fix: nginx

Signed-off-by: Omar Sánchez Pizarro <omar.sanchez@pistacero.net>

web/NGINX_CONFIG.md

@@ -47,6 +47,7 @@ nginx dashboard → /usr/share/nginx/html/dashboard/assets/index-abc123.js
 
 - **Astro config**: Sin base (raíz por defecto)
 - **Nginx interno**: Sirve desde `/usr/share/nginx/html/`
+- **Nginx config**: `web/landing/nginx.conf`
 - **Assets**: Se construyen para la raíz
 
 **Flujo de peticiones**:
@@ -58,6 +59,15 @@ nginx proxy → http://landing:80/
 nginx landing → /usr/share/nginx/html/index.html
 ```
 
+**Assets (ej: logo.jpg)**:
+```
+Usuario → http://localhost/logo.jpg
+  ↓
+nginx proxy → http://landing:80/logo.jpg
+  ↓
+nginx landing → /usr/share/nginx/html/logo.jpg
+```
+
 ## Puertos
 
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