:root{
  --primary:#0b6fb2;
  --accent:#0f9d58;
  --bg:#f7f9fb;
  --text:#222;
  --muted:#666;
  --card:#fff;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;color:var(--text);background:var(--bg);line-height:1.5}
.container{max-width:1000px;margin:0 auto;padding:20px}
.site-header{background:#fff;border-bottom:1px solid #e6eef6}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.brand{margin:12px 0;font-size:1.2rem;color:var(--primary)}
nav a{margin-left:16px;color:var(--muted);text-decoration:none;font-weight:600}
.hero{background:linear-gradient(90deg, rgba(11,111,178,0.95), rgba(15,157,88,0.9));color:#fff;padding:48px 0;border-radius:4px;margin:20px 0}
.hero h2{margin:0 0 10px;font-size:1.6rem}
.hero p{margin:0 0 16px;opacity:0.95}
.btn{display:inline-block;background:#fff;color:var(--primary);padding:10px 16px;border-radius:6px;text-decoration:none;font-weight:700}
.solutions h3, .benefits h3, .contact h3{margin-top:8px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}
.card{background:var(--card);padding:16px;border-radius:8px;box-shadow:0 1px 4px rgba(10,10,10,0.06)}
.card h4{margin:0 0 8px;color:var(--primary)}
.benefits ul{padding-left:18px;color:var(--muted)}
.contact form{max-width:620px;margin-top:12px;display:grid;gap:8px}
.contact input,.contact textarea{padding:10px;border:1px solid #d6e6f2;border-radius:6px}
.contact .contact-info{margin-top:12px;color:var(--muted)}
.site-footer{background:#fff;border-top:1px solid #e6eef6;padding:12px 0;margin-top:20px}
@media (max-width:600px){
  .site-header .container{flex-direction:column;align-items:flex-start}
  nav{margin-top:8px}
}
.btn-whatsapp{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:#25D366;
  color:#fff;
  text-decoration:none;
  padding:10px 16px;
  border-radius:10px;
  font-weight:700;
  font-family:inherit;
  box-shadow:0 2px 6px rgba(0,0,0,0.12);
  transition:transform .12s ease, box-shadow .12s ease, opacity .12s ease;
  line-height:1;
}

.btn-whatsapp img{
  width:20px;
  height:20px;
  object-fit:contain;
  filter:brightness(0) invert(1);
  display:block;
}

.btn-whatsapp:active{ transform:translateY(1px); }
.btn-whatsapp:hover{ box-shadow:0 4px 10px rgba(0,0,0,0.14); opacity:0.98; }

@media (max-width:420px){
  .btn-whatsapp{ padding:8px 12px; gap:8px; font-size:14px; border-radius:8px; }
  .btn-whatsapp img{ width:18px; height:18px; }
}