/* Hallmark · macrostructure: Workbench / Long Document · genre: editorial · theme: custom felt/ivory/brass · design-system: design.md · designed-as-app · enrichment: existing gameplay assets · nav: N6 · footer: Ft1 */
/* Hallmark · pre-emit critique: P5 H4 E5 S5 R5 V4 · contrast: pass (40–41) · nav: N6 · footer: Ft1 · static slop: pass (42–49) · static mobile: pass (34, 49–57) */

* { box-sizing: border-box; }

html,
body {
  overflow-x: clip;
  scroll-behavior: smooth;
}

body {
  min-inline-size: 20rem;
  margin: 0;
  background: var(--color-felt-deep);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--body-weight);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

[dir="rtl"] body { font-family: var(--font-rtl); }
body, button, input, select { letter-spacing: 0; }
button, input, select { font: inherit; }
button, select { cursor: pointer; }
a { color: inherit; }
img { display: block; max-inline-size: 100%; }
[hidden] { display: none !important; }

h1,
h2,
h3,
p {
  min-inline-size: 0;
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin-block-start: 0;
  font-family: var(--font-display);
  font-style: normal;
  font-weight: var(--display-weight);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}

p { text-wrap: pretty; }
main { background: var(--color-paper); color: var(--color-ink); }

.content-width,
.header-inner,
.footer-inner {
  inline-size: min(var(--content-wide), calc(100% - var(--space-lg)));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: clip;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 100;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  transform: translateY(-200%);
  padding: var(--space-xs) var(--space-sm);
  border: var(--rule-fine) solid var(--color-focus);
  border-radius: var(--radius-button);
  background: var(--color-felt-deep);
  color: var(--color-ivory);
  font-weight: 750;
  text-decoration: none;
}

.skip-link:focus-visible { transform: translateY(0); }

a,
button,
input,
select {
  outline: var(--rule-fine) solid var(--color-clear);
  outline-offset: var(--rule-hair);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline-color: var(--color-focus);
}

.site-header a:focus-visible,
.site-header button:focus-visible,
.site-header select:focus-visible,
.hero a:focus-visible,
.section.alt a:focus-visible,
.conversion-band a:focus-visible,
.site-footer a:focus-visible {
  outline-color: var(--color-focus-on-dark);
}

button:disabled,
select:disabled,
input:disabled,
[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.52;
}

button[data-state="loading"],
.button-link[data-state="loading"] {
  cursor: progress;
  opacity: 0.68;
  pointer-events: none;
}

button[data-state="error"],
.button-link[data-state="error"],
input[aria-invalid="true"],
input[data-state="error"],
select[aria-invalid="true"],
select[data-state="error"] {
  border-color: var(--color-velvet-strong);
}

button[data-state="success"],
.button-link[data-state="success"],
input[data-state="success"],
select[data-state="success"] {
  border-color: var(--color-brass);
}

/* N6 masthead */
.site-header {
  position: sticky;
  z-index: 50;
  inset-block-start: 0;
  border-block-end: var(--rule-hair) solid var(--color-line-on-dark);
  background: var(--color-felt-deep);
  color: var(--color-ivory);
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: var(--space-xs);
  padding-block: var(--space-xs);
}

.brand {
  display: inline-flex;
  grid-column: 1;
  align-items: center;
  min-block-size: 3rem;
  gap: var(--space-xs);
  min-inline-size: 0;
  color: var(--color-ivory);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: normal;
  font-weight: var(--display-weight);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  inline-size: 2.25rem;
  block-size: 2.25rem;
  border: var(--rule-hair) solid var(--color-brass);
  border-radius: 50%;
  object-fit: cover;
}

.brand:hover,
.brand:active { color: var(--color-brass-soft); }

.language-picker {
  display: inline-flex;
  grid-column: 2;
  align-items: center;
  gap: var(--space-2xs);
  min-inline-size: 0;
  color: var(--color-brass-soft);
  font-size: var(--text-xs);
  font-weight: 750;
  white-space: nowrap;
}

.language-picker > span {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: clip;
  clip-path: inset(50%);
  white-space: nowrap;
}

