:root{
  --bg:#0b1024;
  --g:#3dffc2;
  --p:#b56bff;
  --ink:#eef7ff;
  --muted:#a9b8d4;
  --line:rgba(181,107,255,.28);
  --max:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--bg)}
body{
  font-family:"Segoe UI","Microsoft YaHei",sans-serif;
  color:var(--ink);line-height:1.7;
  background:linear-gradient(180deg,#08101f 0%,#1a1540 38%,#0d2a32 72%,#08101f 100%);
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:80;background:#08101f;border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;letter-spacing:.16em;font-size:12px;color:var(--g)}
.orb{width:22px;height:22px;border-radius:50%;background:var(--p)}
.nav{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.nav a[aria-current="page"]{color:var(--g)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:42px;padding:0 16px;border:1px solid var(--g);
  background:transparent;color:var(--g);font-size:13px;font-weight:800;
}
.btn-fill{background:var(--p);border-color:var(--p);color:#fff}
.kicker{display:block;font-size:11px;letter-spacing:.2em;color:var(--g);margin-bottom:8px;font-weight:800}
.section-head{margin-bottom:20px;text-align:center}
.section-head h2{font-size:clamp(22px,3vw,32px);margin-bottom:8px}
.section-head p{color:var(--muted)}
.footer{padding:40px 0 20px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr .9fr;gap:20px}
.footer h3,.footer h4{margin-bottom:10px;color:var(--g);font-size:15px}
.footer p,.footer a,.footer li{color:var(--muted);font-size:14px}
.footer ul{display:grid;gap:6px}
.copyright{margin-top:20px;padding-top:12px;border-top:1px solid var(--line);font-size:12px}
img[data-src]{min-height:80px;background:#15203a}
.below-fold{content-visibility:auto;contain-intrinsic-size:auto 420px}
@media(max-width:720px){.nav{display:none}.footer-grid{grid-template-columns:1fr}}