:root{
  --max:1120px;
  --text:#0f172a;
  --muted:#94a3b8;
  --bg:#0b1020;
  --card:#0f1426;
  --glass:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.12);
  --brand:#7c3aed;
  --brand-2:#06b6d4;
  --grad: radial-gradient(1200px 600px at 20% -20%, rgba(124,58,237,.35), transparent 60%),
          radial-gradient(1200px 600px at 80% 0%, rgba(6,182,212,.25), transparent 60%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Apple SD Gothic Neo, Pretendard, sans-serif;
  color:#e5e7eb;
  background:var(--bg);
  background-image: var(--grad);
  background-attachment: fixed;
}
.wrap{max-width:var(--max);margin:0 auto;padding:22px}
a{color:#dbeafe}
.muted{color:var(--muted)}
.small{font-size:13px}
.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--border);backdrop-filter: saturate(140%) blur(10px)}
.glass{background:linear-gradient(180deg, rgba(10,14,28,.8), rgba(10,14,28,.6))}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;gap:10px;align-items:center;color:#fff;text-decoration:none;font-weight:700}
.brand-icon{font-size:18px}
.nav a{margin-left:14px;text-decoration:none;color:#e5e7eb;opacity:.9}
.nav .btn{margin-left:14px}
.btn{display:inline-block;padding:10px 14px;border-radius:12px;border:1px solid var(--border);text-decoration:none}
.btn.primary{background:linear-gradient(135deg, var(--brand), var(--brand-2));color:#fff;border-color:transparent;box-shadow:0 10px 25px rgba(124,58,237,.25)}
.btn.ghost{background:transparent;color:#fff}
.hero{display:grid;gap:22px;align-items:center;margin-top:18px}
.hero-card{padding:28px;border:1px solid var(--border);border-radius:18px;background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02))}
.kicker{display:inline-flex;gap:8px;align-items:center;margin-bottom:8px;color:#c7d2fe}
.kicker .dot{width:8px;height:8px;background:var(--brand);border-radius:50%}
.hero h1{font-size:clamp(28px,4.5vw,42px);line-height:1.15;margin:6px 0 10px}
.tagline{opacity:.9}
.hero .cta-row{margin-top:16px;display:flex;gap:12px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.stat{padding:14px;border:1px dashed var(--border);border-radius:14px;background:rgba(255,255,255,.02);text-align:center}
.grid{display:grid;grid-template-columns:2fr 1fr;gap:22px;margin-top:20px}
@media(max-width:960px){.hero{grid-template-columns:1fr}.grid{grid-template-columns:1fr}}
.card{padding:22px;border:1px solid var(--border);border-radius:16px;background:rgba(255,255,255,.04)}
.card h2{margin-top:0;color:#fff}
.note{background:rgba(6,182,212,.08);border:1px solid rgba(6,182,212,.25);padding:14px;border-radius:12px}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;border:1px solid var(--border);margin:4px 6px 0 0}
.toc a{text-decoration:none;color:#cbd5e1}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border:1px solid var(--border);padding:10px;text-align:left}
.site-footer{border-top:1px solid var(--border);padding:30px 0;background:rgba(0,0,0,.2)}
.footer-grid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.brand-mini{font-weight:700;margin-bottom:6px}
.footer-nav a{margin-right:12px;text-decoration:none;color:#cbd5e1}
.floating-cta{
  position:fixed;right:18px;bottom:18px;z-index:60;
  background:linear-gradient(135deg, var(--brand), var(--brand-2));
  color:#fff;text-decoration:none;padding:12px 16px;border-radius:999px;
  box-shadow:0 10px 24px rgba(124,58,237,.35);
}
.faq details{background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:12px;padding:12px 14px}
.faq details+details{margin-top:10px}
.hero-illustration{
  min-height:260px;border-radius:18px;border:1px solid var(--border);
  background:
    radial-gradient(120px 120px at 20% 30%, rgba(124,58,237,.35), transparent 60%),
    radial-gradient(160px 160px at 80% 20%, rgba(6,182,212,.25), transparent 60%),
    radial-gradient(220px 220px at 50% 70%, rgba(255,255,255,.06), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
}