Day 4 — Added white background for reading

Added white reading backdrop with adjustable opacity slider for blog post pages.

改动

  • 新增 src/components/ReadingBackdrop.astro — 白色文章阅读背景 + 可调节透明度滑块
  • 修改 src/pages/blog/[category]/[slug].astro — 将 <article> 包裹在 <ReadingBackdrop> 中
  • 滑块位于右下角，透明度自动保存到 localStorage，范围 0~100%，默认 92%
92%