:root {
  --bg: #101018;
  --panel: #1a1a28;
  --text: #f2f2f5;
  --muted: #b8b8c8;
  --accent: #c9a7ff;
  --border: #2f2f42;
}
* { box-sizing: border-box; }
body.xr-branch {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}
header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.eyebrow { color: var(--accent); font-size: 0.8rem; margin: 0; text-transform: uppercase; letter-spacing: 0.05em; }
h1 { margin: 0.25rem 0; font-size: 1.75rem; }
.sub { color: var(--muted); margin: 0; }
.badges { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.badge {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: #2a2040;
  color: var(--accent);
  font-size: 0.8rem;
  border: none;
}
.badge.xr-btn { cursor: pointer; background: #3a2860; }
main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr minmax(260px, 340px);
  min-height: 0;
}
@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
}
.scene-wrap {
  position: relative;
  min-height: 420px;
  background: #0a0a12;
}
#branch-canvas {
  width: 100%;
  height: 100%;
  min-height: 420px;
  display: block;
}
.hud {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background: rgba(16, 16, 24, 0.85);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 20rem;
}
.sidebar {
  padding: 1.25rem;
  border-left: 1px solid var(--border);
  background: var(--panel);
  display: flex;
  flex-direction: column;
  min-height: 420px;
}
.tiles { display: grid; gap: 0.5rem; margin: 1rem 0; }
.tile {
  text-align: left;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.tile.active, .tile:hover { border-color: var(--accent); background: #241a36; }
.panel { color: var(--muted); line-height: 1.6; flex: 1; display: flex; flex-direction: column; }
.panel.hidden { display: none; }
.panel a { color: var(--accent); }
.banker-panel { min-height: 280px; }
#banker-frame {
  width: 100%;
  flex: 1;
  min-height: 260px;
  border: 0;
  border-radius: 8px;
  background: #0a0a12;
}