:root{
    --bg: oklch(0.965 0.008 75);
    --ink: oklch(0.20 0.012 60);
    --ink-soft: oklch(0.45 0.012 60);
    --ink-faint: oklch(0.50 0.010 60);
    --line: oklch(0.90 0.008 70);
    --line-soft: oklch(0.93 0.008 70);
    --card: oklch(0.985 0.005 75);
    --code-bg: oklch(0.20 0.012 60);     /* dark code panel, like xquik */
    --code-ink: oklch(0.92 0.006 75);
    --accent: oklch(0.68 0.19 40);
    --focus-ring: oklch(0.55 0.20 40);
    --black: oklch(0.16 0.010 60);
    /* docs layout rails */
    --sidebar-w: 248px;
    --toc-w: 200px;
    --nav-h: 64px;
  }
  *{box-sizing:border-box}
  html{background:var(--bg)}
  html,body{margin:0;padding:0;color:var(--ink);font-family:"Inter",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
  /* Engraving backdrop, shared with the rest of the site. Faded behind the
     docs content so the reading column stays legible. */
  body::before{
    content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
    background:url("assets/engraving-bg-v2.png") center top / cover no-repeat;
    background-color:var(--bg);
    height:115%;
    opacity:0.55;
    transform:translateY(var(--bg-shift, 0px));
    will-change:transform;
  }
  @media (prefers-reduced-motion:reduce){body::before{transform:none}}
  a{color:inherit;text-decoration:none}
  :focus{outline:none}
  :focus-visible{outline:2px solid var(--focus-ring);outline-offset:3px;border-radius:6px}
  .serif{font-family:"Instrument Serif",serif;font-weight:400;font-style:italic;letter-spacing:-0.01em}
  .skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:0 0 8px 0;font-size:14px}
  .skip-link:focus{left:0}
  code,pre,kbd{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace}

  /* ---------- Top nav (slim, docs variant) ---------- */
  .nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:color-mix(in oklab, var(--bg) 80%, transparent);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line)}
  .nav-inner{max-width:1280px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 24px;gap:24px}
  .nav-left{display:flex;align-items:center}
  .brand{display:flex;align-items:center;gap:10px}
  .brand-mark{width:22px;height:22px;display:block;object-fit:cover}
  .brand-word{font-family:"Instrument Serif",serif;font-style:italic;font-size:21px;letter-spacing:-0.01em}
  .brand-sub{font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-faint);padding-left:10px;margin-left:4px;border-left:1px solid var(--line)}
  .nav-links{display:flex;gap:22px;align-items:center;font-size:13.5px;color:var(--ink-soft)}
  .nav-links a{display:inline-flex;align-items:center;min-height:24px}
  .nav-links a:hover{color:var(--ink)}
  .nav-links a.active{color:var(--ink);font-weight:500}
  .nav-cta{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:500;padding:7px 13px;border-radius:8px;background:var(--black);color:#fafafa;border:1px solid var(--black);transition:transform .2s ease}
  .nav-cta:hover{transform:translateY(-1px)}
  .nav-cta svg{transition:transform .2s ease}
  .nav-cta:hover svg{transform:translateX(3px)}
  .nav-toggle{display:none;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--ink);cursor:pointer;padding:0}
  .nav-toggle .bar,.nav-toggle .bar::before,.nav-toggle .bar::after{display:block;width:16px;height:2px;background:currentColor;border-radius:2px;position:relative}
  .nav-toggle .bar::before{content:'';position:absolute;top:-5px}
  .nav-toggle .bar::after{content:'';position:absolute;top:5px}

  /* ---------- 3-column docs shell ---------- */
  .docs{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr) var(--toc-w);gap:0;align-items:start}

