fix: index time set

pages/index/index.vue

@@ -4,7 +4,7 @@
     <view class="hero">
       <view class="hero-badge">
         <text class="badge-dot">•</text>
-        <text class="badge-text">距春节还有 30 天</text>
+        <text class="badge-text">{{ countdownText }}</text>
       </view>
       <view class="hero-title">
         <text class="year">2026</text>
@@ -77,10 +77,48 @@
 </template>
 
 <script setup>
-import { ref } from "vue";
+import { ref, onMounted } from "vue";
 import { onPullDownRefresh, onShareAppMessage } from "@dcloudio/uni-app";
 import { getBavBarHeight } from "@/utils/system";
 
+const countdownText = ref("");
+
+const updateCountdown = () => {
+  const now = new Date();
+  const springFestival = new Date("2026-02-17T00:00:00"); // 2026春节
+
+  // 只比较日期，忽略时分秒
+  now.setHours(0, 0, 0, 0);
+  springFestival.setHours(0, 0, 0, 0);
+
+  const diffTime = now.getTime() - springFestival.getTime();
+  const days = Math.floor(diffTime / (1000 * 60 * 60 * 24));
+
+  if (days < 0) {
+    countdownText.value = `距春节还有 ${Math.abs(days)} 天`;
+  } else if (days === 0) {
+    countdownText.value = "大年初一";
+  } else {
+    const cnNums = ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十"];
+    if (days < 10) {
+      countdownText.value = `大年初${cnNums[days]}`;
+    } else if (days < 15) {
+      const sub = days + 1 - 10;
+      const subCn = ["一", "二", "三", "四", "五"][sub - 1];
+      countdownText.value = `正月十${subCn}`;
+    } else if (days === 14) {
+      // days=14是第15天
+      countdownText.value = "元宵节";
+    } else {
+      countdownText.value = "蛇年大吉";
+    }
+  }
+};
+
+onMounted(() => {
+  updateCountdown();
+});
+
 const features = ref([
   {
     title: "新春祝福卡片",