diff --git a/hunliji-api/main.go b/hunliji-api/main.go
index 9c342b1..d544065 100644
--- a/hunliji-api/main.go
+++ b/hunliji-api/main.go
@@ -111,7 +111,8 @@ func requireAdmin(c *gin.Context) bool {
 }
 
 func initDB() {
-	dsn := "root:mysql_PKC65h@tcp(127.0.0.1:3306)/nl_wedding?charset=utf8mb4&parseTime=True&loc=Local"
+	dsn := "root:root@tcp(127.0.0.1:3306)/nl_wedding?charset=utf8mb4&parseTime=True&loc=Local"
+	//dsn := "root:mysql_PKC65h@tcp(127.0.0.1:3306)/nl_wedding?charset=utf8mb4&parseTime=True&loc=Local"
 	var err error
 	db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
 	if err != nil {
diff --git a/vite-tailwindcss/src/components/PhotoGallery.vue b/vite-tailwindcss/src/components/PhotoGallery.vue
index f7b6c02..20a2e0c 100644
--- a/vite-tailwindcss/src/components/PhotoGallery.vue
+++ b/vite-tailwindcss/src/components/PhotoGallery.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="gallery">
+  <div ref="galleryRef" class="gallery">
     <!-- 标题区 -->
     <div v-reveal="'up'" class="text-center mb-5 px-4">
       <span class="gallery-title calligraphy text-xl text-[#a88c6b] tracking-[0.3em] font-bold block mb-2">{{ page.title }}</span>
@@ -10,18 +10,18 @@
     <!-- 单图（默认居中卡幅 / 可配置宽度铺满） -->
     <div v-if="page.type === 'single'" v-reveal="{ variant: 'scale', delay: 100 }"
          class="w-full mx-auto mt-6" :class="singleWrapClass" :style="singleWrapStyle">
-      <div :class="singleFrameClass"><img :src="page.img1" class="preview-img" @click.stop="previewImage(page.img1)" @load="notifyLayoutChange" /></div>
+      <div :class="singleFrameClass"><img :src="page.img1" class="preview-img" decoding="async" @click.stop="previewImage(page.img1)" @load="notifyLayoutChange" /></div>
     </div>
 
     <!-- 错落双图（交错拼贴：左上大图 + 右下压角叠放，微旋转；clamp 封顶不溢出） -->
     <div v-else-if="page.type === 'overlap'" class="overlap-wrap relative w-full mt-2">
       <div v-reveal="{ variant: 'left', delay: 100 }"
            class="absolute left-0 top-0 w-[72%] h-[78%] z-10 -rotate-2" :class="frameClass">
-        <img :src="page.img1" class="preview-img" @click.stop="previewImage(page.img1)" @load="notifyLayoutChange" />
+        <img :src="page.img1" class="preview-img" decoding="async" @click.stop="previewImage(page.img1)" @load="notifyLayoutChange" />
       </div>
       <div v-reveal="{ variant: 'right', delay: 300 }"
            class="absolute right-0 bottom-0 w-[56%] h-[62%] z-20 rotate-3" :class="frameClass">
-        <img :src="page.img2" class="preview-img" @click.stop="previewImage(page.img2)" @load="notifyLayoutChange" />
+        <img :src="page.img2" class="preview-img" decoding="async" @click.stop="previewImage(page.img2)" @load="notifyLayoutChange" />
       </div>
     </div>
 
@@ -29,20 +29,19 @@
     <div v-else-if="page.type === 'one-large-five-small'"
          class="relative w-full aspect-square mt-6 grid grid-cols-3 grid-rows-3 gap-1.5 z-20">
       <div v-reveal="{ variant: 'scale', delay: 100 }" class="col-span-2 row-span-2 relative" :class="frameClass">
-        <img :src="page.images[0]" class="preview-img hover:scale-105 transition-transform duration-1000" @click.stop="previewImage(page.images[0])" @load="notifyLayoutChange" />
+        <img :src="page.images[0]" class="preview-img hover:scale-105 transition-transform duration-1000" decoding="async" @click.stop="previewImage(page.images[0])" @load="notifyLayoutChange" />
       </div>
       <div v-for="i in [1,2,3,4,5]" :key="i" v-reveal="{ variant: 'up', delay: i * 80 }" class="relative" :class="frameClass">
-        <img :src="page.images[i]" class="preview-img" @click.stop="previewImage(page.images[i])" @load="notifyLayoutChange" />
+        <img :src="page.images[i]" class="preview-img" decoding="async" @click.stop="previewImage(page.images[i])" @load="notifyLayoutChange" />
       </div>
     </div>
 
