replace the fixed large-breakpoint column split with an auto-fit grid so
memory, network, and disk modules display side by side at typical widths
and collapse to one column only on very narrow containers.
tighten module spacing and card chrome (gap, padding, radius) to increase
information density, and add container-query refinements to keep usage and
process blocks full width while improving narrow-width behavior for memory,
network, and disk sublayouts.
yinjianm
5118e75efe