# Native measurement: Version focus ring and caption

Measured on `st-043` at 1920×1080. Accent threshold: maximum per-channel distance 32, allowing JPEG edge noise. Ring widths are the contiguous thresholded runs at its centre column, not assumed CSS widths. Caption ink counts describe the native/prototype glyphs; they are not a claim of equal typeface or weight.

| Surface | Focus ring bounding box (px) | Centre-column runs (y start, y end, thickness px) | Caption white-ink pixels | Label local bounding box (px) |
|---|---|---|---:|---|
| prototype | [284, 542, 380, 638] | [[542, 545, 3], [635, 638, 3]] | 794 | [1, 3, 108, 23] |
| native | [280, 543, 376, 639] | [[543, 547, 4], [635, 639, 4]] | 571 | [1, 3, 88, 22] |

## Header measurements

White-ink bounds use channel minimum 210 and channel spread ≤20. Regions exclude metadata and poster art. Frozen line counts are visibly inspected; native widths, constraints, ellipsis and requested weight come from TextLayoutResult. Font differences are recorded, not compensated.

| Frame | Frozen/native lines | Frozen ink box (px) | Native ink box (px) | Native line widths / constraint (px) | Native ellipsis |
|---|---:|---|---|---|---|
| st-043 | 1 / 1 | [104, 260, 369, 327] | [100, 261, 324, 328] | [229.34064] / 1060 | [False] |
| st-066 | 2 / 1 | [97, 260, 1088, 417] | [97, 261, 1076, 345] | [984.21747] / 1060 | [False] |