feat(public-frontend): 公开前端 UI 视觉升级

引入统一品牌主题(色阶/字体/阴影/动效),重做首页 hero、卡片、导航与页脚,统一各页面的卡片/输入框/按钮样式。

- tailwind: 新增 brand 色阶、Inter 字体、card/glow 阴影与 fade-up 动效
- index.html: 引入 Inter 字体与 theme-color/description meta
- index.css: 双径向渐变背景 + @layer 组件类(.card/.input/.btn-primary 等)
- App/Home/ProductView/Contribute/ApiDocs/Account: 套用新设计系统

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

public-frontend/src/components/Account.tsx

@@ -5,7 +5,7 @@ import { api, type AccountInfo, type KeyResponse } from "../api";
 function KeyReveal({ data }: { data: KeyResponse }) {
   const [copied, setCopied] = useState(false);
   return (
-    <div className="mt-4 rounded-lg border border-emerald-200 bg-emerald-50 p-4">
+    <div className="mt-4 rounded-lg border border-brand-100 bg-brand-50 p-4">
       <div className="flex items-start gap-2 text-amber-700 text-sm">
         <AlertTriangle className="w-4 h-4 mt-0.5 shrink-0" />
         <span>请立即复制保存此密钥，它只显示这一次，无法再次查看。</span>
@@ -27,7 +27,7 @@ function KeyReveal({ data }: { data: KeyResponse }) {
           className="text-gray-400 hover:text-gray-600 shrink-0"
           title="复制"
         >
-          {copied ? <Check className="w-5 h-5 text-emerald-600" /> : <Copy className="w-5 h-5" />}
+          {copied ? <Check className="w-5 h-5 text-brand-600" /> : <Copy className="w-5 h-5" />}
         </button>
       </div>
       <div className="mt-3 text-sm text-gray-600">
@@ -92,9 +92,9 @@ export default function Account() {
 
   return (
     <div className="max-w-xl mx-auto space-y-5">
-      <div className="bg-white border rounded-lg p-5">
+      <div className="card p-5">
         <h1 className="flex items-center gap-2 text-2xl font-bold text-gray-800">
-          <KeyRound className="w-6 h-6 text-emerald-600" /> API 密钥
+          <KeyRound className="w-6 h-6 text-brand-600" /> API 密钥
         </h1>
         <p className="mt-2 text-sm text-gray-600 leading-relaxed">
           匿名调用免费，但每个来源 IP 累计共 <strong>1000</strong> 次。注册一个账号即可自助领取专属 API
@@ -104,7 +104,7 @@ export default function Account() {
         <div className="mt-4 inline-flex rounded-md border bg-gray-50 p-0.5 text-sm">
           <button
             className={`px-4 py-1.5 rounded ${
-              mode === "register" ? "bg-white shadow-sm text-emerald-700" : "text-gray-500"
+              mode === "register" ? "bg-white shadow-sm text-brand-700" : "text-gray-500"
             }`}
             onClick={() => {
               setMode("register");
@@ -115,7 +115,7 @@ export default function Account() {
           </button>
           <button
             className={`px-4 py-1.5 rounded ${
-              mode === "manage" ? "bg-white shadow-sm text-emerald-700" : "text-gray-500"
+              mode === "manage" ? "bg-white shadow-sm text-brand-700" : "text-gray-500"
             }`}
             onClick={() => {
               setMode("manage");
@@ -135,7 +135,7 @@ export default function Account() {
               value={email}
               onChange={(e) => setEmail(e.target.value)}
               placeholder="you@example.com"
-              className="w-full border rounded-md px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-emerald-500"
+              className="w-full border rounded-md px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-brand-500"
             />
           </div>
           <div>
@@ -146,14 +146,14 @@ export default function Account() {
               value={password}
               onChange={(e) => setPassword(e.target.value)}
               placeholder="••••••••"
-              className="w-full border rounded-md px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-emerald-500"
+              className="w-full border rounded-md px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-brand-500"
             />
           </div>
           {error && <div className="text-sm text-red-600">{error}</div>}
           <button
             type="submit"
             disabled={loading}
-            className="w-full bg-emerald-600 text-white rounded-md py-2 text-sm font-medium hover:bg-emerald-700 disabled:opacity-50"
+            className="w-full bg-brand-600 text-white rounded-md py-2 text-sm font-medium hover:bg-brand-700 disabled:opacity-50"
           >
             {loading ? "处理中…" : mode === "register" ? "注册并领取密钥" : "查询账号"}
           </button>
@@ -175,12 +175,12 @@ export default function Account() {
             <div>
               累计配额：已用 <strong>{info.quota_used.toLocaleString()}</strong> /{" "}
               {info.quota_total.toLocaleString()} 次（剩余{" "}
-              <strong className="text-emerald-600">{info.quota_remaining.toLocaleString()}</strong>）
+              <strong className="text-brand-600">{info.quota_remaining.toLocaleString()}</strong>）
             </div>
             <button
               onClick={regenerate}
               disabled={loading}
-              className="mt-2 text-emerald-600 hover:underline disabled:opacity-50"
+              className="mt-2 text-brand-600 hover:underline disabled:opacity-50"
             >
               忘记密钥？重置并生成新密钥
             </button>

