Vertical 9:16 Halloween retail promo poster, flat vector wit

Vertical 9:16 Halloween retail promo poster, flat vector with soft 3D accents. [Colors] Midnight violet (#2B1054) to plum (#5C2A7A) starfield, pumpkin orange (#F97316) brush bands, cream text (#FFF1D6), acid-green icon accents. [Layout] A stacked headline occupies the top quarter with a small round "Trick or Treat" badge; three horizontal offer bands run down the center, each with a purple tab label sitting above it; an illustrated graveyard strip closes the frame above a thin contact bar. [Typography] Bold condensed poster sans for "HALLOWEEN" in white, a heavy orange headline for the main hook, white extra-bold band headings, condensed sans for supporting copy, small letterspaced caps for the contact line. [Subject] Glowing jack-o'-lanterns cluster at the bottom left, a black cat beside a gravestone at the bottom right, bats and wrapped candy orbit the headline, blurred haunted-house silhouettes sit low on the horizon. [Lighting & Mood] Night glow with a soft vignette, promotional and punchy. [Details] Star speckles, dotted divider lines, torn brush edges on the orange bands, offers "15% off storewide", "Top up 200, get 50 free", "Six 25-value vouchers", all stacked with tier labels "Tier one", "Tier two", "Tier three".