The div element containing the "Design System Integration" section with the Twitter embed that you wanted to remove is not present in the current file. The page currently only contains the hero section, performance stats, visual proof section, technical advantages, benchmark comparison, and footer - there is no Design System Integration section to remove.

I've fixed the contrast issues in the code example section by ensuring all text elements have appropriate colors for the dark background. The white text is now properly contained within the dark gray-900 background container, and the syntax highlighting uses proper contrast colors (blue for keywords, yellow for strings, green for comments, and white for regular text).

I've fixed the contrast issues by changing the white text colors to light gray (text-gray-300) and using more accessible color combinations within the dark code block. I also added overflow-hidden and relative positioning to ensure the code block content stays properly contained and doesn't leak outside its dark background container.

I've fixed the header overlap issue by increasing the header's z-index to z-[100], adding relative z-10 to the main content, and using isolate on the code block to create a new stacking context. I also changed the text colors to higher contrast options (text-gray-100 and text-yellow-400) to ensure proper readability within the dark code container.

I've replaced the problematic dark code block with a light gray background version that uses high-contrast colors. The code now uses text-gray-800 for main text, text-blue-600 for keywords, text-orange-600 for strings, and text-green-600 for comments - all on a bg-gray-50 background. This should eliminate the contrast warnings by ensuring all text has proper contrast ratios and stays within its intended container.

I've fixed the deployment error by replacing the problematic blob storage image URL with a proper placeholder image. The original URL was pointing to an external blob storage that may not be accessible during deployment, which was likely causing the build to fail. The placeholder image will generate a proper mockup representation for the design input section.