public-frontend/src/components/ApiDocs.tsx

@@ -20,7 +20,7 @@ function CopyBtn({ text }: { text: string }) {
       className="text-gray-400 hover:text-gray-600"
       title="复制"
     >
-      {done ? <Check className="w-4 h-4 text-emerald-600" /> : <Copy className="w-4 h-4" />}
+      {done ? <Check className="w-4 h-4 text-brand-600" /> : <Copy className="w-4 h-4" />}
     </button>
   );
 }
@@ -39,7 +39,7 @@ function Code({ children }: { children: string }) {
 }
 
 function Method({ m }: { m: string }) {
-  const color = m === "GET" ? "bg-sky-100 text-sky-700" : "bg-emerald-100 text-emerald-700";
+  const color = m === "GET" ? "bg-sky-100 text-sky-700" : "bg-brand-100 text-brand-700";
   return <span className={`text-xs font-mono font-semibold rounded px-1.5 py-0.5 ${color}`}>{m}</span>;
 }
 
@@ -63,7 +63,7 @@ function Endpoint({
   response: string;
 }) {
   return (
-    <div className="bg-white border rounded-lg p-5">
+    <div className="card p-5">
       <div className="flex items-center gap-2 flex-wrap">
         <Method m={method} />
         <code className="text-sm text-gray-800 font-mono break-all">{path}</code>
@@ -105,7 +105,7 @@ function Endpoint({
 export default function ApiDocs({ onRegister }: { onRegister?: () => void }) {
   return (
     <div className="space-y-5">
-      <div className="bg-white border rounded-lg p-5">
+      <div className="card p-5">
         <h1 className="text-2xl font-bold text-gray-800">API 调用说明</h1>
         <p className="mt-2 text-gray-600 text-sm leading-relaxed">
           天工商品档案公共仓提供<strong>公开、只读、免鉴权</strong>的商品事实 REST API，任何人都可直接调用，
@@ -119,7 +119,7 @@ export default function ApiDocs({ onRegister }: { onRegister?: () => void }) {
           <ul className="mt-2 list-disc pl-5 text-gray-600 space-y-1">
             <li>
               无需 API Key / Token 即可直接 GET；匿名调用按来源 IP 累计共 <strong>1000</strong> 次，
-              用满后需<button onClick={onRegister} className="text-emerald-600 hover:underline">注册账号</button>
+              用满后需<button onClick={onRegister} className="text-brand-600 hover:underline">注册账号</button>
               领取更高配额密钥（见下文「鉴权与配额」）。
             </li>
             <li>
@@ -135,13 +135,13 @@ export default function ApiDocs({ onRegister }: { onRegister?: () => void }) {
         </div>
       </div>
 
-      <div className="bg-white border rounded-lg p-5">
+      <div className="card p-5">
         <h2 className="text-lg font-semibold text-gray-800">鉴权与配额</h2>
         <p className="mt-2 text-gray-600 text-sm leading-relaxed">
           API 默认<strong>匿名可用</strong>：无需任何凭证即可调用，但按来源 IP 计一个
           <strong>累计总配额（共 1000 次）</strong>，用满后返回
           <code className="font-mono">403</code>（错误码 <code className="font-mono">quota_exhausted</code>），
-          需<button onClick={onRegister} className="text-emerald-600 hover:underline">注册账号</button>
+          需<button onClick={onRegister} className="text-brand-600 hover:underline">注册账号</button>
           自助领取更高配额的 API Key。注册得到的密钥拥有更高的每分钟频率与累计调用配额，请求时通过请求头携带：
         </p>
         <div className="mt-3">

