/* Editorial treatment for article pages; shared cards and identity stay intact. */
.article-head{max-width:960px;padding-top:38px;padding-bottom:20px}
.article-head .crumbs{font-size:13px;margin-bottom:14px}
.article-head .back{display:inline-block;font-size:14px;margin-bottom:4px}
.article-head .eyebrow{margin-top:18px;margin-bottom:8px}
.article-head h1{max-width:900px;font-size:clamp(35px,4.3vw,56px);line-height:1.09;letter-spacing:-.04em;margin-bottom:16px}
.article-lede{font-size:clamp(18px,2vw,21px);line-height:1.55;max-width:760px}
.article-details{gap:8px 16px;padding-top:4px;font-size:14px}
.article-cover{height:auto;aspect-ratio:1200/630;margin-top:26px;max-height:480px}
.article-layout{grid-template-columns:minmax(0,760px) minmax(200px,250px);gap:48px;align-items:start}
.article-layout aside{position:sticky;top:24px;border-left:1px solid var(--line);max-height:calc(100vh - 48px);overflow:auto}
.article-toc{margin-bottom:28px}.article-toc summary{cursor:pointer;font-weight:750;color:var(--ink)}
.article-toc ol{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:3px}
.article-toc a{display:block;padding:5px 8px;color:var(--muted);text-decoration:none;border-left:2px solid transparent;line-height:1.35}
.article-toc a:hover,.article-toc a[aria-current="location"]{color:var(--ink);border-color:var(--cyan);background:rgba(94,168,255,.09)}
.article-toc a:focus-visible,.article-toc summary:focus-visible,.back:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.prose h2{scroll-margin-top:24px}.prose{line-height:1.75}.prose h2{margin-top:42px}.article-nav{flex-wrap:wrap}
.card .article-visual::before,.featured .article-visual::before,.article-head .article-visual::before{content:none}
@media (max-width:850px){.article-layout{display:flex;flex-direction:column;gap:20px}.article-layout aside{order:-1;position:static;max-height:none;overflow:visible;width:100%;border-left:0;border-top:0;padding:16px 0;margin:0}.article-toc{margin-bottom:20px}.article-toc ol{grid-template-columns:1fr}.article-head{margin-left:16px;margin-right:16px}.article-head h1{font-size:clamp(32px,8vw,44px)}.article-cover{height:auto;max-height:none}.prose{min-width:0}}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
.article-toc{padding:0;background:none;border:0;border-radius:0;margin:0 0 26px}
.article-toc-label{margin:0 0 8px;color:var(--ink);font-size:15px;font-weight:750}
.article-toc ol{columns:1;list-style:none;padding:0}

/* Phase 2: the contents are open on desktop and fold away on small screens. */
.article-toc .toc-details{min-width:0}
.article-toc .toc-details>summary{display:list-item;list-style-position:inside;min-height:44px;cursor:pointer;padding:10px 4px 8px;font-size:15px}
.article-toc .toc-details[open]>summary{margin-bottom:4px}
.article-toc .toc-details>summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
@media(max-width:850px){
  .article-toc .toc-details{width:100%}
  .article-toc .toc-details>summary{min-height:48px}
  .article-toc .toc-details ol{max-height:45vh;overflow-y:auto}
  .article-layout>.prose{width:100%}
}