.section-header.zlab-nav-managed {transition:transform .22s ease,visibility .22s;top:0;}
.section-header.zlab-nav-managed.zlab-nav-collapsed {transform:translateY(calc(-100% - 8px));visibility:hidden;pointer-events:none;}
.zlab-nav-logo {position:fixed;top:max(10px,env(safe-area-inset-top));left:50%;transform:translateX(-50%);z-index:45;display:flex;align-items:center;justify-content:center;width:144px;min-height:52px;padding:10px 12px;border:1px solid #dce2d8;border-radius:14px;background:rgba(255,255,255,.96);box-shadow:0 5px 22px #183b351a;cursor:pointer;color:#183b35;}
.zlab-nav-logo[hidden] {display:none;}
.zlab-nav-logo img {display:block;max-width:120px;max-height:35px;width:auto;height:auto;object-fit:contain;}
.zlab-nav-logo:focus-visible {outline:3px solid #597742;outline-offset:3px;}
@media(prefers-reduced-motion:reduce){.section-header.zlab-nav-managed {transition:none;}}