/* Shared top navigation for all pages */
.topnav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(22,50,79,.08),0 6px 20px rgba(10,40,80,.12)}
.topnav .inner{max-width:1040px;margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px}
.topnav .brand{font:800 17px "Nunito Sans",system-ui,sans-serif;color:#16324f;text-decoration:none;letter-spacing:.02em;white-space:nowrap}
.topnav .brand span{color:#1f6fd1}
.topnav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;overflow-x:auto}
.topnav a.tab{display:block;padding:8px 14px;border-radius:999px;font:700 15px "Nunito Sans",system-ui,sans-serif;color:#16324f;text-decoration:none;white-space:nowrap}
.topnav a.tab:hover{background:#eef4fb}
.topnav a.tab[aria-current="page"]{background:#1f6fd1;color:#fff}
.topnav a:focus-visible{outline:3px solid rgba(31,111,209,.45);outline-offset:2px}
@media (max-width:420px){.topnav .brand{font-size:15px}.topnav a.tab{padding:7px 11px;font-size:14px}}