:root {
  color-scheme: light dark;
  --gds-color-bg: #f5f7f6;
  --gds-color-surface: #ffffff;
  --gds-color-surface-soft: #edf1ef;
  --gds-color-text: #15201d;
  --gds-color-text-muted: #52605b;
  --gds-color-border: #cdd6d2;
  --gds-color-border-strong: #87968f;
  --gds-color-brand: #176b56;
  --gds-color-brand-strong: #0f503f;
  --gds-color-brand-soft: #d9eee7;
  --gds-color-focus: #9b4d00;
  --gds-color-warning: #875800;
  --gds-color-warning-soft: #fff0c7;
  --gds-color-danger: #a52a34;
  --gds-color-danger-soft: #ffe5e7;
  --gds-color-info: #275f8a;
  --gds-color-info-soft: #e0effa;
  --gds-color-github: #24292f;
  --gds-color-github-soft: #e9edf1;
  --gds-color-claude: #9c4f2f;
  --gds-color-claude-soft: #f7e5dc;
  --gds-color-codex: #0d7a5f;
  --gds-color-codex-soft: #dff3ec;
  --gds-font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --gds-font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --gds-space-1: 0.25rem;
  --gds-space-2: 0.5rem;
  --gds-space-3: 0.75rem;
  --gds-space-4: 1rem;
  --gds-space-5: 1.5rem;
  --gds-space-6: 2rem;
  --gds-space-7: 3rem;
  --gds-space-8: 4rem;
  --gds-radius-sm: 0.5rem;
  --gds-radius-md: 0.875rem;
  --gds-radius-lg: 1.25rem;
  --gds-shadow-sm: 0 1px 2px rgb(21 32 29 / 0.06), 0 5px 18px rgb(21 32 29 / 0.04);
  --gds-shadow-md: 0 14px 40px rgb(21 32 29 / 0.09);
  --page-width: 76rem;
  --reading-width: 47rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 92% -8%, rgb(23 107 86 / 0.11), transparent 28rem),
    var(--gds-color-bg);
  color: var(--gds-color-text);
  font-family: var(--gds-font-body);
  font-size: 1rem;
  line-height: 1.65;
  text-align: start;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image: linear-gradient(rgb(21 32 29 / 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgb(21 32 29 / 0.025) 1px, transparent 1px);
  background-size: 2rem 2rem;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 70%);
}

a {
  color: var(--gds-color-brand-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

:where(a:any-link, summary):focus-visible {
  border-radius: var(--gds-radius-sm);
  outline: 3px solid var(--gds-color-focus);
  outline-offset: 3px;
}

p,
li,
dd {
  max-width: 76ch;
}

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

code {
  border-radius: 0.32rem;
  background: var(--gds-color-surface-soft);
  padding: 0.08em 0.34em;
  font-family: var(--gds-font-mono);
  font-size: 0.9em;
}

kbd {
  display: inline-block;
  min-width: 1.65em;
  border: 1px solid var(--gds-color-border-strong);
  border-bottom-width: 2px;
  border-radius: 0.3rem;
  background: var(--gds-color-surface);
  padding: 0.06em 0.38em;
  color: var(--gds-color-text);
  font-family: var(--gds-font-mono);
  font-size: 0.86em;
  line-height: 1.4;
  text-align: center;
}

pre {
  overflow-x: auto;
  margin: 0;
  border: 1px solid #3d4d47;
  border-radius: var(--gds-radius-md);
  background: #111b18;
  padding: var(--gds-space-5);
  color: #eaf4f0;
  box-shadow: inset 0 1px rgb(255 255 255 / 0.05);
  line-height: 1.55;
}

pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: 0.9rem;
}

figure {
  margin: var(--gds-space-5) 0;
}

figcaption {
  margin-block-end: var(--gds-space-2);
  color: var(--gds-color-text-muted);
  font-size: 0.84rem;
  font-weight: 680;
}

.visually-hidden:where(:not(:focus-within, :active)) {
  position: absolute !important;
  overflow: hidden !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  border: 0 !important;
  padding: 0 !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  inset-block-start: var(--gds-space-3);
  inset-inline-start: var(--gds-space-3);
  transform: translateY(-180%);
  border-radius: var(--gds-radius-sm);
  background: var(--gds-color-text);
  padding: var(--gds-space-2) var(--gds-space-4);
  color: var(--gds-color-surface);
  font-weight: 700;
}