.language-picker select {
  min-block-size: 3rem;
  max-inline-size: 7.25rem;
  padding-inline: var(--space-xs);
  border: var(--rule-hair) solid var(--color-line-on-dark);
  border-radius: var(--radius-input);
  background: var(--color-charcoal);
  color: var(--color-ivory);
}

.language-picker select:hover,
.language-picker select:active { border-color: var(--color-brass); }

.menu-toggle {
  display: grid;
  grid-column: 3;
  inline-size: 3rem;
  block-size: 3rem;
  place-items: center;
  padding: 0;
  border: var(--rule-hair) solid var(--color-line-on-dark);
  border-radius: var(--radius-button);
  background: var(--color-charcoal);
  color: var(--color-ivory);
}

.menu-toggle svg {
  fill: var(--color-clear);
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.7;
}

.site-nav {
  display: none;
  grid-column: 1 / -1;
  gap: 0;
  margin-inline: calc(var(--space-sm) * -1);
  padding-inline: var(--space-sm);
  border-block-start: var(--rule-hair) solid var(--color-line-on-dark);
}

.site-nav[data-open="true"] { display: grid; }

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-block-size: 3rem;
  border-block-end: var(--rule-hair) solid var(--color-line-on-dark);
  color: var(--color-ivory);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a:last-child { border-block-end: 0; }
.site-nav a[aria-current="page"],
.site-nav a:hover,
.site-nav a:active { color: var(--color-brass-soft); }

/* Workbench home */
.hero {
  position: relative;
  isolation: isolate;
  overflow: clip;
  background-color: var(--color-felt);
  background-image: url("/assets/heritage-felt.jpg");
  background-position: center;
  background-size: cover;
  color: var(--color-ivory);
}

.hero::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: var(--color-overlay);
  content: "";
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xl);
  min-block-size: min(48rem, 100svh);
  padding-block: var(--space-3xl) 0;
}

.hero-copy {
  align-self: center;
  max-inline-size: 41rem;
  padding-block-end: var(--space-md);
  border-block-start: var(--rule-hair) solid var(--color-line-on-dark);
}

.hero h1 {
  max-inline-size: 12ch;
  margin: var(--space-md) 0 0;
  color: var(--color-ivory);
  font-size: var(--text-display);
  line-height: 0.98;
}

.hero-copy > p {
  max-inline-size: 38rem;
  margin: var(--space-lg) 0 0;
  color: var(--color-paper-2);
  font-size: var(--text-md);
}

.hero-actions,
.conversion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-block-start: var(--space-xl);
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: 3.25rem;
  padding-inline: var(--space-md);
  border: var(--rule-hair) solid var(--color-brass);
  border-radius: var(--radius-button);
  background: var(--color-velvet);
  color: var(--color-ivory);
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out);
}

.button-link:hover,
.button-link:active { background: var(--color-velvet-strong); }

.button-link.secondary {
  background: var(--color-charcoal);
  color: var(--color-ivory);
}

.button-link.secondary:hover,
.button-link.secondary:active { background: var(--color-charcoal-2); }

.hero__next {
  display: inline-flex;
  align-items: center;
  min-block-size: 3rem;
  gap: var(--space-xs);
  margin-block-start: var(--space-lg);
  color: var(--color-brass-soft);
  font-size: var(--text-sm);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.hero__next span { font-size: var(--text-lg); }

.hero__next:hover,
.hero__next:active {
  text-decoration: underline;
  text-decoration-color: var(--color-brass);
  text-decoration-thickness: var(--rule-fine);
  text-underline-offset: var(--space-2xs);
}

.hero-product {
  justify-self: center;
  inline-size: min(100%, 25rem);
  margin: 0;
  padding-inline: var(--space-sm);
}

.device-frame {
  overflow: clip;
  border: var(--rule-hair) solid var(--color-line-on-dark);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--color-charcoal);
  box-shadow: var(--shadow-strong);
}

.device-frame img { inline-size: 100%; block-size: auto; }

/* Shared reading surfaces */
.section {
  padding-block: var(--space-3xl);
  background: var(--color-paper);
  color: var(--color-ink);
}

.section.compact { padding-block-start: var(--space-xl); }

.section.alt {
  position: relative;
  overflow: clip;
  border-block: var(--rule-hair) solid var(--color-line-on-dark);
  background-color: var(--color-felt-deep);
  background-image: url("/assets/heritage-felt.jpg");
  background-position: center;
  background-size: cover;
  color: var(--color-ivory);
}

