.nb-grid { display: grid; gap: 0 16px; }
@media (min-width: 760px) { .nb-grid { grid-template-columns: 1fr 1fr; } }
.nb .mono { font-family: ui-monospace, Menlo, Consolas, monospace; }
.nb-cb { display: inline-block; width: 72px; padding: 4px 8px; margin-left: 6px; }