:root {
  --bg: #f5efe4;
  --bg-strong: #efe5d5;
  --surface: rgba(255, 252, 246, 0.84);
  --surface-strong: rgba(255, 250, 244, 0.95);
  --surface-border: rgba(17, 50, 77, 0.14);
  --ink: #10263b;
  --ink-soft: #30485f;
  --ink-muted: #5b6c7d;
  --accent: #a44b1f;
  --accent-soft: #d6905f;
  --signal: #0f5d86;
  --shadow: 0 24px 60px rgba(16, 38, 59, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Spline Sans", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(212, 144, 95, 0.15), transparent 32%),
    radial-gradient(circle at top right, rgba(15, 93, 134, 0.16), transparent 28%),
    linear-gradient(180deg, #f8f3ea 0%, #f1e8da 44%, #f5efe4 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.12)),
    repeating-linear-gradient(
      90deg,
      rgba(16, 38, 59, 0.015) 0,
      rgba(16, 38, 59, 0.015) 1px,
      transparent 1px,
      transparent 24px
    );
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.page-shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 24px auto 48px;
}

.hero {
  position: relative;
  overflow: clip;
  border-radius: 36px;
  background: #122d43;
  color: #fcfbf8;
  box-shadow: var(--shadow);
}

.hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(8, 25, 38, 0.88), rgba(12, 44, 70, 0.66)),
    radial-gradient(circle at 18% 22%, rgba(212, 144, 95, 0.34), transparent 32%);
}

.hero--article::after {
  background:
    linear-gradient(135deg, rgba(7, 22, 34, 0.94), rgba(10, 38, 61, 0.82)),
    radial-gradient(circle at 18% 22%, rgba(212, 144, 95, 0.22), transparent 28%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 54px 54px 58px;
  animation: fade-up 0.8s ease both;
}

.hero__content::before {
  content: "";
  position: absolute;
  inset: 20px auto 20px 20px;
  width: min(58%, 620px);
  border-radius: 28px;
  background: linear-gradient(90deg, rgba(7, 22, 34, 0.5), rgba(7, 22, 34, 0.12));
  backdrop-filter: blur(2px);
  z-index: -1;
}

.hero--home .hero__content {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero--home .hero__content::before {
  background: linear-gradient(90deg, rgba(7, 22, 34, 0.68), rgba(7, 22, 34, 0.2));
}

.hero--article .hero__content {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.hero__kicker,
.eyebrow,
.mini-label,
.muted-label,
.site-nav__eyebrow {
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-soft);
}

.hero h1,
.hero h2,
.feature-card h3,
.structure-card h3,
.section-heading h2,
.article-body h2,
.article-body h3,
.notice-card h2 {
  font-family: "Newsreader", Georgia, serif;
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.hero h1 {
  margin: 16px 0 16px;
  max-width: 12ch;
  font-size: clamp(2.6rem, 5.2vw, 4.7rem);
  text-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
}

.hero p {
  max-width: 70ch;
  font-size: 1.08rem;
  line-height: 1.7;
  color: rgba(252, 251, 248, 0.82);
  text-shadow: 0 8px 22px rgba(0, 0, 0, 0.26);
}

.hero--article h1,
.hero--article .hero__kicker,
.hero--article .breadcrumbs,
.hero--article .article-standfirst,
.hero--article p {
  color: rgba(252, 251, 248, 0.96);
}

.hero--home h1,
.hero--home .hero__kicker,
.hero--home p {
  color: rgba(252, 251, 248, 0.97);
}

.hero--article .article-standfirst {
  max-width: 58ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    background-color 0.25s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button--solid {
  background: #f7d6bf;
  color: #11263b;
}

.button--ghost {
  border-color: rgba(16, 38, 59, 0.14);
  background: rgba(255, 252, 246, 0.7);
  color: var(--ink);
}

.button--ghost:hover,
.button--ghost:focus-visible {
  border-color: rgba(16, 38, 59, 0.32);
}

.layout {
  display: grid;
  grid-template-columns: minmax(250px, 290px) minmax(0, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.layout--home {
  grid-template-columns: minmax(0, 1fr);
}

.layout--with-rail {
  grid-template-columns: minmax(0, 1fr) minmax(250px, 290px);
  grid-template-areas: "main rail";
  align-items: start;
}

.layout--with-rail .content {
  grid-area: main;
}

.sidebar {
  position: relative;
}

.site-nav {
  position: sticky;
  top: 24px;
  padding: 24px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(16, 38, 59, 0.06);
}

.site-nav__title {
  margin: 8px 0 10px;
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.7rem;
}

.site-nav__intro {
  margin: 0 0 20px;
  color: var(--ink-muted);
  line-height: 1.65;
  font-size: 0.96rem;
}

.site-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.site-nav__item a {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
  padding: 12px 14px;
  border-radius: 14px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.5);
  transition:
    transform 0.25s ease,
    background-color 0.25s ease;
}

.site-nav__item a:hover,
.site-nav__item a:focus-visible,
.site-nav__item.is-active a {
  transform: translateX(4px);
  background: rgba(212, 144, 95, 0.16);
}

.site-nav__name {
  font-weight: 700;
  line-height: 1.4;
}

.site-nav__meta {
  color: var(--ink-muted);
  font-size: 0.78rem;
  text-align: right;
}

