Need help with nginx.conf (blank page after new install)

grav ver 1.1.1 (core+admin)
install method: local unpack–>ftp download
server: nginx+php5-fm (control panel Vesta)
nginx.conf (i use this conf with wordpress -work fine)

server {
    root        /home/site/web/;
    index       index.php index.html index.htm;
    access_log  /var/log/nginx/domains/ combined;
    access_log  /var/log/nginx/domains/ bytes;
    error_log   /var/log/nginx/domains/ error;

        gzip on; # set gzip
        gzip_disable "msie6";
        gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript;

	location / {

if ($host ~* ^site\.com$) { 
    rewrite ^(.*)$1 permanent;

location / {
    index index.php index.html index.htm;
    try_files $uri $uri/ /index.php?$args;

        location ~* ^.+\.(jpeg|jpg|png|gif|bmp|ico|svg|css|js)$ {
            expires     max;

        location ~ [^/]\.php(/|$) {
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            if (!-f $document_root$fastcgi_script_name) {
                return  404;

            fastcgi_index   index.php;
            include         /etc/nginx/fastcgi_params;

    error_page  403 /error/404.html;
    error_page  404 /error/404.html;
    error_page  500 502 503 504 /error/50x.html;

Please compare your Nginx.conf to the one in the webserver-configs folder in the Grav install.

However a blank page usually means a PHP error or missing dependency of some sort. Please check the required dependencies from the docs and also check your php and Nginx error logs for clues.