:root{
  --bg:#ffffff; --bg-subtle:#f8f9fa; --bg-box:#f8f9fa; --text:#202122; --muted:#54595d;
  --link:#3366cc; --link-visited:#795cb2; --border:#a2a9b1; --border-light:#c8ccd1;
  --accent:#36c; --header:#ffffff; --hl:#eaf3ff; --pending:#a35200;
  --serif:'Linux Libertine','Libertinus Serif',Georgia,'Times New Roman',serif;
  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Inter,'Helvetica Neue',Arial,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#101418; --bg-subtle:#161b21; --bg-box:#1b2128; --text:#eaecf0; --muted:#a2a9b1;
    --link:#88a3e8; --link-visited:#a799cd; --border:#54595d; --border-light:#3a3f45;
    --accent:#88a3e8; --header:#101418; --hl:#1f2a3a; --pending:#f0a35e; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#101418; --bg-subtle:#161b21; --bg-box:#1b2128; --text:#eaecf0; --muted:#a2a9b1;
  --link:#88a3e8; --link-visited:#a799cd; --border:#54595d; --border-light:#3a3f45;
  --accent:#88a3e8; --header:#101418; --hl:#1f2a3a; --pending:#f0a35e; color-scheme:dark;
}
*{box-sizing:border-box}
.skip{position:absolute;left:-9999px;top:8px;z-index:30;background:var(--bg);color:var(--link);padding:8px 12px;border:1px solid var(--border)}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
html{scroll-behavior:smooth;scroll-padding-top:70px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.6}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
a.ext::after{content:"";display:inline-block;width:.7em;height:.7em;margin-left:.2em;background:currentColor;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M6 1h5v5L9 4 5.5 7.5 4.5 6.5 8 3zM2 3h3v1H3v5h5V7h1v3H2z'/%3E%3C/svg%3E") no-repeat center/contain;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M6 1h5v5L9 4 5.5 7.5 4.5 6.5 8 3zM2 3h3v1H3v5h5V7h1v3H2z'/%3E%3C/svg%3E") no-repeat center/contain;opacity:.7}

/* Header */
.header{position:sticky;top:0;z-index:10;background:var(--header);border-bottom:1px solid var(--border-light)}
.header-inner{max-width:1440px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:8px 24px;height:58px}
.menu-btn{background:none;border:0;color:var(--text);padding:6px;border-radius:2px;cursor:pointer;display:flex}
.menu-btn:hover{background:var(--bg-subtle)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand img{flex:none;display:block}
.wordmark{display:flex;flex-direction:column;line-height:1.1}
.wordmark b{font-family:var(--serif);font-weight:400;font-size:21px;letter-spacing:.06em;font-variant:small-caps}
.wordmark small{font-family:var(--serif);font-size:12px;color:var(--muted);letter-spacing:.02em}
.tools{margin-left:auto;display:flex;gap:14px;align-items:center;font-size:14px}
.theme-btn{background:none;border:1px solid var(--border-light);color:var(--text);border-radius:2px;padding:6px 12px;font:inherit;font-size:13px;cursor:pointer}

/* Layout */
.page{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:176px 1fr;gap:0 24px;padding:0 24px}
.sidebar{padding-top:24px;font-size:14px;position:sticky;top:58px;align-self:start;max-height:calc(100vh - 58px);overflow:auto}
.side-h{font-size:12px;font-weight:700;color:var(--muted);margin:0 0 6px;padding-bottom:4px;border-bottom:1px solid var(--border-light);font-family:var(--sans)}
.sidebar ul{list-style:none;margin:0 0 20px;padding:0}
.sidebar li{padding:3px 0}
.toc a{display:block;color:var(--text)}
.toc a.active{font-weight:700}
.toc ul ul{padding-left:12px;margin:0}
.toc .num{color:var(--muted);margin-right:4px}
body.nav-hidden .page{grid-template-columns:0 1fr}
body.nav-hidden .sidebar{display:none}

main{min-width:0;padding-bottom:40px}
.title-bar{border-bottom:1px solid var(--border);margin-top:16px;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap}
h1{font-family:var(--serif);font-weight:400;font-size:2em;line-height:1.3;margin:0 0 4px}
.tabs{display:flex;justify-content:space-between;font-size:14px;border-bottom:1px solid var(--border-light);margin-bottom:12px;overflow-x:auto}
.tabs nav{display:flex}
.tabs a{padding:8px 8px 6px;color:var(--link);border-bottom:2px solid transparent;white-space:nowrap}
.tabs a.sel{color:var(--text);border-bottom-color:var(--text)}
.tabs a:hover{text-decoration:none;border-bottom-color:var(--border)}
.tagline{font-size:13px;color:var(--muted);margin:0 0 12px}
.hatnote{font-style:italic;padding-left:1.6em;margin:0 0 10px;font-size:15px}

