/* posl docs. Layout after docs.proxima.tools (GitBook, measured 19/09/2026):
   300 px sidebar, banner strip, breadcrumbs, big title, lede, right-hand
   "On this page". Tokens and fonts are the house ones (front/base.css). */
@font-face{font-family:Supreme;src:url(/fonts/Supreme-Regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Supreme;src:url(/fonts/Supreme-Medium.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:Supreme;src:url(/fonts/Supreme-Bold.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Instrument Serif";src:url(/fonts/InstrumentSerif-400i.woff2) format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url(/fonts/IBMPlexMono-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url(/fonts/IBMPlexMono-500.woff2) format("woff2");font-weight:500;font-display:swap}

:root{
  color-scheme:dark;
  --bg:#050609; --side:#020304; --panel:#08090d; --card:#0a0b0f; --card2:#0e0f14; --code:#07080c;
  --ink:#f2f2ed; --ink2:rgba(242,242,237,.68); --ink3:rgba(242,242,237,.56); --line:rgba(242,242,237,.10); --line2:rgba(242,242,237,.06);
  --blue:#4557f0; --blue-text:#9aa6ff; --blue-soft:rgba(96,112,255,.14); --warn:#e2a04d; --warn-soft:rgba(226,160,77,.10); --bad:#e2604d;
  --hover:rgba(242,242,237,.05); --active:rgba(96,112,255,.14); --shadow:rgba(0,0,0,.55);
  --sans:Supreme,system-ui,sans-serif; --serif:"Instrument Serif",Georgia,serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
  --ease:cubic-bezier(.23,1,.32,1);
}
:root[data-theme=light]{
  color-scheme:light;
  --bg:#f5f5f0; --side:#ecebe4; --panel:#f1f0ea; --card:#fff; --card2:#fafaf7; --code:#f0efe8;
  --ink:#0b0c10; --ink2:rgba(11,12,16,.7); --ink3:rgba(11,12,16,.6); --line:rgba(11,12,16,.11); --line2:rgba(11,12,16,.06);
  --blue:#3346e0; --blue-text:#3346e0; --blue-soft:rgba(51,70,224,.09); --warn:#9a5a0a; --warn-soft:rgba(200,120,20,.09);
  --hover:rgba(11,12,16,.04); --active:rgba(51,70,224,.09); --shadow:rgba(11,12,16,.2);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
::selection{background:var(--blue);color:#fff}
.mono{font-family:var(--mono)}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--card);padding:8px 12px;border-radius:8px}
.skip:focus{left:8px}

/* ---------- sidebar ---------- */
.side{position:fixed;inset:0 auto 0 0;width:300px;background:var(--side);display:flex;flex-direction:column;padding:20px 12px 12px;z-index:40;border-right:1px solid var(--line2)}
.sidetop{display:flex;align-items:center;justify-content:space-between;padding:0 10px 18px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:500;font-size:19px;letter-spacing:-.03em}
.brand .mark{width:28px;height:28px;border-radius:8px;background:var(--ink);color:var(--bg);display:grid;place-items:center}
.brand .docs{font-family:var(--serif);font-style:italic;font-weight:400;font-size:20px;color:var(--ink2);letter-spacing:0}
.search{display:flex;align-items:center;gap:10px;height:42px;margin:0 8px 14px;padding:0 10px 0 12px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--ink3);font-size:15px;text-align:left;transition:border-color .15s,color .15s}
.search span{flex:1}
.search:hover{border-color:var(--ink3);color:var(--ink2)}
kbd{font:500 11px/1 var(--mono);color:var(--ink3);border:1px solid var(--line);border-radius:6px;padding:4px 6px;background:var(--card)}
.nav{flex:1;overflow-y:auto;padding:0 8px 16px;scrollbar-width:thin;scrollbar-color:var(--line) transparent;border-radius:14px;border:1px solid var(--line2);background:var(--panel);padding-top:6px}
.ngroup{padding:12px 0 4px}
.nlabel{display:flex;align-items:center;gap:8px;font:500 11px/1 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:var(--ink3);padding:8px 10px 8px}
.nno{color:var(--blue-text)}
.nav a{display:block;padding:7px 10px;margin:1px 0;border-radius:9px;text-decoration:none;font-size:15px;color:var(--ink2);line-height:1.35;transition:background-color .15s,color .15s}
.nav a:hover{background:var(--hover);color:var(--ink)}
.nav a.on{background:var(--active);color:var(--blue-text);font-weight:500}
.sidefoot{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 8px 2px}
.sidefoot a{font-size:14px;text-decoration:none;color:var(--ink2);padding:8px 10px;border-radius:9px}
.sidefoot a:hover{background:var(--hover);color:var(--ink)}
.iconbtn{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:var(--ink2);transition:background-color .15s,color .15s}
.iconbtn:hover{background:var(--hover);color:var(--ink)}
.iconbtn .sun{display:none}:root[data-theme=light] .iconbtn .sun{display:block}:root[data-theme=light] .iconbtn .moon{display:none}
.only-m{display:none}

