result.js

{
   "people":[
      {
         "person":{
            "animals":[
               {
                  "animal":{
                     "id":416016843,
                     "name":"Poiyo",
                     "pet_type":"fish",
                     "toys":[
                        {
                           "toy":{
                              "id":927160714,
                              "label":"LHC",
                              "pet_id":"416016843",
                              "price":1000000,
                              "railsize":"We are happy to code with power of Ruby and Rails",
                              "toy_id":"927160714"
                           }
                        },
                        {
                           "toy":{
                              "id":893961453,
                              "label":"Humanity",
                              "pet_id":"416016843",
                              "price":10,
                              "railsize":"We are happy to code with power of Ruby and Rails",
                              "toy_id":"893961453"
                           }
                        }
                     ]
                  }
               }
            ],
            "enhanced_name":"Eugene!!!",
            "hello_world":"Hello world!",
            "login":"Eugene"
         }
      },
      {
         "person":{
            "animals":[
               {
                  "animal":{
                     "id":992251607,
                     "name":"Skooby Doo",
                     "pet_type":"dog",
                     "toys":[
                        {
                           "toy":{
                              "id":893961453,
                              "label":"Humanity",
                              "pet_id":"992251607",
                              "price":10,
                              "railsize":"We are happy to code with power of Ruby and Rails",
                              "toy_id":"893961453"
                           }
                        },
                        {
                           "toy":{
                              "id":850957175,
                              "label":"continents",
                              "pet_id":"992251607",
                              "price":1000,
                              "railsize":"We are happy to code with power of Ruby and Rails",
                              "toy_id":"850957175"
                           }
                        }
                     ]
                  }
               }
            ],
            "enhanced_name":"Ivan!!!",
            "hello_world":"Hello world!",
            "login":"Ivan"
         }
      }
   ]
}

source.css

-@humans => people
  :only
    .name => login
  :code => enhanced_name
    name + "!!!"
  :code => hello_world
    "Hello world!"
  +pets => animals
    :except
      .human_id
      .pet_type_id
    +toys
      :methods
        .railsize("We ","are happy ","to code ","with power of PHP ","and Django")
    <pet_type
      :only
        .class_name => pet_type