A dark, mystical logo for 'Q_4K,' designed with an ominous, arcane flair. The text features bold, jagged lettering, crackling with an ethereal blue and silver glow. The underscore (_) is styled like a serpentine rune, coiling beneath the letters with shadowy wisps trailing off. Surrounding the logo is a faint, spectral aura with hints of ghostly blue smoke, dotted with glimmering stars like a night sky filled with sorcery. The backdrop includes a subtle, circular sigil marked with esoteric symbols and ancient glyphs, radiating a cold, eerie light, giving the entire logo a sense of powerful, otherworldly magic