/* MARWAN docs: Teal theme
   Layout: three-column docs shell (sidebar nav / 72ch reading column / on-this-page),
   collapsing to one column with a slide-out drawer below 860px.
   Colours are tokens on :root. Dark mode follows the OS unless the reader picks a
   theme, which sets data-theme="light|dark" on <html>. */

/* ---------- fonts (self-hosted, variable) ---------- */
@font-face{font-family:"Inter Variable";font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/inter-latin-wght-normal.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter Variable";font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/inter-latin-ext-wght-normal.woff2) format("woff2-variations");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Inter Variable";font-style:italic;font-display:swap;font-weight:100 900;src:url(/assets/fonts/inter-latin-wght-italic.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter Variable";font-style:italic;font-display:swap;font-weight:100 900;src:url(/assets/fonts/inter-latin-ext-wght-italic.woff2) format("woff2-variations");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Bricolage Grotesque Variable";font-style:normal;font-display:swap;font-weight:200 800;font-stretch:75% 100%;src:url(/assets/fonts/bricolage-grotesque-latin-standard-normal.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Bricolage Grotesque Variable";font-style:normal;font-display:swap;font-weight:200 800;font-stretch:75% 100%;src:url(/assets/fonts/bricolage-grotesque-latin-ext-standard-normal.woff2) format("woff2-variations");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"JetBrains Mono Variable";font-style:normal;font-display:swap;font-weight:100 800;src:url(/assets/fonts/jetbrains-mono-latin-wght-normal.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono Variable";font-style:normal;font-display:swap;font-weight:100 800;src:url(/assets/fonts/jetbrains-mono-latin-ext-wght-normal.woff2) format("woff2-variations");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* ---------- tokens ---------- */
:root{
  --bg:#fbfcfc; --surface:#f2f5f5; --line:#dfe5e6; --fg:#16201f; --muted:#5b6968;
  --accent:#0d6b6e; --accent-soft:#e1efef; --code-bg:#f3f6f6;
  --note:#2f5f9e; --note-bg:#eaf1fa; --tip:#2e7d4f; --tip-bg:#e7f4ec;
  --warn:#8a5a00; --warn-bg:#fbf2df; --danger:#a8322d; --danger-bg:#fbeceb;
  --important:#6b48b3; --important-bg:#f1ecfa;
  --hl-kw:#0d6b6e; --hl-str:#2f5f9e; --hl-num:#8a5a00; --hl-com:#6f7d7c; --hl-fn:#6b48b3; --hl-attr:#a8322d;
  --scrim:rgba(10,20,20,.35);
  --f-display:"Bricolage Grotesque Variable","Segoe UI",system-ui,sans-serif;
  --f-body:"Inter Variable",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"JetBrains Mono Variable",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --header-h:56px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0f1515; --surface:#151d1d; --line:#25302f; --fg:#e3ebea; --muted:#93a3a1;
  --accent:#5cc3c0; --accent-soft:#16302f; --code-bg:#131b1b;
  --note:#8fb6ec; --note-bg:#172332; --tip:#79c99a; --tip-bg:#15281e;
  --warn:#e5b65c; --warn-bg:#2a2214; --danger:#f08a84; --danger-bg:#2e1818;
  --important:#b9a2f0; --important-bg:#221b33;
  --hl-kw:#5cc3c0; --hl-str:#8fb6ec; --hl-num:#e5b65c; --hl-com:#7f8f8d; --hl-fn:#b9a2f0; --hl-attr:#f08a84;
  --scrim:rgba(0,0,0,.55); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f1515; --surface:#151d1d; --line:#25302f; --fg:#e3ebea; --muted:#93a3a1;
  --accent:#5cc3c0; --accent-soft:#16302f; --code-bg:#131b1b;
  --note:#8fb6ec; --note-bg:#172332; --tip:#79c99a; --tip-bg:#15281e;
  --warn:#e5b65c; --warn-bg:#2a2214; --danger:#f08a84; --danger-bg:#2e1818;
  --important:#b9a2f0; --important-bg:#221b33;
  --hl-kw:#5cc3c0; --hl-str:#8fb6ec; --hl-num:#e5b65c; --hl-com:#7f8f8d; --hl-fn:#b9a2f0; --hl-attr:#f08a84;
  --scrim:rgba(0,0,0,.55); color-scheme:dark}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 24px)}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--bg);color:var(--fg);font:400 16px/1.65 var(--f-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg,video{max-width:100%;height:auto}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.gutter{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--fg);color:var(--bg);padding:8px 12px;border-radius:6px}
.skip:focus{left:12px}
kbd{font:500 11.5px var(--f-mono);border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:1px 5px;color:var(--muted);background:var(--bg)}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0px)}
.top .in{max-width:1320px;margin:0 auto;height:var(--header-h);display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg);font:650 18px/1 var(--f-display);letter-spacing:-.01em;white-space:nowrap}
.brand img{width:28px;height:28px;flex:none}
.brand small{font:500 13px var(--f-body);color:var(--muted);letter-spacing:0}
.search-btn{margin-left:auto;display:flex;align-items:center;gap:10px;min-width:0;width:min(340px,40vw);height:36px;padding:0 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--muted);font:inherit;font-size:14px;cursor:pointer;text-align:left}
.search-btn span{flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.icon-btn{flex:none;width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--fg);cursor:pointer;padding:0}
.icon-btn svg{width:18px;height:18px}
.menu-btn{display:none}
.top-links{display:flex;gap:2px}
.top-links a{font-size:14px;color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:6px}
.top-links a:hover{color:var(--fg);background:var(--surface)}