     <!-- 九宫格 -->
-<!--    <div v-else-if="page.type === 'nine-grid'" v-reveal="{ variant: 'up', delay: 80 }" class="nine-grid grid grid-cols-3 gap-1.5 px-4 mt-6">-->
     <div v-else-if="page.type === 'nine-grid'" class="nine-grid grid grid-cols-3 gap-1.5 px-4 mt-6">
       <div v-for="(img, imgIdx) in page.images" :key="imgIdx"
            v-reveal="getRevealConfig(imgIdx)"
            class="aspect-square relative" :class="frameClass">
-        <img :src="img" class="nine-grid-img preview-img" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
+        <img :src="img" class="nine-grid-img preview-img" decoding="async" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
       </div>
     </div>
 
@@ -50,7 +49,7 @@
     <div v-else-if="page.type === 'masonry'" class="g-masonry mt-6 px-1">
       <div v-for="(img, imgIdx) in page.images" :key="imgIdx" v-reveal="{ variant: 'up', delay: imgIdx * 50 }"
            class="g-masonry-item" :class="frameClass">
-        <img :src="img" class="preview-img" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
+        <img :src="img" class="preview-img" decoding="async" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
       </div>
     </div>
 
@@ -58,7 +57,7 @@
     <div v-else-if="page.type === 'carousel'" class="relative mt-6">
       <div ref="trackRef" class="g-carousel-track no-scrollbar" @scroll="onScroll">
         <div v-for="(img, imgIdx) in page.images" :key="imgIdx" class="g-carousel-slide" :class="frameClass">
-          <img :src="img" class="preview-img" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
+          <img :src="img" class="preview-img" decoding="async" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
         </div>
       </div>
       <button class="g-arrow g-prev" @click="goTo(index - 1)" aria-label="上一张">‹</button>
@@ -73,7 +72,7 @@
     <div v-else-if="page.type === 'polaroid'" class="g-polaroid mt-6">
       <div v-for="(img, imgIdx) in page.images" :key="imgIdx" v-reveal="{ variant: 'scale', delay: imgIdx * 70 }"
            class="g-polaroid-item" :style="{ transform: polaroidTransform(imgIdx) }">
-        <img :src="img" class="preview-img" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
+        <img :src="img" class="preview-img" decoding="async" @click.stop="previewImage(img)" @load="notifyLayoutChange" />
       </div>
     </div>
 
@@ -85,11 +84,17 @@
 <script setup>
 import { ref, computed } from 'vue'
 import { borderClass } from '@/composables/borderStyles'
+import { useImageWarmup } from '@/composables/useImageWarmup'
 
 const props = defineProps({
   page: { type: Object, required: true },
 })
-const emit = defineEmits(['preview-image', 'layout-change'])
+const emit = defineEmits(['preview-image', 'layout-change', 'warmup-change'])
+
+const galleryRef = ref(null)
+useImageWarmup(galleryRef, {
+  onBusyChange: (busy) => emit('warmup-change', busy),
+})
 
 // 边框样式：前台按 page.borderStyle 套用全局 gf-* 类
 const frameClass = computed(() => borderClass(props.page.borderStyle))
@@ -113,6 +118,13 @@ const singleFrameClass = computed(() =>
   frameClass.value + (props.page.singleWidth === 'full' && props.page.singleKeepRatio ? ' gf-natural' : '')
 )
 
+/** 仅高度可能随图片加载变化的版式才通知父级重算 scroll metrics */
+const needsLayoutNotify = computed(() => {
+  if (props.page.height === 'auto') return true
+  if (props.page.type === 'single' && props.page.singleWidth === 'full' && props.page.singleKeepRatio) return true
+  return false
+})
+
 /* ---------- 轮播状态 ---------- */
 const index = ref(0)
 const trackRef = ref(null)
@@ -136,6 +148,7 @@ function previewImage(src) {
 }
 
 function notifyLayoutChange() {
+  if (!needsLayoutNotify.value) return
   emit('layout-change')
 }
 
@@ -148,15 +161,14 @@ function polaroidTransform(i) {
   return `rotate(${a}deg) translateY(${s}px)`
 }
 
-
 function getRevealConfig(imgIdx) {
   const row = Math.floor(imgIdx / 3)
   const col = imgIdx % 3
 
-  // 正中心
+  // 正中心：用 scale 代替 blur，避免大图 filter 动画与解码叠峰
   if (imgIdx === 4) {
     return {
-      variant: 'blur',
+      variant: 'scale',
       delay: 200,
     }
   }
@@ -172,7 +184,7 @@ function getRevealConfig(imgIdx) {
   // 左右列
   return {
     variant: col === 0 ? 'left' : 'right',
-    delay: 80 + ((imgIdx +80) * 20) ,
+    delay: 80 + ((imgIdx + 80) * 20),
   }
 }
 </script>
@@ -184,7 +196,6 @@ function getRevealConfig(imgIdx) {
   font-family: var(--font-calligraphy);
   font-weight: 700;
 }
-/*.gallery-subtitle { font-family: var(--font-display); }*/
 .gallery-desc { font-family: var(--font-kai); }
 
