feat(6.9.3): expand the scope of use of liquid glass filters

Author: bunizao

assets/css/style.css

@@ -140,12 +140,14 @@ $toc-breakpoint-small: 480px;
   width: 4.4rem;
   height: 4.4rem;
   z-index: 200;
-  background: var(--color-background-main);
+  background: rgba(255,255,255,0.08);
   border: none;
   border-radius: 50%;
   color: var(--color-content-main);
   cursor: pointer;
-  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
+  -webkit-backdrop-filter: url(#liquid-glass);
+  backdrop-filter: url(#liquid-glass);
   transition: $toc-transition;
   opacity: 0;
   visibility: hidden;