/* ---------- home ---------- */
.home{max-width:1080px;margin:0 auto;padding-block:56px 72px}
.hero{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;max-width:720px}
.eyebrow{font:500 12px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.hero h1{font:650 clamp(34px,5.4vw,54px)/1.05 var(--f-display);letter-spacing:-.025em;margin:0;text-wrap:balance}
.hero p{margin:0;font-size:18px;color:var(--muted);max-width:60ch}
.hero-search{display:flex;align-items:center;gap:12px;height:52px;padding:0 16px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--muted);font:inherit;font-size:16px;cursor:pointer;text-align:left;width:100%;max-width:560px;margin-top:6px}
.hero-search span{flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.stats{display:flex;flex-wrap:wrap;gap:8px 22px;font:400 13px var(--f-mono);color:var(--muted);font-variant-numeric:tabular-nums}
.stats b{color:var(--fg);font-weight:500}
.sections{margin-top:64px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:44px 48px}
.sec h2{font:600 19px/1.25 var(--f-display);margin:0 0 12px;display:flex;align-items:baseline;gap:10px;letter-spacing:-.01em}
.sec h2 .n{font:400 12px var(--f-mono);color:var(--muted)}
.sec ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.sec li a{display:grid;gap:1px;padding:9px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--fg);font-size:15px}
.sec li a:hover .t{color:var(--accent)}
.sec li .d{font-size:13px;color:var(--muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding-block:24px calc(24px + env(safe-area-inset-bottom,0px))}
.site-foot .in{max-width:1320px;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.site-foot a{color:var(--muted)}

/* ---------- doc layout ---------- */
.doc-shell{max-width:1320px;margin:0 auto;display:grid;grid-template-columns:260px minmax(0,1fr) 220px;gap:48px}
.sidenav{position:sticky;top:calc(var(--header-h) + env(safe-area-inset-top,0px));align-self:start;max-height:calc(100vh - var(--header-h) - env(safe-area-inset-top,0px));overflow:auto;overscroll-behavior:contain;padding-block:28px 40px;font-size:14px}
.sidenav h3{font:500 11.5px var(--f-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:22px 0 6px}
.sidenav h3:first-child{margin-top:0}
.sidenav ul{list-style:none;margin:0;padding:0}
.sidenav a{display:block;padding:5px 10px;margin-left:-10px;border-radius:6px;color:var(--fg);text-decoration:none;line-height:1.4}
.sidenav a:hover{background:var(--surface)}
.sidenav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent);font-weight:500}
.drawer-head{display:none}

