- Replace emoji icons (📘🐦💼💬) with official SVG logos
- Update Facebook, Twitter/X, LinkedIn, and LINE icons
- Add aria-label accessibility attributes
- Apply to header top bar and footer sections
- Update Contact Us page with SVG icons
Icons used:
- Facebook: Official 'f' logo
- Twitter/X: X logo
- LinkedIn: 'in' logo
- LINE: LINE bubble logo
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