:root { --primary-blue:#007aff;--whatsapp-green:#25D366;--text-dark:#1d1d1f;--text-light:#515154;--background-white:#ffffff;--border-color:#d2d2d7;--amber-star:#ffc107;} 
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;margin:0;padding:0;background-color:var(--background-white);color:var(--text-dark);line-height:1.8;-webkit-font-smoothing:antialiased;}
.container{max-width:720px;margin:auto;padding:24px;}
h1,h2,h3{line-height:1.3;color:var(--text-dark);max-width:68ch;}
h1{font-size:2.4em;}h2{font-size:1.8em;border-bottom:1px solid var(--border-color);padding-bottom:12px;margin-top:48px;}
.hero{text-align:center;padding:32px 0;}
.hero img{max-width:100%;border-radius:18px;box-shadow:0 8px 25px rgba(0,0,0,0.08);aspect-ratio:16/9;object-fit:cover;}
.hero p{font-size:1.1em;color:var(--text-light);max-width:60ch;margin:16px auto 24px;}
.cta-buttons{display:flex;justify-content:center;gap:16px;margin-top:24px;flex-wrap:wrap;}
.btn{padding:0 24px;min-height:56px;border-radius:14px;text-decoration:none;font-size:1.1em;font-weight:600;display:inline-flex;align-items:center;justify-content:center;transition:opacity .3s;cursor:pointer;border:none;}
.btn-primary{background-color:var(--primary-blue);color:white;}
.btn-wa{background-color:var(--whatsapp-green);color:white;}
.btn:hover{opacity:.85;}
.checklist{background:#f9f9f9;border:1px solid var(--border-color);border-radius:18px;padding:24px;}
.section{margin-top:48px;}
.howto-steps ol{list-style:none;padding-left:0;}
.howto-steps li{background:#f9f9f9;padding:20px;border-radius:14px;margin-bottom:16px;box-shadow:0 4px 12px rgba(0,0,0,0.05);border:1px solid var(--border-color);}
.howto-steps h3{margin-top:0;}
.faq details{border-bottom:1px solid var(--border-color);padding:16px 0;}
.faq summary{font-weight:600;cursor:pointer;position:relative;padding-right:20px;}
.faq summary::after{content:'+';position:absolute;right:0;top:0;}
.faq details[open] summary::after{content:'−';}
footer{text-align:center;margin-top:48px;padding:24px 0;border-top:1px solid var(--border-color);}
footer a{color:var(--primary-blue);text-decoration:none;}