:root {
  --color-primary: #8b3445;
  --color-primary-dark: #632536;
  --color-accent: #d59a3a;
  --color-accent-soft: #f0d8a8;
  --color-paper: #f7f1e7;
  --color-surface: #fffdf9;
  --color-ink: #27201d;
  --color-muted: #6e625c;
  --color-border: #ded3c6;
  --color-sage: #667a68;
  --color-dark-bg: #171817;
  --color-dark-surface: #222321;
  --color-dark-text: #f3ece1;
  --radius-sm: .55rem;
  --radius-md: .9rem;
  --radius-lg: 1.35rem;
  --shadow-soft: 0 12px 34px rgba(71, 42, 34, .08);
  --content: 1440px;
  --reader-width: 760px;
  --focus: 0 0 0 3px rgba(213, 154, 58, .58);
  color-scheme: light;
}

html[data-theme="sepia"] {
  --color-paper: #efe4cf;
  --color-surface: #f8efdf;
  --color-border: #d1c1a6;
  --color-ink: #332923;
}

html[data-theme="dark"] {
  --color-paper: #171817;
  --color-surface: #222321;
  --color-ink: #f3ece1;
  --color-muted: #c2b7ab;
  --color-border: #4b4540;
  --color-accent-soft: #614d2f;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--color-paper); color: var(--color-ink); font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body.modal-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
.sr-only { position: absolute !important; overflow: hidden; width: 1px; height: 1px; padding: 0; border: 0; margin: -1px; clip: rect(0, 0, 0, 0); white-space: nowrap; }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
button, input, select, textarea { font: inherit; }
button, .button { min-height: 44px; }
:focus-visible { outline: 0; box-shadow: var(--focus); border-radius: var(--radius-sm); }
.skip-link { position: fixed; z-index: 1000; top: .5rem; left: .5rem; padding: .65rem 1rem; background: var(--color-ink); color: var(--color-surface); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.container { width: min(calc(100% - 2rem), var(--content)); margin-inline: auto; }
.narrow { width: min(calc(100% - 2rem), 820px); margin-inline: auto; }
.eyebrow { margin: 0 0 .55rem; color: var(--color-primary); font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.muted { color: var(--color-muted); }
.serif, h1, h2, h3, .book-title { font-family: Georgia, "Times New Roman", serif; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; padding: .65rem 1rem; border: 1px solid transparent; border-radius: var(--radius-sm); background: var(--color-primary); color: #fff; font-weight: 750; text-decoration: none; cursor: pointer; }
.button:hover { background: var(--color-primary-dark); }
.button.secondary { background: transparent; border-color: var(--color-border); color: var(--color-ink); }
.button.secondary:hover { border-color: var(--color-primary); background: color-mix(in srgb, var(--color-primary) 7%, transparent); }
.button.ghost { background: transparent; color: var(--color-primary); padding-inline: .25rem; }
.button[disabled] { opacity: .55; cursor: not-allowed; }
.icon-button { display: inline-grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--color-border); border-radius: 50%; background: var(--color-surface); color: var(--color-ink); cursor: pointer; }
.icon-button:hover { border-color: var(--color-primary); }

.site-header { position: sticky; z-index: 100; top: 0; border-bottom: 1px solid var(--color-border); background: color-mix(in srgb, var(--color-surface) 94%, transparent); backdrop-filter: blur(14px); transition: transform .25s ease; }
.site-header.is-hidden { transform: translateY(-110%); }
.header-row { display: flex; align-items: center; min-height: 70px; gap: 1rem; }
.brand { flex: 0 0 auto; }
.brand img { width: 150px; height: auto; }
.desktop-nav { display: flex; align-items: center; gap: clamp(.55rem, 1.25vw, 1.25rem); margin-left: auto; }
.desktop-nav a { font-size: .91rem; font-weight: 650; text-decoration: none; white-space: nowrap; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: var(--color-primary); }
.header-actions { display: flex; gap: .45rem; }
.mobile-menu-button { display: none; }
.header-search { display: none; padding: .65rem 0 1rem; border-top: 1px solid var(--color-border); }
.header-search.is-open { display: block; }
.search-box { display: grid; grid-template-columns: 1fr auto; gap: .6rem; width: min(100%, 820px); margin-inline: auto; }
.search-box input, .filter-control, textarea { width: 100%; min-height: 46px; padding: .7rem .85rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-ink); }
.mobile-nav { position: fixed; z-index: 200; inset: 0 0 0 auto; display: flex; width: min(88vw, 360px); flex-direction: column; gap: .2rem; padding: 5rem 1rem 2rem; background: var(--color-surface); box-shadow: -20px 0 50px rgba(0, 0, 0, .22); transform: translateX(110%); transition: transform .25s; }
.mobile-nav.is-open { transform: none; }
.mobile-nav a { padding: .8rem; border-bottom: 1px solid var(--color-border); font-weight: 700; text-decoration: none; }
.nav-backdrop { position: fixed; z-index: 190; inset: 0; display: none; background: rgba(0, 0, 0, .4); }
.nav-backdrop.is-open { display: block; }

