*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#050607;
  --panel:#0d1116;
  --panel-2:#101722;
  --line:#263345;
  --line-soft:rgba(255,255,255,0.1);
  --text:#f6f3ed;
  --muted:#a9b3c2;
  --gold:#f5a524;
  --cyan:#41c8e8;
  --green:#53d18b;
  --body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"SFMono-Regular","Menlo","Consolas","Liberation Mono",monospace;
}
html{overflow-x:hidden}
body{font-family:var(--body);background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.shell{width:min(1060px,calc(100% - 40px));margin:0 auto}
.nav{border-bottom:1px solid var(--line-soft);background:#070a0f}
.nav-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.12rem}
.brand img{width:32px;height:32px;border-radius:7px}
.brand span{color:var(--gold)}
.nav-links{display:flex;align-items:center;gap:16px;color:var(--muted);font-size:0.92rem}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:8px;background:var(--gold);color:#171006;font-weight:800}
header{padding:70px 0 30px;border-bottom:1px solid rgba(255,255,255,0.06)}
.crumb{font-size:0.86rem;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--cyan)}
.label{font-family:var(--mono);font-size:0.78rem;color:var(--gold);font-weight:800;letter-spacing:0;margin-bottom:12px;text-transform:uppercase}
h1{font-size:clamp(2rem,5vw,4rem);line-height:1.08;margin-bottom:18px;letter-spacing:0}
.lead{font-size:1.08rem;color:var(--muted);max-width:820px}
.quick{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0 0}
.quick div,.card,.query,.faq,.note{border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.quick div{padding:18px}
.quick b{display:block;color:var(--gold);font-family:var(--mono);font-size:0.78rem;margin-bottom:6px}
.quick span{color:var(--muted);font-size:0.93rem}
main{padding:34px 0 48px}
section{padding:18px 0}
h2{font-size:1.5rem;margin-bottom:14px;letter-spacing:0}
h3{font-size:1.05rem;margin-bottom:8px}
p,li{color:var(--muted);font-size:0.96rem}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card,.faq,.note{padding:22px}
.card b{display:block;color:var(--text);margin-bottom:8px}
.query-list{display:grid;gap:10px}
.query{padding:14px 16px;color:#e6fbff;font-size:0.94rem;background:#070b11}
.table{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--panel)}
.row{display:grid;grid-template-columns:0.85fr 1.15fr;border-bottom:1px solid var(--line-soft)}
.row:last-child{border-bottom:none}
.row div{padding:14px 16px;color:var(--muted)}
.row div:first-child{background:var(--panel-2);color:var(--text);font-weight:700}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.code{display:block;font-family:var(--mono);white-space:pre;overflow:auto;background:#070b11;border:1px solid rgba(65,200,232,0.22);border-radius:8px;color:#e6fbff;padding:14px;margin-top:10px;font-size:0.86rem}
.links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.links a{border:1px solid var(--line);border-radius:8px;padding:10px 12px;color:var(--muted);background:#070b11}
footer{border-top:1px solid var(--line-soft);padding:30px 0;color:var(--muted)}
@media(max-width:820px){
  .nav-inner{align-items:flex-start;flex-direction:column;padding:14px 0}
  .nav-links{flex-wrap:wrap}
  .quick,.grid,.cards,.faq-grid,.row{grid-template-columns:1fr}
  header{padding:48px 0 24px}
}
@media print{
  body{background:#fff;color:#111}
  .nav,.btn,footer{display:none}
  .shell{width:100%;margin:0}
  header,main{padding:0}
  .quick div,.card,.query,.faq,.note,.table{background:#fff;color:#111;border-color:#ccc}
  p,li,.lead,.quick span,.row div,.links a{color:#333}
}