玻璃面板破裂系统故障

Sombre sci-fi system failure, 1600 ms. A large glass panel cracking: one sharp 2 kHz shatter transient followed by a long descending 700 Hz to 90 Hz metallic groan that fades out over a second, with a soft electrical flicker underneath. Final and cold, not violent. Dry and close, no reverb hall, no orchestral strings, no funeral bell, no cinematic drums.