.doc{padding-block:28px 72px;min-width:0;max-width:72ch}
.crumbs{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.doc h1.title{font:650 clamp(30px,4.2vw,42px)/1.1 var(--f-display);letter-spacing:-.02em;margin:14px 0 12px;text-wrap:balance}
.lede{font-size:18px;color:var(--muted);margin:0 0 18px}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--muted);padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:8px}
.meta span{display:inline-flex;align-items:center;gap:6px}
.meta svg{width:14px;height:14px}


/* ---------- prose ---------- */
.prose{overflow-wrap:break-word}
.prose h2{font:600 24px/1.25 var(--f-display);letter-spacing:-.015em;margin:44px 0 10px;text-wrap:balance}
.prose h3{font:600 17px/1.3 var(--f-body);margin:28px 0 6px}
.prose h4{font:600 15px/1.3 var(--f-body);margin:22px 0 4px}
.prose a.anchor{opacity:0;margin-left:6px;text-decoration:none;color:var(--muted);font-weight:400}
.prose :is(h2,h3,h4):hover a.anchor,.prose a.anchor:focus{opacity:1}
.prose p,.prose li{max-width:68ch}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:4px 0}
.prose li>p{margin:4px 0}
.prose blockquote{margin:18px 0;padding:2px 0 2px 16px;border-left:3px solid var(--line);color:var(--muted)}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.prose img{border-radius:8px;display:block;margin:18px auto}
.prose figure{margin:20px 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:6px}
.prose :not(pre)>code{font:400 .86em var(--f-mono);background:var(--code-bg);border:1px solid var(--line);padding:1px 5px;border-radius:5px;overflow-wrap:anywhere}
.prose table{border-collapse:collapse;width:100%;font-size:14px}
.prose .tablewrap{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:10px}
.prose th,.prose td{text-align:left;padding:9px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font:500 12px var(--f-mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--surface);white-space:nowrap}
.prose tr:last-child td{border-bottom:0}
/* diagrams: ```mermaid fences rendered by docs.js, or inline <svg>/<img> diagrams */
.prose .diagram,.prose pre.mermaid{margin:20px 0;padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--bg);overflow-x:auto;text-align:center;font:400 13px var(--f-mono)}
.prose .diagram svg,.prose pre.mermaid svg{max-width:100%;height:auto}
.prose dl dt{font-weight:600;margin-top:12px}
.prose dl dd{margin:2px 0 0 18px}