.outline-card {
  padding: 16px 18px 10px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background: rgba(252, 249, 244, 0.94);
  box-shadow: 0 16px 42px rgba(16, 38, 59, 0.08);
}

.outline-card__header h2 {
  margin: 4px 0 8px;
  font-family: "Newsreader", Georgia, serif;
  font-size: clamp(1.45rem, 2.5vw, 2.05rem);
}

.outline-card__header p:last-child {
  margin: 0;
  color: var(--ink-muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

.outline-accordion {
  margin-top: 14px;
  display: grid;
  gap: 8px;
}

.outline-group {
  border: 1px solid rgba(16, 38, 59, 0.1);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
  overflow: clip;
}

.outline-group summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

.outline-group summary::-webkit-details-marker {
  display: none;
}

.outline-group[open] summary {
  background: rgba(212, 144, 95, 0.1);
}

.outline-group__name {
  font-weight: 700;
}

.outline-group__count {
  min-width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(15, 93, 134, 0.12);
  color: var(--signal);
  font-size: 0.78rem;
  font-weight: 700;
}

.outline-group__body {
  padding: 0 12px 12px;
}

.outline-group__jump {
  display: block;
  margin: 2px 0 10px;
  color: var(--ink-muted);
  text-decoration: none;
  line-height: 1.45;
  font-size: 0.82rem;
}

.outline-topic-tree,
.outline-subtree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.outline-subtree {
  margin-top: 8px;
  padding-left: 12px;
  border-left: 1px solid rgba(16, 38, 59, 0.1);
}

.outline-tree__item {
  list-style: none;
}

.outline-branch {
  border: 1px solid rgba(16, 38, 59, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.54);
  overflow: clip;
}

.outline-branch summary {
  list-style: none;
  cursor: pointer;
  padding: 7px 10px;
}

.outline-branch summary::-webkit-details-marker {
  display: none;
}

.outline-branch[open] summary {
  background: rgba(212, 144, 95, 0.08);
}

.outline-branch__summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  width: 100%;
}

.outline-branch__label,
.outline-node__link,
.outline-node__text,
.outline-node__jump {
  display: block;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.outline-branch__label {
  font-weight: 700;
  color: var(--ink-soft);
}

.outline-branch__count {
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.outline-branch__body {
  padding: 0 10px 10px;
}

.outline-node__jump {
  margin: 2px 0 8px;
  color: var(--signal);
  text-decoration: none;
  font-size: 0.76rem;
}

.outline-node__link,
.outline-node__text {
  padding: 3px 0;
}

.outline-node__link {
  color: var(--ink-soft);
  text-decoration: none;
}

.outline-node__link:hover,
.outline-node__link:focus-visible,
.outline-node__jump:hover,
.outline-node__jump:focus-visible {
  color: var(--signal);
}

.outline-node__link.is-current,
.outline-node__jump.is-current {
  color: var(--accent);
  font-weight: 700;
}

.content {
  display: grid;
  gap: 24px;
}

.home-accordion {
  display: grid;
  gap: 18px;
}

.home-panel {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 12% 10%, rgba(212, 144, 95, 0.15), transparent 28%),
    var(--surface-strong);
  box-shadow: 0 16px 42px rgba(16, 38, 59, 0.08);
  overflow: hidden;
}

.home-panel summary {
  cursor: pointer;
  list-style: none;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 24px 28px;
}

.home-panel summary::-webkit-details-marker {
  display: none;
}

.home-panel__number {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(164, 75, 31, 0.34);
  color: var(--accent);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.home-panel__title h2 {
  margin: 4px 0 0;
  font-size: clamp(1.5rem, 3.2vw, 2.45rem);
}

.home-panel__cue {
  color: var(--signal);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 1.45rem;
  font-weight: 800;
  transition: transform 0.25s ease;
}

.home-panel[open] .home-panel__cue {
  transform: rotate(45deg);
}

.home-panel__body {
  padding: 0 28px 28px;
}

.home-panel__intro {
  max-width: 72ch;
  color: var(--ink-muted);
  line-height: 1.75;
}

.notice-card,
.content-card,
.taxonomy-card,
.expansion-card,
.article-card,
.prompt-ledger,
.toc-card,
.feature-card,
.route-card,
.glossary-card,
.structure-card,
.contributors,
.callout-card {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background: var(--surface-strong);
  box-shadow: 0 16px 42px rgba(16, 38, 59, 0.08);
}

.notice-card,
.content-card,
.taxonomy-card,
.expansion-card,
.article-card,
.prompt-ledger,
.toc-card,
.callout-card {
  padding: 26px 28px;
}

.notice-card p,
.content-card p,
.taxonomy-card p,
.expansion-card p,
.article-card p,
.prompt-ledger p,
.toc-card p {
  line-height: 1.75;
  color: var(--ink-soft);
}

.section-heading {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 20px;
  align-items: end;
}

.section-heading h2 {
  margin: 8px 0 0;
  font-size: clamp(1.7rem, 3.2vw, 2.7rem);
}

.section-heading p {
  max-width: 66ch;
  color: var(--ink-muted);
  line-height: 1.7;
}

.contributors {
  padding: 28px;
}

.contributors__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.contributor-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(16, 38, 59, 0.08);
}

.contributor-card__media {
  width: 92px;
  height: 92px;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 251, 246, 0.98), rgba(241, 234, 223, 0.94));
  box-shadow: inset 0 0 0 1px rgba(16, 38, 59, 0.08);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}

