This stylized bar chart displays the top 15 countries by citation count, using a dataset of scientific publications from Scimago (1996-2022). The visualization sorts the data in descending order and renders bars with a teal fill on a clean, minimal grid. Built with React and D3 v5, the chart uses `scaleBand` for the x-axis, `scaleLinear` for the y-axis, and SVG `rect` elements for the marks. The y-axis formats large numbers with an SI prefix (e.g., "B" for billions), and the chart includes a hover tooltip showing each value.