/* ---------- content shell ---------- */
.shell{margin-left:300px;min-width:0}
.banner{position:relative;height:190px;overflow:hidden;border-bottom:1px solid var(--line2);background:radial-gradient(120% 140% at 50% 120%,rgba(69,87,240,.22),transparent 60%),var(--side)}
.bdots{position:absolute;inset:0;background-image:radial-gradient(var(--line) 1px,transparent 1.3px);background-size:16px 16px;-webkit-mask:linear-gradient(to bottom,transparent,#000 40%,#000 70%,transparent);mask:linear-gradient(to bottom,transparent,#000 40%,#000 70%,transparent)}
.barc{position:absolute;left:50%;top:118px;width:max(1400px,140%);aspect-ratio:1;transform:translateX(-50%);border-radius:50%;background:var(--side);box-shadow:0 -1px 0 rgba(124,140,255,.85),0 -16px 50px -12px rgba(96,112,255,.5);
  background-image:radial-gradient(rgba(242,242,237,.22) 1px,transparent 1.4px);background-size:13px 13px}
:root[data-theme=light] .barc{background-color:var(--side);background-image:radial-gradient(rgba(11,12,16,.18) 1px,transparent 1.4px)}
.bword{position:absolute;left:48px;top:34px;font:500 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink3)}
.cols{display:grid;grid-template-columns:minmax(0,780px) 240px;gap:56px;justify-content:center;padding:0 40px}
.doc{min-width:0;padding:34px 0 64px}
.crumbs{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--blue-text);margin-bottom:14px}
.crumbs a{text-decoration:none}.crumbs span[aria-hidden]{color:var(--ink3)}
.titlerow{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
h1{font-weight:500;font-size:clamp(32px,4vw,44px);line-height:1.08;letter-spacing:-.035em;margin:0 0 14px}
.copyp{flex:none;display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 12px;border-radius:9px;border:1px solid var(--line);font-size:13px;color:var(--ink2);margin-top:6px;transition:border-color .15s,color .15s}
.copyp:hover{border-color:var(--ink3);color:var(--ink)}
.lede{font-size:19px;line-height:1.55;color:var(--ink2);margin:0 0 30px;max-width:68ch}

