:root{color-scheme:light;--bg:#fff;--header:#fff;--surface:#f4f4f4;--surface-2:#ececec;--ink:#0a0a0a;--muted:#666;--text-soft:#454545;--line:#dedede;--line-strong:#b5b5b5;--bar:#8a8a8a;--bar-2:#111;--track:#ececec;--callout:#f7f7f7;--callout-line:#cfcfcf;--btn-bg:#fff;--btn-border:#b5b5b5}
:root[data-theme="dark"]{color-scheme:dark;--bg:#000;--header:#030303;--surface:#0c0c0c;--surface-2:#141414;--ink:#eeeeed;--muted:#a7a7a7;--text-soft:#b8b8b8;--line:#323232;--line-strong:#626262;--bar:#8c8c8c;--bar-2:#eeeeed;--track:#181818;--callout:#0c0c0c;--callout-line:#4a4a4a;--btn-bg:#080808;--btn-border:#606060}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}
button{font:inherit}
h1,h2,h3{font-weight:400}
h1,h2{letter-spacing:-.045em}
::selection{background:var(--ink);color:var(--bg)}
:focus-visible{outline:1px solid var(--ink);outline-offset:3px}
.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}

/* Header */
.top{position:sticky;top:0;z-index:20;background:var(--header);border-bottom:1px solid var(--line)}
.header-inner{max-width:1180px;margin:0 auto;padding:0 24px;height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand-signature{display:flex;align-items:center;gap:28px;min-width:0}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font:700 16px Arial,Helvetica,sans-serif;letter-spacing:.02em;text-transform:uppercase}
.brand-mark{width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line-strong);border-radius:2px;font:10px Consolas,"Courier New",monospace;letter-spacing:.04em}
.brand-role{border-left:1px solid var(--line-strong);padding-left:28px;color:var(--muted);font:11px/1.5 Consolas,"Courier New",monospace;letter-spacing:.055em;text-transform:uppercase;white-space:nowrap}
.header-actions{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav{font:11px Consolas,"Courier New",monospace;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);text-decoration:none;padding:6px 0;border-bottom:1px solid transparent}
.nav:hover{color:var(--ink);border-bottom-color:var(--line-strong)}
.theme-toggle{min-width:74px;height:40px;padding:0 10px;background:transparent;border:1px solid var(--line);border-radius:2px;color:var(--muted);font:11px Consolas,"Courier New",monospace;letter-spacing:.03em;text-transform:uppercase;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s}
.theme-toggle:hover{background:var(--surface-2);border-color:var(--line-strong);color:var(--ink)}

/* Layout */
.layout{position:relative;max-width:1180px;margin:0 auto;display:grid;grid-template-columns:276px minmax(0,1fr);align-items:start;min-height:calc(100vh - 76px)}
.layout::before{content:"";position:absolute;top:0;bottom:0;left:276px;width:1px;background:var(--line)}
.sidebar{position:sticky;top:76px;min-height:calc(100vh - 76px);max-height:calc(100vh - 76px);overflow-y:auto;padding:34px 24px 32px}
.side-heading{display:flex;align-items:center;gap:12px;margin:0 0 4px;font:11px Consolas,"Courier New",monospace;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.side-heading::after{content:"";flex:1;height:1px;background:var(--line)}
.side-nav{display:flex;flex-direction:column}
.side-link{display:grid;grid-template-columns:24px minmax(0,1fr);gap:8px;padding:13px 0 13px 12px;border-top:1px solid var(--line);border-left:2px solid transparent;text-decoration:none;color:var(--muted);transition:color .15s,border-color .15s}
.side-link:last-child{border-bottom:1px solid var(--line)}
.side-link:hover{color:var(--ink)}
.side-link.current{color:var(--ink);border-left-color:var(--ink)}
.side-num{font:11px Consolas,"Courier New",monospace;padding-top:3px;color:var(--muted)}
.side-title{font-size:14px;line-height:1.4}
.side-meta{grid-column:2;font:10.5px Consolas,"Courier New",monospace;color:var(--muted);margin-top:3px}

