После совещания мне нужно не столько кофе, сколько спокойствие.

It means not so much ..., as ... or not X so much as Y.

So:

• не столько кофе, сколько спокойствие
  = not so much coffee as calm / peace / tranquility

The idea is comparison of importance, not quantity in a literal counting sense. The speaker is saying:

• coffee is not the main thing needed
• calmness is the more important thing

This structure is very common in Russian.

More examples:

• Мне нужен не столько отдых, сколько сон.
  = I need not so much rest as sleep.

• Это не столько проблема, сколько особенность.
  = It’s not so much a problem as a feature/characteristic.

Yes, by itself столько often means so much / this much / that much. But in the fixed pattern не столько ..., сколько ..., it becomes part of a comparison.

So you should learn this whole chunk as one structure:

• не столько X, сколько Y

It does not literally mean not this much X, how much Y in normal translation. Idiomatically, it means:

• not so much X as Y
• less X than Y
• not really X, but rather Y

After the preposition после (after), Russian uses the genitive case.

• dictionary form: совещание = meeting
• after после: после совещания = after the meeting

So:

• после урока = after the lesson
• после работы = after work
• после совещания = after the meeting

This is a standard rule:

• после + genitive

Совещание usually means a meeting, especially a more formal or work-related one, often for discussion or coordination.

It can suggest things like:

• a staff meeting
• a planning meeting
• an internal work meeting

It is often more formal than a casual meeting in English.

Russian often expresses need with an impersonal structure:

• мне нужно ...

Literally, this is closer to:

• to me, it is necessary ...

So мне is in the dative case, not nominative.

Compare:

• Я хочу кофе. = I want coffee.
• Мне нужен кофе. = I need coffee.
• Мне нужно спокойствие. = I need calm / tranquility.

This is a very common Russian pattern:

• мне нужно
• тебе нужно
• ему нужно
• нам нужно

Because нужно here is being used impersonally, like it is necessary / needed.

In this use, нужно does not agree with мне. The мне part is just the person affected: for me / to me.

So:

• мне нужно = I need
• ему нужно = he needs
• нам нужно = we need

You can think of it as a fixed predicative form.

Russian also has a related pattern with нужен / нужна / нужно / нужны, where agreement is clearer:

• мне нужен кофе
• мне нужна помощь
• мне нужно спокойствие
• мне нужны деньги

In your sentence, нужно works naturally with the whole contrastive phrase.

Because Russian uses different structures from English for ideas like I need...

English says:

• I need coffee.

Russian often says:

• Мне нужно кофе.
• Мне нужен кофе.

So Russian does not need a separate verb like English need in every case. The meaning is carried by:

• мне = to me / for me
• нужно = necessary / needed

This is just how Russian commonly expresses necessity.

Кофе is a special noun because it is generally indeclinable in modern Russian. That means its form usually stays the same.

So you often see:

• кофе
• без кофе
• к кофе
• о кофе

The form does not visibly change.

Also, кофе is traditionally treated as masculine, even though it ends in -е:

• горячий кофе
• вкусный кофе

In everyday speech, some variation exists, but learners should normally treat кофе as masculine.

Because the sentence needs a noun, not an adjective.

• спокойствие = calmness, tranquility, peace of mind

The speaker is naming the thing they need. An adjective like спокойный means calm and describes a noun, but it cannot usually stand here by itself with the same meaning.

So:

• мне нужно спокойствие = I need calmness / peace
• not мне нужно спокойный

If you wanted an adjective, you would need a noun with it:

• мне нужен спокойный вечер = I need a calm evening

All of those can work depending on context.

Спокойствие usually means a state of calmness, inner peace, or quiet emotional stability. In this sentence, natural English translations could be:

• After the meeting, I need not so much coffee as calm.
• After the meeting, I need not so much coffee as peace and quiet.
• After the meeting, I need calm more than coffee.
• After the meeting, what I need is not so much coffee as some peace and quiet.

If the original meaning has already been shown, the key thing for the learner is that спокойствие is an abstract noun meaning a calm state.

Yes. A very literal translation is:

• After the meeting, I need not so much coffee as calm/tranquility.

But more natural English versions might be:

• After the meeting, I need calm more than coffee.
• After the meeting, what I really need is calm, not coffee.
• After the meeting, I need peace and quiet more than I need coffee.

The Russian structure is elegant and common, but English often sounds more natural if you rephrase it.

Yes, Russian word order is flexible, but this order is natural and clear:

• После совещания — sets the time/background first
• мне нужно — introduces the main idea: I need
• не столько кофе, сколько спокойствие — gives the contrast

So the sentence flows like:

1. after the meeting
2. for me / I need
3. not so much coffee as calm

You could change the order for emphasis, but this version is very normal.

For example:

• Мне после совещания нужно не столько кофе, сколько спокойствие.

This is also possible, with slightly different emphasis.

Not really. Even though столько originally relates to amount, in this structure the main idea is relative importance, not literal measurable quantity.

So the sentence does not mainly mean:

• I need less coffee and more calm in some countable sense

It means more like:

• coffee is not the real solution
• calmness is what matters more

Sometimes Russian uses both patterns, but they are not always interchangeable in exactly the same way.

You may hear:

• Мне нужен кофе.
• Мне нужно спокойствие.

With a contrastive structure like this, мне нужно не столько кофе, сколько спокойствие sounds very natural.

If you tried to build everything around нужен, agreement questions become more awkward because you are contrasting two nouns of different grammatical types:

• кофе traditionally masculine
• спокойствие neuter

So нужно works especially well here as a neutral impersonal form.

It is perfectly normal Russian, but a little thoughtful or polished in style because of the не столько ..., сколько ... construction.

It does not sound strange or overly poetic. It simply sounds more deliberate than a very plain sentence like:

• После совещания мне нужно спокойствие, а не кофе.
  = After the meeting, I need calm, not coffee.

Both are correct, but your original sentence sounds slightly more nuanced and elegant.

Yes.

• После совещания мне нужно не кофе, а спокойствие.

This means:

• After the meeting, I need not coffee but calm.

That version is simpler and more direct.

The difference is:

• не кофе, а спокойствие = straightforward correction/replacement
• не столько кофе, сколько спокойствие = more nuanced comparison, not so much coffee as calm

So the original sentence suggests coffee might help a little, but calm is what is really needed.

A good summary would be:

1. после + genitive

   • после совещания

2. мне нужно = impersonal way to say I need

   • literally something like to me, it is necessary

3. не столько X, сколько Y = not so much X as Y

   • contrast of importance or emphasis

4. кофе is usually indeclinable and traditionally masculine

5. спокойствие is an abstract noun meaning calmness / peace / tranquility

If you understand those five points, you understand the sentence very well.