diff --git a/vite-tailwindcss/src/components/PhotoGallery.vue b/vite-tailwindcss/src/components/PhotoGallery.vue
index 75eddb8..58d3f2a 100644
--- a/vite-tailwindcss/src/components/PhotoGallery.vue
+++ b/vite-tailwindcss/src/components/PhotoGallery.vue
@@ -27,27 +27,62 @@
       </div>
     </div>
 
-    <!-- 一大五小 -->
-    <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])" />
+    <!-- 一大五小：固定 6 槽占位 + 串行填内容（大图 decode 后再挂小图） -->
+    <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
+        class="col-span-2 row-span-2 relative olfs-slot"
+        :class="{ 'olfs-placeholder': shownCount < 1 }"
+      >
+        <div
+          v-if="shownCount >= 1"
+          v-reveal="{ variant: 'up', immediate: true }"
+          class="absolute inset-0"
+          :class="frameClass"
+        >
+          <img
+            ref="olfsLargeImgRef"
+            :src="page.images[0]"
+            class="preview-img olfs-img"
+            decoding="async"
+            @click.stop="previewImage(page.images[0])"
+          />
+        </div>
       </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])" />
+      <div
+        v-for="i in [1, 2, 3, 4, 5]"
+        :key="i"
+        class="relative olfs-slot"
+        :class="{ 'olfs-placeholder': shownCount <= i }"
+      >
+        <div
+          v-if="shownCount > i"
+          v-reveal="{ variant: 'up', immediate: true }"
+          class="absolute inset-0"
+          :class="frameClass"
+        >
+          <img
+            :src="page.images[i]"
+            class="preview-img olfs-img"
+            decoding="async"
+            @click.stop="previewImage(page.images[i])"
+          />
+        </div>
       </div>
     </div>
 
-    <!-- 九宫格：串行挂载，每 300ms 仅 1 格 v-reveal（不预挂九格观察器） -->
+    <!-- 九宫格：串行挂载 + immediate（由父级 activate 触发） -->
     <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"
         class="aspect-square relative nine-grid-slot"
-        :class="{ 'nine-grid-placeholder': imgIdx >= nineShownCount }"
+        :class="{ 'nine-grid-placeholder': imgIdx >= shownCount }"
       >
         <div
-          v-if="imgIdx < nineShownCount && nineGridAnimate"
+          v-if="imgIdx < shownCount && nineGridAnimate"
           v-reveal="getRevealConfig(imgIdx)"
           class="absolute inset-0"
           :class="frameClass"
@@ -60,7 +95,7 @@
           />
         </div>
         <div
-          v-else-if="imgIdx < nineShownCount"
+          v-else-if="imgIdx < shownCount"
           class="absolute inset-0"
           :class="frameClass"
         >
@@ -75,11 +110,20 @@
       </div>
     </div>
 
-    <!-- 瀑布流 -->
-    <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)" />
+    <!-- 瀑布流：串行挂载 + immediate -->
+    <div v-else-if="page.type === 'masonry'" ref="multiRootRef" class="g-masonry mt-6 px-1">
+      <div
+        v-for="(img, imgIdx) in (page.images || [])"
+        :key="imgIdx"
+      >
+        <div
+          v-if="imgIdx < shownCount"
+          v-reveal="{ variant: 'up', immediate: true }"
+          class="g-masonry-item"
+          :class="frameClass"
+        >
+          <img :src="img" class="preview-img" decoding="async" @click.stop="previewImage(img)" />
+        </div>
       </div>
     </div>
 
@@ -98,11 +142,20 @@
       </div>
     </div>
 
-    <!-- 拍立得拼贴 -->
-    <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)" />
+    <!-- 拍立得：串行挂载 + immediate -->
+    <div v-else-if="page.type === 'polaroid'" ref="multiRootRef" class="g-polaroid mt-6">
+      <div
+        v-for="(img, imgIdx) in (page.images || [])"
+        :key="imgIdx"
+      >
+        <div
+          v-if="imgIdx < shownCount"
+          v-reveal="{ variant: 'scale', immediate: true }"
+          class="g-polaroid-item"
+          :style="{ transform: polaroidTransform(imgIdx) }"
+        >
+          <img :src="img" class="preview-img" decoding="async" @click.stop="previewImage(img)" />
+        </div>
       </div>
     </div>
 
@@ -113,29 +166,66 @@
 <script setup>
 import { ref, computed, watch, nextTick, onMounted, onUnmounted } from 'vue'
 import { borderClass } from '@/composables/borderStyles'
+import { createSequentialMount } from '@/composables/useSequentialMount'
 