main { min-height: 65vh; }
.hero { padding: clamp(2rem, 6vw, 5rem) 0 3rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(480px, 1.35fr); overflow: hidden; min-height: 530px; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-soft); }
.hero-copy { z-index: 1; display: flex; flex-direction: column; justify-content: center; padding: clamp(2rem, 5vw, 5rem); }
.hero h1 { max-width: 12ch; margin: 0; font-size: clamp(2.7rem, 6vw, 5.6rem); line-height: .98; letter-spacing: -.045em; }
.hero p { max-width: 56ch; margin: 1.4rem 0 1.8rem; color: var(--color-muted); font-size: clamp(1rem, 1.5vw, 1.2rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; }
.hero-art { min-height: 420px; background: var(--color-accent-soft); }
.hero-art img { width: 100%; height: 100%; object-fit: cover; }
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.stat-strip div { padding: 1.15rem 1.4rem; border-right: 1px solid var(--color-border); }
.stat-strip div:last-child { border-right: 0; }
.stat-strip strong { display: block; color: var(--color-primary); font-family: Georgia, serif; font-size: 1.7rem; }

.section { padding: clamp(2.2rem, 5vw, 4.5rem) 0; }
.section.alt { border-block: 1px solid var(--color-border); background: color-mix(in srgb, var(--color-surface) 66%, transparent); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.3rem; }
.section-heading h2 { margin: 0; font-size: clamp(1.75rem, 3vw, 2.7rem); line-height: 1.1; }
.section-heading p { max-width: 62ch; margin: .4rem 0 0; color: var(--color-muted); }
.horizontal-shelf { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(178px, 1fr); grid-template-rows: 1fr; gap: 1rem; overflow-x: auto; padding: .25rem .1rem 1rem; scrollbar-width: thin; scroll-snap-type: x proximity; }
.horizontal-shelf.two-rows { grid-template-rows: repeat(2, 1fr); }
.horizontal-shelf > * { scroll-snap-align: start; }

.book-card { position: relative; display: flex; min-width: 0; flex-direction: column; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); transition: border-color .2s, background .2s; }
.book-card:hover { border-color: color-mix(in srgb, var(--color-primary) 62%, var(--color-border)); }
.cover-link { position: relative; display: block; overflow: hidden; aspect-ratio: 3/4; background: var(--color-accent-soft); }
.cover-link img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.book-card:hover .cover-link img { transform: scale(1.025); }
.book-badge { position: absolute; top: .55rem; left: .55rem; padding: .25rem .5rem; border-radius: 999px; background: rgba(39, 32, 29, .83); color: #fff; font-size: .69rem; font-weight: 750; }
.book-card-body { display: flex; flex: 1; flex-direction: column; padding: .85rem; }
.book-title { display: -webkit-box; overflow: hidden; margin: 0; font-size: 1.05rem; line-height: 1.25; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.book-title a { text-decoration: none; }
.book-author { display: -webkit-box; overflow: hidden; margin: .35rem 0; color: var(--color-muted); font-size: .85rem; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.book-meta { display: flex; flex-wrap: wrap; gap: .25rem .5rem; margin: .25rem 0 .75rem; color: var(--color-muted); font-size: .74rem; }
.book-card-actions { display: grid; grid-template-columns: 1fr auto; gap: .45rem; margin-top: auto; }
.book-card-actions .button { min-height: 44px; padding: .45rem .55rem; font-size: .8rem; }
.shelf-toggle { width: 44px; min-height: 44px; padding: 0; }
.shelf-toggle[aria-pressed="true"] { border-color: var(--color-primary); background: var(--color-primary); color: #fff; }

