/* Aurora Admin Tree 样式 — 对齐 组件2.txt Tree 规范 */
.aa-tree { min-width: 240px; border: 1px solid #E8ECF1; border-radius: 8px; padding: 4px; background: #fff; }
.aa-tree-node {
  display: flex; align-items: center; gap: 4px; height: 32px; border-radius: 4px;
  cursor: pointer; user-select: none; font-size: 14px; color: #262626; padding-right: 8px;
}
.aa-tree-node:hover { background: #F5F7FA; }
.aa-tree-node.is-selected { background: #F0F5FF; color: #2F54EB; }
.aa-tree-arrow {
  display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px;
  font-size: 12px; color: #8C8C8C; transition: transform .15s; flex-shrink: 0;
}
.aa-tree-arrow.is-open { transform: rotate(90deg); }
.aa-tree-arrow-placeholder { width: 16px; flex-shrink: 0; }
.aa-tree-check { width: 14px; height: 14px; flex-shrink: 0; cursor: pointer; }
.aa-tree-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }