Zoomed-in views of three representative subregions (corresponding to Fields A, B, and C in Figure 8) showing H I self-absorption filaments extracted with the RHT analysis (in grayscale) overlaid with plane-of-sky magnetic-field orientations derived from stellar polarization (red segments) and positioned along the filaments using spatial sampling without a fixed grid. The filamentary structures closely follow the polarization segments that trace the projected magnetic-field orientation.