:root{
  --bg:#07111f;
  --bg2:#0d1b2f;
  --card:#ffffff;
  --text:#e8eef8;
  --muted:#a9b7cc;
  --primary:#4f8cff;
  --primary2:#7f5cff;
  --dark:#0f1726;
  --border:rgba(255,255,255,.08);
  --shadow:0 18px 50px rgba(0,0,0,.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,var(--bg),#091527 40%,#0b1220);
  line-height:1.65;
}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(12px);
  background:rgba(7,17,31,.72);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.nav nav{display:flex;gap:18px;flex-wrap:wrap}
.brand{font-weight:800;letter-spacing:.04em}
.hero{padding:72px 0 56px;background:
radial-gradient(circle at top right, rgba(79,140,255,.18), transparent 28%),
radial-gradient(circle at left center, rgba(127,92,255,.16), transparent 30%)}
.hero-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:28px;align-items:center}
.eyebrow{color:#8eb7ff;text-transform:uppercase;letter-spacing:.14em;font-size:.82rem;font-weight:700}
h1,h2,h3{line-height:1.15;margin:0 0 14px}
h1{font-size:clamp(2.3rem,5vw,4.4rem);max-width:11ch}
h1 span{background:linear-gradient(90deg,#8eb7ff,#9e8cff);-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-size:clamp(1.7rem,3vw,2.8rem)}
h3{font-size:1.25rem}
.lead{font-size:1.08rem;color:var(--muted);max-width:62ch}
.hero-actions,.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin:24px 0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 20px;border-radius:14px;font-weight:700;border:1px solid transparent;
  box-shadow:var(--shadow)
}
.btn-primary{background:linear-gradient(90deg,var(--primary),var(--primary2));color:#fff}
.btn-secondary{background:transparent;border-color:rgba(255,255,255,.18);color:#fff}
.hero-card,.card,.cta-box{
  border:1px solid var(--border);box-shadow:var(--shadow)
}
.hero-card{
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.04));
  padding:24px;border-radius:22px
}
.hero-card a{display:block;padding:10px 0;color:#d8e5ff}
.trust-list,.list{padding-left:18px}
.trust-list li,.list li{margin:7px 0;color:var(--muted)}
.section{padding:72px 0}
.section-dark{background:linear-gradient(180deg,#0b1322,#0d1a2d)}
.section-head{margin-bottom:24px}
.grid-3,.grid-2,.footer-grid{
  display:grid;gap:20px
}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:2fr 1fr}
.card{
  background:var(--card);color:#0c1728;border-radius:22px;padding:24px
}
.card p{color:#45576f}
.card-dark{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.03));
  color:#fff
}
.card-dark p{color:#b7c6db}
.cta{padding-bottom:92px}
.cta-box{
  background:linear-gradient(135deg,rgba(79,140,255,.16),rgba(127,92,255,.16));
  border-radius:28px;padding:28px;display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:center
}
.wechat{display:inline-flex;align-items:center;padding:14px 18px;border-radius:14px;background:rgba(255,255,255,.08)}
.site-footer{
  border-top:1px solid var(--border);
  padding:24px 0 36px;color:var(--muted)
}
.site-footer a{display:block;margin:6px 0}
@media (max-width: 900px){
  .hero-grid,.grid-3,.grid-2,.cta-box,.footer-grid{grid-template-columns:1fr}
  h1{max-width:none}
}