  /* Left sidebar nav — sticky under the top nav. */
  .sidebar{position:sticky;top:var(--nav-h);align-self:start;height:calc(100vh - var(--nav-h));overflow-y:auto;padding:28px 20px 60px 24px;border-right:1px solid var(--line-soft)}
  .side-search{width:100%;display:flex;align-items:center;gap:8px;padding:8px 11px;border:1px solid var(--line);border-radius:9px;background:var(--card);color:var(--ink-faint);font-size:13px;margin-bottom:22px;cursor:text}
  .side-search kbd{margin-left:auto;font-size:11px;padding:1px 6px;border:1px solid var(--line);border-radius:5px;background:var(--bg);color:var(--ink-faint)}
  .side-group{margin-bottom:24px}
  .side-group > .side-label{font-size:10.5px;letter-spacing:0.18em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 10px;font-weight:600}
  .side-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:1px}
  .side-nav a{display:flex;align-items:center;gap:9px;padding:6px 10px;border-radius:8px;font-size:13.5px;color:var(--ink-soft);min-height:30px;transition:background .12s,color .12s}
  .side-nav a:hover{background:color-mix(in oklab, var(--card) 70%, transparent);color:var(--ink)}
  .side-nav a.active{background:color-mix(in oklab, var(--accent) 12%, transparent);color:var(--ink);font-weight:500}
  /* HTTP method chips, xquik-style */
  .verb{font-size:10px;font-weight:600;letter-spacing:0.04em;padding:2px 5px;border-radius:5px;line-height:1;min-width:38px;text-align:center;font-family:"JetBrains Mono",monospace}
  .verb.get{background:color-mix(in oklab,#2563eb 14%,transparent);color:#1d4ed8}
  .verb.post{background:color-mix(in oklab,var(--accent) 16%,transparent);color:var(--accent)}
  .verb.del{background:color-mix(in oklab,#dc2626 13%,transparent);color:#b91c1c}

  /* Center content column. */
  .content{min-width:0;padding:44px 56px 120px;max-width:780px}
  .crumbs{font-size:12.5px;color:var(--ink-faint);margin-bottom:18px;display:flex;gap:8px;align-items:center}
  .crumbs a:hover{color:var(--ink)}
  .content h1{font-family:"Instrument Serif",serif;font-style:italic;font-weight:400;font-size:clamp(40px,5vw,54px);line-height:1.04;letter-spacing:-0.01em;margin:0 0 16px}
  .content .lede{font-size:16px;line-height:1.6;color:var(--ink-soft);margin:0 0 36px;max-width:640px}
  .content h2{font-family:"Instrument Serif",serif;font-style:italic;font-weight:400;font-size:30px;letter-spacing:-0.01em;margin:52px 0 16px;scroll-margin-top:calc(var(--nav-h) + 20px);position:relative}
  .content h2 .anchor{opacity:0;color:var(--ink-faint);margin-left:8px;font-style:normal;font-size:18px;transition:opacity .15s}
  .content h2:hover .anchor{opacity:1}
  .content h3{font-size:15px;font-weight:600;margin:32px 0 10px;letter-spacing:-0.005em;scroll-margin-top:calc(var(--nav-h) + 20px)}
  .content p{font-size:14.5px;line-height:1.65;color:var(--ink-soft);margin:0 0 16px}
  .content p strong{color:var(--ink);font-weight:600}
  .content ul{margin:0 0 18px;padding-left:20px;font-size:14.5px;line-height:1.65;color:var(--ink-soft)}
  .content li{margin:5px 0}
  .content a.link{color:var(--ink);border-bottom:1px solid var(--line)}
  .content a.link:hover{border-bottom-color:var(--ink)}
  .content code:not(pre code){background:color-mix(in oklab,var(--ink) 7%,transparent);color:var(--ink);font-size:0.86em;padding:1.5px 6px;border-radius:6px;border:1px solid var(--line-soft)}

