Generate an isometric vector illustration in SVG format depicting a compact urban block. Build the scene on an isometric grid with 30-degree axes, where all shapes snap to grid lines to preserve the projection. Use modular buildings with simple prisms and rectangular facades, a straight street, trees as stylized polygons, and street furniture such as benches and signs. Apply flat fills from a cohesive 6–8 color palette and use lighter and darker variants to suggest light direction without raster shading; avoid gradients except where necessary to create facet shading on roof faces. Enforce consistent stroke behavior: strokes aligned with shape edges, uniform width (1.5–2 px), butt line caps, miter joins, or omit strokes for flat fills to emphasize vector clarity. Organize content into layers: background sky, midground buildings, foreground street elements, and annotations. Output should be valid, scalable SVG with viewBox 0 0 1200 900, preserveAspectRatio xMidYMid meet, and include accessible title/desc. Provide IDs for key groups to enable scripting and styling.

The image shows an isometric view of a city street with buildings, trees, street poles, street lights, sign boards, benches, grass, and clouds in the sky.