% Tail threshold main figure.
% If you compile from a paper subdirectory, adjust the image path prefix as needed.
\begin{figure}[t]
    \centering
    \includegraphics[width=\linewidth]{Evaluation/tail_threshold/final/tail_stress_main_figure.png}
    \caption{
        Tail stress testing reveals rare-event fragility.
        As the tail threshold becomes stricter, tail fidelity drops while the head proxy remains stable.
        The degradation is driven primarily by tail set consistency and tail mass similarity rather than by tail concentration consistency.
    }
    \label{fig:tail-stress-main}
\end{figure}