Change onboarding by replacing tutorial with follow recommendations in web UI (#16060)

app/javascript/styles/mastodon/components.scss

@@ -1307,6 +1307,29 @@
     overflow: hidden;
     text-decoration: none;
     font-size: 14px;
+
+    &--with-note {
+      strong {
+        display: inline;
+      }
+    }
+  }
+
+  &__note {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    color: $ui-secondary-color;
+  }
+}
+
+.follow-recommendations-account {
+  .icon-button {
+    color: $ui-primary-color;
+
+    &.active {
+      color: $valid-value-color;
+    }
   }
 }
 
@@ -2459,6 +2482,49 @@ a.account__display-name {
   border-color: darken($ui-base-color, 8%);
 }
 
+.column-title {
+  text-align: center;
+  padding: 40px;
+
+  .logo {
+    fill: $primary-text-color;
+    width: 50px;
+    margin: 0 auto;
+    margin-bottom: 40px;
+  }
+
+  h3 {
+    font-size: 24px;
+    line-height: 1.5;
+    font-weight: 700;
+    margin-bottom: 10px;
+  }
+
+  p {
+    font-size: 16px;
+    line-height: 24px;
+    font-weight: 400;
+    color: $darker-text-color;
+  }
+}
+
+.column-actions {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 40px;
+  padding-top: 40px;
+  padding-bottom: 200px;
+
+  &__background {
+    position: absolute;
+    left: 0;
+    bottom: 0;
+    height: 220px;
+    width: auto;
+  }
+}
+
 .compose-panel {
   width: 285px;
   margin-top: 10px;