/* CSW site-wide visual system: approved photographic cover / field directory.
   Loaded last on home, archive, article, video, series and information pages. */
:root {
  --csw-font: Poppins, OPPOSans, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --csw-paper: #fafaf7;
  --csw-ink: #20241e;
  --csw-muted: #64695f;
  --csw-line: #ced1c7;
  --csw-field: #202a22;
  --csw-gutter: clamp(22px, 5vw, 88px);
  --csw-rail: minmax(150px, 1fr);
  --csw-main: minmax(0, 3fr);
  --csw-gap: 40px;
  --feature-paper: var(--csw-paper);
  --feature-ink: var(--csw-ink);
  --feature-muted: var(--csw-muted);
  --feature-line: var(--csw-line);
  --feature-gutter: var(--csw-gutter);
}
:lang(ja) { --csw-font: Poppins, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; }
body { font-family: var(--csw-font); }
button, input, textarea, select { font-family: var(--csw-font); }

/* Navigation and the closing signature are shared across page types. */
.feature-header {
  background: var(--csw-paper);
  color: var(--csw-ink);
  min-height: 92px;
  padding: 16px var(--csw-gutter);
  border-bottom: 1px solid var(--csw-line);
  gap: 32px;
}
.feature-header > a { width: 220px; flex: none; }
.feature-header > a img { filter: brightness(0); height: auto; }
.feature-header nav { gap: 28px; font-size: 12px; }
.feature-header nav a { min-height: 44px; display: inline-flex; align-items: center; }
.feature-header nav a:hover { text-decoration: underline; text-underline-offset: 6px; }
.site-footer, .feature-site-footer {
  background: var(--csw-paper);
  color: var(--csw-muted);
  border-top: 1px solid var(--csw-line);
  padding: 48px var(--csw-gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 32px;
  font: 400 12px/1.7 var(--csw-font);
}
.footer-brand { display: block; width: 220px; flex: none; margin-right: auto; }
.footer-brand img { width: 100%; height: auto; filter: brightness(0); }
.feature-site-footer .footer-brand + span { width: auto; }
.site-footer .seo-footer-nav { width: 100%; justify-content: flex-end; margin-top: 8px; }
.site-footer a, .feature-site-footer a { min-height: 44px; align-content: center; }

/* Homepage: one alignment system, with image scale supplying the contrast. */
.section-shell { padding-block: 88px; }
.content-section .chapter-heading,
.community-section .chapter-heading,
.work-section .chapter-heading,
.updates-section .chapter-heading,
.partnership-section .chapter-heading {
  display: grid;
  grid-template-columns: var(--csw-rail) var(--csw-main);
  gap: var(--csw-gap);
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.chapter-heading .eyebrow { margin: 4px 0 0; font-size:12px; }
.chapter-heading h2,
.community-section .chapter-heading h2,
.updates-section .chapter-heading h2,
.partnership-section .chapter-heading h2 {
  font-size: clamp(38px, 4.5vw, 64px);
  line-height: 1.2;
  letter-spacing: -.045em;
  font-weight: 400;
  margin: 0;
  max-width: 19ch;
  text-wrap: pretty;
}
.editorial-intro {
  display: grid;
  grid-template-columns: var(--csw-rail) var(--csw-main);
  gap: 24px var(--csw-gap);
  margin: 24px 0 44px;
}
.editorial-intro > p { grid-column: 2; font-size: 16px; max-width: 640px; margin: 0; }
.editorial-intro .home-content-links,
.editorial-intro > .text-link { grid-column: 2; justify-self: start; margin: 0; }
.text-link { min-height: 44px; font-size: 13px; }
.work-intro { padding-left: calc((100% - var(--csw-gap)) / 4 + var(--csw-gap)); font-size: 16px; }
.work-section > .case-directory { max-width: calc(1600px - 2 * var(--gutter)); margin-inline: auto; }
.work-section .text-link:hover { color: #d8d9bf; }
.home-feature-grid { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 32px 40px; }
.home-feature-card:first-child .home-feature-image { aspect-ratio: 3/2; }
.home-feature-card:first-child h3 { font-size: clamp(28px, 3vw, 42px); max-width: 27ch; }
.home-feature-card:not(:first-child) { display: block; padding-top: 20px; }
.home-feature-card:not(:first-child) .home-feature-image { width: 42%; aspect-ratio: 3/2; margin-bottom: 18px; }
.home-feature-card:not(:first-child) h3 { font-size: 22px; line-height: 1.5; }
.home-feature-meta, .home-feature-card > div > span { font-size:12px; }
.content-section > .editorial-details { margin-top: 0; }