/* ---------- prose ---------- */
.prose{font-size:16.5px;line-height:1.72;color:var(--ink2)}
.prose>*:first-child{margin-top:0}
.prose h2{font-weight:500;font-size:26px;line-height:1.2;letter-spacing:-.025em;color:var(--ink);margin:52px 0 14px;padding-top:4px}
.prose h3{font-weight:500;font-size:19px;letter-spacing:-.015em;color:var(--ink);margin:34px 0 10px}
.prose h2 .anchor,.prose h3 .anchor{margin-left:10px;text-decoration:none;color:var(--ink3);opacity:0;font-weight:400;transition:opacity .15s}
.prose h2:hover .anchor,.prose h3:hover .anchor,.anchor:focus{opacity:1}
.prose p{margin:0 0 16px}
.prose dl.gloss{margin:8px 0 24px;border-top:1px solid var(--line2)}
.prose dl.gloss dt{font-weight:500;color:var(--ink);padding:18px 0 4px}
.prose dl.gloss dd{margin:0;padding:0 0 18px;color:var(--ink2);border-bottom:1px solid var(--line2)}
.prose strong{color:var(--ink);font-weight:500}
.prose a{color:var(--blue-text);text-decoration:underline;text-decoration-color:rgba(154,166,255,.35);text-underline-offset:3px}
.prose a:hover{text-decoration-color:currentColor}
.prose ul,.prose ol{padding-left:22px;margin:0 0 18px}
.prose li{margin:5px 0}
.prose li::marker{color:var(--ink3)}
.prose code{font:400 .86em/1.4 var(--mono);background:var(--code);border:1px solid var(--line2);border-radius:6px;padding:1px 5px;color:var(--ink);word-break:break-word}
.prose em.s{font-family:var(--serif);font-style:italic;font-size:1.1em;color:var(--ink)}
.small{font-size:14px;color:var(--ink3)}
ol.pub{columns:2;column-gap:24px}
ol.pub li{break-inside:avoid}
.codebox{position:relative;margin:0 0 20px}
.codebox pre{margin:0;overflow-x:auto;background:var(--code);border:1px solid var(--line);border-radius:12px;padding:16px 18px;font:400 13.5px/1.6 var(--mono);color:var(--ink)}
.codebox pre code{background:none;border:0;padding:0;font-size:inherit;word-break:normal}
.cbtn{position:absolute;right:8px;top:8px;height:26px;padding:0 9px;border-radius:7px;font:500 11px/1 var(--mono);color:var(--ink3);background:var(--card);border:1px solid var(--line);opacity:0;transition:opacity .15s,color .15s}
.codebox:hover .cbtn,.cbtn:focus-visible,.cbtn.done{opacity:1}
.cbtn.done{color:var(--blue-text)}
@media (hover:none){.cbtn{opacity:1}}
.tbl{overflow-x:auto;margin:0 0 22px;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:14.5px;line-height:1.5}
th{text-align:left;font:500 11.5px/1.3 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ink3);background:var(--card);padding:11px 14px;border-bottom:1px solid var(--line)}
td{padding:10px 14px;border-top:1px solid var(--line2);vertical-align:top;color:var(--ink2)}
tr:first-child td{border-top:0}
td code{white-space:nowrap}
.callout{display:flex;gap:12px;margin:0 0 20px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:var(--card);font-size:15.5px;line-height:1.6}
.callout::before{content:"";flex:none;width:3px;border-radius:3px;background:var(--blue)}
.callout.warn::before{background:var(--warn)}
.callout.warn{background:var(--warn-soft);border-color:rgba(226,160,77,.25)}
.callout .ct{display:block;font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue-text);margin-bottom:6px}
.callout.warn .ct{color:var(--warn)}
.callout p{margin:0 0 6px}.callout p:last-child{margin:0}
.fig{margin:6px 0 24px;border:1px solid var(--line);border-radius:14px;background:var(--side);padding:18px;overflow-x:auto}
.fig svg{display:block;width:100%;height:auto;min-width:560px;color:var(--ink)}
.fig figcaption{font-size:13px;color:var(--ink3);margin-top:10px}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0 0 24px}
.cards a{display:block;padding:16px 18px;border:1px solid var(--line);border-radius:12px;text-decoration:none;background:var(--card);transition:border-color .15s,transform .2s var(--ease)}
.cards a:hover{border-color:var(--ink3);transform:translateY(-2px)}
.cards b{display:block;color:var(--ink);font-weight:500;margin-bottom:3px}
.cards span{font-size:14px;color:var(--ink3);line-height:1.5}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps>li{counter-increment:s;position:relative;padding-left:40px;margin:0 0 14px}
.steps>li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:1px;font:500 12px/24px var(--mono);color:var(--blue-text);width:30px;height:24px;border-radius:7px;background:var(--blue-soft);text-align:center}
ul.log{list-style:none;padding:0!important}
ul.log li{padding:10px 0;border-top:1px solid var(--line2);margin:0}
ul.log .mono{color:var(--ink3);font-size:13px;margin-right:6px}
.pill{display:inline-block;font:500 11px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;padding:4px 7px;border-radius:6px;background:var(--blue-soft);color:var(--blue-text);vertical-align:2px}
.pill.tbd{background:var(--warn-soft);color:var(--warn)}

