Disentangling the primary drivers of the signal. Similar to Figure 2, but in each panel the sample is subdivided by projected distance to the nearest filament into three bins: D_fil < 0.5 h⁻¹ Mpc (blue), 0.5 ≤ D_fil < 1.0 h⁻¹ Mpc (orange), and 1.0 ≤ D_fil < 10.0 h⁻¹ Mpc (green); the legend reports the number of systems in each bin. The gray dashed line marks the isotropic expectation (〈θ〉 = 45^∘). Points show the binned mean values of the angle θ between the satellite orbital-normal vector ﹩{\hat{{\boldsymbol{n}}}}_{{\rm{orb}}}﹩ and the projected filament direction ﹩{\hat{{\boldsymbol{e}}}}_{{\rm{fil}}}﹩, and error bars indicate the 1σ uncertainty on the mean estimated from bootstrap resampling.