:root{--red:#d71920;--dark:#0f0f0f;--light:#f5f5f5}
*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:#111;color:#eee}
header{background:#000;padding:15px 0;position:sticky;top:0}
.container{width:min(1200px,92%);margin:auto}
nav a{color:white;text-decoration:none;margin:0 10px;font-weight:bold}
.hero{padding:80px 20px;text-align:center;background:linear-gradient(180deg,#000,#222)}
.logo{max-width:380px;width:100%;border-radius:12px}
.btn{display:inline-block;padding:14px 22px;background:var(--red);color:white;text-decoration:none;border-radius:6px;margin:5px}
section{padding:50px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{background:#1d1d1d;padding:20px;border-left:4px solid var(--red);border-radius:8px}
footer{background:#000;padding:30px;text-align:center}
input,textarea{width:100%;padding:12px;margin:8px 0;background:#222;color:#fff;border:1px solid #444}
.whatsapp{position:fixed;right:20px;bottom:20px;background:#25D366;color:#fff;padding:14px 18px;border-radius:50px;text-decoration:none}