:root{--ink:#1f2b31;--ink-soft:#4c5a61;--bg:#efebe4;--surface:#f7f4ef;--frost:#e2e9ea;--brand:#1f5f7a;--brand-ink:#134257;--accent:#b85d1d;--line:#dcd6cc;--muted:#8f9a9f;--radius:12px;--measure:70ch;color-scheme:light}:root[data-theme=dark]{--ink:#e1e7ea;--ink-soft:#a8b5bb;--bg:#12191d;--surface:#1a2328;--frost:#1e2c33;--brand:#7cbcd8;--brand-ink:#a8d6ea;--accent:#f0a46a;--line:#2b3940;--muted:#6f7f86;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--ink:#e1e7ea;--ink-soft:#a8b5bb;--bg:#12191d;--surface:#1a2328;--frost:#1e2c33;--brand:#7cbcd8;--brand-ink:#a8d6ea;--accent:#f0a46a;--line:#2b3940;--muted:#6f7f86;color-scheme:dark}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{color:var(--ink);background:var(--bg);margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:1.0625rem;line-height:1.7}img{max-width:100%;height:auto}a{color:var(--brand);text-underline-offset:.18em}a:hover{color:var(--brand-ink)}.wrap{width:min(1120px,100% - 32px);margin-inline:auto}.skip{position:absolute;left:-999px}.skip:focus{background:var(--surface);color:var(--ink);z-index:10;padding:8px 12px;top:16px;left:16px}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:14px 0;display:flex}.brand{color:var(--brand-ink);letter-spacing:-.01em;align-items:center;gap:8px;font-size:1.15rem;font-weight:750;text-decoration:none;display:flex}.brand svg{color:var(--brand)}.site-header nav ul{flex-wrap:wrap;gap:4px 18px;margin:0;padding:0;font-size:.95rem;list-style:none;display:flex}.site-header nav a{color:var(--ink-soft);text-decoration:none}.site-header nav a:hover{color:var(--brand)}.hero{background:linear-gradient(180deg, var(--frost), var(--bg));padding:56px 0 40px}.hero h1{letter-spacing:-.02em;max-width:20ch;margin:0 0 12px;font-size:clamp(2rem,4.5vw,3rem);line-height:1.12}.hero p{color:var(--ink-soft);max-width:60ch;margin:0;font-size:1.15rem}.section{padding:36px 0}.section h2{letter-spacing:-.01em;margin:0 0 18px;font-size:1.45rem}.grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;display:grid}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;gap:6px;padding:18px 20px;transition:border-color .15s,transform .15s;display:flex}.card:hover{border-color:var(--brand);transform:translateY(-2px)}.card a.title{color:var(--ink);font-size:1.08rem;font-weight:700;line-height:1.35;text-decoration:none}.card a.title:after{content:"";position:absolute;inset:0}.card{position:relative}.card p{color:var(--ink-soft);margin:0;font-size:.95rem;line-height:1.55}.pill{text-transform:uppercase;letter-spacing:.06em;color:var(--accent);font-size:.75rem;font-weight:650;display:inline-block}.cat-grid .card{background:var(--frost);border-color:#0000}.article{padding:28px 0 48px}.article-grid{grid-template-columns:minmax(0,1fr);gap:40px;display:grid}@media (width>=980px){.article-grid{grid-template-columns:minmax(0, var(--measure)) 300px;justify-content:space-between}}.crumbs{color:var(--ink-soft);margin:0 0 14px;font-size:.88rem}.crumbs ol{flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;display:flex}.crumbs li+li:before{content:"›";color:var(--muted);margin-right:6px}.article h1{letter-spacing:-.02em;margin:0 0 12px;font-size:clamp(1.9rem,4vw,2.6rem);line-height:1.15}.meta{color:var(--ink-soft);margin-bottom:24px;font-size:.92rem}.lede{color:var(--ink-soft);font-size:1.15rem}.prose{max-width:var(--measure)}.prose h2{letter-spacing:-.01em;margin:2.2em 0 .6em;scroll-margin-top:16px;font-size:1.55rem;line-height:1.25}.prose h3{margin:1.8em 0 .4em;scroll-margin-top:16px;font-size:1.2rem}.