feat: 添加连锁门店系统首页及核心UI组件

新增首页布局、导航栏、页脚及多个核心UI组件（按钮、卡片、表格等）
添加图片资源、工具函数和样式配置
实现响应式设计和主题支持
包含行业解决方案展示区块

components/sections/cases-section.tsx

@@ -0,0 +1,90 @@
+"use client"
+
+import { Badge } from "@/components/ui/badge"
+import { SectionReveal } from "@/components/ui/section-reveal"
+import { TrendingUp, Quote } from "lucide-react"
+import homeData from "@/data/home.json"
+
+export function CasesSection() {
+  const { cases } = homeData
+  const sectionBadge = (cases as any).sectionBadge ?? (cases as any).sectionTag
+  const caseItems = (Array.isArray((cases as any).items) ? (cases as any).items : []).map((item: any) => ({
+    ...item,
+    result: item.result ?? item.solution ?? "",
+    metrics: Array.isArray(item.metrics)
+      ? item.metrics
+      : (Array.isArray(item.results) ? item.results.map((m: any) => ({ l: m.metric, v: m.value })) : []),
+  }))
+
+  return (
+    <section id="cases" className="section-panel bg-background">
+      <SectionReveal className="w-full max-w-[1440px] mx-auto px-4 sm:px-6 lg:px-8" delay={120}>
+
+        {/* Header */}
+        <div className="text-center max-w-3xl mx-auto mb-16">
+          <Badge variant="secondary" className="mb-4 text-primary border-primary/20 bg-primary/8 px-3 py-1">
+            {sectionBadge}
+          </Badge>
+          <h2 className="text-3xl sm:text-4xl lg:text-5xl font-extrabold text-foreground text-balance tracking-tight mb-4">
+            {cases.title}
+          </h2>
+          <p className="text-muted-foreground text-lg leading-relaxed text-pretty">
+            {cases.subtitle}
+          </p>
+        </div>
+
+        {/* Case cards */}
+        <div className="grid grid-cols-1 lg:grid-cols-12 gap-8 items-stretch">
+          {caseItems.map((c) => (
+            <article
+              key={c.brand}
+              className="group relative flex h-full flex-col lg:col-span-4 bg-white border border-border rounded-[2rem] p-8 hover:shadow-2xl hover:shadow-primary/10 hover:-translate-y-1 transition-all duration-300"
+            >
+              <div className="flex flex-col gap-6 flex-1">
+                {/* Brand & scale */}
+                <div className="flex items-start justify-between gap-3">
+                  <div>
+                    <span className="inline-flex items-center rounded-full bg-primary/8 px-3 py-1 text-xs font-semibold text-primary mb-3">
+                      {c.industry}
+                    </span>
+                    <h3 className="font-bold text-foreground text-xl leading-tight mb-2">{c.brand}</h3>
+                    <span className="inline-flex text-xs text-muted-foreground bg-muted rounded-full px-3 py-1">
+                      {c.scale}
+                    </span>
+                  </div>
+                  <TrendingUp className="w-5 h-5 text-primary shrink-0 mt-0.5" />
+                </div>
+
+                {/* Challenge */}
+                <div>
+                  <p className="text-xs font-semibold text-muted-foreground uppercase tracking-widest mb-1.5">遇到的挑战</p>
+                  <p className="text-sm text-foreground leading-relaxed">{c.challenge}</p>
+                </div>
+
+                {/* Divider */}
+                <div className="border-t border-border" />
+
+                {/* Result */}
+                <div className="flex gap-2">
+                  <Quote className="w-4 h-4 text-primary shrink-0 mt-0.5" />
+                  <p className="text-sm text-muted-foreground leading-relaxed italic">{c.result}</p>
+                </div>
+
+                {/* Metrics */}
+                <div className="grid grid-cols-3 gap-4 mt-auto pt-2">
+                  {c.metrics.map((m) => (
+                    <div key={m.l} className="flex flex-col items-center text-center bg-primary/6 rounded-2xl py-4 px-3">
+                      <span className="text-xl font-black text-primary leading-none mb-1">{m.v}</span>
+                      <span className="text-[10px] text-muted-foreground leading-tight">{m.l}</span>
+                    </div>
+                  ))}
+                </div>
+              </div>
+            </article>
+          ))}
+        </div>
+
+      </SectionReveal>
+    </section>
+  )
+}