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/* Short editorial paths, followed by a searchable catalogue. */
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/* Discoverable pages and a quiet invitation to keep reading. */
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.letter-shell { max-width: 1550px; padding-top: 70px; padding-bottom: 90px; }
.letter-heading { display: grid; grid-template-columns: 1.2fr .8fr; gap: 8%; align-items: center; }
.letter-heading h1 { font-size: clamp(42px, 5.2vw, 76px); margin: 24px 0; line-height: 1.05; }
.letter-lead { font-size: 1.125rem; line-height: 1.75; color: var(--muted); max-width: 565px; }
.letter-heading-actions { margin-top: 28px; }
.button-signal { background: var(--signal); color: var(--carbon); border-color: var(--signal); font-weight: 600; }
.button-signal:hover { background: #ff795f; border-color: #ff795f; color: var(--carbon); }
.letter-availability { font-size: .8125rem; color: var(--muted); margin-top: 18px; max-width: 460px; }
.letter-preview { padding: 30px 34px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; background: linear-gradient(135deg, #17202a99, transparent 70%); }
.letter-preview:before { content: ''; position: absolute; top: 0; left: 16px; right: -16px; height: 2px; background: var(--signal); }
.letter-edition { display: block; font-size: clamp(110px, 12vw, 180px); letter-spacing: -.075em; line-height: 1; color: #a7b7c45c; margin-bottom: 25px; }
.letter-preview > p:not(.eyebrow) { font-size: clamp(19px, 2vw, 25px); line-height: 1.65; letter-spacing: -.025em; margin-top: 16px; }
.letter-preview-bottom { display: flex; justify-content: space-between; align-items: end; gap: 25px; border-top: 1px solid var(--line); margin-top: 30px; padding-top: 20px; }
.letter-preview-bottom > span { font-size: .75rem; color: var(--muted); line-height: 1.6; }
.letter-format { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 25px; border-block: 1px solid var(--line); padding-block: 25px; margin: 60px 0 80px; }
.letter-format p { font-size: .875rem; }
.letter-format span { display: block; color: var(--muted); font-size: .75rem; margin-bottom: 8px; }
.letter-pilot { max-width: 850px; margin-inline: auto; scroll-margin-top: 35px; }
.letter-pilot-label { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-bottom: 25px; border-bottom: 1px solid var(--line); }
.letter-pilot-label > span:first-child { color: #ff795f; }
.letter-pilot h2 { font-size: clamp(35px, 4vw, 53px); margin: 30px 0 20px; line-height: 1.1; }
.letter-deck { font-size: 1.1875rem; color: var(--muted); margin-bottom: 35px; max-width: 650px; }
.letter-copy { max-width: 730px; }
.letter-copy > p { font-size: 1.125rem; line-height: 1.85; color: #d4dbe3; margin-bottom: 24px; }
.letter-copy h3 { font-size: 28px; line-height: 1.25; margin: 34px 0 20px; }
.letter-copy .letter-remember { border-left: 2px solid var(--signal); padding-left: 24px; margin: 35px 0; color: var(--white); }
.letter-remember .eyebrow { display: block; margin-bottom: 12px; }
.letter-copy .letter-source { font-size: .75rem; color: var(--muted); margin-top: 28px; }
.letter-source a { text-decoration: underline; text-underline-offset: 3px; }
.letter-after { border-top: 1px solid var(--line); margin-top: 65px; padding-top: 35px; }
.letter-after h2 { font-size: clamp(28px, 3vw, 40px); margin: 20px 0; }
.letter-after p:not(.eyebrow) { color: var(--muted); margin-bottom: 18px; }
.info-page { max-width: 950px; padding-block: 60px 90px; }
.info-page h1 { font-size: clamp(37px, 5vw, 62px); line-height: 1.08; margin: 25px 0; }
.info-page h2 { font-size: 29px; margin: 42px 0 20px; }
.info-page p:not(.eyebrow) { color: #c3ced9; line-height: 1.8; margin-bottom: 22px; }
.info-page .text-link { margin-top: 20px; }
.share-dialog > p { color: var(--muted); font-size: .9375rem; }
.share-dialog label { display: block; font-size: .875rem; margin-top: 25px; }
.share-dialog input { display: block; width: 100%; padding: 15px; margin: 10px 0 18px; color: var(--white); background: var(--carbon); border: 1px solid #667787; font-size: 1rem; border-radius: 0; }
