/* Blog article reading experience */
.blog-article {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}
.blog-article__header {
  margin: 1.5rem 0 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.blog-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.25rem;
  font-size: .875rem;
  color: var(--text-muted);
  margin-top: .75rem;
}
.blog-article__tag {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.blog-article section {
  margin-bottom: 2rem;
}
.blog-article h2 {
  margin-top: 0;
  margin-bottom: .75rem;
  font-size: 1.35rem;
}
.blog-article h3 {
  margin: 1.25rem 0 .5rem;
  font-size: 1.1rem;
}
.blog-article p,
.blog-article li {
  color: var(--text-muted);
  line-height: 1.75;
}
.blog-article ul,
.blog-article ol {
  margin: .75rem 0 1rem;
  padding-left: 1.35rem;
}
.blog-article li { margin-bottom: .4rem; }
.blog-article strong { color: var(--text); }
.blog-formula {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 1rem 1.15rem;
  margin: 1rem 0;
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--text);
}
.blog-example {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
  margin: 1rem 0;
}
.blog-example h3 {
  margin-top: 0;
  font-size: 1rem;
  color: var(--color-primary);
}
.blog-toc {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 2rem;
}
.blog-toc h2 {
  font-size: 1rem;
  margin: 0 0 .65rem;
}
.blog-toc ol {
  margin: 0;
  padding-left: 1.2rem;
}
.blog-toc a {
  text-decoration: none;
  color: var(--text);
}
.blog-toc a:hover { color: var(--color-primary); text-decoration: underline; }
.blog-cta {
  margin-top: 2.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary-soft), var(--bg-alt));
  border: 1px solid var(--border);
  text-align: center;
}
.blog-cta h2 { margin-bottom: .5rem; }
.blog-cta p { margin-bottom: 1rem; }
.blog-related {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.blog-related ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .5rem;
}
.blog-related a {
  font-weight: 500;
  text-decoration: none;
}
.blog-related a:hover { text-decoration: underline; }