.editorial-details summary { min-height: 56px; font-size: 15px; }
.editorial-details[open] > summary > span { transform: rotate(45deg); }
.editorial-details > summary > span { transition: transform .2s; }
.content-feature .column-list p { font-size: 14px; }

/* A photographic strip leads into compact, expandable community records. */
.community-section { padding-top: 32px; }
.community-photo-strip { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 6px; }
.community-photo-strip figure { min-width: 0; margin: 0; }
.community-photo-strip img { height: clamp(240px, 30vw, 440px); width: 100%; object-fit: cover; }
.community-photo-strip figcaption { font: 400 12px/1.6 var(--csw-font); color: var(--muted); padding-top: 12px; }
.community-directory { border-top: 1px solid var(--line); margin-top: 36px; }
.community-entry { border-bottom: 1px solid var(--line); }
.community-entry > summary {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto 18px;
  gap: 24px;
  align-items: center;
  list-style: none;
  cursor: pointer;
  padding: 26px 0;
}
.community-entry > summary::-webkit-details-marker { display: none; }
.community-entry h3 { font-size: clamp(23px, 2.4vw, 34px); font-weight: 400; line-height: 1.35; margin: 0; }
.community-number, .community-kind { font: 400 12px/1.6 var(--csw-font); color: var(--muted); }
.community-entry[open] .case-toggle:after { transform: rotate(0); }
.community-entry-body { display: grid; grid-template-columns: 1fr 3fr; gap: 40px; padding: 8px 0 32px; }
.community-entry-body > figure { margin: 0; max-width: 220px; }
.community-entry-body > figure img { width: 100%; height: auto; object-fit: contain; }
.community-entry-body > div { max-width: 680px; }
.community-entry-body p { font-size: 16px; line-height: 1.9; margin-top: 0; }
.community-entry-body .event-status { font-size: 12px; margin-top: 18px; }
.community-entry-body .tour-stories strong { font-size: 14px; }
.community-entry-body .tour-stories a { color: var(--ink); }
.community-entry[open] .community-entry-body { animation: case-reveal .35s ease-out; }
.community-section .section-link { margin-top: 24px; }

/* About and services give enough context, then let the reader choose depth. */
.about-section, .partnership-section { background: var(--paper); }
.about-intro { display: grid; grid-template-columns: 1fr 3fr; gap: 40px; padding-top: 64px; padding-bottom: 40px; }
.about-intro > div { grid-column: 2; grid-row: 1; }
.about-intro > figure { grid-column: 1; grid-row: 1; padding-top: 0; margin: 0; align-self: end; }
.about-intro .chapter-heading { border-top: 1px solid var(--line); padding-top: 24px; }
.about-intro .chapter-heading .eyebrow { margin-bottom: 24px; }
.about-intro .chapter-heading h2 { font-size: clamp(36px, 4vw, 56px); max-width: 16ch; }
.about-intro > div > p:not(.eyebrow) { font-size: 16px; max-width: 640px; line-height: 1.9; margin-top: 24px; }
.about-platform-details { max-width: 1600px; margin: 0 auto; padding: 0 var(--gutter) 48px; }
.about-platform-details > summary { display: flex; justify-content: space-between; cursor: pointer; list-style: none; border-block: 1px solid var(--line); padding: 20px 0; font-size: 15px; }
.about-platform-details > summary::-webkit-details-marker { display: none; }
.about-platform-details > summary > span { font-size: 20px; transition: transform .2s; }
.about-platform-details[open] > summary > span { transform: rotate(45deg); }
.about-platform-details .operate-section, .about-platform-details .ecosystem-section { padding: 28px 0 0; }
.about-platform-details .compact-heading { border: 0; padding: 0; }
.about-platform-details .flow-list p { font-size: 14px; }
.partnership-section > .section-shell:first-child { padding-block: 40px 88px; }
.partnership-intro { margin: 24px 0 40px; padding-left: calc((100% - var(--csw-gap)) / 4 + var(--csw-gap)); max-width: none; font-size: 16px; }
.partnership-grid > article, .partnership-grid > article:first-child { grid-template-columns: 30px 1fr 1.2fr 110px; gap: 16px 28px; padding: 24px 0; }
.partnership-grid h3 { font-size: 24px; }.partnership-grid p { font-size: 15px; }
.partnership-grid summary, .partnership-grid ul { font-size: 14px; }
