.blog-article-shell {
  background:
    radial-gradient(circle at 16% 6%, rgba(54, 112, 92, 0.11), transparent 28rem),
    linear-gradient(180deg, rgba(248, 250, 247, 0.98), rgba(255, 255, 255, 1) 26rem),
    var(--bg-canvas-marketing, #f8fafc);
  color: var(--text-primary, #111827);
}

.blog-article-shell .landing-container {
  width: min(100% - (var(--gutter, 24px) * 2), 1180px);
}

.blog-article-shell [data-reveal] {
  opacity: 1;
  transform: none;
  filter: none;
}

.blog-article-shell .skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  transform: translateY(-150%);
  padding: 0.65rem 0.9rem;
  border-radius: 0.5rem;
  background: var(--text-primary, #111827);
  color: #fff;
  text-decoration: none;
}

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

.reading-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 999;
  width: 0;
  height: 3px;
  background: var(--accent, #2563eb);
  transform-origin: left center;
  transition: width 120ms linear;
}

.article-nav .nav-links {
  gap: clamp(1.1rem, 2.5vw, 2rem);
}

.article-nav .nav-actions {
  margin-left: 0.25rem;
}

.article-nav .nav-links .is-active {
  color: var(--accent, #36705c);
}

.article-hero {
  display: block;
  max-width: 820px;
  padding-top: clamp(2.25rem, 5vw, 3.75rem);
  padding-bottom: clamp(1.35rem, 3vw, 2.1rem);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-tertiary, #64748b);
  font-size: 0.92rem;
}

.breadcrumbs a {
  color: inherit;
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent, #2563eb);
}

.article-hero h1 {
  max-width: 24ch;
  margin: 0.75rem 0 1.25rem;
  font-family: var(--font-display, inherit);
  font-size: clamp(2rem, 3.7vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

.article-description {
  max-width: 43rem;
  color: var(--text-secondary, #475569);
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  line-height: 1.65;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.article-meta span {
  border: 1px solid var(--border, #dbe3ef);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  padding: 0.42rem 0.72rem;
  color: var(--text-secondary, #475569);
  font-size: 0.88rem;
}

.article-visual-section {
  display: grid;
  grid-template-columns: minmax(15rem, 0.64fr) minmax(24rem, 1fr);
  gap: clamp(1.25rem, 3.2vw, 2.4rem);
  align-items: center;
  margin-top: 0.5rem;
  margin-bottom: clamp(2.25rem, 5vw, 4rem);
  border: 1px solid rgba(54, 112, 92, 0.16);
  border-radius: 1rem;
  background:
    radial-gradient(circle at 86% 18%, rgba(54, 112, 92, 0.1), transparent 17rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(244, 249, 246, 0.88)),
    var(--bg-surface, #fff);
  box-shadow: 0 18px 46px rgba(32, 60, 51, 0.07);
  padding: clamp(1.1rem, 3vw, 1.6rem);
}

.article-visual-copy {
  padding: clamp(0.4rem, 2vw, 1rem);
}

.article-visual-copy h2 {
  max-width: 18ch;
  margin: 0.5rem 0 0.8rem;
  font-family: var(--font-display, inherit);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  line-height: 1.05;
  text-wrap: balance;
}

.article-visual-copy p:not(.eyebrow) {
  max-width: 31rem;
  margin: 0;
  color: var(--text-secondary, #475569);
  line-height: 1.68;
}

.article-visual {
  position: relative;
  margin: 0;
  border: 1px solid rgba(54, 112, 92, 0.16);
  border-radius: 0.9rem;
  background:
    radial-gradient(circle at 55% 44%, rgba(54, 112, 92, 0.09), transparent 9rem),
    linear-gradient(145deg, #ffffff, #f4f8f5);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.85),
    0 14px 34px rgba(32, 60, 51, 0.06);
  overflow: hidden;
}

.article-visual figcaption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.visual-canvas {
  position: relative;
  min-height: 16.5rem;
  isolation: isolate;
  background:
    linear-gradient(90deg, rgba(54, 112, 92, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(54, 112, 92, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
}