/* Main */
.main-content{min-width:0;padding:0 64px 88px}
.hero{padding:64px 0 60px}
.hero-identity{margin:0 0 4px;color:var(--muted);font-size:14px}
.hero h1{max-width:16ch;font-size:clamp(42px,5vw,66px);line-height:1.1;letter-spacing:-.045em;margin:0 0 24px}
.tagline{max-width:57ch;margin:0;font-size:17px;line-height:1.65;color:var(--muted)}
.hero-actions{display:flex;align-items:flex-start;gap:44px;flex-wrap:wrap;margin-top:35px}
.btn{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;min-height:44px;padding:10px 18px;background:var(--btn-bg);border:1px solid var(--btn-border);border-radius:2px;color:var(--ink);font:13px/1.4 Consolas,"Courier New",monospace;text-decoration:none;transition:background-color .15s,border-color .15s}
.btn:hover{background:var(--surface-2);border-color:var(--line-strong)}

/* Sections */
.section{padding:48px 0 54px;border-top:1px solid var(--line)}
.section-label{display:flex;align-items:center;gap:14px;margin:0 0 32px;font:12px Consolas,"Courier New",monospace;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.section-index{order:-2;color:var(--muted)}
.section-label::before{content:"";order:-1;flex:0 0 34px;height:1px;background:var(--line-strong)}
.about-layout{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;align-items:start}
.about-copy h2{font-size:clamp(30px,3vw,44px);line-height:1.15;max-width:18ch;margin:0 0 20px}
.notes{display:grid;gap:22px}
.note{position:relative;padding-left:16px}
.note::before{content:"";position:absolute;left:0;top:8px;width:4px;height:4px;background:var(--muted)}
.note h3{font-size:14px;font-weight:600;margin:0 0 4px}
.note p{margin:0;font-size:13px;line-height:1.6;color:var(--muted);max-width:52ch}
.dev-links{display:flex;flex-wrap:wrap;gap:8px 20px;margin:0;padding-left:16px;font:12px/1.8 Consolas,"Courier New",monospace;color:var(--muted)}
.dev-links a{text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:2px}
.dev-links a:hover{color:var(--ink);border-bottom-color:var(--ink)}

/* Page list */
.pages-list{display:grid}
.page-row{display:grid;grid-template-columns:60px minmax(180px,.9fr) minmax(220px,1.1fr) 28px;gap:26px;align-items:center;min-height:112px;padding:23px 0;border-bottom:1px solid var(--line-strong);text-decoration:none;transition:background-color .2s}
.page-row:hover{background:var(--surface)}
.page-num{font:11px Consolas,"Courier New",monospace;color:var(--muted)}
.page-title{display:block;font-size:21px;font-weight:500;line-height:1.3;letter-spacing:-.02em;margin:0 0 5px}
.page-kind{display:block;font:11px Consolas,"Courier New",monospace;letter-spacing:.02em;text-transform:uppercase;color:var(--muted)}
.page-desc{margin:0;padding:0 34px;border-left:1px solid var(--line-strong);font-size:14px;line-height:1.6;color:var(--text-soft)}
.page-arrow{justify-self:end;color:var(--muted)}
.page-row:hover .page-arrow{color:var(--ink)}

