--- Prompt: Top-down fantasy map of a harmonious metropolis built around a massive central lake filled not with water but with a perfectly still, mirror-like pool of condensed balance-essence — half radiant white-gold light and half deep shadow-silver, swirling in an eternal, slow-motion yin-yang rotation, with zero turbulence, perfectly concentric ripples that cancel each other out, and a surface that reflects both sky and underworld simultaneously. The city structure is balanced yet non-ring-like — districts radiate outward in mirrored pairs, with every eastern quarter having a precise western counterpart, but laid out in interlocking spirals rather than uniform rings, streets that curve in symmetrical arcs, and open plazas positioned at exact harmonic intervals. Architecture is magic-infused and low-tech: paired obelisks—one smooth white stone, one rough black obsidian—standing at every intersection, floating plazas that hover at equal heights above and below ground level, arched bridges made of alternating translucent and opaque crystal that cross over still canals, spiral amphitheaters with dual stages facing each other, and shallow channels carved into the stone that carry dual-flowing essence—one side glowing gold, the other deep violet—branching from the central lake in perfectly mirrored patterns into every district. No metal machinery, no industry — everything is shaped by hand-carved stone, woven fiber, and equilibrium-channeling magic, with the balance-lake as Mehr sehen