perf: 优化template-admin-ts自带样式导入逻辑

src/styles/lib/reset.scss

@@ -0,0 +1,25 @@
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+  font-family: PingFangSC-Regular, PingFang SC;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+html,
+body {
+  background: $color-background;
+  font-family: $font-family-regular;
+  font-size: $font-size-14;
+  -webkit-print-color-adjust: exact;
+}
+
+p {
+  margin: 0;
+  padding: 0;
+}
+
+a {
+  text-decoration: none;
+}

src/styles/lib/variable.scss

@@ -0,0 +1,8 @@
+$font-family-regular: 'PingFangSC-Regular', 'Microsoft Yahei', Arial, sans-serif;
+$font-family-medium: 'PingFangSC-Medium', 'Microsoft Yahei', Arial, sans-serif;
+$font-family-light: 'PingFangSC-Light', 'Microsoft Yahei', Arial, sans-serif;
+$font-family-bold: 'PingFangSC-Semibold', 'PingFangSC-Regular', 'Microsoft Yahei', Arial, sans-serif;
+
+$color-background: #f9f9f9;
+
+$font-size-14: 14px;