.tc-main{width:100%;}

.tc-narrow{max-width:800px;margin-inline:auto;}
.tc-medium{max-width:900px;margin-inline:auto;}

.tc-hero h1{margin-bottom:var(--space-4);}
.tc-hero p{max-width:70ch;}

.tc-section h2{margin-bottom:var(--space-4);}

.tc-section p{max-width:75ch;}

@media (max-width:768px){
  .tc-narrow,.tc-medium{max-width:100%;}
  .tc-hero p,.tc-section p{max-width:100%;}
}