#share-feedback { font-size: .875rem; margin-top: 18px; }
@media(max-width:1100px) { .site-header nav { gap: 20px; } .letter-heading { gap: 5%; } .letter-preview { padding: 25px; } }
@media(max-width:760px) {
  .article-actions { align-items: start; gap: 5px; margin-top: 14px; }
  .article-actions > a { width: 100%; }
  .letter-shell { padding-top: 36px; padding-bottom: 55px; }
  .letter-heading { grid-template-columns: 1fr; gap: 38px; }
  .letter-heading h1 { font-size: clamp(39px, 10vw, 60px); margin: 18px 0 22px; }
  .letter-lead { font-size: 1rem; }
  .letter-preview { padding: 24px; margin-right: 16px; }
  .letter-edition { font-size: 96px; }
  .letter-preview > p:not(.eyebrow) { font-size: 21px; }
  .letter-format { grid-template-columns: 1fr; gap: 20px; margin: 38px 0 45px; }
  .letter-format span { margin-bottom: 3px; }
  .letter-pilot h2 { font-size: clamp(32px, 8.2vw, 45px); }
  .letter-pilot h2 br, .letter-after h2 br { display: none; }
  .letter-copy > p { font-size: 1.0625rem; }
  .letter-invitation { flex-direction: column; align-items: start; gap: 24px; margin-top: 40px; padding-block: 28px; }
  #home-view > .letter-invitation { margin-bottom: 40px; }
  .letter-pilot-label .eyebrow { font-size: .6875rem; }
  .letter-invitation .button, .letter-heading-actions .button { max-width: 100%; }
  .letter-copy h3 { font-size: 26px; }
  .info-page { padding-top: 35px; }
}

/* Read directly: one catalogue, six clearly separated themes. */
.reveal-button { width: fit-content; }
.hero-article { display: flex; flex-direction: column; gap: 9px; max-width: 520px; padding-block: 8px; }
.hero-article > span:last-child { font-size: 1.0625rem; line-height: 1.4; }
.hero-article > span:last-child > span { color: var(--signal); margin-left: 12px; }
.hero-article:hover > span:last-child { text-decoration: underline; text-underline-offset: 5px; }
.explorations { padding-block: 64px 70px; scroll-margin-top: 24px; }
.explorations .section-heading { align-items: center; margin-bottom: 30px; }
.explorations .section-heading h2 { font-size: clamp(36px, 4vw, 52px); }
.explorations .section-heading p { font-size: 1rem; color: var(--muted); margin-top: 14px; }
.catalogue-search { display: block; flex: 0 1 310px; }
.catalogue-search > span { display: block; font-size: .75rem; color: var(--muted); margin-bottom: 8px; }
.catalogue-search input { width: 100%; min-height: 48px; padding: 12px 15px; background: var(--surface); color: var(--white); border: 1px solid #52606d; border-radius: 0; }
.catalogue-search input::placeholder { color: var(--muted); }
.catalogue-themes { display: flex; flex-wrap: wrap; gap: 6px 12px; border-bottom: 1px solid var(--line); padding-block: 10px 14px; position: sticky; top: 0; z-index: 4; background: var(--carbon); }
.catalogue-themes a { display: inline-flex; align-items: center; min-height: 44px; padding: 10px 18px; font-size: .9375rem; border: 1px solid transparent; color: #bcc6d1; }
.catalogue-themes a:hover { border-color: var(--line); color: var(--white); }
.catalogue-themes a[aria-current] { background: var(--white); color: var(--carbon); border-color: var(--white); }
.catalogue-summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 70px; padding-block: 12px; color: var(--muted); font-size: .8125rem; }
.catalogue-summary .text-link { font-size: .8125rem; flex-shrink: 0; }
.territories { display: grid; grid-template-columns: 1fr; gap: 52px; }
.territory { display: grid; grid-template-columns: minmax(210px, .75fr) minmax(0, 2fr); gap: clamp(30px, 5vw, 80px); border-bottom: 1px solid var(--line); padding-bottom: 44px; scroll-margin-top: 150px; }
.territory:last-child { border-bottom: 0; padding-bottom: 0; }
.territory-art { aspect-ratio: 1.4; }
.territory-art:after { display: none; }
.territory-art:hover > img { transform: none; }
.terrain-label { position: static; margin-top: 20px; }
.terrain-label h3 { font-size: clamp(27px, 2.4vw, 36px); line-height: 1.15; }
.terrain-label h3:focus { outline: none; }
