/* Struktur dasar header + navbar (cadangan bila style lain gagal dimuat) */
body{font-family:Arial,sans-serif;margin:0}
header{display:flex;align-items:center;justify-content:center;min-height:150px;background:#FFE600}
.logo{width:200px;max-width:80%;height:auto;display:block}
nav{background:#1E3A8A;padding:10px 20px}
nav ul{list-style:none;display:flex;flex-wrap:wrap;align-items:center;margin:0;padding:0}
nav ul li{position:relative;margin-right:20px}
nav ul li a{color:#fff;text-decoration:none;font-weight:bold;padding:8px;display:block}
nav ul li ul{position:absolute;top:100%;left:0;background:#1E3A8A;display:none;flex-direction:column;min-width:200px;z-index:10}
nav ul li:hover>ul{display:flex}
.content{width:90%;margin:20px auto;padding:20px;box-sizing:border-box}