.blog-shell { background: var(--paper-clean); min-height: 100vh; }
.blog-shell :where(a, button, input):focus-visible { outline: 2px solid var(--red-deep); outline-offset: 5px; }
.blog-header, .blog-main, .blog-footer { max-width: var(--max); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.blog-header { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.blog-header nav { display: flex; align-items: center; gap: 30px; }
.blog-header nav { margin-left: auto; }
.blog-header .language-switcher { order: 3; }
.blog-header nav a { font-size: 13px; font-weight: 600; padding: 12px 0; }
.blog-header a[aria-current], .blog-header nav a:hover { color: var(--red-deep); }
.blog-contact-link { display: inline-flex; align-items: center; gap: 8px; }
.blog-intro { display: flex; align-items: end; justify-content: space-between; gap: 32px; padding: 56px 0 40px; }
.blog-intro h1 { font: 600 100px/1 "Barlow Condensed", sans-serif; margin: 0; }
.blog-intro h1 span { color: var(--red-deep); }
.blog-intro p { font-size: 16px; line-height: 1.7; margin: 0 0 4px; color: #50504c; }
.blog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 14px 0; }
.blog-categories { display: flex; flex-wrap: wrap; gap: 22px; }
.blog-categories button { border: 0; border-bottom: 2px solid transparent; padding: 12px 0; background: transparent; font-size: 13px; font-weight: 600; cursor: pointer; min-height: 44px; }
.blog-categories button[aria-pressed="true"] { color: var(--red-deep); border-color: var(--red-deep); }
.blog-search { display: flex; align-items: center; gap: 10px; border-bottom: 1px solid #888; width: 250px; flex: 0 0 250px; }
.blog-search input { background: transparent; border: 0; font-size: 16px; padding: 10px 0; min-width: 0; width: 100%; text-transform: none; }
.blog-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.blog-result-count { margin: 18px 0; color: #62625c; font-size: 12px; }
.blog-featured { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; padding: 6px 0 40px; }
.blog-feature-image { display: block; }
.blog-feature-image img { width: 100%; height: auto; aspect-ratio: 3/2; object-fit: cover; display: block; }
.blog-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; font-size: 12px; font-weight: 600; line-height: 1.5; margin: 0 0 18px; }
.blog-meta span:first-child { color: var(--red-deep); background: color-mix(in srgb, var(--red) 12%, transparent); padding: 5px 11px; border-radius: 999px; }
.blog-meta span:last-child { color: #666660; }
.blog-feature-copy h2 { font: 600 42px/1.12 "Barlow Condensed", sans-serif; margin: 0 0 18px; }
.blog-feature-copy > p:not(.blog-meta), .blog-post-content > p { font-size: 15px; line-height: 1.7; color: #50504c; margin: 0 0 20px; }
.blog-read, .blog-back { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 600; min-height: 44px; }
.blog-read { border-bottom: 1px solid var(--ink); transition: color 180ms ease, border-color 180ms ease, gap 180ms ease; }
.blog-read:hover { color: var(--red-deep); border-color: var(--red-deep); gap: 14px; }

.blog-posts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; padding-top: 8px; }
.blog-post-row { display: flex; flex-direction: column; background: var(--surface, #fff); border: 1px solid var(--line); overflow: hidden; transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease; }
.blog-post-row:hover { transform: translateY(-6px); box-shadow: 0 18px 36px rgba(20, 20, 16, 0.1); border-color: transparent; }
.blog-post-thumb { display: block; width: 100%; aspect-ratio: 3/2; overflow: hidden; background: var(--muted); }
.blog-post-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 300ms ease; }
.blog-post-row:hover .blog-post-thumb img { transform: scale(1.04); }
.blog-post-content { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; min-width: 0; }
.blog-post-row h2 { font-size: 21px; font-weight: 600; line-height: 1.35; margin: 0 0 10px; }
.blog-post-content > p { margin: 0 0 18px; flex: 1; }
.blog-post-row .blog-read { align-self: start; }
.blog-main a:hover { color: var(--red-deep); }
.blog-main { padding-bottom: 64px; }
.blog-empty { padding: 64px 0; }
.blog-empty h1, .blog-empty h2 { font-size: 30px; line-height: 1.3; }
.blog-empty p { color: #50504c; line-height: 1.6; }
.blog-empty button { display: inline-flex; gap: 8px; align-items: center; min-height: 44px; padding: 10px 16px; background: var(--ink); color: white; border: 0; cursor: pointer; }
.blog-footer { max-width: none; background: var(--ink); color: #fff; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px; padding: 36px max(24px, calc((100vw - var(--max))/2 + 24px)); }
.blog-footer p { font-size: 14px; line-height: 1.6; margin: 18px 0 0; }
.blog-footer .chat-link { color: #fff; }
.blog-footer-back { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; min-height: 44px; }
.blog-back { margin-top: 24px; }
.article-heading { max-width: 820px; margin: 36px auto; }
.article-heading h1 { font: 600 62px/1.08 "Barlow Condensed", sans-serif; margin: 0 0 24px; }
.article-intro { font-size: 19px; color: #50504c; line-height: 1.7; }
.article-author { font-size: 13px; margin-top: 24px; }
.article-cover { display: block; width: 100%; height: auto; max-height: 460px; object-fit: cover; margin: 32px 0 48px; }
.article-layout { display: grid; grid-template-columns: 240px minmax(0, 700px); gap: 64px; margin-top: 48px; }
.article-toc { align-self: start; position: sticky; top: 24px; border-top: 1px solid var(--line); padding-top: 18px; }
.article-toc h2 { font-size: 14px; margin: 0 0 16px; }
.article-toc ol { padding-left: 20px; margin: 0; }
.article-toc li { padding: 6px 0; font-size: 13px; line-height: 1.6; color: #50504c; }
.article-body section { scroll-margin-top: 32px; margin-bottom: 40px; }
.article-body h2 { font-size: 26px; font-weight: 600; line-height: 1.3; margin: 0 0 20px; }
.article-body p { font-size: 17px; font-weight: 400; line-height: 1.85; margin: 0 0 20px; }
.article-body section:first-of-type > p:first-of-type { font-size: 19px; line-height: 1.75; }
.blog-related { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--line); }
.blog-related h2 { font-size: 26px; font-weight: 600; margin: 0 0 24px; }
.related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.related-card { display: block; }
.related-card img { width: 100%; aspect-ratio: 3/2; object-fit: cover; display: block; margin-bottom: 16px; background: var(--muted); transition: filter 200ms ease; }
.related-card:hover img { filter: contrast(1.05) saturate(1.05); }
.related-card .blog-meta { margin-bottom: 10px; }
.related-card h3 { font-size: 17px; font-weight: 600; line-height: 1.4; margin: 0; }
.related-card:hover h3 { color: var(--red-deep); }