.contributor-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
}

.contributor-card__media--portrait img {
  object-fit: cover;
  padding: 0;
}

.contributor-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.contributor-card p {
  margin: 0;
  color: var(--ink-muted);
  line-height: 1.65;
}

.approach-grid,
.feature-grid,
.route-grid,
.glossary-grid,
.taxonomy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.route-grid,
.glossary-grid {
  align-items: start;
}

.route-grid--home,
.glossary-grid--home {
  margin-top: 18px;
}

.structure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.section-anchor-bank {
  position: relative;
  height: 0;
  overflow: hidden;
}

.structure-card,
.feature-card,
.route-card,
.glossary-card {
  padding: 24px;
  animation: fade-up 0.7s ease both;
}

.route-card,
.glossary-card {
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.82), rgba(244, 238, 226, 0.7)),
    var(--surface-strong);
}

.route-card h3,
.glossary-card h3 {
  margin: 8px 0 10px;
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
}

.route-card p,
.glossary-card p {
  color: var(--ink-soft);
  line-height: 1.72;
}

.route-steps {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding-left: 0;
  list-style: none;
}

.route-steps li {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(16, 38, 59, 0.09);
  background: rgba(255, 255, 255, 0.58);
}

.route-steps a {
  color: var(--ink);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}

.route-steps a:hover,
.route-steps a:focus-visible {
  color: var(--signal);
}

.route-steps span {
  color: var(--ink-muted);
  line-height: 1.55;
}

.glossary-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin: 16px 0;
}

.structure-card {
  scroll-margin-top: 32px;
}

.structure-card:target,
.structure-card.is-anchor-target {
  border-color: rgba(164, 75, 31, 0.46);
  box-shadow:
    0 0 0 4px rgba(164, 75, 31, 0.11),
    0 16px 42px rgba(16, 38, 59, 0.08);
}

.structure-card__header h3 {
  margin: 8px 0 0;
  font-size: 1.28rem;
  line-height: 1.25;
}

.structure-card__body {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.seed-list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--ink-soft);
  line-height: 1.65;
}

.seed-list--preview {
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.seed-list--preview li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(16, 38, 59, 0.08);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.seed-list--preview li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.seed-list--preview a {
  text-decoration: none;
  color: var(--ink-soft);
}

.seed-list--preview a:hover,
.seed-list--preview a:focus-visible {
  color: var(--signal);
}

.seed-list__meta {
  font-size: 0.74rem;
  color: var(--ink-muted);
  white-space: nowrap;
}

.structure-card__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: 22px;
}

.text-link {
  color: var(--signal);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 0;
  background: rgba(15, 93, 134, 0.1);
  color: var(--signal);
  font-family: "Spline Sans", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

.tag-chip__count {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: currentColor;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.tag-chip:hover,
.tag-chip:focus-visible,
.tag-chip.is-active {
  transform: translateY(-1px);
  background: rgba(15, 93, 134, 0.18);
  color: var(--ink);
}

.tag-chip--large {
  min-height: 36px;
  background: rgba(164, 75, 31, 0.11);
  color: var(--accent);
}

.tag-results {
  margin-top: 22px;
  padding: 22px;
  border: 1px solid rgba(16, 38, 59, 0.1);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.56);
}

.landing-search {
  margin: 22px 0;
  padding: 20px;
  border: 1px solid rgba(16, 38, 59, 0.1);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(15, 93, 134, 0.08), rgba(164, 75, 31, 0.08)),
    rgba(255, 255, 255, 0.55);
}

.landing-search label {
  display: grid;
  gap: 4px;
  color: var(--ink-muted);
}

.landing-search__control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
}

.landing-search input {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(16, 38, 59, 0.18);
  border-radius: 999px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  font: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.74);
}

.landing-search input:focus {
  outline: 3px solid rgba(15, 93, 134, 0.18);
  border-color: rgba(15, 93, 134, 0.42);
}

.landing-search__results {
  margin-top: 18px;
}

.tag-results__groups {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.tag-results__group {
  border: 1px solid rgba(16, 38, 59, 0.1);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.46);
  overflow: hidden;
}

.tag-results__group summary {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  cursor: pointer;
  list-style: none;
  padding: 12px 14px;
  color: var(--ink);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag-results__group summary::-webkit-details-marker {
  display: none;
}

.tag-results__group .tag-results__list {
  margin: 0;
  padding: 0 14px 14px;
}

.tag-results__header h3 {
  margin: 6px 0;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
}

.tag-results__header p:last-child {
  margin-top: 0;
  color: var(--ink-muted);
}

.tag-results__list {
  margin-top: 16px;
}

.feature-card h3 {
  margin: 10px 0 12px;
  font-size: 1.65rem;
}

.feature-card p {
  color: var(--ink-soft);
  line-height: 1.7;
}

.content-card ul,
.taxonomy-card ul,
.expansion-card ul,
.article-body ul,
.article-body ol,
.prompt-ledger ol,
.toc-card ol {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(250px, 290px) minmax(0, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.article-layout--with-rail {
  grid-template-columns: minmax(0, 1fr) minmax(250px, 290px);
  grid-template-areas: "main rail";
  align-items: start;
}

.article-layout--single {
  grid-template-columns: minmax(0, 1fr);
}

.article-layout--single .article-stack {
  width: min(100%, 980px);
  margin: 0 auto;
}