.category-grid, .route-grid, .author-grid, .blog-grid, .collection-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.1rem; }
.visual-card { overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.visual-card img { width: 100%; height: auto; aspect-ratio: 5/3; object-fit: cover; }
.visual-card-content { padding: 1.15rem; }
.visual-card h2, .visual-card h3 { margin: 0 0 .45rem; line-height: 1.18; }
.visual-card p { margin: 0 0 1rem; color: var(--color-muted); }
.route-card .route-status, .route-status { margin-bottom: .45rem; color: var(--color-primary); font-size: .76rem; font-weight: 800; letter-spacing: .035em; text-transform: uppercase; }
.route-catalog-status { margin: 0 0 1rem; }
.route-detail-hero .editorial-status { max-width: 76ch; color: var(--color-ink); }
.route-facts { grid-template-columns: repeat(4, minmax(0, 1fr)); max-width: 920px; }
.narrow-wide { max-width: 980px; }
.reading-path-sequence { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.route-step { display: grid; grid-template-columns: 4rem minmax(0, 1fr); gap: 1rem; padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.route-step-number { color: var(--color-accent); font-family: Georgia, serif; font-size: 2rem; line-height: 1; }
.route-step h2 { margin: 0; font-size: 1.65rem; line-height: 1.15; }
.route-step > div:last-child > p:not(.route-status, .book-author) { max-width: 72ch; line-height: 1.65; }
.route-step-meta { display: flex; flex-wrap: wrap; gap: .4rem .85rem; margin: .85rem 0; color: var(--color-muted); font-size: .82rem; }
.author-card { display: grid; grid-template-columns: 110px 1fr; gap: 1rem; align-items: center; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.author-card img { width: 110px; height: 110px; aspect-ratio: 1; object-fit: cover; border-radius: 50%; }
.author-card h2, .author-card h3 { margin: 0; font-size: 1.2rem; }
.author-card p { margin: .3rem 0; color: var(--color-muted); font-size: .88rem; }
.author-filters { display: grid; grid-template-columns: minmax(240px, 2fr) repeat(2, minmax(170px, 1fr)) auto; gap: .8rem; align-items: end; margin-bottom: 1rem; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.author-filters label { display: grid; gap: .25rem; color: var(--color-muted); font-size: .78rem; font-weight: 750; }
.author-identity { margin: 1.3rem 0; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.author-identity h2 { margin-top: 0; }
.author-identity dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; margin: 0; }
.author-identity dl div { min-width: 0; }
.author-identity dt { color: var(--color-muted); font-size: .75rem; font-weight: 800; text-transform: uppercase; }
.author-identity dd { margin: .1rem 0 0; overflow-wrap: anywhere; }
.hub-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.hub-card, .term-card, .hub-method { padding: 1.15rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.hub-card h3, .term-card h2 { margin: 0 0 .45rem; line-height: 1.2; }
.hub-card p, .term-card p { color: var(--color-muted); }
.hub-card span { color: var(--color-muted); font-size: .78rem; }
.hub-method { margin-bottom: 1.25rem; border-left: 4px solid var(--color-accent); }
.hub-method h2 { margin-top: 0; }
.intent-group + .intent-group { margin-top: 2.5rem; }
.intent-list { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.intent-book { display: grid; grid-template-columns: 3rem 120px minmax(0, 1fr); gap: 1rem; align-items: start; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.intent-book > img { width: 120px; aspect-ratio: 3/4; object-fit: cover; border-radius: var(--radius-sm); }
.intent-book h2 { margin: 0; font-size: 1.6rem; line-height: 1.15; }
.unranked-list .intent-book { grid-template-columns: 120px minmax(0, 1fr); }
.compact-stats { margin-top: 1.5rem; }
.seo-faq { margin-top: 3rem; }
.intent-rank { color: var(--color-accent); font-family: Georgia, serif; font-size: 1.55rem; }
.term-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }
.prose blockquote { margin: 1.25rem 0; padding: 1rem 1.2rem; border-left: 4px solid var(--color-accent); background: var(--color-surface); font-size: 1.15rem; }
.update-list { display: grid; gap: 1rem; }
.update-list article { padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.update-list article h2 { margin: .25rem 0; }
.update-list time { color: var(--color-primary); font-size: .8rem; font-weight: 800; }

