* fix: document 782px WordPress mobile admin breakpoint in media query
Adds an inline comment explaining that 782px is the WordPress mobile
admin breakpoint (wp-admin responsive threshold), addressing the
maintainability feedback from Gemini in PR #68.
Closes#69
* fix: add empty line before CSS comment to satisfy comment-empty-line-before rule
CodeFactor flagged missing empty line before the breakpoint comment (comment-empty-line-before).
Also simplifies comment text per Gemini Code Assist suggestion (removes redundant parenthetical).
Fixes CodeFactor FAILURE and Codacy ACTION_REQUIRED on PR #87.