 .nine-grid-img {
diff --git a/vite-tailwindcss/src/composables/useImageWarmup.js b/vite-tailwindcss/src/composables/useImageWarmup.js
new file mode 100644
index 0000000..982d44a
--- /dev/null
+++ b/vite-tailwindcss/src/composables/useImageWarmup.js
@@ -0,0 +1,60 @@
+import { onMounted, onUnmounted } from 'vue'
+
+/**
+ * 提前约 1.5 屏预热区块内图片解码，避免滚入视口时与 free-scroll rAF 撞车。
+ * onBusyChange(true/false) 供父级短暂降低 canvas 粒子负载。
+ */
+export function useImageWarmup(rootRef, { onBusyChange } = {}) {
+  let observer = null
+  let busy = false
+  let warmToken = 0
+
+  const setBusy = (next) => {
+    if (busy === next) return
+    busy = next
+    onBusyChange?.(next)
+  }
+
+  const warmImages = async (el) => {
+    const token = ++warmToken
+    setBusy(true)
+    const imgs = el.querySelectorAll('img[src]')
+    await Promise.allSettled(
+      [...imgs].map((img) => {
+        if (typeof img.decode === 'function') {
+          return img.decode().catch(() => {})
+        }
+        if (img.complete) return Promise.resolve()
+        return new Promise((resolve) => {
+          img.addEventListener('load', resolve, { once: true })
+          img.addEventListener('error', resolve, { once: true })
+        })
+      })
+    )
+    if (token === warmToken) setBusy(false)
+  }
+
+  onMounted(() => {
+    const el = rootRef.value
+    if (!el || typeof IntersectionObserver === 'undefined') return
+    const scrollRoot = el.closest('.scrollable-area-body')
+    observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) warmImages(el)
+        else {
+          warmToken += 1
+          setBusy(false)
+        }
+      },
+      { root: scrollRoot, rootMargin: '150% 0px', threshold: 0 }
+    )
+    observer.observe(el)
+  })
+
+  onUnmounted(() => {
+    warmToken += 1
+    observer?.disconnect()
+    observer = null
+    setBusy(false)
+  })
+}
diff --git a/vite-tailwindcss/src/directives/reveal.js b/vite-tailwindcss/src/directives/reveal.js
index 11cdf96..a5b28d7 100644
--- a/vite-tailwindcss/src/directives/reveal.js
+++ b/vite-tailwindcss/src/directives/reveal.js
@@ -17,6 +17,9 @@ const VARIANTS = {
   blur: 'reveal-blur',
 }
 
+/** 同一滚动根只解析一次，避免每个 v-reveal 挂载都 getComputedStyle 爬树 */
+let cachedScrollRoot = undefined
+
 function parseBinding(value) {
   if (!value) return { variant: 'up', delay: 0 }
   if (typeof value === 'string') return { variant: value, delay: 0 }
@@ -27,11 +30,14 @@ function parseBinding(value) {
 }
 
 function findScrollRoot(el) {
+  // 请柬主滚动容器（避免被轮播 overflow-x 等内层滚动误匹配）
+  const named = el.closest?.('.scrollable-area-body')
+  if (named) return named
   let parent = el.parentElement
   while (parent && parent !== document.body) {
     const style = window.getComputedStyle(parent)
     const overflowY = style.overflowY
-    if ((overflowY === 'auto' || overflowY === 'scroll') && parent.scrollHeight > parent.clientHeight) {
+    if (overflowY === 'auto' || overflowY === 'scroll') {
       return parent
     }
     parent = parent.parentElement
@@ -39,6 +45,20 @@ function findScrollRoot(el) {
   return null
 }
 
+function getScrollRoot(el) {
+  if (cachedScrollRoot !== undefined) return cachedScrollRoot
+  cachedScrollRoot = findScrollRoot(el)
+  return cachedScrollRoot
+}
+
+function clearWillChange(el) {
+  el.style.willChange = 'auto'
+}
+
+function hasImageContent(el) {
+  return el.tagName === 'IMG' || !!el.querySelector?.('img')
+}
+
 const reveal = {
   mounted(el, binding) {
     const { variant, delay } = parseBinding(binding.value)
@@ -46,15 +66,37 @@ const reveal = {
     el.classList.add(VARIANTS[variant] || 'reveal-up')
     if (delay) el.style.transitionDelay = `${delay}ms`
 