.continue-card { display: grid; grid-template-columns: 78px 1fr auto; gap: 1rem; align-items: center; padding: 1rem; border: 1px solid var(--color-border); border-left: 5px solid var(--color-accent); border-radius: var(--radius-md); background: var(--color-surface); }
.continue-card img { width: 78px; aspect-ratio: 3/4; object-fit: cover; border-radius: .35rem; }
.progress-track { overflow: hidden; height: 6px; margin-top: .45rem; border-radius: 999px; background: var(--color-border); }
.progress-track span { display: block; height: 100%; background: var(--color-accent); }

.page-hero { padding: 3.2rem 0 2rem; border-bottom: 1px solid var(--color-border); background: color-mix(in srgb, var(--color-surface) 72%, transparent); }
.page-hero h1 { max-width: 20ch; margin: 0; font-size: clamp(2.3rem, 5vw, 4.7rem); line-height: 1; letter-spacing: -.035em; }
.page-hero p { max-width: 66ch; margin: 1rem 0 0; color: var(--color-muted); font-size: 1.08rem; }
.breadcrumb { margin-bottom: 1rem; color: var(--color-muted); font-size: .85rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: .35rem; }

.library-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.filters { position: sticky; top: 90px; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.filters h2 { margin-top: 0; font-size: 1.3rem; }
.filter-group { margin-bottom: .85rem; }
.filter-group label { display: block; margin-bottom: .28rem; font-size: .8rem; font-weight: 750; }
.active-filter-row { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1rem; }
.filter-chip { min-height: 44px; padding: .35rem .65rem; border: 1px solid var(--color-border); border-radius: 999px; background: var(--color-surface); color: var(--color-ink); cursor: pointer; }
.filter-chip:hover { border-color: var(--color-primary); }
.book-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1rem; }
.results-summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.load-more-wrap { display: flex; justify-content: center; padding: 2rem 0; }
.mobile-filter-button { display: none; }
.filter-close { display: none; margin-left: auto; }
.empty-state { padding: 2rem; border: 1px dashed var(--color-border); border-radius: var(--radius-md); text-align: center; }

.book-detail-hero { padding: 2.5rem 0; }
.book-detail-grid { display: grid; grid-template-columns: minmax(220px, 330px) minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.book-detail-cover { position: sticky; top: 96px; }
.book-detail-cover img { width: 100%; height: auto; aspect-ratio: 3/4; object-fit: cover; border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-soft); }
.book-detail-cover img[width="1086"][height="1086"] { aspect-ratio: 1; }
.book-detail-copy h1 { max-width: 17ch; margin: .25rem 0 .5rem; font-size: clamp(2.5rem, 5vw, 5rem); line-height: 1; letter-spacing: -.04em; }
.book-detail-author { font-size: 1.15rem; }
.lead { max-width: 68ch; color: var(--color-muted); font-size: 1.08rem; }
.fact-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; margin: 1.4rem 0; }
.fact-list.route-facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.fact { padding: .8rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.fact small { display: block; color: var(--color-muted); }
.detail-actions { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1.4rem 0; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 2rem; align-items: start; }
.prose { max-width: 820px; font-family: Georgia, serif; font-size: 1.08rem; line-height: 1.85; }
.prose h2 { margin: 2.6rem 0 .7rem; font-size: 1.9rem; line-height: 1.15; }
.prose h3 { margin-top: 1.7rem; }
.prose p { margin: 0 0 1.15rem; }
.prose ul { padding-left: 1.25rem; }
.detail-aside { position: sticky; top: 96px; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.detail-aside h2 { margin-top: 0; font-size: 1.2rem; }
.chapter-list { margin: 0; padding: 0; list-style: none; }
.chapter-list a { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem 0; border-bottom: 1px solid var(--color-border); text-decoration: none; }
.tag-list { display: flex; flex-wrap: wrap; gap: .45rem; padding: 0; list-style: none; }
.tag-list li { padding: .3rem .6rem; border-radius: 999px; background: var(--color-accent-soft); font-size: .82rem; }
.timeline { display: grid; gap: .65rem; padding: 0; list-style: none; }
.timeline li { display: grid; grid-template-columns: 5rem 1fr; gap: .75rem; padding-left: .9rem; border-left: 3px solid var(--color-accent); }
.timeline strong { font-variant-numeric: tabular-nums; color: var(--color-primary); }
.article-toc { margin: 1.5rem 0 2rem; padding: 1rem 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.article-toc h2 { margin: 0 0 .6rem; font-size: 1.1rem; }
.article-toc ol { margin: 0; padding-left: 1.25rem; columns: 2; }
.article-toc li { break-inside: avoid; margin: .25rem 0; }
details.faq { margin-bottom: .65rem; padding: .7rem .85rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
details.faq summary { display: flex; min-height: 44px; align-items: center; cursor: pointer; font-weight: 750; }
.editorial-status { padding: .65rem .8rem; border-radius: var(--radius-sm); background: color-mix(in srgb, var(--color-accent-soft) 42%, transparent); color: var(--color-muted); font-family: system-ui, sans-serif; font-size: .88rem; }
.rights-record { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; margin: 1rem 0; font-family: system-ui, sans-serif; }
.rights-record div { padding: .7rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.rights-record dt { color: var(--color-muted); font-size: .78rem; font-weight: 750; text-transform: uppercase; }
.rights-record dd { margin: .2rem 0 0; overflow-wrap: anywhere; }
.legal-note.warning { border-left-color: var(--color-accent); }