.section.alt::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  background: var(--color-overlay);
  content: "";
}

.section.alt > * { position: relative; z-index: 1; }

.section-heading {
  max-inline-size: var(--content-reading);
  margin-block-end: var(--space-xl);
}

.section-heading h2 {
  margin: 0;
  font-size: var(--text-3xl);
  line-height: 1.04;
}

.section-heading p {
  margin: var(--space-sm) 0 0;
  color: var(--color-muted);
  font-size: var(--text-md);
}

.section.alt .section-heading p { color: var(--color-paper-2); }

#learning-path { position: relative; }

#learning-path::before {
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  block-size: var(--rule-fine);
  background: var(--color-brass);
  content: "";
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.feature {
  display: grid;
  align-content: start;
  gap: var(--space-sm);
  padding: var(--space-xl) 0;
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.feature-mark {
  color: var(--color-velvet);
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--display-weight);
  line-height: 1;
}

.feature h3 {
  margin: 0;
  font-size: var(--text-xl);
  line-height: 1.08;
}

.feature p {
  max-inline-size: 37rem;
  margin: 0;
  color: var(--color-muted);
}

.learning-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xl);
}

.learning-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-block-start: var(--rule-hair) solid var(--color-line-on-dark);
  list-style: none;
}

.learning-list li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-sm);
  padding-block: var(--space-md);
  border-block-end: var(--rule-hair) solid var(--color-line-on-dark);
}

.learning-list span {
  color: var(--color-brass-soft);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--display-weight);
  line-height: 1;
}

.learning-list a {
  color: var(--color-ivory);
  font-size: var(--text-md);
  font-weight: 750;
  text-decoration-color: var(--color-brass);
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: var(--space-2xs);
}

.learning-list a:hover,
.learning-list a:active { color: var(--color-brass-soft); }

.latest-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.latest-secondary { display: grid; gap: 0; }

.article-card {
  display: flex;
  flex-direction: column;
  min-inline-size: 0;
  padding: var(--space-xl) 0;
  border-block-end: var(--rule-hair) solid var(--color-rule);
  background: var(--color-paper);
  color: var(--color-ink);
}

.article-card.featured {
  padding: var(--space-xl);
  background: var(--color-charcoal);
  color: var(--color-ivory);
}

.article-card h2,
.article-card h3 {
  max-inline-size: 31rem;
  margin: var(--space-sm) 0;
  font-size: var(--text-2xl);
  line-height: 1.08;
}

.article-card.featured h2,
.article-card.featured h3 { font-size: var(--text-3xl); }

.article-card h2 a,
.article-card h3 a { text-decoration: none; }

.article-card h2 a:hover,
.article-card h2 a:active,
.article-card h3 a:hover,
.article-card h3 a:active { color: var(--color-velvet); }

.article-card.featured h2 a:hover,
.article-card.featured h2 a:active,
.article-card.featured h3 a:hover,
.article-card.featured h3 a:active { color: var(--color-brass-soft); }

.article-card > p:not(.article-meta) {
  max-inline-size: 40rem;
  margin: 0;
  color: var(--color-muted);
}

.article-card.featured > p:not(.article-meta) { color: var(--color-paper-2); }

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
  font-weight: 750;
}

.article-card.featured .article-meta { color: var(--color-brass-soft); }

.card-link,
.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-block-size: 3rem;
  color: var(--color-velvet);
  font-size: var(--text-sm);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.article-card .card-link { margin-block-start: var(--space-md); }

.article-card.featured .card-link,
.conversion-actions .text-link { color: var(--color-brass-soft); }

.card-link:hover,
.card-link:active,
.text-link:hover,
.text-link:active {
  text-decoration: underline;
  text-decoration-color: currentColor;
  text-decoration-thickness: var(--rule-fine);
  text-underline-offset: var(--space-2xs);
}

.section-action { margin: var(--space-xl) 0 0; }

.section-action .button-link.secondary {
  background: var(--color-paper);
  color: var(--color-ink);
}