+    // 含图片的节点不做 filter 过渡（大图 + blur 极贵），保留 opacity/transform
+    const imageHost = hasImageContent(el)
+    if (imageHost) {
+      el.classList.add('reveal--no-filter')
+      if (variant === 'blur') {
+        el.classList.remove('reveal-blur')
+        el.classList.add('reveal-scale')
+      }
+    }
+
     // 已处于视口（如首屏）时立即显示，避免永远不可见
     const observer = new IntersectionObserver(
       ([entry]) => {
         if (entry.isIntersecting) {
+          el.style.willChange = imageHost ? 'opacity, transform' : 'opacity, transform, filter'
           el.classList.add('reveal--in')
           observer.unobserve(el)
+          const onEnd = (e) => {
+            if (e.target !== el) return
+            clearWillChange(el)
+            el.removeEventListener('transitionend', onEnd)
+          }
+          el.addEventListener('transitionend', onEnd)
+          // 兜底：无 transition 或已被 reduce-motion 关掉时仍清 will-change
+          setTimeout(() => {
+            clearWillChange(el)
+            el.removeEventListener('transitionend', onEnd)
+          }, 1400 + (delay || 0))
         }
       },
-      { threshold: 0.12, root: findScrollRoot(el), rootMargin: '0px 0px -8% 0px' }
+      { threshold: 0.12, root: getScrollRoot(el), rootMargin: '0px 0px -8% 0px' }
     )
     observer.observe(el)
     el.__revealObserver = observer
@@ -64,6 +106,7 @@ const reveal = {
       el.__revealObserver.disconnect()
       delete el.__revealObserver
     }
+    clearWillChange(el)
   },
 }
 
diff --git a/vite-tailwindcss/src/styles/animations.css b/vite-tailwindcss/src/styles/animations.css
index 2a5cf5e..0e06329 100644
--- a/vite-tailwindcss/src/styles/animations.css
+++ b/vite-tailwindcss/src/styles/animations.css
@@ -10,7 +10,6 @@
     opacity 1.1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
     transform 1.1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
     filter 1.1s ease;
-  will-change: opacity, transform, filter;
 }
 .reveal-up    { transform: translateY(48px); }
 .reveal-down  { transform: translateY(-48px); }
@@ -21,6 +20,15 @@
 
 .reveal--in { opacity: 1; transform: none; filter: none; }
 
+/* 图片宿主：不做 filter 过渡，避免大图 decode + blur 叠峰 */
+.reveal--no-filter {
+  transition:
+    opacity 1.1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
+    transform 1.1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
+  filter: none !important;
+}
+.reveal--no-filter.reveal--in { filter: none !important; }
+
 @media (prefers-reduced-motion: reduce) {
   .reveal { opacity: 1 !important; transform: none !important; filter: none !important; transition: none; }
 }
@@ -77,7 +85,8 @@
 
 /* ---------- 背景柔光层（淡金/淡粉光斑，缓慢漂移，不喧宾夺主） ---------- */
 .bg-glow { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
-.bg-glow i { position: absolute; border-radius: 50%; filter: blur(46px); will-change: transform; }
+/* 柔光靠 radial-gradient 自身衰减，不再叠 CSS filter:blur（滚动时绘制成本很高） */
+.bg-glow i { position: absolute; border-radius: 50%; }
 .bg-glow .g1 {
   width: 300px; height: 300px; top: -90px; right: -70px;
   background: radial-gradient(circle, rgba(233, 206, 168, 0.5), transparent 68%);
diff --git a/vite-tailwindcss/src/views/index/index.vue b/vite-tailwindcss/src/views/index/index.vue
index d7a8a3d..6356bb5 100644
--- a/vite-tailwindcss/src/views/index/index.vue
+++ b/vite-tailwindcss/src/views/index/index.vue
@@ -92,7 +92,7 @@
           <div v-reveal="{ variant: 'scale', delay: 120 }" class="w-full max-w-[260px] aspect-[3/4] relative z-10">
             <div class="absolute inset-0 border border-[#a88c6b] translate-x-3 translate-y-3 opacity-30"></div>
             <div class="relative w-full h-full z-10 bg-[#F7F6F2] shadow-md overflow-hidden">
-              <img :src="data.heroImg" class="w-full h-full object-cover" />
+              <img :src="data.heroImg" class="w-full h-full object-cover" fetchpriority="high" decoding="async" alt="封面" />
             </div>
           </div>
 
@@ -128,16 +128,16 @@
 
       <!-- 3-N. 画廊循环 -->
       <div v-for="(page, pIdx) in data.photoPages" :key="pIdx" class="page-section p-6 relative" :class="data.scrollMode === 'snap' ? 'snap-start' : ''" :style="pageHeightStyle(page)">
-        <div class="absolute inset-0 bg-white/40 backdrop-blur-[2px] -z-10"></div>
+        <div class="absolute inset-0 bg-white/40 -z-10"></div>
         <div class="absolute top-0 left-0 w-24 h-24 border-l-[0.5px] border-t-[0.5px] border-[#a88c6b]/30 m-6 pointer-events-none z-0"></div>
         <div class="absolute bottom-0 right-0 w-24 h-24 border-r-[0.5px] border-b-[0.5px] border-[#a88c6b]/30 m-6 pointer-events-none z-0"></div>
         <div class="w-full h-full flex flex-col justify-center py-6 relative z-10">
-          <PhotoGallery :page="page" @preview-image="openImagePreview" @layout-change="scheduleScrollMetricsUpdate" />
+          <PhotoGallery :page="page" @preview-image="openImagePreview" @layout-change="scheduleScrollMetricsUpdateDebounced" @warmup-change="onGalleryWarmupChange" />
         </div>
       </div>
 
