:root{
--bg:#0b1220; --panel:#0f182a; --muted:#9CA3AF; --text:#E5E7EB; --brand:#60A5FA; --brand2:#A78BFA; --ok:#34D399;
--radius:16px; --shadow:0 10px 30px rgba(0,0,0,.35); --maxw:1120px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial; background:radial-gradient(1200px 700px at 75% -10%, rgba(96,165,250,.15), transparent 60%), radial-gradient(900px 600px at -10% 10%, rgba(167,139,250,.18), transparent 55%), var(--bg); color:var(--text); -webkit-font-smoothing:antialiased}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
header{position:sticky;top:0;z-index:30; backdrop-filter:saturate(120%) blur(10px); background:linear-gradient(to bottom, rgba(11,18,32,.85), rgba(11,18,32,.55)); border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700}
.logo{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg, var(--brand), var(--brand2));box-shadow:var(--shadow)}
.menu{display:flex;gap:8px;flex-wrap:wrap}
.menu a{padding:10px 14px;border-radius:12px;background:linear-gradient(135deg, rgba(96,165,250,.15), rgba(167,139,250,.15)); border:1px solid rgba(255,255,255,.12)}
.menu a.active{background:linear-gradient(135deg, var(--brand), var(--brand2));color:#0b1220}
main{padding:36px 0}
.hero{padding:72px 0 24px;text-align:center}
.hero h1{font-size:clamp(32px,4vw,48px);line-height:1.05;margin:0 0 12px}
.hero .sub{margin:0 auto;color:var(--muted);max-width:680px;font-size:18px}
.cta-row{display:flex;gap:12px;justify-content:center;margin-top:20px;flex-wrap:wrap}
.cta{display:inline-flex;align-items:center;gap:10px;padding:12px 16px;border-radius:14px;font-weight:600}
.cta.primary{background:linear-gradient(135deg, var(--brand), var(--brand2));color:#0b1220;box-shadow:var(--shadow)}
.cta.secondary{background:rgba(255,255,255,.06);color:var(--text);border:1px solid rgba(255,255,255,.12)}
.section{padding:24px 0}
.card{background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.grid{display:grid;gap:18px}
@media (min-width:900px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.feature{background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0)); border:1px solid rgba(255,255,255,.08); border-radius:var(--radius); padding:16px}
.feature h3{margin:8px 0 6px;font-size:18px}
.feature p{margin:0;color:var(--muted)}
.faq{display:grid;gap:12px}
details{background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:14px 16px}
summary{cursor:pointer;font-weight:600}
summary::marker{color:var(--brand)}
footer{border-top:1px solid rgba(255,255,255,.08);margin-top:32px}
.foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between;padding:18px 0;color:var(--muted);font-size:14px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.kbd{padding:2px 6px;border:1px solid rgba(255,255,255,.18);border-bottom-width:2px;border-radius:8px;background:rgba(255,255,255,.06);font-size:.95em}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:rgba(52,211,153,.12);color:var(--ok);font-weight:700;font-size:12px;border:1px solid rgba(52,211,153,.35)}