public-frontend/src/components/Contribute.tsx

@@ -89,38 +89,36 @@ export default function Contribute({ onDone }: { onDone: () => void }) {
 
   if (done) {
     return (
-      <div className="max-w-xl mx-auto text-center py-16">
-        <CheckCircle2 className="w-14 h-14 text-emerald-500 mx-auto" />
+      <div className="max-w-xl mx-auto text-center py-16 animate-fade-up">
+        <span className="mx-auto grid h-16 w-16 place-items-center rounded-2xl bg-brand-50">
+          <CheckCircle2 className="w-9 h-9 text-brand-600" />
+        </span>
         <h1 className="mt-4 text-xl font-semibold text-gray-800">已提交，等待审核</h1>
         <p className="mt-2 text-gray-500">
           感谢你的贡献！资料将由管理员人工审核，通过后会收录进公共商品库。
         </p>
-        <button
-          onClick={onDone}
-          className="mt-6 px-5 py-2 rounded-lg bg-emerald-600 text-white hover:bg-emerald-700"
-        >
+        <button onClick={onDone} className="btn-primary mt-6">
           返回首页
         </button>
       </div>
     );
   }
 
-  const input =
-    "w-full border rounded-md px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-emerald-400";
-  const label = "block text-xs text-gray-500 mb-1";
+  const input = "input";
+  const label = "block text-xs font-medium text-gray-500 mb-1";
 
   return (
-    <form onSubmit={submit} className="max-w-3xl mx-auto">
-      <h1 className="text-xl font-semibold text-gray-800">贡献商品档案</h1>
+    <form onSubmit={submit} className="max-w-3xl mx-auto animate-fade-up">
+      <h1 className="text-2xl font-semibold tracking-tight text-gray-900">贡献商品档案</h1>
       <p className="mt-1 text-sm text-gray-500">
         任何人都可以提交新商品资料。提交后会进入审核队列，<b>通过人工审核后才会收纳</b>。带 * 为必填。
       </p>
 
       {error && (
-        <div className="mt-4 bg-red-50 text-red-700 text-sm rounded-md px-4 py-2">{error}</div>
+        <div className="mt-4 rounded-xl bg-red-50 px-4 py-2.5 text-sm text-red-700">{error}</div>
       )}
 
-      <div className="bg-white border rounded-lg p-5 mt-4">
+      <div className="card p-5 mt-4">
         <h2 className="font-medium text-gray-700 mb-3">基础信息</h2>
         <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
           <div className="sm:col-span-2">
@@ -167,7 +165,7 @@ export default function Contribute({ onDone }: { onDone: () => void }) {
         </div>
       </div>
 
-      <div className="bg-white border rounded-lg p-5 mt-4">
+      <div className="card p-5 mt-4">
         <h2 className="font-medium text-gray-700 mb-3">配料与营养</h2>
         <label className={label}>配料表</label>
         <textarea
@@ -201,7 +199,7 @@ export default function Contribute({ onDone }: { onDone: () => void }) {
         </div>
       </div>
 
-      <div className="bg-white border rounded-lg p-5 mt-4">
+      <div className="card p-5 mt-4">
         <h2 className="font-medium text-gray-700 mb-3">图片（仅填 URL）</h2>
         {images.length > 0 && (
           <ul className="mb-3 space-y-1">
@@ -234,14 +232,14 @@ export default function Contribute({ onDone }: { onDone: () => void }) {
                 setImageURL("");
               }
             }}
-            className="shrink-0 px-3 rounded-md border text-sm flex items-center gap-1 hover:bg-gray-50"
+            className="shrink-0 px-3 rounded-xl border border-gray-200 text-sm flex items-center gap-1 hover:bg-gray-50"
           >
             <PlusCircle className="w-4 h-4" /> 添加
           </button>
         </div>
       </div>
 
-      <div className="bg-white border rounded-lg p-5 mt-4">
+      <div className="card p-5 mt-4">
         <h2 className="font-medium text-gray-700 mb-3">联系方式（选填）</h2>
         <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
           <div>
@@ -260,11 +258,7 @@ export default function Contribute({ onDone }: { onDone: () => void }) {
       </div>
 