.terrain-label p { margin-top: 8px; font-size: .8125rem; color: var(--muted); }
.theme-articles { min-width: 0; }
.topic-row { padding: 0; }
.topic-row:last-child { border-bottom: 0; }
.topic-link { align-items: center; padding: 24px 0; gap: 26px; }
.topic-row:first-child .topic-link { padding-top: 0; }
.topic-row:last-child .topic-link { padding-bottom: 0; }
.topic-link h4 { font-size: clamp(21px, 2.1vw, 28px); line-height: 1.2; font-weight: 600; letter-spacing: -.03em; }
.topic-link p { font-size: .9375rem; line-height: 1.6; color: #aebcca; margin-top: 10px; max-width: 680px; }
.topic-link small { margin-top: 12px; color: #8f9eac; line-height: 1.6; }
.topic-arrow { margin-left: auto; font-size: 24px; color: var(--signal); }
.topic-link:hover h4 { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.topic-link:focus-visible { outline-offset: 7px; }
.magazine-article .lesson-heading h1, .topic-link h4 { text-wrap: balance; }
.lesson-category { display: inline-flex; align-items: center; min-height: 44px; font-size: .875rem; color: var(--muted); text-align: right; }
.lesson-category:hover { text-decoration: underline; text-underline-offset: 4px; }
.publication-dates { color: var(--muted); font-size: .75rem; line-height: 1.7; margin-top: 10px; }
.publication-dates span { margin-inline: 5px; }

/* Give the reading more space than its metadata. */
.article-byline { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 22px; margin-top: 20px; color: var(--muted); font-size: .8125rem; }
.article-byline > a { padding-block: 8px; }
.article-byline > a:hover { text-decoration: underline; text-underline-offset: 4px; }
.article-byline .publication-dates { margin: 0; font-size: .75rem; }
.update-note { color: var(--muted); font-size: .75rem; line-height: 1.6; margin: 4px 0 0; max-width: 62ch; }
.magazine-article .article-actions { margin-top: 4px; max-width: none; justify-content: flex-start; gap: 10px 28px; }
.article-tools { display: flex; gap: 20px; align-items: center; }
.article-tools .save-button, .article-tools .text-link { min-height: 44px; font-size: .875rem; }
.magazine-article .magazine-layout { margin-top: 24px; }
.latest-readings { padding-block: 42px 8px; }
.selection-label { color: var(--signal); margin-bottom: 14px; }
.selection-intro { max-width: 680px; margin: -8px 0 24px; color: var(--muted); font-size: 1rem; line-height: 1.65; }
.source-list .source-purpose { margin-top: 5px; line-height: 1.5; color: var(--muted); }
.latest-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 24px; }
.latest-heading h2 { font-size: clamp(24px, 2.6vw, 34px); letter-spacing: -.035em; }
.latest-heading .text-link { font-size: .875rem; flex-shrink: 0; }
.latest-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.latest-grid article { padding: 24px 28px 26px; border-right: 1px solid var(--line); }
.latest-grid article:first-child { padding-left: 0; }
.latest-grid article:last-child { border-right: 0; padding-right: 0; }
.latest-grid .eyebrow { color: var(--muted); font-size: .75rem; margin-bottom: 14px; }
.latest-link { display: block; }
.latest-link h3 { font-size: clamp(22px, 2.2vw, 28px); line-height: 1.25; letter-spacing: -.035em; }
.latest-link h3 span { color: var(--signal); white-space: nowrap; }
.latest-link p { margin-top: 12px; font-size: .9375rem; color: var(--muted); line-height: 1.65; }
.latest-link:hover h3 { text-decoration: underline; text-underline-offset: 4px; }
.story-lab { margin-block: 38px; padding: 28px; border: 1px solid #38515d; border-top: 2px solid #90d9de; background: #0e1b23; }
.story-lab > .eyebrow { color: #90d9de; font-size: .75rem; line-height: 1.6; }
.story-lab h3 { font-size: clamp(26px, 2.5vw, 34px); line-height: 1.2; letter-spacing: -.035em; margin-top: 14px; }
.feature-intro { color: #c2d0d9; line-height: 1.7; margin-top: 14px; }
.feature-choices { display: flex; gap: 8px; flex-wrap: wrap; margin-block: 24px; }
.feature-choices button { font-size: .875rem; min-height: 44px; padding: 11px 15px; border: 1px solid #536977; text-align: left; }
