/* Editorial roles. Native examples retain their own type, geometry and motion.
   Rationale and verified references: editorial/ui-skills-2026-09-12/report.md */
:root {
  --text-body: 1rem;
  --text-support: .875rem;
  font-synthesis: initial;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.intro-inner { font-size: var(--text-body); line-height: 1.6; letter-spacing: normal; overflow-wrap: break-word; }
.intro-inner > h1, .section-heading, .writing > h2 { font-size: 1rem; line-height: 1.5; text-wrap: balance; }
.lockup-copy { min-width: 0; font-size: .9375rem; line-height: 1.5; letter-spacing: normal; overflow-wrap: break-word; }
.lockup-copy > strong, .writing-title { text-wrap: balance; overflow-wrap: break-word; }
.lockup-copy > p, .writing-description, .section-intro { font-size: var(--text-support); line-height: 1.6; letter-spacing: normal; text-wrap: pretty; overflow-wrap: break-word; }
.writing-title { font-size: 1rem; line-height: 1.5; letter-spacing: normal; }
.writing-list a { flex-wrap: wrap; }
.writing-row-copy { flex: 1 1 12rem; }
.writing-time { font-size: .75rem; line-height: 1.5; }
.site-footer, .essay-end { flex-wrap: wrap; line-height: 1.6; overflow-wrap: break-word; }
.site-footer { font-size: .8125rem; }
.site-footer > *, .essay-end > * { min-width: 0; max-width: 100%; }
.essay-end, .article .back { font-size: .875rem; line-height: 1.5; }
.intro-inner a, .site-footer a, .essay-end a,
.article :is(.prose, .lead, figcaption, .study-reference, .study-reading, .exploration-references) a {
  text-underline-position: from-font;
  text-decoration-thickness: from-font;
  text-decoration-skip-ink: auto;
}

/* Keep exploration canvases and the compact page composition intact. */
.exploration-article > header > h1 { font-size: 1.625rem; line-height: 1.4; text-wrap: balance; overflow-wrap: break-word; }
.exploration-article > header > .lead { font-size: 1.125rem; line-height: 1.6; letter-spacing: normal; text-wrap: wrap; }
.exploration-article > section > .prose,
.exploration-article .observation-copy > p,
.exploration-article .study-reading { font-size: 1rem; line-height: 1.6; letter-spacing: normal; text-wrap: wrap; overflow-wrap: break-word; }
.exploration-article > section > h2 { font-size: 1.3125rem; line-height: 1.4; text-wrap: balance; overflow-wrap: break-word; }
.exploration-article .observation-copy > :is(h2,h3) { font-size: 1.0625rem; line-height: 1.5; text-wrap: balance; overflow-wrap: break-word; }
.exploration-article .article-references > h2 { font-size: 1rem; line-height: 1.5; }
.exploration-article :is(.study-reference,.article-references .study-reference),
.exploration-article figure > figcaption,
.exploration-references ul { font-size: .875rem; line-height: 1.6; letter-spacing: normal; overflow-wrap: break-word; }
.exploration-article figure > figcaption { text-wrap: pretty; }
.study-app-menu .study-menu-item { line-height: 1.5; }
.study-app-menu .study-menu-item > span:not(.study-menu-check) { min-width: 0; overflow-wrap: break-word; }

/* A two-measure reading layout: quiet prose, generous visual evidence. */
.article.reading-page {
  --reading-measure: 640px;
  --reading-title: 2.75rem;
  --reading-section: 1.625rem;
  --reading-lead: 1.3125rem;
  --reading-body: 1.125rem;
  max-width: 968px;
  padding-inline: 24px;
  margin: 48px auto 112px;
}
.reading-page > .back { margin-inline-start: max(0px, calc((100% - var(--reading-measure)) / 2)); }
.reading-page > header,
.reading-page > section > :is(h2,.prose),
.reading-page > :is(.article-references,.essay-end,.article-end) {
  width: 100%;
  max-width: var(--reading-measure);
  margin-inline: auto;
}
.reading-page > header { margin-top: 56px; }
