:root{
  --primary:#0F172A; --secondary:#334155; --accent:#0369A1; --accent-dark:#075985;
  --accent-light:#38BDF8; --bg:#F8FAFC; --fg:#020617; --border:#E2E8F0;
  --white:#FFFFFF; --gray:#64748B; --whatsapp:#25D366; --maxw:880px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"Open Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--fg);background:var(--white);line-height:1.7;font-size:17px;}
h1,h2,h3,.logo{font-family:"Poppins",sans-serif;line-height:1.2;}
a{color:var(--accent);text-decoration:none;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* Header */
header{position:sticky;top:0;z-index:100;background:rgba(15,23,42,0.97);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,0.08);}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1140px;margin:0 auto;padding:0 24px;}
.logo{font-size:23px;font-weight:800;color:var(--white);letter-spacing:-0.5px;}
.logo span{color:var(--accent-light);}
.btn{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-weight:600;font-size:15px;border-radius:10px;padding:12px 22px;border:none;font-family:inherit;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;}
.btn-wa{background:var(--whatsapp);color:var(--white);box-shadow:0 8px 22px rgba(37,211,102,0.30);}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(37,211,102,0.40);}
.btn svg{width:19px;height:19px;}

/* Breadcrumb */
.crumb{background:var(--bg);border-bottom:1px solid var(--border);font-size:14px;color:var(--gray);}
.crumb .wrap{padding-top:14px;padding-bottom:14px;}
.crumb a{color:var(--gray);font-weight:600;}
.crumb a:hover{color:var(--accent);}

/* Hero */
.phero{background:radial-gradient(1000px 500px at 75% -20%, #1E293B 0%, var(--primary) 60%);color:var(--white);padding:64px 0 60px;}
.phero .eyebrow{display:inline-block;font-weight:700;font-size:13px;letter-spacing:1px;text-transform:uppercase;color:var(--accent-light);background:rgba(56,189,248,0.14);padding:6px 14px;border-radius:20px;margin-bottom:18px;}
.phero h1{font-size:40px;font-weight:800;margin-bottom:18px;letter-spacing:-0.5px;}
.phero p{font-size:19px;color:#CBD5E1;max-width:680px;margin-bottom:28px;}

/* Content */
article{padding:60px 0;}
article h2{font-size:28px;color:var(--primary);margin:40px 0 14px;}
article h2:first-child{margin-top:0;}
article h3{font-size:20px;color:var(--primary);margin:26px 0 8px;}
article p{margin-bottom:16px;color:var(--secondary);}
article ul{margin:0 0 18px 22px;color:var(--secondary);}
article li{margin-bottom:8px;}
article strong{color:var(--primary);}
.lead-p{font-size:19px;color:var(--secondary);}

/* Feature checklist */
.checklist{list-style:none;margin-left:0;}
.checklist li{position:relative;padding-left:34px;margin-bottom:12px;}
.checklist li::before{content:"";position:absolute;left:0;top:3px;width:22px;height:22px;border-radius:50%;background:#E0F2FE;}
.checklist li::after{content:"";position:absolute;left:7px;top:9px;width:8px;height:4px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg);}

/* FAQ */
.faq{border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden;background:var(--white);}
.faq summary{cursor:pointer;padding:18px 22px;font-family:"Poppins";font-weight:600;color:var(--primary);font-size:17px;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";font-size:22px;color:var(--accent);}
.faq[open] summary::after{content:"–";}
.faq .faq-body{padding:0 22px 18px;color:var(--secondary);}

/* CTA band */
.cta-band{background:radial-gradient(900px 450px at 50% -40%, #1E293B 0%, var(--primary) 60%);color:var(--white);text-align:center;padding:64px 0;}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:12px;color:var(--white);}
.cta-band p{color:#CBD5E1;font-size:18px;max-width:540px;margin:0 auto 26px;}

/* Footer */
footer{background:#0B1220;color:#94A3B8;padding:40px 0;font-size:14px;}
.foot-grid{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;max-width:1140px;margin:0 auto;padding:0 24px;}
footer .logo{font-size:20px;}
footer a{color:#CBD5E1;}

/* Floating WhatsApp */
.wa-float{position:fixed;right:22px;bottom:22px;width:58px;height:58px;border-radius:50%;background:var(--whatsapp);display:flex;align-items:center;justify-content:center;box-shadow:0 10px 28px rgba(37,211,102,0.45);z-index:200;transition:transform .15s ease;}
.wa-float:hover{transform:scale(1.08);}
.wa-float svg{width:32px;height:32px;color:#fff;}

@media (max-width:640px){
  .phero h1{font-size:30px;}
  article h2{font-size:24px;}
  body{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important;}}