.visual-framework .visual-canvas {
  background:
    linear-gradient(90deg, rgba(54, 112, 92, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(54, 112, 92, 0.07) 1px, transparent 1px),
    radial-gradient(circle at 18% 20%, rgba(54, 112, 92, 0.1), transparent 8rem);
  background-size: 46px 46px, 46px 46px, auto;
}

.visual-timeline .visual-canvas {
  background:
    linear-gradient(90deg, transparent 0 8%, rgba(54, 112, 92, 0.14) 8% 8.4%, transparent 8.4% 100%),
    linear-gradient(#fff, #f5f9f7);
}

.visual-comparison .visual-canvas {
  background:
    linear-gradient(90deg, rgba(54, 112, 92, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(54, 112, 92, 0.08) 1px, transparent 1px),
    linear-gradient(135deg, #ffffff, #f8faf8);
  background-size: 50% 100%, 100% 50%, auto;
}

/* Inline teaching diagrams authored inside post markdown and passed through
   verbatim by renderMarkdown's <figure> handler. Each SVG is a self-contained
   opaque light card (own background), so it reads on any page background and
   needs no dark-mode variant. No inline style attributes — CSP-safe. */
.post-figure {
  margin: clamp(1.75rem, 4.5vw, 2.75rem) 0;
}

.post-figure svg {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(54, 112, 92, 0.16);
  border-radius: 0.9rem;
  box-shadow: 0 14px 34px rgba(32, 60, 51, 0.06);
}

.post-figure figcaption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.visual-map .visual-canvas {
  background:
    radial-gradient(circle at 22% 30%, rgba(54, 112, 92, 0.14), transparent 5.5rem),
    radial-gradient(circle at 72% 28%, rgba(54, 112, 92, 0.12), transparent 5rem),
    radial-gradient(circle at 58% 72%, rgba(54, 112, 92, 0.1), transparent 5rem),
    linear-gradient(145deg, #ffffff, #f4f8f5);
}

.visual-node {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  width: clamp(5.4rem, 12vw, 6.8rem);
  min-height: 3.1rem;
  padding: 0.58rem;
  border: 1px solid rgba(54, 112, 92, 0.24);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 26px rgba(32, 60, 51, 0.1);
  color: var(--text-primary, #111827);
  font-size: clamp(0.78rem, 1.15vw, 0.92rem);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.visual-node:hover,
.article-visual.is-documents .visual-node-3,
.article-visual.is-deadlines .visual-node-2 {
  transform: translateY(-4px);
  border-color: var(--accent, #36705c);
  box-shadow: 0 18px 36px rgba(54, 112, 92, 0.18);
}

.visual-node-1 {
  top: 1.5rem;
  left: 1.5rem;
}

.visual-node-2 {
  top: 2.6rem;
  right: 1.5rem;
}

.visual-node-3 {
  right: 3.4rem;
  bottom: 2rem;
}

.visual-node-4 {
  left: 1.7rem;
  bottom: 2.6rem;
}

.visual-framework .visual-node {
  border-radius: 1.2rem 1.2rem 1.2rem 0.45rem;
  text-align: left;
}

.visual-framework .visual-node-1 {
  top: 1.4rem;
  left: 1.3rem;
}

.visual-framework .visual-node-2 {
  top: 4.6rem;
  right: 2rem;
}

.visual-framework .visual-node-3 {
  right: 4rem;
  bottom: 1.35rem;
}

.visual-framework .visual-node-4 {
  left: 1.55rem;
  bottom: 3.65rem;
}

.visual-timeline .visual-node {
  width: clamp(4.6rem, 10vw, 5.8rem);
  min-height: 4.4rem;
  border-radius: 999px;
}

.visual-timeline .visual-node-1 {
  top: 50%;
  left: 1.2rem;
  transform: translateY(-50%);
}

.visual-timeline .visual-node-2 {
  top: 50%;
  left: 30%;
  right: auto;
  transform: translateY(-50%);
}

.visual-timeline .visual-node-3 {
  top: 50%;
  right: 30%;
  bottom: auto;
  transform: translateY(-50%);
}

