fix: correct analog electronics content and rendering

Clarify device models, worked solutions, prerequisites, and interview scoring.

Regenerate teaching figures from LaTeX, repair circuit labels and curves, and reject missing glyphs.

Correct interactive lab models and input handling, isolate inline SVG IDs, and fix formula overflow and theme rendering.

Author: SamKuler

README.md

@@ -32,7 +32,7 @@ cd analog-electronics-guide
 
 - 30 天冲刺轨：每天 45–60 分钟，合计约 23.4 小时；
 - 七章主教材与一章频域工具：概念、模型、推导、例题、边界与口述；
-- 分层练习、详细解答、70 个高频问答与两套模拟面试；
+- 分层练习、详细解答、70 个高频问题与追问（含 5 个示范回答）及两套模拟面试；
 - 七个交互实验：RC 阶跃、二极管波形、BJT 负载线、晶体管放大器信号链、运放反馈、Bode 稳定性和隔离低压整流滤波；
 - 一页公式表、典型电路速查、术语缩写表和可交互的参数实验。