fix media queries temporarily

src/styles/components/filter.scss

@@ -1,8 +1,10 @@
+@import '../../styles/sccs-vars.scss';
+
 .filter {
   margin-bottom: 40px;
 
   /* @todo: re-enable filter for mobile */
-  @media (--until-sm) {
+  @media (max-width: $until-sm) {
     display: none;
   }
-}
+}

src/styles/components/letter-index.scss

@@ -1,12 +1,16 @@
+@import '../../styles/sccs-vars.scss';
+
 .letter-index {
   margin-bottom: 60px;
+
   &__group {
     border-top: 1px solid var(--color-gray-normal);
     position: relative;
     padding: 0 0 0 200px;
     min-height: 80px;
-    @media (--until-md) {
-      padding:  0 0 0 50px;
+
+    @media (max-width: $until-md) {
+      padding: 0 0 0 50px;
     }
   }
 
@@ -17,8 +21,9 @@
     position: absolute;
     left: 50px;
     top: 0;
-    @media (--until-md) {
+
+    @media (max-width: $until-md) {
       left: 0;
     }
   }
-}
+}

src/styles/components/nav.scss

@@ -1,10 +1,13 @@
+@import '../../styles/sccs-vars.scss';
+
 .nav {
   white-space: nowrap;
 
   &__item {
     display: inline-flex;
     position: relative;
-    & + .nav__item {
+
+    &+.nav__item {
       margin-left: 20px;
     }
   }
@@ -32,11 +35,11 @@
   }
 
   &--relations {
-    @media (--until-md) {
+    @media (max-width: $until-md) {
       .nav__item {
         display: block;
         margin: 5px 0 0;
       }
     }
   }
-}
+}

src/styles/components/page.scss

@@ -1,3 +1,5 @@
+@import '../../styles/sccs-vars.scss';
+
 .page {
   max-width: 1200px;
   min-height: 100%;
@@ -13,11 +15,11 @@
     position: relative;
     z-index: 100;
 
-   @media (--until-sm) {
-     margin: 0
-   }
+    @media (max-width: $until-sm) {
+      margin: 0
+    }
 
-    @media (--until-lg) {
+    @media (max-width: $until-lg) {
       .nav {
         display: none;
       }
@@ -32,4 +34,4 @@
     margin-top: 5px;
     flex: 0 0 auto;
   }
-}
+}

src/styles/components/publish-date.scss

@@ -1,8 +1,10 @@
-.publish-date {
-    color: var(--color-gray-normal);
-    text-align: right;
+@import '../../styles/sccs-vars.scss';
 
-    @media (--until-sm) {
-        text-align: center;
-    }
+.publish-date {
+  color: var(--color-gray-normal);
+  text-align: right;
+
+  @media (max-width: $until-sm) {
+    text-align: center;
+  }
 }

src/styles/components/split.scss

@@ -1,3 +1,5 @@
+@import '../../styles/sccs-vars.scss';
+
 .split {
   display: flex;
   align-items: center;
@@ -19,7 +21,7 @@
     flex: 0 1 auto;
   }
 
-   @media (--until-sm) {
-     display: block;
-   }
-}
+  @media (max-width: $until-sm) {
+    display: block;
+  }
+}