Replace “On the right, a low hearth fireplace” with “a large central hearth fireplace as the primary focal point,” and change “wide-shot” to “medium-wide composition centered on the hearth.” Add “the round reading table pushed to the left edge” and “firelight prominently illuminating the cushions and woven blankets.”

Replace “warm light across plush cushions” with “low, restrained ember light leaving most of the library in deep shadow,” and change “inviting” to “quietly ominous and mysterious.” Reduce “single lit candle” to “one nearly extinguished candle,” while replacing “cool blue moonlight streams” with “a narrow shaft of stark blue moonlight cuts through the darkness.”

Keep the core phrase “hidden library inside the hollow trunk of a giant ancient tree,” then swap the location details in each version: replace “irregular oval opening in the canopy” with “a narrow root-level doorway,” “a stained-glass branch window,” or “a circular opening high in the trunk.” You can also replace “a closed book” with “an open spellbook,” “a stack of weathered maps,” or “a glowing botanical journal” while retaining the same “warm candle and ember glow mixed with cool blue moonlight” for visual continuity.