:root{
  --bg:#F4F7F6;--card:#fff;--ink:#0F1F1F;--muted:#5A6E6C;--line:#DCE3E0;
  --teal:#0B6E6E;--teal2:#0A585C;--gold:#C9A227;--radius:18px;
  --shadow:0 2px 4px rgba(15,40,40,.04),0 12px 32px -12px rgba(8,60,62,.18);
  --side:272px;--top:64px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0A1213;--card:#111D1E;--ink:#ECF4F2;--muted:#9BB0AD;--line:#26393B;
    --shadow:0 2px 4px rgba(0,0,0,.2),0 16px 40px -16px rgba(0,0,0,.55)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--top) + 16px)}
body{margin:0;font:16px/1.65 var(--sans);color:var(--ink);background:
  radial-gradient(900px 420px at 10% -10%,rgba(127,227,214,.18),transparent 60%),
  radial-gradient(700px 380px at 100% 0%,rgba(247,216,138,.14),transparent 55%),
  var(--bg)}
a{color:var(--teal);text-decoration:none}a:hover{text-decoration:underline}
.skip{position:absolute;left:-999px;top:0;background:var(--teal);color:#fff;padding:8px 12px;z-index:99}
.skip:focus{left:8px;top:8px}
.top{position:sticky;top:0;z-index:40;height:var(--top);display:flex;align-items:center;gap:12px;
  padding:0 20px;background:color-mix(in srgb,var(--card) 86%,transparent);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;text-decoration:none}
.brand img{width:28px;height:28px}.brand em{font-style:normal;font-weight:500;color:var(--muted);margin-left:4px}
.menu{display:none;border:1px solid var(--line);background:var(--card);border-radius:12px;width:44px;height:44px;place-items:center;color:var(--ink)}
.topnav{margin-left:auto;display:flex;align-items:center;gap:14px}
.topnav a{color:var(--muted);font-weight:500;text-decoration:none;min-height:44px;display:inline-flex;align-items:center;padding:0 6px}
.topnav .btn{background:linear-gradient(165deg,var(--teal),var(--teal2));color:#fff!important;padding:0 16px;border-radius:999px;
  box-shadow:0 8px 18px -8px rgba(8,80,80,.55)}
.shell{display:grid;grid-template-columns:var(--side) 1fr;max-width:1180px;margin:0 auto;min-height:calc(100vh - var(--top))}
.side{position:sticky;top:var(--top);align-self:start;height:calc(100vh - var(--top));overflow:auto;border-right:1px solid var(--line);
  background:color-mix(in srgb,var(--card) 70%,transparent)}
.side-inner{padding:20px 14px 40px}
.side-label{margin:18px 10px 8px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
.side a{display:block;padding:10px 12px;border-radius:12px;color:var(--ink);text-decoration:none;font-size:14px;min-height:44px}
.side a:hover,.side a.active{background:color-mix(in srgb,var(--teal) 12%,transparent);color:var(--teal);text-decoration:none}
.main{padding:28px 28px 80px;min-width:0}
article section{margin:0 0 48px;padding:28px;background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
.crumb{color:var(--muted);font-size:13px;margin:0 0 8px}
h1{font-size:clamp(28px,4vw,40px);line-height:1.2;margin:0 0 12px;letter-spacing:-.02em}
h2{font-size:clamp(22px,3vw,28px);margin:0 0 14px;letter-spacing:-.015em}
h3{font-size:18px;margin:22px 0 10px}
.lead{font-size:17px;color:var(--muted);max-width:52ch;margin:0 0 22px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.cards a{display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(180deg,color-mix(in srgb,var(--teal) 6%,var(--card)),var(--card));color:var(--ink);text-decoration:none;min-height:88px}
.cards a strong{font-size:15px}.cards a span{font-size:13px;color:var(--muted)}
table{width:100%;border-collapse:collapse;font-size:14px;overflow:auto;display:block}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
code{font-family:var(--mono);font-size:.9em;background:color-mix(in srgb,var(--teal) 8%,var(--card));padding:2px 6px;border-radius:6px}
.code{position:relative;margin:14px 0;border-radius:16px;border:1px solid var(--line);background:#0E1A1B;overflow:auto}
.code pre{margin:0;padding:16px 16px 18px;overflow:auto;max-width:100%}
.code code{background:transparent;color:#E7F2F0;padding:0;font-size:13px;line-height:1.55;white-space:pre}
.copy{position:absolute;top:10px;right:10px;z-index:2;border:0;border-radius:10px;padding:8px 12px;min-height:40px;
  background:rgba(255,255,255,.1);color:#fff;font-size:12px;cursor:pointer}
.copy:hover,.copy.ok{background:var(--teal)}
.tip,.warn{padding:12px 14px;border-radius:14px;margin:14px 0;font-size:14px}
.tip{background:color-mix(in srgb,var(--teal) 10%,var(--card));border:1px solid color-mix(in srgb,var(--teal) 25%,var(--line))}
.warn{background:color-mix(in srgb,#B93A22 10%,var(--card));border:1px solid color-mix(in srgb,#B93A22 28%,var(--line))}
details{border:1px solid var(--line);border-radius:14px;padding:4px 14px;margin:10px 0;background:color-mix(in srgb,var(--bg) 50%,var(--card))}
summary{cursor:pointer;font-weight:600;min-height:44px;display:flex;align-items:center}
ol,ul{padding-left:1.2em}
.docfoot{margin-top:28px;color:var(--muted);font-size:13px;text-align:center}
@media (max-width:960px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:var(--top) auto 0 0;width:min(86vw,320px);transform:translateX(-105%);transition:transform .22s;z-index:50;box-shadow:var(--shadow)}
  .side.open{transform:none}
  .menu{display:grid}
  .topnav a:not(.btn){display:none}
  .cards{grid-template-columns:1fr}
  .main{padding:16px 14px 64px}
  article section{padding:18px;border-radius:18px}
}
@media (max-width:480px) and (orientation:portrait){
  h1{font-size:26px}
}
@media (orientation:landscape) and (max-height:500px){
  .top{height:52px} :root{--top:52px}
}