.page-shell .content-stack {
  display: grid;
  gap: 1.5rem;
}
.page-shell .content-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.two-column {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}
.meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  color: var(--text-soft);
  font-size: 0.82rem;
  margin: 0.8rem 0 1rem;
}
.article-content h2, .article-content h3 {
  margin-top: 1.5rem;
}
.article-content p, .article-content li {
  color: var(--text-soft);
}
.toc {
  display: grid;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.toc a {
  color: var(--navy);
  font-weight: 600;
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.tool-card .tool-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--green-soft);
  color: var(--green);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}
@media (max-width: 900px) {
  .two-column, .tool-grid {
    grid-template-columns: 1fr;
  }
}