Docs: update landing page

docs/README.md

@@ -3,22 +3,17 @@
 This website provides technical documentation for the [`benefits`][benefits-repo] application from the
 [California Integrated Travel Project (Cal-ITP)][calitp].
 
-Documentation for the `dev` (default) branch is available online at: <https://docs.calitp.org/benefits>.
+![Cal-ITP Benefits - Landing - Laptop+Mobile](https://github.com/cal-itp/benefits/assets/6279581/3f5c558b-ad45-49cd-bb51-b230c625837b)
 
-## Overview
-
-Cal-ITP Benefits is an application that enables automated eligibility verification and enrollment for transit
-benefits onto customers' existing contactless bank (credit/debit) cards.
+[Cal-ITP Benefits](https://benefits.calitp.org) is a web application that enables digital eligibility verification and enrollment for transit benefits onto transit riders’ existing contactless debit and credit cards.
 
 The development of this publicly-accessible client is being managed by Caltrans' California Integrated Travel Project (Cal-ITP), in partnership with the California Department of Technology (CDT). From the [Cal-ITP site](https://www.calitp.org/):
 
 > Our Cal-ITP Benefits web application streamlines the process for transit riders to instantly qualify for and receive discounts, starting with Monterey-Salinas Transit (MST), which offers a half-price Senior Fare. Now older adults (65+) who are able to electronically verify their identity are able to access MST's reduced fares without the hassle of paperwork.
 >
 > We worked with state partners on this product launch, and next we're working to bring youth, lower-income riders, veterans, people with disabilities, and others the same instant access to free or reduced fares across all California transit providers, without having to prove eligibility to each agency.
 
-The application is accessible to the public at [benefits.calitp.org](https://benefits.calitp.org).
-
-### Adoption by transit agencies
+## Adoption by transit agencies
 
 The following California transit agencies have launched Cal-ITP Benefits for their riders, with the following enrollment pathway options:
 
@@ -28,7 +23,7 @@ The following California transit agencies have launched Cal-ITP Benefits for the
 | **Santa Barbara Metropolitan Transit District** | Live         | In test     |          | 10/2023               |
 | **Sacramento Regional Transit District**        | In test      |             |          |                       |
 
-### Supported enrollment pathways
+## Supported enrollment pathways
 
 The Cal-ITP Benefits app supports the following enrollment pathways that use the corresponding eligibility verification methods:
 
@@ -40,9 +35,9 @@ The Cal-ITP Benefits app supports the following enrollment pathways that use the
 
 Read more about each [enrollment pathway](/benefits/enrollment-pathways/).
 
-## Technical details
+## Technical and security details
 
-`benefits` is a [Django 5][django] web application. The application talks to one or more [Eligibility Verification APIs](https://docs.calitp.org/eligibility-api/specification) or authentication providers. These APIs and the application are
+`benefits` is a [Django 5][django] web application. The application talks to one or more [Eligibility Verification APIs](https://docs.calitp.org/eligibility-api/specification) or authentication providers. These APIs and the application itself are
 designed for privacy and security of user information:
 
 - The API communicates with signed and encrypted JSON Web Tokens containing only the most necessary of user data for the purpose of eligibility verification
@@ -56,11 +51,7 @@ The user interface and content is available in both English and Spanish. Additio
 
 The application communicates with external services like [Littlepay][littlepay] via API calls and others like the [Identity Gateway](https://dev.auth.cdt.ca.gov) via redirects, both over the public internet. See [all the system interconnections][interconnections].
 
-## Security
-
-Cal-ITP takes security and privacy seriously. Below is an overview of how the system is designed with security in mind.
-
-### Architecture
+### Infrastructure
 
 The Benefits application is deployed to Microsoft Azure. Traffic is encrypted between the user and the application, as well as between the application and external systems.
 
@@ -72,7 +63,7 @@ You can find more technical details on [our infrastructure page](deployment/infr
 
 The Benefits application doesn't collect or store any user data directly, and we minimize the information exchanged between systems. The following information is temporarily stored in an encrypted session in the user's browser:
 
-- The user's progress
+- The user's progress through an enrollment pathway
 - Credentials for interacting with the eligibility verification services
 
 Sensitive user information exists in the following places:
@@ -88,7 +79,7 @@ Learn more about the security/privacy practices of some of our third-party integ
 - [Littlepay](https://littlepay.com/privacy-policy/)
 - [Login.gov](https://www.login.gov/policy/)
 
-Benefits collects analytics on usage, without any identifying information. ([IP addresses are filtered out.](https://github.com/cal-itp/benefits/blob/3a5f7c28036b77355d7a137df4f33bd2a9362de1/benefits/core/templates/core/includes/analytics.html#L31))
+Benefits collects analytics on usage, without any identifying information. You can find more details on [our analytics page](product-and-design/analytics/).
 
 ### Practices