:root{--bg:#020817;--bg2:#071026;--line:rgba(148,163,184,.18);--text:#E6EDF7;--muted:#94A3B8;
--blue:#3B82F6;--cyan:#22D3EE;--card:rgba(255,255,255,.035)}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:radial-gradient(1200px 600px at 12% -10%,rgba(59,130,246,.16),transparent 60%),
radial-gradient(900px 500px at 88% 0%,rgba(34,211,238,.12),transparent 55%),var(--bg);
color:var(--text);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:100%;max-width:980px;margin:0 auto;padding:0 22px}
header.nav{border-bottom:1px solid var(--line);backdrop-filter:blur(8px);background:rgba(2,8,23,.72);position:sticky;top:0;z-index:9}
header.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;letter-spacing:.3px}
.brand img{width:24px;height:24px;display:block}
.brand small{color:var(--muted);font-weight:500;letter-spacing:2px;font-size:10px}
nav.links{display:flex;gap:16px;flex-wrap:wrap;font-size:13.5px}
nav.links a{color:var(--muted)}
nav.links a:hover{color:var(--cyan)}
nav.links a.on{color:var(--text)}
main{flex:1;padding:44px 0 60px}
h1{font-size:clamp(26px,4.4vw,38px);line-height:1.25;margin:0 0 12px;letter-spacing:-.4px}
h2{font-size:19px;margin:36px 0 14px;letter-spacing:-.2px}
p.lead{color:var(--muted);font-size:16.5px;margin:0 0 8px;max-width:70ch}
.tag{display:inline-block;font-size:11.5px;letter-spacing:2px;color:var(--cyan);border:1px solid var(--line);
border-radius:999px;padding:4px 12px;margin-bottom:18px;text-transform:uppercase}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px}
.card h3{margin:0 0 8px;font-size:15.5px}
.card p{margin:0;color:var(--muted);font-size:14px}
.card .k{color:var(--text);font-weight:600}
.note{border-left:2px solid var(--blue);background:rgba(59,130,246,.07);padding:12px 16px;border-radius:0 10px 10px 0;
color:var(--muted);font-size:13.5px;margin:20px 0}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
code{background:rgba(148,163,184,.14);border-radius:5px;padding:1px 6px;font-size:13px}
pre{background:#040B1C;border:1px solid var(--line);border-radius:12px;padding:14px 16px;overflow:auto;font-size:13px;color:#D6E4FF}
table{width:100%;border-collapse:collapse;margin-top:10px;font-size:13.5px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:12.5px;letter-spacing:.4px}
ul.plain{color:var(--muted);padding-left:20px;margin:10px 0}
ul.plain li{margin:6px 0}
.cta{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--blue),var(--cyan));
color:#04121F;font-weight:700;border-radius:10px;padding:11px 20px;margin-top:20px;font-size:14.5px}
.cta:hover{text-decoration:none;filter:brightness(1.06)}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:12.5px;padding:20px 0}
footer .wrap{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:999px;padding:4px 11px;font-size:12.5px;color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--muted);display:inline-block}
.dot.ok{background:#22C55E}.dot.wait{background:#F59E0B}
@media(max-width:600px){header.nav .wrap{height:auto;padding:10px 22px;flex-direction:column;align-items:flex-start;gap:8px}}