Mechanical Calculator

🎹 Tactile 3D keycaps — chunky, isometric-tilted keys with realistic depth, bevels, and a satisfying press-down animation on every click

🖥️ Fused LCD display — glowing teal digital screen seamlessly attached to the keypad, showing live expression + result

🎨 Color-coded controls — soft gray numbers, warm orange operators, and a standout green equals key for quick visual scanning

📱 Fully responsive — scales smoothly from mobile to desktop with a fixed single-page layout, no scrolling needed