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

.site-header {
  border-bottom: 1px solid rgb(135 150 143 / 0.45);
  background: rgb(245 247 246 / 0.88);
}

.header-inner,
.page-shell,
.site-footer-inner {
  width: min(calc(100% - 2rem), var(--page-width));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
  gap: var(--gds-space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: var(--gds-space-3);
  color: var(--gds-color-text);
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 0.65rem;
  background: var(--gds-color-text);
  color: white;
  font-family: var(--gds-font-mono);
  font-size: 0.78rem;
  letter-spacing: -0.08em;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin: 0;
  padding: 0;
  gap: var(--gds-space-1);
  list-style: none;
}

.primary-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  border-radius: var(--gds-radius-sm);
  padding: var(--gds-space-2) var(--gds-space-3);
  color: var(--gds-color-text-muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  background: var(--gds-color-surface);
  color: var(--gds-color-text);
  box-shadow: inset 0 0 0 1px var(--gds-color-border);
}

.page-shell {
  padding-block: var(--gds-space-5) var(--gds-space-8);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  margin: 0 0 var(--gds-space-6);
  padding: 0;
  gap: var(--gds-space-2);
  color: var(--gds-color-text-muted);
  font-size: 0.88rem;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-inline-start: var(--gds-space-2);
  color: var(--gds-color-border-strong);
  content: "/";
}

.breadcrumbs a {
  color: inherit;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(17rem, 0.7fr);
  align-items: end;
  padding-block: var(--gds-space-5) var(--gds-space-7);
  gap: var(--gds-space-7);
}

.hero-copy {
  max-width: 53rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  margin: 0 0 var(--gds-space-4);
  gap: var(--gds-space-2);
  color: var(--gds-color-brand-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 1.75rem;
  height: 2px;
  background: currentColor;
  content: "";
}

h1,
h2,
h3 {
  max-width: 30ch;
  margin-block-start: 0;
  color: var(--gds-color-text);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

h1 {
  margin-block-end: var(--gds-space-5);
  font-size: clamp(2.5rem, 7vw, 5.75rem);
  font-weight: 760;
}

.detail-page h1 {
  font-size: clamp(2.5rem, 6vw, 4.8rem);
}

h2 {
  margin-block-end: var(--gds-space-4);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 740;
}

h3 {
  margin-block-end: var(--gds-space-3);
  font-size: 1.2rem;
  font-weight: 730;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0;
  color: var(--gds-color-text-muted);
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  line-height: 1.55;
}

.hero-note {
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-lg);
  background: rgb(255 255 255 / 0.74);
  padding: var(--gds-space-5);
  box-shadow: var(--gds-shadow-sm);
}

.hero-note-label {
  margin: 0 0 var(--gds-space-2);
  color: var(--gds-color-text-muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-note p:last-child {
  margin-bottom: 0;
}

.section {
  margin-block-start: var(--gds-space-8);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.45fr) minmax(20rem, 0.55fr);
  align-items: end;
  margin-block-end: var(--gds-space-6);
  gap: var(--gds-space-6);
}

.section-heading p {
  margin: 0;
  color: var(--gds-color-text-muted);
}

.concept-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gds-space-4);
}

.concept-card {
  display: flex;
  min-height: 24rem;
  flex-direction: column;
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-lg);
  background: var(--gds-color-surface);
  padding: var(--gds-space-5);
  color: var(--gds-color-text);
  box-shadow: var(--gds-shadow-sm);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.concept-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent, var(--gds-color-brand));
  box-shadow: var(--gds-shadow-md);
}

.concept-card.github {
  --accent: var(--gds-color-github);
  --accent-soft: var(--gds-color-github-soft);
}

.concept-card.claude {
  --accent: var(--gds-color-claude);
  --accent-soft: var(--gds-color-claude-soft);
}

.concept-card.codex {
  --accent: var(--gds-color-codex);
  --accent-soft: var(--gds-color-codex-soft);
}

.card-index,
.product-mark {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--gds-font-mono);
  font-size: 0.78rem;
  font-weight: 800;
}

.concept-card h3 {
  margin-block: var(--gds-space-6) var(--gds-space-2);
  font-size: 1.55rem;
}

.concept-card .product {
  margin: 0 0 var(--gds-space-5);
  color: var(--gds-color-text-muted);
  font-size: 0.88rem;
}