/* Article */
.article-body{max-width:800px;padding-top:36px;font-size:18px;line-height:1.8}
.tag{display:inline-block;border:1px solid var(--line);border-radius:2px;padding:4px 8px;font:11px Consolas,"Courier New",monospace;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.article-body h1{margin:20px 0 22px;font-size:clamp(36px,4.6vw,56px);line-height:1.08}
.article-body>.intro{max-width:57ch;margin:0 0 38px;font-size:17px;line-height:1.65;color:var(--muted)}
.muted{color:var(--muted)}
.specs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:34px 0 4px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.spec{padding:18px 20px 18px 0;border-right:1px solid var(--line)}
.spec:last-child{border-right:0}
.spec strong{display:block;font-size:32px;font-weight:400;letter-spacing:-.045em;line-height:1.1}
.spec span{display:block;margin-top:6px;font:11px Consolas,"Courier New",monospace;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.panel{margin:46px 0 52px}
.panel h2{font-size:24px;margin:0 0 10px}
.legend{display:flex;gap:20px;flex-wrap:wrap;margin:18px 0 26px;font:11px Consolas,"Courier New",monospace;letter-spacing:.02em;text-transform:uppercase;color:var(--muted)}
.legend i{display:inline-block;width:8px;height:8px;background:var(--bar);margin-right:7px}
.legend .second{background:var(--bar-2)}
.test{margin:26px 0}
.test h3{font-size:13px;font-weight:600;margin:0 0 10px;letter-spacing:0}
.bar{display:grid;grid-template-columns:70px minmax(0,1fr) 54px;gap:10px;align-items:center;margin:6px 0;font-size:12.5px}
.track{height:12px;background:var(--track);border-radius:0}
.fill{display:block;height:100%;width:var(--pct);background:var(--bar)}
.fill.second{background:var(--bar-2)}
.pct{text-align:right;font:11px Consolas,"Courier New",monospace;color:var(--muted)}
.data{width:100%;border-collapse:collapse;font-size:12.5px;margin-top:28px}
.data th,.data td{text-align:left;border-bottom:1px solid var(--line);padding:10px 0}
.data th:not(:first-child),.data td:not(:first-child){text-align:right}
.data th{font:10.5px Consolas,"Courier New",monospace;font-weight:400;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}
.data tbody tr:hover{background:var(--surface)}
.source{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line-strong)}
.source:hover{border-bottom-color:var(--ink)}
.callout{max-width:640px;border-left:1px solid var(--line-strong);padding:0 0 0 16px;margin-top:26px;font-size:13px;line-height:1.6;color:var(--muted)}
.content{max-width:720px;margin-top:8px}
.content h2{font-size:24px}
.content p{font-size:15px;color:var(--text-soft)}
.content ul{list-style:none;margin:0;padding:0}
.content li{position:relative;margin:9px 0;padding-left:16px;font-size:15px;color:var(--text-soft)}
.content li::before{content:"";position:absolute;left:0;top:9px;width:4px;height:4px;background:var(--muted)}

/* Footer */
.footer{border-top:1px solid var(--line);padding:28px 0}
.footer-inner{max-width:1180px;margin:auto;padding:0 24px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font:11px Consolas,"Courier New",monospace;letter-spacing:.02em;text-transform:uppercase;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px}
.footer a{text-decoration:none}
.footer a:hover{color:var(--ink)}

@media(max-width:1100px){
.brand-role{display:none}
.main-content{padding:0 40px 72px}
.page-row{grid-template-columns:42px minmax(0,1fr) 24px;gap:20px;align-items:start}
.page-desc{grid-column:2 / 4;border-left:0;padding:10px 0 0}
.page-arrow{grid-column:3;grid-row:1}
}

@media(max-width:900px){
.layout{grid-template-columns:1fr;min-height:0}
.layout::before{display:none}
.sidebar{position:static;min-height:0;max-height:none;overflow:visible;border-bottom:1px solid var(--line);padding:16px 20px 14px}
.side-heading{margin-bottom:10px}
.side-nav{flex-direction:row;gap:6px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}
.side-nav::-webkit-scrollbar{display:none}
.side-link{flex:0 0 auto;grid-template-columns:auto auto;gap:7px;padding:7px 11px;border:1px solid var(--line);border-left:2px solid transparent}
.side-link:last-child{border-bottom:1px solid var(--line)}
.side-link.current{border-color:var(--line-strong);border-left-color:var(--ink);background:var(--surface)}
.side-num{padding-top:1px}
.side-title{white-space:nowrap;font-size:12.5px}
.side-meta{display:none}
.main-content{padding:0 22px 64px}
.hero{padding:44px 0 44px}
.about-layout{grid-template-columns:1fr;gap:30px}
}

