The next-section accessibility skip link is injected nested inside each
section's last content element (findSectionEndHost in a11y.ts, added for
#4126). The paragraph-layout rule in getParagraphLayoutStyles() targets
`div:not(:has(*:not(b,a,em,i,strong,u,span)))`, so nesting a <div> made the
enclosing paragraph fail the :has() test and silently lose its line-spacing,
word/letter-spacing, text-indent, and hyphenation overrides — but only for the
last paragraph of every section, and only in <div>-based EPUBs (common in
Chinese-source books). <p>-based books were unaffected because the bare `p`
clause matches regardless of children.
Create the next-section skip link as a <span> instead. <span> is in the
selector's allow-list, so the enclosing paragraph keeps matching. The link is
still position:absolute (an out-of-flow 1x1px box) and focusable, so layout and
NVDA focus behavior are unchanged.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Huang Xin
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