/* Shared blog layout; body copy is rendered into static HTML. */
.blog-main { padding-top: 54px; padding-bottom: 80px; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 30; padding: 12px; background: var(--surface); }
.skip-link:focus { top: 8px; }
.blog-main a:focus-visible, .nav-blog:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.nav-blog[aria-current="page"] { color: var(--accent); }
.blog-intro { display: grid; grid-template-columns: 1.35fr 1fr; gap: 72px; padding: 28px 0 56px; align-items: center; }
.blog-intro h1 { margin: 24px 0; font-size: clamp(36px, 4.5vw, 58px); line-height: 1.22; letter-spacing: -.035em; }
.blog-intro > div > p { max-width: 34em; color: var(--text-soft); font-size: 18px; }
.guide-total { display: block; color: var(--text-soft); font-size: 14px; margin-top: 24px; }
.start-card { padding: 30px; border-radius: var(--radius-lg); background: var(--bg-soft); border: 1px solid var(--line); }
.start-card > span { display: block; color: var(--accent); font-size: 14px; font-weight: 600; margin-bottom: 18px; }
.start-card .guide-card { background: var(--surface); }
.topic-nav { display: flex; flex-wrap: wrap; gap: 10px; border-block: 1px solid var(--line); padding: 22px 0; }
.topic-nav a { padding: 6px 16px; border-radius: 999px; background: var(--bg-soft); text-decoration: none; font-size: 14px; }
.topic-nav a:hover { color: var(--accent); }
.guide-section { margin-top: 48px; scroll-margin-top: 100px; }
.guide-section > h2 { display: flex; gap: 14px; align-items: center; font-size: 26px; margin: 0 0 24px; }
.section-count { font-size: 13px; color: var(--text-soft); font-weight: 400; }
.guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.guide-card { display: flex; flex-direction: column; position: relative; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.guide-card:hover { border-color: var(--accent); box-shadow: var(--shadow-soft); }
.guide-category { font-size: 13px; color: var(--accent); font-weight: 600; text-decoration: none; }
.guide-card h3 { font-size: 20px; line-height: 1.5; margin: 12px 0; overflow-wrap: anywhere; }
.guide-card h3 a { text-decoration: none; }
.guide-card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius-md); }
.guide-card p { font-size: 14px; color: var(--text-soft); margin: 0 0 24px; }
.card-read { color: var(--accent); font-size: 13px; margin-top: auto; }
.breadcrumbs { display: flex; gap: 12px; color: var(--text-soft); font-size: 14px; margin-bottom: 32px; }
.breadcrumbs a { text-decoration: none; }
.article-head { max-width: 850px; padding-bottom: 34px; border-bottom: 1px solid var(--line); }
.article-head h1 { font-size: clamp(28px, 3.8vw, 44px); line-height: 1.4; letter-spacing: -.02em; margin: 16px 0; overflow-wrap: anywhere; }
.article-lede { font-size: 18px; color: var(--text-soft); }
.article-meta { font-size: 13px; color: var(--text-soft); }
.article-meta a { text-decoration: none; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(0, 240px); gap: 64px; margin-top: 38px; align-items: start; }
.article-toc { grid-column: 2; grid-row: 1; position: sticky; top: 100px; max-height: 70vh; overflow-y: auto; border-left: 1px solid var(--line); padding-left: 20px; }
.article-toc h2 { font-size: 14px; margin: 0 0 16px; }
.article-toc ol { list-style: none; padding: 0; margin: 0; }
.article-toc li { margin: 10px 0; line-height: 1.6; font-size: 13px; }
.article-toc a { color: var(--text-soft); text-decoration: none; }
.article-toc a:hover { color: var(--accent); }
.article-body { grid-column: 1; grid-row: 1; font-size: 17px; line-height: 1.95; overflow-wrap: anywhere; }
.article-body h2, .article-body h3 { scroll-margin-top: 95px; line-height: 1.6; }
.article-body h2 { font-size: 25px; margin: 38px 0 16px; }
.article-body h3 { font-size: 20px; margin: 26px 0 12px; }
.article-body > :first-child { margin-top: 0; }
.article-body p { margin: 0 0 20px; }
.article-body ul, .article-body ol { padding-left: 1.5em; }
.article-body li { margin-bottom: 8px; }
.article-body a, .text-link { color: var(--accent); text-underline-offset: 4px; }
.references { border-top: 1px solid var(--line); margin-top: 40px; font-size: 14px; }
.blog-cta { margin-top: 56px; border: 1px solid var(--line); background: var(--bg-soft); border-radius: var(--radius-md); padding: 32px; }
.blog-cta h2 { margin-top: 0; }
.blog-cta p { max-width: 50em; color: var(--text-soft); }
@media (max-width: 950px) {
  .blog-intro { gap: 32px; }
  .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .article-toc { grid-column: 1; position: static; max-height: none; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius-sm); }
  .article-body { grid-row: 2; }
}
@media (max-width: 640px) {
  .blog-main { padding-top: 28px; padding-bottom: 48px; }
  .blog-intro { grid-template-columns: minmax(0, 1fr); padding-top: 12px; gap: 24px; }
  .start-card { padding: 20px; }
  .guide-grid { grid-template-columns: minmax(0, 1fr); }
  .guide-card { padding: 22px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 22px; }
}