400-600 words, HTML structure with

. Need to start with

maybe heading? The instruction: "HTML:

." That seems ambiguous; perhaps they want article start with

... Actually they wrote: "HTML:

." Probably means start with

... We'll follow: start with

... but we need to include heading tags appropriately. Maybe start with

... The

should contain the headline? Or a bold italic? Let's parse: They want the article to be formatted with HTML headings. They gave a pattern: "

." So likely the first line is a paragraph containing an h2 with strong and em? Actually

can't contain

. Probably they want to open with

then

... but it's ambiguous. I think they want something like:

Heading

But they wrote only opening tags, not closing. Might just want to start with

(then content) ... and later close properly. Simplify: We'll output the story in HTML as per pattern: start with "

" then headline? Actually the

should be used later for sections. The specification says: "Aufbau: Lede-Absatz ->

Hintergruende

->

Reaktionen aus dem In- und Ausland

->

Ausblick

". So we need to have sections with those headings. The overall article must be within HTML paragraphs. Perhaps start with a

lede paragraph, then headings. Thus we should structure:

... lede ...

Hintergrund

...

Reaktionen aus dem In- und Ausland

...

Ausblick

...

But they insisted "HTML:

." That seems confusing. Perhaps they want to start each article with a heading that is bold/italic inside an h2 inside a p? Actually maybe they want something like:

Artikel-Überschrift

But we already have HEADLINE_DE/EN separately. The story probably should begin directly with the lede, no extra heading needed. But they said "Aufbau: Lede-Absatz ->

Hintergruende

->

Reaktionen..." So the lede is a paragraph, then headings. Thus we can output:

... lede ...

Hintergrund

...

Reaktionen aus dem In- und Ausland

...

Ausblick

...

But they also want HTML tags

. Maybe they want the lede paragraph to start with

...?? That seems wrong. Given ambiguity, I think we can follow pattern: start with

... ??? Actually they wrote "HTML:

." Possibly they want to open the article with a paragraph that contains an h2 with strong and em tags. Could be like:

...

. That is nested heading inside paragraph which is not valid HTML. But we can approximate:

...

?? This is messy. Probably simplest: Provide the story in HTML with the required structure: start with

(maybe they want to open a heading that is bold+italic). Actually we can open with

and then put the headline? But they already gave separate HEADLINE. Maybe they expect the story to start with

and then the text, and later close tags appropriately. Let's just follow: start with "

" then lede content and then close tags appropriately: close

maybe later. But they didn't specify closing tags; they only gave the opening tags. Might be okay to just start with that and then write content, and end with proper closing tags at the end of story. Thus we could start story with:

Dynamische Tarife: Wenn Strompreise das neue Erzählungsmittel der Regierung werden

But they said the lede paragraph -> then

Hintergrund

. So maybe the lede should be a paragraph without heading; then the first heading is

Hintergrund

. So maybe we ignore the opening

part and just start with

... lede ...

. But they explicitly said "HTML:

." This suggests the article must start exactly with those tags. I think we have to begin with that exact string: "

". Then continue with the lede content, then later close tags? But they didn't ask for closing tags. Possibly they expect the article to end after the final section, not requiring closing tags. The important thing is to include those opening tags. Thus I'll start story with:

... lede ...

But that adds extra tags. Given ambiguity, I'll produce story as:

Dynamische Stromtarife: Die neue Tragödie des grünen Fortschritts

...

Hintergrund

...

Reaktionen aus dem In- und Ausland

...

Ausblick

...

But they wanted lede first, then headings. So lede wants no heading; but we are adding heading before lede? Hmm. I'll do: Start with

then lede text then close

then continue with headings. Thus:

Stromrechnungen könnten künftig stärker schwanken als die coalitional tension im Kabinett, warnt ein Insider...

Hintergrund

...

... That seems plausible. Now STORY_EN similarly. We must keep word count 400-600 words each. We also need IG_CAPTION_DE, IG_CAPTION_EN 110-180 chars, no hashtags, no URLs, no "link in bio". Provide curiosity, not reveal core twist.