Find the smallest useful card
Collect representative titles and summaries, including the longest ones. Identify where headings, metadata and actions start to lose their relationship.
Try the in-between widths
Choose columns from available space. Rehearse a reading task between device presets and with text enlarged. Preserve the source order as cards reflow.
Share the rule
Record the minimum card width, gap and reading order. Fieldnote makes those decisions visible through three preview widths.