diff --git a/.ua/visual-baseline.json b/.ua/visual-baseline.json
index 58b1e16..0a067bf 100644
--- a/.ua/visual-baseline.json
+++ b/.ua/visual-baseline.json
@@ -1,13 +1,13 @@
 {
   "$schema": "视觉漂移基线：各类硬编码视觉字面量的允许上限，任一类超出即 ua audit:visual 退出码 1；迁移后用 --baseline 重写",
   "file": "packages/skin/ui/ui.css",
-  "commit": "654a9dd",
-  "generatedAt": "2026-10-26T09:53:34.712Z",
+  "commit": "0e996e4",
+  "generatedAt": "2026-10-26T09:54:55.315Z",
   "lines": 4874,
-  "total": 27,
+  "total": 18,
   "counts": {
     "font-size-literal": 0,
-    "duration-literal": 9,
+    "duration-literal": 0,
     "shadow-literal": 5,
     "radius-literal": 0,
     "focus-ring-variant": 0,
diff --git a/llms-full.txt b/llms-full.txt
index 0dd276f..102873d 100644
--- a/llms-full.txt
+++ b/llms-full.txt
@@ -2220,6 +2220,11 @@ node packages/tools/cli/bin/ua.js <index|list|info <包名|组件id>|docs|tokens
 - --ua-duration-fast: 0.15s
 - --ua-duration-base: 0.2s
 - --ua-duration-slow: 0.25s
+- --ua-duration-slower: 0.35s
+- --ua-duration-loop-fast: 0.6s
+- --ua-duration-loop-mid: 0.8s
+- --ua-duration-loop-slow: 1.2s
+- --ua-duration-loop-long: 1.6s
 - --ua-ease: cubic-bezier(0.2, 0.8, 0.2, 1)
 - --ua-ease-out: cubic-bezier(0.16, 1, 0.3, 1)
 - --ua-focus-ring: 0 0 0 3px color-mix(in srgb, var(--ua-color-accent) 22%, transparent)（暗色 0 0 0 3px color-mix(in srgb, var(--ua-color-accent) 34%, transparent)）
diff --git a/packages/design/tokens/tokens.css b/packages/design/tokens/tokens.css
index be667e5..9869ed7 100644
--- a/packages/design/tokens/tokens.css
+++ b/packages/design/tokens/tokens.css
@@ -64,10 +64,15 @@
   --ua-shadow-accent: 0 3px 10px color-mix(in srgb, var(--ua-color-accent) 25%, transparent); /* 主题色投影：主按钮 / 强调控件悬停浮起 */
   --ua-shadow-accent-strong: 0 8px 20px color-mix(in srgb, var(--ua-color-accent) 35%, transparent); /* 主题色强投影：返回顶部等悬浮强调件 */
 
-  /* ---- 动效：三档时长 + 两条主缓动曲线 ---- */
+  /* ---- 动效：四档交互时长 + 四档循环时长 + 两条主缓动曲线 ---- */
   --ua-duration-fast: 0.15s; /* 快：hover / 聚焦 / 颜色与边框变化（既有样式的主流时长） */
   --ua-duration-base: 0.2s; /* 中：展开收起 / 位移 / 透明度过渡 */
   --ua-duration-slow: 0.25s; /* 慢：浮层出入场 / 较大面积变化 */
+  --ua-duration-slower: 0.35s; /* 更慢：进度条宽度推进 / 描边长度等大跨度形变（比浮层出场再长一档） */
+  --ua-duration-loop-fast: 0.6s; /* 循环快档：条纹滚动等细微循环 */
+  --ua-duration-loop-mid: 0.8s; /* 循环中档：加载转圈 / 开关内转圈（0.7 与 0.8 收敛到此档） */
+  --ua-duration-loop-slow: 1.2s; /* 循环慢档：骨架扫光 / 不确定进度条（1.4 收敛到此档） */
+  --ua-duration-loop-long: 1.6s; /* 循环长档：时间线呼吸等低频脉冲，别再用在加载态上 */
   --ua-ease: cubic-bezier(0.2, 0.8, 0.2, 1); /* 标准缓动：先快后缓，控件交互默认用这条 */
   --ua-ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* 出场缓动：元素进入视口 / 弹层出现时使用 */
 
diff --git a/packages/design/tokens/tokens.json b/packages/design/tokens/tokens.json
index 6420ce6..99dc90a 100644
--- a/packages/design/tokens/tokens.json
