refactor: 客户评价改为无缝自动滚动轮播

✨ 重写为自动滚动:
- 无缝循环：复制一组卡片，滚到末尾自动重置
- requestAnimationFrame 驱动，流畅 60fps
- 鼠标悬停暂停，移开继续
- 移除导航点
- 移除模糊效果
- 移除拖拽交互
- 移除 3D 轮播效果

🎯 效果:
- 卡片从右向左匀速滚动
- 悬停时暂停，方便阅读
- 简洁干净，无多余装饰

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

app/components/home/HomeTestimonials.vue

@@ -11,15 +11,20 @@
         </p>
       </div>
 
-      <!-- 轮播容器 -->
-      <div class="relative h-[500px] md:h-[600px] select-none" @mousedown.prevent="startDrag" @mousemove="onDrag" @mouseup="endDrag" @mouseleave="endDrag" @touchstart="startDrag" @touchmove="onDrag" @touchend="endDrag">
-        <div ref="carouselRef" class="flex items-center h-full cursor-grab active:cursor-grabbing">
+      <!-- 自动滚动轮播 -->
+      <div class="relative overflow-hidden">
         <div
-            v-for="(testimonial, index) in testimonials"
-            :key="testimonial.id"
-            :ref="el => setCardRef(el, index)"
-            class="testimonial-card absolute flex-shrink-0 w-[320px] md:w-[400px] bg-white rounded-3xl p-8 md:p-10 shadow-xl"
-            :style="getCardStyle(index)"
+          ref="trackRef"
+          class="flex gap-6 md:gap-8"
+          :style="{ transform: `translateX(${offset}px)` }"
+          @mouseenter="pauseAutoplay"
+          @mouseleave="resumeAutoplay"
+        >
+          <!-- 复制两份实现无缝循环 -->
+          <div
+            v-for="(item, index) in allTestimonials"
+            :key="`card-${index}`"
+            class="testimonial-card flex-shrink-0 w-[320px] md:w-[400px] bg-white rounded-3xl p-8 md:p-10 shadow-lg hover:shadow-xl transition-shadow duration-300"
           >
             <!-- 评分 -->
             <div class="flex gap-1 mb-6">
@@ -28,43 +33,32 @@
 
             <!-- 评价内容 -->
             <p class="text-gray-700 text-base md:text-lg leading-relaxed mb-8 italic">
-              "{{ t(`home.testimonials.items.${testimonial.id}.content`) }}"
+              "{{ t(`home.testimonials.items.${item.id}.content`) }}"
             </p>
 
             <!-- 客户信息 -->
             <div class="flex items-center gap-4">
-              <div class="w-14 h-14 md:w-16 md:h-16 rounded-full overflow-hidden bg-gradient-to-br" :class="testimonial.avatarGradient">
+              <div class="w-14 h-14 md:w-16 md:h-16 rounded-full overflow-hidden bg-gradient-to-br" :class="item.avatarGradient">
                 <div class="w-full h-full flex items-center justify-center text-white text-xl md:text-2xl font-bold">
-                  {{ testimonial.initial }}
+                  {{ item.initial }}
                 </div>
               </div>
               <div>
                 <h4 class="text-lg md:text-xl font-bold text-black">
-                  {{ t(`home.testimonials.items.${testimonial.id}.name`) }}
+                  {{ t(`home.testimonials.items.${item.id}.name`) }}
                 </h4>
                 <p class="text-sm md:text-base text-gray-500">
-                  {{ t(`home.testimonials.items.${testimonial.id}.role`) }}
+                  {{ t(`home.testimonials.items.${item.id}.role`) }}
                 </p>
               </div>
             </div>
 