       <!-- 婚礼日历 -->
-      <div class="page-section wedding-calendar-page px-6 py-10 relative" :class="data.scrollMode === 'snap' ? 'snap-start' : ''">
+      <div ref="calendarPageRef" class="page-section wedding-calendar-page px-6 py-10 relative" :class="data.scrollMode === 'snap' ? 'snap-start' : ''">
         <div v-reveal="'up'" class="calendar-card">
           <div class="calendar-kicker">Save The Date</div>
           <div class="calendar-title">
@@ -160,12 +160,12 @@
               <span v-if="day === weddingDay" class="heart-ring" aria-hidden="true">
                 <svg viewBox="0 0 120 96" role="img">
                   <defs>
-                    <filter id="calendar-heart-rough" x="-18%" y="-18%" width="136%" height="136%">
+                    <filter v-if="calendarRoughActive" id="calendar-heart-rough" x="-18%" y="-18%" width="136%" height="136%">
                       <feTurbulence type="fractalNoise" baseFrequency="0.045" numOctaves="3" seed="11" result="noise" />
                       <feDisplacementMap in="SourceGraphic" in2="noise" scale="2.8" />
                     </filter>
                   </defs>
-                  <g filter="url(#calendar-heart-rough)">
+                  <g :filter="calendarRoughActive ? 'url(#calendar-heart-rough)' : undefined">
                     <path class="heart-brush heart-brush-shadow" d="M54 82 C31 70 12 50 13 29 C14 10 35 7 49 27 C56 37 58 49 59 56 C64 37 80 10 99 20 C113 28 105 51 90 66 C80 76 70 81 64 83" />
                     <path class="heart-brush heart-brush-main" d="M54 82 C31 70 12 50 13 29 C14 10 35 7 49 27 C56 37 58 49 59 56 C64 37 80 10 99 20 C113 28 105 51 90 66 C80 76 70 81 64 83" />
                     <path class="heart-brush heart-brush-tail" d="M94 61 C87 62 82 58 78 52" />
@@ -226,8 +226,8 @@
             <span>With Love</span>
             <i></i>
           </div>
-          <div v-reveal="{ variant: 'scale', delay: 100 }" class="ending-photo">
-            <img :src="endImage" class="w-full h-full bg-[#F7F6F2] object-cover" alt="婚礼尾页照片" />
+          <div ref="endingPhotoRef" v-reveal="{ variant: 'scale', delay: 100 }" class="ending-photo">
+            <img :src="endImage" class="w-full h-full bg-[#F7F6F2] object-cover" loading="lazy" decoding="async" alt="婚礼尾页照片" />
           </div>
           <div v-reveal="{ variant: 'up', delay: 180 }" class="ending-copy">
             <span class="ending-title calligraphy">期待您的光临</span>
@@ -313,6 +313,7 @@
 import { ref, reactive, computed, nextTick, onMounted, onUnmounted, watch } from 'vue'
 import { getAlbumImages, getConfig, submitRsvp } from '@/api/wedding'
 import { useAudio } from '@/composables/useAudio'
+import { useImageWarmup } from '@/composables/useImageWarmup'
 import CanvasEffects from '@/components/CanvasEffects.vue'
 import PhotoGallery from '@/components/PhotoGallery.vue'
 
@@ -336,14 +337,24 @@ const showIntro = ref(false), introOpening = ref(false), showTrackList = ref(fal
 const previewVisible = ref(false), previewIndex = ref(0), albumLoaded = ref(false)
 const albumPreviewImages = ref([])
 const maxScrollTop = ref(0)
+const calendarPageRef = ref(null)
+const calendarRoughActive = ref(false)
+const endingPhotoRef = ref(null)
+const galleryWarmupCount = ref(0)
 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, metricsRaf = null
+let metricsDebounceTimer = null
+let calendarRoughObserver = null
 let freeScrollLastTs = 0
 let freeScrollCarry = 0
+let programmaticScroll = false
+let progressPaintTs = 0
 const BOTTOM_RETURN_DELAY = 30000
 const FREE_SCROLL_BASE_STEP = 1.2
+const PROGRESS_PAINT_INTERVAL = 1000 / 12
+const METRICS_DEBOUNCE_MS = 120
 
