# markdown test artifacts

---

## 1. headers
# h1: the quick brown fox
## h2: jumps over
### h3: the lazy dog
#### h4: 42
##### h5: why not
###### h6: minimum viable header

---

## 2. text formatting
**bold**, *italic*, ***bold italic***, ~~strikethrough~~, `inline code`, ==highlight== (if supported).

---

## 3. lists
### unordered
- top level
  - nested
    - deeply nested
- back to top

### ordered
1. first
   1. nested first
   2. nested second
2. second
3. third

### task lists
- [ ] unchecked
- [x] checked
- [ ] partially done (if supported)

---

## 4. code blocks
### inline `code` example

### fenced blocks
```python
def factorial(n):
    return 1 if n <= 1 else n * factorial(n - 1)
```

```bash
# shebang test
#!/bin/bash
echo "hello world"
```

```
plaintext with no language
  preserves   spaces and newlines
```

---

## 5. tables
| syntax      | description | test |
|-------------|-------------|------|
| header      | title       | here |
| paragraph   | text        | more |
| `code`      | **bold**    | *italics* |

---

## 6. blockquotes
> single line

> multi-line
> continuation
>> nested blockquote

---

## 7. horizontal rules
text
---
text
***
text
___

---

## 8. links & images
[regular link](https://example.com)

[reference-style link][1]

[1]: https://example.com "title"

![image alt](https://via.placeholder.com/150 "placeholder")

---

## 9. footnotes
here's a footnote[^1].

[^1]: this is the footnote text.

---

## 10. html (if supported)
<span style="color: red">red text</span>
<br>
<button disabled>interactive (but not here)</button>

---

## 11. edge cases
### whitespace
line  with   irregular   spaces

### unicode
emoji: 🚀 ✨ 🦊
symbols: ← ↑ → ↓ ↔ ↕ ⇄ ⇅
math: 30° ½ ¼ ¾ ± × ÷ ≠ ≤ ≥ ≈ ∞

### escapes
\*not bold\* \`not code\` \[not a link\](https://example.com)

### empty elements
[]
()
{}

---

## 12. mixed nesting
1. ordered item
   > with a blockquote
   > - and a nested list
2. another item
   ```
   code block inside list
   ```

---

## 13. long content
lorem ipsum dolor sit amet, consectetur adipiscing elit. sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

---

## 14. definition lists (if supported)
term 1
: definition 1
term 2
: definition 2a
: definition 2b

---

## 15. math (if supported)
$E = mc^2$

$$\int_a^b f(x) dx$$