.section-action .button-link.secondary:hover,
.section-action .button-link.secondary:active { background: var(--color-paper-2); }

/* CTA and mast footer */
.conversion-band {
  background: var(--color-felt);
  color: var(--color-ivory);
}

.conversion-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: center;
  padding-block: var(--space-2xl);
}

.conversion-inner h2 {
  max-inline-size: 27rem;
  margin: 0;
  font-size: var(--text-3xl);
  line-height: 1.05;
}

.conversion-inner p {
  max-inline-size: 42rem;
  margin: var(--space-sm) 0 0;
  color: var(--color-paper-2);
}

.conversion-actions { margin: 0; }
.conversion-actions .button-link { background: var(--color-velvet); }

.site-footer {
  border-block-start: var(--rule-fine) solid var(--color-brass);
  background: var(--color-felt-deep);
  color: var(--color-ivory);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2xl);
  padding-block: var(--space-3xl) var(--space-xl);
}

.footer-about,
.footer-network,
.footer-meta { min-inline-size: 0; }

.footer-brand { font-size: var(--text-3xl); }

.footer-about > p {
  max-inline-size: 32rem;
  margin: var(--space-sm) 0 0;
  color: var(--color-paper-2);
}

.owner-attribution,
.site-language-note,
.footer-meta > p {
  color: var(--color-brass-soft) !important;
  font-size: var(--text-xs);
}

.owner-link {
  text-decoration-color: var(--color-brass);
  text-underline-offset: var(--space-2xs);
}

.owner-link:hover,
.owner-link:active { color: var(--color-ivory); }

.footer-network {
  padding-block: var(--space-sm);
  border-block: var(--rule-hair) solid var(--color-line-on-dark);
}

.footer-network-label {
  display: block;
  margin-block-end: var(--space-sm);
  color: var(--color-brass-soft);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.footer-network-cards,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
}

.footer-network-card,
.footer-nav a {
  display: inline-flex;
  align-items: center;
  min-block-size: 3rem;
  color: var(--color-ivory);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.footer-network-card:hover,
.footer-network-card:active,
.footer-nav a:hover,
.footer-nav a:active { color: var(--color-brass-soft); }

.footer-meta > p { margin: var(--space-md) 0 0; }

/* Long Document content */
.breadcrumbs {
  padding-block: var(--space-lg) var(--space-xs);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-inline-size: 0;
}

.breadcrumbs li:not(:last-child)::after {
  color: var(--color-rule-2);
  content: "/";
}

.breadcrumbs a {
  display: inline-flex;
  align-items: center;
  min-block-size: 3rem;
  text-decoration-color: var(--color-brass);
  text-underline-offset: var(--space-2xs);
  white-space: nowrap;
}

.breadcrumbs a:hover,
.breadcrumbs a:active { color: var(--color-velvet); }

.editorial-hero {
  max-inline-size: var(--content-article);
  padding-block: var(--space-xl) var(--space-2xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.eyebrow {
  margin: 0 0 var(--space-sm);
  color: var(--color-velvet);
  font-size: var(--text-xs);
  font-weight: 850;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.editorial-hero h1,
.article-header h1 {
  max-inline-size: 16ch;
  margin: 0;
  font-size: var(--text-display-s);
  line-height: 1.01;
}

.editorial-hero > p:not(.eyebrow) {
  max-inline-size: 42rem;
  margin: var(--space-md) 0 0;
  color: var(--color-muted);
  font-size: var(--text-md);
}

.article-catalog {
  max-inline-size: var(--content-article);
  padding-block-end: var(--space-xl);
}

.article-catalog > .article-card.featured { margin-block-end: var(--space-xl); }

.article-index-list {
  margin: 0;
  padding: 0;
  border-block-start: var(--rule-hair) solid var(--color-rule);
  list-style: none;
}

.article-index-row {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  gap: var(--space-sm);
  align-items: start;
  padding-block: var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.article-index {
  color: var(--color-velvet);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--display-weight);
  line-height: 1;
}

.article-index-copy h2 {
  margin: var(--space-2xs) 0 var(--space-xs);
  font-size: var(--text-xl);
  line-height: 1.1;
}

.article-index-copy h2 a { text-decoration: none; }

.article-index-copy h2 a:hover,
.article-index-copy h2 a:active { color: var(--color-velvet); }

