:root{--bg:#071528;--bg2:#0d1833;--card:#14213f;--line:#26375a;--text:#f4f7ff;--muted:#aebbd1;--blue:#17b9ed;--purple:#7967ff;--cyan:#28d4f2}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Microsoft YaHei",system-ui,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.nav{height:72px;position:sticky;top:0;z-index:30;background:#091326e8;border-bottom:1px solid #1b2b49;backdrop-filter:blur(18px);display:flex;align-items:center;padding:0 max(24px,calc((100vw - 1200px)/2));gap:32px}.logo{display:flex;align-items:center;gap:12px;white-space:nowrap}.logo-mark{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,#a43cff,#6a68ff);display:grid;place-items:center;font-size:29px;box-shadow:0 0 24px #8854ff7a}.logo strong,.logo small{display:block}.logo strong{font-size:21px}.logo small{font-size:12px;color:#b4c0d4}.nav 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@media(max-width:650px){.hero{padding:78px 18px 55px}.hero h1{font-size:38px}.lead{font-size:17px}.flow-card{padding:18px}.flow{grid-template-columns:1fr;gap:12px}.line{display:none}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.btn{padding:0 14px;font-size:14px}.section{padding:58px 0}.section-head{text-align:left;margin-bottom:27px}.steps article{padding:20px}.faq details p{padding:17px 24px}.footer{flex-direction:column;align-items:flex-start}.footer p{margin:0}.logo strong{font-size:18px}.logo-mark{width:40px;height:40px}.nav{height:64px}.nav nav{top:64px}.intro{font-size:14px}}