how to put coding in this blade file top?

[790676323]

i use @stack and @Push in my blade file.but it not works,because @stack works in layout blade,it not works in a section blade

@stack('test-section')

this is test section

@push('test-section')
    this is test put
@endpush

i just want to make a section have default data,for example

@extends('body')
@section('content')
@stack('test-section')

this is test section{{$top}}

@endsection

@push('test-section')
    this is test put
    @php
        $top = $top??'this top';
    @endphp
@endpush

$top is ok when $top declared in this blade top.my idea from shopify's liquid {% schema %}

it's not necessary ,the section data need declared in the section top,if i declared in the section top,code will become poorly managed

@extends('body')
@section('content')
    @php
        $top = $top??'this top';
        $top1 = $top??'this top';
        $top2 = $top??'this top';
        $top3 = $top??'this top';
        $top3 = $top??'this top';
        $top4 = $top??'this top';
        $top5 = $top??'this top';
        $top6 = $top??'this top';
        $top7 = $top??'this top';
        ...
    @endphp

    this is test section{{$top}}

@endsection

I need help.Thank you very much.