.article-index-copy > p:not(.article-meta) {
  max-inline-size: 45rem;
  margin: 0;
  color: var(--color-muted);
}

.article-index-row > .card-link {
  inline-size: 3rem;
  padding: 0;
  justify-content: center;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-button);
  color: var(--color-ink);
}

.article-index-row > .card-link:hover,
.article-index-row > .card-link:active {
  border-color: var(--color-brass);
  text-decoration: none;
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-block-start: var(--rule-hair) solid var(--color-line-on-dark);
}

.section.alt .article-card {
  border-color: var(--color-line-on-dark);
  background: var(--color-clear);
  color: var(--color-ivory);
}

.section.alt .article-card > p:not(.article-meta) { color: var(--color-paper-2); }
.section.alt .article-card h2 a,
.section.alt .article-card h3 a { color: var(--color-ivory); }
.section.alt .article-card h2 a:hover,
.section.alt .article-card h2 a:active,
.section.alt .article-card h3 a:hover,
.section.alt .article-card h3 a:active { color: var(--color-brass-soft); }
.section.alt .article-card .card-link { color: var(--color-brass-soft); }

.article-shell {
  max-inline-size: var(--content-article);
  padding-block: var(--space-xl) var(--space-3xl);
}

.article-header {
  max-inline-size: var(--content-reading);
  padding-block-end: var(--space-xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.article-deck {
  max-inline-size: 40rem;
  margin: var(--space-md) 0 0;
  color: var(--color-muted);
  font-size: var(--text-md);
}

.article-header .article-meta { margin-block-start: var(--space-lg); }

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xl);
  padding-block-start: var(--space-xl);
}

.article-toc {
  align-self: start;
  padding-block-end: var(--space-md);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.article-toc strong {
  display: block;
  margin-block-end: var(--space-xs);
  color: var(--color-velvet);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.article-toc ol {
  display: grid;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: toc;
}

.article-toc li { counter-increment: toc; }

.article-toc a {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  align-items: center;
  min-block-size: 3rem;
  gap: var(--space-2xs);
  color: var(--color-muted);
  font-size: var(--text-sm);
  text-decoration: none;
}

.article-toc a::before {
  color: var(--color-velvet);
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-display);
}

.article-toc a:hover,
.article-toc a:active { color: var(--color-velvet); }

.article-copy {
  min-inline-size: 0;
  max-inline-size: var(--content-reading);
}

.article-copy p {
  margin: 0;
  color: var(--color-ink-2);
  font-size: var(--text-md);
  line-height: 1.75;
}

.article-copy p + p { margin-block-start: var(--space-md); }

.article-copy .article-intro {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.42;
}

.article-copy section {
  scroll-margin-block-start: 8rem;
  padding-block: var(--space-xl) 0;
}

.article-copy h2,
.related-terms h2 {
  max-inline-size: 25rem;
  margin: 0 0 var(--space-sm);
  font-size: var(--text-2xl);
  line-height: 1.12;
}

.guidance-note {
  margin-block-start: var(--space-xl) !important;
  padding: var(--space-md);
  border-inline-start: var(--rule-fine) solid var(--color-brass);
  background: var(--color-paper-2);
  color: var(--color-ink-2) !important;
  font-size: var(--text-base) !important;
}

.article-conclusion {
  margin-block-start: var(--space-2xl) !important;
  padding-block-start: var(--space-md);
  border-block-start: var(--rule-fine) solid var(--color-brass);
  color: var(--color-ink) !important;
  font-family: var(--font-display);
  font-size: var(--text-lg) !important;
  line-height: 1.45 !important;
}

.related-terms { border-block-start: var(--rule-hair) solid var(--color-rule); }

.related-terms ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-terms a {
  color: var(--color-velvet);
  font-weight: 750;
  text-decoration-color: var(--color-brass);
  text-underline-offset: var(--space-2xs);
}

.related-terms a:hover,
.related-terms a:active { color: var(--color-ink); }

/* Glossary, download, and legal */
.glossary-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-sm);
  padding-block: var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.glossary-tools label {
  color: var(--color-velvet);
  font-size: var(--text-xs);
  font-weight: 850;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.glossary-tools input {
  min-block-size: 3rem;
  inline-size: 100%;
  padding-inline: var(--space-sm);
  border: var(--rule-hair) solid var(--color-rule-2);
  border-radius: var(--radius-input);
  background: var(--color-paper);
  color: var(--color-ink);
}