/* prev / next and footer */
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:56px}
.pn a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;text-decoration:none;transition:border-color .15s}
.pn a:hover{border-color:var(--blue-text)}
.pn .next{text-align:right}
.pl{font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink3)}
.pt{font-size:17px;color:var(--ink);font-weight:500}
.dfoot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:20px;border-top:1px solid var(--line2);font-size:13px;color:var(--ink3)}
.dlegal{display:flex;gap:14px}
.dlegal a{color:var(--ink3);text-decoration:none}
.dlegal a:hover{color:var(--ink);text-decoration:underline}

/* table of contents */
.toc{position:sticky;top:0;align-self:start;max-height:100vh;overflow-y:auto;padding:36px 0 40px;font-size:14px}
.toclabel{font:500 11px/1 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:var(--ink3);padding:0 12px 12px}
.toc a{display:block;padding:6px 12px;border-radius:8px;text-decoration:none;color:var(--ink3);line-height:1.4;border-left:1px solid transparent;transition:color .15s,background-color .15s}
.toc a.l3{padding-left:24px;font-size:13.5px}
.toc a:hover{color:var(--ink)}
.toc a.on{color:var(--blue-text);background:var(--active)}

/* search */
.sk{position:fixed;inset:0;z-index:90;background:rgba(4,5,8,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;justify-content:center;align-items:flex-start;padding:12vh 16px 16px}
.skbox{width:min(640px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:0 30px 80px -20px var(--shadow);overflow:hidden;animation:skin .18s var(--ease)}
@keyframes skin{from{opacity:0;transform:translateY(8px) scale(.98)}}
.skin{display:flex;align-items:center;gap:10px;padding:0 14px;border-bottom:1px solid var(--line);color:var(--ink3)}
.skin input{flex:1;height:54px;border:0;outline:0;background:transparent;color:var(--ink);font:400 17px var(--sans)}
.skin input::-webkit-search-cancel-button{display:none}
.skres{max-height:56vh;overflow-y:auto;padding:6px}
.skres a{display:block;padding:10px 12px;border-radius:10px;text-decoration:none}
.skres a:hover,.skres a.sel{background:var(--active)}
.skres b{display:block;color:var(--ink);font-weight:500;font-size:15px}
.skres span{display:block;font-size:13.5px;color:var(--ink3);line-height:1.5;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.skres mark{background:var(--blue-soft);color:var(--blue-text);border-radius:3px;padding:0 1px}
.skres .g{font:500 10.5px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:4px}
.skempty{padding:22px;text-align:center;color:var(--ink3);font-size:14px}
.scrim{position:fixed;inset:0;background:rgba(4,5,8,.55);z-index:35}

/* ---------- responsive ---------- */
@media (max-width:1180px){.cols{grid-template-columns:minmax(0,780px)}.toc{display:none}}
@media (max-width:900px){
  .only-m{display:grid}
  .mtop{display:flex;align-items:center;justify-content:space-between;gap:8px;position:sticky;top:0;z-index:30;height:58px;padding:0 10px;background:var(--side);border-bottom:1px solid var(--line2)}
  .mtop .brand{font-size:17px}
  .side{transform:translateX(-102%);transition:transform .28s var(--ease);width:min(320px,88vw);box-shadow:20px 0 60px var(--shadow)}
  body.navopen .side{transform:none}
  .shell{margin-left:0}
  .cols{padding:0 16px}
  .banner{height:120px}.barc{top:74px}.bword{left:16px;top:22px}
  .doc{padding-top:24px}
  .copyp span{display:none}.copyp{width:34px;padding:0;justify-content:center}
  .lede{font-size:17px}
  .prose{font-size:16px}
  .cards,.pn{grid-template-columns:minmax(0,1fr)}
  ol.pub{columns:1}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}