-            <!-- 公司 logo（装饰） -->
-            <div class="absolute top-8 right-8 w-10 h-10 opacity-20">
+            <!-- 装饰引号 -->
+            <div class="absolute top-8 right-8 w-10 h-10 opacity-10">
               <Icon name="ph:quotes-duotone" class="w-full h-full text-black" />
             </div>
           </div>
         </div>
-
-        <!-- 导航点 -->
-        <div class="absolute bottom-0 left-1/2 -translate-x-1/2 flex gap-3">
-          <button
-            v-for="(_, index) in testimonials"
-            :key="index"
-            @click="goToSlide(index)"
-            class="w-3 h-3 rounded-full transition-all duration-300"
-            :class="currentIndex === index ? 'bg-black w-8' : 'bg-gray-300 hover:bg-gray-400'"
-          ></button>
-        </div>
       </div>
     </div>
   </section>
@@ -82,142 +76,51 @@ const { t } = useI18n()
 
 const rootRef = ref<HTMLElement | null>(null)
 const headerRef = ref<HTMLElement | null>(null)
-const carouselRef = ref<HTMLElement | null>(null)
-const cardElements = ref<(HTMLElement | null)[]>([])
-const currentIndex = ref(2) // 从中间开始
-const isDragging = ref(false)
-const startX = ref(0)
-const currentX = ref(0)
+const trackRef = ref<HTMLElement | null>(null)
 let ctx: gsap.Context | null = null
-let autoplayInterval: ReturnType<typeof setInterval> | null = null
-
-const setCardRef = (el: any, index: number) => {
-  if (el) cardElements.value[index] = el
-}
+let animFrameId: number | null = null
 
 const testimonials = [
-  {
-    id: 'client1',
-    initial: 'A',
-    avatarGradient: 'from-blue-500 to-cyan-500'
-  },
-  {
-    id: 'client2',
-    initial: 'B',
-    avatarGradient: 'from-purple-500 to-pink-500'
-  },
-  {
-    id: 'client3',
-    initial: 'C',
-    avatarGradient: 'from-orange-500 to-red-500'
-  },
-  {
-    id: 'client4',
-    initial: 'D',
-    avatarGradient: 'from-green-500 to-emerald-500'
-  },
-  {
-    id: 'client5',
-    initial: 'E',
-    avatarGradient: 'from-indigo-500 to-purple-500'
-  }
+  { id: 'client1', initial: 'A', avatarGradient: 'from-blue-500 to-cyan-500' },
+  { id: 'client2', initial: 'B', avatarGradient: 'from-purple-500 to-pink-500' },
+  { id: 'client3', initial: 'C', avatarGradient: 'from-orange-500 to-red-500' },
+  { id: 'client4', initial: 'D', avatarGradient: 'from-green-500 to-emerald-500' },
+  { id: 'client5', initial: 'E', avatarGradient: 'from-indigo-500 to-purple-500' },
 ]
 
-// 计算卡片样式（3D 轮播效果）
-const getCardStyle = (index: number) => {
-  const diff = index - currentIndex.value
-  const distance = 450 // 卡片间距
-  const offset = diff * distance
+// 复制一份用于无缝循环
+const allTestimonials = computed(() => [...testimonials, ...testimonials])
 
-  // 中心卡片
-  if (diff === 0) {
-    return {
-      transform: `translateX(calc(50vw - 50%)) translateZ(0) scale(1)`,
-      opacity: 1,
-      zIndex: 10,
-      filter: 'blur(0px)'
-    }
-  }
+// 自动滚动状态
+const offset = ref(0)
+const speed = 0.5 // 每帧移动像素
+let isPaused = false
+const cardWidth = 400 + 32 // 卡片宽度 + gap
 
