/* Documentation pages (/docs and /docs/*). Pairs with site.css (shared header). */
:root{
  color-scheme:dark;
  --bg:#071019;--panel:#0c1824;--panel-2:#0f1f2d;--line:#22384a;--line-2:#2c4a60;
  --ink:#e8f1f8;--ink-2:#c9d9e5;--muted:#93a9ba;--accent:#7fcdf2;--accent-2:#55b8e8;--warm:#f2ae4d;
  --font-ui:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-head:"Archivo",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-padding-top:72px}
body.qo-docs,body.qo-docs-hub{margin:0;background:var(--bg) radial-gradient(1200px 600px at 85% -10%,#15304a 0,rgba(7,16,25,0) 60%) no-repeat;
  color:var(--ink);font:16px/1.65 var(--font-ui);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
code{font-family:var(--font-mono);font-size:.88em}

/* ------------------------------------------------------------ article layout */
.doc-shell{max-width:1360px;margin:0 auto;padding:28px clamp(16px,3vw,32px) 80px;display:grid;
  grid-template-columns:232px minmax(0,1fr) 208px;gap:clamp(24px,3.5vw,48px);align-items:start}
.doc-side,.doc-toc{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow:auto;font-size:14px;scrollbar-width:thin}
.doc-side-box>summary{display:none}
.doc-home{display:block;font-weight:650;color:var(--ink);padding:6px 10px;margin-bottom:6px;border-radius:6px}
.doc-nav,.doc-nav ul{list-style:none;margin:0;padding:0}
.doc-nav>li{margin:0 0 14px}
.doc-nav>li>span{display:block;padding:4px 10px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#7b93a6;font-weight:650}
.doc-nav a{display:block;padding:5px 10px;border-radius:6px;color:var(--ink-2);line-height:1.35}
.doc-nav a:hover{background:#0f2433;color:#fff;text-decoration:none}
.doc-nav a[aria-current="page"]{background:#12324a;color:#fff;box-shadow:inset 2px 0 0 var(--accent)}
.doc-main{min-width:0;max-width:780px}
.doc-crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin:2px 0 18px}
.doc-crumbs a{color:var(--muted)}
.doc-crumbs a:hover{color:var(--ink)}
.doc-crumbs [aria-current]{color:var(--ink-2)}
.doc-toc p{margin:0 0 8px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#7b93a6;font-weight:650}
.doc-toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.doc-toc a{display:block;padding:4px 0 4px 12px;margin-left:-1px;border-left:1px solid transparent;color:var(--muted);line-height:1.35}
.doc-toc a:hover{color:var(--ink);border-left-color:var(--line-2);text-decoration:none}

/* ------------------------------------------------------------ article typography */
.doc-body h1{font:700 clamp(30px,4.2vw,42px)/1.12 var(--font-head);letter-spacing:-.025em;margin:0 0 18px;color:#f4f9fd}
.doc-body h2{font:680 25px/1.25 var(--font-head);letter-spacing:-.015em;margin:44px 0 12px;padding-top:4px;color:#f1f7fb}
.doc-body h3{font:650 19px/1.3 var(--font-head);margin:30px 0 8px;color:#eaf3f9}
.doc-body h4{font:650 16px/1.3 var(--font-head);margin:24px 0 6px;color:var(--ink-2)}
.doc-body h2,.doc-body h3,.doc-body h4{position:relative}
.doc-body .anchor{position:absolute;left:-1.1em;width:1em;color:#46657c;opacity:0;font-weight:500}
.doc-body h2:hover .anchor,.doc-body h3:hover .anchor,.doc-body h4:hover .anchor,.doc-body .anchor:focus{opacity:1;text-decoration:none}
.doc-body p{margin:0 0 14px;color:var(--ink-2)}
.doc-body h1+p{font-size:18px;line-height:1.6;color:#d6e4ee}
.doc-body ul,.doc-body ol{margin:0 0 16px;padding-left:1.4em;color:var(--ink-2)}
.doc-body li{margin:4px 0}
.doc-body li>p{margin:0 0 8px}
.doc-body li::marker{color:#6f8aa0}
.doc-body strong{color:#f3f8fc;font-weight:650}
.doc-body :not(pre)>code,.doc-body a>code{background:#10202e;border:1px solid #1d3346;border-radius:5px;padding:.08em .38em;color:#dfeaf2;white-space:break-spaces}
.doc-body a>code{color:var(--accent);border-color:#24445c}
.doc-body .doc-img{display:block;max-width:100%;height:auto;margin:6px 0 20px;border-radius:10px;border:1px solid var(--line);background:#fcfcfb}
.doc-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.doc-body blockquote{margin:18px 0;padding:10px 16px;border-left:3px solid var(--warm);background:#1a1710;border-radius:0 8px 8px 0}
.doc-body blockquote p{color:#e4d6b6;margin:4px 0}
.doc-body .code{position:relative;margin:0 0 18px}
.doc-body .code-lang{position:absolute;top:8px;right:10px;font:600 10px/1 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:#6a8599}
.doc-body pre{margin:0;padding:14px 16px;background:#08131d;border:1px solid var(--line);border-radius:10px;overflow:auto;
  font:13.5px/1.55 var(--font-mono);color:#d7e6f0;tab-size:2}
.doc-body pre code{font-size:inherit}
.doc-body .table{overflow:auto;margin:0 0 18px;border:1px solid var(--line);border-radius:10px}
.doc-body table{border-collapse:collapse;width:100%;font-size:14.5px}
.doc-body th,.doc-body td{padding:8px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.doc-body th{background:var(--panel-2);color:#e6f0f7;font-weight:650;white-space:nowrap}
.doc-body tr:last-child td{border-bottom:0}
.doc-body td{color:var(--ink-2)}
/* math: TeX source until KaTeX typesets it */
.doc-body .math-display{margin:6px 0 18px;padding:10px 14px;overflow-x:auto;overflow-y:hidden;border-radius:8px;
  font:14px/1.5 var(--font-mono);color:#cfe3f1;white-space:pre-wrap;background:#0a1824;border:1px solid #17304a}
.doc-body .math-display:has(.katex-display){background:none;border-color:transparent;padding:2px 0;white-space:normal}
.doc-body .katex-display{margin:0}
.doc-body .katex{font-size:1.08em;color:#eef6fb}
.doc-body span.math{font-family:var(--font-mono);font-size:.92em}
.doc-body span.math:has(.katex){font-family:inherit;font-size:inherit}