-const STEP_MS = 300
-const SETTLE_MS = 400
+const NINE_STEP_MS = 300
+const NINE_SETTLE_MS = 400
+const MULTI_STEP_MS = 220
+const MULTI_SETTLE_MS = 300
+const OLFS_STEP_MS = 300
+const OLFS_SETTLE_MS = 320
+const OLFS_DECODE_TIMEOUT_MS = 1200
+
+/** 瀑布流/拍立得仍自观测；九宫格/一大五小由父级 activate+停滚驱动 */
+const SEQUENTIAL_SELF_TYPES = new Set(['masonry', 'polaroid'])
+const HOLD_ACTIVATE_TYPES = new Set(['nine-grid', 'one-large-five-small'])
 
 const props = defineProps({
   page: { type: Object, required: true },
-  /** 九宫格专用：父级在 section 入视口后设为 true 才挂载展示 */
+  /** 九宫格/一大五小：父级停滚后设为 true 才串行挂载 */
   activate: { type: Boolean, default: false },
-  /** 开启：串行 v-reveal；关闭：预加载后直接展示 */
+  /** 九宫格：开启串行 v-reveal；关闭则一次展示 */
   nineGridAnimate: { type: Boolean, default: false },
 })
 const emit = defineEmits(['preview-image', 'ready'])
 
-const nineShownCount = ref(0)
+const shownCount = ref(0)
+const multiRootRef = ref(null)
+const olfsLargeImgRef = ref(null)
 let readyEmitted = false
 let preloadStarted = false
-let seqToken = 0
+let multiObserver = null
+let multiStarted = false
+let olfsToken = 0
 
+const seq = createSequentialMount()
 const frameClass = computed(() => borderClass(props.page.borderStyle))
 
 const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms))
 
-/** 关闭动画时提前暖缓存 */
+const waitImgReady = (img, timeoutMs) => {
+  if (!img) return Promise.resolve()
+  const decode = () => {
+    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 })
+    })
+  }
+  return Promise.race([
+    decode(),
+    new Promise((resolve) => setTimeout(resolve, timeoutMs)),
+  ])
+}
+
+const emitReady = () => {
+  if (readyEmitted) return
+  readyEmitted = true
+  emit('ready')
+}
+
+/** 关闭九宫格动画时提前暖缓存 */
 const preloadNineGridImages = () => {
   if (preloadStarted || props.nineGridAnimate || props.page?.type !== 'nine-grid') return
   const urls = (props.page.images || []).filter(Boolean)
@@ -148,69 +238,153 @@ const preloadNineGridImages = () => {
   }
 }
 
-const emitReady = () => {
-  if (readyEmitted) return
-  readyEmitted = true
-  emit('ready')
+const runNineSequential = async () => {
+  const total = (props.page.images || []).length
+  const { cancelled } = await seq.run({
+    total,
+    stepMs: NINE_STEP_MS,
+    settleMs: NINE_SETTLE_MS,
+    setCount: (n) => { shownCount.value = n },
+  })
+  if (!cancelled) emitReady()
 }
 
-/** 每 300ms 只挂载 1 格并触发单格 v-reveal */
-const runSequentialReveal = async () => {
-  const token = ++seqToken
-  const total = (props.page.images || []).length
+const showNineInstant = async () => {
+  shownCount.value = (props.page.images || []).length
+  await nextTick()
+  emitReady()
+}
+
+/** 一大五小：先大图并等 decode，再慢挂小图 */
+const runOlfsSequential = async () => {
+  const token = ++olfsToken
+  const total = Math.min(6, (props.page.images || []).length)
   if (!total) {
     emitReady()
     return
   }
 
-  nineShownCount.value = 0
+  shownCount.value = 0
   await nextTick()
+  if (token !== olfsToken) return
 
-  for (let i = 0; i < total; i += 1) {
-    if (token !== seqToken) return
-    await sleep(STEP_MS)
-    if (token !== seqToken) return
-    nineShownCount.value = i + 1
+  await sleep(OLFS_STEP_MS)
+  if (token !== olfsToken) return
+  shownCount.value = 1
+  await nextTick()
+  await waitImgReady(olfsLargeImgRef.value, OLFS_DECODE_TIMEOUT_MS)
+  if (token !== olfsToken) return
+
+  for (let n = 2; n <= total; n += 1) {
+    await sleep(OLFS_STEP_MS)
+    if (token !== olfsToken) return
+    shownCount.value = n
     await nextTick()
   }
 
-  if (token !== seqToken) return
-  await sleep(SETTLE_MS)
-  if (token !== seqToken) return
+  if (token !== olfsToken) return
+  await sleep(OLFS_SETTLE_MS)
   emitReady()
 }
 
