.article-page {
  min-height: 70vh;
  background: var(--paper);
}

.article-breadcrumbs {
  border-bottom: 1px solid var(--line);
  background: var(--canvas);
}

.article-breadcrumbs .shell {
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 9px;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.73rem;
  white-space: nowrap;
}

.article-breadcrumbs a:hover {
  color: #26705f;
}

.article-breadcrumbs strong {
  overflow: hidden;
  color: var(--ink-soft);
  font-weight: 650;
  text-overflow: ellipsis;
}

.article-shell {
  padding-top: 70px;
  padding-bottom: 100px;
}

.article-hero {
  width: 100%;
  padding-bottom: 52px;
}

.article-hero h1 {
  max-width: 1180px;
  margin: 0;
  font-size: clamp(2.45rem, 4.4vw, 4.25rem);
  font-weight: 840;
  letter-spacing: -0.06em;
  line-height: 0.99;
}

.article-dek {
  max-width: 850px;
  margin: 24px 0 20px;
  color: #4f625d;
  font-size: 1.16rem;
  line-height: 1.7;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.article-meta span {
  padding: 6px 10px;
  border-radius: 999px;
  color: #45615a;
  background: var(--mint-soft);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.preview-badge {
  display: inline-flex;
  margin-top: 18px;
  padding: 8px 12px;
  border: 1px solid #d5a633;
  border-radius: 9px;
  color: #6b531a;
  background: var(--sand-soft);
  font-size: 0.78rem;
  font-weight: 750;
}

.article-layout {
  display: grid;
  grid-template-columns: 285px minmax(0, 780px);
  align-items: start;
  justify-content: start;
  gap: 50px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}

.article-sidebar {
  position: sticky;
  top: 110px;
}

.article-toc {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fbfaf5;
}

.article-toc > p {
  margin: 0 0 12px;
  color: #64746f;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.article-toc ol {
  display: grid;
  gap: 3px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: toc;
}

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

.article-toc a {
  display: grid;
  grid-template-columns: 29px 1fr;
  gap: 8px;
  padding: 9px 7px;
  border-radius: 8px;
  color: #546660;
  font-size: 0.82rem;
  line-height: 1.45;
}

.article-toc a::before {
  color: #2a7c69;
  content: counter(toc, decimal-leading-zero);
  font-size: 0.7rem;
  font-weight: 850;
}

.article-toc a:hover,
.article-toc a.is-active {
  color: var(--ink);
  background: var(--mint-soft);
}

.article-content {
  color: #243b36;
  font-size: 1.02rem;
  line-height: 1.82;
}

.article-content > p:first-child {
  margin-top: 0;
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 530;
}

.article-content h2 {
  scroll-margin-top: 105px;
  margin: 50px 0 20px;
  color: var(--ink);
  font-size: clamp(1.75rem, 3vw, 2.45rem);
  font-weight: 820;
  letter-spacing: -0.042em;
  line-height: 1.13;
}

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

.article-content h3 {
  margin: 35px 0 13px;
  color: var(--ink-soft);
  font-size: 1.25rem;
  line-height: 1.3;
}

.article-content p {
  margin: 0 0 19px;
}

.article-content ul,
.article-content ol {
  display: grid;
  gap: 10px;
  margin: 18px 0 28px;
  padding-left: 24px;
}

.article-content li {
  padding-left: 5px;
}

.article-content li::marker {
  color: #2b8c75;
  font-weight: 800;
}

.article-content blockquote {
  margin: 28px 0;
  padding: 19px 21px;
  border-left: 4px solid #77cdb7;
  border-radius: 0 12px 12px 0;
  background: var(--mint-soft);
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content table {
  width: 100%;
  margin: 28px 0 34px;
  border-spacing: 0;
  border-collapse: separate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 13px;
  font-size: 0.84rem;
  line-height: 1.5;
}

.article-content th,
.article-content td {
  padding: 13px 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-content th:last-child,
.article-content td:last-child {
  border-right: 0;
}