-  // 左右卡片
-  const scale = 1 - Math.abs(diff) * 0.12
-  const opacity = Math.max(0.5, 1 - Math.abs(diff) * 0.25)
-
-  return {
-    transform: `translateX(calc(50vw - 50% + ${offset}px)) scale(${scale})`,
-    opacity: opacity,
-    zIndex: 10 - Math.abs(diff),
-  }
-}
-
-// 拖拽功能（鼠标 + 触摸）
-const startDrag = (e: MouseEvent | TouchEvent) => {
-  isDragging.value = true
-  startX.value = 'touches' in e ? e.touches[0].clientX : e.clientX
-  if (carouselRef.value) {
-    carouselRef.value.style.cursor = 'grabbing'
-  }
-}
-
-const onDrag = (e: MouseEvent | TouchEvent) => {
-  if (!isDragging.value) return
-  const clientX = 'touches' in e ? e.touches[0].clientX : e.clientX
-  currentX.value = clientX - startX.value
-}
-
-const endDrag = () => {
-  if (!isDragging.value) return
-  isDragging.value = false
-
-  if (carouselRef.value) {
-    carouselRef.value.style.cursor = 'grab'
-  }
-
-  // 降低阈值到 50px，更灵敏
-  if (Math.abs(currentX.value) > 50) {
-    if (currentX.value > 0) {
-      goToSlide(Math.max(0, currentIndex.value - 1))
-    } else {
-      goToSlide(Math.min(testimonials.length - 1, currentIndex.value + 1))
-    }
-  }
-
-  currentX.value = 0
-  startX.value = 0
-}
-
-// 切换到指定幻灯片
-const goToSlide = (index: number) => {
-  currentIndex.value = index
-  updateCards()
-}
-
-// 更新卡片位置
-const updateCards = () => {
-  cardElements.value.forEach((card, index) => {
-    if (!card) return
-    const style = getCardStyle(index)
-    gsap.to(card, {
-      ...style,
-      duration: 0.8,
-      ease: 'power2.out'
-    })
-  })
-}
-
-// 自动播放
 const startAutoplay = () => {
-  autoplayInterval = setInterval(() => {
-    const nextIndex = (currentIndex.value + 1) % testimonials.length
-    goToSlide(nextIndex)
-  }, 5000)
+  const totalWidth = testimonials.length * cardWidth
+
+  const animate = () => {
+    if (!isPaused) {
+      offset.value -= speed
+
+      // 当第一组卡片完全滚出时，重置位置实现无缝
+      if (Math.abs(offset.value) >= totalWidth) {
+        offset.value += totalWidth
+      }
+    }
+    animFrameId = requestAnimationFrame(animate)
   }
 
-const stopAutoplay = () => {
-  if (autoplayInterval) {
-    clearInterval(autoplayInterval)
-    autoplayInterval = null
+  animFrameId = requestAnimationFrame(animate)
 }
+
+const pauseAutoplay = () => {
+  isPaused = true
+}
+
+const resumeAutoplay = () => {
+  isPaused = false
 }
 
 onMounted(async () => {
@@ -225,51 +128,36 @@ onMounted(async () => {
   if (!rootRef.value || !headerRef.value) return
 
   ctx = gsap.context(() => {
-    // 初始状态：标题隐藏，卡片居中缩小
-    gsap.set(headerRef.value, { autoAlpha: 0, y: 50 })
-    cardElements.value.forEach((card, index) => {
-      if (!card) return
-      gsap.set(card, { autoAlpha: 0, scale: 0.5 })
-    })
-
-    // 入场动画（无 pin）：标题 + 卡片从中心扩散
-    const totalCards = testimonials.length
-    const tl = gsap.timeline()
-
-    tl.to(headerRef.value, { autoAlpha: 1, y: 0, duration: 0.8, ease: 'power3.out' }, 0)
-    cardElements.value.forEach((card, index) => {
-      if (!card) return
-      tl.to(card, { autoAlpha: 1, scale: 1, duration: 0.6, ease: 'back.out(1.5)' }, 0.3 + index * 0.08)
-    })
-
-    // 初始化到第一张卡片
-    tl.call(() => { currentIndex.value = 0 }, [], 0.3)
-
-    ScrollTrigger.create({
+    // 标题入场动画
+    gsap.fromTo(headerRef.value,
+      { autoAlpha: 0, y: 50 },
+      {
+        scrollTrigger: {
           trigger: rootRef.value,
           start: 'top 75%',
           toggleActions: 'play none none none',
-      animation: tl,
-    })
+        },
+        autoAlpha: 1,
+        y: 0,
+        duration: 0.8,
+        ease: 'power3.out',
+      }
+    )
   }, rootRef.value)
 
-  // 不启动自动播放，使用滚动控制
-  // startAutoplay()
+  // 启动自动滚动
+  startAutoplay()
 })
 
 onUnmounted(() => {
   ctx?.revert()
-  stopAutoplay()
+  if (animFrameId) cancelAnimationFrame(animFrameId)
 })
 </script>
 
 <style scoped>
 .testimonial-card {
-  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.5s ease;
-  will-change: transform, opacity;
-  cursor: grab;
-}
-.testimonial-card:active {
-  cursor: grabbing;
+  position: relative;
+  will-change: transform;
 }
 </style>