-const showNineGridInstant = async () => {
+const runMultiSequential = async () => {
+  const type = props.page?.type
+  if (!SEQUENTIAL_SELF_TYPES.has(type) || multiStarted) return
+  multiStarted = true
   const total = (props.page.images || []).length
-  nineShownCount.value = total
+  await seq.run({
+    total,
+    stepMs: MULTI_STEP_MS,
+    settleMs: MULTI_SETTLE_MS,
+    setCount: (n) => { shownCount.value = n },
+  })
+}
+
+const unbindMultiObserver = () => {
+  multiObserver?.disconnect()
+  multiObserver = null
+}
+
+const bindMultiObserver = async () => {
+  unbindMultiObserver()
+  if (!SEQUENTIAL_SELF_TYPES.has(props.page?.type)) return
   await nextTick()
-  emitReady()
+  const el = multiRootRef.value
+  if (!el || typeof IntersectionObserver === 'undefined') {
+    // 无观察器时直接串行，避免永不出现
+    if (!multiStarted) runMultiSequential()
+    return
+  }
+  // 露出约 30% 再串行，避免进屏前播完
+  multiObserver = new IntersectionObserver(
+    (entries) => {
+      for (const entry of entries) {
+        if (!entry.isIntersecting || entry.intersectionRatio < 0.3) continue
+        multiObserver?.disconnect()
+        multiObserver = null
+        runMultiSequential()
+        break
+      }
+    },
+    { threshold: [0.3, 0.5, 0.7], rootMargin: '0px' }
+  )
+  multiObserver.observe(el)
 }
 
 watch(
-  () => props.activate && props.page?.type === 'nine-grid',
+  () => props.activate && HOLD_ACTIVATE_TYPES.has(props.page?.type),
   async (on) => {
     if (!on || readyEmitted) return
-    if (props.nineGridAnimate) await runSequentialReveal()
-    else await showNineGridInstant()
+    const type = props.page?.type
+    if (type === 'nine-grid') {
+      if (props.nineGridAnimate) await runNineSequential()
+      else await showNineInstant()
+      return
+    }
+    if (type === 'one-large-five-small') {
+      await runOlfsSequential()
+    }
   },
   { flush: 'post' }
 )
 
 watch(
-  () => [props.page?.type, props.nineGridAnimate, props.page?.images],
+  () => [props.page?.type, props.page?.images],
+  async () => {
+    seq.cancel()
+    olfsToken += 1
+    unbindMultiObserver()
+    multiStarted = false
+    shownCount.value = 0
+    readyEmitted = false
+    if (props.page?.type === 'nine-grid') {
+      if (!props.nineGridAnimate) preloadNineGridImages()
+      return
+    }
+    if (props.page?.type === 'one-large-five-small') return
+    if (SEQUENTIAL_SELF_TYPES.has(props.page?.type)) {
+      await bindMultiObserver()
+    }
+  },
+  { deep: true, flush: 'post' }
+)
+
+watch(
+  () => props.nineGridAnimate,
   () => {
     if (!props.nineGridAnimate) preloadNineGridImages()
-  },
-  { deep: true }
+  }
 )
 
 onMounted(() => {
   if (!props.nineGridAnimate) preloadNineGridImages()
+  if (SEQUENTIAL_SELF_TYPES.has(props.page?.type)) bindMultiObserver()
 })
 
 onUnmounted(() => {
-  seqToken += 1
+  seq.cancel()
+  olfsToken += 1
+  unbindMultiObserver()
 })
 
 function getRevealConfig(imgIdx) {
@@ -218,17 +392,19 @@ function getRevealConfig(imgIdx) {
   const col = imgIdx % 3
 
   if (imgIdx === 4) {
-    return { variant: 'scale', delay: 0 }
+    return { variant: 'scale', delay: 0, immediate: true }
   }
   if (col === 1) {
     return {
       variant: row === 0 ? 'down' : 'up',
       delay: 0,
+      immediate: true,
     }
   }
   return {
     variant: col === 0 ? 'left' : 'right',
     delay: 0,
+    immediate: true,
   }
 }
 
@@ -303,6 +479,22 @@ function polaroidTransform(i) {
   border: none !important;
   box-shadow: none !important;
 }
+.olfs-slot {
+  min-width: 0;
+  min-height: 0;
+  contain: layout paint;
+}
+.olfs-placeholder {
+  visibility: hidden;
+  pointer-events: none;
+  background: transparent !important;
+}
+.olfs-img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  display: block;
+}
 