.concept-card .mechanism {
  margin: 0;
  color: var(--gds-color-text);
  font-size: 1.08rem;
  line-height: 1.5;
}

.card-link {
  display: inline-flex;
  align-items: center;
  margin-block-start: auto;
  padding-block-start: var(--gds-space-6);
  gap: var(--gds-space-2);
  color: var(--accent);
  font-weight: 740;
}

.card-link::after {
  content: "→";
  transition: transform 160ms ease;
}

.concept-card:hover .card-link::after {
  transform: translateX(0.25rem);
}

.shared-model {
  display: grid;
  grid-template-columns: repeat(7, auto);
  align-items: center;
  justify-content: center;
  overflow-x: auto;
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-lg);
  background: var(--gds-color-surface);
  padding: var(--gds-space-6);
  gap: var(--gds-space-3);
  box-shadow: var(--gds-shadow-sm);
}

.model-step {
  min-width: 8.5rem;
  border-radius: var(--gds-radius-md);
  background: var(--gds-color-surface-soft);
  padding: var(--gds-space-4);
  text-align: center;
}

.model-step strong,
.model-step span {
  display: block;
}

.model-step span {
  margin-block-start: var(--gds-space-1);
  color: var(--gds-color-text-muted);
  font-size: 0.82rem;
}

.model-arrow {
  color: var(--gds-color-border-strong);
  font-size: 1.4rem;
}

.comparison-wrap {
  overflow-x: auto;
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-lg);
  background: var(--gds-color-surface);
  box-shadow: var(--gds-shadow-sm);
}

.comparison-table {
  width: 100%;
  min-width: 54rem;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.comparison-table caption {
  padding: var(--gds-space-4) var(--gds-space-5) 0;
  color: var(--gds-color-text-muted);
  font-size: 0.84rem;
  text-align: start;
}

.comparison-table th,
.comparison-table td {
  border-bottom: 1px solid var(--gds-color-border);
  padding: var(--gds-space-4) var(--gds-space-5);
  text-align: start;
  vertical-align: top;
}

.comparison-table thead th {
  background: var(--gds-color-surface-soft);
  color: var(--gds-color-text);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

.comparison-table tbody th {
  width: 17%;
  color: var(--gds-color-text-muted);
  font-size: 0.85rem;
}

.comparison-table tr:last-child :is(th, td) {
  border-bottom: 0;
}

.table-product {
  display: flex;
  align-items: center;
  gap: var(--gds-space-2);
}

.product-dot {
  width: 0.7rem;
  height: 0.7rem;
  flex: 0 0 auto;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.product-dot.github { color: var(--gds-color-github); }
.product-dot.claude { color: var(--gds-color-claude); }
.product-dot.codex { color: var(--gds-color-codex); }

.decision-grid,
.two-column,
.source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gds-space-4);
}

.decision-card,
.content-panel,
.source-card {
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-md);
  background: var(--gds-color-surface);
  padding: var(--gds-space-5);
  box-shadow: var(--gds-shadow-sm);
}

.decision-card p,
.content-panel p,
.source-card p {
  margin-block-end: 0;
  color: var(--gds-color-text-muted);
}

.decision-card a,
.source-card a {
  display: inline-block;
  margin-block-start: var(--gds-space-3);
  font-weight: 700;
}

.verified-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-start: var(--gds-space-8);
  border-top: 1px solid var(--gds-color-border);
  border-bottom: 1px solid var(--gds-color-border);
  padding-block: var(--gds-space-4);
  gap: var(--gds-space-4);
  color: var(--gds-color-text-muted);
  font-size: 0.88rem;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: var(--gds-space-2);
  font-weight: 700;
}

.status::before {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--gds-color-brand);
  content: "";
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18rem;
  align-items: start;
  gap: var(--gds-space-7);
}

.article-content {
  min-width: 0;
  max-width: var(--reading-width);
}

.article-content > section {
  margin-block-start: var(--gds-space-8);
}

.article-content > section:first-child {
  margin-block-start: 0;
}

.article-content ul,
.article-content ol {
  padding-inline-start: 1.35rem;
}

.article-content li + li {
  margin-block-start: var(--gds-space-2);
}

.toc {
  position: sticky;
  inset-block-start: var(--gds-space-5);
  border-inline-start: 2px solid var(--gds-color-border);
  padding-inline-start: var(--gds-space-4);
}

.toc h2 {
  margin-block-end: var(--gds-space-3);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc li + li {
  margin-block-start: var(--gds-space-2);
}

