refactor(frontend): 重构站点数据面板与签到组件

将原有的站点统计卡片重构为bento布局样式，把签到组件内嵌到站点数据面板中，统一UI风格并简化代码结构

frontend/app/globals.css

@@ -605,6 +605,101 @@ h1, h2, h3, h4 {
     white-space: nowrap;
   }
 
+  /* 站点数据 bento 统计瓦片 */
+  .j13-pulse {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 8px;
+  }
+  .j13-pulse-cell {
+    min-width: 0;
+    padding: 11px 12px 10px;
+    background: var(--panel-2);
+    border: 1px solid var(--line);
+    border-radius: var(--r-sm);
+  }
+  .j13-pulse-lab {
+    display: flex;
+    align-items: center;
+    gap: 5px;
+    font-size: 11.5px;
+    color: var(--ink-3);
+    white-space: nowrap;
+  }
+  .j13-pulse-num {
+    margin-top: 6px;
+    font-size: 21px;
+    font-weight: 800;
+    line-height: 1.05;
+    letter-spacing: -0.015em;
+    color: var(--ink);
+    font-variant-numeric: tabular-nums;
+  }
+  .j13-pulse-foot {
+    display: flex;
+    align-items: center;
+    gap: 3px;
+    margin-top: 6px;
+    font-size: 10.5px;
+    line-height: 1;
+    color: var(--ink-3);
+    font-variant-numeric: tabular-nums;
+    white-space: nowrap;
+  }
+  .j13-pulse-foot.is-up {
+    color: var(--ok);
+    font-weight: 600;
+  }
+  .j13-pulse-dot {
+    position: relative;
+    width: 6px;
+    height: 6px;
+    border-radius: 9999px;
+    background: var(--ok);
+    flex-shrink: 0;
+  }
+  .j13-pulse-dot::after {
+    content: "";
+    position: absolute;
+    inset: -3px;
+    border-radius: 9999px;
+    background: var(--ok);
+    opacity: 0.4;
+    animation: j13-ping 1.8s cubic-bezier(0, 0, 0.2, 1) infinite;
+  }
+  @keyframes j13-ping {
+    0% { transform: scale(0.6); opacity: 0.5; }
+    70%, 100% { transform: scale(1.9); opacity: 0; }
+  }
+  @media (prefers-reduced-motion: reduce) {
+    .j13-pulse-dot::after {
+      animation: none;
+      opacity: 0.25;
+    }
+  }
+  /* 卡内签到条：分隔线 + 紧凑按钮 */
+  .j13-pulse-checkin {
+    margin-top: 10px;
+    padding-top: 11px;
+    border-top: 1px solid var(--line);
+  }
+  .j13-pulse-checkin-btn {
+    gap: 4px;
+    padding: 6px 11px;
+    font-size: 12px;
+    white-space: nowrap;
+  }
+  .j13-pulse-checkin-done {
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+    padding: 6px 11px;
+    border-radius: 9999px;
+    font-size: 12px;
+    font-weight: 600;
+    white-space: nowrap;
+  }
+
   /* 热门榜单 */
   .j13-rank {
     position: relative;

frontend/app/page.tsx

@@ -201,6 +201,7 @@ export default async function HomePage({ searchParams }: HomePageProps) {
       {overview && (
         <div className="mt-6">
           <CommunityPanelsMobile
+            stats={overview.stats}
             hot={overview.hot}
             activeUsers={overview.active_users}
             announcements={overview.announcements}

frontend/components/home/CheckinCard.tsx

@@ -6,40 +6,16 @@ import { CalendarDays, CalendarCheck, LogIn, Loader2 } from "lucide-react";
 import { apiDoCheckin, type CheckinStatus } from "@/lib/api";
 
 /**
- * 每日签到卡（右栏）。
+ * 每日签到紧凑条，内嵌在右栏「站点数据」卡底部。
  * initial 为 undefined 表示游客；否则为 SSR 注入的登录用户签到状态。
  */
-export default function CheckinCard({ initial }: { initial?: CheckinStatus | null }) {
+export function PulseCheckin({ initial }: { initial?: CheckinStatus | null }) {
   const [status, setStatus] = useState<CheckinStatus | null>(initial ?? null);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState("");
 
-  // 游客态
-  if (initial === undefined) {
-    return (
-      <section className="j13-module" aria-label="每日签到">
-        <div className="flex items-center gap-3">
-          <span
-            className="w-10 h-10 rounded-xl flex items-center justify-center shrink-0"
-            style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
-          >
-            <CalendarDays size={19} />
-          </span>
-          <div className="min-w-0">
-            <p className="text-[14px] font-bold" style={{ color: "var(--ink)" }}>
-              每日签到
-            </p>
-            <p className="meta text-[12px] mt-0.5">登录后每日签到领积分</p>
-          </div>
-        </div>
-        <Link href="/login?redirect=/" className="btn btn-line btn-sm w-full justify-center mt-3.5">
-          <LogIn size={14} /> 登录后签到
-        </Link>
-      </section>
-    );
-  }
-
   const checked = status?.checked_today ?? false;
+  const guest = initial === undefined;
 
