.topbar{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,transform .35s var(--ease)}
.topbar.is-solid{background:var(--bg)}
.topbar.is-hidden{transform:translateY(-100%)}
.topbar-inner{height:64px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.05rem;letter-spacing:.12em}
.logo img{height:22px;width:auto;filter:brightness(0) invert(1)}