/* ─── Global Reset & Canvas Styling ─── */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html, body {
            background: #060612;
            overflow: hidden;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            width: 100vw;
            font-family: 'Segoe UI', Arial, sans-serif;
        }
        html.canvas-scroll-mode,
        body.canvas-scroll-mode {
            overflow: auto;
        }
        body.canvas-scroll-mode {
            justify-content: flex-start;
            align-items: flex-start;
            padding: 12px;
            min-height: 100vh;
            min-width: 100vw;
        }
        canvas {
            display: block;
            image-rendering: auto;
            touch-action: none;
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            user-select: none;
            border-radius: 4px;
            box-shadow: 0 0 40px rgba(51,204,255,0.08), 0 0 80px rgba(51,204,255,0.04);
        }