STATION ·06
WHAT THIS TESTS
Deep DOM + live mutations + fixed-positioned header. The picker must walk ancestors. The observer must re-apply our class without thrashing. Outlines must position correctly over fixed elements.
Eight-level nesting
Level 1 · region
Level 2 · district
Level 3 · sector
Level 4 · block
Level 5 · zone
Level 6 · cell
Level 7 · node
Level 8 · leaf
node-payload-0x4f7c