.visual-timeline .visual-node-4 {
  top: 50%;
  right: 1.2rem;
  bottom: auto;
  left: auto;
  transform: translateY(-50%);
}

.visual-timeline .visual-node:hover,
.visual-timeline.is-documents .visual-node-3,
.visual-timeline.is-deadlines .visual-node-2 {
  transform: translateY(calc(-50% - 4px));
}

.visual-comparison .visual-node {
  border-radius: 0.55rem;
}

.visual-comparison .visual-node-1,
.visual-comparison .visual-node-2 {
  top: 2rem;
}

.visual-comparison .visual-node-3,
.visual-comparison .visual-node-4 {
  bottom: 2rem;
}

.visual-comparison .visual-node-1,
.visual-comparison .visual-node-4 {
  left: 2rem;
}

.visual-comparison .visual-node-2,
.visual-comparison .visual-node-3 {
  right: 2rem;
}

.visual-map .visual-node {
  border-radius: 999px;
}

.visual-map .visual-node-1 {
  top: 1.45rem;
  left: 2rem;
}

.visual-map .visual-node-2 {
  top: 1.45rem;
  right: 2rem;
}

.visual-map .visual-node-3 {
  right: 4.4rem;
  bottom: 1.7rem;
}

.visual-map .visual-node-4 {
  left: 2.3rem;
  bottom: 1.9rem;
}

.visual-line {
  position: absolute;
  z-index: 1;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(54, 112, 92, 0.38), transparent);
  transform-origin: left center;
  animation: articleFlow 3.5s ease-in-out infinite;
}

.visual-line-a {
  top: 48%;
  left: 16%;
  width: 68%;
  transform: rotate(15deg);
}

.visual-line-b {
  top: 49%;
  left: 16%;
  width: 66%;
  transform: rotate(-18deg);
  animation-delay: 1.1s;
}

.visual-framework .visual-line-a {
  top: 36%;
  left: 19%;
  width: 64%;
  transform: rotate(12deg);
}

.visual-framework .visual-line-b {
  top: 60%;
  left: 20%;
  width: 58%;
  transform: rotate(-11deg);
}

.visual-timeline .visual-line-a {
  top: 50%;
  left: 8%;
  width: 84%;
  transform: none;
}

.visual-timeline .visual-line-b {
  display: none;
}

.visual-comparison .visual-line-a {
  top: 33%;
  left: 22%;
  width: 56%;
  transform: none;
}

.visual-comparison .visual-line-b {
  top: 66%;
  left: 22%;
  width: 56%;
  transform: none;
}

.visual-map .visual-line-a {
  top: 47%;
  left: 18%;
  width: 62%;
  transform: rotate(4deg);
}

.visual-map .visual-line-b {
  top: 52%;
  left: 22%;
  width: 56%;
  transform: rotate(-26deg);
}

.visual-pulse {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6rem;
  height: 6rem;
  border: 1px solid rgba(54, 112, 92, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: articlePulse 3s ease-out infinite;
}

.visual-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem 0.85rem 0;
}

.visual-controls button {
  border: 1px solid var(--border, #dbe3ef);
  border-radius: 999px;
  background: #fff;
  color: var(--text-secondary, #475569);
  cursor: pointer;
  font: inherit;
  font-size: 0.86rem;
  padding: 0.42rem 0.72rem;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.visual-controls button:hover,
.visual-controls button:focus-visible {
  border-color: rgba(54, 112, 92, 0.3);
  background: rgba(54, 112, 92, 0.08);
  color: var(--accent, #36705c);
}

.visual-controls button:focus-visible {
  outline: 3px solid rgba(54, 112, 92, 0.2);
  outline-offset: 2px;
}

.visual-controls button:active {
  transform: translateY(1px);
}

.visual-controls button.is-active {
  border-color: var(--accent, #36705c);
  background: rgba(54, 112, 92, 0.12);
  color: var(--accent, #36705c);
}

.visual-caption {
  margin: 0;
  padding: 0.7rem 0.85rem 0.9rem;
  color: var(--text-secondary, #475569);
  font-size: 0.9rem;
  line-height: 1.55;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(12rem, 16rem) minmax(0, 51rem);
  gap: clamp(1.6rem, 4vw, 3.5rem);
  align-items: start;
  justify-content: center;
}