 .overlap-wrap {
   width: 100%;
diff --git a/vite-tailwindcss/src/composables/useSequentialMount.js b/vite-tailwindcss/src/composables/useSequentialMount.js
new file mode 100644
index 0000000..fda8cf2
--- /dev/null
+++ b/vite-tailwindcss/src/composables/useSequentialMount.js
@@ -0,0 +1,45 @@
+import { nextTick } from 'vue'
+
+const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms))
+
+/**
+ * 串行挂载：每隔 stepMs 增加 1 个可见项，避免同时挂大量观察器/解码。
+ */
+export function createSequentialMount() {
+  let token = 0
+
+  const cancel = () => {
+    token += 1
+  }
+
+  /**
+   * @param {{ total: number, stepMs?: number, settleMs?: number, setCount: (n: number) => void }} opts
+   * @returns {Promise<{ cancelled: boolean }>}
+   */
+  const run = async ({ total, stepMs = 220, settleMs = 300, setCount }) => {
+    const t = ++token
+    const n = Math.max(0, Number(total) || 0)
+    setCount(0)
+    await nextTick()
+    if (t !== token) return { cancelled: true }
+
+    if (!n) return { cancelled: false }
+
+    for (let i = 0; i < n; i += 1) {
+      if (t !== token) return { cancelled: true }
+      await sleep(stepMs)
+      if (t !== token) return { cancelled: true }
+      setCount(i + 1)
+      await nextTick()
+    }
+
+    if (t !== token) return { cancelled: true }
+    if (settleMs > 0) {
+      await sleep(settleMs)
+      if (t !== token) return { cancelled: true }
+    }
+    return { cancelled: false }
+  }
+
+  return { run, cancel }
+}
diff --git a/vite-tailwindcss/src/directives/reveal.js b/vite-tailwindcss/src/directives/reveal.js
index 2bb81cc..216ba9b 100644
--- a/vite-tailwindcss/src/directives/reveal.js
+++ b/vite-tailwindcss/src/directives/reveal.js
@@ -5,6 +5,7 @@
  *   v-reveal                  -> 默认向上淡入
  *   v-reveal="'left'"         -> 从左侧滑入
  *   v-reveal="{ variant: 'scale', delay: 200 }"
+ *   v-reveal="{ variant: 'up', immediate: true }"  -> 不建观察器，下一帧直接入场（串行挂载用）
  *
  * 支持的 variant: up | down | left | right | scale | blur
  */
@@ -18,22 +19,41 @@ const VARIANTS = {
 }
 
 function parseBinding(value) {
-  if (!value) return { variant: 'up', delay: 0 }
-  if (typeof value === 'string') return { variant: value, delay: 0 }
+  if (!value) return { variant: 'up', delay: 0, immediate: false }
+  if (typeof value === 'string') return { variant: value, delay: 0, immediate: false }
   return {
     variant: value.variant || 'up',
     delay: value.delay || 0,
+    immediate: !!value.immediate,
   }
 }
 
 const reveal = {
   mounted(el, binding) {
-    const { variant, delay } = parseBinding(binding.value)
+    // false：跳过入场（同模板不挂观察器）
+    if (binding.value === false) return
+
+    const { variant, delay, immediate } = parseBinding(binding.value)
     el.classList.add('reveal')
     el.classList.add(VARIANTS[variant] || 'reveal-up')
     if (delay) el.style.transitionDelay = `${delay}ms`
 
-    // 已处于视口（如首屏）时立即显示，避免永远不可见
+    // 串行挂载场景：父级已保证在视口内，免 IntersectionObserver
+    if (immediate) {
+      const kick = () => el.classList.add('reveal--in')
+      if (typeof requestAnimationFrame === 'function') {
+        el.__revealRaf = requestAnimationFrame(() => {
+          el.__revealRaf = requestAnimationFrame(() => {
+            el.__revealRaf = 0
+            kick()
+          })
+        })
+      } else {
+        el.__revealTimer = setTimeout(kick, 16)
+      }
+      return
+    }
+
     const observer = new IntersectionObserver(
       ([entry]) => {
         if (entry.isIntersecting) {
@@ -51,6 +71,14 @@ const reveal = {
       el.__revealObserver.disconnect()
       delete el.__revealObserver
     }
+    if (el.__revealRaf) {
+      cancelAnimationFrame(el.__revealRaf)
+      el.__revealRaf = 0
+    }
+    if (el.__revealTimer) {
+      clearTimeout(el.__revealTimer)
+      el.__revealTimer = 0
+    }
   },
 }
 
diff --git a/vite-tailwindcss/src/views/index/index.vue b/vite-tailwindcss/src/views/index/index.vue
index dbb5a37..71232a4 100644
--- a/vite-tailwindcss/src/views/index/index.vue
+++ b/vite-tailwindcss/src/views/index/index.vue
@@ -43,8 +43,16 @@
       :active="effectsActive"
     />
 
