server {
    listen 80;
    server_name localhost;
    
    # 设置根目录
    root /usr/share/nginx/html;
    index index.html;
    
    # 设置字符编码
    charset utf-8;
    
    # 主页面
    location / {
        try_files $uri $uri/ /index.html;
    }
    
    # 静态资源缓存设置
    location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|mp3|wav|ogg)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        add_header Access-Control-Allow-Origin "*";
    }
    
    # HTML文件缓存设置
    location ~* \.html$ {
        expires 1h;
        add_header Cache-Control "public";
    }
    
    # 启用gzip压缩
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types
        application/atom+xml
        application/geo+json
        application/javascript
        application/x-javascript
        application/json
        application/ld+json
        application/manifest+json
        application/rdf+xml
        application/rss+xml
        application/xhtml+xml
        application/xml
        font/eot
        font/otf
        font/ttf
        image/svg+xml
        text/css
        text/javascript
        text/plain
        text/xml;
    
    # 安全头设置
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;
    
    # 错误页面
    error_page 404 /index.html;
    
    # 日志
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;
}