/* Blog guides + index layout, v1 (24 Sep 2026). Loaded after ai-pages-v1.css + svc-pages-v1.css.
 * Not on the .htaccess one-year cache (name has no 8-char suffix), but still versioned: Change it as blog-v2.css. */
.blog-page [id] { scroll-margin-top: 7rem; }
.blog-grid { display: grid; gap: 3rem; padding-top: 7.5rem; padding-bottom: 4rem; }
@media (min-width: 1100px) { .blog-grid { grid-template-columns: minmax(0, 1fr) 18rem; gap: 4rem; padding-top: 9rem; } }
.blog-article { max-width: 46rem; min-width: 0; }
.blog-article h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); line-height: 1.12; letter-spacing: -0.02em;
  font-weight: 700; color: #fff; margin: 0.5rem 0 1.25rem; text-wrap: balance; }
.blog-article .blog-meta { font-size: 0.875rem; color: var(--ai-muted); margin: 0; }
.blog-article .blog-meta a { color: var(--ai-accent); }
.blog-article > p.text-lg:first-of-type { font-size: 1.1875rem; color: hsl(240 5% 80%); }
.blog-article figure.blog-hero { margin: 2rem 0 2.5rem !important; }
.blog-article h2 { font-size: 1.6rem !important; line-height: 1.25; letter-spacing: -0.01em;
  padding-top: 2rem; margin-top: 2.5rem !important; border-top: 1px solid var(--ai-line); text-wrap: balance; }
.blog-article h3 { color: #fff; }
.blog-article ul, .blog-article ol { line-height: 1.7; }
.blog-article li::marker { color: var(--ai-accent); }
.blog-article strong { color: #fff; }

/* contents: sticky sidebar on desktop, <details> on phones */
.blog-side { display: none; }
@media (min-width: 1100px) {
  .blog-side { display: block; }
  .blog-side-inner { position: sticky; top: 7rem; display: grid; gap: 1.25rem; }
  .blog-toc-m { display: none; }
}
.blog-toc p, .blog-toc-m summary { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ai-accent); margin: 0 0 0.75rem; }
.blog-toc ol, .blog-toc-m ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.15rem;
  border-left: 1px solid var(--ai-line); }
.blog-toc a, .blog-toc-m a { display: block; padding: 0.35rem 0 0.35rem 0.9rem; margin-left: -1px;
  border-left: 2px solid transparent; font-size: 0.875rem; line-height: 1.4; color: var(--ai-muted); }
.blog-toc a:hover, .blog-toc a[aria-current="true"] { color: #fff; border-left-color: var(--ai-accent); }
.blog-toc-m { margin: 0 0 2rem; padding: 1rem 1.25rem; border: 1px solid var(--ai-line); border-radius: 1rem;
  background: var(--ai-card); }
.blog-toc-m summary { cursor: pointer; margin: 0; list-style: none; }
.blog-toc-m summary::-webkit-details-marker { display: none; }
.blog-toc-m summary::after { content: " +"; }
.blog-toc-m[open] summary::after { content: " \2212"; }
.blog-toc-m[open] ol { margin-top: 0.75rem; }

.blog-card { background: var(--ai-card); border: 1px solid hsl(216 57% 55% / 0.45); border-radius: 1.25rem;
  padding: 1.25rem; background-image: radial-gradient(20rem 12rem at 100% 0%, hsl(216 57% 55% / 0.14), transparent 70%); }
.blog-card p.k { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ai-accent); margin: 0 0 0.5rem; }
.blog-card h3 { font-size: 1.1rem; font-weight: 700; color: #fff; margin: 0 0 0.5rem; }
.blog-card p { font-size: 0.875rem; line-height: 1.55; color: var(--ai-muted); margin: 0 0 1rem; }
.blog-card a.btn { display: flex; justify-content: center; align-items: center; min-height: 2.75rem; border-radius: 0.6rem;
  background: var(--ai-accent); color: #fff; font-weight: 600; font-size: 0.9rem; }
.blog-card a.alt { display: block; text-align: center; margin-top: 0.6rem; font-size: 0.875rem; color: #fff; }

/* index */
.blog-index-top { padding-top: 7.5rem; }
@media (min-width: 1024px) { .blog-index-top { padding-top: 9rem; } }
.blog-index-top h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); font-weight: 700; color: #fff; margin: 0.25rem 0 1rem; }
.blog-index-top p.lede { color: hsl(240 5% 78%); font-size: 1.125rem; line-height: 1.65; max-width: 44rem; margin: 0 0 1.5rem; }
.blog-filter { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 2rem; }
.blog-filter button { font: inherit; font-size: 0.875rem; font-weight: 500; color: var(--ai-muted); cursor: pointer;
  padding: 0.45rem 0.9rem; border-radius: 999px; border: 1px solid var(--ai-line); background: var(--ai-card); }
.blog-filter button[aria-pressed="true"] { color: #fff; background: var(--ai-accent); border-color: var(--ai-accent); }
.blog-filter .count { opacity: 0.7; margin-left: 0.3rem; }