+++ b/packages/design/tokens/tokens.json
@@ -114,7 +114,12 @@
     "duration": {
       "fast": "0.15s",
       "base": "0.2s",
-      "slow": "0.25s"
+      "slow": "0.25s",
+      "slower": "0.35s",
+      "loopFast": "0.6s",
+      "loopMid": "0.8s",
+      "loopSlow": "1.2s",
+      "loopLong": "1.6s"
     },
     "ease": "cubic-bezier(0.2, 0.8, 0.2, 1)",
     "easeOut": "cubic-bezier(0.16, 1, 0.3, 1)"
diff --git a/packages/skin/ui/ui.css b/packages/skin/ui/ui.css
index b430dbd..f225d5e 100644
--- a/packages/skin/ui/ui.css
+++ b/packages/skin/ui/ui.css
@@ -322,7 +322,7 @@ body.ua-col-resizing {
   background: transparent;
   border: 2px solid color-mix(in srgb, var(--ua-color-bg) 40%, transparent);
   border-top-color: var(--ua-color-bg);
-  animation: ua-switch-spin 0.7s linear infinite;
+  animation: ua-switch-spin var(--ua-duration-loop-mid) linear infinite;
 }
 @keyframes ua-switch-spin {
   to { transform: rotate(360deg); }
@@ -1380,7 +1380,7 @@ button.ua-step-dot:hover {
   inset: 0;
   transform: translateX(-100%);
   background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--ua-color-bg) 65%, transparent), transparent);
-  animation: ua-shimmer 1.4s ease-in-out infinite;
+  animation: ua-shimmer var(--ua-duration-loop-slow) ease-in-out infinite;
 }
 @keyframes ua-shimmer {
   to {
@@ -1478,7 +1478,7 @@ button.ua-step-dot:hover {
   border: 2px solid var(--ua-color-border);
   border-top-color: var(--ua-color-accent);
   border-radius: 50%;
-  animation: ua-spin 0.8s linear infinite;
+  animation: ua-spin var(--ua-duration-loop-mid) linear infinite;
 }
 @keyframes ua-spin {
   to {
@@ -1506,7 +1506,7 @@ button.ua-step-dot:hover {
   width: 0;
   border-radius: inherit;
   background: linear-gradient(90deg, color-mix(in srgb, var(--ua-color-accent) 65%, transparent), var(--ua-color-accent));
-  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
+  transition: width var(--ua-duration-slower) cubic-bezier(0.4, 0, 0.2, 1);
 }
 .ua-progress-fill::after {
   content: '';
@@ -1514,7 +1514,7 @@ button.ua-step-dot:hover {
   inset: 0;
   background-image: repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.18) 0 6px, transparent 6px 12px);
   background-size: 17px 100%;
-  animation: ua-stripe 0.6s linear infinite;
+  animation: ua-stripe var(--ua-duration-loop-fast) linear infinite;
 }
 .ua-progress-fill.ua-done {
   background: var(--ua-color-success);
@@ -1537,7 +1537,7 @@ button.ua-step-dot:hover {
 .ua-progress-fill.ua-indeterminate {
   width: 35%;
   transition: none;
-  animation: ua-indeterminate 1.2s ease-in-out infinite;
+  animation: ua-indeterminate var(--ua-duration-loop-slow) ease-in-out infinite;
 }
 .ua-progress-fill.ua-indeterminate::after {
   animation: none;
@@ -2238,7 +2238,7 @@ button.ua-step-dot:hover {
