.topbar .brand,
footer .brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
}

.topbar .brand::before,
footer .brand::before{
  content:"";
  display:block;
  width:30px;
  height:30px;
  flex:0 0 30px;
  background:url("images/logo-observatory.svg") center/contain no-repeat;
}

.topbar .brand{
  letter-spacing:.06em;
}

.topbar .brand::before{
  transition:transform .25s ease;
}

.topbar .brand:hover::before{
  transform:rotate(8deg);
}

footer .brand::before{
  width:36px;
  height:36px;
  flex-basis:36px;
}

.nav-toggle{
  display:none;
}

@media(max-width:760px){
  body.nav-open{
    overflow:hidden;
  }

  .topbar{
    position:relative;
    z-index:100;
  }

  .topbar .wrap{
    min-height:58px;
    padding-top:8px;
    padding-bottom:8px;
    flex-direction:row;
    align-items:center;
    flex-wrap:nowrap;
    gap:16px;
  }

  .topbar .brand{
    position:relative;
    z-index:2;
    font-size:15px;
  }

  .topbar .brand::before{
    width:32px;
    height:32px;
    flex-basis:32px;
  }

  .nav-toggle{
    display:flex;
    width:42px;
    height:42px;
    margin-left:auto;
    padding:10px 9px;
    flex:0 0 42px;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    color:var(--paper);
    background:transparent;
    border:1px solid rgba(255,255,255,.24);
    border-radius:2px;
    cursor:pointer;
  }

  .nav-toggle:hover{
    border-color:rgba(255,255,255,.5);
  }

  .nav-toggle-bar{
    display:block;
    width:100%;
    height:2px;
    background:currentColor;
    transform-origin:center;
    transition:transform .2s,opacity .2s;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){
    opacity:0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }

  .topbar .wrap > nav.site-navigation{
    display:flex;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    max-width:none;
    max-height:calc(100vh - 58px);
    margin:0;
    padding:10px 28px 18px;
    flex-direction:column;
    align-items:stretch;
    flex-wrap:nowrap;
    gap:0;
    overflow-y:auto;
    background:var(--ink-deep);
    border-top:1px solid rgba(255,255,255,.1);
    box-shadow:0 18px 34px rgba(5,16,27,.32);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .2s,transform .2s,visibility .2s;
    -webkit-overflow-scrolling:touch;
  }

  .topbar .wrap > nav.site-navigation.is-open{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }

  .topbar .wrap > nav.site-navigation > a,
  .topbar .wrap > nav.site-navigation .hasmenu > .navtop{
    display:block;
    width:100%;
    margin:0;
    padding:11px 0;
    color:#D7E0E8;
    font-size:15px;
    border-bottom:1px solid rgba(255,255,255,.09);
  }

  .topbar .wrap > nav.site-navigation .hasmenu{
    display:block;
    width:100%;
    position:static;
  }

  .topbar .wrap > nav.site-navigation .hasmenu > .navtop{
    position:relative;
    padding-right:28px;
  }

  .topbar .wrap > nav.site-navigation .hasmenu > .navtop .caret{
    display:inline-block;
    position:absolute;
    right:2px;
    transition:transform .2s;
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .navtop .caret{
    transform:rotate(180deg);
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown{
    display:block;
    position:static;
    left:auto;
    width:100%;
    min-width:0;
    margin:0;
    padding:4px 0 8px 14px;
    opacity:1;
    visibility:visible;
    transform:none;
    background:rgba(255,255,255,.04);
    border:0;
    box-shadow:none;
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown a{
    display:block;
    margin:0;
    padding:9px 10px;
    color:#B9C6D2;
    white-space:normal;
    border-bottom:1px solid rgba(255,255,255,.07);
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown a:hover,
  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown a:focus-visible{
    color:#fff;
    background:rgba(255,255,255,.06);
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown a:last-child{
    border-bottom:0;
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown a i{
    color:#8FA0AF;
  }

  .topbar .wrap > nav.site-navigation .hasmenu.is-submenu-open > .dropdown a.dd-all{
    color:var(--accent);
    background:rgba(255,255,255,.08);
  }

  .topbar .wrap > nav.site-navigation > a:last-child{
    border-bottom:0;
  }
}

@media(prefers-reduced-motion:reduce){
  .nav-toggle-bar,
  .topbar .wrap > nav.site-navigation{
    transition:none;
  }
}