fix: 修复首屏加载慢和菜单延迟问题

🐛 核心问题:
- HomePartnersWork 的 ScrollTrigger 在 onMounted 时立即初始化
- 复杂的卡片堆叠动画计算阻塞了首屏 Hero 动画
- 导致菜单延迟出现，用户体验不佳

✅ 解决方案:
- 监听 'hero-intro-done' 事件，等待 Hero 动画完成后才初始化
- 添加 3 秒保底延迟，确保不会无限等待
- 将 ScrollTrigger 初始化封装为独立函数
- 不影响原有的卡片堆叠滚动效果

🎯 效果:
- 首屏 Hero 动画流畅，不再被阻塞
- 菜单在 Hero 动画 60% 时立即出现
- HomePartnersWork 在 Hero 完成后异步初始化
- 用户体验大幅提升

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/components/home/HomePartnersWork.vue

@@ -100,66 +100,83 @@ onMounted(async () => {
 
   await nextTick()
 
-  ctx = gsap.context(() => {
-    const cards = cardRefs.value
-    const count = cards.length
+  // 延迟初始化 ScrollTrigger，避免阻塞首屏 Hero 动画
+  // 等待 Hero 入场动画完成（约 3-4 秒）
+  const initScrollAnimation = () => {
+    ctx = gsap.context(() => {
+      const cards = cardRefs.value
+      const count = cards.length
 
-    if (count < 2) return
+      if (count < 2) return
 
-    const enterOffset = 160
-    const scaleTo = 0.92
-    const depthOffsetY = -18
+      const enterOffset = 160
+      const scaleTo = 0.92
+      const depthOffsetY = -18
 
-    for (let i = 0; i < count; i += 1) {
-      const card = cards[i]
+      for (let i = 0; i < count; i += 1) {
+        const card = cards[i]
 
-      gsap.set(card, {
-        position: 'absolute',
-        inset: 0,
-        borderRadius: 22,
-        overflow: 'hidden',
-        transformOrigin: 'center center',
-        force3D: true,
-        zIndex: i + 1,
-        boxShadow: '0 18px 40px rgba(0,0,0,0.12)',
-        y: i === 0 ? 0 : window.innerHeight + enterOffset,
-        scale: 1,
+        gsap.set(card, {
+          position: 'absolute',
+          inset: 0,
+          borderRadius: 22,
+          overflow: 'hidden',
+          transformOrigin: 'center center',
+          force3D: true,
+          zIndex: i + 1,
+          boxShadow: '0 18px 40px rgba(0,0,0,0.12)',
+          y: i === 0 ? 0 : window.innerHeight + enterOffset,
+          scale: 1,
+        })
+      }
+
+      const tl = gsap.timeline()
+
+      for (let i = 1; i < count; i += 1) {
+        const prev = cards[i - 1]
+        const next = cards[i]
+        const start = i - 1
+
+        tl.to(
+          next,
+          { y: 0, duration: 1, ease: 'power2.out' },
+          start
+        )
+        tl.to(
+          prev,
+          { scale: scaleTo, y: depthOffsetY, duration: 0.6, ease: 'power2.out' },
+          start + 0.35
+        )
+        tl.set(prev, { scale: scaleTo, y: depthOffsetY }, start + 1)
+      }
+
+      ScrollTrigger.create({
+        trigger: workSectionRef.value,
+        start: 'top top',
+        end: () => `+=${(count - 1) * window.innerHeight}`,
+        pin: workPinRef.value,
+        scrub: true,
+        anticipatePin: 1,
+        invalidateOnRefresh: true,
+        animation: tl,
       })
-    }
 
-    const tl = gsap.timeline()
+      ScrollTrigger.refresh()
+    }, rootRef.value)
+  }
 
-    for (let i = 1; i < count; i += 1) {
-      const prev = cards[i - 1]
-      const next = cards[i]
-      const start = i - 1
+  // 监听 hero 动画完成事件
+  if (typeof window !== 'undefined') {
+    window.addEventListener('hero-intro-done', initScrollAnimation, { once: true })
 
-      tl.to(
-        next,
-        { y: 0, duration: 1, ease: 'power2.out' },
-        start
-      )
-      tl.to(
-        prev,
-        { scale: scaleTo, y: depthOffsetY, duration: 0.6, ease: 'power2.out' },
-        start + 0.35
-      )
-      tl.set(prev, { scale: scaleTo, y: depthOffsetY }, start + 1)
-    }
-
-    ScrollTrigger.create({
-      trigger: workSectionRef.value,
-      start: 'top top',
-      end: () => `+=${(count - 1) * window.innerHeight}`,
-      pin: workPinRef.value,
-      scrub: true,
-      anticipatePin: 1,
-      invalidateOnRefresh: true,
-      animation: tl,
-    })
-
-    ScrollTrigger.refresh()
-  }, rootRef.value)
+    // 保底：3秒后必定初始化
+    setTimeout(() => {
+      window.removeEventListener('hero-intro-done', initScrollAnimation)
+      if (!ctx) {
+        initScrollAnimation()
+      }
+    }, 3000)
+  }
 })
 
 onUnmounted(() => {