Scalable App for Sector-Based digital Services

I want to create new app.
the first dropdown should be *Sector*.

This makes the 4-step flow cleaner and scalable.

*RECOMMENDED: SECTOR DROPDOWN - STEP 1*

Here are the 6 main sectors you should keep:

*1. Banking*
All Banks: HDFC, SBI, ICICI, PNB, BOB, Axis, Kotak
Covers: Account, ATM, Loan, NetBanking, FD

*2. Insurance*
Life: LIC, HDFC Life, ICICI Prudential
Health: Star Health, ICICI Lombard, Niva Bupa
Vehicle: Bajaj Allianz, TATA AIG
Covers: New Policy, Claim, Premium, Nominee

*3. Loan & NBFC*
Banks + NBFC: Bajaj Finserv, HDB, Tata Capital, Poonawalla
Covers: Personal Loan, Home Loan, Business Loan, LAP, Balance Transfer

*4. Government Services*
Central: PAN, Aadhaar, Passport, Income Tax, GST
State: RTO-DL, Birth/Death Certificate, Electricity, Water
Covers: New, Update, Download, Correction

*5. Investment*
MF, Share Market: Zerodha, Groww, ICICI Direct
Govt: PPF, NPS, RD
Covers: New SIP, KYC, Redeem, Demat Opening

*6. Other Services*
Utility: Electricity New Connection, Gas
Travel: Visa, Flight IRCTC
Legal: Agreement, Notary, Rent Agreement

---

*Updated 4-Step Flow*

*Step 1: Select Sector* → `Banking`
*Step 2: Select Company/Bank* → `HDFC Bank`
*Step 3: Select Product/Category* → `Deposit Products`
*Step 4: Select Exact Issue* → `ATM PIN Generation`

*Result Page*: Guide + Blank PDF + Sample PDF + WhatsApp

---

main.dart
│ ├── screens/
│ │ ├── splash_screen.dart
│ │ ├── login_screen.dart
│ │ ├── home_screen.dart
│ │ ├── sector_screen.dart
│ │ ├── company_screen.dart
│ │ ├── product_screen.dart
│ │ ├── issue_screen.dart
│ │ ├── solution_screen.dart
│ │ ├── video_screen.dart
│ │ ├── pdf_viewer_screen.dart
│ │ ├── search_screen.dart
│ │ ├── bookmarks_screen.dart
│ │ ├── profile_screen.dart
│ │ └── settings_screen.dart
│ ├── admin/
│ ├── models/
│ ├── services/
│ ├── widgets/
│ └── firebase/
├── assets/
├── pdfs/
├── videos/
└── pubspec.yaml