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/solution-value.tsx

@@ -20,14 +20,12 @@ export function SolutionValueSection({ solution }: SolutionValueSectionProps) {
     <section className="relative bg-white py-24 lg:py-32 overflow-hidden">
       <div className="container-wide relative">
         <SectionHeader
-          badge="解决方案"
           title={
             <>
               为<span className="text-brand">{solution.industry}</span>量身定制
             </>
           }
           subtitle={solution.description}
-          icon={Lightbulb}
         />
 
         <div className="grid grid-cols-1 lg:grid-cols-2 gap-10 mt-16">