diff --git a/vite-tailwindcss/src/components/PhotoGallery.vue b/vite-tailwindcss/src/components/PhotoGallery.vue
index 4755317..c9ab4f3 100644
--- a/vite-tailwindcss/src/components/PhotoGallery.vue
+++ b/vite-tailwindcss/src/components/PhotoGallery.vue
@@ -38,9 +38,9 @@
 
     <!-- 九宫格 -->
     <div v-else-if="page.type === 'nine-grid'" class="grid grid-cols-3 gap-1.5 px-4 mt-6">
-      <div v-for="(img, imgIdx) in page.images" :key="imgIdx" v-reveal="{ variant: 'scale', delay: imgIdx * 60 }"
-           class="aspect-square relative" :class="frameClass">
-        <img :src="img" class="hover:scale-105 transition-transform duration-700" />
+      <div v-for="(img, imgIdx) in page.images" :key="imgIdx" v-reveal="{ variant: 'up', delay: imgIdx * 24 }"
+           class="nine-grid-reveal aspect-square relative" :class="frameClass">
+        <img :src="img" loading="lazy" decoding="async" class="nine-grid-img" />
       </div>
     </div>
 
@@ -144,6 +144,26 @@ function polaroidTransform(i) {
 .gallery-subtitle { font-family: var(--font-display); }
 .gallery-desc { font-family: var(--font-kai); }
 
+.nine-grid-reveal.reveal {
+  transform: translate3d(0, 12px, 0);
+  transition:
+    opacity 420ms ease-out,
+    transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
+  will-change: opacity, transform;
+}
+.nine-grid-reveal.reveal--in {
+  transform: translate3d(0, 0, 0);
+}
+.nine-grid-img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  transform: translateZ(0);
+  transition: transform 420ms ease-out;
+  backface-visibility: hidden;
+}
+.nine-grid-img:hover { transform: translateZ(0) scale(1.03); }
+
 /* 错落双图：高度随视口缩放并封顶，保证标题+图片总高始终落在页高预算内 */
 .overlap-wrap { height: clamp(320px, 54vh, 460px); }
 
diff --git a/vite-tailwindcss/src/views/index/index.vue b/vite-tailwindcss/src/views/index/index.vue
index 9e140a5..5fb7aec 100644
--- a/vite-tailwindcss/src/views/index/index.vue
+++ b/vite-tailwindcss/src/views/index/index.vue
@@ -324,6 +324,7 @@ const rsvpForm = reactive({ name: '', guest_count: '1', wishes: '' })
 const rsvpOptions = [ { value: '1', label: '1 人出席' }, { value: '2', label: '2 人出席' }, { value: '3', label: '3 人及以上' }, { value: '0', label: '遗憾缺席' } ]
 
 let rafId = null, snapTimer = null, pauseTimer = null, introTimer = null, freeTimer = null, animId = null, scrollStartTimer = null, bottomReturnTimer = null
+let freeScrollLastTs = 0
 const BOTTOM_RETURN_DELAY = 30000
 
 // 后台可配置的滚动参数（带默认值兜底，防止脏数据）
@@ -464,24 +465,30 @@ const startAutoScroll = () => {
   clearTimeout(scrollStartTimer)
   clearInterval(snapTimer)
   clearInterval(freeTimer)
+  cancelAnimationFrame(rafId)
   if (data.value.scrollMode === 'snap') {
     if (isAutoScroll.value && !isInteracting.value && !isDrawerOpen.value) goNextSection()
     snapTimer = setInterval(() => {
       if (isAutoScroll.value && !isInteracting.value && !isDrawerOpen.value) goNextSection()
     }, 4500)
   } else {
-    // 自由滚动：setInterval 按后台配置的间隔匀速推进（间隔越小越快）
-    freeTimer = setInterval(() => {
+    // 自由滚动：按浏览器帧率匀速推进，速度仍由后台间隔控制（间隔越小越快）
+    freeScrollLastTs = 0
+    const tickFreeScroll = (now) => {
+      const dt = freeScrollLastTs ? Math.min(34, now - freeScrollLastTs) : 16.7
+      freeScrollLastTs = now
       const el = scrollContainerRef.value
       if (el && isAutoScroll.value && !isInteracting.value && !isDrawerOpen.value) {
         if (isAtBottom(el)) {
           scheduleBottomReturn()
-          return
+        } else {
+          el.scrollTop += dt * (1.2 / freeInterval.value)
+          if (isAtBottom(el)) scheduleBottomReturn()
         }
-        el.scrollTop += 1.2
-        if (isAtBottom(el)) scheduleBottomReturn()
       }
-    }, freeInterval.value)
+      rafId = requestAnimationFrame(tickFreeScroll)
+    }
+    rafId = requestAnimationFrame(tickFreeScroll)
   }
 }