diff --git a/src/stlp/website-tech-plan.md b/src/stlp/website-tech-plan.md
index f795e33..9f7f3e4 100644
--- a/src/stlp/website-tech-plan.md
+++ b/src/stlp/website-tech-plan.md
@@ -7,8 +7,8 @@ Phase 0 (same day)
 - Domain: confirm and point DNS.
 - Single-page site: static page (e.g., simple HTML/Bootstrap or lightweight Astro/Vite) deployed on your existing infra.
 - Intake: embedded Typeform/Tally (file upload enabled) or simple HTML form to inbox.
-- Payments: Stripe Payment Links for 3 starter SKUs; add “custom quote” CTA.
-- Analytics: Matomo tag + a basic goal (form submitted / payment link click).
+- Payments: Hyperswitch (self‑hosted) using Stripe as the initial processor. Expose simple “Pay Now” links or a minimal checkout that creates a payment intent via Hyperswitch and redirects to card entry.
+- Analytics: Matomo tag + a basic goal (form submitted / checkout start / success).
 
 Phase 1 (week 2)
 - Add product tiles (entry/core offers) with price ranges, FAQs, materials allowed/disallowed.
@@ -16,10 +16,17 @@ Phase 1 (week 2)
 - Add gallery from portfolio folder.
 
 Phase 2 (weeks 3–4)
-- Migrate to a simple storefront if needed: Shopify or a static-site + Snipcart/Stripe checkout.
+- Migrate to a simple storefront if needed: keep self-hosting; use static site + Hyperswitch checkout or a lightweight headless cart.
 - File handling: gated upload after order (order # + file link) to reduce spam.
 - CRM: push leads/orders to Dolibarr (optional if it slows us down).
 
+Hyperswitch MVP Architecture
+- Host Hyperswitch (Docker) behind your existing reverse proxy. Configure OIDC admin access.
+- Processors: start with Stripe credentials; expand to additional PSPs later. Routing stays in Hyperswitch.
+- Server endpoint: tiny service to create payment intents via Hyperswitch API for fixed SKUs and custom quotes.
+- Client: simple button → calls server → redirects to Hyperswitch-hosted entry or embeds minimal card form.
+- Events: record checkout start/success to Matomo with order/quote IDs.
+
 SEO/Local
 - Google Business Profile: ensure NAP consistent with site footer; add UTM links.
 - On-page basics: title/description, H1 for “Custom laser, embroidery, CNC in Pflugerville, TX”.