--- name: vietnamese-landing-copy description: Writes, optimizes, and audits high-converting native Vietnamese (vi-VN) landing pages and digital marketing copy across 6 critical verticals — SaaS/AI developer tools, FinTech & digital banking, E-Commerce & D2C, Real Estate & luxury hospitality, Healthcare & aesthetics, and Enterprise B2B solutions. Master of Persuade-mode scroll architecture, benefit-driven Hero headline formulas, conventional CTAs, lead-form PDPA consent (Luật 91/2025/QH15 & Nghị định 356/2025/NĐ-CP), statutory e-commerce footer disclosures (Nghị định 52/2013/NĐ-CP & 85/2021/NĐ-CP Bộ Công Thương), and typography/locale gates. Fixes translationese calques, passive agent corruptions, illegal advertising superlatives, and broken Unicode or number formatting. license: PolyForm-Shield-1.0.0 metadata: version: "2.0.0" repository: "https://github.com/jangtrinh/design-os-vietnamese" --- # Vietnamese Landing Page & Conversion Copycraft (`vi-VN`) In Vietnamese digital commerce, unassisted Large Language Models default to English-calqued translationese: grammatically passable on the surface, but unmistakably robotic to native readers. LLMs routinely invert noun-modifier word orders, paste passive English syntax (*"được thiết kế bởi"*), pick inappropriate pronouns (*"chúng ta"* instead of *"chúng tôi"*), calque conversion CTAs (*"Học thêm"*, *"Bắt đầu được"*), write illegal unproven superlatives (*"số 1"*, *"tốt nhất"*), and corrupt currency formatting. This skill equips DESIGN:OS agents with deep, culturally calibrated, legally compliant copywriting mastery that maximizes conversion and reinforces brand authority across all Vietnamese digital surfaces. --- ## 1. The 4 Non-Negotiable Laws of Vietnamese Conversion 1. **Law 1: The Pronoun Determines Brand Identity (`Register Matrix`).** Vietnamese possesses no neutral, universal "you". The choice of reader address (`hô`) and self-reference (`xưng`) is the primary architectural decision: - **Real Estate / Luxury / Private Banking (`re`):** Address the visitor strictly as `Quý khách`. High Hán-Việt ratio (70%+). - **SaaS / AI / Tech Consumer (`saas`):** Address the visitor as `bạn`. Active, modern Thuần Việt verbs. Action buttons omit pronouns entirely. - **B2B Enterprise (`b2b` / `consult`):** Address as `Quý doanh nghiệp` or `Anh/Chị`. - **Exclusive Corporate Self-Reference:** A business always introduces itself as `chúng tôi` (exclusive "we"), never `chúng ta` (inclusive "we"). - *Failure Mode:* Mixing registers within the same page (`PRO001` / `PRO002`) destroys trust immediately. 2. **Law 2: Natural Vietnamese Grammar & Active Voice.** - **Modifier Follows Noun:** Always `căn hộ cao cấp`, `giải pháp toàn diện`, never `cao cấp căn hộ`. - **Recast English Passives (`LND001`):** Replace passive agent constructions (*"được thiết kế bởi X"*, *"được xây dựng bởi Y"*) with active Vietnamese frames: *"Do X thiết kế"*, *"X kiến tạo"*. - **Classifier Discipline:** Always pair numbers and assets with native classifiers: `căn hộ`, `toà tháp`, `nền đất`, `gói dịch vụ`. 3. **Law 3: Zero Unsubstantiated Superlatives (`LAW001`).** Under **Điều 8 khoản 11 Luật Quảng cáo 16/2012/QH13**, claiming `số 1`, `tốt nhất`, `duy nhất`, or `hàng đầu` without a certified market survey or official award certificate is illegal and penalized up to **200.000.000 ₫**. Replace rankings with countable facts (*"Được hơn 50.000 doanh nghiệp tin dùng"*) or aspirational statements. 4. **Law 4: Absolute Statutory Compliance for Leads & Footers.** - **PDPA Lead Forms (`LND002`):** Under **Luật Bảo vệ dữ liệu cá nhân 91/2025/QH15 & Nghị định 356/2025/NĐ-CP** (Điều 9; NĐ 356 Điều 6), personal data capture forms must feature an un-ticked consent checkbox, an explicit processing purpose statement, and a direct link to `Chính sách bảo mật`. - **E-Commerce Footers (`LND003`):** Under **Nghị định 52/2013/NĐ-CP & 85/2021/NĐ-CP**, online commerce footers must show company name, Tax Code / Enterprise Registration Number (`MST / Mã số doanh nghiệp`), registered headquarters address, and the verified `Đã thông báo Bộ Công Thương` badge. --- ## 2. The 6 Vertical Conversion Playbooks For complete domain playbooks, read **[references/vertical-playbooks.md](references/vertical-playbooks.md)**: | Vertical | Register | Key Tonality & Vocabulary | Primary Conversion Goal | |---|---|---|---| | **1. SaaS & AI** | `saas` (`bạn`) | Direct, benefit-first, active verbs (*Tự động hóa, Tối ưu, Đồng bộ*), no-credit-card assurance. | Free trial / Interactive product demo | | **2. FinTech & Banking** | `saas` or `re` | Fiduciary prudence, security certifications (PCI DSS, NHNN), transparent fee/interest disclosures. | KYC completion / Account registration | | **3. E-Commerce / D2C** | `saas` / `ux-microcopy` | High urgency, clear logistics promises (*Freeship, Đồng kiểm, Đổi trả 30 ngày*), statutory MOIT badge. | Immediate add-to-cart & checkout | | **4. Real Estate / Luxury** | `re` (`Quý khách`) | Ornate Hán-Việt prestige vocabulary (*Kiến tạo, An cư, Tọa độ kim cương*), mandatory render disclaimers. | Inbound consultation / Showroom booking | | **5. Healthcare / Aesthetics** | `healthcare` (`Quý khách`) | Clinical reassurance, verified medical credentials, FDA/MOH compliance, functional food disclaimers. | Specialist consultation booking | | **6. Enterprise B2B** | `b2b` (`Quý doanh nghiệp`) | ROI quantification, operational risk reduction, SLA 99,95%, ISO certifications. | RFP submission / In-depth consultation | --- ## 3. Persuade-Mode Scroll Architecture Every high-performing Vietnamese landing page is structured across 10 progressive psychological milestones: 1. **Hero Section:** High-contrast outcome headline, benefit subhead, dual CTAs, metric trust badge. 2. **Social Proof Bar:** High-profile client logos, banking partners, or media features. 3. **Problem Agitation:** Concrete friction points in current Vietnamese business or life workflows. 4. **Core Value Proposition:** Visual product capability reveal with tangible efficiency gains. 5. **Feature Deep Dives:** Alternating 2-column breakdowns with actual UI screenshots. 6. **Quantitative Testimonials:** Verified quotes with real names, titles, and company affiliations. 7. **Transparent Pricing / Masterplan:** Grouped pricing (`299.000 ₫/tháng`) or project phasing table. 8. **Objection FAQ:** Collapsible accordion resolving refund, implementation, and privacy questions. 9. **Lead Capture Form:** PDPA-compliant dual-checkbox consultation form (`LND002`). 10. **Statutory Footer:** Full corporate entity details and Ministry of Industry and Trade notice (`LND003`). See **[references/register-guide.md](references/register-guide.md)** for detailed section-by-section copywriting rhythm. --- ## 4. Hero Headline & CTA Formulas ### Hero Headline Blueprints - **Outcome-First (SaaS & B2B):** > `[Hành động cốt lõi]` + `[Kết quả đột phá]` + `[Rào cản được xóa bỏ]` > *Ví dụ:* *"Tự động hóa đối soát thanh toán đa kênh chỉ trong 3 phút mỗi ngày. Không cần thẻ tín dụng."* - **Aspirational Prestige (Real Estate & Luxury):** > `[Động từ kiến tạo]` + `[Không gian sống định danh]` + `[Vị trí biểu tượng]` > *Ví dụ:* *"Kiến tạo chốn an cư thịnh vượng giữa trung tâm tài chính Thủ Thiêm."* - **Direct Metric (FinTech & Commerce):** > `[Chỉ số đo lường được]` + `[Giải pháp an toàn]` + `[Bảo chứng pháp lý]` > *Ví dụ:* *"Tích lũy sinh lời 6,5%/năm. Rút tiền tức thì 24/7, bảo chứng bởi ngân hàng lưu ký."* ### Conventional CTA Master List Never translate CTAs literally from English. Use the settled conventions from **[references/glossary.md](references/glossary.md)**: | English Intent | ❌ Machine Calque | ✅ Native Conversion Standard | |---|---|---| | Get started | `Bắt đầu được` | `Bắt đầu ngay` / `Trải nghiệm ngay` | | Learn more | `Học thêm` | `Tìm hiểu thêm` / `Khám phá ngay` | | Book a demo | `Đặt sách bản demo` | `Đặt lịch trải nghiệm` / `Đăng ký demo` | | See details | `Nhìn chi tiết` | `Xem chi tiết` | | Request a quote | `Yêu cầu một trích dẫn` | `Yêu cầu báo giá` / `Nhận báo giá chi tiết` | | Register now | `Đăng ký bây giờ` | `Đăng ký ngay` / `Đăng ký nhận tư vấn` | | Buy now | `Mua bây giờ` | `Mua ngay` / `Đặt mua ngay` | | Add to cart | `Thêm vào xe đẩy` | `Thêm vào giỏ hàng` | --- ## 5. Automated Validation & Quality Gates Run the built-in validator on every landing page markdown, HTML, or JSON file before shipping: ```bash # Validate landing page copy with strict enforcement python scripts/validate_copy.py path/to/landing.md --doctype hero --register saas --strict # Validate pricing tables python scripts/validate_copy.py path/to/pricing.md --doctype pricing-table # Validate e-commerce footers python scripts/validate_copy.py path/to/footer.html --doctype ecommerce-footer # Validate lead forms python scripts/validate_copy.py path/to/lead-form.html --doctype lead-form ``` ### Reference Documentation Library - **[references/glossary.md](references/glossary.md):** 60+ machine-readable UI and CTA translation mappings. - **[references/banned-phrases.md](references/banned-phrases.md):** 30+ calque rules and 13+ regulated superlative regexes. - **[references/register-guide.md](references/register-guide.md):** Hán-Việt prestige axis, classifier discipline, and Persuade-mode rhythm. - **[references/vertical-playbooks.md](references/vertical-playbooks.md):** Deep tactical playbooks for 6 core industries. - **[references/legal-copy.md](references/legal-copy.md):** Production PDPA lead form and e-commerce footer statutory templates. - **[references/qa-checklist.md](references/qa-checklist.md):** 6-point native editorial review rubric. - **[references/locale-formatting.md](references/locale-formatting.md):** Standard Vietnamese currency, date, time, and address rules. - **[references/unicode-and-tone.md](references/unicode-and-tone.md):** Precomposed NFC normalization and tone-mark consistency.