.article-main {
  padding: clamp(7rem, 12vw, 10rem) 0 5rem;
}

.article-shell {
  width: min(100% - 2rem, 1140px);
  margin-inline: auto;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 2rem;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.breadcrumbs a {
  color: inherit;
}

.article-hero {
  display: grid;
  gap: 2rem;
  padding-bottom: clamp(3rem, 7vw, 6rem);
  border-bottom: 1px solid var(--line, var(--line-faint, rgba(255, 255, 255, 0.08)));
}

.article-hero__copy {
  max-width: 890px;
}

.article-hero h1 {
  max-width: 1000px;
  margin: 0.5rem 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.4vw, 4.9rem);
  line-height: 1;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.article-hero__lead {
  max-width: 760px;
  color: var(--mist);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.2rem;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.article-layout {
  display: grid;
  gap: 2.5rem;
  padding-top: clamp(2.5rem, 6vw, 5rem);
}

.article-toc {
  align-self: start;
  padding: 1.25rem;
  border: 1px solid var(--line, var(--line-faint, rgba(255, 255, 255, 0.08)));
  border-radius: 18px;
  background: var(--glass);
}

.article-toc strong {
  display: block;
  margin-bottom: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article-toc ol {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding-left: 1.1rem;
}

.article-toc a {
  color: var(--mist);
  text-decoration: none;
}

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

.article-body {
  min-width: 0;
  max-width: 780px;
}

.article-body h2 {
  margin: 3.6rem 0 1rem;
  scroll-margin-top: 7rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

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

.article-body h3 {
  margin: 2.1rem 0 0.7rem;
  font-size: 1.3rem;
}

.article-body p,
.article-body li {
  color: var(--mist);
  font-size: 1.04rem;
  line-height: 1.75;
}

.article-body strong {
  color: var(--ink);
}

.article-body ul,
.article-body ol {
  display: grid;
  gap: 0.55rem;
  padding-left: 1.35rem;
}

.article-note {
  margin: 2rem 0;
  padding: 1.3rem 1.4rem;
  border-left: 3px solid var(--pulse-hot);
  background: var(--glass);
  color: var(--ink);
}

.article-cta {
  margin-top: 4rem;
  padding: clamp(1.5rem, 5vw, 3rem);
  border: 1px solid rgba(255, 77, 28, 0.3);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255, 77, 28, 0.12), rgba(79, 140, 255, 0.08));
}

.article-cta h2 {
  margin-top: 0;
}

.related-guides {
  display: grid;
  gap: 1rem;
  margin-top: 4rem;
}

.related-guides a {
  display: block;
  padding: 1.2rem;
  border: 1px solid var(--line, var(--line-faint, rgba(255, 255, 255, 0.08)));
  border-radius: 16px;
  color: var(--ink);
  text-decoration: none;
  background: var(--glass);
}

.related-guides a:hover {
  border-color: var(--pulse-hot);
}

@media (min-width: 900px) {
  .article-layout {
    grid-template-columns: 250px minmax(0, 780px);
    justify-content: center;
  }

  .article-toc {
    position: sticky;
    top: 6.5rem;
  }

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