/* code blocks: Pygments HtmlFormatter(cssclass="highlight"). docs.js adds the bar + copy button. */
.prose .highlight,.prose pre:not(.highlight pre){margin:16px 0 20px;border:1px solid var(--line);border-radius:10px;background:var(--code-bg);overflow:hidden}
.prose pre{margin:0;padding:14px 16px;overflow-x:auto;font:400 13.5px/1.65 var(--f-mono);tab-size:4;color:var(--fg)}
.prose pre code{font:inherit;background:none;border:0;padding:0}
.codebar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 8px 6px 14px;border-bottom:1px solid var(--line);font:400 12px var(--f-mono);color:var(--muted)}
.codebar .copy{font:500 12px var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--fg);border-radius:6px;padding:3px 9px;cursor:pointer}
/* code with a file name: <figure class="code-file"><figcaption><code>path</code></figcaption><div class="highlight">…</div></figure>
   docs.js moves the name into the code bar; without JS the caption shows as a tab on the box. */
.prose figure.code-file{margin:16px 0 20px}
.prose figure.code-file>figcaption{display:block;width:fit-content;max-width:100%;margin:0;padding:5px 12px;border:1px solid var(--line);border-bottom:0;border-radius:8px 8px 0 0;background:var(--code-bg);text-align:left;font:400 12px var(--f-mono);color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.prose figure.code-file>figcaption code{font:inherit;background:none;border:0;padding:0;color:inherit}
.prose figure.code-file>.highlight{margin:0;border-top-left-radius:0}
.prose figure.code-file.in-bar>figcaption{display:none}
.prose figure.code-file.in-bar>.highlight{border-top-left-radius:10px}
.codebar span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.highlight .c,.highlight .c1,.highlight .cm,.highlight .ch,.highlight .cs,.highlight .cp,.highlight .cpf{color:var(--hl-com);font-style:italic}
.highlight .k,.highlight .kc,.highlight .kd,.highlight .kn,.highlight .kp,.highlight .kr,.highlight .kt,.highlight .ow,.highlight .nt{color:var(--hl-kw)}
.highlight .s,.highlight .s1,.highlight .s2,.highlight .sa,.highlight .sb,.highlight .sc,.highlight .sd,.highlight .se,.highlight .sh,.highlight .si,.highlight .sx,.highlight .sr,.highlight .ss,.highlight .dl{color:var(--hl-str)}
.highlight .m,.highlight .mi,.highlight .mf,.highlight .mh,.highlight .mo,.highlight .il,.highlight .mb{color:var(--hl-num)}
.highlight .nf,.highlight .fm,.highlight .nc,.highlight .nb,.highlight .bp,.highlight .nd{color:var(--hl-fn)}
.highlight .na,.highlight .nv,.highlight .vi,.highlight .vg,.highlight .vc,.highlight .no{color:var(--hl-attr)}
.highlight .gp{color:var(--muted);user-select:none}
.highlight .gd{color:var(--danger)} .highlight .gi{color:var(--tip)} .highlight .gh,.highlight .gu{color:var(--note);font-weight:600}
.highlight .err{color:inherit;border:0}

/* callouts: <div class="callout callout-note|tip|warning|important|caution"><div class="callout-title">…</div>…</div> */
.callout{--c:var(--note);--cb:var(--note-bg);position:relative;margin:18px 0;padding:12px 16px 12px 46px;border-radius:10px;background:var(--cb);font-size:15px}
.callout::before{content:"";position:absolute;left:16px;top:15px;width:18px;height:18px;background:var(--c);-webkit-mask:var(--icon) center/contain no-repeat;mask:var(--icon) center/contain no-repeat}
.callout>:last-child{margin-bottom:0}
.callout>p{margin:4px 0}
.callout-title{font-weight:600;margin-bottom:2px}
.callout-note{--icon:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 11v5M12 8h.01'/%3E%3C/svg%3E")}
.callout-tip{--c:var(--tip);--cb:var(--tip-bg);--icon:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 18h6M10 21h4M12 3a6 6 0 0 0-4 10.5c.8.8 1 1.5 1 2.5h6c0-1 .2-1.7 1-2.5A6 6 0 0 0 12 3Z'/%3E%3C/svg%3E")}
.callout-warning{--c:var(--warn);--cb:var(--warn-bg);--icon:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3 2 20h20L12 3Z'/%3E%3Cpath d='M12 10v4M12 17h.01'/%3E%3C/svg%3E")}
.callout-caution{--c:var(--danger);--cb:var(--danger-bg);--icon:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 3h8l5 5v8l-5 5H8l-5-5V8z'/%3E%3Cpath d='M12 8v5M12 16h.01'/%3E%3C/svg%3E")}
.callout-important{--c:var(--important);--cb:var(--important-bg);--icon:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12a9 9 0 1 1-18 0 9 9 0 0 1 18 0Z'/%3E%3Cpath d='M12 7v6M12 16.5h.01'/%3E%3C/svg%3E")}