.contact-section { border-top: 1px solid var(--line); }
.contact-section > .section-shell { grid-template-columns: minmax(0, 3fr) minmax(0, 1fr); gap: 40px; }
.contact-copy h2 { font-size: clamp(40px, 5vw, 72px); max-width: 15ch; }
.contact-copy > p:not(.eyebrow) { font-size: 16px; max-width: 600px; }
.contact-image { margin-top: 48px; aspect-ratio: 3/4; }
.contact-paths > a, .contact-paths button { font-size: 14px; min-height: 44px; }
.contact-section .social-block { grid-template-columns: 1fr 3fr; gap: 40px; }
.social-block strong { font-size: 13px; }

/* Archive, project and article pages use the same marginal column. */
.features-index, .info-main, .article-page { max-width: 1600px; margin-inline: auto; padding: 64px var(--csw-gutter) 96px; }
.features-masthead, .info-heading, .article-heading, .article-related-heading {
  grid-template-columns: var(--csw-rail) var(--csw-main);
  gap: 24px var(--csw-gap);
}
.features-masthead > p:first-child, .info-kicker, .article-kicker { font-size:12px; color: var(--csw-muted); }
.features-masthead h1 { font-size: clamp(48px, 6.5vw, 88px); font-weight: 400; line-height: 1.1; letter-spacing: -.05em; }
.features-masthead > p:last-child, .info-dek, .article-dek { font-size: 18px; line-height: 1.8; max-width: 680px; }
.info-heading h1, .article-heading h1 { font-size: clamp(38px, 4.5vw, 64px); font-weight: 400; line-height: 1.28; letter-spacing: -.035em; }
.article-heading h1 { max-width: 23ch; }
.info-heading h1 .heading-brand { font-size: clamp(28px, 4vw, 56px); }
.article-byline { font-size:12px; line-height: 1.7; gap: 10px 24px; }
.info-crumbs { font-size: 12px; line-height: 1.8; margin-bottom: 28px; }
.editorial-sections { margin-top: 40px; gap: 40px; }
.editorial-sections a { font-size: 20px; font-weight: 400; border-bottom-width: 1px; }
.archive-series { display: block; border-bottom: 1px solid var(--csw-line); margin: 24px 0 48px; }
.archive-series a { display: grid; grid-template-columns: var(--csw-rail) var(--csw-main); gap: 40px; padding: 18px 0; border: 0; border-top: 1px solid var(--csw-line); }
.archive-series strong { font-size: 18px; font-weight: 400; color: var(--csw-ink); }
.archive-series small { margin: 0; font-size: 14px; color: var(--csw-muted); }
.archive-series-index { margin: 24px 0 32px; border-bottom: 1px solid var(--csw-line); }
.archive-series-index > summary { display: flex; justify-content: space-between; list-style: none; cursor: pointer; padding: 16px 0; font-size: 15px; }
.archive-series-index > summary::-webkit-details-marker { display: none; }
.archive-series-index[open] > summary span { transform: rotate(45deg); }
.archive-series-index .archive-series { margin: 0; border-bottom: 0; }
.feature-archive-heading { margin-top: 48px; }
.feature-archive-heading h2 { font-size: 16px; font-weight: 400; }
.feature-list { gap: 48px 28px; }
.feature-card { padding-top: 16px; }
.feature-card h2, .video-card h2, .info-case h3, .project-content-grid h3 { font-weight: 400; font-size: 24px; line-height: 1.45; letter-spacing: -.02em; }
.feature-card-dek { font-size: 15px; }
.feature-card > div > p, .feature-card > div > span, .video-card-meta, .project-content-label { font-size:12px; }
.feature-card-image img, .video-card-image img, .info-case img { transition: transform .35s ease; }
.info-case > a { overflow: hidden; }.info-case > a:hover img { transform: scale(1.015); }
.feature-pagination > div a[aria-current=page] { border-radius: 0; background: var(--csw-field); }
.article-hero { margin-block: 44px 64px; }
.article-hero img { aspect-ratio: auto; max-height: 78svh; object-fit: contain; }
.article-body > p { font-size: 18px; line-height: 1.95; }
.article-body h2 { font-size: clamp(28px, 3.2vw, 44px); font-weight: 400; line-height: 1.35; margin-top: 80px; }
.article-body h3 { font-size: 25px; font-weight: 400; }
.article-body blockquote { font-size: clamp(26px, 3vw, 38px); font-weight: 400; border-top-width: 1px; }
.article-image-pair { gap: 6px; }
.article-toc { padding: 18px 0; border-inline: 0; border-color: var(--csw-line); }
.article-toc summary { font-size: 16px; font-weight: 400; }
.article-toc a { font-size: 15px; }
.article-related-heading h2 { font-weight: 400; font-size: 40px; }