.reader-page { --reader-size: 19px; --reader-leading: 1.85; --reader-column: 760px; }
.reader-toolbar { position: sticky; z-index: 90; top: 70px; border-bottom: 1px solid var(--color-border); background: color-mix(in srgb, var(--color-surface) 94%, transparent); backdrop-filter: blur(12px); }
.reader-toolbar-row { display: flex; align-items: center; gap: .5rem; min-height: 58px; }
.reader-title { overflow: hidden; margin-right: auto; text-overflow: ellipsis; white-space: nowrap; }
.reader-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr) 270px; gap: 1.5rem; align-items: start; width: min(calc(100% - 2rem), 1500px); margin: 1.5rem auto 5rem; }
.reader-panel { position: sticky; top: 145px; max-height: calc(100vh - 165px); overflow: auto; padding: .85rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); scrollbar-width: thin; }
.reader-panel h2 { margin: 0 0 .7rem; font-size: 1.1rem; }
.reader-panel-close, .mobile-only { display: none; }
.reader-toc { margin: 0; padding: 0; list-style: none; }
.reader-toc button { width: 100%; min-height: 44px; padding: .45rem .55rem; border: 0; border-radius: .4rem; background: transparent; color: var(--color-ink); text-align: left; cursor: pointer; }
.reader-toc button:hover, .reader-toc button[aria-current="true"] { background: var(--color-accent-soft); }
.reader-article { width: min(100%, var(--reader-column)); margin-inline: auto; padding: clamp(1.4rem, 4vw, 3rem); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-soft); }
.reader-article h1 { margin: 0 0 2rem; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.1; text-align: center; }
.reader-content { font-family: Georgia, "Times New Roman", serif; font-size: var(--reader-size); line-height: var(--reader-leading); }
.reader-content p { margin: 0 0 1.35em; }
.reader-content mark { padding: .05em .12em; border-radius: .18em; color: inherit; background: color-mix(in srgb, #f1c453 66%, var(--color-surface)); }
.reader-content p.is-speaking { border-left: 4px solid var(--color-accent); padding-left: .85rem; background: color-mix(in srgb, var(--color-accent-soft) 45%, transparent); }
.chapter-guide { margin-top: 3rem; padding: 1rem; border-left: 4px solid var(--color-accent); background: color-mix(in srgb, var(--color-accent-soft) 35%, transparent); }
.chapter-guide h2 { margin-top: 0; }
.chapter-guide details { margin-top: .75rem; }
.reader-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; }
.reader-settings label { display: grid; gap: .25rem; margin-bottom: .75rem; font-size: .8rem; font-weight: 700; }
.reader-settings input, .reader-settings select { width: 100%; }
.reader-highlights { display: grid; gap: .5rem; max-height: 21rem; margin: 0; padding: 0; overflow: auto; list-style: none; }
.reader-highlights li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .4rem; align-items: start; }
.reader-highlights [data-highlight-jump] { padding: .55rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); text-align: left; color: var(--color-text); background: var(--color-surface); }
.reader-highlights [data-highlight-jump] span { display: block; margin-bottom: .2rem; color: var(--color-muted); font-size: .72rem; font-weight: 700; }
.local-data-tools { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.5rem; align-items: center; margin-bottom: 2rem; padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.local-data-tools h2, .local-data-tools p { margin: 0; }
.local-data-tools p { margin-top: .35rem; color: var(--color-muted); }
.local-data-actions { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; }
.reader-progress { position: fixed; z-index: 300; top: 0; left: 0; width: 0; height: 3px; background: var(--color-accent); }
.mobile-reader-nav { position: fixed; z-index: 120; right: 0; bottom: 0; left: 0; display: none; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--color-border); background: var(--color-surface); }
.mobile-reader-nav button { min-height: 54px; border: 0; border-right: 1px solid var(--color-border); background: transparent; color: var(--color-ink); }
.speech-panel { position: fixed; z-index: 400; right: 1rem; bottom: 1rem; display: none; width: min(420px, calc(100vw - 2rem)); max-height: calc(100vh - 2rem); overflow: auto; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: 0 20px 70px rgba(0,0,0,.28); }
.speech-panel.is-open { display: block; }
.speech-actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; }
.resume-toast { position: fixed; z-index: 500; right: 1rem; bottom: 1rem; padding: .7rem 1rem; border-radius: var(--radius-sm); background: var(--color-ink); color: var(--color-surface); animation: toast 4s both; }
.tracking-consent { position: fixed; z-index: 520; left: 1rem; bottom: 1rem; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; align-items: center; width: min(46rem, calc(100vw - 2rem)); padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: 0 20px 70px rgba(0,0,0,.25); }
.tracking-consent[hidden] { display: none; }
.tracking-consent p { margin: .25rem 0 0; color: var(--color-muted); font-size: .85rem; }
.tracking-consent-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.gtm-noscript-frame { display: none; visibility: hidden; }
.install-banner { position: fixed; z-index: 480; right: 1rem; bottom: 1rem; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; align-items: center; width: min(42rem, calc(100vw - 2rem)); padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: 0 20px 70px rgba(0,0,0,.25); }
.install-banner[hidden] { display: none; }
.install-banner p { margin: .25rem 0 0; color: var(--color-muted); font-size: .85rem; }
.install-actions { display: flex; gap: .5rem; }
@keyframes toast { 0%,100% { opacity: 0; transform: translateY(12px); } 12%,80% { opacity: 1; transform: none; } }
body.immersive .site-header, body.immersive .reader-toolbar, body.immersive .reader-panel, body.immersive .mobile-reader-nav { display: none; }
body.immersive .reader-layout { display: block; width: min(calc(100% - 1rem), var(--reader-column)); margin-top: .5rem; }
body.immersive .reader-article { border: 0; box-shadow: none; }

