body{font-family: Arial, Helvetica, sans-serif; margin:0; padding:0; background:#fff; color:#111;}
header{background:#f5f7fb; padding:18px; text-align:center; border-bottom:1px solid #e2e6ef;}
.logo{width:220px; display:block; margin:0 auto 8px;}
nav{display:flex; justify-content:center; gap:18px; margin-bottom:12px;}
nav a{text-decoration:none; color:#0b4f8a; font-weight:600;}
.container{max-width:980px; margin:28px auto; padding:0 18px;}
.hero{background:#0b4f8a; color:#fff; padding:36px 18px; text-align:center; border-radius:8px;}
.btn{display:inline-block; background:#1fbf4a; color:#fff; padding:10px 16px; border-radius:8px; text-decoration:none; font-weight:700;}
.card{border:1px solid #e6e9f2; padding:18px; border-radius:8px; margin-bottom:16px;}
.tips{font-weight:800; font-size:1.1em; letter-spacing:0.6px;}
.footer{padding:18px; text-align:center; font-size:0.9em; color:#666; margin-top:28px;}
.whatsapp-float{position:fixed; right:18px; bottom:18px; background:#25D366; color:#fff; border-radius:50%; width:60px; height:60px; display:flex; align-items:center; justify-content:center; font-size:28px; text-decoration:none;}