-    <!-- 顶部滚动进度条 -->
-    <div class="fixed top-0 left-0 h-[2px] bg-[#a88c6b] z-[55] transition-[width] duration-150" :style="{ width: progress * 100 + '%' }"></div>
+    <!-- 顶部滚动进度条（transform 驱动，避免 width/left 强制重排） -->
+    <div
+      class="scroll-progress"
+      aria-hidden="true"
+      :style="{ '--scroll-p': String(Math.min(1, Math.max(0, progress))) }"
+    >
+      <div class="scroll-progress-track" />
+      <div class="scroll-progress-fill" />
+      <span class="scroll-progress-xi calligraphy">囍</span>
+    </div>
 
     <!-- 右上角：自动滚动 -->
     <div class="fixed top-6 right-5 z-50 flex flex-col items-end gap-4">
@@ -110,11 +118,15 @@
             title="打开播放器"
             @click="openPlayerPanel"
           >
+            <span class="vinyl-rim" aria-hidden="true" />
             <span class="vinyl-grooves" aria-hidden="true" />
+            <span class="vinyl-sheen" aria-hidden="true" />
+            <span class="vinyl-label-ring" aria-hidden="true" />
             <span
               class="vinyl-label"
               :style="audio.currentCover.value ? { backgroundImage: `url(${audio.currentCover.value})` } : undefined"
             />
+            <span class="vinyl-spindle" aria-hidden="true" />
           </button>
           <button
             type="button"
@@ -298,17 +310,17 @@
            class="page-section p-6 relative"
            :class="data.scrollMode === 'snap' ? 'snap-start' : ''"
            :style="pageHeightStyle(page)"
-           :data-nine-grid="page.type === 'nine-grid' ? String(pIdx) : undefined">
+           :data-gallery-hold="isHoldGalleryType(page.type) ? String(pIdx) : undefined">
         <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"
-            :activate="page.type === 'nine-grid' ? !!nineGridActivate[pIdx] : false"
+            :activate="isHoldGalleryType(page.type) ? !!galleryActivate[pIdx] : false"
             :nine-grid-animate="!!data.nineGridAnimate"
             @preview-image="openImagePreview"
-            @ready="onNineGridReady(pIdx)"
+            @ready="onGalleryReady(pIdx)"
           />
         </div>
       </div>
@@ -732,8 +744,11 @@ const likeBusy = ref(false)
 let likePulseTimer = null
 const previewVisible = ref(false), previewIndex = ref(0), albumLoaded = ref(false)
 const albumPreviewImages = ref([])
-const nineGridActivate = reactive({})
-const nineGridHold = ref(false)
+/** 九宫格 / 一大五小：进视口中线后停滚再串行加载 */
+const HOLD_GALLERY_TYPES = new Set(['nine-grid', 'one-large-five-small'])
+const isHoldGalleryType = (type) => HOLD_GALLERY_TYPES.has(type)
+const galleryActivate = reactive({})
+const galleryHold = ref(false)
 const rsvpForm = reactive({ name: '', guest_count: '1', wishes: '' })
 const blessingForm = reactive({ name: '', content: '', color: DEFAULT_DANMAKU_COLOR })
 const danmakuColorOptions = DANMAKU_COLORS
@@ -773,13 +788,13 @@ const scheduleBlessingAutoClose = () => {
 
 let rafId = null, snapTimer = null, pauseTimer = null, introTimer = null, freeTimer = null, animId = null, scrollStartTimer = null, bottomReturnTimer = null
 let freeScrollLastTs = 0
-let nineGridObserver = null
-let nineGridRevealTimer = null
-const nineGridDone = new Set()
+let galleryObserver = null
+let galleryRevealTimer = null
+const galleryDone = new Set()
 const BOTTOM_RETURN_DELAY = 30000
 const FREE_SCROLL_BASE_STEP = 1.2
 /** ready 后极短缓冲再恢复滚动（串行等待已在 PhotoGallery 内完成） */
-const NINE_GRID_RESUME_DELAY_MS = 200
+const GALLERY_RESUME_DELAY_MS = 200
 
 const freeInterval = computed(() => {
   const v = Number(data.value.freeScrollInterval)
@@ -915,12 +930,25 @@ const effectsActive = computed(() =>
 
