feat(home): 为首页对话按钮添加悬停动画效果

添加GSAP动画效果，当鼠标悬停在对话按钮上时，文字会向上滑动并显示克隆文字，同时背景色块从底部滑入。离开时恢复原始状态。

app/components/home/HomeHero.vue

@@ -18,6 +18,7 @@ const heroRef = ref<HTMLElement | null>(null)
 const heroPanelRef = ref<HTMLElement | null>(null)
 const brandNameRef = ref<HTMLElement | null>(null)
 const studioNameRef = ref<HTMLElement | null>(null)
+const talkBtnRef = ref<HTMLElement | null>(null)
 
 let cleanupHeroScroll: (() => void) | null = null
 
@@ -112,7 +113,39 @@ const setupHeroScroll = () => {
   cleanupHeroScroll = () => gsap.ticker.remove(updateHeroPanelScale)
 }
 
+const onTalkHover = () => {
+  if (!talkBtnRef.value) return
+  const origs = talkBtnRef.value.querySelectorAll('.btn-char-orig')
+  const clones = talkBtnRef.value.querySelectorAll('.btn-char-clone')
+  const bg = talkBtnRef.value.querySelector('.btn-bg-hover')
+  
+  // 背景从底部滑入 (yPercent: 100 -> 0)
+  gsap.to(bg, { yPercent: 0, duration: 0.4, ease: 'power3.out', overwrite: true })
+
+  gsap.to(origs, { yPercent: -100, duration: 0.4, stagger: { amount: 0.2, from: 'start' }, ease: 'power3.out', overwrite: true })
+  gsap.to(clones, { yPercent: 0, duration: 0.4, stagger: { amount: 0.2, from: 'start' }, ease: 'power3.out', overwrite: true })
+}
+
+const onTalkLeave = () => {
+  if (!talkBtnRef.value) return
+  const origs = talkBtnRef.value.querySelectorAll('.btn-char-orig')
+  const clones = talkBtnRef.value.querySelectorAll('.btn-char-clone')
+  const bg = talkBtnRef.value.querySelector('.btn-bg-hover')
+  
+  // 背景向下反向滑出回收 (yPercent: 0 -> 100)
+  gsap.to(bg, { yPercent: 100, duration: 0.4, ease: 'power3.out', overwrite: true })
+
+  gsap.to(origs, { yPercent: 0, duration: 0.4, stagger: { amount: 0.2, from: 'end' }, ease: 'power3.out', overwrite: true })
+  gsap.to(clones, { yPercent: 100, duration: 0.4, stagger: { amount: 0.2, from: 'end' }, ease: 'power3.out', overwrite: true })
+}
+
 onMounted(() => {
+  if (talkBtnRef.value) {
+    const clones = talkBtnRef.value.querySelectorAll('.btn-char-clone')
+    const bg = talkBtnRef.value.querySelector('.btn-bg-hover')
+    gsap.set(clones, { yPercent: 100 })
+    gsap.set(bg, { yPercent: 100 })
+  }
   // 组件挂载时，先将整个 Hero 强行置于屏幕下方，等待外部调用 `play()` 才滑入
   if (heroRef.value) gsap.set(heroRef.value, { yPercent: 100 })
   // 初始化滚动监听逻辑
@@ -178,8 +211,39 @@ defineExpose({ play })
                 {{ t('hero.description') }}
               </p>
               <div>
-                <button class="bg-black text-white px-7 py-3.5 rounded-[2rem] font-semibold text-base transition-transform hover:scale-105 shadow-[0_15px_30px_-5px_rgba(0,0,0,0.3)]">
+                <button 
-                  {{ t('hero.letsTalk') }}
+                  ref="talkBtnRef"
+                  @mouseenter="onTalkHover"
+                  @mouseleave="onTalkLeave"
+                  class="relative overflow-hidden bg-black text-white px-7 py-3.5 rounded-[2rem] font-semibold text-[1rem] shadow-[0_15px_30px_-5px_rgba(0,0,0,0.3)] flex items-center justify-center group"
+                >
+                  <!-- 默认黑色背景层，防止文字动画时漏底 -->
+                  <div class="absolute inset-0 bg-black rounded-[2rem]"></div>
+                  
+                  <!-- Hover 时的灰色背景色块层 -->
+                  <div 
+                    class="btn-bg-hover absolute inset-0 bg-[#333333] rounded-[2rem] will-change-transform"
+                  ></div>
+
+                  <!-- 文本层 -->
+                  <span class="relative inline-flex overflow-hidden z-10">
+                    <span class="inline-flex">
+                      <span
+                        v-for="(char, index) in t('hero.letsTalk').split('')"
+                        :key="`orig-${index}`"
+                        class="btn-char-orig block will-change-transform"
+                        v-html="char === ' ' ? '&nbsp;' : char"
+                      ></span>
+                    </span>
+                    <span class="absolute inset-0 inline-flex" aria-hidden="true">
+                      <span
+                        v-for="(char, index) in t('hero.letsTalk').split('')"
+                        :key="`clone-${index}`"
+                        class="btn-char-clone block will-change-transform"
+                        v-html="char === ' ' ? '&nbsp;' : char"
+                      ></span>
+                    </span>
+                  </span>
                 </button>
               </div>
             </div>