/* pager + edit bar */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:56px}
.pager a{display:grid;gap:2px;padding:14px 16px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--fg)}
.pager a:hover{border-color:var(--accent)}
.pager small{color:var(--muted);font-size:12.5px}
.pager .next{text-align:right;grid-column:2}
.editbar{margin-top:28px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--muted)}
.editbar a{color:var(--muted)}

/* on this page */
.toc{position:sticky;top:calc(var(--header-h) + env(safe-area-inset-top,0px));align-self:start;max-height:calc(100vh - var(--header-h));overflow:auto;padding-block:32px;font-size:13.5px}
.toc h2{font:500 11.5px var(--f-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
.toc ul{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:4px 0 4px 12px;margin-left:-1px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;line-height:1.4}
.toc a.l3{padding-left:24px}
.toc a:hover{color:var(--fg)}
.toc a.on{color:var(--accent);border-left-color:var(--accent)}

/* ---------- search palette ---------- */
.palette{position:fixed;inset:0;z-index:50;background:var(--scrim);display:flex;justify-content:center;align-items:flex-start;padding:calc(10vh + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) 16px max(16px,env(safe-area-inset-left,0px))}
.palette .box{width:min(640px,100%);background:var(--bg);border:1px solid var(--line);border-radius:12px;box-shadow:0 20px 60px -20px rgba(0,0,0,.35);overflow:hidden}
.palette input{width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--fg);font:inherit;font-size:17px;padding:16px 18px;outline:none}
.palette ul{list-style:none;margin:0;padding:6px;max-height:min(440px,60vh);overflow:auto}
.palette li a{display:grid;gap:2px;padding:9px 12px;border-radius:8px;text-decoration:none;color:var(--fg)}
.palette li a small{color:var(--muted);font-size:12.5px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.palette li a .s{color:var(--muted);font-size:12px}
.palette li a.sel,.palette li a:hover{background:var(--accent-soft)}
.palette mark{background:none;color:var(--accent);font-weight:600}
.palette .foot{display:flex;gap:14px;padding:8px 14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.palette .empty{padding:18px;color:var(--muted);font-size:14px}

/* ---------- 404 ---------- */
.notfound{max-width:640px;margin:0 auto;padding-block:96px;display:grid;gap:14px}
.notfound h1{font:650 40px/1.1 var(--f-display);margin:0}
.notfound p{margin:0;color:var(--muted)}

/* ---------- responsive ---------- */
@media (max-width:1180px){.doc-shell{grid-template-columns:240px minmax(0,1fr)}.toc{display:none}}
@media (max-width:860px){
  .doc-shell{grid-template-columns:minmax(0,1fr);gap:0}
  .menu-btn{display:grid}
  .sidenav{position:fixed;z-index:40;top:0;bottom:0;left:0;width:min(300px,86vw);max-height:none;background:var(--bg);border-right:1px solid var(--line);padding:calc(16px + env(safe-area-inset-top,0px)) 20px 40px max(20px,env(safe-area-inset-left,0px));transform:translateX(-100%);visibility:hidden;transition:transform .2s ease,visibility .2s}
  .sidenav.open{transform:none;visibility:visible;box-shadow:0 0 0 100vmax var(--scrim)}
  .drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
  .top-links{display:none}
  .brand small{display:none}
}
@media (max-width:560px){
  .search-btn{width:auto;flex:1}
  .search-btn kbd{display:none}
  .home{padding-block:36px 56px}
  .pager{grid-template-columns:1fr}
  .pager .next{text-align:left;grid-column:auto}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{.top,.sidenav,.toc,.pager,.editbar,.site-foot,.codebar{display:none!important}.doc-shell{display:block}.doc{max-width:none}}
.palette input::-webkit-search-cancel-button{-webkit-appearance:none;display:none}