.article-layout--with-rail .article-stack {
  grid-area: main;
  width: min(100%, 940px);
  margin: 0;
}

.context-rail-slot {
  grid-area: rail;
  align-self: start;
  min-height: 1px;
}

.breadcrumbs {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.92rem;
  color: rgba(252, 251, 248, 0.78);
}

.breadcrumbs a {
  text-decoration: none;
}

.article-standfirst {
  max-width: 62ch;
}

.article-stack {
  display: grid;
  gap: 24px;
}

.context-rail {
  position: fixed;
  top: 18px;
  right: max(16px, calc((100vw - var(--max-width)) / 2 + 16px));
  width: min(290px, calc(100vw - 32px));
  max-height: calc(100vh - 36px);
  overflow: auto;
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(16, 38, 59, 0.12);
  border-radius: 22px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(244, 238, 226, 0.84)),
    var(--surface-strong);
  box-shadow: 0 18px 40px rgba(16, 38, 59, 0.1);
  backdrop-filter: blur(14px);
}

.context-rail__shell {
  display: block;
}

.context-rail__mobile-summary {
  display: none;
}

.context-rail__body {
  display: grid;
  gap: 10px;
}

.context-rail__header {
  display: grid;
  gap: 8px;
}

.context-rail__trail {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  align-items: center;
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.42;
  color: var(--ink);
}

.context-rail__trail a,
.context-rail__trail span {
  display: inline;
  min-height: 0;
  padding: 0;
  border-radius: 0;
  background: none;
  color: inherit;
  text-decoration: none;
}

.context-rail__trail a:hover,
.context-rail__trail a:focus-visible {
  color: var(--signal);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

.context-rail__trail span[aria-current="page"] {
  color: var(--ink);
}

.context-rail__trail-sep {
  color: var(--ink-muted);
}

.context-rail__title {
  margin: 0;
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.32rem;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.context-rail__status {
  display: grid;
  gap: 4px;
  padding: 10px 11px;
  border: 1px solid rgba(16, 38, 59, 0.08);
  border-radius: 15px;
  background: rgba(255, 252, 246, 0.68);
}

.context-rail__status-label,
.context-rail__group summary,
.context-rail__link-meta,
.context-rail__action {
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.context-rail__status-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
}

.context-rail__active-link {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
}

.context-rail__active-link:hover,
.context-rail__active-link:focus-visible {
  color: var(--signal);
}

.context-rail__status-meta {
  color: var(--ink-muted);
  font-size: 0.76rem;
}

.context-rail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.context-rail__action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.85rem;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(16, 38, 59, 0.12);
  background: rgba(255, 255, 255, 0.58);
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
}

.context-rail__action:hover,
.context-rail__action:focus-visible {
  border-color: rgba(15, 93, 134, 0.36);
  color: var(--signal);
}

.context-rail__accordion {
  display: grid;
  gap: 8px;
}

.context-rail__group {
  overflow: clip;
  border: 1px solid rgba(16, 38, 59, 0.09);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.56);
}

.context-rail__group summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 9px 10px;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
}

.context-rail__group summary::-webkit-details-marker {
  display: none;
}

.context-rail__group[open] summary {
  background: rgba(212, 144, 95, 0.08);
}

.context-rail__count {
  min-width: 1.65rem;
  height: 1.65rem;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(15, 93, 134, 0.12);
  color: var(--signal);
  font-size: 0.75rem;
  font-weight: 700;
}

.context-rail__list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0 10px 10px;
  list-style: none;
}

.context-rail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 10px 10px;
}

.context-rail__tags .tag-chip {
  min-height: 28px;
  padding: 0 10px;
  font-size: 0.8rem;
}

.context-rail__list a {
  display: grid;
  gap: 2px;
  padding: 8px 9px;
  border-radius: 11px;
  background: rgba(255, 252, 246, 0.72);
  color: var(--ink-soft);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.context-rail__list a:hover,
.context-rail__list a:focus-visible,
.context-rail__list a.is-active {
  background: rgba(255, 247, 236, 0.94);
  color: var(--ink);
  transform: translateX(2px);
}

.context-rail__list a.is-active {
  box-shadow: inset 2px 0 0 rgba(164, 75, 31, 0.42);
}

.context-rail__link-title {
  font-size: 0.84rem;
  line-height: 1.36;
}

.context-rail__link-meta {
  color: var(--ink-muted);
  font-size: 0.68rem;
}

.context-rail__empty {
  padding: 8px 9px;
  color: var(--ink-muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.context-rail__mobile-main {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.context-rail__mobile-trail,
.context-rail__mobile-active {
  min-width: 0;
}

.context-rail__mobile-trail {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 7px;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.context-rail__mobile-trail a,
.context-rail__mobile-trail span {
  display: inline;
  color: inherit;
  text-decoration: none;
}

.context-rail__mobile-trail a:hover,
.context-rail__mobile-trail a:focus-visible {
  color: var(--signal);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.16em;
}

.context-rail__mobile-active {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.34;
  text-decoration: none;
}

.context-rail__mobile-cue {
  color: var(--signal);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  transition: transform 0.2s ease;
}

.toc-card h2,
.prompt-ledger h2,
.article-card h2,
.callout-card h2 {
  margin: 6px 0 14px;
  font-size: 1.65rem;
}

.toc-card ol {
  margin-top: 0;
}

.prompt-ledger ol {
  list-style: none;
  padding-left: 0;
  display: grid;
  gap: 12px;
}

