:root{font-family:Roboto Mono,monospace;background-color:#111827;color:#e5e7eb;--transition-duration: .3s;--hover-scale: 1.05}body{margin:0}button{transition:transform var(--transition-duration),box-shadow var(--transition-duration)}button:hover{transform:scale(var(--hover-scale));box-shadow:0 4px 8px #0003}.knob{transition:transform var(--transition-duration)}.knob:active{transform:scale(.95)}.step-button{transition:background-color var(--transition-duration),transform var(--transition-duration)}.step-button:hover{background-color:#374151;transform:scale(var(--hover-scale))}