diff --git a/docs/CHANGELOG_web.md b/docs/CHANGELOG_web.md
index 4f8054b..d89b824 100644
--- a/docs/CHANGELOG_web.md
+++ b/docs/CHANGELOG_web.md
@@ -8,6 +8,11 @@ The format loosely follows Keep a Changelog and can be adapted to the team's hab
 
 ## [Unreleased]
 
+### Changed / 变更
+
+- Reader UI cleanup: the legacy style helpers (ui.ts / icons.tsx) and all rd-* classes are gone; every reader surface now uses the shared design tokens and components.
+- 阅读器 UI 清理:旧样式助手(ui.ts / icons.tsx)与全部 rd-* 类删除;所有阅读器表面统一使用共享设计 token 与组件。
+
 ### Added / 新增
 
 - The shelf page gains a reading stats card (this week's time, streak days, expandable 7-day bar chart); reading time is tracked on-device while a book is open.
diff --git a/frontend/src/auth/AuthContext.tsx b/frontend/src/auth/AuthContext.tsx
index c6cafc5..ee23081 100644
--- a/frontend/src/auth/AuthContext.tsx
+++ b/frontend/src/auth/AuthContext.tsx
@@ -78,7 +78,7 @@ export function RequireAuth({ children }: { children: ReactNode }) {
   const { user, ready } = useAuth();
   const loc = useLocation();
   if (!getToken()) return <Navigate to="/login" replace state={{ from: loc.pathname }} />;
-  if (!ready || !user) return <div className="grid h-full place-items-center text-stone-500">加载中…</div>;
+  if (!ready || !user) return <div className="text-muted-foreground grid h-full place-items-center">加载中…</div>;
   return <>{children}</>;
 }
 
diff --git a/frontend/src/components/Cover.tsx b/frontend/src/components/Cover.tsx
index e46fea7..4499647 100644
--- a/frontend/src/components/Cover.tsx
+++ b/frontend/src/components/Cover.tsx
@@ -1,7 +1,8 @@
 import { useEffect, useState } from "react";
 import type { Book } from "../api/types";
 import { fetchObjectUrl } from "../lib/authImage";
-import { btn, formatBadge } from "./ui";
+import { FormatBadge } from "./format-badge";
+import { Button } from "./ui/button";
 import { TriangleAlert } from "lucide-react";
 
