feat(energy): 氢能总览删除 4 张 KPI 卡，底部加动态幽默提示

- 删除：年加氢量 / 年加氢费 / 累计羚牛承担 / 本月-今日 四张顶部 KPI 卡
  （及对应的 Skeleton 占位、未用的 Fuel/Wallet/Coins/CalendarClock import 与 fmt 工具函数）
- 新增 RotatingFooterHint：底部居中蓝色脉冲点 + 6 条幽默文案 4s 轮换淡入
  例如「更多统计维度接入中，欢迎您的建议 ~」「数据科学家正在深夜挖掘新维度…」

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/modules/energy/HydrogenOverview.tsx

@@ -1,5 +1,4 @@
 import { useEffect, useState } from 'react';
-import { Fuel, Wallet, Coins, CalendarClock } from 'lucide-react';
 import { BarChart, Bar, XAxis, YAxis, ResponsiveContainer, Cell, PieChart, Pie, Tooltip, LabelList } from 'recharts';
 import { fetchHydrogenOverview, type HydrogenOverviewResponse } from './api';
 
@@ -30,16 +29,15 @@ const REGION_COLORS = [
   '#94a3b8',
 ];
 
-function fmtKg(kg: number) {
-  if (kg >= 1000) return `${(kg / 1000).toFixed(2)}T`;
-  return `${kg.toFixed(2)}Kg`;
-}
-function fmtYuanWan(yuan: number) {
-  return `¥${(yuan / 10_000).toFixed(2)}万`;
-}
-function fmtYuan(yuan: number) {
-  return `¥${yuan.toLocaleString('zh-CN', { maximumFractionDigits: 2 })}`;
-}
+// 幽默动态提示词，每 4 秒轮换一条
+const FOOTER_HINTS = [
+  '更多统计维度接入中，欢迎您的建议 ~',
+  '下一个图表，可能就是您建议的那个',
+  '数据科学家正在深夜挖掘新维度…',
+  '想看哪个角度的数据？告诉我们一下嘛',
+  '维度灵感正在路上，钉一下产品同学也行',
+  '数字背后还有故事，等下一次上线揭晓',
+];
 
