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* fix(docs): stop the sidebar drifting when page content resizes The sidebar used fumadocs' `sticky` positioning, and a sticky box is bottom-limited by its containing block. #nd-docs-layout ends ~660px above the document bottom because the site footer is a sibling of the layout rather than a grid child, so across the whole footer the sidebar was pushed progressively upward. Any content-height change while the reader sat in that zone then moved it: expanding one FAQ row shifted the sidebar 16.8px at a fixed scroll offset, and collapsing it shifted it back. Pin the sidebar and its divider to the viewport instead. A fixed box ignores both the container's end and the document height, so neither the drift nor the jump can happen. The grid columns are explicit (`0px 300px 1fr 268px 0px`), so taking the placeholder out of flow leaves its track intact and the content column does not move. The footer is already opaque and now out-stacks both, so it slides over them at the end of the page. Measured with Playwright before and after: sidebar delta on expand/collapse 16.8px/-16.8px -> 0px/0px, content column left and width unchanged, and the sidebar holds top:92px at the page bottom on the docs, API-reference, academy and integrations layouts. Mobile is untouched (the rule is desktop-only). * refactor(docs): drop dead grid placement, move footer stacking to the component Review follow-ups. The divider's `grid-row`/`grid-column` stopped doing anything the moment it became `position: fixed` — a fixed box is out of grid layout entirely — so they and the comment explaining the grid span were describing positioning that no longer happens. Verified inert: the divider still computes to left 300px / width 1px / z-index 21 without them. The footer's stacking context also belongs on the footer, not in a global rule matching every desktop `footer` element, so it moves to the component as `relative z-[22]` with the reason in its TSDoc.