Anatomy of a Modern Engineering Post on y7.hk

This article collects every single visual, typographic, and media feature of our article rendering engine.

1. Callouts and Asides

Callouts follow the site’s overall monochrome style — clean inset blocks, no traffic-light rainbow of colored borders:

2. Images and Media

Comparing two variants (media grid)

A two-image grid for comparing “Before” and “After” interfaces:

Author’s live video avatar

A circular video component integrated into the card interface:

Yakushev Hermann

Product Engineer · Southeast Asia

/me.mp4

3. Code, Diff Patches, and Terminal

Refactoring diff patch

Inserted lines are highlighted in a soft emerald, removed lines in a muted red:

  export async function handleRequest(req: Request): Promise<Response> {
-   const legacyToken = req.headers.get("x-legacy-token");
-   if (!legacyToken) return new Response("Unauthorized", { status: 401 });
+   const authSession = await verifyAgentSession(req);
+   if (!authSession.valid) {
+     return Response.json({ error: "Session expired" }, { status: 403 });
+   }

    return await processWorkflow({
-     mode: "sync",
+     mode: "streaming-duplex",
      timeout: 30000,
    });
  }

Terminal command (Bash)

The $ prompt symbol isn’t copied to the clipboard, thanks to the user-select: none selector:

git clone https://github.com/yakushev/Y.git && cd Y
npm install
npm run build

4. Math and KaTeX Formulas

Display math

Complex formulas render with horizontal scrolling support on mobile devices:

\mathcal{L}_{\text{total}} = \alpha \cdot \mathbb{E}_{x \sim p_{\text{data}}}\left[\log D(x)\right] + \beta \cdot \sum_{i=1}^{N} \left\| \nabla_x f(x_i) \right\|_2^2

The Transformer Attention formula¹:

\text{Attention}(Q, K, V) = \text{softmax}\left(\frac{QK^T}{\sqrt{d_k}}\right)V

Inline formulas

Math symbols and equations right inside the text: e^{i\pi} + 1 = 0, matrix multiplication A \times B \in \mathbb{R}^{m \times p}, and the gradient norm \|\nabla \theta\| \le \epsilon.

5. Tables with Scroll Support

Tables are automatically wrapped in a responsive scroll container and stay readable on smartphones:

6. Collapsible Spoilers (<details>)

Interactive accordions for hiding logs or optional fragments:

{
  "id": "chatcmpl-98a72b",
  "model": "deepseek-r1",
  "choices": [
    {
      "message": {
        "role": "assistant",
        "content": "Pattern validated successfully."
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 128,
    "completion_tokens": 42
  }
}

7. Checklists and Hotkeys

A task list in Markdown format:

• Colored callout support configured
• Diff code highlighting implemented
• KaTeX math formulas integrated
• Serif / Sans font switcher added
• <figcaption> captions styled for media files
• Interactive 3D canvas scenes planned

Hotkeys for control:

• Press ⌘ + K for global search.
• Press ~ to open the console.
• Press Esc to close any popup.

8. Quotes with Attribution

Design is not just what it looks like and feels like. Design is how it works. Steve Jobs

9. Academic Footnotes

Text with a reference to the original transformers paper². Clicking the footnote number instantly takes you to the footnote panel at the bottom, and clicking the ↩ arrow icon returns you exactly to where you were reading.