:root{--bg:#0b0c10;--panel:#141724;--panel-2:#10121a;--line:#22273a;--text:#f3f4f6;
--muted:#98a0b3;--brand:#ff7a45;--brand-2:#2d8cff;--radius:14px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:#7ab8ff;text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
header.site-header{border-bottom:1px solid var(--line);background:rgba(11,12,16,.92);
position:sticky;top:0;z-index:10;backdrop-filter:blur(8px)}
.site-header .wrap{display:flex;align-items:center;gap:18px;height:62px;max-width:1080px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--text);font-size:17px}
.brand-mark{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:14px}
.site-nav{display:flex;gap:16px;margin-left:auto;flex-wrap:wrap}
.site-nav a{font-size:15px}
.site-nav a:not(.btn){color:var(--muted)}
.site-nav a[aria-current]{color:var(--text)}
.btn{display:inline-block;padding:8px 16px;border-radius:10px;border:1px solid var(--line);
color:var(--text);font-size:15px}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));border:0;color:#fff}
.site-nav a.btn-primary{color:#fff;font-weight:600}
main{padding:36px 0 64px}
.breadcrumb{color:var(--muted);font-size:14px;margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
h1{font-size:30px;line-height:1.35;margin:0 0 12px}
.meta{color:var(--muted);font-size:14px;margin-bottom:26px}
.lead{font-size:17px;color:#d7dbe6;margin:0 0 26px}
article h2{font-size:21px;margin:34px 0 12px;padding-left:11px;border-left:3px solid var(--brand)}
article h3{font-size:17px;margin:24px 0 8px}
article p{margin:0 0 14px}
article ul,article ol{margin:0 0 16px;padding-left:22px}
article li{margin:6px 0}
table{width:100%;border-collapse:collapse;margin:14px 0 20px;font-size:15px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left}
th{background:var(--panel);color:#cfd5e4;font-weight:600}
.cta{margin:34px 0;padding:20px;border-radius:var(--radius);border:1px solid var(--line);
background:linear-gradient(135deg,rgba(255,122,69,.10),rgba(45,140,255,.10))}
.cta h3{margin:0 0 8px;font-size:17px}
.cta p{margin:0 0 14px;color:var(--muted)}
.related{margin-top:38px;padding-top:22px;border-top:1px solid var(--line)}
.related h2{border:0;padding:0;font-size:17px;margin:0 0 12px}
.related ul{list-style:none;padding:0;margin:0}
.related li{padding:10px 0;border-bottom:1px dashed var(--line)}
.related li:last-child{border-bottom:0}
.related span{display:block;color:var(--muted);font-size:14px}
.doc-links{margin:30px 0 4px;padding:18px 20px;border:1px solid var(--line);
border-radius:var(--radius);background:var(--panel-2)}
.doc-links h2{border:0;padding:0;font-size:17px;margin:0 0 10px}
.doc-links ul{list-style:none;padding:0;margin:0}
.doc-links li{padding:6px 0}
.card-list{list-style:none;padding:0;margin:0}
.card-list li{border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
margin-bottom:14px;background:var(--panel-2)}
.card-list h2{margin:0 0 8px;font-size:18px;border:0;padding:0}
.card-list p{margin:0 0 6px;color:var(--muted);font-size:15px}
footer.site-footer{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:14px}
footer.site-footer a{color:var(--muted)}
footer.site-footer .wrap{display:flex;gap:16px;flex-wrap:wrap;max-width:1080px}
/* Code samples are wider than a phone screen; let them scroll inside their own
   box instead of pushing the whole page sideways. */
pre{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
@media(max-width:640px){h1{font-size:24px}.site-nav{gap:12px;font-size:14px}pre{font-size:13px}}