.article-disclosure { font-size: 13px; line-height: 1.85; }
.info-section { grid-template-columns: var(--csw-rail) var(--csw-main); gap: 40px; padding: 28px 0; }
.info-section h2 { font-size: 22px; font-weight: 400; }
.info-section h3 { font-weight: 400; }
.info-section p { font-size: 17px; line-height: 1.9; }
.info-hero { margin-block: 40px 56px; }
.info-services article { padding-top: 18px; }
.info-cases { gap: 32px 28px; }
.info-contact { background: var(--csw-field); margin-top: 48px; }
.info-contact h2 { font-weight: 400; }
.info-series-list h2 { font-weight: 400; }.info-series-list .number { font-size: 12px; padding-top: 8px; color: var(--csw-muted); }
.project-content-grid { gap: 40px 24px; }.picture-post-preview, .picture-post-gallery { gap: 6px; }
.picture-post-number { font-size: 40px; color: var(--csw-muted); }
.picture-post-content h3, .picture-posts-heading h2, .project-collection-heading h2 { font-weight: 400; }
.video-masthead h1 { font-weight: 400; }.video-stage { margin-top: 40px; }
.video-play span { background: var(--csw-paper); color: var(--csw-ink); border-radius: 0; box-shadow: none; font-weight: 400; }
.video-more > h2, .video-description h2 { font-weight: 400; }
.localized-case h3, .case-brief h2 { font-weight: 400; }
.info-main [id] { scroll-margin-top: 116px; }
.missing-page { min-height: 70svh; }
.missing-links { display: flex; flex-wrap: wrap; gap: 20px 32px; margin-top: 40px; padding-left: calc((100% - var(--csw-gap)) / 4 + var(--csw-gap)); }
.missing-links a { min-height: 44px; text-decoration: underline; text-underline-offset: 6px; }
a:focus-visible, summary:focus-visible, button:focus-visible { outline: 2px solid currentColor; outline-offset: 5px; }

@media (min-width: 1051px) {
  .feature-list > .feature-card:first-child { grid-column: span 8; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 24px; }
  .feature-list > .feature-card:first-child .feature-card-image { aspect-ratio: 3/4; }
  .feature-list > .feature-card:first-child h2 { font-size: clamp(26px, 2.8vw, 38px); }
  .feature-list > .feature-card:first-child > div > p { margin-top: 0; }
}
@media (max-width: 1050px) and (min-width: 761px) {
  .feature-header { gap: 24px; }.feature-header nav { gap: 18px; }
  .feature-card { grid-column: span 6; }
  .home-feature-card:not(:first-child) h3 { font-size: 20px; }
  .community-kind { max-width: 130px; }
}
@media (max-width: 760px) {
  :root { --csw-gap: 24px; }
  .feature-header { flex-wrap: wrap; align-items: center; min-height: 76px; padding: 14px 22px; gap: 10px 24px; }
  .feature-header > a { width: 180px; }
  .feature-header nav { width: 100%; justify-content: flex-start; gap: 12px 24px; font-size: 12px; }
  .feature-header nav a { padding: 6px 0; }
  .site-footer, .feature-site-footer { padding: 36px 22px; gap: 16px 24px; }
  .footer-brand { width: 180px; margin-right: calc(100% - 180px); }
  .site-footer .seo-footer-nav { justify-content: flex-start; }
  .section-shell { padding-block: 60px; }
  .content-section .chapter-heading, .community-section .chapter-heading, .work-section .chapter-heading,
  .updates-section .chapter-heading, .partnership-section .chapter-heading { display: block; padding-top: 18px; }
  .chapter-heading .eyebrow { margin: 0 0 24px; }
  .chapter-heading h2, .community-section .chapter-heading h2, .updates-section .chapter-heading h2,
  .partnership-section .chapter-heading h2 { font-size: 38px; max-width: 16ch; }
  .editorial-intro { display: block; margin: 24px 0 32px; }
  .editorial-intro p { font-size: 16px; }
  .editorial-intro .home-content-links, .editorial-intro > .text-link { margin-top: 16px; }
  .work-intro, .partnership-intro { padding-left: 0; font-size: 16px; }
  .home-feature-grid { display: block; margin-bottom: 32px; }
  .home-feature-card:first-child .home-feature-image { aspect-ratio: 4/3; }
  .home-feature-card:first-child h3 { font-size: 28px; }
  .home-feature-card:not(:first-child) { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 20px; padding: 24px 0; }
  .home-feature-card:not(:first-child) .home-feature-image { width: 100%; aspect-ratio: 3/4; margin: 0; }
  .home-feature-card:not(:first-child) h3 { font-size: 19px; }
  .community-section { padding-top: 12px; }
