/* mobile */
@media (max-width: 640px) {
    .topbar {
        padding: 12px 0;
        gap: 12px;
    }

    .brand {
        min-width: 0;
        gap: 10px;
    }

    .brand-name span {
        display: none;
    }

    .brand-name strong {
        font-size: 17px;
    }

    .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 12px;
    }

    .mobile-drawer {
        width: min(360px, 92vw);
    }
}