A minimalist, high-quality logo mark of the Cyrillic letter "Э" (reversed C shape with three horizontal bars) composed entirely of horizontal parallel lines on a clean white background. The design follows a gradient density concept: the top lines are thin (1.5pt) and widely spaced in bright cyan color (#00A8CC), gradually transitioning through the middle where lines become medium thickness (3pt) in teal-blue, and ending at the bottom where lines are thick (5-6pt), densely packed, and deep graphite color (#2C3E50). All lines are perfectly horizontal, parallel, and geometrically precise with no curves except the natural C-shape contour of the letter. The right side forms a smooth arc, while the left side has three horizontal protrusions forming the characteristic "Э" shape. No textures, no stone, no gradients, no shadows, no 3D effects - pure flat vector-style graphics. Swiss design aesthetic, engineering precision, industrial branding. The letter is centered, large, and clearly readable. Professional logo quality suitable for engraving on metal equipment.
