A · Overview-first
Tradeoff: best for orienting newcomers; the primary action sits below the fold.
Primary action
Feature one
Feature two
Feature three
Annotation — assumption: the review question is about first-run orientation, so content density is low here. [Change if the real question is task speed.]
B · Task-first
Tradeoff: one dominant path, minimal distraction; secondary functions are tucked into the top-right menu.
Start
Open question: should the task run inside this screen or navigate to a dedicated flow?
Annotation — behavior: the primary CTA is the only color-anchor; everything else recedes on purpose. [Structure question: does making one path dominate hurt discovery?]
C · Split-pane
Tradeoff: strongest for working against live content (two things at once); most complex at mobile width.
List / index
KPI
Detail / editor
Annotation: master-detail pattern. What happens when the panel is the whole screen on mobile?
Annotation — responsive: on ≤700px the split collapses to stacked panels; verify the hierarchy survives.
Review question: [the structural decision this exploration exists to settle]. Pick a direction, then hand the winner to
html-plan / html-prototype as appropriate.