Create a minimalist geometric logo of the letter "A" for a tech YouTube channel called "AI Office". The letter "A" should be formed from abstract overlapping triangular shapes that subtly suggest an upward arrow (symbolizing growth and progress). Use a dark navy blue background (#0A192F) and a neon cyan to light blue gradient (#64FFDA) for the letter. Clean sharp lines, subtle glow effect, flat vector style, no text, professional corporate tech aesthetic, centered composition, square format, high resolution.
