Apple Device Email Signature Design

I’m looking for a sleek, professional-looking email signature that renders perfectly on all my Apple hardware—iPhone, iPad, and Mac Mail. The layout must stay crisp on Retina screens, load quickly, and remain fully clickable (phone, email, website links) without breaking when the dark-mode toggle is on.

Because I jump between these three devices every day, I need a single HTML signature file that is:
• Responsive and width-adaptive so the text never wraps awkwardly on smaller screens.
• Built with Apple Mail–friendly coding practices (inline CSS, no unsupported web fonts, minimal external calls).
• Easy for me to drop into Settings on iOS and Preferences on macOS, so please include a brief step-by-step installation note.

Deliverables
1. Final HTML file plus any hosted or embedded image assets optimised for Retina.
2. A screenshot preview recorded on iPhone, iPad, and Mac showing correct rendering.
3. One-page installation guide (PDF or text).

I’ll supply my exact contact details and logo when we start; you handle the layout, polish, and testing. Let me know if you need anything else to get rolling.