/* Prototype-only chrome. Never part of a proposed design. */
#proto-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 8px 16px;
  background: #0a0a0b;
  border-bottom: 1px solid #ffffff14;
  font: 400 12px/1.4 system-ui, sans-serif;
  color: #8b8b90;
}
.pb-group { display: flex; align-items: center; gap: 8px; }
.pb-label { text-transform: uppercase; letter-spacing: .09em; font-size: 10px; }
.pb-chips { display: flex; gap: 4px; flex-wrap: wrap; }
.pb-chip {
  background: #17171a; border: 1px solid #ffffff1a; color: #b9b9bd;
  border-radius: 6px; padding: 4px 9px; font: inherit; cursor: pointer;
}
.pb-chip.on { background: #9b1c00; border-color: #c33a17; color: #fff; }
.pb-chip.off { opacity: .3; cursor: not-allowed; }
.pb-home { margin-left: auto; color: #8b8b90; text-decoration: none; }
.pb-home:hover { color: #fff; }