body{color:#333;background:#f4f4f4;margin:0;padding:0;font-family:Arial,Helvetica,sans-serif}header{color:#fff;text-align:center;background:#222;padding:20px 15px}header h1{margin:0;font-size:1.8rem}main{background:#fff;border-radius:8px;max-width:900px;margin:20px auto;padding:20px;box-shadow:0 2px 8px #0000001a}h2{color:#222;margin-top:0}h3{color:#444;margin-top:25px}p{line-height:1.6}.alerta{background:#fff3cd;border-left:4px solid #ffce00;border-radius:4px;margin:15px 0;padding:12px 15px;font-size:.95rem;line-height:1.25rem}.lista-simples{padding-left:18px}.lista-simples li{margin-bottom:5px}.passos{counter-reset:passo;padding-left:0;list-style:none}.passos li{counter-increment:passo;margin-bottom:18px;padding-left:40px;position:relative}.passos li:before{content:counter(passo);color:#fff;background:#222;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:.9rem;font-weight:700;display:flex;position:absolute;top:0;left:0}.video-container{border-radius:8px;height:0;margin:20px 0;padding-bottom:56.25%;position:relative;overflow:hidden;box-shadow:0 2px 8px #00000026}.video-container iframe{border:0;width:100%;height:100%;position:absolute;top:0;left:0}footer{text-align:center;color:#777;padding:15px;font-size:.85rem}@media (max-width:600px){header h1{font-size:1.4rem}main{margin:10px;padding:15px}}