content, .article .content { font-size: 17px; }
  .case-reading-layout { margin-top: 20px; gap: 20px; }
  .case-reading-aside { padding: 0; border: 0; }
  .reading-directory > summary { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
  .case-reading-toc { max-height: none; overflow: visible; padding-top: 8px; }
  .case-reading-toc a { padding: 8px 10px; }
  .case-source-label { margin: 0 0 24px; }
  .case-reading-main > .content > .block-sec:first-child { margin-top: 0; }
  .case-reading-main > .content .block-sec { margin: 32px 0; }
  .article-experience { grid-template-columns: minmax(0,1fr); gap: 24px; padding: 24px 0; }
  .article-experience h2 { font-size: 20px; }
  .article-experience-code { max-width: 278px; margin: 0 auto; }
  .article-experience-code .invite-qr { width: 220px; }
  .article-experience-code .btn { min-height: 44px; }
  .experience-disclosure { margin: 0; }
}
.poster-save-help { margin-top: 12px; font-size: 12px; color: var(--muted); }
.poster-save-help summary { font-size: 12px; }
.poster-save-help p { text-align: left; line-height: 1.85; margin: 10px 0 0; }
.poster-save-help a { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.author-blog-hero { max-width: none; padding-bottom: 28px; }
.blog-label { display: block; color: var(--muted); font-size: 13px; margin-bottom: 12px; }
#technical-articles { margin: 0 0 40px; padding: 0 0 32px; border-bottom: 1px solid var(--line); }
#technical-articles .section-head { margin-bottom: 8px; }
#technical-articles .section-head h2 { margin: 0; }
#technical-articles ul { max-width: 820px; }
#technical-articles li { padding: 16px 0; }
#technical-articles li h3 { margin: 0 0 6px; font-size: 18px; line-height: 1.65; }
.blog-post-date { color: var(--muted); font-size: 12px; }
@media (max-width: 768px) {
  #technical-articles { margin-bottom: 32px; padding-bottom: 24px; }
  #technical-articles li h3 { font-size: 17px; }
}

@media (max-width: 768px) {
  .primary-nav { overflow-x: auto; justify-content: flex-start; gap: 20px; }
  .primary-nav a { flex: 0 0 auto; }
}
@media (max-width: 360px) { .primary-nav { gap: 14px; } }