.search-results { display: grid; gap: .7rem; margin-top: 1rem; }
.search-box.has-suggestions { position: relative; }
.search-suggestions { position: absolute; z-index: 220; top: calc(100% + .35rem); right: 0; left: 0; max-height: min(70vh, 32rem); overflow: auto; padding: .4rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); box-shadow: 0 18px 50px rgba(0,0,0,.2); }
.search-suggestion { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: .65rem; align-items: start; padding: .7rem; border-radius: .5rem; color: var(--color-ink); text-decoration: none; }
.search-suggestion:hover, .search-suggestion[aria-selected="true"] { background: var(--color-accent-soft); }
.search-suggestion strong, .search-suggestion small { display: block; }
.search-suggestion small { margin-top: .1rem; color: var(--color-muted); }
.search-suggestion-empty { margin: 0; padding: .7rem; color: var(--color-muted); }
.search-result { padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.search-result a { font-weight: 800; }
.type-label { display: inline-block; margin-right: .5rem; padding: .15rem .45rem; border-radius: 999px; background: var(--color-accent-soft); font-size: .72rem; font-weight: 750; }
.form-grid { display: grid; gap: 1rem; }
.form-grid label { display: grid; gap: .3rem; font-weight: 700; }
.support-card { width: min(100%, 1040px); margin: 2rem auto; padding: clamp(1.5rem, 5vw, 4rem); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.legal-note { padding: .9rem; border-left: 4px solid var(--color-sage); background: color-mix(in srgb, var(--color-sage) 10%, transparent); }
.reason-grid { display: grid; gap: .8rem; margin-top: 1rem; }
.reason-card { display: grid; grid-template-columns: 2.2rem minmax(0, 1fr); gap: .8rem; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.reason-card h3, .reason-card p { margin-top: 0; }
.reason-card p:last-child { margin-bottom: 0; }
.selection-actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.selection-item { display: grid; grid-template-rows: auto 1fr; align-content: start; }
.selection-item .book-card { height: 100%; }
.recommendation-reason { margin: .55rem 0 0; padding: .65rem .7rem; border-left: 3px solid var(--color-sage); color: var(--color-muted); font-size: .78rem; line-height: 1.45; }