.reading-page > header .article-lockup { flex-direction: column; align-items: flex-start; gap: 20px; }
.reading-page > header .article-lockup > div { min-width: 0; width: 100%; }
.reading-page > header > h1,
.reading-page > header .article-lockup h1 {
  margin: 0;
  font-size: var(--reading-title);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -.035em;
  text-wrap: balance;
  overflow-wrap: break-word;
}
.reading-page > header > .essay-kicker { font-size: .875rem; line-height: 1.5; margin-bottom: 12px; letter-spacing: normal; }
.reading-page > header > :is(.case-study-meta,.essay-byline) {
  font-size: .875rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: normal;
  text-wrap: wrap;
  overflow-wrap: break-word;
  margin-top: 20px;
}
.reading-page > header > .case-study-meta + .case-study-meta { margin-top: 8px; }
.reading-page > header > .lead,
.reading-page .case-summary > .lead {
  margin-top: 32px;
  font-size: var(--reading-lead);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: normal;
  text-wrap: wrap;
  overflow-wrap: break-word;
}
.reading-page .case-opening { margin-top: 32px; }
.reading-page > section,
.reading-page > section:first-of-type { margin-top: 64px; }
.reading-page > section > h2 {
  margin-bottom: 16px;
  font-size: var(--reading-section);
  font-weight: 550;
  line-height: 1.4;
  letter-spacing: -.02em;
  text-wrap: balance;
  overflow-wrap: break-word;
}
.reading-page > section > .prose,
.reading-page .case-opening > .prose {
  font-size: var(--reading-body);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: normal;
  text-wrap: wrap;
  overflow-wrap: break-word;
}
.reading-page .prose:empty { display: none; }
.reading-page .prose > p + p { margin-top: 1.35em; }
.reading-page .prose > h3 { font-size: 1.25rem; line-height: 1.4; font-weight: 550; letter-spacing: normal; text-wrap: balance; margin: 36px 0 12px; }
.reading-page .prose > h3:first-child { margin-top: 0; }
.reading-page .case-quote { margin: 32px 0; padding-inline-start: 24px; border-inline-start: 2px solid var(--line); }
.reading-page .case-quote > p { font-size: var(--reading-body); font-weight: 400; line-height: 1.6; letter-spacing: normal; text-wrap: wrap; overflow-wrap: break-word; }
.reading-page .case-quote-attribution { margin-top: 16px; font-size: .875rem; line-height: 1.6; }
.reading-page .case-code { max-width: 100%; margin: 28px 0; padding: 20px; font-size: .8125rem; line-height: 1.6; letter-spacing: normal; white-space: pre-wrap; overflow-wrap: break-word; }
.reading-page :is(.case-evidence,.interactive-figure,.essay-image,.article-figure) {
  width: 100%;
  max-width: 920px;
  margin: 40px auto;
}
.reading-page .live-journey-figure {
  width: min(940px, calc(100vw - 48px)) !important;
  max-width: 940px;
  left: 50%;
  transform: translateX(-50%);
  margin: 40px 0 !important;
}
/* These live canvases calculate native fitting from their container. Keep the
   original width independent of the new text and static-evidence measures. */
.reading-page .interactive-figure {
  width: min(662px, calc(100vw - 24px));
  max-width: none;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  margin-inline: 0;
}
.reading-page :is(.case-evidence,.interactive-figure,.essay-image,.article-figure) > figcaption {
  width: 100%;
  max-width: var(--reading-measure);
  padding-inline: 0;
  margin: 16px auto 0;
  font-size: .875rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: normal;
  text-wrap: pretty;
  overflow-wrap: break-word;
}
.reading-page > .article-references { margin-top: 56px; }
.reading-page > .article-references > h2 { font-size: 1.125rem; font-weight: 550; line-height: 1.4; }
.reading-page > .article-references .study-reference { font-size: .875rem; line-height: 1.6; overflow-wrap: break-word; }
