Luxury Champagne Serum Mega-Sale Promo

[Format] Professional e-commerce product main image, square 1:1, luxurious champagne-silk beauty promo. [Colors] Warm champagne-beige flowing silk backdrop (#e9d5b8 range); rose-gold bottle tones; black headline text; burgundy promo strips; golden price numerals; No frame border. [Layout] Hero serum bottle on the left; black corner tag top-left and small gold roundel top-right; headline block upper-right; a rounded outlined card below-right holding three mini bottles; a thin event-time line beneath; bottom band splits into a black final-price zone and a gold membership note. [Subject] A tall faceted glass serum bottle in rose-gold tones with a metallic cap and water droplets on the surface, beside three small matching travel bottles inside a rounded gold outline. [Headline] Black pill top-left reads "Store's #1 Bestseller" in white; big black bold text "Buy 35ml, Get 56ml Total" with subtitle "Firming Anti-Wrinkle, Revives Youthful Skin"; burgundy strip shows "$50 off orders over $500"; outlined card titled "Free 3 x 7ml Serums with Order"; small line "Event: Nov 11, 2025 0:00 - 23:59"; bottom-left "Final Price $339" in gold on black; bottom-right "Join Membership for More Perks". [Badges] Black corner tag, gold roundel, outlined gift card, black price bar. [Mood] Opulent, festive and premium, made for a mega-sale campaign.