.topnav{position:sticky;top:0;z-index:1000;background:rgba(10,10,15,.9);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.1)}
.topnav-inner{max-width:1600px;margin:0 auto;padding:14px 40px;position:relative;display:flex;align-items:center;min-height:48px}
.topnav .brand{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;text-decoration:none}
.topnav .brand .brand-text{font-family:'IBM Plex Sans',sans-serif;font-weight:600;letter-spacing:.5px;color:#d4af37}
.topnav .nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.topnav .navlink{color:#a1a1aa;text-decoration:none;font-size:14px;padding:6px 10px;border-radius:8px;transition:color .2s,background .2s}
.topnav .navlink:hover{color:#ffffff;background:rgba(255,255,255,.04)}