01 // DUAL_MARGIN_DIFF [CHAPTER 01 · P.12]
架构突破：正文结论与眉批思维链双栏分离渲染
Deep Seek 网页端将模型内省草稿（reasoning_content）与正式定稿解耦，如同古籍善本的「朱笔眉批」与「正文铅字」，推理脉络一目了然。
--- a/web_folio/flat_chat_stream.ts
+++ b/web_folio/deepseek_marginalia_stream.ts
- appendSingleTextBlock(chunk.delta); // 思考与结论混杂
- hideIntermediateVerification();
+ appendMarginaliaReasoning(chunk.reasoning_content, { collapsible: true });
+ appendVerifiedMainText(chunk.content, { folioBookmark: true });