 export function useAuthedImage(url: string | undefined): { src: string; failed: boolean; retry: () => void } {
@@ -44,12 +45,17 @@ export function Cover({ book, className }: { book: Book; className?: string }) {
         <span className="select-none font-serif text-4xl text-muted-foreground">
           {Array.from(book.title)[0] ?? "?"}
         </span>
-        <span className={formatBadge(book.format, "absolute bottom-1.5 right-1.5")}>{book.format}</span>
+        <FormatBadge fmt={book.format} className="absolute right-1.5 bottom-1.5" />
         {failed && (
-          <button className={btn + " absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2"} onClick={retry}>
+          <Button
+            variant="secondary"
+            size="xs"
+            className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 gap-1"
+            onClick={retry}
+          >
             <TriangleAlert className="size-4" />
             封面重试
-          </button>
+          </Button>
         )}
       </div>
     );
diff --git a/frontend/src/components/ErrorBoundary.tsx b/frontend/src/components/ErrorBoundary.tsx
index 977340b..ed35c20 100644
--- a/frontend/src/components/ErrorBoundary.tsx
+++ b/frontend/src/components/ErrorBoundary.tsx
@@ -13,9 +13,9 @@ export class ErrorBoundary extends Component<{ children: ReactNode }, { err: Err
         <div className="grid h-full place-items-center p-8 text-center">
           <div>
             <p className="mb-2 text-lg text-red-400">页面出错了</p>
-            <p className="mb-4 max-w-md text-sm break-all text-stone-500">{String(this.state.err)}</p>
+            <p className="mb-4 max-w-md text-sm break-all text-muted-foreground">{String(this.state.err)}</p>
             <button
-              className="rounded-md bg-stone-800 px-3 py-1.5 text-sm"
+              className="rounded-md bg-secondary px-3 py-1.5 text-sm"
               onClick={() => this.setState({ err: null })}
             >
               重试
diff --git a/frontend/src/components/icons.tsx b/frontend/src/components/icons.tsx
deleted file mode 100644
index 8a3943e..0000000
--- a/frontend/src/components/icons.tsx
+++ /dev/null
@@ -1,24 +0,0 @@
-import type { SVGProps } from "react";
-
-function Svg({ children, ...p }: SVGProps<SVGSVGElement>) {
-  return (
-    <svg
-      viewBox="0 0 24 24"
-      fill="none"
-      stroke="currentColor"
-      strokeWidth={1.7}
-      strokeLinecap="round"
-      strokeLinejoin="round"
-      aria-hidden="true"
-      {...p}
-    >
-      {children}
-    </svg>
-  );
-}
-
-export const IconArrowLeft = (p: SVGProps<SVGSVGElement>) => (
-  <Svg {...p}>
-    <path d="M20 12H4m0 0 6-6m-6 6 6 6" />
-  </Svg>
-);
diff --git a/frontend/src/components/ui.ts b/frontend/src/components/ui.ts
deleted file mode 100644
index ada501d..0000000
--- a/frontend/src/components/ui.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import type { Format } from "../api/types";
-
-export const btn =
-  "inline-flex items-center gap-1.5 rounded-lg bg-white/[0.06] px-3 py-1.5 text-sm ring-1 ring-white/10 transition-colors hover:bg-white/[0.11] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-amber-500 active:bg-white/[0.15] disabled:cursor-not-allowed disabled:opacity-50";
-export const btnGhost =
-  "inline-flex items-center gap-1.5 rounded-lg px-2.5 py-1.5 text-sm text-stone-400 transition-colors hover:bg-white/[0.07] hover:text-stone-100 focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-amber-500";
-
-// 格式徽章:按类型着色,色彩之外始终伴随文字,不依赖颜色单独传义
-export const FORMAT_BADGE: Record<Format, string> = {
-  cbz: "bg-orange-500/15 text-orange-300 ring-orange-500/25",
-  pdf: "bg-rose-500/15 text-rose-300 ring-rose-500/25",
-  epub: "bg-sky-500/15 text-sky-300 ring-sky-500/25",
-  txt: "bg-emerald-500/15 text-emerald-300 ring-emerald-500/25",
-  md: "bg-teal-500/15 text-teal-300 ring-teal-500/25",
-};
-
-export function formatBadge(fmt: Format, extra = ""): string {
-  return `rounded px-1.5 py-0.5 text-[10px] font-semibold uppercase tracking-wide ring-1 ${FORMAT_BADGE[fmt]} ${extra}`;
-}
diff --git a/frontend/src/index.css b/frontend/src/index.css
index 1084f32..78a4a56 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -149,74 +149,8 @@ body {
 .rd-surface ::selection {
   background: color-mix(in oklab, var(--rd-link) 30%, transparent);
 }
-/* 主题内的次级控件(章节条/翻页键),跟随当前阅读主题 */
-.rd-btn {
-  @apply rounded-md px-2.5 py-1 text-sm transition-colors;
-  background: color-mix(in oklab, currentColor 8%, transparent);
-}
-.rd-btn:hover {
-  background: color-mix(in oklab, currentColor 16%, transparent);
-}
-.rd-btn:disabled {
-  @apply cursor-not-allowed opacity-40;
-}
-/* 目录侧边栏行 */
-.rd-row {
-  @apply block w-full truncate rounded-md px-2.5 py-1.5 text-left text-sm transition-colors;
-}
-.rd-row:hover {
-  background: color-mix(in oklab, currentColor 12%, transparent);
-}
-.rd-btn-on {
-  @apply font-semibold;
-  background: color-mix(in oklab, currentColor 20%, transparent);
-}
-/* Radix 菜单项高亮(指针/键盘) */
-.rd-highlight {
-  outline: none;
-}
-.rd-highlight[data-highlighted] {
-  background: color-mix(in oklab, currentColor 16%, transparent);
-}
-.rd-divider {
-  border-color: color-mix(in oklab, currentColor 14%, transparent);
-}
 
