这一版本优化了很多

node_modules/wot-design-uni/components/wd-col/index.scss

@@ -0,0 +1,19 @@
+@import '../common/abstracts/variable';
+@import '../common/abstracts/mixin';
+
+$i: 1;
+
+@include b(col) {
+  float: left;
+  box-sizing: border-box;
+}
+
+@while $i <= 24 {
+  .wd-col__#{$i} {
+    width: calc(100% / 24 * $i);
+  }
+  .wd-col__offset-#{$i} {
+    margin-left: calc(100% / 24 * $i);
+  }
+  $i: $i + 1;
+}