:root{
  --bg:#ffffff;
  --fg:#111827;
  --accent:#0A84FF;
  --muted:#6B7280;
  --surface:#F2F2F7;
  --card-bg: #ffffff;
  --radius: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{background:var(--bg);color:var(--fg);margin:0;padding:0}

header.site-header{border-bottom:1px solid #eee;padding:20px 28px}
.container{max-width:1100px;margin:0 auto;padding:20px}
.hero{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:36px 0}
.hero-text h1{margin:0 0 8px 0;font-size:32px}
.hero .sub{margin:0 0 16px 0;color:var(--muted)}
.ctas .btn{display:inline-block;padding:10px 16px;border-radius:10px;margin-right:12px;text-decoration:none}
.btn.primary{background:var(--accent);color:#fff}
.btn{border:1px solid rgba(0,0,0,0.06);background:transparent;color:var(--fg)}

.hero-preview .card{background:var(--card-bg);border-radius:12px;padding:18px;width:280px;box-shadow:0 6px 18px rgba(16,24,40,0.06)}

.trust-strip ul{display:flex;gap:16px;padding:12px 0;margin:0;list-style:none}
.trust-strip li{background:var(--surface);padding:8px 12px;border-radius:10px}

.preview,.next-steps{padding:28px 0}

.card{background:var(--card-bg);border-radius:var(--radius);padding:18px;margin:12px 0;box-shadow:0 6px 18px rgba(16,24,40,0.04)}

main{padding:24px 28px}
footer{padding:24px;border-top:1px solid #eee;color:var(--muted);font-size:13px;text-align:center}

/* responsive */
@media (max-width:800px){
  .hero{flex-direction:column;align-items:flex-start}
  .hero-preview{width:100%}
}

/* dark mode */
@media (prefers-color-scheme: dark){
  :root{--bg:#0b1220;--fg:#e6eef8;--muted:#9fb0c7;--surface:#071028;--card-bg:#071028}
  a{color:var(--accent)}
}

/* Animations */
.reveal{opacity:0;transform:translateY(10px);transition:opacity 420ms ease,var(--transform, transform) 420ms ease}
.reveal.animated{opacity:1;transform:translateY(0)}

@keyframes floaty{0%{transform:translateY(0)}50%{transform:translateY(-6px)}100%{transform:translateY(0)}}
.floaty{animation:floaty 4s ease-in-out infinite}

.btn{transition:transform 180ms ease, box-shadow 180ms ease}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(10,132,255,0.18)}

/* Stagger helper */
.reveal[data-delay="1"]{transition-delay:80ms}
.reveal[data-delay="2"]{transition-delay:160ms}
.reveal[data-delay="3"]{transition-delay:240ms}

/* reveal-on-scroll fallback spacing */
.reveal-on-scroll{opacity:0;transform:translateY(12px);transition:opacity 420ms ease, transform 420ms ease}
.reveal-on-scroll.visible{opacity:1;transform:translateY(0)}