.article-toc {
  position: sticky;
  top: 5rem;
  max-height: calc(100vh - 7rem);
  overflow: auto;
  border-left: 2px solid var(--border, #dbe3ef);
  padding-left: 1rem;
}

.article-toc p {
  margin: 0 0 0.8rem;
  color: var(--text-primary, #111827);
  font-weight: 800;
}

.article-toc ol {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-toc a {
  color: var(--text-secondary, #475569);
  font-size: 0.92rem;
  line-height: 1.35;
  text-decoration: none;
}

.article-toc a:hover,
.article-toc a.is-active {
  color: var(--accent, #2563eb);
}

.blog-article {
  min-width: 0;
  padding-bottom: 4rem;
  color: var(--text-primary, #111827);
  font-family: var(--font-body, system-ui, sans-serif);
}

.blog-article h2,
.blog-article h3,
.blog-article h4 {
  scroll-margin-top: 6rem;
  font-family: var(--font-display, inherit);
  letter-spacing: 0;
}

.blog-article h2 {
  margin-top: 3.2rem;
  margin-bottom: 0.8rem;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.08;
  text-wrap: balance;
}

.blog-article h3 {
  margin-top: 2rem;
  margin-bottom: 0.6rem;
  font-size: clamp(1.24rem, 2vw, 1.55rem);
  line-height: 1.2;
}

.blog-article h4 {
  margin-top: 1.55rem;
  margin-bottom: 0.45rem;
  color: var(--text-primary, #111827);
  font-size: clamp(1.08rem, 1.5vw, 1.24rem);
  line-height: 1.25;
}

.blog-article p,
.blog-article li {
  color: var(--text-primary, #111827);
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: clamp(1.04rem, 1.14vw, 1.12rem);
  line-height: 1.78;
  text-wrap: pretty;
}

.blog-article li {
  padding-left: 0.15rem;
}

.blog-article p {
  margin: 0 0 1.12rem;
}

.blog-article ul,
.blog-article ol {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0 1.4rem;
  padding-left: 1.35rem;
}

.blog-article ul {
  list-style: disc;
}

.blog-article ol {
  list-style: decimal;
}

.blog-article strong {
  color: var(--text-primary, #111827);
  font-weight: 800;
}

.blog-article code {
  border: 1px solid var(--border, #dbe3ef);
  border-radius: 0.35rem;
  background: var(--bg-sunken, #f1f5f9);
  padding: 0.08rem 0.28rem;
  font-size: 0.9em;
}

.blog-article a {
  color: var(--accent, #2563eb);
  text-underline-offset: 0.18em;
}

.blog-article a:hover {
  color: var(--accent-hover, #1d4ed8);
}

.blog-article a:focus-visible {
  border-radius: 0.2rem;
  outline: 3px solid rgba(37, 99, 235, 0.2);
  outline-offset: 2px;
}

.blog-article img {
  display: block;
  width: 100%;
  height: auto;
  margin: 1.75rem 0 2rem;
  border: 1px solid rgba(54, 112, 92, 0.14);
  border-radius: 0.9rem;
  background: #fff;
  box-shadow: 0 14px 34px rgba(32, 60, 51, 0.06);
}

.heading-anchor {
  opacity: 0;
  font-size: 0.72em;
  text-decoration: none;
  transition: opacity 160ms ease;
}

.blog-article h2:hover .heading-anchor,
.blog-article h3:hover .heading-anchor,
.heading-anchor:focus {
  opacity: 1;
}

.blog-article h2:focus-within .heading-anchor,
.blog-article h3:focus-within .heading-anchor {
  opacity: 1;
}

.answer-block,
.article-callout {
  margin: 2rem 0;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(219, 234, 254, 0.78), rgba(255, 255, 255, 0.95));
  padding: clamp(1.1rem, 3vw, 1.6rem);
}

