.article-topbar .topbar-link{color:var(--muted);white-space:nowrap;font-size:.9375rem;text-decoration:none;transition:color .2s}.article-topbar .topbar-link:hover{color:var(--ink)}.read-progress{background:var(--yellow);transform-origin:0;pointer-events:none;height:4px;position:absolute;bottom:-1px;left:0;right:0;transform:scaleX(0)}.article-page{max-width:46rem;padding:clamp(6rem, 14vh, 8.5rem) var(--gutter) clamp(4rem, 10vh, 6rem);margin:0 auto}.article-head{margin-bottom:clamp(2.5rem,6vh,3.5rem)}.article-kicker{color:var(--muted);margin-bottom:1rem;font-size:.9375rem}.article-kicker a{color:inherit}.article-head h1{margin-bottom:.9rem;font-size:clamp(1.9rem,4vw,2.75rem)}.article-standfirst{color:var(--muted);margin:0 0 1.4rem;font-size:clamp(1.1rem,1.7vw,1.3rem);line-height:1.45}.article-meta{color:var(--muted);border-top:1px solid var(--line);margin:0;padding-top:1.1rem;font-size:.9375rem}.article-note{color:var(--muted);margin:.4rem 0 0;font-size:.9375rem;font-style:italic}.article-hero{margin:2.25rem 0 0}.article-hero img{width:auto;max-width:100%;height:auto;max-height:min(560px,62vh);margin:0 auto;display:block}.article-hero figcaption{color:var(--muted);margin-top:.6rem;font-size:.875rem}.article{font-size:1.125rem;line-height:1.6}.article>*+*{margin-top:1.1rem}.article p{margin-bottom:0}.article h2{border-top:1px solid var(--line);margin:2.75rem 0 0;padding-top:2rem;font-size:clamp(1.3rem,2.1vw,1.55rem)}.article h3{margin:2rem 0 0;font-size:1.2rem}.article strong{font-weight:650}.article ul,.article ol{padding-left:1.4rem}.article ul{list-style:square}.article li{margin-top:.5rem}.article li::marker{color:var(--bar-grey)}.article blockquote{border-left:4px solid var(--bar-grey);color:var(--muted);margin:1.5rem 0;padding:.25rem 0 .25rem 1.25rem}.article blockquote p{margin:0}.article hr{border:0;border-top:1px solid var(--line);margin:3rem 0}.article code{background:var(--raise);padding:.1rem .35rem;font-family:ui-monospace,SF Mono,SFMono-Regular,Menlo,Consolas,monospace;font-size:.875em}.article pre{background:var(--stage);color:#e8eaed;border-left:4px solid var(--yellow);margin:1.5rem 0;padding:1.1rem 1.3rem;overflow-x:auto}.article pre code{color:inherit;background:0 0;padding:0;font-size:.8438rem;line-height:1.6}.article img,.article video{max-width:100%;height:auto}.article figure{margin:1.75rem 0}.article figcaption{color:var(--muted);margin-top:.6rem;font-size:.875rem}.article .diagram{margin:2.25rem 0;position:relative}.article .diagram svg{cursor:zoom-in;width:100%;height:auto;display:block}.diagram-zoom{border:1px solid var(--line);background:var(--white);width:2.25rem;height:2.25rem;color:var(--ink);cursor:zoom-in;opacity:0;place-items:center;padding:0;transition:opacity .2s,border-color .2s;display:grid;position:absolute;top:0;right:0}.article .diagram:hover .diagram-zoom{opacity:1}.diagram-zoom:focus-visible{opacity:1}.diagram-zoom:hover{border-color:var(--ink)}@media (hover:none){.diagram-zoom{opacity:1}}.zoom{background:var(--paper);width:100vw;max-width:none;height:100dvh;max-height:none;color:var(--text);overscroll-behavior:contain;border:0;margin:0;padding:clamp(1rem,3vw,2.5rem)}.zoom[open]{grid-template-rows:auto minmax(0,1fr) auto;gap:1rem;display:grid}.zoom::backdrop{background:var(--paper)}html.zoom-open{overflow:hidden}.zoom-close{border:1px solid var(--line);background:var(--white);width:2.75rem;height:2.75rem;color:var(--ink);cursor:pointer;justify-self:end;place-items:center;padding:0;transition:border-color .2s;display:grid}.zoom-close:hover{border-color:var(--ink)}.zoom-stage{place-items:center;min-height:0;display:grid;overflow:auto}.zoom-stage svg{pointer-events:none;width:100%;max-width:1600px;height:100%;animation:zoom-in .24s var(--oversteer)}.zoom-stage svg *{pointer-events:visiblePainted}@keyframes zoom-in{0%{opacity:0;transform:scale(.94)}}.zoom-caption{text-align:center;max-width:46rem;color:var(--muted);margin:0 auto;font-size:.9375rem}@media (max-width:700px){.zoom-stage{place-items:center start}.zoom-stage svg{width:760px;max-width:none;height:auto}}@media (prefers-reduced-motion:reduce){.zoom-stage svg{animation:none}.diagram-zoom,.zoom-close{transition:none}}.article table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.article th,.article td{border:1px solid var(--line);text-align:left;padding:.5rem .8rem}.article th{font-size:.9375rem}.article .appendix{border:1px solid var(--line);background:var(--raise);margin-top:3rem}.article .appendix summary{cursor:pointer;justify-content:space-between;align-items:center;gap:1rem;padding:1.1rem 1.3rem;font-size:1.1rem;font-weight:600;list-style:none;display:flex}.article .appendix summary::-webkit-details-marker{display:none}.article .appendix summary:after{content:"+";transition:transform .25s var(--oversteer);font-size:1.4rem;line-height:1}.article .appendix[open] summary:after{transform:rotate(45deg)}.article .appendix .appendix-body{border-top:1px solid var(--line);padding:1.1rem 1.3rem 1.3rem}.article .appendix-body>*+*{margin-top:1.1rem}.article .appendix-body>:first-child{margin-top:0}.colophon{border:1px solid var(--line);background:var(--raise);margin-top:3rem;padding:1.3rem 1.5rem}.colophon-label{margin:0 0 .4rem;font-weight:600}.colophon p+p{color:var(--muted);margin:0;font-size:.9375rem;line-height:1.6}.article-footer{padding:0 var(--gutter)}.article-footer .site-footer{border-top:0;margin-top:0}