Panel a: HH212 inner region viewed by ALMA Cycle 4. The SiO jet at |V_LSR−V_sys| = 5−10 km s^-1 (blue and red contours), C¹⁷O rotating envelope at |V_LSR−V_sys| = 1.5 km s^-1 (pink and turquoise), and cavity walls in C³⁴S at |V_LSR−V_sys| ≤ 0.6 km s^-1 (green, with parabolic fits in dashed magenta) are shown. First contour and step are 6σ and 18σ for SiO, 6σ and 6σ for C¹⁷O, 4σ and 4σ for C³⁴S, where σ is the rms noise level. The source is shown as a white cross and beam sizes are in the bottom left corner. Panel b: zoom-in on blue and red SO₂ at ± 2 km s^-1 shows a slow outflow rotating in the same sense as the C¹⁷O disk. First contour and step are 7σ. White segments show the positions of PV cuts in Fig 2. Green squares show inner SiO knots imaged by Lee et al. (2017a); the yellow ellipse marks the centrifugal barrier radius at r ~ 45 au and the height of the COM-rich disk atmosphere at z ± 20 au (Lee et al. 2017c). Images are rotated such that the vertical axis corresponds to the jet axis at PA = 22°.