.feature-choices button[aria-pressed=true] { color: #0a141b; background: #b2e0e2; border-color: #b2e0e2; }
.stellar-label { font-size: .875rem; margin-block: 20px; color: #90d9de; }
.stellar-timeline { list-style: none; padding: 0; margin: 0; }
.stellar-timeline li { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 18px; padding-bottom: 23px; position: relative; }
.stellar-timeline li:not(:last-child)::before { content: ''; position: absolute; width: 1px; left: 17px; top: 36px; bottom: 0; background: #466774; }
.stellar-step { display: grid; place-items: center; height: 36px; border: 1px solid #607e8a; font-size: .8125rem; color: #90d9de; }
.stellar-timeline h4 { font-size: 1.125rem; line-height: 1.5; font-weight: 600; }
.stellar-timeline p { font-size: .9375rem; color: #bdcbd5; line-height: 1.7; margin-top: 5px; }
.feature-note { font-size: .8125rem; color: #aebfcb; line-height: 1.7; margin-top: 18px; }
.feature-note a { text-decoration: underline; text-underline-offset: 4px; }
.transit-drawing { margin-block: 20px; }
.transit-drawing svg { width: 100%; height: auto; display: block; }
.feature-slider { display: flex; justify-content: space-between; gap: 12px; font-size: .875rem; }
.feature-slider output { color: #90d9de; }
.transit-story input[type=range] { display: block; width: 100%; height: 44px; accent-color: #90d9de; cursor: pointer; }
.feature-result { line-height: 1.7; border-left: 2px solid var(--signal); padding-left: 16px; font-size: 1rem; }
@media (max-width: 760px) {
  .story-lab { padding: 22px 17px; margin-inline: -8px; }
  .feature-choices { gap: 8px; margin-block: 18px; }
  .feature-choices button { padding: 10px 12px; }
  .stellar-timeline li { gap: 12px; }
  .feature-slider { flex-direction: column; gap: 5px; }
  .transit-drawing { margin-inline: -12px; }
  .magazine-article .lesson-topbar { margin-bottom: 14px; }
  .magazine-article .lesson-heading h1 { margin: 12px 0 14px; font-size: clamp(31px, 8.2vw, 42px); line-height: 1.1; }
  .magazine-article .lesson-lead { line-height: 1.65; }
  .article-byline { display: block; margin-top: 14px; }
  .article-byline > a { display: inline-block; padding-block: 3px; }
  .article-byline .publication-dates { margin-top: 2px; }
  .magazine-article .article-actions { margin-top: 8px; gap: 0 16px; }
  .magazine-article .article-actions .status-label { font-size: .75rem; }
  .article-tools { gap: 18px; }
  .magazine-article .magazine-layout { margin-top: 14px; }
  .latest-readings { padding-block: 30px 0; }
  .latest-heading { display: block; margin-bottom: 16px; }
  .latest-heading .text-link { margin-top: 12px; }
  .latest-grid { grid-template-columns: 1fr; }
  .latest-grid article, .latest-grid article:first-child, .latest-grid article:last-child { padding: 20px 0; border-right: 0; }
  .latest-grid article + article { border-top: 1px solid var(--line); }
  .latest-grid .eyebrow { margin-bottom: 8px; }
  .latest-link h3 { font-size: 24px; }
  .latest-link p { margin-top: 8px; }
}
.rubric-link { display: inline-block; }
.rubric-link span { color: var(--signal); font-size: .65em; vertical-align: middle; }
.rubric-link:hover { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.rubric-page { max-width: 1250px; }
.rubric-heading { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px 70px; margin-block: 32px 52px; align-items: start; }
.rubric-title { grid-area: 1 / 1; }
.rubric-title h1 { font-size: clamp(38px, 5.2vw, 66px); line-height: 1.05; margin-top: 16px; text-wrap: balance; }
.rubric-intro { grid-area: 2 / 1; color: #bdc8d3; line-height: 1.8; font-size: 1rem; max-width: 690px; }
.rubric-intro p + p { margin-top: 16px; }
.rubric-context { max-width: 760px; margin-top: 38px; color: #bdc8d3; font-size: .9375rem; line-height: 1.8; }
.rubric-art { grid-area: 1 / 2 / 3; margin: 0; }
.rubric-art img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; }
.rubric-art figcaption { font-size: .6875rem; color: var(--muted); margin-top: 8px; }
.rubric-readings { border-top: 1px solid var(--line); padding-top: 30px; }