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

.article-content th {
  color: var(--ink);
  background: var(--canvas);
  font-size: 0.72rem;
  font-weight: 820;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.article-callout {
  margin: 28px 0;
  padding: 20px 22px;
  border-radius: 13px;
}

.article-callout strong {
  display: block;
  margin-bottom: 7px;
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.article-callout p:last-child {
  margin-bottom: 0;
}

.article-callout--warning {
  border-left: 4px solid #e2ae2b;
  color: #5c4d28;
  background: var(--sand-soft);
}

.article-callout--note {
  border-left: 4px solid #5b9d8d;
  background: #edf5f2;
}

.article-callout--tip {
  border-left: 4px solid #2da780;
  background: var(--mint-soft);
}

.article-faq {
  margin-top: 70px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.article-faq details {
  border-bottom: 1px solid var(--line);
}

.article-faq summary {
  position: relative;
  padding: 19px 38px 19px 0;
  color: var(--ink);
  cursor: pointer;
  font-weight: 760;
  line-height: 1.45;
  list-style: none;
}

.article-faq summary::-webkit-details-marker {
  display: none;
}

.article-faq summary::after {
  position: absolute;
  top: 17px;
  right: 2px;
  color: #2d7665;
  content: "+";
  font-size: 1.35rem;
}

.article-faq details[open] summary::after {
  content: "−";
}

.article-faq details p {
  margin: -2px 0 20px;
  color: #52655f;
  font-size: 0.92rem;
}

.article-disclaimer {
  margin-top: 40px;
  padding: 23px;
  border-radius: 15px;
  color: #d9e8e4;
  background: var(--ink);
}

.article-disclaimer strong {
  display: block;
  color: var(--mint);
  font-size: 0.86rem;
}

.article-disclaimer p {
  margin: 8px 0 0;
  font-size: 0.82rem;
  line-height: 1.65;
}

.article-related {
  margin-top: 92px;
  padding-top: 55px;
  border-top: 1px solid var(--line);
}

.article-related__heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.05em;
}

.article-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 30px;
}

.article-related__grid > a,
.article-related__grid > article {
  display: flex;
  min-height: 145px;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fbfaf5;
  transition: border-color 180ms ease, transform 180ms ease;
}

.article-related__grid a:hover {
  border-color: #74ab9c;
  transform: translateY(-3px);
}

.article-related__grid > article.is-planned {
  color: #5d6d68;
  background: #f5f4ef;
}

.article-related__grid > article.is-planned span {
  color: #77847f;
}

.article-related__grid small {
  color: #2d806c;
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.article-related__grid strong {
  margin: 11px 0 16px;
  font-size: 0.91rem;
  line-height: 1.45;
}

.article-related__grid span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  color: #246f5d;
  font-size: 0.73rem;
  font-weight: 800;
}

.article-related__grid span i {
  font-size: 1rem;
  font-style: normal;
  transition: transform 180ms ease;
}

.article-related__grid a:hover span i {
  transform: translateX(4px);
}

@media (max-width: 920px) {
  .article-layout { grid-template-columns: 1fr; gap: 34px; }
  .article-sidebar { position: static; }
  .article-toc ol { grid-template-columns: 1fr 1fr; }
  .article-related__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .article-shell { padding-top: 48px; padding-bottom: 72px; }
  .article-hero { padding-bottom: 36px; }
  .article-hero h1 { font-size: 2.35rem; }
  .article-dek { font-size: 1rem; }
  .article-layout { padding-top: 32px; }
  .article-toc ol { grid-template-columns: 1fr; }
  .article-content { font-size: 0.98rem; line-height: 1.75; }
  .article-content h2 { margin-top: 50px; font-size: 1.85rem; }
  .article-content table { display: block; overflow-x: auto; white-space: normal; }
  .article-related { margin-top: 70px; }
  .article-related__grid { grid-template-columns: 1fr; }
}