 const closeDrawer = () => { isDrawerOpen.value = false }
 const pageScrollTop = () => window.scrollY || document.documentElement.scrollTop || document.body.scrollTop || 0
-const pageScrollMax = () => Math.max(0, document.documentElement.scrollHeight - window.innerHeight)
+/** 缓存文档高度，避免每次 scroll 读 scrollHeight 触发强制重排 */
+let cachedScrollMax = 0
+let scrollRaf = 0
+const refreshScrollMax = () => {
+  cachedScrollMax = Math.max(0, document.documentElement.scrollHeight - window.innerHeight)
+  return cachedScrollMax
+}
+const pageScrollMax = () => (cachedScrollMax > 0 ? cachedScrollMax : refreshScrollMax())
+
 const handleScroll = () => {
-  const max = pageScrollMax()
-  progress.value = max > 0 ? pageScrollTop() / max : 0
-  if (isAtBottom()) scheduleBottomReturn()
-  else clearBottomReturn()
+  if (scrollRaf) return
+  scrollRaf = requestAnimationFrame(() => {
+    scrollRaf = 0
+    const max = pageScrollMax()
+    const top = pageScrollTop()
+    progress.value = max > 0 ? top / max : 0
+    if (max - top <= 8) scheduleBottomReturn()
+    else clearBottomReturn()
+  })
 }
 
 const handleUserInteraction = () => {
@@ -932,7 +960,10 @@ const handleUserInteraction = () => {
 }
 
 const sectionEls = () => Array.from(scrollContainerRef.value?.querySelectorAll('.page-section') || [])
-const isAtBottom = () => pageScrollMax() - pageScrollTop() <= 8
+const isAtBottom = () => {
+  const max = pageScrollMax()
+  return max - pageScrollTop() <= 8
+}
 
 const clearBottomReturn = () => {
   clearTimeout(bottomReturnTimer)
@@ -987,45 +1018,51 @@ const canAutoAdvance = () =>
   && !previewVisible.value
   && !showMapOptions.value
   && !showOpenInBrowser.value
-  && !nineGridHold.value
+  && !galleryHold.value
 
-const beginNineGridGate = (pIdx) => {
-  if (nineGridDone.has(pIdx)) return
-  nineGridDone.add(pIdx)
-  nineGridHold.value = true
-  nineGridActivate[pIdx] = true
+const beginGalleryGate = (pIdx) => {
+  if (galleryDone.has(pIdx)) return
+  galleryDone.add(pIdx)
+  galleryHold.value = true
+  galleryActivate[pIdx] = true
 }
 
-const onNineGridReady = (pIdx) => {
-  if (!nineGridDone.has(pIdx)) return
-  clearTimeout(nineGridRevealTimer)
-  nineGridRevealTimer = setTimeout(() => {
-    nineGridHold.value = false
-    nineGridRevealTimer = null
-  }, NINE_GRID_RESUME_DELAY_MS)
+const onGalleryReady = (pIdx) => {
+  if (!galleryDone.has(pIdx)) return
+  refreshScrollMax()
+  clearTimeout(galleryRevealTimer)
+  galleryRevealTimer = setTimeout(() => {
+    galleryHold.value = false
+    galleryRevealTimer = null
+  }, GALLERY_RESUME_DELAY_MS)
 }
 
-const bindNineGridObserver = () => {
-  nineGridObserver?.disconnect()
-  nineGridObserver = null
+const bindGalleryHoldObserver = () => {
+  galleryObserver?.disconnect()
+  galleryObserver = null
   if (typeof IntersectionObserver === 'undefined') return
-  const nodes = scrollContainerRef.value?.querySelectorAll('[data-nine-grid]')
+  const nodes = scrollContainerRef.value?.querySelectorAll('[data-gallery-hold]')
   if (!nodes?.length) return
-  // 进入窗口即 activate；期间 nineGridHold 暂停自动滚
-  nineGridObserver = new IntersectionObserver(
+  // 区块抵达「自下而上 75%」线后再停滚+activate（= 距视口顶 25%）
+  galleryObserver = new IntersectionObserver(
     (entries) => {
+      const vh = window.innerHeight || 1
+      const lineY = vh * (1 - 0.75) // 从下往上 75%
       for (const entry of entries) {
         if (!entry.isIntersecting) continue
-        const raw = entry.target.getAttribute('data-nine-grid')
+        const rect = entry.boundingClientRect
+        // 区块跨越该水平线
+        if (rect.top > lineY || rect.bottom < lineY) continue
+        const raw = entry.target.getAttribute('data-gallery-hold')
         if (raw == null) continue
         const pIdx = Number(raw)
-        if (!Number.isFinite(pIdx) || nineGridDone.has(pIdx)) continue
-        beginNineGridGate(pIdx)
+        if (!Number.isFinite(pIdx) || galleryDone.has(pIdx)) continue
+        beginGalleryGate(pIdx)
       }
     },
-    { threshold: [0, 0.08, 0.2], rootMargin: '120px 0px' }
+    { threshold: [0, 0.1, 0.25, 0.5, 0.75, 1], rootMargin: '0px' }
   )
-  nodes.forEach((el) => nineGridObserver.observe(el))
+  nodes.forEach((el) => galleryObserver.observe(el))
 }
 