.ranking-controls { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.ranking-list { display: grid; gap: .65rem; margin: 0; padding: 0; list-style: none; }
.ranking-row { display: grid; grid-template-columns: 3rem 64px minmax(0, 1fr) auto; gap: .9rem; align-items: center; padding: .75rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.ranking-row img { width: 64px; aspect-ratio: 3/4; border-radius: .35rem; object-fit: cover; }
.ranking-row strong, .ranking-row span { display: block; }
.ranking-row span:not(.ranking-number) { margin-top: .15rem; color: var(--color-muted); font-size: .78rem; }
.ranking-number { color: var(--color-accent); font-family: Georgia, serif; font-size: 1.45rem; font-weight: 800; text-align: center; }

.insight-metrics { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .8rem; margin-bottom: 2rem; }
.insight-metrics article { padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.insight-metrics strong, .insight-metrics span { display: block; }
.insight-metrics strong { color: var(--color-accent); font-family: Georgia, serif; font-size: 1.75rem; }
.insight-metrics span { margin-top: .25rem; color: var(--color-muted); font-size: .78rem; }
.insight-week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: .55rem; min-height: 11rem; margin-bottom: 2rem; align-items: end; }
.insight-week > div { display: grid; grid-template-rows: 7rem auto auto; gap: .25rem; text-align: center; }
.insight-week > div > span { align-self: end; height: max(.25rem, var(--activity)); border-radius: .4rem .4rem 0 0; background: var(--color-accent); }
.insight-week strong, .insight-week small { font-size: .72rem; }
.insight-week small { color: var(--color-muted); }
.insight-definition-list { margin: 0; }
.insight-definition-list div { display: flex; justify-content: space-between; gap: 1rem; padding: .5rem 0; border-bottom: 1px solid var(--color-border); }
.insight-definition-list dd { margin: 0; font-weight: 800; }

.chapter-static-layout { display: grid; grid-template-columns: minmax(0, 780px) 290px; gap: 2rem; justify-content: center; align-items: start; width: min(calc(100% - 2rem), 1200px); margin-inline: auto; }
.chapter-static-text { padding: clamp(1.2rem, 4vw, 3rem); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-soft); font-family: Georgia, "Times New Roman", serif; font-size: 1.15rem; line-height: 1.9; }
.chapter-static-text p { margin: 0 0 1.35em; scroll-margin-top: 6rem; }
.chapter-context { top: 6.5rem; }
.chapter-page-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1.5rem; }
.chapter-page-nav a { max-width: 48%; }
.chapter-completion { margin-top: 2rem; padding: 1.2rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: color-mix(in srgb, var(--color-accent-soft) 38%, var(--color-surface)); }
.chapter-completion[hidden] { display: none; }
.chapter-completion h2 { margin-top: 0; }
.chapter-completion-actions { display: flex; flex-wrap: wrap; gap: .6rem; }

.site-footer { margin-top: 4rem; padding: 3rem 0; border-top: 1px solid var(--color-border); background: var(--color-surface); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2rem; }
.footer-grid h2 { font-family: inherit; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.footer-grid ul { margin: 0; padding: 0; list-style: none; }
.footer-grid li { margin-bottom: .4rem; }
.footer-grid a { color: var(--color-muted); }
.footer-bottom { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: .82rem; }

@media (min-width: 1750px) {
  .book-grid { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .horizontal-shelf { grid-auto-columns: minmax(190px, 1fr); }
}

@media (max-width: 1200px) {
  .desktop-nav { gap: .65rem; }
  .desktop-nav a:nth-last-child(2) { display: none; }
  .book-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .reader-layout { grid-template-columns: 230px minmax(0, 1fr); }
  .reader-layout .reader-panel:last-child { display: none; }
}