.prompt-ledger li {
  margin: 0;
}

.prompt-ledger__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 10px 12px;
  border: 1px solid rgba(173, 82, 32, 0.12);
  border-radius: 12px;
  color: inherit;
  text-decoration: none;
  background: rgba(255, 252, 246, 0.58);
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.prompt-ledger__link:hover,
.prompt-ledger__link:focus-visible {
  color: var(--ink-strong);
  border-color: rgba(173, 82, 32, 0.36);
  background: rgba(255, 247, 236, 0.92);
  outline: none;
  transform: translateY(-1px);
}

.prompt-number {
  display: inline-grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 999px;
  border: 1px solid rgba(173, 82, 32, 0.44);
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.95), rgba(255, 245, 231, 0.76) 48%, rgba(173, 82, 32, 0.16)),
    var(--surface-strong);
  color: var(--accent);
  font-family: "Newsreader", Georgia, serif;
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(173, 82, 32, 0.13);
  flex: 0 0 auto;
}

.prompt-ledger__text {
  padding-top: 0.08rem;
  line-height: 1.55;
}

.prompt-ledger li + li {
  margin-top: 0;
}

.article-body {
  display: grid;
  gap: 24px;
}

.article-section {
  padding: 30px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--surface-border);
  background: rgba(255, 252, 246, 0.88);
  box-shadow: 0 14px 34px rgba(16, 38, 59, 0.06);
  scroll-margin-top: 24px;
}

.article-section__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.article-section__meta .eyebrow {
  margin: 0;
}

.article-section__number {
  width: 2.05rem;
  height: 2.05rem;
  text-decoration: none;
  color: var(--accent);
}

.article-section__number:hover,
.article-section__number:focus-visible {
  border-color: rgba(173, 82, 32, 0.7);
  outline: 2px solid rgba(173, 82, 32, 0.2);
  outline-offset: 3px;
}

.article-section__prompt {
  max-width: 78ch;
  margin: 14px 0 30px;
  padding: 10px 12px;
  border-left: 3px solid rgba(173, 82, 32, 0.34);
  border-radius: 9px;
  background: rgba(255, 247, 236, 0.62);
  font-size: 0.76rem;
  line-height: 1.48;
}

.article-section__prompt span {
  display: inline-block;
  margin-right: 0.55rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-size: 0.62rem;
  font-weight: 800;
  color: var(--accent);
}

.article-section h2 {
  margin: 8px 0 16px;
  font-size: clamp(1.65rem, 2.5vw, 2.3rem);
}

.article-section h3 {
  margin: 24px 0 12px;
  font-size: 1.35rem;
}

.article-section p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.82;
}

.article-section strong {
  color: var(--ink-strong);
  font-weight: 800;
}

.future-link {
  color: var(--ink-strong);
  font-weight: 800;
  text-decoration-color: rgba(164, 75, 31, 0.38);
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.18em;
  transition:
    color 160ms ease,
    text-decoration-color 160ms ease;
}

.future-link:hover,
.future-link:focus-visible {
  color: var(--accent);
  text-decoration-color: rgba(164, 75, 31, 0.82);
}

.article-section em {
  color: var(--accent);
  font-style: italic;
}

.article-section p + p,
.article-section ul + p,
.article-section p + ul,
.article-section ol + p,
.article-section p + ol {
  margin-top: 16px;
}

.voice-fragment,
.dialogue-card,
.chart-table-card,
.scholastic-frame {
  margin-top: 20px;
  padding: 20px 22px;
  border-radius: 20px;
  border: 1px solid rgba(16, 38, 59, 0.1);
  background: rgba(255, 255, 255, 0.7);
}

.voice-fragment {
  border-left: 4px solid var(--accent);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  margin-bottom: 10px;
}

.voice-fragment p {
  margin: 0;
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.28rem;
  line-height: 1.38;
  color: var(--ink);
}

.voice-fragment cite {
  display: block;
  margin-top: 8px;
  font-style: normal;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.voice-fragment + p {
  margin-top: 24px;
}

.voice-fragment a {
  color: inherit;
}

.dialogue-card {
  display: grid;
  gap: 16px;
}

.detail-card {
  gap: 10px;
  background:
    linear-gradient(135deg, rgba(255, 252, 246, 0.95), rgba(238, 244, 242, 0.72)),
    rgba(255, 255, 255, 0.82);
}

.detail-card .dialogue-turn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(16, 38, 59, 0.08);
  background: rgba(255, 255, 255, 0.58);
}

.detail-card .dialogue-turn__speaker {
  min-width: 6.5rem;
  margin: 0;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid rgba(15, 93, 134, 0.16);
  background: rgba(236, 247, 248, 0.82);
  text-align: center;
  font-size: 0.78rem;
  color: var(--signal);
}

.detail-card .dialogue-turn--counter .dialogue-turn__speaker {
  border-color: rgba(164, 75, 31, 0.18);
  background: rgba(255, 247, 236, 0.86);
  color: var(--accent);
}

.detail-card--timeline {
  position: relative;
}

.detail-card--timeline .dialogue-turn {
  grid-template-columns: 7rem minmax(0, 1fr);
  border-left: 3px solid rgba(15, 93, 134, 0.22);
}

.detail-card--scores .dialogue-turn__speaker {
  min-width: 5.2rem;
  background: rgba(255, 247, 236, 0.9);
  color: var(--accent);
}