 const startAutoScroll = () => {
@@ -1045,11 +1082,12 @@ const startAutoScroll = () => {
       const dt = freeScrollLastTs ? Math.min(34, now - freeScrollLastTs) : 16.7
       freeScrollLastTs = now
       if (canAutoAdvance()) {
-        if (isAtBottom()) {
+        const top = pageScrollTop()
+        const max = pageScrollMax()
+        if (max - top <= 8) {
           scheduleBottomReturn()
         } else {
-          window.scrollTo(0, pageScrollTop() + FREE_SCROLL_BASE_STEP * (dt / freeInterval.value))
-          if (isAtBottom()) scheduleBottomReturn()
+          window.scrollTo(0, top + FREE_SCROLL_BASE_STEP * (dt / freeInterval.value))
         }
       }
       rafId = requestAnimationFrame(tickFreeScroll)
@@ -1288,18 +1326,23 @@ onMounted(async () => {
   }
 
   await nextTick()
-  bindNineGridObserver()
+  bindGalleryHoldObserver()
+  refreshScrollMax()
   window.addEventListener('scroll', handleScroll, { passive: true })
+  window.addEventListener('resize', refreshScrollMax, { passive: true })
   handleScroll()
 })
 
 onUnmounted(() => {
   document.documentElement.classList.remove('page-scroll-snap')
   window.removeEventListener('scroll', handleScroll)
-  nineGridObserver?.disconnect()
-  nineGridObserver = null
-  clearTimeout(nineGridRevealTimer)
-  nineGridRevealTimer = null
+  window.removeEventListener('resize', refreshScrollMax)
+  galleryObserver?.disconnect()
+  galleryObserver = null
+  clearTimeout(galleryRevealTimer)
+  galleryRevealTimer = null
+  cancelAnimationFrame(scrollRaf)
+  scrollRaf = 0
   cancelAnimationFrame(rafId)
   cancelAnimationFrame(animId)
   clearInterval(snapTimer)
@@ -1316,7 +1359,8 @@ watch(
   () => data.value.photoPages,
   async () => {
     await nextTick()
-    bindNineGridObserver()
+    bindGalleryHoldObserver()
+    refreshScrollMax()
   },
   { deep: true }
 )
@@ -1324,7 +1368,7 @@ watch(
   () => data.value.nineGridAnimate,
   async () => {
     await nextTick()
-    bindNineGridObserver()
+    bindGalleryHoldObserver()
   }
 )
 watch(freeScrollSignature, restartAutoScroll)
@@ -1486,29 +1530,105 @@ watch(
 .vinyl-wrap {
   position: relative;
   flex: 0 0 auto;
-  width: 52px;
-  height: 52px;
+  width: 54px;
+  height: 54px;
 }
 .vinyl-disc {
-  width: 52px;
-  height: 52px;
+  width: 54px;
+  height: 54px;
   border-radius: 999px;
   position: relative;
   overflow: hidden;
-  border: 1px solid rgba(60, 45, 30, 0.35);
+  border: none;
   background:
-    radial-gradient(circle at center, rgba(40, 30, 22, 0.2) 0 14%, transparent 15%),
-    repeating-radial-gradient(circle at center, #2a2118 0 1px, #3a2f24 1px 3px);
-  box-shadow: 0 6px 16px rgba(60, 45, 30, 0.22);
+    radial-gradient(circle at 50% 50%, #1a1410 0 6%, transparent 6.2%),
+    radial-gradient(circle at 32% 28%, rgba(255, 240, 220, 0.14) 0 10%, transparent 28%),
+    repeating-radial-gradient(
+      circle at center,
+      #1e1813 0 0.6px,
+      #2c241c 0.6px 1.4px,
+      #241c16 1.4px 2.2px,
+      #332a21 2.2px 3px
+    );
+  box-shadow:
+    0 0 0 1px rgba(90, 70, 50, 0.45),
+    0 0 0 2px rgba(30, 22, 16, 0.55),
+    inset 0 0 0 1px rgba(255, 255, 255, 0.06),
+    0 7px 18px rgba(40, 28, 18, 0.32);
 }
 .vinyl-disc.spinning { animation: vinyl-spin 4.8s linear infinite; }
-.vinyl-grooves { position: absolute; inset: 0; opacity: 0.35; pointer-events: none; }
+.vinyl-rim {
+  position: absolute;