 // 后台可配置的滚动参数（带默认值兜底，防止脏数据）
 const freeInterval = computed(() => {
@@ -352,7 +363,7 @@ const freeInterval = computed(() => {
 })
 const freeScrollSignature = computed(() => `${data.value.scrollMode}:${freeInterval.value}`)
 const restartAutoScroll = () => {
-  if (snapTimer || rafId) startAutoScroll()
+  if (isAutoScroll.value) startAutoScroll()
 }
 const switchDuration = computed(() => {
   const v = Number(data.value.pageSwitchDuration)
@@ -448,11 +459,14 @@ const handlePreviewVisibleChange = (visible) => {
   if (visible) {
     clearBottomReturn()
     cancelAnimationFrame(animId)
+    animId = null
+    stopFreeScrollLoop()
     return
   }
   freeScrollLastTs = 0
   freeScrollCarry = 0
   if (isAutoScroll.value && isAtBottom()) scheduleBottomReturn(true)
+  else maybeResumeFreeScroll()
 }
 
 const albumPreviewOptions = computed(() => ({
@@ -476,13 +490,23 @@ const openImagePreview = async (src) => {
   freeScrollCarry = 0
   clearBottomReturn()
   cancelAnimationFrame(animId)
+  animId = null
+  stopFreeScrollLoop()
 }
 
 const isAutoScrollBlocked = () =>
   isInteracting.value || isDrawerOpen.value || previewVisible.value || showMapOptions.value || showIntro.value
 
 const effectsActive = computed(() => !isDrawerOpen.value && !previewVisible.value && !showMapOptions.value && !showIntro.value)
-const effectsPerformanceMode = computed(() => data.value.scrollMode === 'free' && isAutoScroll.value)
+const effectsPerformanceMode = computed(() =>
+  (data.value.scrollMode === 'free' && isAutoScroll.value) || galleryWarmupCount.value > 0
+)
+
+const onGalleryWarmupChange = (busy) => {
+  galleryWarmupCount.value = Math.max(0, galleryWarmupCount.value + (busy ? 1 : -1))
+}
+
+useImageWarmup(endingPhotoRef, { onBusyChange: onGalleryWarmupChange })
 
 const updateScrollMetrics = () => {
   const el = scrollContainerRef.value
@@ -492,33 +516,87 @@ const updateScrollMetrics = () => {
   return max
 }
 
-const scheduleScrollMetricsUpdate = () => {
+const paintProgressBar = (scrollTop, force = false) => {
+  const now = performance.now()
+  if (!force && now - progressPaintTs < PROGRESS_PAINT_INTERVAL) return
+  progressPaintTs = now
+  const max = maxScrollTop.value
+  const p = max > 0 ? Math.min(1, scrollTop / max) : 0
+  progress.value = p
+  if (progressBarRef.value) progressBarRef.value.style.transform = `scaleX(${p})`
+}
+
+/** 程序化改 scrollTop：避免同步 @scroll 再走布局/响应式热路径 */
+const setProgrammaticScrollTop = (el, top) => {
+  programmaticScroll = true
+  el.scrollTop = top
+  programmaticScroll = false
+  paintProgressBar(top)
+}
+
+const applyScrollSideEffects = () => {
+  const el = scrollContainerRef.value
+  if (!el) return
+  paintProgressBar(el.scrollTop, true)
+  if (isAtBottom()) scheduleBottomReturn()
+  else clearBottomReturn()
+}
+
+const flushScrollMetrics = () => {
   cancelAnimationFrame(metricsRaf)
   metricsRaf = requestAnimationFrame(() => {
     metricsRaf = null
     updateScrollMetrics()
-    handleScroll()
+    applyScrollSideEffects()
   })
 }
 
+const scheduleScrollMetricsUpdate = () => {
+  clearTimeout(metricsDebounceTimer)
+  metricsDebounceTimer = null
+  flushScrollMetrics()
+}
+
+const scheduleScrollMetricsUpdateDebounced = () => {
+  clearTimeout(metricsDebounceTimer)
+  metricsDebounceTimer = setTimeout(() => {
+    metricsDebounceTimer = null
+    flushScrollMetrics()
+  }, METRICS_DEBOUNCE_MS)
+}
+
 const closeDrawer = () => { isDrawerOpen.value = false }
 const handleScroll = () => {
+  if (programmaticScroll) return
   const el = scrollContainerRef.value
   if (!el) return
-  const max = maxScrollTop.value || updateScrollMetrics()
-  progress.value = max > 0 ? Math.min(1, el.scrollTop / max) : 0
-  if (progressBarRef.value) progressBarRef.value.style.transform = `scaleX(${progress.value})`
-  if (isAtBottom()) scheduleBottomReturn()
-  else clearBottomReturn()
+  if (maxScrollTop.value <= 0) updateScrollMetrics()
+  applyScrollSideEffects()
+}
+
+const stopFreeScrollLoop = () => {
+  cancelAnimationFrame(rafId)
+  rafId = null
+}
+
+const maybeResumeFreeScroll = () => {
+  if (data.value.scrollMode !== 'free') return
+  if (!isAutoScroll.value || isAutoScrollBlocked() || rafId || bottomReturnTimer) return
+  startAutoScroll()
 }
 