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .header-actions { margin-left: auto; }
  .mobile-menu-button { display: inline-grid; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { order: 1; }
  .hero-art { order: 2; min-height: 320px; }
  .hero-art img { aspect-ratio: 16/10; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-strip div:nth-child(2) { border-right: 0; }
  .stat-strip div:nth-child(-n+2) { border-bottom: 1px solid var(--color-border); }
  .category-grid, .route-grid, .blog-grid, .collection-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .author-grid { grid-template-columns: 1fr; }
  .author-filters { grid-template-columns: 1fr 1fr; }
  .hub-grid, .term-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .library-layout { grid-template-columns: 1fr; }
  .local-data-tools { grid-template-columns: 1fr; }
  .filters { position: fixed; z-index: 300; inset: 0 0 0 auto; width: min(90vw, 360px); border-radius: 0; transform: translateX(110%); transition: transform .25s; }
  .filters.is-open { transform: none; }
  .filters .filter-close { display: grid; }
  .mobile-filter-button { display: inline-flex; }
  .book-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .content-layout { grid-template-columns: 1fr; }
  .detail-aside { position: static; }
  .reader-layout { display: block; width: min(calc(100% - 1rem), var(--reader-column)); }
  .reader-panel { position: fixed; z-index: 250; inset: 0 auto 0 0; display: block !important; width: min(88vw, 340px); max-height: none; border-radius: 0; transform: translateX(-110%); transition: transform .25s; }
  .reader-panel.is-open { transform: none; }
  .reader-panel .reader-panel-close { display: grid; margin: 0 0 .75rem auto; }
  .reader-panel .mobile-only { display: inline-flex; margin-bottom: .75rem; }
  .mobile-reader-nav { display: grid; }
  .reader-article { margin-bottom: 4rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .insight-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .chapter-static-layout { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .container, .narrow { width: min(calc(100% - 1.25rem), var(--content)); }
  .header-row { min-height: 60px; gap: .4rem; }
  .brand img { width: 124px; }
  .hero { padding-top: 1rem; }
  .hero-grid { min-height: 0; }
  .hero-copy { order: 1; padding: 1.5rem; }
  .hero h1 { font-size: clamp(2.45rem, 12vw, 3.45rem); }
  .hero-art { order: 2; min-height: 0; max-height: 220px; }
  .hero-art img { height: 220px; aspect-ratio: 16/10; }
  .section-heading { align-items: start; flex-direction: column; }
  .category-grid, .route-grid, .blog-grid, .collection-grid { grid-template-columns: 1fr; }
  .author-filters, .author-identity dl { grid-template-columns: 1fr; }
  .hub-grid, .term-grid { grid-template-columns: 1fr; }
  .intent-book { grid-template-columns: 2.5rem minmax(0, 1fr); }
  .intent-book > img { grid-column: 2; width: min(42vw, 150px); }
  .intent-book > div:last-child { grid-column: 2; }
  .unranked-list .intent-book { grid-template-columns: minmax(0, 1fr); }
  .unranked-list .intent-book > img,
  .unranked-list .intent-book > div:last-child { grid-column: 1; }
  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; }
  .book-card-body { padding: .65rem; }
  .book-title { font-size: .96rem; }
  .book-meta { font-size: .68rem; }
  .book-card-actions { grid-template-columns: 1fr; }
  .shelf-toggle { width: 100%; }
  .book-detail-grid { grid-template-columns: 1fr; }
  .book-detail-copy { order: 1; }
  .book-detail-cover { position: static; order: 2; width: min(54vw, 210px); margin: 1rem auto 0; }
  .book-detail-copy h1 { font-size: 2.65rem; }
  .fact-list { grid-template-columns: 1fr 1fr; }
  .fact-list.route-facts { grid-template-columns: 1fr 1fr; }
  .route-step { grid-template-columns: 2.7rem minmax(0, 1fr); padding: 1rem; }
  .route-step-number { font-size: 1.45rem; }
  .rights-record { grid-template-columns: 1fr; }
  .continue-card { grid-template-columns: 62px 1fr; }
  .continue-card > .button { grid-column: 1/-1; }
  .reader-toolbar { top: 60px; }
  .reader-toolbar-row .reader-title { display: none; }
  .reader-toolbar-row > button { display: none; }
  .reader-article { padding: 1.2rem 1rem; }
  .reader-article h1 { font-size: 2rem; }
  .tracking-consent, .install-banner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .ranking-row { grid-template-columns: 2.2rem 52px minmax(0, 1fr); }
  .ranking-row img { width: 52px; }
  .ranking-row > .button { grid-column: 2/-1; }
  .insight-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chapter-static-text { padding: 1.1rem; font-size: 1.04rem; }
  .chapter-page-nav { flex-direction: column; }
  .chapter-page-nav a { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}