+  inset: 0;
+  border-radius: 999px;
+  box-shadow:
+    inset 0 0 0 1.5px rgba(180, 150, 110, 0.22),
+    inset 0 0 10px rgba(0, 0, 0, 0.35);
+  pointer-events: none;
+}
+.vinyl-grooves {
+  position: absolute;
+  inset: 8%;
+  border-radius: 999px;
+  opacity: 0.55;
+  pointer-events: none;
+  background:
+    repeating-radial-gradient(
+      circle at center,
+      transparent 0 1.5px,
+      rgba(255, 245, 230, 0.045) 1.5px 1.9px,
+      transparent 1.9px 3.4px,
+      rgba(0, 0, 0, 0.18) 3.4px 3.8px
+    );
+  mask-image: radial-gradient(circle at center, transparent 0 26%, #000 28% 92%, transparent 94%);
+  -webkit-mask-image: radial-gradient(circle at center, transparent 0 26%, #000 28% 92%, transparent 94%);
+}
+.vinyl-sheen {
+  position: absolute;
+  inset: 0;
+  border-radius: 999px;
+  pointer-events: none;
+  background: linear-gradient(
+    125deg,
+    rgba(255, 255, 255, 0.22) 0%,
+    rgba(255, 255, 255, 0) 28%,
+    rgba(255, 255, 255, 0) 58%,
+    rgba(255, 255, 255, 0.08) 100%
+  );
+  mix-blend-mode: soft-light;
+}
+.vinyl-label-ring {
+  position: absolute;
+  inset: 25%;
+  border-radius: 999px;
+  pointer-events: none;
+  box-shadow:
+    0 0 0 1px rgba(212, 180, 140, 0.35),
+    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
+}
 .vinyl-label {
   position: absolute;
   inset: 28%;
   border-radius: 999px;
-  background: #c4a484 center/cover no-repeat;
-  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.25);
+  background:
+    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.2), transparent 42%),
+    #c4a484 center/cover no-repeat;
+  box-shadow:
+    inset 0 0 0 1px rgba(255, 255, 255, 0.28),
+    0 1px 3px rgba(0, 0, 0, 0.25);
+}
+.vinyl-spindle {
+  position: absolute;
+  left: 50%;
+  top: 50%;
+  width: 5px;
+  height: 5px;
+  margin: -2.5px 0 0 -2.5px;
+  border-radius: 999px;
+  background: radial-gradient(circle at 35% 30%, #f0e0c8, #8a704f 70%, #5c4a35);
+  box-shadow: 0 0 0 1px rgba(40, 28, 18, 0.35);
+  pointer-events: none;
+  z-index: 2;
 }
 .vinyl-play-fab {
   position: absolute;
@@ -1527,6 +1647,57 @@ watch(
   z-index: 2;
 }
 .vinyl-play-fab .fa-play { margin-left: 1px; }
+
+.scroll-progress {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  height: 10px;
+  z-index: 55;
+  pointer-events: none;
+}
+.scroll-progress-track {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  height: 3px;
+  background: linear-gradient(
+    90deg,
+    rgba(168, 140, 107, 0.08),
+    rgba(168, 140, 107, 0.18),
+    rgba(168, 140, 107, 0.08)
+  );
+  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.35);
+}
+.scroll-progress-fill {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 3px;
+  background: linear-gradient(90deg, #d4b48a 0%, #a88c6b 55%, #8a704f 100%);
+  box-shadow: 0 0 8px rgba(168, 140, 107, 0.45);
+  transform: scaleX(var(--scroll-p, 0));
+  transform-origin: left center;
+  will-change: transform;
+}
+.scroll-progress-xi {
+  position: absolute;
+  top: 0;
+  left: 0;
+  font-size: 11px;
+  line-height: 1;
+  color: #a88c6b;
+  text-shadow:
+    0 0 6px rgba(253, 251, 247, 0.95),
+    0 1px 0 rgba(255, 255, 255, 0.8);
+  transform: translate3d(calc(var(--scroll-p, 0) * (100vw - 1.1em) + 0.55em - 50%), 0, 0);
+  will-change: transform;
+  font-weight: 700;
+  letter-spacing: 0;
+}
 .player-panel {
   position: absolute;
   left: 0;