diff --git a/README.md b/README.md
index 0dce326..d2a444e 100644
--- a/README.md
+++ b/README.md
@@ -8,35 +8,38 @@ This site is not just a portfolio — it acts as an entry point into a larger ec
 
 ## Overview
 
-The site is divided into three conceptual layers:
+The site is divided into two conceptual layers:
 
-### 1. Home
+### 1. Tabs (Home)
 
-The homepage provides a high-level overview of who I am and what I work on.  
-It highlights selected projects and core skills, without listing everything.
+The homepage provides tabs for three sections:
+
+- **Projects** — fetches and renders READMEs from self-hosted Forgejo repositories via raw URL
+- **Current-activity** — language learning progress and active work
+- **About** — personal background, philosophy, and Q&A
 
 ### 2. Header
 
-The header serves as a navigation layer into my self-hosted infrastructure.  
-Each entry links to a running instance.
+The header serves as a navigation layer into my self-hosted infrastructure. Each entry links to a running instance.
 
 - Nextcloud — file storage and synchronization
 - Navidrome — personal music streaming
-- Forgejo — Git hosting and development platform
-- OmniSearch — privacy-focused search engine
-- Stream service — live media platform powered by MediaMTX
-- Friend’s Gitea instance — external development collaboration
+- Forgejo Git — Git hosting and development platform
+- Stream — live media platform powered by MediaMTX (internal route)
+- Omnisearch — privacy-focused search engine
+- Gitea zach-dev — external development collaboration
 
-These services are part of my personal infrastructure and exist outside the portfolio itself.
+## Stack
 
-### 3. Pages
-
-Dedicated pages for deeper content:
-
-- Projects — selected work and builds
-- Systems — architecture and self-hosted infrastructure overview
-- About — personal background and context
-- CV — formal resume (if applicable)
+| Layer     | Choice                       | Notes                                     |
+| --------- | ---------------------------- | ----------------------------------------- |
+| Language  | TypeScript / React 19        | Vite 8 + rolldown                         |
+| CSS       | TailwindCSS v4               | Catppuccin macchiato/latte                |
+| Markdown  | react-markdown v10           | remark-gfm, rehype-raw, rehype-sanitize   |
+| Syntax HL | Shiki v4                     | Catppuccin themes, CSS variable switching |
+| Font      | Inter (self-hosted, 4 WOFF2) | no Google Fonts                           |
+| Theme     | Catppuccin macchiato/latte   | JS toggle, persisted to localStorage      |
+| Git host  | Forgejo (self-hosted)        | git.aramjonghu.dev                        |
 
 ## Philosophy
 
@@ -51,19 +54,21 @@ Instead of a traditional portfolio, it focuses on:
 
 It evolves alongside my personal development and technical interests.
 
-## Stack
+## Project layout
 
-- React
-- Vite
-- Tailwind CSS
-- Catppuccin theme
-- Self-hosted backend services (Forgejo, Nextcloud, etc.)
-
-## Status
-
-This site is continuously evolving and serves as both a portfolio and experimental environment.
-
-Expect structural changes as systems grow.
+```
+├── public/               favicon
+├── src/
+│   ├── assets/           images, fonts, logo
+│   ├── components/       MdProcessor, Header, Layout, ProjectInfo, ...
+│   ├── content/          about.md, current-activity.md, projects.json
+│   ├── hooks/            useTheme
+│   ├── pages/            Home
+│   └── utils/            theme, highlighter
+├── index.html
+├── package.json
+└── LICENSE
+```
 
 ## License