update links styles

[akellbl4]

• move link style to global
• make hovers a bit darker on light theme and lighther on dark theme

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b93fc48) 61.52% compared to head (13c2e4b) 61.52%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1687   +/-   ##
=======================================
  Coverage   61.52%   61.52%           
=======================================
  Files         133      133           
  Lines        3002     3002           
  Branches      715      715           
=======================================
  Hits         1847     1847           
  Misses       1151     1151           
  Partials        4        4           

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[github-actions]

size-limit report 📦

Path	Size
public/embed.mjs	2.03 KB (0%)
public/remark.mjs	73.09 KB (0%)
public/remark.css	8.24 KB (+0.12% 🔺)
public/last-comments.mjs	35.63 KB (0%)
public/last-comments.css	3.75 KB (+0.74% 🔺)
public/deleteme.mjs	12.06 KB (0%)
public/counter.mjs	749 B (0%)