:root {
  --blog-blue: #71b2e1;
  --blog-blue-strong: #4a97cc;
  --blog-bg: #0f0f0f;
  --blog-panel: #151b22;
  --blog-panel-soft: #101419;
  --blog-line: #2b343d;
  --blog-text: #f0f4f7;
  --blog-muted: #aab5bf;
}

* { box-sizing: border-box; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--blog-text); background: radial-gradient(circle at 18% 5%, rgba(113,178,225,.09), transparent 28%), var(--blog-bg); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.7; }
a { color: inherit; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 2000; padding: 10px 14px; background: #fff; color: #111; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.blog-header { position: sticky; top: 0; z-index: 1000; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px clamp(20px,5vw,72px); background: rgba(0,0,0,.82); border-bottom: 1px solid rgba(255,255,255,.13); backdrop-filter: blur(18px); }
.blog-brand img { display: block; width: 132px; height: 34px; object-fit: cover; }
.blog-nav { display: flex; gap: 24px; color: var(--blog-muted); font-size: 14px; font-weight: 750; }
.blog-nav a { text-decoration: none; }
.blog-nav a:hover, .blog-nav a[aria-current="page"] { color: var(--blog-blue); }
.breadcrumbs { max-width: 1120px; margin: 0 auto; padding: 24px 20px 0; color: var(--blog-muted); font-size: 14px; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #66727c; }
.article-hero, .index-hero { max-width: 960px; margin: 0 auto; padding: clamp(44px,7vw,86px) 20px 36px; text-align: center; }
.article-kicker { margin: 0 0 12px; color: var(--blog-blue); font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.article-hero h1, .index-hero h1 { margin: 0 auto 20px; color: var(--blog-blue); font-size: clamp(38px,6vw,68px); line-height: 1.03; letter-spacing: -.035em; }
.article-summary, .index-hero p { max-width: 780px; margin: 0 auto 18px; color: #d7dfe5; font-size: clamp(18px,2.1vw,22px); }
.article-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; color: var(--blog-muted); font-size: 14px; }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 250px; gap: clamp(36px,6vw,72px); max-width: 1120px; margin: 0 auto; padding: 24px 20px 80px; }
.article-content { min-width: 0; max-width: 760px; }
.article-content h2 { margin: 58px 0 16px; color: var(--blog-blue); font-size: clamp(28px,3.4vw,38px); line-height: 1.15; scroll-margin-top: 90px; }
.article-content h3 { margin: 34px 0 10px; color: #fff; font-size: 22px; line-height: 1.25; scroll-margin-top: 90px; }
.article-content p, .article-content li { color: #d7dfe5; }
.article-content a { color: #9fd1f3; text-underline-offset: 3px; }
.article-content li + li { margin-top: 8px; }
.quick-answer, .editor-note { margin: 0 0 36px; padding: 24px; background: linear-gradient(135deg, rgba(113,178,225,.14), rgba(255,255,255,.035)); border: 1px solid rgba(113,178,225,.34); border-radius: 18px; }
.quick-answer h2 { margin: 0 0 10px; font-size: 24px; }
.quick-answer p:last-child, .editor-note p:last-child { margin-bottom: 0; }
.toc { position: sticky; top: 90px; align-self: start; padding: 20px; background: var(--blog-panel-soft); border: 1px solid var(--blog-line); border-radius: 16px; }
.toc strong { display: block; margin-bottom: 10px; color: #fff; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li + li { margin-top: 7px; }
.toc a { color: var(--blog-muted); font-size: 13px; text-decoration: none; line-height: 1.35; }
.toc a:hover { color: var(--blog-blue); }
.table-wrap { overflow-x: auto; margin: 24px 0 34px; border: 1px solid var(--blog-line); border-radius: 16px; }
table { width: 100%; min-width: 650px; border-collapse: collapse; background: var(--blog-panel-soft); }
th, td { padding: 15px 16px; border-bottom: 1px solid var(--blog-line); text-align: left; vertical-align: top; }
th { color: #fff; background: var(--blog-panel); font-size: 14px; }
td { color: #d7dfe5; font-size: 14px; }
tr:last-child td { border-bottom: 0; }
.verdict-list { padding: 0; list-style: none; }
.verdict-list li { position: relative; padding: 16px 18px 16px 46px; background: var(--blog-panel-soft); border: 1px solid var(--blog-line); border-radius: 12px; }
.verdict-list li::before { content: "✓"; position: absolute; left: 18px; color: var(--blog-blue); font-weight: 900; }
.article-cta { margin: 56px 0; padding: clamp(26px,4vw,38px); background: linear-gradient(135deg, rgba(113,178,225,.20), rgba(74,151,204,.06)); border: 1px solid rgba(113,178,225,.38); border-radius: 20px; }
.article-cta h2 { margin: 0 0 10px; }
.cta-button { display: inline-flex; margin-top: 10px; min-height: 46px; align-items: center; justify-content: center; padding: 0 20px; color: #061019 !important; background: var(--blog-blue); border-radius: 999px; font-weight: 850; text-decoration: none; }
.cta-button:hover { background: #fff; }
.faq-list details { padding: 18px 0; border-bottom: 1px solid var(--blog-line); }
.faq-list summary { color: #fff; cursor: pointer; font-weight: 750; }
.faq-list details p { margin: 12px 0 0; }
.related-grid, .post-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.related-card, .post-card { display: flex; flex-direction: column; padding: 22px; background: var(--blog-panel-soft); border: 1px solid var(--blog-line); border-radius: 16px; text-decoration: none; transition: border-color .18s ease, transform .18s ease; }
.related-card:hover, .post-card:hover { transform: translateY(-2px); border-color: var(--blog-blue); }
.related-card small, .post-card small { color: var(--blog-blue); font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.related-card strong, .post-card h2 { margin: 8px 0; color: #fff; font-size: 18px; line-height: 1.3; }
.post-card h2 { font-size: 22px; }
.post-card p { margin: 0; color: var(--blog-muted); }
.index-main { max-width: 1120px; margin: 0 auto; padding: 0 20px 90px; }
.category-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 60px 0 20px; }
.category-heading h2 { margin: 0; color: var(--blog-blue); font-size: 36px; }
.category-heading p { max-width: 620px; margin: 0; color: var(--blog-muted); }
.post-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.site-footer { display: flex; justify-content: space-between; gap: 24px; padding: 34px clamp(20px,5vw,72px); border-top: 1px solid var(--blog-line); color: var(--blog-muted); font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.site-footer a { color: var(--blog-muted); text-decoration: none; }
.site-footer a:hover { color: var(--blog-blue); }
.source-list { font-size: 14px; }
@media (max-width: 880px) {
  .article-layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; }
  .article-content { max-width: none; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .blog-header { align-items: flex-start; }
  .blog-nav { gap: 12px; font-size: 13px; }
  .blog-nav a:first-child { display: none; }
  .post-grid { grid-template-columns: 1fr; }
  .site-footer, .category-heading { align-items: flex-start; flex-direction: column; }
  .article-hero, .index-hero { text-align: left; }
  .article-summary, .index-hero p { margin-left: 0; }
  .article-meta { justify-content: flex-start; }
}
@media print {
  .blog-header, .toc, .site-footer { display: none; }
  body { background: #fff; color: #111; }
  .article-layout { display: block; }
  .article-content p, .article-content li, td { color: #222; }
}