A professional, high-quality 8K resolution horizontal wide commercial event stage backdrop banner for a corporate luxury celebration. Premium red-and-gold festive marketing theme with an absolute clean graphic layout, completely free of any blurred cross-hatch watermark lines, repeating website text overlays, placeholder badge frames, or digital signatures.

**Main Subjects & Premium Corporate Typography:**
- Front and center background: A luxury corporate headline displaying "Gala Dinner CHỦ ĐỀ CỦA BẠN" in a premium combination of fluent golden script calligraphy overlapping massive, heavy 3D extruded polished gold block characters with high-gloss reflective surfaces.
- Centered underneath the text layers: Clean white modern sans-serif subtext reading "HÀ NỘI, 25/1/2026".

**Foreground Golden City Skyline & Glitter Waves:**
- Placed in the lower center foreground: A brilliant, glowing golden city skyline silhouette (đường chân trời thành phố mạ vàng) showing clean lines of modern skyscrapers and architectural structures lit from behind.
- The base of the city merges into wide, grandly flowing horizontal waves of liquid gold (sóng vàng kim sa) mixed with thousands of shimmering, glowing gold glitter particles, sparkling stardust dots, and rich ambient lighting.

**Background Concept & Symmetrical Diagonal Frames:**
- The base background canvas is a deep, vibrant crimson red color gradient bar with soft festive bokeh light circles.
- Framing both the left and right margins symmetrically, pointing diagonally down towards the center: A modern corporate frame layout consisting of layered, polished 3D metallic bars in alternating high-gloss gold and chrome silver finishes (thanh khối 3D mạ vàng và mạ bạc).

**Art Style & Quality:**
An exceptional combination of high-end 3D corporate event staging render, prestigious entertainment marketing presentation, and sharp horizontal typography layout. Intense color contrast utilizing regal crimson reds, high-polished metallic golds, and radiant stardust highlights, ultra-sharp text contours, clean layout, 8k resolution, aspect ratio 4:3.