/* AI Interior Design - MonoBook-era reference shell */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:#f2f6f9;color:#202122;
  font:15.5px/1.65 Arial,Helvetica,"Liberation Sans",sans-serif}
a{color:#0645ad;text-decoration:none}
a:visited{color:#0b0080}
a:hover,a:focus{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:2px solid #0645ad;outline-offset:2px}
img{max-width:100%;height:auto}

.skip{position:absolute;left:-9999px;top:0;background:#fff;border:1px solid #a2a9b1;padding:8px 12px;z-index:20}
.skip:focus{left:8px;top:8px}

.page{max-width:1240px;margin:0 auto;padding:12px 12px 40px;
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:12px;align-items:start}

/* ---- rail ---- */
.rail{font-size:12px}
.rail .brandline{display:flex;gap:8px;align-items:flex-start;padding:0 4px 10px}
.rail .brandline img{width:32px;height:32px;flex:0 0 32px}
.rail .wordmark{font:21px/1.15 Georgia,"Times New Roman",serif;color:#101418;display:block}
.rail .strap{display:block;color:#54595d;font-size:11px;line-height:1.35;margin-top:3px}
.rail-group{margin:0 0 14px}
.rail-group h2{font:12px/1.3 Arial,Helvetica,sans-serif;color:#54595d;font-weight:normal;
  margin:0 0 4px;padding:0 0 2px 4px;border-bottom:1px solid #c8ccd1;text-transform:none}
.rail-group ul{list-style:none;margin:0;padding:0 0 0 4px}
.rail-group li{margin:0 0 3px;line-height:1.4}
.rail-group a[aria-current="page"]{color:#202122;font-weight:bold}

/* ---- article surface ---- */
.surface{background:#fff;border-top:1px solid #a7d7f9;border-left:1px solid #a7d7f9;
  border-right:1px solid #e4e7ea;border-bottom:1px solid #e4e7ea;padding:0 22px 20px;min-width:0}
.ns-tabs{list-style:none;display:flex;gap:2px;margin:0 -22px 14px;padding:0 22px;
  border-bottom:1px solid #a7d7f9;background:#f2f6f9}
.ns-tabs li{margin:0}
.ns-tabs a{display:block;padding:5px 12px;font-size:12px;border:1px solid #a7d7f9;
  border-bottom:0;background:#eaf3fb;color:#0645ad}
.ns-tabs a[aria-current="page"]{background:#fff;color:#202122;font-weight:bold;
  position:relative;top:1px}
.ns-tabs a:hover{text-decoration:none;background:#fff}

.crumb{font-size:12px;color:#54595d;margin:14px 0 2px}
.crumb a{color:#0645ad}

h1{font:30px/1.25 Georgia,"Times New Roman",serif;color:#101418;font-weight:normal;
  margin:6px 0 10px;padding-bottom:6px;border-bottom:1px solid #a2a9b1}
h2{font:23px/1.3 Georgia,"Times New Roman",serif;color:#101418;font-weight:normal;
  margin:26px 0 8px;padding-bottom:4px;border-bottom:1px solid #a2a9b1;clear:none}
h3{font:19px/1.35 Georgia,"Times New Roman",serif;color:#101418;font-weight:normal;margin:20px 0 6px}
p,ul,ol,dl{max-width:72ch}
.surface p{margin:0 0 12px}
.lead{font-size:16px}

/* ---- contents box ---- */
.contents-box{display:table;background:#f8f9fa;border:1px solid #c8ccd1;padding:10px 16px 12px;
  margin:16px 0 18px;font-size:14px}
.contents-box h2{font:14px/1.3 Arial,Helvetica,sans-serif;font-weight:bold;border:0;
  margin:0 0 6px;padding:0;text-align:center}
.contents-box ol{margin:0;padding-left:22px}
.contents-box li{margin:2px 0}

/* ---- infobox (distinctive motif) ---- */
.infobox{float:right;width:290px;margin:4px 0 14px 20px;border:1px solid #c8ccd1;
  background:#f8f9fa;font-size:12px}
.infobox .ib-title{background:#eaf3fb;border-bottom:1px solid #c8ccd1;padding:6px 10px;
  font:14px/1.3 Georgia,serif;color:#101418}
.infobox table{width:100%;border-collapse:collapse}
.infobox th{text-align:left;font-weight:normal;color:#54595d;padding:5px 10px;
  vertical-align:top;width:52%;border-bottom:1px solid #e4e7ea}
.infobox td{padding:5px 10px;vertical-align:top;border-bottom:1px solid #e4e7ea;
  font:13px/1.5 Consolas,"DejaVu Sans Mono",monospace;color:#202122}
.infobox tr:last-child th,.infobox tr:last-child td{border-bottom:0}

/* ---- figures ---- */
.figure-thumb{border:1px solid #c8ccd1;background:#f8f9fa;padding:5px;margin:14px 0;
  max-width:100%;display:table}
.figure-thumb img{display:block;border:1px solid #e4e7ea;background:#fff}
.figure-thumb figcaption{font-size:12px;color:#54595d;padding:6px 2px 2px;line-height:1.45}
.figure-right{float:right;margin:4px 0 14px 20px;max-width:330px}
.figure-right img{width:100%;height:auto}

