:root{
  --blue:#1E88E5;
  --dark:#0B3B6F;
  --muted:#6B7280;
  --bg:#f7fbff;
  --white:#ffffff;
}
*{box-sizing:border-box;font-family:Inter, ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial; margin:0; padding:0}
body{background:linear-gradient(180deg,var(--bg),#ffffff);color:var(--dark);-webkit-font-smoothing:antialiased}
.container{max-width:920px;margin:40px auto;padding:24px}
.hero{text-align:center;padding:28px;background:rgba(255,255,255,0.9);border-radius:12px;box-shadow:0 8px 30px rgba(17,24,39,0.06)}
.logo{display:flex;justify-content:center;margin-bottom:8px}
.brand{font-size:36px;font-weight:700;color:var(--dark);margin-top:8px}
.tagline{font-size:18px;color:var(--muted);margin-top:8px}
.desc{margin-top:14px;color:var(--muted);font-size:15px;max-width:720px;margin-left:auto;margin-right:auto}
.signup{margin-top:18px;display:flex;gap:10px;justify-content:center;align-items:center;flex-wrap:wrap}
.signup input{padding:12px 14px;border-radius:10px;border:1px solid rgba(14,40,75,0.08);min-width:260px;font-size:15px}
.btn{background:var(--blue);color:white;padding:12px 16px;border-radius:10px;border:none;font-weight:600;cursor:pointer}
.note{font-size:13px;color:var(--muted);margin-top:8px}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:22px}
.feature{background:white;padding:14px;border-radius:10px;box-shadow:0 6px 18px rgba(17,24,39,0.04)}
.feature h3{color:var(--dark);margin-bottom:8px}
.footer{text-align:center;margin-top:22px;color:var(--muted);font-size:13px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:520px){.brand{font-size:28px}.container{padding:12px;margin:18px}}