Add glass-fluid design tokens

src/style/index.styl

@@ -12,6 +12,13 @@
   --color-unfocus rgba(255, 255, 255, .5)
   --color-focus white
   --background-block: rgba(0,0,0,0.45)
+  --glass-bg: rgba(255, 255, 255, 0.06)
+  --glass-bg-active: rgba(255, 255, 255, 0.14)
+  --glass-border: rgba(255, 255, 255, 0.12)
+  --glass-border-active: rgba(255, 255, 255, 0.3)
+  --glass-blur: blur(20px) saturate(180%)
+  --glass-shadow: 0 4px 20px rgba(0, 0, 0, 0.2)
+  --glass-glow: 0 0 16px rgba(255, 255, 255, 0.35)
   --gap: 12px
   --zoom: 1
   --height-bar: 36px
@@ -38,4 +45,3 @@
       animation-iteration-count 1 !important
       transition-duration 0.01ms !important
       scroll-behavior auto !important
-