 .ua-tl-dot-pending {
   background: var(--ua-color-bg);
   border: 1px dashed var(--ua-color-accent);
-  animation: ua-tl-pulse 1.6s ease-in-out infinite;
+  animation: ua-tl-pulse var(--ua-duration-loop-long) ease-in-out infinite;
 }
 .ua-tl-head {
   display: flex;
@@ -2565,7 +2565,7 @@ button.ua-step-dot:hover {
 .ua-carousel-track {
   display: flex;
   height: 100%;
-  transition: transform 0.32s ease;
+  transition: transform var(--ua-duration-slower) ease;
 }
 .ua-carousel-slide {
   flex: 0 0 100%;
@@ -4730,7 +4730,7 @@ h5.ua-type-title { font-size: var(--ua-font-size-md); }
 .ua-progress-ring-arc {
   stroke: var(--ua-color-accent);
   stroke-linecap: round;
-  transition: stroke-dashoffset 0.3s ease;
+  transition: stroke-dashoffset var(--ua-duration-slower) ease;
 }
 .ua-progress-ring.is-success .ua-progress-ring-arc { stroke: var(--ua-color-success); }
 .ua-progress-ring.is-warning .ua-progress-ring-arc { stroke: var(--ua-color-warning); }
diff --git a/packages/tools/cli/lib/visual-rules.mjs b/packages/tools/cli/lib/visual-rules.mjs
index a6106a3..2a18bdb 100644
--- a/packages/tools/cli/lib/visual-rules.mjs
+++ b/packages/tools/cli/lib/visual-rules.mjs
@@ -194,8 +194,19 @@ const DURATION_STEPS = [
   { max: 0.17, token: 'var(--ua-duration-fast)' },
   { max: 0.23, token: 'var(--ua-duration-base)' },
   { max: 0.2501, token: 'var(--ua-duration-slow)' },
+  { max: 0.36, token: 'var(--ua-duration-slower)' },
 ];
 
+/*** 作用：循环动效（infinite）的时长 → 循环四档；0.7/0.8 收敛到中档、1.2/1.4 收敛到慢档，表外保留 ***/
+const LOOP_DURATIONS = new Map([
+  ['0.6s', 'var(--ua-duration-loop-fast)'],
+  ['0.7s', 'var(--ua-duration-loop-mid)'],
+  ['0.8s', 'var(--ua-duration-loop-mid)'],
+  ['1.2s', 'var(--ua-duration-loop-slow)'],
+  ['1.4s', 'var(--ua-duration-loop-slow)'],
+  ['1.6s', 'var(--ua-duration-loop-long)'],
+]);
+
 /*** 作用：控件高度三档的字面值 → 令牌（28/34/40px 三个值保留给控件高度档位，其余尺寸不入此口径） ***/
 const CONTROL_H_TOKENS = new Map([
   ['28px', 'var(--ua-control-h-sm)'],
@@ -305,12 +316,13 @@ function hasTiming(value) {
 /*** 作用：迁移单个动效声明值（逐段替换时长，缺缓动时补 --ua-ease）；返回 null 表示无需改动 ***/
 function migrateMotion(prop, core) {
   const shorthand = prop === 'transition' || prop === 'animation'; // 只有简写能补缓动，-duration 属性补了是非法的
+  const loop = /infinite/.test(core) && (prop === 'animation' || prop === 'animation-duration'); // 无限循环走循环四档
   const parts = splitTopLevel(core);
   let hits = 0;
   const next = parts.map((segment) => {
     let replaced = 0;
     let out = segment.replace(/(\d*\.?\d+)(ms|s)\b/gi, (token) => {
-      const mapped = durationToken(token);
+      const mapped = loop ? LOOP_DURATIONS.get(token.toLowerCase()) ?? null : durationToken(token);
       if (!mapped) return token; // 表外时长保留，交给后续视觉条目单独评估
       replaced++;
       hits++;