# ==============================================
# robots.txt - 仅允许 Google / Bing / DuckDuckGo
# ==============================================

# 1. 全局规则：禁止所有爬虫
User-agent: *
Disallow: /

# 2. 放行 Google
User-agent: Googlebot
Allow: /

# 3. 放行 Bing
User-agent: bingbot
Allow: /

# 4. 放行 DuckDuckGo
User-agent: DuckDuckBot
Allow: /

# 5. 屏蔽 AI 训练爬虫（防止内容被大模型抓取）
User-agent: GPTBot
Disallow: /

User-agent: ChatGPT-User
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: anthropic-ai
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: PerplexityBot
Disallow: /

User-agent: Bytespider
Disallow: /