:root{
  --bg:#ffffff;
  --ink:#1b1c1e;
  --muted:#6b7280;
  --muted-2:#9aa1ac;
  --line:#eceef1;
  --line-strong:#e2e5e9;
  --sidebar:#fbfbfc;
  --accent:#e8612c;
  --accent-soft:#fdeee7;
  --code-bg:#f7f8fa;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;font-size:15px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none}

/* ---- top bar ---- */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:22px;height:58px;padding:0 22px;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line);}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.01em;font-size:16px;}
.brand .logo{width:24px;height:24px;border-radius:7px;background:var(--ink);display:grid;place-items:center;}
.brand .logo svg{width:14px;height:14px;stroke:#fff;fill:none;stroke-width:1.8;}
.search{flex:1;max-width:520px;display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border:1px solid var(--line-strong);border-radius:9px;color:var(--muted);background:#fff;cursor:text;font-size:13.5px;}
.search .kbd{margin-left:auto;display:flex;gap:3px;}
.search .kbd span{font-family:var(--mono);font-size:10.5px;border:1px solid var(--line-strong);border-radius:5px;padding:1px 5px;color:var(--muted-2);}
.topnav-right{display:flex;align-items:center;gap:18px;margin-left:auto;font-size:14px;color:var(--muted);}
.topnav-right a:hover{color:var(--ink);}
.btn{border:1px solid var(--line-strong);background:#fff;border-radius:9px;padding:8px 15px;font-size:13.5px;font-weight:600;cursor:pointer;}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;}

/* ---- tabs row ---- */
.tabs{display:flex;align-items:center;gap:26px;height:46px;padding:0 22px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);position:sticky;top:58px;background:#fff;z-index:30;}
.tabs a{display:flex;align-items:center;gap:7px;height:100%;border-bottom:2px solid transparent;}
.tabs a.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600;}
.tabs a:hover{color:var(--ink);}
.tabs .lang{margin-left:auto;font-size:13px;}

/* ---- layout ---- */
.layout{display:grid;grid-template-columns:288px minmax(0,1fr) 220px;gap:0;max-width:1500px;margin:0 auto;}
.sidebar{border-right:1px solid var(--line);padding:26px 16px 60px;position:sticky;top:104px;height:calc(100vh - 104px);overflow-y:auto;}
.sb-group{margin-bottom:22px;}
.sb-title{font-size:11px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--muted-2);padding:0 10px;margin-bottom:8px;}
.sb-link{display:flex;align-items:center;gap:9px;padding:6.5px 10px;border-radius:8px;font-size:14px;color:#3f434a;border-left:2px solid transparent;}
.sb-link:hover{background:var(--sidebar);color:var(--ink);}
.sb-link.active{color:var(--accent);background:var(--accent-soft);font-weight:600;}
.sb-link .ico{width:15px;height:15px;flex:0 0 auto;opacity:.7;stroke:currentColor;fill:none;stroke-width:1.7;}
.powered{margin-top:18px;display:flex;align-items:center;gap:9px;padding:11px 12px;border:1px solid var(--line);border-radius:11px;font-size:12.5px;color:var(--muted);}

/* ---- content ---- */
.content{padding:40px clamp(20px,4vw,56px) 120px;min-width:0;}
.content h1{font-size:34px;font-weight:700;letter-spacing:-.025em;display:flex;align-items:center;gap:12px;}
.content h1 .bk{width:30px;height:30px;opacity:.85;stroke:var(--ink);fill:none;stroke-width:1.6;}
.lead{color:var(--muted);font-size:17px;margin-top:14px;max-width:62ch;}
.content section{scroll-margin-top:124px;}
.content h2{font-size:23px;font-weight:700;letter-spacing:-.02em;margin:46px 0 6px;padding-top:8px;}
.content h3{font-size:16.5px;font-weight:650;margin:26px 0 6px;}
.content p{margin:10px 0;color:#34373c;}
.content p.sub{color:var(--muted);}
.content ul{margin:10px 0 10px 22px;color:#34373c;}
.content li{margin:5px 0;}
.content a.ilink{color:var(--accent);font-weight:500;border-bottom:1px solid transparent;}
.content a.ilink:hover{border-bottom-color:var(--accent);}
.hr{border:0;border-top:1px solid var(--line);margin:30px 0;}
code.inline{font-family:var(--mono);font-size:12.8px;background:var(--code-bg);border:1px solid var(--line);border-radius:5px;padding:1px 5px;}