@media(max-width:700px){
.header-inner{height:64px;padding:0 18px;gap:16px}
.brand{font-size:14px;gap:9px}
.brand-mark{width:30px;height:30px}
.header-actions{gap:15px}
.theme-toggle{min-width:66px;height:38px}
.sidebar{padding:14px 18px 12px}
.main-content{padding:0 18px 56px}
.article-body{padding-top:22px}
.hero{padding:36px 0 38px}
.hero h1{font-size:clamp(38px,12vw,52px)}
.hero-actions{gap:26px}
.page-row{grid-template-columns:32px minmax(0,1fr) 24px;gap:14px;min-height:0;padding:20px 0;align-items:start}
.page-title{font-size:19px}
.page-desc{grid-column:2 / 4;border-left:0;padding:10px 0 0}
.page-arrow{grid-column:3;grid-row:1;align-self:center}
.page-num{padding-top:2px}
.specs{grid-template-columns:repeat(3,minmax(0,1fr))}
.spec{padding-right:10px}
.spec strong{font-size:25px}
.spec span{font-size:9.5px;letter-spacing:0}
.bar{grid-template-columns:56px minmax(0,1fr) 50px;gap:7px}
.footer-inner{padding:0 18px}
}

@media(prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*{transition:none!important}
}

/* Shared article feedback widget — CounterAPI.com, no backend */
.article-engagement{max-width:720px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px;margin:58px 0 14px;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.engagement-copy{display:grid;gap:5px}
.engagement-heading{font-size:15px;font-weight:600;line-height:1.35}
.engagement-note{font-size:12px;line-height:1.5;color:var(--muted)}

@media(max-width:700px){.article-engagement{margin-top:42px;padding:20px 0;gap:12px}}

.engagement-actions{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.article-like-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:9px 14px;border:1px solid var(--line-strong);border-radius:2px;background:var(--bg);color:var(--ink);font:13px/1.3 Consolas,"Courier New",monospace;white-space:nowrap;cursor:pointer;transition:background-color .15s,border-color .15s}
.article-like-button:hover:not(:disabled){background:var(--surface);border-color:var(--ink)}
.article-like-button:disabled{cursor:default;opacity:.72}
.article-like-button.is-liked{border-color:var(--ink);opacity:1}
.article-like-heart{width:17px;height:17px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.article-like-button.is-liked .article-like-heart{fill:currentColor}
.article-like-status{min-height:16px;max-width:260px;text-align:right;font:11px/1.5 Consolas,"Courier New",monospace;color:var(--muted)}
@media(max-width:700px){.engagement-actions{align-items:flex-start}.article-like-status{text-align:left}}