.glossary-tools input::placeholder { color: var(--color-muted); }

.alphabet-index {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
}

.alphabet-index a {
  display: grid;
  inline-size: 3rem;
  block-size: 3rem;
  place-items: center;
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-button);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: var(--display-weight);
  text-decoration: none;
}

.alphabet-index a:hover,
.alphabet-index a:active {
  border-color: var(--color-brass);
}

.empty-state { margin: 0; color: var(--color-muted); }
.glossary-list { padding-block: var(--space-lg) var(--space-3xl); }

.glossary-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.glossary-group > h2 {
  margin: 0;
  padding-block: var(--space-lg) var(--space-sm);
  color: var(--color-velvet);
  font-size: var(--text-3xl);
  line-height: 1;
}

.glossary-group dl { margin: 0; }

.glossary-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xs);
  padding-block: var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.glossary-entry dt {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--display-weight);
}

.glossary-entry dd,
.glossary-entry p { margin: 0; }

.glossary-entry dd {
  display: grid;
  gap: var(--space-xs);
  color: var(--color-muted);
}

.term-example { color: var(--color-ink-2); }
.term-links { font-size: var(--text-sm); }

.term-links a {
  color: var(--color-velvet);
  font-weight: 750;
  text-decoration-color: var(--color-brass);
  text-underline-offset: var(--space-2xs);
}

.term-links a:hover,
.term-links a:active { color: var(--color-ink); }

.platform-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.platform-card {
  padding-block: var(--space-xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.platform-icon { display: none; }

.platform-card h2 {
  margin: 0;
  font-size: var(--text-2xl);
}

.platform-card p,
.integrity-note {
  max-inline-size: 40rem;
  color: var(--color-muted);
}

.platform-card p { margin: var(--space-xs) 0 0; }

.availability {
  display: block;
  margin-block-start: var(--space-md);
  color: var(--color-velvet);
  font-size: var(--text-sm);
  font-weight: 800;
}

.integrity-note {
  margin-block: var(--space-xl) 0;
  padding-inline-start: var(--space-md);
  border-inline-start: var(--rule-fine) solid var(--color-brass);
}

.legal-notice {
  max-inline-size: var(--content-reading) !important;
  margin-block-start: var(--space-lg) !important;
  padding-inline-start: var(--space-md);
  border-inline-start: var(--rule-fine) solid var(--color-brass);
  color: var(--color-ink-2) !important;
  font-size: var(--text-base) !important;
}

.legal-copy {
  max-inline-size: var(--content-reading);
  padding-block: var(--space-lg) var(--space-3xl);
}

.legal-copy section {
  scroll-margin-block-start: 8rem;
  padding-block: var(--space-xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.legal-copy h2 {
  max-inline-size: 28rem;
  margin: 0 0 var(--space-sm);
  font-size: var(--text-2xl);
  line-height: 1.15;
}

.legal-copy p {
  margin: 0;
  color: var(--color-ink-2);
  font-size: var(--text-md);
  line-height: 1.75;
}

@media (min-width: 40rem) {
  .content-width,
  .header-inner,
  .footer-inner {
    inline-size: min(var(--content-wide), calc(100% - var(--space-2xl)));
  }

  .hero-inner { padding-block-start: var(--space-4xl); }

  .article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-xl);
  }

  .article-grid .article-card:nth-child(2) {
    border-inline-start: var(--rule-hair) solid var(--color-line-on-dark);
    padding-inline-start: var(--space-xl);
  }

  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-xl);
  }

  .platform-card + .platform-card {
    border-inline-start: var(--rule-hair) solid var(--color-rule);
    padding-inline-start: var(--space-xl);
  }

  .glossary-entry {
    grid-template-columns: minmax(11rem, 0.55fr) minmax(0, 1.45fr);
    gap: var(--space-xl);
  }
}

@media (min-width: 60rem) {
  .site-header { border-block-end: 0; }

  .header-inner {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 0;
    padding-block: var(--space-sm) var(--space-xs);
  }