 const handleUserInteraction = () => {
   isInteracting.value = true
   // 用户接管时立即取消程序化的翻页动画，避免与人争抢滚动
   cancelAnimationFrame(animId)
+  animId = null
+  stopFreeScrollLoop()
   clearTimeout(pauseTimer)
   if (isAtBottom()) scheduleBottomReturn(true)
-  pauseTimer = setTimeout(() => (isInteracting.value = false), 3000)
+  pauseTimer = setTimeout(() => {
+    isInteracting.value = false
+    maybeResumeFreeScroll()
+  }, 3000)
 }
 
 const sectionEls = () => Array.from(scrollContainerRef.value?.querySelectorAll('.page-section') || [])
@@ -526,7 +604,8 @@ const sectionEls = () => Array.from(scrollContainerRef.value?.querySelectorAll('
 const isAtBottom = () => {
   const el = scrollContainerRef.value
   if (!el) return false
-  const max = maxScrollTop.value || updateScrollMetrics()
+  let max = maxScrollTop.value
+  if (max <= 0) max = updateScrollMetrics()
   return max - el.scrollTop <= 8
 }
 
@@ -540,6 +619,7 @@ const scheduleBottomReturn = (reset = false) => {
   if (!el || !isAtBottom() || !isAutoScroll.value || isAutoScrollBlocked()) return
   if (bottomReturnTimer && !reset) return
   clearBottomReturn()
+  stopFreeScrollLoop()
   bottomReturnTimer = setTimeout(() => {
     bottomReturnTimer = null
     if (!isAtBottom() || !isAutoScroll.value || isAutoScrollBlocked()) return
@@ -551,20 +631,37 @@ const scheduleBottomReturn = (reset = false) => {
   }, BOTTOM_RETURN_DELAY)
 }
 
+const onProgrammaticScrollDone = () => {
+  applyScrollSideEffects()
+  maybeResumeFreeScroll()
+}
+
 // 带时长的平滑滚动（easeInOutQuad），duration 由后台 pageSwitchDuration 控制
 const smoothScrollTo = (target, duration) => {
   const el = scrollContainerRef.value
   if (!el) return
   cancelAnimationFrame(animId)
+  animId = null
   const start = el.scrollTop, dist = target - start
-  if (!dist) return
-  if (duration <= 0) { el.scrollTop = target; return }
+  if (!dist) {
+    onProgrammaticScrollDone()
+    return
+  }
+  if (duration <= 0) {
+    setProgrammaticScrollTop(el, target)
+    onProgrammaticScrollDone()
+    return
+  }
   const t0 = performance.now()
   const tick = (now) => {
     const p = Math.min(1, (now - t0) / duration)
     const e = p < 0.5 ? 2 * p * p : 1 - Math.pow(-2 * p + 2, 2) / 2
-    el.scrollTop = start + dist * e
+    setProgrammaticScrollTop(el, start + dist * e)
     if (p < 1) animId = requestAnimationFrame(tick)
+    else {
+      animId = null
+      onProgrammaticScrollDone()
+    }
   }
   animId = requestAnimationFrame(tick)
 }
@@ -585,40 +682,52 @@ const startAutoScroll = () => {
   clearTimeout(scrollStartTimer)
   clearInterval(snapTimer)
   clearInterval(freeTimer)
-  cancelAnimationFrame(rafId)
-  rafId = null
+  stopFreeScrollLoop()
   if (data.value.scrollMode === 'snap') {
     if (isAutoScroll.value && !isAutoScrollBlocked()) goNextSection()
     snapTimer = setInterval(() => {
       if (isAutoScroll.value && !isAutoScrollBlocked()) goNextSection()
     }, 4500)
-  } else {
-    freeScrollLastTs = 0
-    freeScrollCarry = 0
-    const tickFreeScroll = (now) => {
-      const el = scrollContainerRef.value
-      const dt = freeScrollLastTs ? Math.min(24, now - freeScrollLastTs) : 16.7
-      freeScrollLastTs = now
-      if (el && isAutoScroll.value && !isAutoScrollBlocked()) {
-        const max = maxScrollTop.value || updateScrollMetrics()
-        if (max - el.scrollTop <= 8) {
-          scheduleBottomReturn()
-        } else {
-          freeScrollCarry += FREE_SCROLL_BASE_STEP * (dt / freeInterval.value)
-          if (freeScrollCarry >= 0.35) {
-            const currentTop = el.scrollTop
-            const nextTop = Math.min(max, currentTop + freeScrollCarry)
-            el.scrollTop = nextTop
-            freeScrollCarry = Math.max(0, freeScrollCarry - (nextTop - currentTop))
-            if (freeScrollCarry > 4) freeScrollCarry = 0
-            if (max - nextTop <= 8) scheduleBottomReturn()
-          }
-        }
-      }
+    return
+  }
+  if (!isAutoScroll.value || isAutoScrollBlocked() || bottomReturnTimer) return
+  if (maxScrollTop.value <= 0) updateScrollMetrics()
+  freeScrollLastTs = 0
+  freeScrollCarry = 0
+  const tickFreeScroll = (now) => {
+    const el = scrollContainerRef.value
+    if (!el || !isAutoScroll.value || isAutoScrollBlocked()) {
+      rafId = null
+      return
+    }
+    const dt = freeScrollLastTs ? Math.min(24, now - freeScrollLastTs) : 16.7
+    freeScrollLastTs = now
+    const max = maxScrollTop.value
+    if (max <= 0) {
       rafId = requestAnimationFrame(tickFreeScroll)
+      return
+    }
+    if (max - el.scrollTop <= 8) {
+      scheduleBottomReturn()
+      rafId = null
+      return
+    }
+    freeScrollCarry += FREE_SCROLL_BASE_STEP * (dt / freeInterval.value)
+    if (freeScrollCarry >= 0.35) {
+      const currentTop = el.scrollTop
+      const nextTop = Math.min(max, currentTop + freeScrollCarry)
+      setProgrammaticScrollTop(el, nextTop)
+      freeScrollCarry = Math.max(0, freeScrollCarry - (nextTop - currentTop))
+      if (freeScrollCarry > 4) freeScrollCarry = 0
+      if (max - nextTop <= 8) {
+        scheduleBottomReturn()
+        rafId = null
+        return
+      }
     }
     rafId = requestAnimationFrame(tickFreeScroll)
   }
+  rafId = requestAnimationFrame(tickFreeScroll)
 }
 