  .community-photo-strip { grid-template-columns: 1fr 1fr; gap: 6px; }
  .community-photo-strip > figure:first-child { grid-column: 1/-1; }
  .community-photo-strip img { height: auto; aspect-ratio: 4/3; }
  .community-photo-strip figcaption { font-size:12px; padding: 8px 0 12px; }
  .community-entry > summary { grid-template-columns: 24px minmax(0, 1fr) 18px; gap: 8px 12px; padding: 22px 0; }
  .community-entry h3 { font-size: 23px; }
  .community-kind { grid-column: 2; grid-row: 2; font-size:12px; }
  .community-entry .case-toggle { grid-column: 3; grid-row: 1/3; }
  .community-entry-body { display: block; }
  .community-entry-body > figure { width: 48%; margin: 12px 0 24px; }
  .community-entry-body p { font-size: 16px; }
  .community-entry-body .tour-stories a { gap: 8px; grid-template-columns: 20px minmax(0, 1fr) 16px; }
  .about-intro { display: flex; flex-direction: column; gap: 28px; padding-block: 48px 32px; }
  .about-intro .chapter-heading h2 { font-size: 38px; max-width: 16ch; }
  .about-intro > figure { width: 54%; margin: 0; align-self: flex-end; }
  .about-platform-details { padding-bottom: 24px; }
  .about-platform-details .flow-list { gap: 24px; }
  .partnership-section > .section-shell:first-child { padding-block: 40px 60px; }
  .partnership-grid > article, .partnership-grid > article:first-child { grid-template-columns: 24px minmax(0, 1fr) 72px; gap: 12px; }
  .partnership-grid h3 { font-size: 21px; }.partnership-grid p { font-size: 15px; }
  .contact-section > .section-shell { display: flex; gap: 32px; }
  .contact-copy h2 { font-size: 44px; max-width: 13ch; }
  .contact-image { width: 54%; margin: 0 0 0 auto; aspect-ratio: 4/3; }
  .contact-section .social-block { display: block; }
  .social-block strong { font-size: 12px; }
  .features-index, .info-main, .article-page { padding-block: 36px 64px; }
  .features-masthead, .info-heading, .article-heading, .article-related-heading { display: block; }
  .features-masthead h1 { font-size: 48px; margin-top: 24px; }
  .features-masthead > p:last-child, .info-dek, .article-dek { font-size: 17px; }
  .info-heading h1, .article-heading h1 { font-size: 34px; line-height: 1.35; }
  .info-heading h1 .heading-brand { font-size: clamp(24px, 7vw, 34px); }
  .article-byline { font-size:12px; }
  .editorial-sections { gap: 20px; margin-top: 28px; }
  .editorial-sections a { font-size: 18px; }
  .archive-series a { display: block; padding: 18px 0; }.archive-series small { margin-top: 8px; }
  .feature-archive-heading { margin-top: 32px; }
  .feature-card h2 { font-size: 20px; }
  .article-hero { margin-block: 32px 40px; }
  .article-hero img { aspect-ratio: auto; max-height: none; }
  .article-disclosure { display: block; }.article-disclosure strong { display: block; margin-bottom: 8px; }
  .article-body > p { font-size: 17px; line-height: 1.9; }
  .article-body h2 { font-size: 30px; margin-top: 64px; }.article-body h3 { font-size: 24px; }
  .article-body blockquote { font-size: 27px; }
  .article-related-heading h2 { font-size: 32px; }
  .info-section { display: block; }.info-section h2 { margin-bottom: 20px; }
  .info-section p { font-size: 16px; }
  .info-hero { margin-block: 32px; }
  .info-series-list h2 { font-size: 24px; }
  .video-card h2, .info-case h3, .project-content-grid h3 { font-size: 23px; }
  .video-more .video-grid { gap: 32px; }
  .article-body h2, .article-body h3, .article-toc { scroll-margin-top: 164px; }
  .info-main [id] { scroll-margin-top: 164px; }
  .missing-links { padding-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .community-entry[open] .community-entry-body { animation: none; }
  .editorial-details > summary > span, .about-platform-details > summary > span,
  .feature-card-image img, .video-card-image img, .info-case img { transition: none; }
  .info-case > a:hover img, .feature-card:hover .feature-card-image img, .video-card-image:hover img { transform: none; }
}

/* A title divider belongs to the following phrase, never the preceding line. */
.title-suffix{display:inline-block;max-width:100%;white-space:normal;word-break:normal;overflow-wrap:anywhere}
.title-divider{white-space:pre;word-break:keep-all;overflow-wrap:normal}

.title-divider-mark{padding-inline:.12em}