YII2. Radio Buttons: How to change the style for the selected option?

Question

css

Usually I wrote in css:
input[type=radio]:checked + label:before { ... }
And in HTML:

<input id="decline" type="radio" name="action" value="Decline">
<label for="decline">Decline</label>

And everything was great.
But in YII2 it doesn't work like this.
To generate a radio selector, I use the following code

<?=$form->field($model, 'checkingAction')->inline()->radioList($text[weekly_check_options], [
            'onchange' => new \yii\web\JsExpression($onChangeJs)]
        )->label(false);?>

And in HTML I get:

<label class="radio-inline"><input type="radio" name="Task_to_user[checkingAction]" value="2"> Decline</label>

Any ideas how to style your checked option with this syntax?
Or maybe there are other ways to generate radio selector via Active Form?