body{font-family:Arial,sans-serif;margin:0;background:#f5f7fb;color:#333}
header{background:#fff;padding:20px;text-align:center;border-bottom:1px solid #ddd}
nav{background:#0b4ea2;padding:12px;text-align:center}
nav a{color:#fff;text-decoration:none;margin:0 12px;padding:8px}
nav a.active{background:#fff;color:#0b4ea2;border-radius:4px;font-weight:bold}
.container{max-width:1200px;margin:auto;padding:30px 20px}
.card{background:#fff;padding:20px;margin:15px 0;border-radius:8px}
footer{background:#222;color:#fff;text-align:center;padding:20px}