 export default function HydrogenOverview() {
   const [data, setData] = useState<HydrogenOverviewResponse | null>(null);
@@ -67,50 +65,6 @@ export default function HydrogenOverview() {
       <div className="bg-white rounded-xl border border-slate-100 px-3 py-1.5 text-[11px] text-slate-400">
         数据自 2025-01-01 起，每 1 分钟更新
       </div>
-      <div className="grid grid-cols-2 md:grid-cols-4 gap-3">
-        {/* 卡 1：年加氢量 */}
-        <div className="bg-gradient-to-br from-cyan-50 to-blue-50 rounded-2xl border border-slate-100 shadow-sm p-4 flex flex-col gap-2">
-          <div className="flex items-center justify-between text-[11px] text-slate-500">
-            <span className="flex items-center gap-1 font-bold"><Fuel size={12} className="text-cyan-600" />年加氢量</span>
-          </div>
-          <div className="text-2xl lg:text-3xl font-bold text-slate-800 leading-tight">{fmtKg(k.yearKg)}</div>
-        </div>
-        {/* 卡 2：年加氢费 */}
-        <div className="bg-gradient-to-br from-blue-50 to-violet-50 rounded-2xl border border-slate-100 shadow-sm p-4 flex flex-col gap-2">
-          <div className="flex items-center justify-between text-[11px] text-slate-500">
-            <span className="flex items-center gap-1 font-bold"><Wallet size={12} className="text-blue-600" />年加氢费</span>
-          </div>
-          <div className="text-2xl lg:text-3xl font-bold text-slate-800 leading-tight">{fmtYuanWan(k.yearFee)}</div>
-        </div>
-        {/* 卡 3：累计羚牛承担 */}
-        <div className="bg-gradient-to-br from-amber-50 to-orange-50 rounded-2xl border border-slate-100 shadow-sm p-4 flex flex-col gap-2">
-          <div className="flex items-center justify-between text-[11px] text-slate-500">
-            <span className="flex items-center gap-1 font-bold"><Coins size={12} className="text-amber-600" />累计羚牛承担</span>
-          </div>
-          <div className="text-2xl lg:text-3xl font-bold text-slate-800 leading-tight">{fmtYuanWan(k.lingniuBornFee)}</div>
-          <div className="text-[11px] text-slate-500 font-bold space-y-0.5">
-            <div>量 <span className="text-slate-700">{fmtKg(k.lingniuBornKg)}</span></div>
-          </div>
-        </div>
-        {/* 卡 4：本月 / 今日 */}
-        <div className="bg-white rounded-2xl border border-slate-100 shadow-sm p-4 flex flex-col gap-2">
-          <div className="flex items-center justify-between text-[11px] text-slate-500">
-            <span className="flex items-center gap-1 font-bold"><CalendarClock size={12} className="text-slate-500" />本月 / 今日</span>
-          </div>
-          <div className="grid grid-cols-2 gap-2">
-            <div>
-              <div className="text-[10px] text-slate-400 font-bold">本月</div>
-              <div className="text-base md:text-lg font-bold text-slate-800">{fmtKg(k.monthKg)}</div>
-              <div className="text-[11px] text-slate-500 font-bold">{fmtYuanWan(k.monthFee)}</div>
-            </div>
-            <div>
-              <div className="text-[10px] text-slate-400 font-bold">今日</div>
-              <div className="text-base md:text-lg font-bold text-slate-800">{fmtKg(k.todayKg)}</div>
-              <div className="text-[11px] text-slate-500 font-bold">{fmtYuan(k.todayFee)}</div>
-            </div>
-          </div>
-        </div>
-      </div>
       <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
         {/* Top5 加氢站 */}
         <div className="bg-white rounded-2xl border border-slate-100 shadow-sm p-4">
@@ -194,6 +148,33 @@ export default function HydrogenOverview() {
           </div>
         </div>
       </div>
+      <RotatingFooterHint />
+    </div>
+  );
+}
+
+function RotatingFooterHint() {
+  const [idx, setIdx] = useState(0);
+  useEffect(() => {
+    const t = setInterval(() => setIdx(i => (i + 1) % FOOTER_HINTS.length), 4000);
+    return () => clearInterval(t);
+  }, []);
+  return (
+    <div className="mt-1 flex items-center justify-center gap-1.5 text-[11px] text-slate-400 font-bold">
+      <span className="inline-block w-1.5 h-1.5 rounded-full bg-blue-400 animate-pulse" />
+      <span
+        key={idx}
+        className="transition-opacity duration-300"
+        style={{ animation: 'hintFade 0.5s ease' }}
+      >
+        {FOOTER_HINTS[idx]}
+      </span>
+      <style>{`
+        @keyframes hintFade {
+          from { opacity: 0; transform: translateY(2px); }
+          to   { opacity: 1; transform: translateY(0); }
+        }
+      `}</style>
     </div>
   );
 }
@@ -206,20 +187,6 @@ function HydrogenOverviewSkeleton() {
         <div className="h-3 w-44 bg-slate-100 rounded" />
       </div>
 
-      {/* 4 张 KPI 卡 */}
-      <div className="grid grid-cols-2 md:grid-cols-4 gap-3">
-        {Array.from({ length: 4 }).map((_, i) => (
-          <div key={i} className="bg-gradient-to-br from-slate-50 to-slate-100/60 rounded-2xl border border-slate-100 shadow-sm p-4 flex flex-col gap-3">
-            <div className="h-3 w-16 bg-slate-200/70 rounded" />
-            <div className="h-7 w-24 bg-slate-200 rounded" />
-            <div className="space-y-1.5 mt-1">
-              <div className="h-2.5 w-20 bg-slate-100 rounded" />
-              <div className="h-2.5 w-24 bg-slate-100 rounded" />
-            </div>
-          </div>
-        ))}
-      </div>
-
       <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
         {/* Top5 占位 */}
         <div className="bg-white rounded-2xl border border-slate-100 shadow-sm p-4">