/* ---- cards ---- */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:30px;}
.card{border:1px solid var(--line-strong);border-radius:14px;overflow:hidden;transition:border-color .15s,transform .12s,box-shadow .15s;background:#fff;}
.card:hover{border-color:#d4d8de;transform:translateY(-2px);box-shadow:0 10px 26px -18px rgba(0,0,0,.3);}
.card .art{height:120px;background:linear-gradient(135deg,#fff,#f4f5f7);display:grid;place-items:center;border-bottom:1px solid var(--line);}
.card .art .glyph{width:46px;height:46px;border-radius:12px;background:#fff;border:1px solid var(--line-strong);display:grid;place-items:center;box-shadow:0 6px 16px -10px rgba(0,0,0,.35);}
.card .art .glyph svg{width:22px;height:22px;stroke:var(--ink);fill:none;stroke-width:1.6;}
.card .body{padding:15px 16px 18px;}
.card .body .t{font-weight:650;font-size:15px;}
.card .body .d{color:var(--muted);font-size:13.5px;margin-top:5px;}

/* ---- code blocks ---- */
.code{margin:16px 0;border:1px solid var(--line-strong);border-radius:11px;overflow:hidden;background:var(--code-bg);}
.code-bar{display:flex;align-items:center;justify-content:space-between;padding:7px 12px;border-bottom:1px solid var(--line);background:#fff;}
.code-bar .lang{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2);}
.code-copy{border:1px solid var(--line-strong);background:#fff;border-radius:7px;font-family:var(--mono);font-size:11px;color:#5c5a54;padding:4px 9px;cursor:pointer;transition:background .15s,color .15s;}
.code-copy:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.code-copy.copied{background:#1b7a4b;color:#fff;border-color:#1b7a4b;}
.code pre{margin:0;padding:14px 14px;overflow-x:auto;scrollbar-width:thin;}
.code pre::-webkit-scrollbar{height:6px;}
.code pre::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:6px;}
.code code{font-family:var(--mono);font-size:12.8px;line-height:1.65;color:#24262a;white-space:pre;}
.tok-c{color:#b5482f;font-weight:600;}  /* command */
.tok-f{color:#8a8f98;}                   /* flag */
.tok-s{color:#1b7a4b;}                   /* string / path */
.tok-cm{color:#9aa1ac;font-style:italic;}/* comment */

/* ---- right rail ---- */
.right{padding:40px 18px;position:sticky;top:104px;height:calc(100vh - 104px);overflow-y:auto;}
.helpful .t{font-size:12.5px;color:var(--muted);margin-bottom:9px;}
.helpful .faces{display:flex;gap:8px;}
.helpful button{width:34px;height:34px;border:1px solid var(--line-strong);background:#fff;border-radius:9px;cursor:pointer;font-size:15px;transition:background .15s,border-color .15s,transform .12s;}
.helpful button:hover{background:var(--accent-soft);border-color:var(--accent);transform:translateY(-1px);}
.helpful button.picked{background:var(--accent);border-color:var(--accent);}
.onpage{margin-top:34px;}
.onpage .t{font-size:11px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--muted-2);margin-bottom:8px;}
.onpage a{display:block;font-size:13px;color:var(--muted);padding:3px 0;}
.onpage a:hover{color:var(--ink);}

/* ---- mobile ---- */
.menu-btn{display:none;border:1px solid var(--line-strong);background:#fff;border-radius:8px;padding:7px 10px;cursor:pointer;}
@media (max-width:1180px){
  .layout{grid-template-columns:288px minmax(0,1fr);}
  .right{display:none;}
}
@media (max-width:880px){
  .layout{grid-template-columns:1fr;}
  .sidebar{position:fixed;top:104px;left:0;width:280px;background:#fff;z-index:35;transform:translateX(-105%);transition:transform .2s;box-shadow:0 20px 50px -20px rgba(0,0,0,.3);}
  .sidebar.open{transform:translateX(0);}
  .menu-btn{display:inline-block;}
  .tabs{display:none;}
  .cards{grid-template-columns:1fr;}
}

/* ---- Material Symbols (icons) ---- */
.material-symbols-outlined{font-family:'Material Symbols Outlined';font-weight:400;font-style:normal;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;direction:ltr;-webkit-font-smoothing:antialiased;font-variation-settings:'FILL' 0,'wght' 400,'GRAD' 0,'opsz' 24;vertical-align:middle;}
.brand .logo .material-symbols-outlined{color:#fff;font-size:15px;}
.search .material-symbols-outlined{font-size:18px;}
.menu-btn .material-symbols-outlined{font-size:20px;}
.tabs a .material-symbols-outlined{font-size:18px;}
.tabs .lang .material-symbols-outlined{font-size:16px;}
/* override the old svg-sized .ico/.bk/.glyph so the font glyph isn't clipped */
.sb-link .ico{width:auto;height:auto;font-size:18px;opacity:.75;stroke:none;}
.sb-link.active .ico{opacity:1;}
.content h1 .bk{width:auto;height:auto;font-size:30px;opacity:.85;stroke:none;}
.card .art .glyph .material-symbols-outlined{font-size:24px;color:var(--ink);}
.powered .logo .material-symbols-outlined{color:#fff;font-size:11px;}
.helpful button .material-symbols-outlined{font-size:20px;}
.helpful button.picked .material-symbols-outlined{color:#fff;}