Summary: 鉅亨網 adds Market Value Heatmap and Hot ETFs

Why It Matters: This change gives users new ways to see stock and ETF performance.

What Changed:

• Added a "Market Value Heatmap" section.
• Added a "Hot ETFs" section with a detailed table.
• Added a "Concept Stock Ranking" section.
• Added an "Investment Theme Ranking" section.
• Removed a large amount of old content, including navigation links, news articles, and event listings.