.rubric-readings h2, .rubric-navigation h2 { font-size: 1rem; font-weight: 400; color: var(--muted); margin-bottom: 30px; letter-spacing: 0; }
.rubric-readings .topic-link h3 { font-size: clamp(23px, 2.4vw, 30px); line-height: 1.2; letter-spacing: -.03em; text-wrap: balance; }
.rubric-readings .topic-link:hover h3 { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.rubric-readings .topic-link { padding-block: 28px; }
.rubric-navigation { margin-top: 62px; }
.rubric-navigation h2 { margin-bottom: 14px; }
.rubric-navigation .catalogue-themes { position: static; border-top: 1px solid var(--line); }
@media (max-width: 760px) {
  .rubric-heading { grid-template-columns: minmax(0, 1fr) 86px; gap: 24px 16px; margin-block: 26px 36px; }
  .rubric-art { grid-area: 1 / 2; }
  .rubric-art figcaption { font-size: .625rem; line-height: 1.5; }
  .rubric-title h1 { font-size: clamp(30px, 8vw, 42px); overflow-wrap: anywhere; }
  .rubric-intro { grid-area: 2 / 1 / 3 / 3; font-size: .9375rem; line-height: 1.75; }
  .rubric-readings .topic-link h3 { font-size: 23px; }
  .rubric-readings .topic-link { padding-block: 24px; }
}
@media (max-width: 1000px) {
  .catalogue-themes { gap: 6px; }
  .catalogue-themes a { padding-inline: 14px; font-size: .875rem; }
  .territory { grid-template-columns: 220px minmax(0, 1fr); gap: 32px; }
}
@media (max-width: 760px) {
  .scene-intro { width: calc(100% - var(--gutter) * 2); }
  .scene-intro > p:not(.eyebrow) { max-width: 340px; }
  .scene-bottom { align-items: start; flex-direction: column; gap: 16px; bottom: 24px; }
  .hero-article { gap: 6px; max-width: 330px; }
  .hero-article > span:last-child { font-size: 1rem; }
  .art-disclosure { text-align: left; }
  .art-disclosure br { display: none; }
  .explorations { padding-block: 42px 45px; scroll-margin-top: 16px; }
  .explorations .section-heading { align-items: stretch; flex-direction: column; gap: 24px; margin-bottom: 20px; }
  .explorations .section-heading p { font-size: .9375rem; max-width: 290px; }
  .catalogue-search { flex: auto; width: 100%; }
  .catalogue-themes { gap: 5px; padding-block: 9px; }
  .catalogue-themes a { padding: 9px 12px; font-size: .8125rem; }
  .catalogue-summary { min-height: 62px; gap: 10px; }
  .territories { gap: 34px; }
  .territory { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-bottom: 32px; }
  .territory-heading { display: flex; align-items: center; gap: 20px; }
  .territory-art { width: 100px; aspect-ratio: 1; flex-shrink: 0; }
  .terrain-label { margin-top: 0; }
  .terrain-label h3 { font-size: 27px; }
  .terrain-label p { margin-top: 7px; }
  .topic-link { padding-block: 22px; gap: 18px; }
  .topic-link h4 { font-size: 23px; }
  .topic-link p { font-size: .875rem; margin-top: 9px; }
  .topic-arrow { font-size: 21px; }
  .lesson-topbar { margin-bottom: 26px; align-items: start; }
  .lesson-category { max-width: 145px; justify-content: end; font-size: .8125rem; line-height: 1.4; }
}
@media (max-width: 380px) {
  .catalogue-themes a { padding-inline: 10px; font-size: .75rem; }
  .territory-art { width: 82px; }
  .territory-heading { gap: 16px; }
  .terrain-label h3 { font-size: 25px; }
  .topic-link h4 { font-size: 21px; }
  .scene-bottom { gap: 10px; }
  .lesson-category { max-width: 120px; }
}

/* Editorial contact: part of the reading, not a new navigation step. */
.editor-note { border-left: 2px solid var(--signal); padding: 4px 0 10px 24px; margin-block: 34px; }
.editor-note h2 { margin-top: 16px; }
.contact-address, .info-page p a { text-decoration: underline; text-underline-offset: 4px; overflow-wrap: anywhere; }
.correction-link { display: inline-block; margin-top: 14px; padding-block: 12px; font-size: .875rem; text-decoration: underline; text-underline-offset: 4px; color: #c5dce1; }
.measurement-choice { margin-block: 24px; }
.measurement-choice .button { white-space: normal; text-align: left; line-height: 1.5; }
.measurement-choice p { font-size: .875rem; color: var(--muted); }

@media (max-width:760px) { .transit-drawing svg text { font-size: 24px; } }