Responsive Landing Page & Form Optimization

My current landing page does its job, but it still feels cluttered and inconsistent. I want it to look polished enough to convert visitors into buyers, load fast on every device, and follow modern HTML 5 / CSS 3 best practices.

Here is what I need done right away:
• Review and refine the visual layer—images, typography, spacing, and overall layout—so the page looks crisp, trustworthy, and geared toward selling.
• Re-organize the underlying HTML and CSS, removing redundancy and bringing the codebase in line with current standards for maintainability and performance.
• Make the entire page fully responsive; it must read perfectly on phones, tablets, and desktops.
• Build a separate registration page with a clean, professional form that submits correctly (front-end validation included) and blends seamlessly with the refreshed design.

Speed matters: I’d like to see first results as soon as possible, with a quick turnaround to final delivery once we iterate on any feedback.

If you are comfortable tuning both design and code and can jump on this ASAP, let’s talk.
Check the wirefram of the landingpage here: https://wireframe.cc/03kWfC