-/* 进度/页码滑条:主题色轨道 + 强调色拇指,触摸友好 */
-.rd-range {
-  @apply h-1.5 w-full cursor-pointer appearance-none rounded-full;
-  background: color-mix(in oklab, currentColor 18%, transparent);
-}
-.rd-range::-webkit-slider-thumb {
-  @apply h-4 w-4 appearance-none rounded-full ring-2 ring-black/10;
-  background: var(--rd-link, #f59e0b);
-}
-.rd-range::-moz-range-thumb {
-  @apply h-4 w-4 rounded-full border-0;
-  background: var(--rd-link, #f59e0b);
-}
-
-/* 沉浸态底部工具抽屉的滑入动效 */
-@keyframes rd-rise {
-  from {
-    transform: translateY(100%);
-    opacity: 0.4;
-  }
-  to {
-    transform: translateY(0);
-    opacity: 1;
-  }
-}
-.rd-sheet {
-  animation: rd-rise 0.2s ease-out;
-}
 @media (prefers-reduced-motion: reduce) {
-  .rd-sheet {
-    animation: none;
-  }
-  .rd-rise-anim {
-    transition: none !important;
-  }
   .fx-rise {
     animation: none;
   }
diff --git a/frontend/src/pages/Shelf.tsx b/frontend/src/pages/Shelf.tsx
index da300a9..63af992 100644
--- a/frontend/src/pages/Shelf.tsx
+++ b/frontend/src/pages/Shelf.tsx
@@ -18,7 +18,7 @@ import { Cover } from "@/components/Cover";
 import { toast } from "@/components/Toaster";
 import { UploadButton } from "@/components/upload-button";
 import { ReadingStatsCard } from "@/components/reading-stats-card";
-import { formatBadge } from "@/components/ui";
+import { FormatBadge } from "@/components/format-badge";
 import {
   AlertDialog,
   AlertDialogAction,
@@ -68,7 +68,7 @@ function BookCard({
       >
         <span className="relative block aspect-[3/4] overflow-hidden rounded-md border bg-muted shadow-sm transition group-hover:shadow-md group-hover:ring-2 group-hover:ring-accent/50">
           <Cover book={book} className="size-full" />
-          <span className={formatBadge(book.format, "absolute left-1.5 top-1.5")}>{book.format}</span>
+          <FormatBadge fmt={book.format} className="absolute left-1.5 top-1.5" />
           {book.state === "error" && (
             <span
               className="absolute right-1.5 top-1.5 flex items-center gap-1 rounded bg-destructive px-1.5 py-0.5 text-[10px] font-semibold text-destructive-foreground"
diff --git a/frontend/src/readers/CbzReader.tsx b/frontend/src/readers/CbzReader.tsx
index 7001d78..83de022 100644
--- a/frontend/src/readers/CbzReader.tsx
+++ b/frontend/src/readers/CbzReader.tsx
@@ -41,14 +41,14 @@ function PageImg({ url, width, onLoaded }: { url: string; width: number; onLoade
   }, [url, nonce]);
   if (failed)
     return (
-      <div className="grid place-items-center gap-2 bg-stone-900 py-8 text-sm text-stone-500" style={{ width }}>
+      <div className="bg-muted text-muted-foreground grid place-items-center gap-2 py-8 text-sm" style={{ width }}>
         本页加载失败
         <Button variant="secondary" onClick={() => setNonce((n) => n + 1)}>
           重试
         </Button>
       </div>
     );
-  if (!src) return <div className="animate-pulse bg-stone-800" style={{ width, height: width * EST_RATIO }} />;
+  if (!src) return <div className="animate-pulse bg-muted" style={{ width, height: width * EST_RATIO }} />;
   return (
     <img
       src={src}
@@ -286,10 +286,10 @@ export default function CbzReader({ book, initialLocator, initialPercent, chrome
 
   // pages_url 缺失时 query 被 disabled 永久 pending → 只有真正发起了请求才显示加载态
   if (countQ.isPending && !!book.pages_url)
-    return <div className="grid h-full place-items-center text-stone-500">页索引加载中…</div>;
+    return <div className="text-muted-foreground grid h-full place-items-center">页索引加载中…</div>;
   if (countQ.isError || !book.page_url_fmt)
     return (
-      <div className="grid h-full place-items-center p-8 text-center text-stone-500">
+      <div className="text-muted-foreground grid h-full place-items-center p-8 text-center">
         无法解析页索引:{countQ.error instanceof Error ? countQ.error.message : "缺 page_url_fmt"}
       </div>
     );
@@ -396,7 +396,7 @@ export default function CbzReader({ book, initialLocator, initialPercent, chrome
                 style={{ top: ph.offset(w.end) - anchor, height: vh }}
               >
                 {w.end >= count ? (
-                  <span className="text-sm text-stone-500">— 全书完 —</span>
+                  <span className="text-muted-foreground text-sm">— 全书完 —</span>
                 ) : (
                   <Button variant="secondary" onClick={() => goPage(chapters![ci + 1].start)}>
                     本章完 · 下一章 <ChevronRight size={14} className="inline" />
@@ -544,7 +544,10 @@ export default function CbzReader({ book, initialLocator, initialPercent, chrome
                   <li key={i}>
                     <button
                       ref={i === ci ? activeRow : undefined}
-                      className={"rd-row" + (i === ci ? " rd-btn-on" : "")}
+                      className={
+                        "min-w-0 flex-1 truncate rounded-md px-2.5 py-1.5 text-left text-sm transition-colors hover:bg-accent hover:text-accent-foreground" +
+                        (i === ci ? " bg-accent text-accent-foreground" : "")
+                      }
                       onClick={() => {
                         goPage(c.start);
                         setNav(null);
diff --git a/frontend/src/readers/TextReader.tsx b/frontend/src/readers/TextReader.tsx
index 882650f..442b1cf 100644
--- a/frontend/src/readers/TextReader.tsx
+++ b/frontend/src/readers/TextReader.tsx
@@ -411,7 +411,10 @@ function TxtView({ book, initialLocator, initialPercent, chrome }: ReaderProps)
                   <li key={i}>
                     <button
                       ref={i === ci ? activeRow : undefined}
-                      className={"rd-row" + (i === ci ? " rd-btn-on" : "")}
+                      className={
+                        "min-w-0 flex-1 truncate rounded-md px-2.5 py-1.5 text-left text-sm transition-colors hover:bg-accent hover:text-accent-foreground" +
+                        (i === ci ? " bg-accent text-accent-foreground" : "")
+                      }
                       onClick={() => {
                         goChapter(i);
                         setNav(null);