:root{
  --mono:"SF Mono","JetBrains Mono","Fira Code","Roboto Mono","Menlo","Consolas","Courier New",monospace;
  --sans:system-ui,-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",sans-serif;
  --ink:#111111;--muted:#5b6472;--faint:#8a93a3;--line:#e7e9ee;--blue:#0969da;--bg:#fff;--side:#fbfbfd;--code:#0d1117;--topH:56px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg)}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.topbar{position:sticky;top:0;z-index:20;height:var(--topH);display:flex;align-items:center;gap:16px;padding:0 22px;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:9px;color:inherit}
.brand .mk{width:26px;height:26px;border:2px solid var(--ink);border-radius:999px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--ink)}
.brand b{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.badge{font-family:var(--mono);font-size:10px;color:var(--faint);border:1px solid var(--line);border-radius:999px;padding:2px 9px}
.topbar nav{margin-left:auto;display:flex;gap:22px}
.topbar nav a{font-size:12px;font-weight:500;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.topbar nav a:hover{color:var(--ink);text-decoration:none}
.layout{display:grid;grid-template-columns:232px minmax(0,1fr);max-width:1240px;margin:0 auto}
.sidebar{position:sticky;top:var(--topH);align-self:start;height:calc(100vh - var(--topH));overflow-y:auto;padding:26px 14px 40px 22px;background:var(--side);border-right:1px solid var(--line)}
.sidebar .grp{font-size:10.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);margin:20px 0 8px}
.sidebar .grp:first-child{margin-top:0}
.sidebar a{display:block;font-size:13px;color:var(--muted);padding:5px 10px;border-radius:7px;line-height:1.3}
.sidebar a:hover{background:rgba(9,105,218,.06);color:var(--ink);text-decoration:none}
.sidebar a.active{background:rgba(9,105,218,.10);color:var(--blue);font-weight:600}
.main{padding:14px 40px 80px;min-width:0}
.sec{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:40px;padding:24px 0 4px}
.sec.full{grid-template-columns:1fr}
.prose{min-width:0}
.prose .ey{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--blue);margin-bottom:8px}
.prose h1{font-size:30px;font-weight:700;letter-spacing:-.02em;margin:0 0 12px}
.prose h2{font-size:20px;font-weight:700;letter-spacing:-.01em;margin:24px 0 12px}
.prose h3{font-size:14px;font-weight:700;margin:20px 0 6px}
.prose p{font-size:14.5px;line-height:1.72;color:var(--ink);margin:0 0 14px}
.prose ul{margin:0 0 14px;padding-left:18px}
.prose li{font-size:14.5px;line-height:1.7;color:var(--ink);margin-bottom:6px}
.prose b,.prose strong{color:var(--ink)}
.prose code{font-family:var(--mono);font-size:12.5px;color:#b1361e;background:#f5f0ee;padding:1px 5px;border-radius:4px}
.prose .kw{color:#b1361e;background:none;padding:0;font-weight:700}
.prose .lead{font-size:16px;color:var(--ink);line-height:1.7}
.prose table{width:100%;border-collapse:collapse;margin:6px 0 16px}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;font-size:13px;vertical-align:top}
.prose th{background:#f6f7f9;font-weight:700}
.copybtn{float:right;font-family:var(--mono);font-size:11px;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:8px;padding:6px 12px;cursor:pointer;transition:all .15s ease}
.copybtn:hover{border-color:var(--blue);color:var(--blue)}
.code{align-self:start;position:sticky;top:calc(var(--topH) + 24px)}
.codewrap{background:var(--code);border:1px solid #21262d;border-radius:12px;overflow:hidden;box-shadow:0 10px 30px rgba(13,17,23,.14)}
.codewrap + .codewrap{margin-top:12px}
.cbar{display:flex;align-items:center;gap:7px;padding:9px 13px;background:#161b22;border-bottom:1px solid #21262d}
.cbar i{width:9px;height:9px;border-radius:999px;background:#30363d;display:inline-block}
.cbar span{margin-left:6px;font-family:var(--mono);font-size:10.5px;color:#8b949e}
pre.code{margin:0;padding:13px 15px;overflow-x:auto;font-family:var(--mono);font-size:11.5px;line-height:1.7;color:#c9d1d9;white-space:pre}
pre.code .k{color:#79c0ff}pre.code .s{color:#a5d6ff}pre.code .l{color:#ff7b72}pre.code .c{color:#6e7681}pre.code .g{color:#3fb950}pre.code .r{color:#f85149}pre.code .p{color:#d2a8ff}
.pagefoot{grid-column:1 / -1;margin-top:36px;padding-top:20px;border-top:1px solid var(--line)}
.pager{display:flex;justify-content:space-between;gap:14px}
.pager a{flex:1;color:var(--ink)}
.pager a:hover{text-decoration:none}
.pager a:hover .ttl{color:var(--blue)}
.pager a.next{text-align:right}
.pager .dir{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--faint);margin-bottom:3px}
.pager .ttl{font-size:14px;font-weight:600}
.sec.full .prose{max-width:760px}
.doclinks{margin-top:6px}
.doclinks a{font-weight:600}
.pull{max-width:820px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;background:#f6f7f9;border-left:3px solid var(--ink);border-radius:0 8px 8px 0;padding:18px 22px;margin:34px 0}
.wave-art{text-align:center;margin:16px 0 0}
.wave-art img{max-width:100%;height:auto;opacity:.85}
.menu-btn{display:none}
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:fixed;top:var(--topH);left:0;bottom:0;width:260px;z-index:15;transform:translateX(-102%);transition:transform .2s ease;box-shadow:0 12px 40px rgba(0,0,0,.14)}
  .sidebar.open{transform:none}
  .sec{grid-template-columns:1fr;gap:18px}.code{position:static}
  .menu-btn{display:inline-flex;font-family:var(--mono);font-size:11px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:5px 10px;cursor:pointer}
  .main{padding:14px 20px 70px}
}