.toc a {
  color: var(--gds-color-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.toc a:hover {
  color: var(--gds-color-text);
  text-decoration: underline;
}

.lifecycle {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: var(--gds-space-5) 0;
  gap: var(--gds-space-2);
}

.lifecycle-step {
  position: relative;
  min-height: 8rem;
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-md);
  background: var(--gds-color-surface);
  padding: var(--gds-space-4);
}

.lifecycle-step:not(:last-child)::after {
  position: absolute;
  z-index: 1;
  inset-block-start: 50%;
  inset-inline-end: -0.75rem;
  display: grid;
  width: 1.4rem;
  height: 1.4rem;
  place-items: center;
  transform: translateY(-50%);
  border: 1px solid var(--gds-color-border);
  border-radius: 50%;
  background: var(--gds-color-bg);
  color: var(--gds-color-text-muted);
  content: "→";
  font-size: 0.75rem;
}

.lifecycle-step span {
  display: block;
  margin-block-end: var(--gds-space-2);
  color: var(--gds-color-text-muted);
  font-family: var(--gds-font-mono);
  font-size: 0.74rem;
}

.lifecycle-step strong {
  font-size: 0.96rem;
  line-height: 1.35;
}

.callout {
  margin-block: var(--gds-space-6);
  border: 1px solid var(--callout-border, var(--gds-color-border));
  border-inline-start: 0.32rem solid var(--callout-accent, var(--gds-color-info));
  border-radius: var(--gds-radius-md);
  background: var(--callout-bg, var(--gds-color-info-soft));
  padding: var(--gds-space-5);
}

.callout.warning {
  --callout-accent: var(--gds-color-warning);
  --callout-bg: var(--gds-color-warning-soft);
  --callout-border: #e0bd69;
}

.callout.danger {
  --callout-accent: var(--gds-color-danger);
  --callout-bg: var(--gds-color-danger-soft);
  --callout-border: #e7a3a9;
}

.callout p {
  margin: 0;
}

.callout p + p {
  margin-block-start: var(--gds-space-2);
}

.callout-title {
  color: var(--gds-color-text);
  font-weight: 760;
}

.definition-list {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) minmax(0, 1fr);
  margin: 0;
  border-top: 1px solid var(--gds-color-border);
}

.definition-list dt,
.definition-list dd {
  margin: 0;
  border-bottom: 1px solid var(--gds-color-border);
  padding-block: var(--gds-space-4);
}

.definition-list dt {
  padding-inline-end: var(--gds-space-4);
  color: var(--gds-color-text-muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.definition-list dd {
  padding-inline-start: var(--gds-space-4);
}

.fit-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.fit-list li {
  position: relative;
  padding-inline-start: 1.7rem;
}

.fit-list li::before {
  position: absolute;
  inset-inline-start: 0;
  color: var(--gds-color-brand);
  content: "✓";
  font-weight: 800;
}

.fit-list.avoid li::before {
  color: var(--gds-color-danger);
  content: "×";
}

.page-accent-github { --page-accent: var(--gds-color-github); --page-accent-soft: var(--gds-color-github-soft); }
.page-accent-claude { --page-accent: var(--gds-color-claude); --page-accent-soft: var(--gds-color-claude-soft); }
.page-accent-codex { --page-accent: var(--gds-color-codex); --page-accent-soft: var(--gds-color-codex-soft); }

.detail-page .eyebrow,
.detail-page .card-link {
  color: var(--page-accent);
}

.detail-page .product-mark {
  background: var(--page-accent-soft);
  color: var(--page-accent);
}

.detail-hero {
  align-items: center;
}

.detail-hero .hero-note {
  border-top: 0.28rem solid var(--page-accent);
}

.product-command {
  display: inline-block;
  margin-block-end: var(--gds-space-4);
  border-radius: var(--gds-radius-sm);
  background: var(--page-accent-soft);
  padding: var(--gds-space-2) var(--gds-space-3);
  color: var(--page-accent);
  font-family: var(--gds-font-mono);
  font-size: 0.9rem;
  font-weight: 760;
}

.next-pages {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-block-start: var(--gds-space-8);
  gap: var(--gds-space-4);
}

.next-page {
  border: 1px solid var(--gds-color-border);
  border-radius: var(--gds-radius-md);
  background: var(--gds-color-surface);
  padding: var(--gds-space-5);
  color: var(--gds-color-text);
  text-decoration: none;
}