.content{font-size:15.5px}
.content p{margin:.5em 0 1em}
.content ul,.content ol{padding-left:1.6em}
.content li{margin:.2em 0}
h2{font-family:var(--serif);font-weight:400;font-size:1.6em;line-height:1.3;border-bottom:1px solid var(--border);margin:1.2em 0 .3em;padding-bottom:2px}
h3.sub{font-size:1.15em;font-weight:700;margin:1.1em 0 .2em}
sup.ref{font-size:.72em;line-height:1;white-space:nowrap}
.pending{color:var(--pending);font-size:.9em;font-style:italic}

/* Official links bar */
.official-bar{display:flex;flex-wrap:wrap;gap:6px 8px;align-items:center;border:1px solid var(--border-light);background:var(--bg-subtle);padding:8px 10px;margin:0 0 1em;font-size:14px}
.official-bar a{border:1px solid var(--border-light);background:var(--bg);border-radius:999px;padding:2px 10px;white-space:nowrap}
.official-bar a:hover{text-decoration:none;border-color:var(--link)}

/* Infobox */
.infobox{float:right;clear:right;width:300px;margin:0 0 16px 20px;border:1px solid var(--border);background:var(--bg-box);font-size:13.5px;line-height:1.5;padding:8px;border-spacing:3px}
.infobox caption{font-weight:700;font-size:125%;padding:6px 4px 2px}
.infobox th,.infobox td{vertical-align:top;text-align:left;padding:4px 8px}
.infobox th{width:38%;font-weight:700}
.infobox .img{text-align:center;padding:6px 4px}
.infobox .photo{display:block;width:100%;max-width:240px;height:auto;margin:0 auto;border:1px solid var(--border-light)}
.infobox .cap{font-size:12px;color:var(--muted);text-align:center}
.infobox .hdr{background:var(--hl);text-align:center;font-weight:700}

/* Lists, tables, boxes */
table.wikitable{border-collapse:collapse;margin:0;font-size:14px;background:var(--bg-subtle);border:1px solid var(--border);max-width:100%}
.wikitable th,.wikitable td{border:1px solid var(--border);padding:8px 12px;text-align:left;vertical-align:top}
.wikitable th{background:var(--bg-box)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1em 0}
.cols{columns:2 260px;column-gap:2em}
.cols li{break-inside:avoid}
ol.refs{font-size:13.5px;padding-left:2em}
ol.refs li:target{background:var(--hl)}
.navbox{clear:both;border:1px solid var(--border);margin-top:2em;font-size:13.5px}
.navbox .nb-title{background:var(--hl);text-align:center;font-weight:700;padding:8px 12px}
.navbox .row{display:grid;grid-template-columns:150px 1fr;border-top:2px solid var(--bg)}
.navbox .row div:first-child{background:var(--bg-box);font-weight:700;text-align:right;padding:8px 12px}
.navbox .row div:last-child{padding:8px 12px}
.navbox .row a+a::before{content:" · ";font-weight:700;color:var(--text)}
.catlinks{border:1px solid var(--border);background:var(--bg-subtle);padding:10px 14px;margin-top:1.5em;font-size:13.5px}
footer{border-top:1px solid var(--border-light);margin-top:2em;padding-top:12px;font-size:12.5px;color:var(--muted)}
footer ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:4px 16px}
.nf{max-width:640px;margin:10vh auto;padding:0 16px;text-align:center}
.clear{clear:both}

@media (max-width:900px){
  .page{grid-template-columns:1fr;padding:0 16px}
  .sidebar{display:none}
  body.nav-open .sidebar{display:block;position:fixed;left:0;top:58px;bottom:0;width:260px;background:var(--bg);padding:16px;border-right:1px solid var(--border-light);z-index:9;max-height:none}
  .header-inner{padding:8px 16px;gap:8px}
  .wordmark small,.tools .hide-sm{display:none}
}
@media (max-width:640px){
  .infobox{float:none;width:100%;margin:0 0 16px}
  .navbox .row{grid-template-columns:1fr}
  .navbox .row div:first-child{text-align:left}
}
@media print{.header,.sidebar,.tabs,footer ul{display:none}.page{display:block}}

/* Photos gallery */
.gallery{list-style:none;margin:0 0 .6em;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.gallery img{width:100%;aspect-ratio:4/5;object-fit:cover;display:block;border:1px solid var(--border-light)}
.gallery-note{font-size:.9em;color:var(--muted)}
@media (max-width:640px){.gallery{grid-template-columns:repeat(2,1fr)}}

/* Long reference URLs wrap on phones */
.refs a,.refs i{overflow-wrap:anywhere;word-break:break-word}