fix：问卷整改h5增加“说明”显示

src/main/resources/views/platform/zhghh5/dayofficework/qsv/quiz/index.html

@@ -16,6 +16,11 @@ layout("/layouts/platform_h5.html"){
         </div>
 
         <div class="quiz-card-scroll" v-if="!answerRecord.isFinish">
+            <van-collapse v-if="activity.description" v-model="descriptionPanels" class="quiz-description" @change="adaptDescriptionToMobile">
+                <van-collapse-item title="说明" name="description" :value="descriptionPanels.length ? '收起' : '展开'">
+                    <div ref="descriptionContent" class="quiz-description-content" v-html="activity.description"></div>
+                </van-collapse-item>
+            </van-collapse>
             <div v-for="(subject, index) in subjects" :key="index" class="subject">
                 <p>{{index+1}}、{{ subject.title }}</p>
                 <div class="tag">
@@ -65,6 +70,7 @@ layout("/layouts/platform_h5.html"){
                 H5JumpTo: GetQueryString("H5JumpTo"),
                 subjects: [],
                 activity: {},
+                descriptionPanels: [],
                 isFinished: false,
                 answerRecord: {},
                 answerRecordId: null,
@@ -100,6 +106,28 @@ layout("/layouts/platform_h5.html"){
             }
         },
         methods: {
+            // 按原有字号层次缩小大字，不覆盖富文本颜色、字重、对齐等样式。
+            adaptDescriptionToMobile() {
+                this.$nextTick(() => {
+                    const content = this.$refs.descriptionContent
+                    if (!content || !this.descriptionPanels.length || content.dataset.mobileAdapted) return
+                    // 先读取全部字号，避免父元素缩放后影响子元素的继承字号计算。
+                    const sizes = [content, ...content.querySelectorAll('*')].map(element => ({
+                        element,
+                        size: parseFloat(window.getComputedStyle(element).fontSize)
+                    }))
+                    const maxSize = sizes.reduce((max, item) => Math.max(max, item.size || 0), 0)
+                    if (maxSize > 22) {
+                        const ratio = 8 / (maxSize - 14)
+                        sizes.forEach(({ element, size }) => {
+                            if (!Number.isFinite(size)) return
+                            const mobileSize = size > 14 ? 14 + (size - 14) * ratio : size
+                            element.style.setProperty('font-size', mobileSize + 'px', 'important')
+                        })
+                    }
+                    content.dataset.mobileAdapted = 'true'
+                })
+            },
             getCategoryPageTitle(category, defaultTitle) {
                 const titleMap = {
                     QUIZ: "在线答题",
@@ -412,6 +440,25 @@ layout("/layouts/platform_h5.html"){
                 box-sizing: border-box;
             }
 
+            .quiz-description {
+                margin-bottom: 14px;
+                border-radius: 8px;
+                overflow: hidden;
+            }
+
+            .quiz-description-content {
+                color: #303133;
+                line-height: 1.8;
+                overflow-wrap: break-word;
+                overflow-x: auto;
+            }
+
+
+            /deep/ .quiz-description-content img {
+                max-width: 100%;
+                height: auto;
+            }
+
             .subject {
                 background: #fff;
                 padding: 15px;