.doc-pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:48px 0 16px}
.doc-pager a{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink);font-weight:600}
.doc-pager a:hover{border-color:var(--line-2);background:#0f2232;text-decoration:none}
.doc-pager span{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-bottom:2px}
.doc-next{grid-column:2;text-align:right}
.doc-source{font-size:13px;color:#7790a3;margin:8px 0 0}
.doc-source code{color:#9fb5c6}

@media (max-width:1180px){
  .doc-shell{grid-template-columns:220px minmax(0,1fr)}
  .doc-toc{display:none}
}
@media (max-width:900px){
  .doc-shell{display:block;padding-top:16px}
  .doc-side{position:static;max-height:none;margin-bottom:18px}
  .doc-side-box{border:1px solid var(--line);border-radius:10px;background:var(--panel)}
  .doc-side-box>summary{display:block;cursor:pointer;padding:10px 14px;font-weight:600;list-style:none}
  .doc-side-box>summary::-webkit-details-marker{display:none}
  .doc-side-box>summary::after{content:"";float:right;width:7px;height:7px;margin-top:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}
  .doc-side-box[open]>summary::after{transform:rotate(-135deg);margin-top:10px}
  .doc-side-box[open]{padding-bottom:8px}
  .doc-side-box .doc-home,.doc-side-box .doc-nav{margin-left:6px;margin-right:6px}
  .doc-body .anchor{display:none}
  .doc-pager{grid-template-columns:1fr}
  .doc-next{grid-column:1}
}

/* ------------------------------------------------------------ hub (/docs) */
.hub{max-width:1180px;margin:0 auto;padding:44px clamp(16px,3vw,32px) 80px}
.hub-eyebrow{font:650 12px/1 var(--font-ui);letter-spacing:.16em;text-transform:uppercase;color:#7ec8eb;margin:0}
.hub h1{font:700 clamp(32px,5vw,52px)/1.08 var(--font-head);letter-spacing:-.03em;margin:12px 0 14px;color:#f4f9fd}
.hub-lede{max-width:760px;font-size:18px;line-height:1.6;color:#c4d6e3;margin:0}
.hub-start{display:grid;grid-template-columns:1.25fr 1fr;gap:16px;margin:34px 0 8px}
.hub-feature{display:block;padding:22px 24px;border-radius:14px;border:1px solid #2c5876;
  background:linear-gradient(135deg,#10314a 0%,#0c1c2a 70%);color:var(--ink)}
.hub-feature:hover{text-decoration:none;border-color:#3d7aa3}
.hub-feature .k{font:650 11px/1 var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:#8fd3f5}
.hub-feature h2{font:700 26px/1.2 var(--font-head);margin:10px 0 8px;color:#fff}
.hub-feature p{margin:0;color:#c6d9e6}
.hub-feature .go{display:inline-block;margin-top:14px;color:var(--accent);font-weight:600}
.hub-side{display:grid;gap:12px}
.hub-mini{display:block;padding:16px 18px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--ink)}
.hub-mini:hover{text-decoration:none;border-color:var(--line-2);background:#0f2232}
.hub-mini b{display:block;font:650 16px/1.3 var(--font-head);margin-bottom:4px}
.hub-mini span{color:var(--muted);font-size:14px}
.doc-group{margin-top:36px}
.doc-group h2{font:650 13px/1 var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:#7b93a6;margin:0 0 12px}
.doc-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:12px}
.doc-card{display:flex;flex-direction:column;gap:6px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);min-height:100%}
.doc-card:hover{border-color:var(--line-2);background:#0f2232;text-decoration:none;transform:translateY(-1px)}
.doc-card-title{font:650 16px/1.3 var(--font-head);color:#f0f6fb}
.doc-card-text{font-size:14px;line-height:1.5;color:var(--muted)}
.hub-note{margin-top:40px;padding:14px 18px;border-left:3px solid var(--warm);background:#1a1710;border-radius:0 10px 10px 0;color:#e4d6b6;font-size:15px}
.hub-note b{color:#f6e3b8}
@media (max-width:820px){.hub-start{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.doc-card:hover{transform:none}}