.next-page:hover {
  border-color: var(--gds-color-border-strong);
  box-shadow: var(--gds-shadow-sm);
}

.next-page span,
.next-page strong {
  display: block;
}

.next-page span {
  margin-block-end: var(--gds-space-2);
  color: var(--gds-color-text-muted);
  font-size: 0.8rem;
}

.site-footer {
  border-top: 1px solid var(--gds-color-border);
  background: var(--gds-color-surface-soft);
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 6rem;
  gap: var(--gds-space-5);
  color: var(--gds-color-text-muted);
  font-size: 0.88rem;
}

.site-footer p {
  margin: 0;
}

.site-footer nav ul {
  display: flex;
  margin: 0;
  padding: 0;
  gap: var(--gds-space-4);
  list-style: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --gds-color-bg: #101613;
    --gds-color-surface: #17201c;
    --gds-color-surface-soft: #202b26;
    --gds-color-text: #eef5f2;
    --gds-color-text-muted: #abbab3;
    --gds-color-border: #3b4943;
    --gds-color-border-strong: #809087;
    --gds-color-brand: #59c6a6;
    --gds-color-brand-strong: #7ad9bd;
    --gds-color-brand-soft: #173d32;
    --gds-color-focus: #ffb45f;
    --gds-color-warning: #ffd27b;
    --gds-color-warning-soft: #3d3218;
    --gds-color-danger: #ff9ba3;
    --gds-color-danger-soft: #412126;
    --gds-color-info: #8cc8f5;
    --gds-color-info-soft: #193246;
    --gds-color-github: #d3d9df;
    --gds-color-github-soft: #30363d;
    --gds-color-claude: #f0a889;
    --gds-color-claude-soft: #482b20;
    --gds-color-codex: #62d3b4;
    --gds-color-codex-soft: #173d32;
  }

  body {
    background:
      radial-gradient(circle at 92% -8%, rgb(89 198 166 / 0.12), transparent 28rem),
      var(--gds-color-bg);
  }

  .site-header {
    background: rgb(16 22 19 / 0.9);
  }

  .hero-note {
    background: rgb(23 32 28 / 0.82);
  }
}

@media (max-width: 58rem) {
  .hero,
  .section-heading,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .concept-grid {
    grid-template-columns: 1fr;
  }

  .concept-card {
    min-height: auto;
  }

  .toc {
    position: static;
    grid-row: 1;
    border-inline-start: 0;
    border-bottom: 1px solid var(--gds-color-border);
    padding: 0 0 var(--gds-space-5);
  }

  .toc ol {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gds-space-2) var(--gds-space-4);
  }

  .toc li + li {
    margin-block-start: 0;
  }

  .article-content {
    max-width: none;
  }
}

@media (max-width: 43rem) {
  .header-inner,
  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
    padding-block: var(--gds-space-4);
  }

  .primary-nav ul {
    justify-content: flex-start;
  }

  .primary-nav a {
    padding-inline: var(--gds-space-2);
  }

  .hero {
    padding-block-start: var(--gds-space-3);
    gap: var(--gds-space-5);
  }

  .section,
  .article-content > section,
  .verified-strip {
    margin-block-start: var(--gds-space-7);
  }

  .shared-model {
    grid-template-columns: 1fr;
    justify-items: stretch;
  }

  .model-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .decision-grid,
  .two-column,
  .source-grid,
  .next-pages {
    grid-template-columns: 1fr;
  }

  .lifecycle {
    grid-template-columns: 1fr;
  }

  .lifecycle-step:not(:last-child)::after {
    inset-block-start: auto;
    inset-block-end: -0.75rem;
    inset-inline-end: 50%;
    transform: translateX(50%) rotate(90deg);
  }

  .definition-list {
    grid-template-columns: 1fr;
  }

  .definition-list dt {
    border-bottom: 0;
    padding-block-end: 0;
  }

  .definition-list dd {
    padding-inline-start: 0;
  }

  .verified-strip {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    background: white;
    color: black;
  }

  .site-header,
  .toc,
  .next-pages,
  .site-footer,
  .skip-link {
    display: none;
  }

  .page-shell {
    width: 100%;
    padding: 0;
  }

  .hero,
  .detail-layout {
    display: block;
  }

  .concept-card,
  .content-panel,
  .callout,
  .comparison-wrap {
    break-inside: avoid;
    box-shadow: none;
  }
}