 const scheduleAutoScrollStart = () => {
@@ -635,8 +744,15 @@ const completeIntro = () => {
 
 const toggleAutoScroll = () => {
   isAutoScroll.value = !isAutoScroll.value
-  if (isAutoScroll.value && isAtBottom()) scheduleBottomReturn(true)
-  if (!isAutoScroll.value) clearBottomReturn()
+  if (!isAutoScroll.value) {
+    clearBottomReturn()
+    stopFreeScrollLoop()
+    cancelAnimationFrame(animId)
+    animId = null
+    return
+  }
+  if (isAtBottom()) scheduleBottomReturn(true)
+  else startAutoScroll()
 }
 
 // 入场揭幕：开门动画
@@ -726,6 +842,14 @@ onMounted(async () => {
   scheduleScrollMetricsUpdate()
   window.addEventListener('resize', scheduleScrollMetricsUpdate, { passive: true })
 
+  if (calendarPageRef.value) {
+    calendarRoughObserver = new IntersectionObserver(
+      ([entry]) => { calendarRoughActive.value = !!entry?.isIntersecting },
+      { root: scrollContainerRef.value, rootMargin: '20% 0px', threshold: 0.01 }
+    )
+    calendarRoughObserver.observe(calendarPageRef.value)
+  }
+
   if (data.value.introEnabled) showIntro.value = true
 
   audio.setTracks(data.value.musicList, data.value.activeMusicUrl)
@@ -744,19 +868,29 @@ onMounted(async () => {
 })
 
 onUnmounted(() => {
-  cancelAnimationFrame(rafId)
+  stopFreeScrollLoop()
   cancelAnimationFrame(animId)
   cancelAnimationFrame(metricsRaf)
+  clearTimeout(metricsDebounceTimer)
   clearInterval(snapTimer)
   clearInterval(freeTimer)
   clearTimeout(pauseTimer)
   clearTimeout(introTimer)
   clearTimeout(scrollStartTimer)
   clearBottomReturn()
+  calendarRoughObserver?.disconnect()
+  calendarRoughObserver = null
   window.removeEventListener('resize', scheduleScrollMetricsUpdate)
 })
 
 watch(freeScrollSignature, restartAutoScroll)
+watch(
+  () => [isDrawerOpen.value, previewVisible.value, showMapOptions.value],
+  () => {
+    if (isAutoScrollBlocked()) stopFreeScrollLoop()
+    else maybeResumeFreeScroll()
+  }
+)
 </script>
 
 <style scoped>
@@ -808,7 +942,15 @@ watch(freeScrollSignature, restartAutoScroll)
   line-height: 1.8;
   font-weight: 700;
 }
-.page-section { min-height: 100vh; width: 100%; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; }
+.page-section {
+  min-height: 100vh;
+  width: 100%;
+  position: relative;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+}
 .no-scrollbar::-webkit-scrollbar { display: none; }
 /* 花瓣形状由 SVG 决定，无需额外形状样式 */
 
diff --git a/vite-tailwindcss/vite.config.js b/vite-tailwindcss/vite.config.js
index b58ddf8..006d14a 100644
--- a/vite-tailwindcss/vite.config.js
+++ b/vite-tailwindcss/vite.config.js
@@ -19,7 +19,7 @@ export default defineConfig({
         proxy: {
             // 婚礼纪 Go 后端运行在 :8080，接口统一以 /api 开头，无需重写
             '/api': {
-                target: 'http://127.0.0.1:8080',
+                target: 'http://127.0.0.1:15201',
                 changeOrigin: true
             }
         }