  /* Code blocks — dark panel, copy button. */
  .code{position:relative;margin:0 0 24px;border-radius:12px;overflow:hidden;border:1px solid var(--black);background:var(--code-bg);box-shadow:0 10px 30px -18px rgba(40,30,20,0.5)}
  .code-bar{display:flex;align-items:center;gap:10px;padding:9px 14px;background:color-mix(in oklab,var(--code-bg) 88%,#000);border-bottom:1px solid rgba(255,255,255,0.07)}
  .code-bar .dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,0.18)}
  .code-bar .fname{font-size:11.5px;color:rgba(255,255,255,0.55);font-family:"JetBrains Mono",monospace;margin-left:4px}
  .code-copy{margin-left:auto;font-size:11px;color:rgba(255,255,255,0.6);background:transparent;border:1px solid rgba(255,255,255,0.16);border-radius:6px;padding:3px 9px;cursor:pointer;font-family:inherit;transition:all .15s}
  .code-copy:hover{color:#fff;border-color:rgba(255,255,255,0.4)}
  .code-copy.copied{color:var(--accent);border-color:var(--accent)}
  .code pre{margin:0;padding:16px 18px;overflow-x:auto;font-size:13px;line-height:1.6;color:var(--code-ink)}
  .code pre .tok-key{color:#e5c07b}
  .code pre .tok-str{color:#98c379}
  .code pre .tok-com{color:rgba(255,255,255,0.38)}
  .code pre .tok-verb{color:var(--accent);font-weight:600}

  /* Callout / note box. */
  .note{display:flex;gap:12px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:color-mix(in oklab,var(--card) 80%,transparent);margin:0 0 24px;font-size:13.5px;line-height:1.6;color:var(--ink-soft)}
  .note .ic{flex:0 0 auto;color:var(--accent);margin-top:1px}
  .note.warn{border-color:color-mix(in oklab,var(--accent) 30%,var(--line))}
  .note strong{color:var(--ink)}

  /* Definition table for conventions / errors. */
  .deftable{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:13.5px}
  .deftable th{text-align:left;font-weight:600;color:var(--ink);padding:9px 12px;border-bottom:1px solid var(--line);font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:var(--ink-faint)}
  .deftable td{padding:11px 12px;border-bottom:1px solid var(--line-soft);color:var(--ink-soft);vertical-align:top;line-height:1.5}
  .deftable td:first-child{white-space:nowrap}
  .deftable code{background:color-mix(in oklab,var(--ink) 7%,transparent);padding:1.5px 6px;border-radius:6px;font-size:12.5px}

  /* Endpoint catalogue cards. */
  .ep-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 24px}
  @media (max-width:640px){.ep-grid{grid-template-columns:1fr}}
  .ep{display:flex;align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:var(--card);font-size:13px;color:var(--ink);transition:border-color .15s,transform .15s}
  .ep:hover{border-color:var(--ink);transform:translateY(-1px)}
  .ep code{font-size:12.5px;color:var(--ink-soft)}

  /* Page footer nav (prev/next). */
  .page-nav{display:flex;justify-content:space-between;gap:16px;margin-top:64px;padding-top:28px;border-top:1px solid var(--line-soft)}
  .page-nav a{flex:1;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--card);transition:border-color .15s}
  .page-nav a:hover{border-color:var(--ink)}
  .page-nav .dir{font-size:11px;letter-spacing:0.12em;text-transform:uppercase;color:var(--ink-faint)}
  .page-nav .ttl{font-size:14.5px;font-weight:500;color:var(--ink);margin-top:4px}
  .page-nav .next{text-align:right}

  /* Right TOC — sticky. */
  .toc{position:sticky;top:var(--nav-h);align-self:start;height:calc(100vh - var(--nav-h));overflow-y:auto;padding:48px 24px 60px 12px}
  .toc-label{font-size:10.5px;letter-spacing:0.16em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:14px;font-weight:600}
  .toc ul{list-style:none;margin:0;padding:0;border-left:1px solid var(--line-soft);display:flex;flex-direction:column}
  .toc a{display:block;padding:5px 0 5px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:12.5px;color:var(--ink-faint);line-height:1.4}
  .toc a:hover{color:var(--ink)}
  .toc a.active{color:var(--ink);border-left-color:var(--accent);font-weight:500}