  .brand {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    font-size: var(--text-2xl);
  }

  .brand img {
    inline-size: 2.75rem;
    block-size: 2.75rem;
  }

  .language-picker {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
  }

  .language-picker > span {
    position: static;
    inline-size: auto;
    block-size: auto;
    overflow: visible;
    clip-path: none;
  }

  .menu-toggle { display: none; }

  .site-nav {
    display: flex;
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: center;
    gap: var(--space-lg);
    margin: var(--space-sm) 0 0;
    padding: var(--space-xs) 0 0;
    border-block-start: var(--rule-hair) solid var(--color-line-on-dark);
    border-block-end: var(--rule-fine) double var(--color-line-on-dark);
  }

  .site-nav a {
    min-block-size: 3rem;
    border-block-end: var(--rule-fine) solid var(--color-clear);
    color: var(--color-paper-2);
  }

  .site-nav a:hover,
  .site-nav a:active,
  .site-nav a[aria-current="page"] {
    border-block-end-color: var(--color-brass);
  }

  .site-nav a[aria-current="page"] {
    color: var(--color-ivory);
  }

  .hero-inner {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: var(--space-2xl);
    min-block-size: min(44rem, calc(100svh - 8.5rem));
    padding-block: var(--space-3xl) 0;
  }

  .hero-copy { padding-block-end: var(--space-2xl); }

  .hero-product {
    align-self: end;
    justify-self: end;
    inline-size: min(100%, 28rem);
    padding-inline: 0;
  }

  .section { padding-block: var(--space-4xl); }

  .feature-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .feature { padding: var(--space-xl); }

  .feature:first-child {
    grid-row: span 2;
    padding: var(--space-2xl);
    border-inline-end: var(--rule-hair) solid var(--color-rule);
    background: var(--color-paper-2);
  }

  .feature:first-child h3 { font-size: var(--text-2xl); }

  .learning-layout {
    grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
    gap: var(--space-3xl);
  }

  .learning-layout .section-heading {
    position: sticky;
    inset-block-start: 10rem;
    align-self: start;
  }

  .latest-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .latest-layout > .article-card.featured { min-block-size: 31rem; }

  .latest-secondary {
    padding-inline-start: var(--space-xl);
    border-inline-start: var(--rule-hair) solid var(--color-rule);
  }

  .conversion-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2xl);
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr) minmax(0, 0.9fr);
    gap: var(--space-xl);
  }

  .footer-network {
    padding-inline: var(--space-xl);
    border-block: 0;
    border-inline: var(--rule-hair) solid var(--color-line-on-dark);
  }

  .article-layout {
    grid-template-columns: minmax(12rem, 0.42fr) minmax(0, 1fr);
    gap: var(--space-2xl);
  }

  .article-toc {
    position: sticky;
    inset-block-start: 10rem;
  }

  .glossary-tools {
    grid-template-columns: minmax(12rem, 0.45fr) minmax(0, 1fr);
    column-gap: var(--space-xl);
    align-items: end;
  }

  .glossary-tools label {
    grid-column: 1;
    grid-row: 1;
  }

  .glossary-tools input {
    grid-column: 1;
    grid-row: 2;
  }

  .alphabet-index {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
  }

  .glossary-group {
    grid-template-columns: minmax(8rem, 0.25fr) minmax(0, 1fr);
  }

  .glossary-group > h2 { padding-inline-end: var(--space-xl); }

  .glossary-group dl { border-inline-start: var(--rule-hair) solid var(--color-rule); }
  .glossary-entry { padding-inline-start: var(--space-xl); }
}

@media (min-width: 90rem) {
  .hero-inner {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }

  .hero-product { inline-size: 30rem; }
  .section-heading h2 { font-size: var(--text-4xl); }
}

@media (prefers-reduced-motion: reduce) {
  html,
  body { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .conversion-band,
  .breadcrumbs,
  .article-toc { display: none !important; }

  body,
  main,
  .section,
  .section.alt {
    background: var(--color-paper) !important;
    color: var(--color-ink) !important;
  }

  .article-shell,
  .legal-copy {
    inline-size: 100%;
    max-inline-size: none;
    padding: 0;
  }
}