/* ---- portals ---- */
.portals{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:14px 0 4px}
.portal{border:1px solid #c8ccd1;background:#f6f9fc;padding:10px 12px 12px}
.portal h3{font:16px/1.3 Georgia,serif;color:#3366cc;margin:0 0 4px;
  display:flex;align-items:center;gap:7px}
.portal h3 svg{flex:0 0 18px}
.portal p{font-size:13px;color:#54595d;margin:0 0 7px}
.portal ul{list-style:none;margin:0;padding:0;font-size:13px}
.portal li{margin:0 0 3px}

/* ---- tables ---- */
.tablewrap{overflow-x:auto;margin:12px 0 4px}
.index-table{border-collapse:collapse;width:100%;min-width:520px;font-size:14px;background:#fff}
.index-table caption{caption-side:top;text-align:left;font-size:12px;color:#54595d;padding:0 0 6px}
.index-table th,.index-table td{border:1px solid #c8ccd1;padding:7px 9px;text-align:left;
  vertical-align:top}
.index-table thead th{background:#eaf3fb;font-size:12px;font-weight:bold}
.index-table tbody th{font-weight:normal}
.index-table .abstract{display:block;color:#54595d;font-size:12.5px;margin-top:3px;font-weight:normal}
.index-table td.meta{font:13px/1.5 Consolas,"DejaVu Sans Mono",monospace;color:#54595d;white-space:nowrap}

/* ---- category index / columns ---- */
.catcols{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:12px 0 0}
.catcols h3{margin:0 0 5px;font-size:17px}
.catcols ul{list-style:none;margin:0;padding:0;font-size:14px}
.catcols li{margin:0 0 3px}
.catcols .count{display:block;font-size:12px;color:#54595d;margin-top:6px}

/* ---- toolbox ---- */
.toolbox{border:1px solid #c8ccd1;background:#f8f9fa;padding:10px 14px 12px;margin:20px 0 0;
  font-size:13px}
.toolbox h2{font:14px/1.3 Arial,Helvetica,sans-serif;font-weight:bold;border:0;margin:0 0 6px;padding:0}
.toolbox ul{list-style:none;margin:0;padding:0;columns:2;column-gap:24px}
.toolbox li{margin:0 0 3px;break-inside:avoid}

/* ---- category footer + prev/next ---- */
.catfoot{border-top:1px solid #a2a9b1;margin:22px 0 0;padding:8px 0 0;font-size:13px;clear:both}
.catfoot .label{color:#54595d}
.catfoot ul{list-style:none;display:inline;margin:0;padding:0}
.catfoot li{display:inline;margin:0}
.catfoot li+li::before{content:" | ";color:#a2a9b1}
.prevnext{display:flex;justify-content:space-between;gap:16px;font-size:13px;
  border-top:1px solid #e4e7ea;margin-top:18px;padding-top:10px;clear:both}
.prevnext span{color:#54595d;display:block;font-size:12px}

/* ---- definition lists ---- */
.defs dt{font-weight:bold;margin:14px 0 2px}
.defs dd{margin:0 0 6px;color:#202122}
.jump{font:13px/1.6 Consolas,"DejaVu Sans Mono",monospace;background:#f8f9fa;
  border:1px solid #c8ccd1;padding:7px 10px;margin:12px 0}

/* ---- footer ---- */
.sitefoot{grid-column:1/-1;border-top:1px solid #a2a9b1;margin-top:16px;padding:8px 4px 0;
  font-size:12px;color:#54595d;display:flex;flex-wrap:wrap;gap:6px 16px;justify-content:space-between}
.sitefoot ul{list-style:none;display:flex;gap:14px;margin:0;padding:0}

@media (max-width:1024px){.page{max-width:none}}
@media (max-width:768px){
  .page{grid-template-columns:minmax(0,1fr)}
  .rail{border:1px solid #c8ccd1;background:#f8f9fa;padding:10px 12px}
  .rail-nav-groups{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .surface{padding:0 14px 18px;border-left:1px solid #a7d7f9}
  .ns-tabs{margin:0 -14px 12px;padding:0 14px}
  .infobox{float:none;width:auto;margin:14px 0}
  .figure-right{float:none;margin:14px 0}
  .portals{grid-template-columns:1fr 1fr}
  .catcols{grid-template-columns:1fr 1fr}
  h1{font-size:26px}
}
@media (max-width:640px){
  .portals{grid-template-columns:1fr}
  .portal h3 svg{display:none}
  .catcols{grid-template-columns:1fr}
  .toolbox ul{columns:1}
  .tablewrap{box-shadow:inset -10px 0 8px -10px rgba(0,0,0,.25)}
  .figure-thumb{display:block;overflow-x:auto;box-shadow:inset -10px 0 8px -10px rgba(0,0,0,.25)}
  .figure-thumb img{max-width:none;width:auto}
  .figure-thumb figcaption{max-width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}