/* ---------- slide viewer ----------
   Markup from the renderer: <div class="slides" data-pdf="…" data-pptx="…" data-title="…"><a href="…">Open the slides (PDF)</a></div>
   docs.js replaces the inner link with the viewer and renders the PDF with the self-hosted pdf.js. */
.slides{margin:24px 0 28px;border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}
.slides>a:only-child{display:block;padding:16px}
.slides .stage{position:relative;aspect-ratio:var(--ratio,16/9);max-width:100%;background:var(--surface);touch-action:pan-y;outline:none}
.slides .stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;background:#fff}
.slides .stage .state{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);font-size:14px;text-align:center;padding:16px}
.slides .nav{position:absolute;top:0;bottom:0;width:22%;max-width:120px;display:flex;align-items:center;border:0;background:none;color:var(--fg);cursor:pointer;opacity:0;transition:opacity .15s;padding:0 10px}
.slides .nav.prev{left:0;justify-content:flex-start}.slides .nav.next{right:0;justify-content:flex-end}
.slides .nav span{width:36px;height:36px;border-radius:999px;display:grid;place-items:center;background:color-mix(in srgb,var(--bg) 88%,transparent);border:1px solid var(--line);box-shadow:0 2px 8px rgba(0,0,0,.12)}
.slides .nav svg{width:18px;height:18px}
.slides .stage:hover .nav:not(:disabled),.slides .nav:focus-visible{opacity:1}
.slides .nav:disabled{cursor:default}
.slides .vbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:8px 10px 8px 14px;border-top:1px solid var(--line);background:var(--bg);font-size:13px}
.slides .vbar .ttl{flex:1;min-width:0;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.slides .count{font:400 12.5px var(--f-mono);color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.slides .ctl{display:flex;gap:4px}
.slides .ctl button{width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line);border-radius:7px;background:transparent;color:var(--fg);cursor:pointer;padding:0}
.slides .ctl button:disabled{opacity:.4;cursor:default}
.slides .ctl svg{width:16px;height:16px}
.slides .dl{display:flex;flex-wrap:wrap;gap:8px;padding:10px 14px 12px;border-top:1px solid var(--line);background:var(--bg)}
.slides .dl a{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:8px;border:1px solid var(--line);text-decoration:none;color:var(--fg);font-size:14px;font-weight:500}
.slides .dl a.primary{background:var(--accent);border-color:var(--accent);color:var(--bg)}
.slides .dl a:hover{border-color:var(--accent)}
.slides .dl svg{width:16px;height:16px}
.slides .dl small{font-weight:400;opacity:.75;font-variant-numeric:tabular-nums}
.slides.is-full{position:fixed;inset:0;z-index:60;margin:0;border:0;border-radius:0;display:flex;flex-direction:column;background:#111;padding:env(safe-area-inset-top,0px) env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px)}
.slides.is-full .stage{flex:1;aspect-ratio:auto;background:#111}
.slides.is-full .stage canvas{inset:auto;left:50%;top:50%;transform:translate(-50%,-50%);width:auto;height:auto;max-width:100%;max-height:100%}
.slides.is-full .dl{display:none}
.slides:fullscreen{background:#111}
@media (max-width:560px){.slides .nav{display:none}.slides .vbar .ttl{flex-basis:100%;order:-1}}
@media print{.slides .vbar,.slides .dl,.slides .nav{display:none!important}}
.slides .ctl{margin-left:auto}
.slides .vbar .ttl+.count{margin-left:0}
.slides.is-full .vbar{background:#111;border-top-color:#2a2a2a;color:#e8e8e8}
.slides.is-full .count{color:#a8a8a8}
.slides.is-full .ctl button{border-color:#3a3a3a;color:#e8e8e8}
.slides .vbar{position:relative}
.slides .vbar::before{content:"";position:absolute;left:0;top:-1px;height:2px;width:var(--progress,0%);background:var(--accent);transition:width .2s}