   async function doCheckin() {
     if (loading || checked) return;
@@ -55,59 +31,65 @@ export default function CheckinCard({ initial }: { initial?: CheckinStatus | nul
   }
 
   return (
-    <section className="j13-module" aria-label="每日签到">
+    <div aria-label="每日签到">
-      <div className="flex items-center gap-3">
+      <div className="flex items-center gap-2.5">
         <span
-          className="w-10 h-10 rounded-xl flex items-center justify-center shrink-0"
+          className="flex h-8 w-8 shrink-0 items-center justify-center rounded-lg"
           style={{
-            background: checked ? "var(--accent-soft)" : "var(--panel-2)",
+            background: checked || guest ? "var(--accent-soft)" : "var(--tint)",
-            color: checked ? "var(--accent)" : "var(--ink-2)",
+            color: checked || guest ? "var(--accent)" : "var(--ink-2)",
           }}
         >
-          {checked ? <CalendarCheck size={19} /> : <CalendarDays size={19} />}
+          {checked ? <CalendarCheck size={16} /> : <CalendarDays size={16} />}
         </span>
-        <div className="flex-1 min-w-0">
+        <div className="min-w-0 flex-1">
-          <p className="text-[14px] font-bold" style={{ color: "var(--ink)" }}>
+          <p className="text-[12.5px] font-bold leading-tight" style={{ color: "var(--ink)" }}>
             每日签到
           </p>
-          <p className="meta text-[12px] mt-0.5">
+          <p className="meta mt-0.5 truncate text-[11px]">
-            {checked
+            {guest
-              ? `已连续签到 ${status?.streak ?? 0} 天 · 累计 ${status?.total_points ?? 0} 积分`
+              ? "登录后每日签到领积分"
-              : `连续 ${status?.streak ?? 0} 天 · 今日可得 ${status?.today_points ?? 5} 积分`}
+              : checked
+                ? `连签 ${status?.streak ?? 0} 天 · 累计 ${status?.total_points ?? 0} 积分`
+                : `连签 ${status?.streak ?? 0} 天 · 今日 +${status?.today_points ?? 5}`}
           </p>
         </div>
-        {!checked && (
+        {guest ? (
-          <span className="text-[17px] font-extrabold tabular-nums shrink-0" style={{ color: "var(--accent)" }}>
+          <Link
-            +{status?.today_points ?? 5}
+            href="/login?redirect=/"
+            className="btn btn-line btn-sm j13-pulse-checkin-btn shrink-0"
+          >
+            <LogIn size={13} /> 登录
+          </Link>
+        ) : checked ? (
+          <span
+            className="j13-pulse-checkin-done shrink-0"
+            style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
+          >
+            <CalendarCheck size={12.5} /> 已签
           </span>
-        )}
+        ) : (
-      </div>
-
           <button
             type="button"
             onClick={doCheckin}
-        disabled={loading || checked}
+            disabled={loading}
-        aria-disabled={loading || checked}
+            className="btn btn-primary btn-sm j13-pulse-checkin-btn shrink-0"
-        className={`btn w-full justify-center mt-3.5 ${checked ? "btn-line" : "btn-primary"}`}
           >
             {loading ? (
               <>
-            <Loader2 size={15} className="animate-spin" /> 签到中…
+                <Loader2 size={13} className="animate-spin" /> 签到中
-          </>
-        ) : checked ? (
-          <>
-            <CalendarCheck size={15} /> 今日已签到
               </>
             ) : (
-          "立即签到"
+              `签到 +${status?.today_points ?? 5}`
             )}
           </button>
-
+        )}
+      </div>
       {error && (
-        <p className="text-[12px] mt-2" style={{ color: "var(--clay)" }} role="alert">
+        <p className="mt-1.5 text-[11.5px]" style={{ color: "var(--clay)" }} role="alert">
           {error}
         </p>
       )}
-    </section>
+    </div>
   );
 }

frontend/components/home/CommunityPanels.tsx

@@ -9,6 +9,8 @@ import {
   Megaphone,
   BarChart3,
   PenLine,
+  Activity,
+  TrendingUp,
 } from "lucide-react";
 import type {
   PostListItem,
@@ -19,52 +21,43 @@ import type {
   CheckinStatus,
 } from "@/lib/api";
 import Avatar from "@/components/Avatar";
-import CheckinCard from "./CheckinCard";
+import { PulseCheckin } from "./CheckinCard";
 import { FRIEND_LINKS } from "@/lib/friendLinks";
 import { formatCompact, formatShortDate } from "@/lib/format";
 
-/* ---------- 站点数据（2×2 极简统计表） ---------- */
+/* ---------- 站点数据（2×2 bento 统计瓦片） ---------- */
 