.article-example {
  border-color: rgba(100, 116, 139, 0.18);
  background:
    linear-gradient(90deg, rgba(54, 112, 92, 0.1) 0 4px, transparent 4px),
    linear-gradient(135deg, rgba(248, 250, 252, 0.96), rgba(255, 255, 255, 0.98));
}

.article-example p {
  color: var(--text-secondary, #475569);
  font-size: clamp(0.98rem, 1.04vw, 1.05rem);
}

.article-example p + p {
  margin-top: 0.7rem;
}

.answer-block h2 {
  margin: 0 0 0.55rem;
  font-size: 1.15rem;
}

.answer-block p,
.article-callout p {
  margin: 0;
}

.article-cta {
  border-color: rgba(47, 117, 89, 0.24);
  background: linear-gradient(135deg, rgba(235, 248, 242, 0.92), rgba(255, 255, 255, 0.98));
}

.article-cta p {
  color: var(--text-secondary, #3f4652);
}

.article-cta p + p {
  margin-top: 0.75rem;
}

.article-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.15rem;
  border: 1px solid rgba(47, 117, 89, 0.34);
  border-radius: 999px;
  background: #2f7559;
  color: #fff;
  padding: 0.62rem 0.92rem;
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.article-cta a:hover {
  background: #266148;
  box-shadow: 0 14px 30px rgba(47, 117, 89, 0.18);
  transform: translateY(-1px);
}

.article-cta a:active {
  transform: translateY(0);
}

.article-table {
  margin: 1.35rem 0 2rem;
  border: 1px solid var(--border, #dbe3ef);
  border-radius: 0.85rem;
  background: #fff;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.04);
}

.article-table:focus {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  outline-offset: 3px;
}

.article-table table {
  width: 100%;
  border-collapse: collapse;
  table-layout: auto;
}

.article-table th,
.article-table td {
  border-bottom: 1px solid var(--border, #dbe3ef);
  padding: 0.7rem 0.72rem;
  text-align: left;
  vertical-align: top;
  color: var(--text-primary, #111827);
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.45;
  overflow-wrap: anywhere;
  word-break: normal;
}

.article-table th {
  background: var(--bg-sunken, #f1f5f9);
  color: var(--text-primary, #111827);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.article-table tbody tr:nth-child(even) td {
  background: rgba(248, 250, 252, 0.66);
}

.article-table tr:last-child td {
  border-bottom: 0;
}

@media (max-width: 860px) {
  .article-table {
    border: 0;
    background: transparent;
  }

  .article-table table,
  .article-table thead,
  .article-table tbody,
  .article-table tr,
  .article-table th,
  .article-table td {
    display: block;
    width: 100%;
  }

  .article-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .article-table tr {
    display: grid;
    gap: 0.45rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border, #dbe3ef);
    border-radius: 0.75rem;
    background: #fff;
    padding: 0.72rem;
  }

  .article-table td {
    display: grid;
    grid-template-columns: minmax(7rem, 0.42fr) 1fr;
    gap: 0.62rem;
    border-bottom: 1px solid var(--border, #dbe3ef);
    padding: 0 0 0.52rem;
    font-size: 0.86rem;
    line-height: 1.38;
  }

  .article-table td:last-child {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .article-table td::before {
    content: attr(data-label);
    color: var(--text-tertiary, #64748b);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.01em;
  }
}

.related-posts {
  margin-top: clamp(1.25rem, 4vw, 2.5rem);
  padding-top: clamp(2rem, 5vw, 3.25rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  border-top: 1px solid var(--border, #dbe3ef);
}

.related-posts .section-heading {
  display: grid;
  gap: 0.45rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.related-posts .section-heading .eyebrow {
  margin: 0;
}

.related-posts .section-heading h2 {
  max-width: 12ch;
  margin: 0;
  font-family: var(--font-display, inherit);
  font-size: clamp(2rem, 3.6vw, 3.15rem);
  line-height: 1.02;
  letter-spacing: 0;
  text-wrap: balance;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.9rem, 2vw, 1.25rem);
  align-items: stretch;
}

