design: AI 템플릿 패턴 전면 제거 Round 2 + 컨텐츠 정합성 수정

- 홈: hero gradient text → solid #5ba4ff, 토스페이먼츠 tech 제거, 사주 가격 '무료'로 수정
- 사주: CTA 버튼 gradient 제거, radial dots+이모지 CTA 섹션 → diagonal pattern
  유료 카드 gradient+orb 제거, FAQ 유료 언급 수정, 가격 섹션 제목 수정
- freelance: useCounter/StatCard 제거 → 4개 보증 카드로 대체, 모든 gradient 제거
- login: blur orbs 제거, gradient logo/버튼 → solid
- mypage: gradient 헤더/아바타 → solid + diagonal pattern
- DashboardShell: gradient '쟁' 로고 → solid
- automation: gradient step/pricing/CTA → solid
- ai-kit: gradient 배경들 → solid, gradient text → solid red-400

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/mypage/page.tsx

@@ -268,10 +268,10 @@ export default function MyPage() {
       )}
 
       {/* 헤더 */}
-      <div className="bg-gradient-to-br from-[#04102b] via-[#0a1f5c] to-[#04102b] px-6 py-10">
+      <div className="bg-[#04102b] px-6 py-10" style={{ backgroundImage: 'repeating-linear-gradient(135deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 1px, transparent 1px, transparent 40px)' }}>
         <div className="max-w-4xl mx-auto">
           <div className="flex items-center gap-4">
-            <div className="w-14 h-14 rounded-full bg-gradient-to-br from-blue-400 to-violet-500 flex items-center justify-center text-white text-xl font-bold shadow-lg flex-shrink-0">
+            <div className="w-14 h-14 rounded-full bg-[#1a56db] flex items-center justify-center text-white text-xl font-bold flex-shrink-0">
               {user.email?.[0].toUpperCase()}
             </div>
             <div>