*,*::before,*::after{box-sizing:border-box}

  :root{
    --chrome:#f8f9fa;        /* sidebar + page ground */
    --paper:#ffffff;         /* article surface */
    --ink:#202122;
    --ink-2:#54595d;
    --border:#a2a9b1;
    --border-soft:#c8ccd1;
    --link:#3366cc;
    --link-visited:#795cb2;
    --link-red:#d73333;
    --box:#f8f9fa;
    --tab-active:#ffffff;
    --serif:"Linux Libertine",Georgia,"Times New Roman",Times,serif;
    --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  }
  @media (prefers-color-scheme:dark){
    :root:not([data-theme="light"]){
      --chrome:#101418; --paper:#1b1f24; --ink:#eaecf0; --ink-2:#a2a9b1;
      --border:#54595d; --border-soft:#404650; --link:#88a3e8; --link-visited:#b397dd;
      --link-red:#f88; --box:#23282e; --tab-active:#1b1f24;
    }
  }
  :root[data-theme="dark"]{
    --chrome:#101418; --paper:#1b1f24; --ink:#eaecf0; --ink-2:#a2a9b1;
    --border:#54595d; --border-soft:#404650; --link:#88a3e8; --link-visited:#b397dd;
    --link-red:#f88; --box:#23282e; --tab-active:#1b1f24;
  }
  @media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

  body{
    margin:0;background:var(--chrome);color:var(--ink);
    font-family:var(--sans);font-size:14px;line-height:1.6;
  }
  a{color:var(--link);text-decoration:none}
  a:visited{color:var(--link-visited)}
  a:hover{text-decoration:underline}
  a.new{color:var(--link-red)}
  :focus-visible{outline:2px solid var(--link);outline-offset:1px}

  /* ---------- SHELL ---------- */
  .wiki{display:grid;grid-template-columns:176px 1fr;align-items:start;min-height:100vh}
  @media (max-width:880px){.wiki{grid-template-columns:1fr}}

  /* ---------- SIDEBAR ---------- */
  .side{padding:14px 12px 40px;font-size:12.6px}
  @media (max-width:880px){.side{border-bottom:1px solid var(--border-soft)}}
  .brand{display:flex;flex-direction:column;gap:2px;margin-bottom:22px;padding-left:2px}
  .brand .mark{font-family:var(--serif);font-size:19px;line-height:1.1;color:var(--ink)}
  .brand .tag{font-size:10.5px;color:var(--ink-2);letter-spacing:.02em}
  .side nav{margin-bottom:18px}
  .side nav h3{font-size:11px;font-weight:400;color:var(--ink-2);margin:0 0 5px;padding-bottom:3px;border-bottom:1px solid var(--border-soft)}
  .side nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}

  /* ---------- MAIN ---------- */
  .main{background:var(--paper);border-left:1px solid var(--border-soft);min-width:0}
  @media (max-width:880px){.main{border-left:none}}

  .topbar{display:flex;gap:10px;align-items:center;padding:10px 20px 0;flex-wrap:wrap}
  .tabs{display:flex;gap:1px;font-size:12.6px}
  .tabs a{padding:5px 11px;border:1px solid var(--border-soft);border-bottom:none;background:var(--chrome);color:var(--link);border-radius:2px 2px 0 0}
  .tabs a.sel{background:var(--tab-active);color:var(--ink);font-weight:600;position:relative;top:1px}
  .searchbox{margin-left:auto;display:flex}
  .searchbox input{font-family:var(--sans);font-size:12.6px;padding:5px 9px;border:1px solid var(--border);background:var(--paper);color:var(--ink);width:210px;border-radius:2px 0 0 2px}
  .searchbox button{font-family:var(--sans);font-size:12.6px;padding:5px 11px;border:1px solid var(--border);border-left:none;background:var(--chrome);color:var(--ink-2);cursor:pointer;border-radius:0 2px 2px 0}
  @media (max-width:620px){.searchbox{margin-left:0;width:100%}.searchbox input{flex:1;width:auto}}

  .article{padding:6px 20px 46px;max-width:none}
  h1.title{font-family:var(--serif);font-weight:400;font-size:28px;line-height:1.25;margin:10px 0 0;padding-bottom:5px;border-bottom:1px solid var(--border-soft)}
  .fromline{font-style:italic;color:var(--ink-2);font-size:13px;margin:5px 0 14px}

  .article h2{font-family:var(--serif);font-weight:400;font-size:22px;margin:26px 0 0;padding-bottom:4px;border-bottom:1px solid var(--border-soft);clear:none}
  .article h3{font-family:var(--sans);font-weight:700;font-size:15px;margin:20px 0 0}
  .article p{margin:11px 0 0}
  .article p,.article li{font-size:14px;line-height:1.62}
  .article ul{margin:9px 0 0;padding-left:26px}
  .article li{margin:3px 0}
  .article b,.article strong{font-weight:700}

  sup.ref{font-size:10.5px;line-height:1;vertical-align:super}
  sup.ref a{color:var(--link)}

