/* Estilo moderno e esportivo */
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#0b1220;color:#e6edf3}
header{display:flex;justify-content:space-between;align-items:center;padding:20px;background:#020617;border-bottom:1px solid #1f2937}
header h1{margin:0;color:#22c55e}
nav a{color:#e6edf3;margin-left:20px;text-decoration:none}
.hero{padding:70px 20px;text-align:center;background:linear-gradient(135deg,#020617,#0f172a)}
.container{max-width:1100px;margin:auto;padding:30px}
.card{background:#111827;padding:25px;border-radius:12px;margin-bottom:20px;box-shadow:0 10px 20px rgba(0,0,0,.3)}
footer{text-align:center;padding:20px;border-top:1px solid #1f2937}