feat(content): deepen Bain differentiation across product, solution and service pages

- Replace decorative numbering and side-stripe borders with structured copy
- Add scenario positioning, capability metrics and verifiable dimensions
- Refine service timelines, deliverables and case-study narratives
- Update content constants to support CMS seeding

src/components/detail/service-value.tsx

@@ -25,10 +25,8 @@ export function ServiceValueSection({ service }: ServiceValueSectionProps) {
     <section className="relative bg-white py-24 lg:py-32 overflow-hidden">
       <div className="container-wide relative">
         <SectionHeader
-          badge="专业服务"
           title={`为什么选择我们的${service.title}？`}
           subtitle={service.overview}
-          icon={Zap}
         />
 
         <div className="mt-16">
@@ -159,10 +157,8 @@ export function ServiceValueSection({ service }: ServiceValueSectionProps) {
                     }}
                     className="relative flex gap-6 group"
                   >
-                    <div className="relative z-10 shrink-0">
-                      <div className="w-16 h-16 rounded-full bg-white border-4 border-brand flex items-center justify-center shadow-md group-hover:scale-110 transition-transform duration-300">
-                        <span className="text-lg font-bold text-brand">{String(index + 1).padStart(2, '0')}</span>
-                      </div>
+                    <div className="relative z-10 shrink-0 w-16 flex justify-center">
+                      <div className="w-4 h-4 rounded-full bg-brand group-hover:scale-110 transition-transform duration-300" />
                     </div>
 
                     <TiltCard