  /* ---------- INFOBOX ---------- */
  .infobox{float:right;width:302px;margin:12px 0 16px 22px;border:1px solid var(--border);background:var(--box);font-size:12.4px;line-height:1.5}
  @media (max-width:720px){.infobox{float:none;width:100%;margin:16px 0}}
  .infobox .ib-title{font-family:var(--serif);font-size:18px;text-align:center;padding:8px 8px 7px;border-bottom:1px solid var(--border-soft)}
  .ib-img{padding:10px 10px 6px;text-align:center}
  .ib-img img{max-width:100%;height:auto;border:1px solid var(--border-soft);display:block;margin:0 auto}
  .ib-placeholder{border:1px dashed var(--border);background:var(--chrome);color:var(--ink-2);padding:34px 10px;font-size:11.5px;line-height:1.5}
  .ib-cap{font-size:11.5px;color:var(--ink-2);padding:5px 10px 9px;text-align:center}
  .infobox table{border-collapse:collapse;width:100%}
  .infobox th,.infobox td{text-align:left;vertical-align:top;padding:5px 9px;border-top:1px solid var(--border-soft)}
  .infobox th{width:37%;font-weight:700;color:var(--ink)}
  .infobox .ib-section{background:var(--chrome);text-align:center;font-weight:700;padding:5px 9px;border-top:1px solid var(--border-soft)}

  /* ---------- TOC ---------- */
  .toc{display:inline-block;min-width:min(330px,100%);border:1px solid var(--border-soft);background:var(--box);padding:9px 20px 11px 12px;margin:18px 0 4px;font-size:13px}
  .toc .toctitle{font-weight:700;text-align:center;margin-bottom:5px}
  .toc ol{list-style:none;counter-reset:t;margin:0;padding-left:4px}
  .toc ol ol{counter-reset:s;padding-left:18px}
  .toc li{counter-increment:t;margin:2px 0}
  .toc ol ol li{counter-increment:s}
  .toc li::before{content:counter(t) " ";color:var(--ink-2)}
  .toc ol ol li::before{content:counter(t) "." counter(s) " "}

  /* ---------- LOGO ROW ---------- */
  .logorow{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0 0}
  .logocell{border:1px solid var(--border-soft);background:var(--box);padding:14px 10px;text-align:center}
  .logocell{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0}
  .logocell img{max-width:100%;max-height:54px;width:auto;height:auto;object-fit:contain;background:#fff;padding:6px;border-radius:2px}
  .logocell .ph{border:1px dashed var(--border);color:var(--ink-2);font-size:11px;padding:18px 6px;line-height:1.45}
  .logocell .nm{font-size:11.5px;color:var(--ink-2);margin-top:7px}

  /* ---------- REFERENCES ---------- */
  ol.reflist{font-size:12.6px;line-height:1.55;padding-left:30px;margin:11px 0 0}
  ol.reflist li{margin:5px 0;padding-left:2px}
  ol.reflist .backlink{font-weight:700;color:var(--link)}
  .cite-note{font-style:italic;color:var(--ink-2)}

  .hatnote{font-style:italic;color:var(--ink-2);font-size:13px;margin:9px 0 0;padding-left:26px}

  .catbar{margin:34px 0 0;border:1px solid var(--border-soft);background:var(--box);padding:8px 11px;font-size:12.4px}
  .catbar b{font-weight:700;margin-right:5px}
  .catbar ul{display:inline;list-style:none;margin:0;padding:0}
  .catbar li{display:inline;border-left:1px solid var(--border-soft);margin-left:7px;padding-left:7px}
  .catbar li:first-child{border-left:none;margin-left:0;padding-left:0}

  footer.wf{border-top:1px solid var(--border-soft);margin-top:26px;padding:14px 0 0;font-size:11.8px;color:var(--ink-2);line-height:1.6}
  .clearfix::after{content:"";display:block;clear:both}

  /* ---------- VIDEO GRID ---------- */
  .vidgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:13px;margin:14px 0 0}
  .vidcard{border:1px solid var(--border-soft);background:var(--box);display:flex;flex-direction:column}
  .vidcard a.thumb{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:#000}
  .vidcard a.thumb img{width:100%;height:100%;object-fit:cover;display:block}
  .vidcard .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
  .vidcard .play i{width:42px;height:30px;background:rgba(0,0,0,.7);border-radius:7px;display:flex;align-items:center;justify-content:center}
  .vidcard .play i::after{content:"";border-style:solid;border-width:6.5px 0 6.5px 11px;border-color:transparent transparent transparent #fff;margin-left:2px}
  .vidcard a.thumb:hover .play i{background:#c00}
  .vidcard .vmeta{padding:8px 10px}
  .vidcard .vt{font-size:12.4px;line-height:1.4;color:var(--ink)}
  .vidcard .vd{font-size:11px;color:var(--ink-3);margin-top:3px;font-variant-numeric:tabular-nums}

  /* ---------- WIKITABLE ---------- */
  table.wikitable{border-collapse:collapse;margin:14px 0 0;font-size:13px;width:100%}
  table.wikitable th,table.wikitable td{border:1px solid var(--border-soft);padding:6px 9px;text-align:left;vertical-align:top}
  table.wikitable thead th{background:var(--box);font-weight:700}
  table.wikitable tbody th{background:var(--box);font-weight:700;width:46px;text-align:center}
  table.wikitable td.num{font-variant-numeric:tabular-nums;white-space:nowrap}

  /* ---------- PHOTO GALLERY ---------- */
  .gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:14px 0 0}
  .gallery figure{margin:0;border:1px solid var(--border-soft);background:var(--box)}
  .gallery img{width:100%;height:auto;display:block}
  .gallery figcaption{font-size:11.5px;color:var(--ink-2);padding:6px 9px;line-height:1.45}