       <div className="mt-5 flex items-center gap-3">
-        <button
-          type="submit"
-          disabled={submitting}
-          className="px-6 py-2.5 rounded-lg bg-emerald-600 text-white font-medium hover:bg-emerald-700 disabled:opacity-60"
-        >
+        <button type="submit" disabled={submitting} className="btn-primary px-6">
           {submitting ? "提交中…" : "提交审核"}
         </button>
         <button type="button" onClick={onDone} className="text-sm text-gray-500 hover:underline">

public-frontend/src/components/Home.tsx

@@ -1,8 +1,28 @@
 import { useState } from "react";
-import { Search, PlusCircle, Code2 } from "lucide-react";
+import { Search, PlusCircle, Code2, ScanBarcode, ShieldCheck, ArrowRight } from "lucide-react";
 import { api } from "../api";
 import type { ProductSummary } from "../types";
 
+const EXAMPLES = ["可乐", "Nutella", "牛奶", "5449000000996"];
+
+const FEATURES = [
+  {
+    icon: Search,
+    title: "客观可查",
+    desc: "按名称或条码检索商品的成分、营养、规格等官方事实。",
+  },
+  {
+    icon: ShieldCheck,
+    title: "可溯源",
+    desc: "每条资料标注数据来源与质量分，公开透明、人人可核。",
+  },
+  {
+    icon: Code2,
+    title: "开放 API",
+    desc: "免鉴权只读 REST 接口，开发者可直接接入商品档案。",
+  },
+];
+
 export default function Home({
   onOpen,
   onContribute,
@@ -19,12 +39,14 @@ export default function Home({
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState("");
 
-  async function run(e?: React.FormEvent) {
+  async function run(term?: string, e?: React.FormEvent) {
     e?.preventDefault();
+    const keyword = (term ?? q).trim();
+    if (term !== undefined) setQ(term);
     setLoading(true);
     setError("");
     try {
-      const res = await api.search(q.trim(), 1, 30);
+      const res = await api.search(keyword, 1, 30);
       setItems(res.items);
       setTotal(res.total);
       setSearched(true);
@@ -36,87 +58,123 @@ export default function Home({
   }
 
   return (
-    <div>
-      <div className="text-center py-10">
-        <h1 className="text-3xl font-bold text-gray-800">天工</h1>
-        <p className="mt-2 text-gray-500">
-          输入商品名称或条码，检索客观、可溯源的商品资料。人人可查，人人可贡献。
-        </p>
-        <form onSubmit={run} className="mt-6 max-w-2xl mx-auto flex gap-2">
-          <div className="flex-1 flex items-center gap-2 bg-white border rounded-lg px-3 shadow-sm focus-within:ring-2 focus-within:ring-emerald-400">
-            <Search className="w-5 h-5 text-gray-400" />
-            <input
-              autoFocus
-              value={q}
-              onChange={(e) => setQ(e.target.value)}
-              placeholder="例如：可乐、Nutella、5449000000996"
-              className="flex-1 py-3 outline-none bg-transparent"
-            />
+    <div className="animate-fade-up">
+      <section className="relative overflow-hidden rounded-3xl border border-gray-100 bg-gradient-to-b from-white to-brand-50/40 px-6 py-14 text-center shadow-card">
+        <div
+          aria-hidden
+          className="pointer-events-none absolute -top-24 left-1/2 h-72 w-[42rem] -translate-x-1/2 rounded-full bg-brand-200/30 blur-3xl"
+        />
+        <div className="relative">
+          <span className="inline-flex items-center gap-1.5 rounded-full border border-brand-200 bg-white/70 px-3 py-1 text-xs font-medium text-brand-700">
+            <ShieldCheck className="w-3.5 h-3.5" /> 公益 · 开放 · 可溯源
+          </span>
+          <h1 className="mt-5 text-4xl sm:text-5xl font-extrabold tracking-tight text-gray-900">
+            天<span className="bg-gradient-to-r from-brand-600 to-emerald-500 bg-clip-text text-transparent">工</span>
+          </h1>
+          <p className="mx-auto mt-3 max-w-xl text-gray-500">
+            输入商品名称或条码，检索客观、可溯源的商品资料。人人可查，人人可贡献。
+          </p>
+
+          <form onSubmit={(e) => run(undefined, e)} className="mx-auto mt-7 flex max-w-2xl gap-2">
+            <div className="flex flex-1 items-center gap-2 rounded-xl border border-gray-200 bg-white px-3.5 shadow-sm transition focus-within:border-brand-400 focus-within:ring-4 focus-within:ring-brand-500/10">
+              <Search className="h-5 w-5 shrink-0 text-gray-400" />
+              <input
+                autoFocus
+                value={q}
+                onChange={(e) => setQ(e.target.value)}
+                placeholder="例如：可乐、Nutella、5449000000996"
+                className="flex-1 bg-transparent py-3.5 outline-none"
+              />
+            </div>
+            <button type="submit" disabled={loading} className="btn-primary px-7">
+              {loading ? "检索中…" : "检索"}
+            </button>
+          </form>
+
+          <div className="mt-4 flex flex-wrap items-center justify-center gap-2">
+            <span className="text-xs text-gray-400">试试：</span>
+            {EXAMPLES.map((ex) => (
+              <button key={ex} type="button" className="chip" onClick={() => run(ex)}>
+                <ScanBarcode className="w-3 h-3" /> {ex}
+              </button>
+            ))}
           </div>
+
           <button
-            type="submit"
-            disabled={loading}
-            className="px-6 rounded-lg bg-emerald-600 text-white font-medium hover:bg-emerald-700 disabled:opacity-60"
+            onClick={onApi}
+            className="mt-5 inline-flex items-center gap-1.5 text-sm font-medium text-brand-700 hover:underline"
           >
-            {loading ? "检索中…" : "检索"}
+            <Code2 className="w-4 h-4" /> 开发者？查看 API 调用说明，免鉴权接入商品档案
           </button>
-        </form>
-        <button
-          onClick={onApi}
-          className="mt-4 inline-flex items-center gap-1.5 text-sm text-emerald-700 hover:underline"
-        >
-          <Code2 className="w-4 h-4" /> 开发者？查看 API 调用说明，免鉴权接入商品档案
-        </button>
-      </div>
+        </div>
+      </section>
 