/* Research publishing components. Scoped to preserve legacy charts and layouts. */
.skip-link{position:fixed;top:8px;left:12px;z-index:100;padding:12px;background:var(--ink);color:var(--bg);transform:translateY(-180%)}
.skip-link:focus{transform:none}
.article-body{overflow-wrap:anywhere}
.article-body img{max-width:100%;height:auto}
.article-body h2,.article-body h3,.article-body [id]{scroll-margin-top:100px}
.article-tools{display:grid;gap:14px;margin:26px 0 38px;border-block:1px solid var(--line);padding:20px 0}
.simple-jump{justify-self:start;font-size:12px}
.article-toc summary{cursor:pointer;min-height:32px;font:12px/1.6 Consolas,"Courier New",monospace;color:var(--muted)}
.article-toc ol{display:grid;grid-template-columns:1fr 1fr;gap:10px 28px;padding-left:22px;margin:14px 0 0;font-size:13px}
.article-toc a{text-underline-offset:4px}
.article-meta{display:flex;flex-wrap:wrap;gap:6px 20px;font:11px/1.7 Consolas,"Courier New",monospace;color:var(--muted);margin:16px 0}
/* One reading rhythm for new investigations and the legacy article layouts. */
.article-body>section:not(.article-engagement){margin:64px 0}
.article-body h2{font-size:clamp(30px,3vw,36px);font-weight:600;line-height:1.22;letter-spacing:-.025em;margin:56px 0 22px}
.article-body>section>h2:first-child{margin-top:0}
.article-body h3{font-size:24px;font-weight:600;line-height:1.35;margin:40px 0 16px;letter-spacing:-.015em}
.article-body h2+h3{margin-top:28px}
.article-body .test h3{font-size:14px;line-height:1.5;margin:0 0 12px;letter-spacing:0}
.research-article p,.research-article ul,.research-article ol{max-width:66ch}
.research-article p{margin:0 0 25px;color:var(--text-soft)}
.article-body>p:not([class]),.article-body>.panel>p:not([class]),.article-body>.panel>p.muted,.article-body>.content>p{max-width:66ch;font-size:inherit;line-height:inherit;margin:0 0 25px;color:var(--text-soft)}
.article-body>.content li{font-size:inherit;line-height:inherit;margin-bottom:12px}
.research-article li{margin-bottom:12px}
.article-body>.intro{font-size:19px;line-height:1.7}
.research-article a{text-underline-offset:4px}
.research-article blockquote{margin:36px 0;padding:22px 26px;border-left:2px solid var(--line-strong);background:var(--surface)}
.research-article blockquote p:last-child{margin-bottom:0}
.research-article code{font: .86em/1.6 Consolas,"Courier New",monospace;padding:2px 5px;background:var(--surface-2);border-radius:2px}
.research-article pre{max-width:100%;overflow-x:auto;border:1px solid var(--line);background:var(--surface);padding:20px;font-size:13px;line-height:1.7;tab-size:2}
.research-article pre code{background:none;padding:0;white-space:pre;overflow-wrap:normal;font-size:inherit}
.evidence-note,.plain-english{border:1px solid var(--line);background:var(--surface);padding:28px;margin:36px 0}
.evidence-note p:last-child,.plain-english p:last-child{margin-bottom:0}
.evidence-label{display:inline-block;font:10px/1.5 Consolas,"Courier New",monospace;text-transform:uppercase;letter-spacing:.04em;border:1px solid var(--line-strong);padding:3px 7px;margin:0 8px 7px 0;color:var(--ink)}
[data-evidence="unconfirmed"]{border-style:dashed}
.citation{display:inline-block;font:12px/1.5 Consolas,"Courier New",monospace;vertical-align:super;padding:0 3px;white-space:nowrap}
.source-list{padding-left:26px;font-size:14px;line-height:1.75}
.source-list>li{padding:16px 0 16px 8px;border-bottom:1px solid var(--line)}
.source-list>li:target{background:var(--surface-2);outline:1px solid var(--line-strong)}
.source-list time,.source-detail{display:block;color:var(--muted);font-size:12px;margin-top:6px}
.source-returns{display:flex;flex-wrap:wrap;gap:14px;margin-top:9px;font-size:12px}
.table-scroll{max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain;margin:36px 0;border:1px solid var(--line)}
.research-table{width:100%;border-collapse:collapse;min-width:500px;font-size:14px;line-height:1.7}
.research-table caption{text-align:left;padding:14px;color:var(--muted);font-size:12px}
.research-table th,.research-table td{text-align:left;vertical-align:top;border-top:1px solid var(--line);padding:16px}
.research-table th{font-weight:600}
.timeline{list-style:none;padding:0 0 0 22px;border-left:1px solid var(--line-strong)}
.timeline>li{position:relative;padding:0 0 24px 5px}
.timeline>li::before{content:"";position:absolute;left:-27px;top:9px;width:8px;height:8px;background:var(--ink);border:2px solid var(--bg)}
.timeline time{display:block;font:11px/1.7 Consolas,"Courier New",monospace;color:var(--muted);margin-bottom:7px}
.article-figure{margin:40px 0;min-width:0}
.article-figure>a[data-lightbox]{display:block;border:1px solid var(--line);background:var(--surface);cursor:zoom-in}
.article-figure img{display:block;width:100%;object-fit:contain}
.article-figure figcaption{font-size:13px;line-height:1.7;color:var(--muted);padding-top:14px}
.figure-credit{display:block;margin-top:4px}
.image-fallback{padding:24px;border:1px dashed var(--line-strong);font-size:14px;background:var(--surface)}
.figure-comparison{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:28px 0}
.figure-comparison .article-figure{margin:0}
.figure-label{display:block;font:11px/1.5 Consolas,"Courier New",monospace;text-transform:uppercase;margin-bottom:10px;color:var(--muted)}
.image-dialog{max-width:min(1200px,96vw);max-height:94dvh;padding:18px;background:var(--bg);color:var(--ink);border:1px solid var(--line-strong);overscroll-behavior:contain}
.image-dialog::backdrop{background:rgba(0,0,0,.78)}
.image-dialog img{display:block;max-width:100%;max-height:70dvh;object-fit:contain;margin:18px auto}
.image-dialog-caption{font-size:13px;max-width:85ch;color:var(--muted)}
.image-close{cursor:pointer;display:flex;margin-left:auto}
.image-open{overflow:hidden}
@media(max-width:700px){
 .article-body{font-size:17px;line-height:1.75}
 .article-body>section:not(.article-engagement){margin:48px 0}
 .article-body h2{font-size:28px;margin:42px 0 20px}
 .article-body h3{font-size:22px;margin:32px 0 14px}
 .article-body>.intro{font-size:18px}
 .research-article p,.article-body>p:not([class]),.article-body>.panel>p:not([class]),.article-body>.panel>p.muted,.article-body>.content>p{margin-bottom:24px}
 .article-toc ol{grid-template-columns:1fr}
 .figure-comparison{grid-template-columns:1fr;gap:28px}
 .evidence-note,.plain-english{padding:18px}
 .research-article blockquote{padding:18px}
 .research-article pre{padding:14px}
 .article-meta{gap:6px 14px}
}
@media(max-width:370px){.header-actions{gap:10px}.header-actions .nav{font-size:10px}.brand{font-size:12px}.theme-toggle{min-width:52px}}
@media print{
 .top,.sidebar,.footer,.article-engagement,.article-tools,.skip-link{display:none}
 .layout{display:block}.layout::before{display:none}.main-content{padding:0}.article-body{max-width:none}
 .table-scroll,pre{overflow:visible}.article-figure{break-inside:avoid}
}

