/* Business Center: interactive 4-floor building + panel crossfade */
.floor-group { cursor: pointer; transition: transform .35s cubic-bezier(.22,1,.36,1); transform-origin: center; transform-box: fill-box; }
.floor-group.active { transform: translateY(-4px); }
.floor-top  { transition: fill .3s ease; }
.floor-side { transition: fill .3s ease; }
.floor-win  { transition: fill .25s ease, opacity .25s ease; }
.floor-badge-bg { transition: stroke .25s ease; }
.floor-badge-tx { transition: fill .25s ease; }

.panel { transition: opacity .3s ease, transform .3s ease; }
.panel.out { opacity: 0; transform: translateX(20px); }
.panel.in  { opacity: 1; transform: translateX(0); }