.related-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 0.8rem;
  min-height: 11rem;
  border: 1px solid rgba(54, 112, 92, 0.14);
  border-radius: 1rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 250, 248, 0.94)),
    #fff;
  padding: clamp(1rem, 2vw, 1.25rem);
  color: inherit;
  text-decoration: none;
  box-shadow: 0 14px 34px rgba(32, 60, 51, 0.06);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.related-card:hover,
.related-card:focus-visible {
  border-color: rgba(54, 112, 92, 0.34);
  box-shadow: 0 18px 42px rgba(32, 60, 51, 0.1);
  transform: translateY(-2px);
}

.related-card:focus-visible {
  outline: 3px solid rgba(54, 112, 92, 0.25);
  outline-offset: 3px;
}

.related-card span,
.related-card small {
  color: var(--text-tertiary, #64748b);
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: 0.84rem;
}

.related-card strong {
  color: var(--text-primary, #111827);
  font-family: var(--font-body, system-ui, sans-serif);
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
  line-height: 1.28;
  text-wrap: balance;
}

.related-card small {
  align-self: end;
}

@keyframes articleFlow {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}

@keyframes articlePulse {
  0% {
    opacity: 0.65;
    transform: translate(-50%, -50%) scale(0.8);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.55);
  }
}

@media (prefers-reduced-motion: reduce) {
  .visual-line,
  .visual-pulse,
  .visual-controls button {
    animation: none;
    transition: none;
  }
}

@media (max-width: 980px) {
  .article-hero,
  .article-layout,
  .article-visual-section {
    grid-template-columns: 1fr;
  }

  .article-hero h1 {
    max-width: 22ch;
  }

  .article-visual-copy h2,
  .article-visual-copy p:not(.eyebrow) {
    max-width: 100%;
  }

  .article-toc {
    position: static;
    max-height: none;
    border: 1px solid var(--border, #dbe3ef);
    border-radius: 0.9rem;
    padding: 1rem;
    background: #fff;
  }

  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .article-hero {
    padding-top: 2rem;
  }

  .article-hero h1 {
    font-size: clamp(1.85rem, 8vw, 2.55rem);
  }

  .visual-canvas {
    min-height: 17.5rem;
  }

  .visual-node {
    width: min(42vw, 6.4rem);
    min-height: 3.35rem;
    font-size: 0.78rem;
  }

  .visual-node-2,
  .visual-node-3 {
    right: 1rem;
  }

  .visual-node-1,
  .visual-node-4 {
    left: 1rem;
  }

  .article-table td {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

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

  .heading-anchor {
    opacity: 1;
  }
}

/* ── Public resource article (aggregated content) ──────────────────────────
   Reuses the markdown article chrome; adds a solo (no-TOC) layout, a lead
   image, an external-source line, a responsive embed, and the premium wall. */
.article-layout-solo {
  grid-template-columns: minmax(0, 54rem);
}

.article-source {
  margin: 0.75rem 0 0;
  color: var(--text-tertiary, #64748b);
  font-size: 0.9rem;
}
.article-source a { color: var(--accent, #2563eb); }

.article-lead-media {
  margin: 0 0 1.75rem;
  border-radius: var(--radius-md, 14px);
  overflow: hidden;
  background: var(--bg-sunken, #eef2f7);
  border: 1px solid var(--border, #dbe3ef);
}
.article-lead-media img {
  display: block;
  width: 100%;
  max-height: 30rem;
  object-fit: cover;
}

.article-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  margin: 0 0 1.75rem;
  border-radius: var(--radius-md, 14px);
  overflow: hidden;
  background: #000;
}
.article-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.article-paywall {
  margin: 2.5rem 0 0;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--border-strong, #cbd5e1);
  border-radius: var(--radius-lg, 18px);
  background: var(--bg-elevated, #fff);
  box-shadow: inset 0 3px 0 var(--accent, #2563eb);
  text-align: center;
}
.article-paywall .paywall-eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent, #2563eb);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.article-paywall h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.3rem, 3vw, 1.7rem);
}
.article-paywall p {
  margin: 0 auto 1.4rem;
  max-width: 34rem;
  color: var(--text-secondary, #475569);
}
.article-paywall .paywall-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}