feat :solution intro margin delete

src/css/common.css

@@ -684,7 +684,7 @@ body{overflow-x:hidden;}
    2. intro 
 ════════════════ */
 
-.fc-intro { display: flex; gap: 48px; align-items: center; margin: 0 0 2rem; padding: 60px 0;}
+.fc-intro { display: flex; gap: 48px; align-items: center;  padding: 60px 0;}
 .fc-intro__left { flex: 1; }
 .fc-intro__title { font-size: 2rem; font-weight: 800; color: #1a1f3a; line-height: 1.35; letter-spacing: -0.02em; margin: 16px 0 28px; }
 .fc-intro__desc { font-size: 0.9rem; color: #666; line-height: 1.9; margin-bottom: 48px; }