css and html skilled landing page

been attempting this challenge for like the past 12 hours and feeling like crap. i've exhausted all methods i could think of to fix the site for the day, was hoping someone here could roast it and provide me with some pointers to try tmr.

Issues/ queries i have:

(1) that pesky hero-picture was responsible for eating up at least 8 hours of my time, and i still have no idea how to fix it. one moment it works, one moment it does not at tablet. for desktop, i have literally zero idea how to fix it beyond like 1400px

https://ibb.co/RhYKprX

https://ibb.co/fXVWXL3

(2) i have no idea why .dark::after needed an extra z-index

(3) no idea, why font-size clamp wasnt working, will look into it tmr. Thank you so much!