fix(theme/Codeblock): revert the code shadow and enhance the separator line

[SoonIter]

Summary

fix(theme/Codeblock): revert the code shadow

Related Issue

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Copilot]

Pull request overview

This PR reverts the shadow styling on code blocks by changing the --rp-code-block-shadow CSS variable from var(--rp-shadow-1) to none. The changes are applied consistently to both light and dark mode configurations.

Key Changes

• Removed shadow from code blocks in both light and dark mode by setting --rp-code-block-shadow to none
• Adjusted divider color opacity values for better visual consistency

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/core/src/theme/styles/vars/code-vars.css	Removes code block shadow by setting the shadow variable to none in both light and dark mode
packages/core/src/theme/styles/vars/base-vars.css	Adjusts divider color opacity values (increased from 0.2 to 0.25 and 0.1 to 0.12)

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[github-actions]

Rsdoctor Bundle Diff Analysis

⚠️ Note: The latest commit (c03d863a6b) does not have baseline artifacts. Using commit b93fade4d0 for baseline comparison instead. If this seems incorrect, please wait a few minutes and try rerunning the workflow.

Found 3 projects in monorepo, 3 projects with changes.

📊 Quick Summary

Project	Total Size	Change
node	9.2 MB	-104.0 B (-0.0%)
node_md	1.1 MB	-104.0 B (-0.0%)
web	15.0 MB	-50.0 B (-0.0%)

📋 Detailed Reports (Click to expand)

📁 node

Path: website/doc_build/diff-rsdoctor/node/rsdoctor-data.json

📌 Baseline Commit: b93fade4d0 | PR: #2925

Metric	Current	Baseline	Change
📊 Total Size	9.2 MB	9.2 MB	-104.0 B (-0.0%)
📄 JavaScript	0 B	0 B	0
🎨 CSS	0 B	0 B	0
🌐 HTML	9.2 MB	9.2 MB	-104.0 B (-0.0%)
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: node Bundle Diff

📁 node_md

Path: website/doc_build/diff-rsdoctor/node_md/rsdoctor-data.json

📌 Baseline Commit: b93fade4d0 | PR: #2925

Metric	Current	Baseline	Change
📊 Total Size	1.1 MB	1.1 MB	-104.0 B (-0.0%)
📄 JavaScript	0 B	0 B	0
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	1.1 MB	1.1 MB	-104.0 B (-0.0%)

📦 Download Diff Report: node_md Bundle Diff

📁 web

Path: website/doc_build/diff-rsdoctor/web/rsdoctor-data.json

📌 Baseline Commit: b93fade4d0 | PR: #2925

Metric	Current	Baseline	Change
📊 Total Size	15.0 MB	15.0 MB	-50.0 B (-0.0%)
📄 JavaScript	14.4 MB	14.4 MB	-26.0 B (-0.0%)
🎨 CSS	115.4 KB	115.4 KB	-24.0 B (-0.0%)
🌐 HTML	0 B	0 B	0
📁 Other Assets	517.0 KB	517.0 KB	0

📦 Download Diff Report: web Bundle Diff

Generated by Rsdoctor GitHub Action