server {
    listen 80;
    server_name _;
    root /usr/share/nginx/html;
    index index.html;

    # 开启 gzip，明显减小 JS/CSS 传输体积
    gzip on;
    gzip_types text/plain text/css application/javascript application/json image/svg+xml;
    gzip_min_length 1k;

    # 带内容哈希的构建产物：长缓存
    location /assets/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # SPA 回退：所有路径都交给 index.html
    location / {
        try_files $uri $uri/ /index.html;
    }
}