.detail-card--exchanges .dialogue-turn__speaker {
  min-width: 7.2rem;
}

.detail-card--mixed .dialogue-turn__speaker {
  min-width: 6.8rem;
}

.detail-card--questions .dialogue-turn p,
.detail-card--examples .dialogue-turn p,
.detail-card--scores .dialogue-turn p,
.detail-card--mixed .dialogue-turn p {
  line-height: 1.58;
}

.chart-table-stack {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.chart-table-card {
  overflow-x: auto;
  background:
    linear-gradient(135deg, rgba(255, 252, 246, 0.94), rgba(238, 244, 242, 0.72)),
    rgba(255, 255, 255, 0.82);
}

.chart-table {
  width: 100%;
  min-width: 760px;
  border-collapse: separate;
  border-spacing: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.55;
}

.chart-table caption {
  margin-bottom: 12px;
  text-align: left;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.chart-table th,
.chart-table td {
  padding: 14px 16px;
  vertical-align: top;
  border-bottom: 1px solid rgba(16, 38, 59, 0.09);
}

.chart-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: rgba(16, 38, 59, 0.94);
  color: rgba(255, 252, 246, 0.96);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.84rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.chart-table tbody tr:nth-child(even) td {
  background: rgba(238, 244, 242, 0.42);
}

.chart-table tbody tr:hover td {
  background: rgba(255, 247, 236, 0.78);
}

.chart-table td:first-child {
  color: var(--ink-strong);
  font-weight: 800;
}

.learning-card {
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(12, 106, 138, 0.16);
  background:
    linear-gradient(135deg, rgba(236, 247, 248, 0.76), rgba(255, 247, 236, 0.68)),
    rgba(255, 255, 255, 0.74);
}

.learning-card__title {
  margin: 0 0 10px;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
}

.learning-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 1.1rem;
}

.learning-card li {
  color: var(--ink-soft);
  line-height: 1.55;
}

.dialogue-turn p {
  margin: 0;
}

.dialogue-turn__speaker {
  display: inline-block;
  margin-bottom: 6px;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--signal);
}

.dialogue-turn--counter .dialogue-turn__speaker {
  color: var(--accent);
}

.scholastic-frame {
  display: grid;
  gap: 14px;
}

.scholastic-part {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(252, 249, 244, 0.9);
  border: 1px solid rgba(16, 38, 59, 0.08);
}

.scholastic-part p {
  margin: 0;
}

.scholastic-part__label {
  display: block;
  margin-bottom: 6px;
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--accent);
}

.quiz-grid {
  display: grid;
  gap: 16px;
}

.quiz-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(16, 38, 59, 0.08);
}

.quiz-card h3 {
  margin: 0 0 8px;
  font-family: "Spline Sans", system-ui, sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0;
}

.quiz-section {
  padding: 0;
  background:
    radial-gradient(circle at top right, rgba(15, 93, 134, 0.18), transparent 34%),
    radial-gradient(circle at bottom left, rgba(173, 82, 32, 0.1), transparent 38%),
    linear-gradient(135deg, rgba(244, 250, 249, 0.96), rgba(255, 248, 237, 0.9));
  border-color: rgba(15, 93, 134, 0.2);
  overflow: hidden;
}

.quiz-accordion summary {
  cursor: pointer;
  list-style: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: clamp(20px, 3vw, 28px);
}

.quiz-accordion summary::-webkit-details-marker {
  display: none;
}

.quiz-accordion__title {
  display: grid;
  gap: 6px;
}

.quiz-accordion__title .eyebrow {
  margin: 0;
}

.quiz-accordion__heading {
  color: var(--ink-strong);
  font-family: "Newsreader", Georgia, serif;
  font-size: clamp(1.45rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1.06;
}

.quiz-accordion__cue {
  color: var(--signal);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 1.55rem;
  font-weight: 800;
  transition: transform 0.2s ease;
}

.quiz-accordion[open] .quiz-accordion__cue {
  transform: rotate(45deg);
}

.quiz-accordion__body {
  padding: 0 clamp(20px, 3vw, 28px) clamp(20px, 3vw, 28px);
  border-top: 1px solid rgba(15, 93, 134, 0.12);
}

.quiz-section__badge,
.quiz-item__number,
.quiz-option__marker {
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  flex: 0 0 auto;
}

.quiz-section__badge {
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid rgba(15, 93, 134, 0.38);
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.96), rgba(232, 247, 247, 0.82) 54%, rgba(15, 93, 134, 0.16)),
    rgba(244, 250, 249, 0.88);
  color: var(--signal);
  font-family: "Newsreader", Georgia, serif;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  box-shadow: 0 9px 20px rgba(15, 93, 134, 0.13);
}

.article-section .quiz-section__intro {
  max-width: 78ch;
  margin-bottom: 22px;
}

.quiz-list {
  display: grid;
  gap: 18px;
}

.quiz-item {
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid rgba(16, 38, 59, 0.1);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.62);
}

.quiz-item__header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin-bottom: 14px;
}

.quiz-item__number {
  width: 2rem;
  height: 2rem;
  border: 1px solid rgba(173, 82, 32, 0.36);
  background: rgba(255, 247, 236, 0.86);
  color: var(--accent);
  font-family: "Newsreader", Georgia, serif;
  font-size: 1rem;
  font-weight: 800;
}

