\begin{document}$ g_{D^*D\rho} $\end{document} and \begin{document}$ g_{B^*B\rho} $\end{document} in light-cone sum rules, including one-loop QCD corrections of leading power with \begin{document}$ \rho $\end{document} meson distribution amplitudes. We further compute subleading-power corrections from two-particle and three-particle higher-twist contributions at leading order up to twist-4 accuracy. The next-to-leading order corrections to the leading power contribution numerically offset the subleading-power corrections to a certain extent, and our numerical results are consistent with those of previous studies on sum rules. A comparison between our results and existing model-dependent estimations is also made."> <i>D</i>*<i>Dρ</i> and <i>B</i>*<i>Bρ</i> strong couplings in light-cone sum rules -
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