style: 优化联系页面视觉设计

- 改进联系页面背景渐变效果
- 优化联系组件布局和样式
- 提升用户体验和视觉一致性

src/app/(marketing)/contact/page.tsx

@@ -164,7 +164,7 @@ function ContactFormContent() {
       
       <section className="py-24 relative overflow-hidden" ref={sectionRef}>
         <div className="absolute inset-0 pointer-events-none">
-          <div className="absolute inset-0 bg-gradient-radial from-[rgba(79,70,229,0.03)] via-transparent to-transparent" />
+          <div className="absolute inset-0" style={{ background: 'radial-gradient(ellipse at center, rgba(196,30,58,0.03) 0%, transparent 70%)' }} />
         </div>
 
         <div className="container-wide relative z-10">

src/components/sections/contact-section.tsx

@@ -146,7 +146,7 @@ export function ContactSection() {
         />
       )}
       <div className="absolute inset-0 pointer-events-none">
-        <div className="absolute inset-0 bg-gradient-radial from-[rgba(79,70,229,0.03)] via-transparent to-transparent" />
+        <div className="absolute inset-0" style={{ background: 'radial-gradient(ellipse at center, rgba(196,30,58,0.03) 0%, transparent 70%)' }} />
       </div>
 
       <div className="container-wide relative z-10">