.article-section .quiz-item h3 {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Spline Sans", system-ui, sans-serif;
  font-size: clamp(0.98rem, 1.25vw, 1.1rem);
  line-height: 1.48;
}

.quiz-reset {
  display: inline;
  margin: 0;
  padding: 0 0 2px;
  border: 0;
  border-bottom: 1px dotted rgba(15, 93, 134, 0.28);
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: inherit;
  text-align: left;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, text-shadow 160ms ease;
}

.quiz-reset:hover,
.quiz-reset:focus-visible {
  border-color: rgba(15, 93, 134, 0.72);
  color: var(--signal);
  outline: none;
  text-shadow: 0 8px 18px rgba(15, 93, 134, 0.12);
}

.quiz-options {
  display: grid;
  gap: 10px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.quiz-choice {
  position: relative;
  display: grid;
  gap: 8px;
}

.quiz-choice__input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.quiz-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(16, 38, 59, 0.12);
  border-radius: 18px;
  background: rgba(255, 252, 246, 0.72);
  color: var(--ink-soft);
  font: inherit;
  line-height: 1.58;
  text-align: left;
  user-select: none;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.quiz-option:hover,
.quiz-choice__input:focus-visible + .quiz-option,
.quiz-option:focus-visible {
  border-color: rgba(173, 82, 32, 0.36);
  background: rgba(255, 247, 236, 0.96);
  box-shadow: 0 10px 22px rgba(16, 38, 59, 0.07);
  outline: none;
  transform: translateY(-1px);
}

.quiz-option__marker {
  width: 1.72rem;
  height: 1.72rem;
  border: 1px solid rgba(16, 38, 59, 0.16);
  background: rgba(255, 255, 255, 0.75);
  color: var(--accent);
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.quiz-choice__input:checked + .quiz-option,
.quiz-option.is-selected {
  border-color: rgba(16, 38, 59, 0.28);
  background: rgba(255, 255, 255, 0.92);
}

.quiz-choice__input:checked + .quiz-option--correct,
.quiz-option.is-correct {
  border-color: rgba(48, 118, 87, 0.5);
  box-shadow: 0 12px 26px rgba(48, 118, 87, 0.12);
}

.quiz-choice__input:checked + .quiz-option--correct .quiz-option__marker,
.quiz-option.is-correct .quiz-option__marker {
  border-color: rgba(48, 118, 87, 0.48);
  color: #2f7657;
}

.quiz-choice__input:checked + .quiz-option--incorrect,
.quiz-option.is-incorrect {
  border-color: rgba(173, 82, 32, 0.5);
  box-shadow: 0 12px 26px rgba(173, 82, 32, 0.11);
}

.article-section .quiz-feedback {
  display: none;
  min-height: 1.55em;
  margin-top: 0;
  padding: 10px 12px;
  border-left: 3px solid rgba(16, 38, 59, 0.18);
  border-radius: 14px;
  background: rgba(255, 252, 246, 0.62);
  font-size: 0.92rem;
  line-height: 1.58;
}

.article-section .quiz-feedback:empty {
  display: none;
}

.quiz-choice__input:checked ~ .quiz-feedback {
  display: block;
}

.article-section .quiz-feedback.is-correct {
  border-left-color: rgba(48, 118, 87, 0.62);
  color: #2f7657;
}

.article-section .quiz-feedback.is-incorrect {
  border-left-color: rgba(173, 82, 32, 0.64);
  color: var(--accent);
}

.site-footer {
  margin-top: 30px;
  padding: 26px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-border);
  background: rgba(255, 252, 246, 0.74);
  color: var(--ink-muted);
  line-height: 1.7;
}

.site-footer p {
  margin: 0;
}

.article-outline-slot {
  margin-top: -2px;
}

.muted-label {
  font-size: 0.9rem;
  color: var(--ink-muted);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .layout,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .layout--with-rail,
  .article-layout--with-rail {
    grid-template-areas:
      "rail"
      "main";
  }

  .site-nav {
    position: static;
  }

  .context-rail {
    position: sticky;
    top: 10px;
    right: auto;
    width: auto;
    max-height: none;
    overflow: visible;
    z-index: 8;
  }

  .contributors__grid,
  .approach-grid,
  .feature-grid,
  .route-grid,
  .glossary-grid,
  .taxonomy-grid,
  .structure-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(calc(100% - 20px), var(--max-width));
    margin-top: 10px;
  }

  .hero__content,
  .hero--article .hero__content {
    padding: 32px 22px 34px;
    min-height: auto;
  }

  .hero__content::before {
    inset: 14px;
    width: auto;
    background: linear-gradient(180deg, rgba(7, 22, 34, 0.58), rgba(7, 22, 34, 0.3));
  }

  .hero h1 {
    margin-top: 12px;
    font-size: clamp(2.15rem, 10vw, 3.2rem);
  }

  .notice-card,
  .content-card,
  .taxonomy-card,
  .expansion-card,
  .article-card,
  .prompt-ledger,
  .toc-card,
  .callout-card,
  .structure-card,
  .feature-card,
  .route-card,
  .glossary-card,
  .contributors,
  .article-section {
    padding: 22px 18px;
  }

  .home-panel summary {
    grid-template-columns: auto 1fr;
    padding: 20px 18px;
  }

