:root{
  --bg: #ffffff;
  --text:#0b1220;
  --muted:#6b7280;
  --accent:#16a34a;
  --accent-2:#0ea5e9;
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  display:flex;align-items:center;justify-content:center;min-height:100vh;padding:32px;
}

.wrap{max-width:900px;width:100%;text-align:center}
.card{background:#fff;border-radius:20px;padding:48px 56px;border:1px solid rgba(10,10,10,0.05);box-shadow:0 10px 30px rgba(13,17,23,0.06)}

h1{font-size:clamp(2rem,6vw,3.5rem);line-height:1.1;font-weight:800;margin-bottom:12px;letter-spacing:-0.5px}
p.lead{font-size:clamp(1rem,2.5vw,1.25rem);color:var(--muted);margin:0 auto 28px;max-width:600px}

.examples{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;margin:24px 0}
.box{flex:1 1 auto;min-width:260px;max-width:360px;padding:18px;border-radius:12px;border:1px solid rgba(11,17,32,0.06);background:linear-gradient(180deg, #fff, #fafafa);}
.bad{color:#b91c1c;font-weight:700;font-size:1.1rem}
.good{color:var(--accent);font-weight:700;font-size:1.1rem}
.sub{color:var(--muted);font-size:0.9rem;margin-top:8px;line-height:1.5}

.why{margin:40px auto;max-width:720px;color:var(--muted);font-size:1rem;line-height:1.7;border-top:1px solid rgba(0,0,0,0.05);padding-top:28px;text-align:left}
.why strong{color:var(--text)}

.btn{padding:14px 18px;border-radius:12px;border:0;font-weight:700;cursor:pointer;flex:1 1 auto;max-width:260px;transition:all .2s}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:white}
.btn.primary:hover{opacity:0.9}
.btn.ghost{background:transparent;border:1px solid rgba(11,17,32,0.08);color:var(--text)}
.btn.ghost:hover{background:rgba(0,0,0,0.03)}

footer{margin-top:28px;color:var(--muted);font-size:0.8rem;text-align:center;line-height:1.5}

@media (max-width:600px){
  body{padding:16px}
  .card{padding:32px 24px}
  .examples{flex-direction:column;align-items:center}
  .box{width:100%;max-width:100%}
  .btn{width:100%}
  .why{text-align:center}
}

/* Dark mode automático */
@media (prefers-color-scheme: dark){
:root{--bg:#0b1220;--text:#ffffff;--muted:#9ca3af;--accent:#22c55e;--accent-2:#0ea5e9}
.card{background:#121827;border:1px solid rgba(255,255,255,0.05)}
.box{background:linear-gradient(180deg, #1f2937, #111827);border:1px solid rgba(255,255,255,0.05)}
}