body{font-family:Arial,Helvetica,sans-serif;margin:0;padding:0;background:#fff}
.container{max-width:980px;margin:1.5rem auto;padding:1rem}
.top-nav{background:#f8f9fa;border-bottom:1px solid #e5e5e5;padding:.5rem 1rem;display:flex;align-items:center;justify-content:space-between}
.top-nav .brand a{font-weight:700;text-decoration:none;color:#333}
.top-nav .menu a{margin-left:.75rem;text-decoration:none;color:#333}
.top-nav .menu a.button{padding:.35rem .6rem;background:#007bff;color:#fff;border-radius:4px}
.panel{border:1px solid #e5e5e5;padding:1rem;border-radius:6px;background:#fff}