fix(style): introduce semiBoldWeight and various improvements to reduce CLS

Jacky Zhao

2024-02-17 06e3f8b93d5fbe96e7a05e4eb6be97b6a2d7ead0

 quartz/styles/variables.scss

@@ -5,4 +5,5 @@
$topSpacing: 6rem;
$fullPageWidth: $pageWidth + 2 * $sidePanelWidth;
$boldWeight: 700;
$semiBoldWeight: 600;
$normalWeight: 400;