  /* ---------- Responsive ---------- */
  @media (max-width:1100px){
    :root{--toc-w:0px}
    .docs{grid-template-columns:var(--sidebar-w) minmax(0,1fr)}
    .toc{display:none}
    .content{padding:40px 40px 100px}
  }
  @media (max-width:860px){
    .docs{grid-template-columns:1fr}
    .nav-links{display:none}
    .nav-toggle{display:inline-flex}
    .nav-left{gap:12px}
    /* Drawer: explicit viewport-bound height + own scroll context, so the
       full section list is always reachable regardless of page scroll. */
    .sidebar{position:fixed;top:var(--nav-h);left:0;width:280px;max-width:84vw;background:color-mix(in oklab,var(--bg) 97%,transparent);backdrop-filter:saturate(140%) blur(12px);border-right:1px solid var(--line);height:calc(100vh - var(--nav-h));height:calc(100dvh - var(--nav-h));overflow-y:auto;overscroll-behavior:contain;z-index:45;transform:translateX(-100%);transition:transform .22s ease}
    body.side-open .sidebar{transform:translateX(0)}
    /* Push the page beside the drawer instead of dimming it. The page keeps
       scrolling normally while the drawer is open. */
    .content{padding:32px 22px 90px;max-width:none;transition:transform .22s ease}
    body.side-open .content{transform:translateX(min(280px,84vw))}
    body.side-open{overflow-x:hidden}
    /* Transparent click-catcher over the pushed page: tap outside closes the
       drawer; wheel events still reach the page scroll underneath. */
    .side-backdrop{position:fixed;inset:var(--nav-h) 0 0;background:transparent;pointer-events:none;z-index:44}
    body.side-open .side-backdrop{pointer-events:auto}
  }
  @media (max-width:600px){
    /* Phones: no room to push the page beside a 280px drawer — overlay
       instead, leave the page in place, dim it as the tap-to-close area. */
    body.side-open .content{transform:none}
    .side-backdrop{background:rgba(20,15,10,0.28);opacity:0;transition:opacity .2s}
    body.side-open .side-backdrop{opacity:1}
  }

  /* ============ Endpoint page components ============ */
  /* Method + path header banner. */
  .ep-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:4px 0 22px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
  .ep-head .verb{font-size:12px;min-width:48px;padding:4px 9px}
  .ep-head .path{font-family:"JetBrains Mono",monospace;font-size:14px;color:var(--ink);font-weight:500;overflow-wrap:anywhere}
  .ep-head .mcp{margin-left:auto;font-size:11.5px;color:var(--ink-faint)}
  .ep-head .mcp code{font-family:"JetBrains Mono",monospace;color:var(--ink-soft);background:color-mix(in oklab,var(--ink) 7%,transparent);padding:2px 7px;border-radius:6px}
  .anchor-cite{display:flex;gap:10px;align-items:flex-start;font-size:12.5px;color:var(--ink-soft);margin:0 0 28px;line-height:1.5}
  .anchor-cite .ic{flex:0 0 auto;color:var(--accent);margin-top:1px}

  /* Schema field list (one row per JSON field). */
  .schema{border:1px solid var(--line-soft);border-radius:12px;overflow:hidden;margin:0 0 24px}
  .schema-row{display:grid;grid-template-columns:200px 1fr;gap:16px;padding:11px 16px;border-bottom:1px solid var(--line-soft);font-size:13px}
  .schema-row:last-child{border-bottom:0}
  .schema-row .fname{font-family:"JetBrains Mono",monospace;color:var(--ink);font-weight:500;overflow-wrap:anywhere}
  .schema-row .ftype{color:var(--ink-faint);font-size:12px;font-family:"JetBrains Mono",monospace}
  .schema-row .fval{color:var(--ink-soft);overflow-wrap:anywhere}
  @media (max-width:520px){.schema-row{grid-template-columns:1fr;gap:3px}}

  /* Tabs (cURL / response). */
  .tabs{display:flex;gap:4px;margin-bottom:0}
  .tab{font-size:12.5px;padding:7px 13px;border:1px solid transparent;border-bottom:0;border-radius:9px 9px 0 0;background:transparent;color:var(--ink-faint);cursor:pointer;font-family:inherit;position:relative;top:1px}
  .tab.active{color:var(--ink);background:var(--code-bg);border-color:var(--black)}
  .tab-panel{display:none}
  .tab-panel.active{display:block}
  .tabs + .code,.tabs + .tab-panel .code{border-top-left-radius:0}

  /* Section anchor heading variant used on endpoint pages. */
  .content h2.sub{font-size:24px;margin:40px 0 14px}