.reading-page > :is(.essay-end,.article-end) { margin-top: 64px; }
/* Cases pair the story with project context; essays retain one reading sequence. */
.case-study.reading-page > .back { margin-inline-start: 0; }
.case-study.reading-page > .case-masthead { max-width: none; display: grid; grid-template-columns: minmax(0, 640px) minmax(0, 232px); gap: 48px; align-items: start; }
.case-summary { min-width: 0; }
.case-facts { min-width: 0; margin: 68px 0 0; display: grid; gap: 24px; }
.case-facts > div { min-width: 0; }
.case-facts dt { font-size: .8125rem; line-height: 1.5; color: var(--muted); margin-bottom: 6px; }
.case-facts dd { margin: 0; font-size: .875rem; line-height: 1.6; color: var(--ink); overflow-wrap: break-word; }
.reading-page .case-action { margin-top: 24px; font-size: .875rem; line-height: 1.5; }
.case-action a { display: inline-block; min-height: 44px; padding-block: 11px; color: var(--link); text-decoration: underline; text-underline-offset: 3px; }
.case-study.reading-page > section > :is(h2,.prose),
.case-study.reading-page > :is(.article-references,.article-end),
.case-study.reading-page :is(.case-evidence,.article-figure) > figcaption { margin-inline: 0; }
.case-study.reading-page .live-journey-figure > figcaption { margin-inline: max(0px, calc((100% - 920px) / 2)); }
.reading-page.essay > header > .essay-byline { margin-top: 24px; }
.reading-page.essay > header > .lead { margin-top: 24px; }
.reading-page.essay > header + .interactive-figure { margin-top: 32px; }
@container reading (max-width: 54rem) {
  .case-study.reading-page > .case-masthead { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .case-facts { margin-top: 0; grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr)); gap: 24px 32px; }
}
/* Container width is font-relative so enlarged type collapses the context rail. */
body:has(.reading-page) { container: reading / inline-size; }
@media (max-width: 58rem) {
  .case-study.reading-page > .case-masthead { grid-template-columns: minmax(0,1fr); max-width: var(--reading-measure); gap: 32px; }
  .case-study.reading-page > .back { margin-inline-start: max(0px, calc((100% - var(--reading-measure)) / 2)); }
  .case-facts { margin-top: 0; grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr)); gap: 24px 32px; }
  .case-study.reading-page > section > :is(h2,.prose), .case-study.reading-page > .article-end,
  .case-study.reading-page :is(.case-evidence,.article-figure) > figcaption { margin-inline: auto; }
}

@media (max-width: 767px) {
  .lockup-copy { font-size: .875rem; }
  .exploration-article > header > h1 { font-size: 1.5rem; }
  .exploration-article > header > .lead { font-size: 1.0625rem; }
  .article.reading-page {
    --reading-title: 2rem;
    --reading-section: 1.5rem;
    --reading-lead: 1.1875rem;
    --reading-body: 1.0625rem;
    padding-inline: 24px;
    margin-block: 24px 72px;
  }
  .reading-page > header { margin-top: 36px; }
  .reading-page > header > h1, .reading-page > header .article-lockup h1 { letter-spacing: -.025em; }
  .reading-page > header .article-lockup { gap: 16px; }
  .reading-page > header > .lead,
.reading-page .case-summary > .lead { margin-top: 24px; }
  .reading-page > section, .reading-page > section:first-of-type { margin-top: 48px; }
  .reading-page :is(.case-evidence,.interactive-figure,.essay-image,.article-figure) { margin-block: 32px; }
  .reading-page .live-journey-figure { width: calc(100vw - 24px) !important; margin-block: 32px !important; }
  .reading-page :is(.live-journey-figure,.interactive-figure) > figcaption { width: calc(100% - 24px); }
  .case-study.reading-page .live-journey-figure > figcaption { width: min(640px, calc(100cqw - 48px)); margin-inline: auto; }
}