.article-header {
  padding-top: calc(var(--header-height) + clamp(32px, 5vw, 72px));
}

.article-header .container:first-child {
  display: grid;
  gap: var(--space-4);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  color: var(--color-bark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 10px;
  color: var(--color-line);
}

.breadcrumbs a {
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs li:last-child {
  color: var(--color-ink);
}

.article-header h1 {
  max-width: 20ch;
  font-size: clamp(36px, 5.4vw, 80px);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
}

.article-lede {
  max-width: 58ch;
  color: var(--color-bark);
  font-size: clamp(19px, 1.9vw, 25px);
  line-height: 1.45;
}

.article-meta {
  max-width: none;
  color: var(--color-bark);
  font-size: 14px;
}

.article-meta b {
  color: var(--color-ink);
  font-weight: 600;
}

.article-cover {
  margin-top: var(--space-6);
}

.article-cover .photo {
  aspect-ratio: 3 / 2;
}

@media (min-width: 720px) {
  .article-cover .photo {
    aspect-ratio: 2 / 1;
  }
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
  padding-block: var(--space-6) var(--section-space);
}

.article-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  min-width: 0;
}

.toc {
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.toc h2,
.key-points h2 {
  margin-bottom: var(--space-3);
  color: var(--color-ink);
  font: 600 13px/1.2 var(--font-body);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.toc ol {
  display: grid;
  gap: 2px;
  counter-reset: toc;
}

.toc li {
  counter-increment: toc;
}

.toc a {
  display: grid;
  grid-template-columns: 26px 1fr;
  padding: 7px 0;
  color: var(--color-bark);
  font-size: 15px;
  line-height: 1.35;
  text-decoration: none;
}

.toc a::before {
  content: counter(toc, decimal-leading-zero);
  color: var(--color-ink);
  font: 600 12px/1.6 var(--font-display);
}

.toc a:hover {
  color: var(--color-ink);
}

@media (min-width: 1100px) {
  .article-layout {
    grid-template-columns: 280px minmax(0, 760px);
    gap: var(--space-7);
    justify-content: center;
  }

  .toc {
    position: sticky;
    top: calc(var(--header-height) + 32px);
    max-height: calc(100vh - var(--header-height) - 64px);
    padding: 0;
    overflow-y: auto;
    border: 0;
  }
}

.key-points {
  padding: var(--space-5) clamp(20px, 4vw, 40px);
  border-left: 4px solid var(--color-ink);
  border-radius: var(--radius);
  background: var(--color-sprout);
}

.key-points ul {
  display: grid;
  gap: var(--space-3);
}

.key-points li {
  position: relative;
  padding-left: 26px;
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.5;
}

.key-points li::before {
  content: "";
  position: absolute;
  top: .55em;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-ember);
}

.prose {
  font-size: clamp(17px, 1.45vw, 19px);
  line-height: 1.7;
}

.prose > * + * {
  margin-top: var(--space-4);
}

.prose p {
  max-width: none;
}

.prose h2 {
  margin-top: var(--space-6);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.08;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.prose > h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin-top: var(--space-5);
  font-size: clamp(21px, 2vw, 26px);
  font-weight: 600;
  line-height: 1.2;
}

.prose h2 + *,
.prose h3 + * {
  margin-top: var(--space-3);
}

.prose a {
  color: var(--color-ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.prose strong {
  font-weight: 600;
}

.prose code {
  padding: 2px 6px;
  border-radius: var(--radius);
  background: var(--color-surface);
  font-size: .9em;
}

.prose ul,
.prose ol {
  display: grid;
  gap: var(--space-2);
  padding-left: 0;
}

.prose ul > li,
.prose ol > li {
  position: relative;
  padding-left: 30px;
}

.prose ul > li::before {
  content: "";
  position: absolute;
  top: .68em;
  left: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-ember);
}

.prose ol {
  counter-reset: item;
}

.prose ol > li {
  counter-increment: item;
}

.prose ol > li::before {
  content: counter(item);
  position: absolute;
  top: .2em;
  left: 0;
  color: var(--color-ink);
  font: 800 15px/1.6 var(--font-display);
}

.prose blockquote {
  margin-block: var(--space-5);
  padding-top: var(--space-4);
  border-top: 3px solid var(--color-ember);
}

.prose blockquote p {
  font: italic 400 clamp(24px, 2.8vw, 36px)/1.25 var(--font-serif);
  letter-spacing: -.01em;
}

.prose figcaption {
  margin-top: var(--space-2);
  color: var(--color-bark);
  font-size: 14px;
  line-height: 1.45;
}

.callout {
  padding: var(--space-4) clamp(20px, 3vw, 32px);
  border-radius: var(--radius);
  background: var(--color-surface);
  font-size: .94em;
}