-function StatCell({
+function PulseCard({ stats, checkin }: { stats: OverviewStats; checkin?: CheckinStatus | null }) {
-  index,
+  const cells = [
-  label,
+    {
-  value,
+      icon: <Users size={12.5} />,
-  foot,
+      label: "注册用户",
-}: {
+      value: formatCompact(stats.users),
-  index: number;
+      foot: `+${formatCompact(stats.today_users)} 今日`,
-  label: string;
+      up: true,
-  value: string;
+    },
-  foot: string;
+    {
-}) {
+      icon: <PenLine size={12.5} />,
-  const rightCol = index % 2 === 1;
+      label: "话题总数",
-  const bottomRow = index >= 2;
+      value: formatCompact(stats.posts),
-  return (
+      foot: `+${formatCompact(stats.today_posts)} 今日`,
-    <div
+      up: true,
-      className="min-w-0 py-3.5"
+    },
-      style={{
+    {
-        borderLeft: rightCol ? "1px solid var(--line)" : undefined,
+      icon: <MessageCircle size={12.5} />,
-        borderTop: bottomRow ? "1px solid var(--line)" : undefined,
+      label: "回复总数",
-        paddingLeft: rightCol ? 14 : 0,
+      value: formatCompact(stats.comments),
-        paddingRight: rightCol ? 0 : 14,
+      foot: `+${formatCompact(stats.today_comments)} 今日`,
-      }}
+      up: true,
-    >
+    },
-      <p className="text-[12px]" style={{ color: "var(--ink-3)" }}>
+    {
-        {label}
+      icon: <Activity size={12.5} />,
-      </p>
+      label: "在线用户",
-      <p
+      value: formatCompact(stats.online),
-        className="mt-1.5 text-[20px] font-semibold leading-none tracking-tight tabular-nums"
+      foot: `峰值 ${formatCompact(stats.peak_online)}`,
-        style={{ color: "var(--ink)" }}
+      up: false,
-      >
+    },
-        {value}
+  ];
-      </p>
-      <p className="mt-2 text-[11px] tabular-nums" style={{ color: "var(--ink-3)" }}>
-        {foot}
-      </p>
-    </div>
-  );
-}
-
-function PulseCard({ stats }: { stats: OverviewStats }) {
   return (
     <section className="j13-module" aria-label="站点数据">
       <div className="flex items-center justify-between">
@@ -76,15 +69,29 @@ function PulseCard({ stats }: { stats: OverviewStats }) {
           style={{ color: "var(--ink-3)" }}
           title="近 5 分钟在线"
         >
-          <span className="h-1.5 w-1.5 rounded-full" style={{ background: "var(--ok)" }} />
+          <span className="j13-pulse-dot" aria-hidden="true" />
           实时
         </span>
       </div>
-      <div className="mt-2 grid grid-cols-2">
+      <div className="j13-pulse mt-3">
-        <StatCell index={0} label="注册用户" value={formatCompact(stats.users)} foot={`+${stats.today_users} 今日`} />
+        {cells.map((c) => (
-        <StatCell index={1} label="话题总数" value={formatCompact(stats.posts)} foot={`+${stats.today_posts} 今日`} />
+          <div key={c.label} className="j13-pulse-cell">
-        <StatCell index={2} label="回复总数" value={formatCompact(stats.comments)} foot={`+${stats.today_comments} 今日`} />
+            <p className="j13-pulse-lab" style={{ color: "var(--ink-3)" }}>
-        <StatCell index={3} label="在线用户" value={formatCompact(stats.online)} foot={`峰值 ${formatCompact(stats.peak_online)}`} />
+              <span style={{ color: "var(--accent)" }} aria-hidden="true">
+                {c.icon}
+              </span>
+              {c.label}
+            </p>
+            <p className="j13-pulse-num">{c.value}</p>
+            <p className={`j13-pulse-foot${c.up ? " is-up" : ""}`}>
+              {c.up && <TrendingUp size={10.5} aria-hidden="true" />}
+              {c.foot}
+            </p>
+          </div>
+        ))}
+      </div>
+      <div className="j13-pulse-checkin">
+        <PulseCheckin initial={checkin} />
       </div>
     </section>
   );
@@ -319,9 +326,8 @@ export function CommunityPanels({
   return (
     <aside className="hidden w-[280px] shrink-0 lg:block xl:w-[300px]" aria-label="社区面板">
       <div className="sticky top-24 space-y-4">
-        <PulseCard stats={stats} />
+        <PulseCard stats={stats} checkin={checkin} />
         <Announcements items={announcements} />
-        <CheckinCard initial={checkin} />
         <HotRanking posts={hot} />
         <NewUsers users={newUsers} />
         <ActiveUsers users={activeUsers} />
@@ -332,16 +338,17 @@ export function CommunityPanels({
 }
 
 export function CommunityPanelsMobile({
+  stats,
   hot,
   activeUsers,
   announcements,
   newUsers,
   checkin,
-}: Omit<PanelsProps, "stats">) {
+}: PanelsProps) {
   return (
     <div className="space-y-4 lg:hidden" aria-label="社区面板">
+      <PulseCard stats={stats} checkin={checkin} />
       <Announcements items={announcements} />
-      <CheckinCard initial={checkin} />
       <HotRanking posts={hot} />
       <NewUsers users={newUsers} />
       <ActiveUsers users={activeUsers} />