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The header no longer forces a 1,600 px layout: it wraps on tablets and narrow desktops (all nine KPIs now fit at 1,600 px, one was clipped before), and on short screens (max-height 560 px, i.e. phones in landscape) it collapses to one row with a scrolling KPI strip. There the detail, event log and legend move into a side sheet (Info button, opens by itself when a station is tapped), so the drawing gets the full height. The drawing pans and zooms by viewBox, so the sim coordinates are untouched: pinch and drag on touch, wheel and drag with a mouse, plus zoom buttons and +/-/0 keys. A drag or pinch never selects the station under the finger. Uses 100dvh and disables iOS landscape text inflation. Upright phones get a hint to turn sideways. Checked in Chrome device emulation at 667x375, 740x360, 844x390, 932x430, 1024x768, 1180x820, 1366x1024, 1258x800, 1600x900, 1920x1080 (no horizontal overflow, zoom controls clear of every station) with real touch input (tap, tab switching, pinch, drag) and a 10x sim run without errors.