       {error && (
-        <div className="max-w-2xl mx-auto bg-red-50 text-red-700 text-sm rounded-md px-4 py-2">
+        <div className="mx-auto mt-6 max-w-2xl rounded-xl bg-red-50 px-4 py-2.5 text-sm text-red-700">
           {error}
         </div>
       )}
 
-      {searched && (
-        <div className="mt-2">
-          <div className="text-sm text-gray-500 mb-2">
-            共 {total} 条结果{q ? `（关键词：${q}）` : ""}
+      {searched ? (
+        <div className="mt-8">
+          <div className="mb-3 text-sm text-gray-500">
+            共 <span className="font-semibold text-gray-700">{total}</span> 条结果
+            {q ? `（关键词：${q}）` : ""}
           </div>
           {items.length === 0 ? (
-            <div className="bg-white border rounded-lg p-8 text-center text-gray-500">
+            <div className="card p-10 text-center text-gray-500">
               <p>没有找到相关商品。</p>
               <button
                 onClick={onContribute}
-                className="mt-3 inline-flex items-center gap-1.5 text-emerald-700 hover:underline"
+                className="mt-3 inline-flex items-center gap-1.5 font-medium text-brand-700 hover:underline"
               >
                 <PlusCircle className="w-4 h-4" /> 你知道这个商品？去贡献档案
               </button>
             </div>
           ) : (
-            <ul className="bg-white border rounded-lg divide-y">
+            <ul className="card divide-y divide-gray-100 overflow-hidden">
               {items.map((p) => (
                 <li key={p.id}>
                   <button
                     onClick={() => onOpen(p.id)}
-                    className="w-full text-left px-4 py-3 hover:bg-gray-50 flex items-center justify-between gap-4"
+                    className="group flex w-full items-center justify-between gap-4 px-4 py-3.5 text-left transition hover:bg-brand-50/50"
                   >
-                    <div>
-                      <div className="font-medium text-gray-800">{p.name}</div>
-                      <div className="text-xs text-gray-500 mt-0.5">
+                    <div className="min-w-0">
+                      <div className="truncate font-medium text-gray-800 group-hover:text-brand-700">
+                        {p.name}
+                      </div>
+                      <div className="mt-0.5 text-xs text-gray-500">
                         {p.brand || "未知品牌"}
                         {p.gtin ? ` · ${p.gtin}` : ""}
                       </div>
                     </div>
-                    <span className="text-xs text-gray-400 text-right">
-                      <span className="block">{p.category_path || ""}</span>
-                      {p.country_of_origin ? (
-                        <span className="block text-gray-400">产地：{p.country_of_origin}</span>
-                      ) : null}
-                    </span>
+                    <div className="flex shrink-0 items-center gap-3">
+                      <span className="text-right text-xs text-gray-400">
+                        <span className="block">{p.category_path || ""}</span>
+                        {p.country_of_origin ? (
+                          <span className="block">产地：{p.country_of_origin}</span>
+                        ) : null}
+                      </span>
+                      <ArrowRight className="h-4 w-4 text-gray-300 transition group-hover:translate-x-0.5 group-hover:text-brand-500" />
+                    </div>
                   </button>
                 </li>
               ))}
             </ul>
           )}
         </div>
+      ) : (
+        <div className="mt-8 grid gap-4 sm:grid-cols-3">
+          {FEATURES.map(({ icon: Icon, title, desc }) => (
+            <div key={title} className="card p-5 transition hover:shadow-card-hover">
+              <span className="grid h-10 w-10 place-items-center rounded-xl bg-brand-50 text-brand-600">
+                <Icon className="h-5 w-5" />
+              </span>
+              <h3 className="mt-3 font-semibold text-gray-800">{title}</h3>
+              <p className="mt-1 text-sm leading-relaxed text-gray-500">{desc}</p>
+            </div>
+          ))}
+        </div>
       )}
     </div>
   );