.callout > * + * {
  margin-top: var(--space-3);
}

.article-figure {
  margin-block: var(--space-5);
}

.article-figure .photo {
  aspect-ratio: 5 / 3;
}

.table-scroll {
  margin-block: var(--space-5);
  overflow-x: auto;
  border-top: 1px solid var(--color-ink);
}

.prose table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 16px;
  line-height: 1.45;
}

.prose th,
.prose td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.prose thead th {
  border-bottom-color: var(--color-ink);
  color: var(--color-ink);
  font: 600 12px/1.3 var(--font-body);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.prose tbody th {
  width: 24%;
  font: 600 17px/1.3 var(--font-display);
  letter-spacing: -.01em;
}

.prose td {
  color: var(--color-bark);
}

.diagram-flow,
.diagram-matrix {
  margin-block: var(--space-5);
}

.prose .diagram-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4) var(--space-3);
  padding: 0;
  counter-reset: flow;
}

.prose .diagram-flow > li {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: var(--space-3) 0 0;
  border-top: 1px solid var(--color-ink);
  color: var(--color-bark);
  font-size: 15px;
  line-height: 1.45;
  counter-increment: flow;
}

.prose .diagram-flow > li::before {
  content: counter(flow);
  position: static;
  color: var(--color-ink);
  font: 800 15px/1 var(--font-display);
}

.prose .diagram-flow > li::after {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-ember);
}

.prose .diagram-flow b,
.diagram-matrix b {
  color: var(--color-ink);
  font: 600 18px/1.2 var(--font-display);
  letter-spacing: -.02em;
}

.diagram-matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius);
}

.diagram-matrix > div {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-line);
  color: var(--color-bark);
  font-size: 15px;
  line-height: 1.45;
}

.diagram-matrix > div:last-child {
  border-bottom: 0;
}

.diagram-matrix small {
  color: var(--color-ink);
  font: 600 11px/1.3 var(--font-body);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.diagram-matrix .is-highlighted {
  background: var(--color-sprout);
}

@media (min-width: 620px) {
  .diagram-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .diagram-matrix > div:nth-child(odd) {
    border-right: 1px solid var(--color-line);
  }

  .diagram-matrix > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

.prose > .diagram-caption {
  margin-top: calc(var(--space-3) - var(--space-5));
  color: var(--color-bark);
  font-size: 14px;
}

.faq h3 {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
}

.faq h2 + h3 {
  border-top-color: var(--color-ink);
}

.article-cta {
  padding-block: clamp(64px, 9vw, 128px);
  background: var(--color-ink);
  color: var(--color-paper);
}

.article-cta .eyebrow {
  margin-bottom: var(--space-3);
  color: var(--color-ember);
}

.article-cta h2 {
  font-size: clamp(32px, 4.6vw, 64px);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
}

.article-cta .lede {
  color: var(--color-on-ink);
}

.article-cta .lede a {
  color: var(--color-paper);
}

.article-cta-grid {
  display: grid;
  gap: var(--space-5);
}

.article-cta-body {
  display: grid;
  gap: var(--space-5);
  align-content: start;
  justify-items: start;
}

@media (min-width: 1024px) {
  .article-cta-grid {
    grid-template-columns: 6fr 5fr;
    gap: var(--space-7);
    align-items: end;
  }
}

.related {
  background: var(--color-surface);
}

.related-title {
  margin-bottom: var(--space-6);
  font-size: clamp(28px, 3.6vw, 48px);
  font-weight: 800;
  letter-spacing: -.04em;
}

.topic-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.topic-filter-button {
  min-height: 40px;
  padding: 10px 16px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: none;
  color: var(--color-ink);
  font: 500 15px/1.2 var(--font-body);
  cursor: pointer;
}

.topic-filter-button:hover {
  border-color: var(--color-ink);
}

.topic-filter-button[aria-pressed="true"] {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-paper);
}

@media (max-width: 719px) {
  .topic-filter {
    flex-wrap: nowrap;
    margin-inline: calc(-1 * var(--gutter));
    margin-bottom: var(--space-4);
    padding-inline: var(--gutter);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .topic-filter::-webkit-scrollbar {
    display: none;
  }

  .topic-filter-button {
    flex: none;
    min-height: 36px;
    padding: 8px 14px;
    font-size: 14px;
    white-space: nowrap;
  }
}

.archive-list {
  border-top: 1px solid var(--color-ink);
}

.archive-item a {
  display: grid;
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  transition: padding-left .4s var(--ease);
}

.archive-item p {
  color: var(--color-bark);
  font-size: 14px;
}

.archive-item h2 {
  font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1.1;
}

.archive-item a:hover h2 {
  text-decoration: underline;
  text-decoration-color: var(--color-lime);
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

@media (min-width: 860px) {
  .archive-item a {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: var(--space-5);
    align-items: baseline;
  }

  .archive-item a:hover {
    padding-left: 24px;
  }
}