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.3em 0}.prose table{border-collapse:collapse;width:100%;margin:1.4em 0;font-size:.95rem;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:8px 12px}.prose th{background:var(--frost)}.prose blockquote{background:var(--frost);border-left:4px solid var(--brand);border-radius:0 var(--radius) var(--radius) 0;margin:1.4em 0;padding:12px 18px}.prose blockquote p{margin:.3em 0}.prose code{background:var(--frost);border-radius:4px;padding:.1em .35em;font-size:.92em}.toc{border-left:2px solid var(--line);padding-left:16px;font-size:.92rem;position:sticky;top:16px}.toc p{margin:0 0 6px;font-weight:700}.toc ol{margin:0;padding:0;list-style:none}.toc li{margin:6px 0;line-height:1.4}.toc a{color:var(--ink-soft);text-decoration:none}.toc a:hover{color:var(--brand)}@media (width<=979px){.toc{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:14px 18px;position:static}}.faq{margin-top:2.4em}.faq details{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin:10px 0;padding:12px 16px}.faq summary{cursor:pointer;font-weight:650}.faq details p{margin:10px 0 2px}.related{border-top:1px solid var(--line);margin-top:3em;padding-top:1.5em}.disclosure{color:var(--ink-soft);background:var(--frost);border-radius:var(--radius);padding:10px 14px;font-size:.86rem}.site-footer{color:#cfdde3;background:#10262f;margin-top:40px;padding:40px 0 20px;font-size:.95rem}.site-footer a{color:#e6f0f4;text-decoration:none}.site-footer a:hover{text-decoration:underline}.footer-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;display:grid}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin:4px 0}.brand-foot{color:#fff;margin:0 0 4px;font-size:1.1rem;font-weight:750}.foot-h{color:#fff;margin:0 0 6px;font-weight:700}.copy{color:#9fb6bf;margin-top:28px;font-size:.82rem}.page{padding:40px 0 56px}.page .prose h1{font-size:2.2rem;line-height:1.2}.header-tools{order:2;margin-left:auto}.theme-toggle{order:3}@media (width<=760px){.header-tools{order:3;width:100%;margin-left:0}.theme-toggle{order:2;margin-left:auto}}.theme-toggle{border:1px solid var(--line);background:var(--surface);width:38px;height:38px;color:var(--ink-soft);cursor:pointer;border-radius:999px;flex:none;justify-content:center;align-items:center;display:inline-flex}.theme-toggle:hover{color:var(--brand);border-color:var(--brand)}.theme-toggle svg{width:18px;height:18px}.theme-toggle .icon-sun{display:none}:root[data-theme=dark] .theme-toggle .icon-sun{display:block}:root[data-theme=dark] .theme-toggle .icon-moon{display:none}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-toggle .icon-sun{display:block}:root:not([data-theme=light]) .theme-toggle .icon-moon{display:none}}.ad-slot{flex-direction:column;align-items:center;gap:4px;max-width:100%;margin:2em auto;display:flex}.ad-label{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-size:.7rem}.ad-box{width:var(--w);min-height:var(--h);justify-content:center;align-items:center;max-width:100%;display:flex;overflow:hidden}@media (width<=499px){.ad-box{width:var(--mw,var(--w));min-height:var(--mh,var(--h))}}.ad-after-intro{margin:1.4em auto 1.8em}.ad-box img{display:block}.sidebar{flex-direction:column;gap:28px;display:flex}.sidebar .toc{position:static}.ad-sidebar{margin:0}@media (width>=980px){.sidebar{align-self:start;position:sticky;top:16px}}@media (width<=979px){.ad-sidebar{display:none}}.hub-intro{margin-bottom:28px;font-size:1.08rem}.hub-intro p:first-child{margin-top:0}