  .home-panel__cue {
    display: none;
  }

  .home-panel__body {
    padding: 0 18px 22px;
  }

  .landing-search__control {
    grid-template-columns: 1fr;
  }

  .contributors__grid,
  .approach-grid,
  .feature-grid,
  .route-grid,
  .glossary-grid,
  .taxonomy-grid,
  .structure-grid {
    grid-template-columns: 1fr;
  }

  .detail-card .dialogue-turn,
  .detail-card--timeline .dialogue-turn {
    grid-template-columns: 1fr;
  }

  .detail-card .dialogue-turn__speaker {
    width: fit-content;
    min-width: 0;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .quiz-accordion summary {
    gap: 12px;
    padding: 16px 14px;
  }

  .quiz-accordion__heading {
    font-size: clamp(1.28rem, 7.2vw, 1.9rem);
  }

  .quiz-accordion__body {
    padding: 0 14px 16px;
  }

  .quiz-section__badge {
    width: 2.05rem;
    height: 2.05rem;
  }

  .article-section .quiz-section__intro {
    margin-bottom: 16px;
  }

  .quiz-list {
    gap: 14px;
  }

  .quiz-item {
    padding: 14px;
    border-radius: 18px;
  }

  .quiz-item__header {
    gap: 10px;
    margin-bottom: 10px;
  }

  .quiz-item__number {
    width: 1.8rem;
    height: 1.8rem;
    font-size: 0.92rem;
  }

  .article-section .quiz-item h3 {
    font-size: 0.98rem;
    line-height: 1.38;
  }

  .quiz-options {
    gap: 8px;
  }

  .quiz-option {
    gap: 10px;
    padding: 10px 12px;
    border-radius: 16px;
    line-height: 1.5;
  }

  .quiz-option__marker {
    width: 1.56rem;
    height: 1.56rem;
    font-size: 0.78rem;
  }

  .article-section .quiz-feedback {
    padding: 8px 10px;
    border-radius: 12px;
    font-size: 0.88rem;
    line-height: 1.5;
  }

  .context-rail {
    padding: 12px;
    border-radius: 18px;
  }

  .context-rail__title {
    font-size: 1.16rem;
  }

  .context-rail__trail {
    gap: 4px 7px;
    font-size: 0.88rem;
  }

  .context-rail__trail a,
  .context-rail__trail span {
    min-height: 0;
    padding: 0;
  }

  .context-rail__status,
  .context-rail__group summary,
  .context-rail__list {
    padding-left: 9px;
    padding-right: 9px;
  }

  .context-rail__list {
    padding-bottom: 9px;
  }

  .context-rail__mobile-trail {
    font-size: 0.78rem;
  }
}

@media (max-width: 520px) {
  .quiz-accordion summary {
    gap: 10px;
    padding: 14px 12px;
  }

  .quiz-accordion__body {
    padding: 0 12px 14px;
  }

  .quiz-accordion__title {
    gap: 4px;
  }

  .quiz-section__badge {
    width: 1.9rem;
    height: 1.9rem;
    font-size: 0.92rem;
  }

  .article-section .quiz-section__intro {
    margin-bottom: 14px;
  }

  .quiz-list {
    gap: 12px;
  }

  .quiz-item {
    padding: 12px;
    border-radius: 16px;
  }

  .quiz-item__header {
    gap: 8px;
    margin-bottom: 8px;
  }

  .quiz-item__number {
    width: 1.68rem;
    height: 1.68rem;
    font-size: 0.88rem;
  }

  .article-section .quiz-item h3 {
    font-size: 0.94rem;
    line-height: 1.34;
  }

  .quiz-option {
    gap: 8px;
    padding: 9px 10px;
    border-radius: 14px;
  }

  .quiz-option__marker {
    width: 1.48rem;
    height: 1.48rem;
    font-size: 0.74rem;
  }

  .article-section .quiz-feedback {
    padding: 8px 9px;
    font-size: 0.85rem;
  }

  .context-rail {
    top: 8px;
    gap: 8px;
    padding: 10px;
    border-radius: 16px;
  }

  .context-rail__title {
    font-size: 1.06rem;
  }

  .context-rail__trail {
    font-size: 0.82rem;
  }

  .context-rail__status {
    gap: 3px;
    padding: 9px;
  }

  .context-rail__active-link {
    font-size: 0.86rem;
  }

  .context-rail__group summary {
    font-size: 0.74rem;
    padding: 8px 9px;
  }

  .context-rail__link-title {
    font-size: 0.8rem;
  }

  .context-rail__link-meta {
    font-size: 0.64rem;
  }
}

@media (max-width: 760px) {
  .context-rail {
    padding: 0;
    border-radius: 18px;
    overflow: hidden;
  }

  .context-rail__mobile-summary {
    list-style: none;
    cursor: pointer;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
    padding: 12px 14px;
  }

  .context-rail__mobile-summary::-webkit-details-marker {
    display: none;
  }

  .context-rail__body {
    display: none;
    gap: 10px;
    padding: 0 12px 12px;
    border-top: 1px solid rgba(16, 38, 59, 0.08);
    max-height: min(70vh, 34rem);
    overflow: auto;
  }

  .context-rail__shell[open] .context-rail__body {
    display: grid;
  }

  .context-rail__shell[open] .context-rail__mobile-cue {
    transform: rotate(45deg);
  }

  .context-rail__header > .mini-label,
  .context-rail__header > .context-rail__trail,
  .context-rail__header > .context-rail__title {
    display: none;
  }

  .context-rail__status {
    margin-top: 10px;
  }
}