.article-page{flex-direction:column;min-height:100vh;display:flex}.article-topbar{border-bottom:1px solid var(--line);background:var(--panel);height:52px;top:var(--site-header-h);z-index:20;align-items:center;gap:14px;padding:0 20px;display:flex;position:sticky}.article-back{font-family:var(--mono);color:var(--text-dim);border:1px solid var(--line-strong);white-space:nowrap;border-radius:6px;padding:5px 10px;font-size:12px;text-decoration:none}.article-back:hover{color:var(--text)}.article-topbar-eyebrow{font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:11px;overflow:hidden}.article-brand{font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint);white-space:nowrap;font-size:11px}.article-body{grid-template-columns:230px minmax(0,1fr);align-items:start;gap:24px;width:100%;max-width:1060px;margin:0 auto;padding:24px 20px 60px;display:grid}.article-toc{top:calc(76px + var(--site-header-h));flex-direction:column;gap:8px;display:flex;position:sticky}.article-toc-title{font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint);margin:0;font-size:10.5px}.article-toc ol{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex}.article-toc li a{border-left:2px solid var(--line);color:var(--text-dim);padding:5px 10px;font-size:12.5px;line-height:1.4;text-decoration:none;display:block}.article-toc li a:hover{color:var(--text);border-left-color:var(--text-faint)}.article-main{min-width:0}.article-lede{color:var(--text);margin:0 0 22px;font-size:16px;line-height:1.65}.go-deeper{border:1px dashed var(--line-strong);border-radius:var(--radius);background:#8fd3ff0a;margin:18px 0}.go-deeper summary{cursor:pointer;font-family:var(--mono);letter-spacing:.06em;color:var(--text-dim);-webkit-user-select:none;user-select:none;align-items:center;gap:8px;padding:11px 14px;font-size:12px;list-style:none;display:flex}.go-deeper summary::-webkit-details-marker{display:none}.go-deeper summary:after{content:"+";color:var(--text-faint);margin-left:auto;font-size:14px}.go-deeper[open] summary:after{content:"−"}.go-deeper summary:hover{color:var(--text)}.go-deeper-mark{color:var(--altitude,#8fd3ff)}.go-deeper-tag{letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint);border:1px solid var(--line-strong);border-radius:999px;padding:2px 8px;font-size:10px}.go-deeper-body{border-top:1px solid var(--line);padding:2px 16px 14px}.article-related{border-top:1px solid var(--line);margin-top:34px;padding-top:18px}.article-related-title{font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint);margin:0 0 10px;font-size:11px}.article-related ul{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.article-related li a{border:1px solid var(--line);color:var(--text);border-radius:8px;align-items:center;gap:10px;padding:9px 12px;font-size:13.5px;text-decoration:none;display:flex}.article-related li a:hover{border-color:var(--line-strong)}.article-related-kind{font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint);border:1px solid var(--line-strong);border-radius:999px;flex:none;padding:2px 8px;font-size:10px}@media (max-width:860px){.article-body{grid-template-columns:1fr}.article-toc{order:-1;position:static}}.article-page--embed .article-topbar,.article-page--embed .article-toc,.article-page--embed .article-related{display:none}.article-page--embed .article-body{grid-template-columns:minmax(0,1fr);max-width:780px}
@media print{@page{margin:18mm 16mm}html,body{background:#fff!important}.article-page{--navy-900:#fff;--navy-800:#fff;--navy-700:#fff;--navy-600:#eee;--panel:#fff;--panel-solid:#fff;--line:#bbb;--line-strong:#777;--accent:#333;--accent-strong:#333;--altitude:#111;--altitude-dim:#444;--lift:#333;--text:#111;--text-dim:#333;--text-faint:#555;color:#111!important;background:#fff!important}.article-page .article-topbar,.article-page .article-toc,.article-page .article-related{display:none!important}.article-page .article-body{max-width:none;padding:0;display:block}.article-page .callout,.article-page .callout-key,.article-page .callout-warning,.article-page .callout-units,.article-page .learn-figure{background:#fff!important}.article-page .learn-figure,.article-page .callout,.article-page .go-deeper,.article-page .tex-eq,.article-page table{break-inside:avoid;page-break-inside:avoid}.article-page h1,.article-page h2,.article-page h3{break-after:avoid;page-break-after:avoid}.article-page .article-main a[href^=http]:after{content:" (" attr(href) ")";color:#555;word-break:break-all;font-size:.85em}.article-page .go-deeper{border:1.5px solid #777;border-radius:4px;background:#fff!important}.article-page .go-deeper summary:after{content:none}.article-page .go-deeper-mark{color:#111}.article-page .go-deeper::details-content{content-visibility:visible;display:block}}