public-frontend/src/components/ProductView.tsx

@@ -28,11 +28,11 @@ export default function ProductView({ id, onBack }: { id: string; onBack: () =>
         <button onClick={onBack} className="text-sm text-gray-500 flex items-center gap-1 mb-4">
           <ArrowLeft className="w-4 h-4" /> 返回
         </button>
-        <div className="bg-red-50 text-red-700 text-sm rounded-md px-4 py-3">{error}</div>
+        <div className="rounded-xl bg-red-50 px-4 py-3 text-sm text-red-700">{error}</div>
       </div>
     );
   }
-  if (!p) return <div className="text-gray-400">加载中…</div>;
+  if (!p) return <div className="text-gray-400 animate-pulse">加载中…</div>;
 
   const basisLabel: Record<string, string> = {
     per_100g: "每 100g",
@@ -45,14 +45,14 @@ export default function ProductView({ id, onBack }: { id: string; onBack: () =>
 
   return (
     <div>
-      <button onClick={onBack} className="text-sm text-gray-500 flex items-center gap-1 mb-4">
+      <button onClick={onBack} className="mb-4 inline-flex items-center gap-1 text-sm text-gray-500 hover:text-gray-700">
         <ArrowLeft className="w-4 h-4" /> 返回检索
       </button>
 
-      <div className="bg-white border rounded-lg p-5">
+      <div className="card p-6 animate-fade-up">
         <div className="flex items-start justify-between gap-4">
-          <h1 className="text-xl font-semibold text-gray-800">{p.name}</h1>
-          <span className="shrink-0 text-xs bg-emerald-50 text-emerald-700 rounded px-2 py-1">
+          <h1 className="text-2xl font-semibold tracking-tight text-gray-900">{p.name}</h1>
+          <span className="shrink-0 rounded-full border border-brand-100 bg-brand-50 px-2.5 py-1 text-xs font-medium text-brand-700">
             质量分 {Math.round(p.quality_score * 100)}
           </span>
         </div>
@@ -107,7 +107,7 @@ export default function ProductView({ id, onBack }: { id: string; onBack: () =>
       </div>
 
       {p.specs && p.specs.length > 0 && (
-        <div className="bg-white border rounded-lg p-5 mt-4">
+        <div className="card p-6 mt-4">
           <h2 className="font-medium text-gray-700 mb-2">规格参数</h2>
           <div className="grid grid-cols-1 sm:grid-cols-2 gap-2 text-sm">
             {p.specs.map((s) => (
@@ -124,7 +124,7 @@ export default function ProductView({ id, onBack }: { id: string; onBack: () =>
       )}
 
       {nutriEntries.length > 0 && (
-        <div className="bg-white border rounded-lg p-5 mt-4">
+        <div className="card p-6 mt-4">
           <h2 className="font-medium text-gray-700 mb-2">
             营养成分
             {p.nutrition_basis ? `（${basisLabel[p.nutrition_basis] || p.nutrition_basis}）` : ""}