.shell-topbar{display:flex;align-items:center;flex-wrap:wrap;gap:16px}
.shell-topbar .brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none}
.shell-topbar .brand small{display:block}.shell-nav{display:flex;flex-wrap:wrap;gap:6px}
.shell-nav button{cursor:pointer;min-height:44px}.shell-nav button[hidden]{display:none}
.shell-nav button:focus-visible,a:focus-visible{outline:2px solid currentColor;outline-offset:3px}
#pdm-view{min-width:0}#session-status{font-size:14px}#toast:empty{display:none}
@media(max-width:640px){.shell-topbar{gap:10px}.shell-nav{width:100%;flex-wrap:nowrap;overflow-x:auto}.shell-nav button{flex:none}}