:root{
  --bg:#ffffff; --bg-soft:#f7f6fb; --sidebar:#fbfafe; --card:#ffffff;
  --text:#1d1b27; --muted:#6b6878; --border:#e9e7f1; --border-strong:#dcd9ea;
  --accent:#7c3aed; --accent-2:#c026d3; --accent-soft:#f3eefe; --code-bg:#f4f2fb;
  --note:#6366f1; --note-bg:#eef0ff; --tip:#0ea5a4; --tip-bg:#e7faf8;
  --warn:#e0792b; --warn-bg:#fdf1e6;
  --shadow:0 1px 2px rgba(20,16,40,.05),0 8px 24px rgba(20,16,40,.06);
  --mono:"SF Mono",ui-monospace,"JetBrains Mono","Cascadia Code",Menlo,Consolas,monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
}
html[data-theme="dark"]{
  --bg:#131119; --bg-soft:#1a1822; --sidebar:#16141d; --card:#1c1a26;
  --text:#e8e6f0; --muted:#9b97ad; --border:#2a2738; --border-strong:#363248;
  --accent:#a78bfa; --accent-2:#e879f9; --accent-soft:#241d3a; --code-bg:#1f1c2b;
  --note:#818cf8; --note-bg:#1e1f3a; --tip:#2dd4bf; --tip-bg:#10302e;
  --warn:#f0a05a; --warn-bg:#34230f;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
  line-height:1.65;-webkit-font-smoothing:antialiased;font-size:16px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* top bar */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;
  height:58px;padding:0 22px;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--border)}
.crumbs{font-size:14px;font-weight:600;letter-spacing:.1px}
.crumbs .sep{margin:0 8px;color:var(--muted)}
.crumbs .muted,.muted{color:var(--muted);font-weight:500}
.spacer{flex:1}
.badge{font-size:11px;font-weight:700;letter-spacing:.4px;padding:4px 9px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);border:1px solid transparent;text-transform:uppercase}
.badge.draft{background:transparent;color:var(--muted);border-color:var(--border-strong)}
.themebtn,.menubtn{background:transparent;border:1px solid var(--border-strong);color:var(--text);
  width:36px;height:34px;border-radius:9px;cursor:pointer;font-size:15px;display:grid;place-items:center}
.themebtn:hover,.menubtn:hover{background:var(--bg-soft)}
.menubtn{display:none}

/* layout */
.layout{display:grid;grid-template-columns:268px minmax(0,1fr) 232px;max-width:1320px;margin:0 auto}

/* sidebar */
.sidebar{position:sticky;top:58px;align-self:start;height:calc(100vh - 58px);overflow:hidden;
  display:flex;flex-direction:column;background:var(--sidebar);border-right:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:11px;padding:20px 22px 14px;color:var(--text)}
.brand:hover{text-decoration:none}
.logo{width:34px;height:34px;border-radius:8px;object-fit:contain;display:block;
  box-shadow:var(--shadow)}
.brandtext{display:flex;flex-direction:column;font-weight:800;font-size:16px;line-height:1.1}
.brandtext small{font-weight:600;font-size:11px;color:var(--muted);letter-spacing:.3px;margin-top:2px}
.navscroll{overflow-y:auto;padding:6px 12px 28px;flex:1}
.navgroup{font-size:11px;font-weight:700;letter-spacing:.7px;text-transform:uppercase;color:var(--muted);
  margin:18px 10px 6px}
.navlink{display:block;padding:7px 11px;border-radius:8px;color:var(--text);font-size:14px;font-weight:500;
  opacity:.86}
.navlink:hover{background:var(--bg-soft);text-decoration:none;opacity:1}
.navlink.active{background:var(--accent-soft);color:var(--accent);font-weight:650;opacity:1}
.navlink.home{margin-top:4px;font-weight:600}