/* Reading progress */
.reading-progress { position: sticky; top: 0; height: 3px; background: var(--line); z-index: 25; }
.reading-progress-bar { display: block; height: 100%; width: 100%; background: var(--red-deep); transform: scaleX(0); transform-origin: left; }

/* Breadcrumb */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 12px; font-weight: 600; color: #7a7a74; margin: 28px auto 0; max-width: 820px; }
.breadcrumb a:hover { color: var(--red-deep); }
.breadcrumb span { color: #b7b7ae; }

/* Article layout: sticky TOC + share */
.toc-sticky { position: sticky; top: 24px; display: grid; gap: 28px; }
.article-toc { align-self: start; }
.article-share { border-top: 1px solid var(--line); padding-top: 18px; display: grid; gap: 10px; }
.article-share p { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; color: #7a7a74; margin: 0 0 4px; }
.article-share .chat-link { padding: 8px 12px; font-size: 12px; justify-content: flex-start; }
.chat-copy { color: var(--ink); border-color: var(--line); cursor: pointer; background: transparent; appearance: none; font: inherit; text-align: left; }
.chat-copy:hover, .chat-copy.is-copied { background: var(--ink); color: #fff; border-color: var(--ink); }
.toc-link.is-active { color: var(--red-deep); font-weight: 600; }

/* Author card + CTA */
.author-card { display: flex; gap: 18px; align-items: flex-start; margin: 48px 0; padding: 24px; background: var(--muted); }
.author-card .identity-emblem { width: 52px; height: 52px; font-size: 22px; flex-shrink: 0; }
.author-card-name { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: #7a7a74; margin: 0 0 6px; }
.author-card h3 { font-size: 18px; font-weight: 600; margin: 0 0 8px; }
.author-card p:last-child { font-size: 14px; line-height: 1.6; color: #50504c; margin: 0; }
.author-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding: 28px; background: var(--ink); color: #fff; margin-bottom: 40px; }
.author-cta p { font-size: 16px; line-height: 1.6; margin: 0; max-width: 360px; }

/* Back to top */
.back-to-top { position: fixed; right: 24px; bottom: 24px; width: 44px; height: 44px; display: grid; place-items: center; background: var(--ink); color: #fff; border: 0; z-index: 20; transform: rotate(90deg); transition: opacity 200ms ease, transform 200ms ease; }
.back-to-top:hover { background: var(--red-deep); }
@media (max-width: 850px) {
  .blog-toolbar { flex-direction: column; align-items: stretch; }
  .blog-search { flex-basis: auto; width: 100%; }
  .blog-featured { gap: 24px; }
  .blog-feature-copy h2 { font-size: 34px; }
  .related-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .article-layout { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .article-toc, .toc-sticky { position: static; }
  .toc-sticky { gap: 20px; }
}
@media (max-width: 620px) {
  .blog-header, .blog-main { padding-left: 16px; padding-right: 16px; }
  .blog-header { flex-wrap: wrap; gap: 10px 20px; padding-top: 16px; padding-bottom: 12px; }
  .blog-header nav { gap: 20px; flex-wrap: wrap; }
  .blog-header .language-switcher { order: 2; }
  .blog-header nav { order: 3; width: 100%; margin-left: 0; }
  .blog-intro { align-items: start; flex-direction: column; gap: 20px; padding: 36px 0 28px; }
  .blog-intro h1 { font-size: 76px; }
  .blog-intro p { font-size: 15px; }
  .blog-categories { gap: 8px 20px; }
  .blog-featured { grid-template-columns: minmax(0,1fr); }
  .blog-posts { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .blog-post-row h2 { font-size: 19px; }
  .related-grid { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .article-heading h1 { font-size: 42px; }
  .article-intro { font-size: 17px; }
  .article-body h2 { font-size: 23px; }
  .article-body p { font-size: 16px; }
  .author-card { flex-direction: column; }
  .author-cta { flex-direction: column; align-items: start; }
  .blog-footer { padding: 32px 16px; align-items: start; flex-direction: column; gap: 12px; }
  .back-to-top { right: 16px; bottom: 16px; }
}