style(pages): 统一页面容器样式并调整概念新闻内容显示

- 为多个页面添加 max-width: 750rpx 和 margin: 0 auto 样式
- 统一页面容器宽度限制，提升移动端显示效果
- 调整概念新闻内容显示行数从2行改为1行

src/pages/concept/index.vue

@@ -113,6 +113,8 @@ onMounted(async () => {
 .container {
   position: relative;
   width: 100%;
+  max-width: 750rpx;
+  margin: 0 auto;
   background-color: #fff;
 }
 </style>

src/pages/detail/indexNewsInfo.vue

@@ -250,6 +250,9 @@ onLoad(async (option: any) => {
 
 <style lang="scss" scoped>
 .container {
+  width: 100%;
+  max-width: 750rpx;
+  margin: 0 auto;
   min-height: 100vh;
 
   .line {

src/pages/foreign/index.vue

@@ -171,6 +171,8 @@ onMounted(async () => {
 <style scoped lang="scss">
 .page-container {
   width: 100%;
+  max-width: 750rpx;
+  margin: 0 auto;
   background-image: url("@/assets/images/page/page_1@2x.png");
   background-size: 100% auto;
   background-repeat: no-repeat;

src/pages/industry/index.vue

@@ -113,6 +113,8 @@ onMounted(async () => {
 .container {
   position: relative;
   width: 100%;
+  max-width: 750rpx;
+  margin: 0 auto;
   background-color: #fff;
 }
 </style>

src/pages/macroscopic/index.vue

@@ -132,6 +132,8 @@ onMounted(async () => {
 <style scoped lang="scss">
 .page-container {
   width: 100%;
+  max-width: 750rpx;
+  margin: 0 auto;
   background-color: #fff;
   background-image: url("@/assets/images/page/page_3@2x.png");
   background-size: 100% auto;

src/pages/realtimeInfo/components/ConceptNewsView/index.vue

@@ -186,7 +186,7 @@ onMounted(async () => {
 
   .content {
     display: -webkit-box;
-    -webkit-line-clamp: 2;
+    -webkit-line-clamp: 1;
     -webkit-box-orient: vertical;
     overflow: hidden;
     text-overflow: ellipsis;

src/pages/recommend/index.vue

@@ -215,6 +215,8 @@ onMounted(async () => {
 <style scoped lang="scss">
 .page-container {
   width: 100%;
+  max-width: 750rpx;
+  margin: 0 auto;
   background-image: url("@/assets/images/page/page_2@2x.png");
   background-size: 100% auto;
   background-repeat: no-repeat;