性能报告（Performance Report）：
├── 总点击次数 (Total Clicks)
├── 总展示次数 (Total Impressions)
├── 平均 CTR (Average CTR)
├── 平均排名 (Average Position)
└── 时间趋势分析

索引报告（Index Coverage）：
├── 有效页面
├── 发现但未索引
├── 被 robots 阻止
└── 手动操作警告

1. Filter condition: keywords ranked 7-20
2. Filter condition: impressions > 100 times/month
3. Sort: descending order by impression volume

Optimization strategy:
- These keywords are "about to" enter the first page
- Optimize content quality and internal links
- Goal: enter the top 3 positions

Identification criteria:
- Ranked 1-5 but CTR < 20%
- Possible reason: Title/Description is not attractive
- Or page type does not match search intent

Optimization direction:
- Optimize Title Tag (more attractive copy)
- Optimize Meta Description (add numbers/call to action)
- Check if Snippet accurately reflects page content

Troubleshooting steps:
1. Is keyword coverage sufficient?
2. Does content quality meet search intent?
3. Are internal links sufficient?
4. Is the page correctly indexed?
5. Do Core Web Vitals meet the standards?

流量获取报告：
├── 按渠道查看有机搜索流量
├── 用户获取campaign表现
└── 归因模型分析

用户行为报告：
├── 页面浏览量 (Pageviews)
├── 平均 engagement time
├── 跳出率 (Bounce Rate)
├── 滚动深度
└── 退出页面分析

转化报告：
├── 目标完成（Goal Completions）
├── 电子商务交易（如适用）
└── 关键事件追踪

Traffic quality indicators:
- Engagement Rate: > 60% is good
- Average Engagement Time: > 1 minute is good
- Bounce Rate: < 40% is good
- Pages/session: > 2.0 is good

Conversion indicators:
- Organic traffic conversion rate
- Organic traffic value
- Average revenue per user (ARPU)

// Recommended SEO related events to track

// Scroll depth tracking
gtag('event', 'scroll_depth', {
  'scroll_depth': '75%',  // 25%, 50%, 75%, 100%
  'page_location': window.location.pathname
});

// External link click tracking
document.querySelectorAll('a[href^="http"]').forEach(link => {
  link.addEventListener('click', function() {
    gtag('event', 'external_link_click', {
      'link_url': this.href,
      'page_location': window.location.pathname
    });
  });
});

// File download tracking
document.querySelectorAll('a[href*=".pdf"], a[href*=".doc"]').forEach(link => {
  link.addEventListener('click', function() {
    gtag('event', 'file_download', {
      'file_name': this.href.split('/').pop(),
      'page_location': window.location.pathname
    });
  });
});

SEO investment cost items:
1. Labor cost (content creation, technical optimization time)
2. Tool subscription fees (Ahrefs/SEMrush/Moz, etc.)
3. Development cost (development work required for technical SEO)
4. Content outsourcing fees (if any)
5. External link construction fees

Calculation formula:
Total cost = labor cost + tool fee + development cost + outsourcing fee + link construction cost

SEO revenue sources:
1. Direct conversion revenue (transactions generated through organic traffic)
2. Brand value (growth of brand search volume)
3. Reduce paid advertising expenses (organic traffic replaces paid traffic)
4. Long-term asset value (content continues to generate traffic)

Calculation method:
Organic traffic value = organic traffic × conversion rate × average order value

ROI = (SEO revenue - SEO cost) / SEO cost × 100%

Example:
- Monthly SEO cost: 5,000 yuan (tools + outsourced content)
- Monthly sales from organic traffic: 25,000 yuan
- Savings from replacing paid ads: 3,000 yuan
- Total monthly revenue: 28,000 yuan

Monthly ROI = (28000 - 5000) / 5000 × 100% = 460%

1. Keyword Gap
   - Keywords that competitors rank for but you do not cover
   - High search volume low competition opportunity keywords

2. Backlink Gap
   - Links that competitors have but you do not
   - Reproducible link building strategies

3. Content Gap
   - Topics that competitors cover but you lack
   - Comparable content quality that can be surpassed

1. Import competitor domain names
2. Analyze natural traffic trends
3. Identify main traffic keywords
4. Analyze content types and structures
5. Review backlink sources
6. Identify reproducible strategies

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Recommended monthly KPIs:

1. Organic traffic growth: 5-10%
2. Target keywords entering top 3: 2-3
3. Page loading speed improvement: 10%
4. Index coverage: > 95%
5. Core pages Core Web Vitals compliance: > 90%

Measurement cycle:
- Daily: core indicator monitoring
- Weekly: ranking tracking update
- Monthly: complete report and strategy adjustment
- Quarterly: strategic review and planning