/* Section buttons echo the portfolio's direct anchor navigation. */
.article-quicknav{position:sticky;top:76px;z-index:15;display:flex;align-items:center;gap:12px;background:var(--bg);border-block:1px solid var(--line-strong);margin:0 0 34px;padding:8px 0;isolation:isolate;font:11px/1.4 Consolas,"Courier New",monospace}
.quicknav-links{display:flex;flex:1;min-width:0;gap:6px;overflow-x:auto;overscroll-behavior-inline:contain;padding:3px;scrollbar-width:thin}
.quicknav-links a{display:flex;align-items:center;min-height:40px;padding:8px 10px;white-space:nowrap;text-decoration:none;border:1px solid var(--line);color:var(--muted)}
.quicknav-links a:hover,.quicknav-links a[aria-current="location"]{background:var(--surface-2);border-color:var(--line-strong);color:var(--ink)}
.quicknav-controls{display:flex;gap:5px;flex-shrink:0;padding:3px}
.quicknav-controls button,.quicknav-controls a{min-width:36px;min-height:40px;display:grid;place-items:center;padding:8px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;text-decoration:none;cursor:pointer}
.quicknav-controls button:disabled{opacity:.35;cursor:default}
.article-body h2,.article-body h3,.article-body [id]{scroll-margin-top:72px}
@media(max-width:700px){.article-quicknav{top:64px;gap:5px;margin-bottom:28px}.quicknav-links a{padding:8px;font-size:10px}.quicknav-controls a{font-size:10px}.quicknav-controls button,.quicknav-controls a{min-width:32px}.article-body [id]{scroll-margin-top:60px}}
@media print{.article-quicknav{display:none}}
/* Allow the mobile index to scroll inside its grid track, not widen the page. */
.sidebar{min-width:0}
@media(max-width:900px){.layout{grid-template-columns:minmax(0,1fr)}}