Thư viện prompt AI miễn phí cho người Việt

Create a 4:5 vertical high-end desk lamp promotional poster. Core composition is "Light Beam Letter Slot". A minimalist metal desk lamp is located at the bottom left. Thin stem, matte deep red semi-cylindrical shade, realistic power cord extending naturally along the surface. Lamp head emits a warm white light cone towards upper right, with clear but not overly sharp boundaries. Four dark indigo matte thin boards stand vertically in the center with consistent spacing. Boards themselves have no printed text; only when the light beam passes through precise cutouts on the four boards does the projected light on the rear warm-grey wall spell out the complete word "BEAM". Each letter is formed by light, not like ordinary glowing fonts stuck on the wall. Light beam shows slight width changes and real soft edges after passing through different cutouts. Controlled highlights on board edges, clear projection direction retained on surface. Besides title, add small info "ARC LAMP / LIGHT SHAPED BY FORM" at bottom right only. No icons, parameter cards, or decorative lines. Colors strictly limited to dark indigo, matte red, warm grey, and warm white light. Use quiet indoor night photography texture. Lamp material realistic. Optical relationships must hold: source, cutout, projection on same straight line. Simple composition with spatial depth. Full opaque rectangular background covering canvas, no transparent pixels, no black corners, no alpha mask, no edge feathering. No neon signs, stage smoke, cyberpunk, people, existing brand logos, or watermarks.