Yun browser directories

Hi!! How can i change or configure the specific directions in my yun (browser):

Example:

arduino.local -> /sd/autobrew/index.php (my web aplication)
arduino.local/config -> /cgi-bin/luci/webpanel/homepage (luci configuration

I edit this file: etc/config/uhttpd

replace the:

option home '/www'

with this:

option home '/www/sd/autobrew/index.php'

Then reset the uhttpd and if I go to "arduino.local" it show my page but without css and in the browser: "cgi-bin/luci/webpanel/homepage".

What need to change? please!!

Google: openwrt configuring web server

thanks, it has a problem (if you make this the page redirect only the "ip", but withe "arduino.local" redirect to fake url). I change it to --> ../../sd/arduino/ and all ok. Thanks!