/* content */
.content{min-width:0;padding:38px 52px 60px}
.prose{max-width:780px}
.prose h1{font-size:33px;line-height:1.2;font-weight:800;letter-spacing:-.4px;margin:6px 0 18px}
.prose h2{font-size:23px;font-weight:750;letter-spacing:-.2px;margin:42px 0 12px;padding-top:10px;
  border-top:1px solid var(--border)}
.prose h3{font-size:18px;font-weight:700;margin:28px 0 8px}
.prose h4{font-size:15px;font-weight:700;margin:22px 0 6px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.prose p{margin:13px 0}
.prose strong{font-weight:700}
.anchor{margin-left:8px;color:var(--border-strong);font-weight:600;opacity:0;text-decoration:none;font-size:.8em}
h1:hover .anchor,h2:hover .anchor,h3:hover .anchor{opacity:1}
.prose ul,.prose ol{margin:13px 0;padding-left:24px}
.prose li{margin:6px 0}
.prose li>ul,.prose li>ol{margin:6px 0}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--code-bg);padding:.13em .42em;
  border-radius:6px;border:1px solid var(--border)}
.prose a.ext::after{content:"↗";font-size:.75em;margin-left:2px;vertical-align:super;opacity:.7}
hr{border:0;border-top:1px solid var(--border);margin:34px 0}

/* code blocks */
.codeblock{position:relative;margin:18px 0;border:1px solid var(--border);border-radius:12px;
  background:var(--code-bg);overflow:hidden;box-shadow:var(--shadow)}
.code-lang{position:absolute;top:0;right:0;font-family:var(--mono);font-size:10.5px;font-weight:700;
  letter-spacing:.6px;text-transform:uppercase;color:var(--muted);background:var(--bg-soft);
  padding:4px 10px;border-bottom-left-radius:9px;border-left:1px solid var(--border);border-bottom:1px solid var(--border)}
.codeblock pre{margin:0;padding:16px 18px;overflow-x:auto}
.codeblock code{font-family:var(--mono);font-size:13px;background:none;border:0;padding:0;line-height:1.6}

/* screenshots */
.prose figure.screenshot{margin:22px 0;border:1px solid var(--border);border-radius:12px;
  overflow:hidden;background:var(--card);box-shadow:var(--shadow)}
.prose figure.screenshot img{display:block;width:100%;height:auto}
.prose figure.screenshot figcaption{font-size:12.5px;color:var(--muted);padding:9px 14px;
  border-top:1px solid var(--border);background:var(--bg-soft)}
.prose p>img{max-width:100%;height:auto;border-radius:10px;border:1px solid var(--border)}

/* tables */
.tablewrap{margin:18px 0;border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;font-size:14px}
thead th{background:var(--bg-soft);text-align:left;font-weight:700;font-size:12.5px;letter-spacing:.2px;
  text-transform:uppercase;color:var(--muted);padding:11px 15px;border-bottom:1px solid var(--border-strong)}
tbody td{padding:11px 15px;border-bottom:1px solid var(--border);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:var(--bg-soft)}

/* callouts */
.callout{margin:18px 0;padding:14px 16px 14px 16px;border-radius:11px;border:1px solid var(--border);
  border-left:4px solid var(--note);background:var(--note-bg)}
.callout p{margin:6px 0}
.callout p:first-child{margin-top:0}.callout p:last-child{margin-bottom:0}
.callout.note{border-left-color:var(--note);background:var(--note-bg)}
.callout.tip{border-left-color:var(--tip);background:var(--tip-bg)}
.callout.warning{border-left-color:var(--warn);background:var(--warn-bg)}

/* on-this-page toc */
.toc{position:sticky;top:58px;align-self:start;height:calc(100vh - 58px);overflow-y:auto;
  padding:38px 20px;font-size:13px}
.toc-title{font-size:11px;font-weight:700;letter-spacing:.7px;text-transform:uppercase;color:var(--muted);
  margin-bottom:10px}
.toc a{display:block;color:var(--muted);padding:4px 0;border-left:2px solid var(--border);padding-left:12px;
  margin-left:-2px}
.toc a:hover{color:var(--text);text-decoration:none;border-left-color:var(--accent)}
.toc a.toc-l3{padding-left:24px;font-size:12.5px}

/* footer */
.pagefoot{max-width:780px;margin-top:48px;padding-top:20px;border-top:1px solid var(--border);
  font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* responsive */
.scrim{display:none}
@media(max-width:1100px){
  .layout{grid-template-columns:268px minmax(0,1fr)}
  .toc{display:none}
}
@media(max-width:820px){
  .layout{grid-template-columns:1fr}
  .menubtn{display:grid}
  .sidebar{position:fixed;top:58px;left:0;width:286px;z-index:40;transform:translateX(-105%);
    transition:transform .22s ease;box-shadow:var(--shadow)}
  body.nav-open .sidebar{transform:none}
  body.nav-open .scrim{display:block;position:fixed;inset:58px 0 0 0;background:rgba(10,8,20,.4);z-index:35}
  .content{padding:26px 20px 50px}
}