===== C1 Vocabulary Focus =====
**What it is:** High-level vocabulary for nuance, argument, and professional writing.  
**What it’s for:** Avoid repeating simple words and express precise meaning.  
**Example:** “This approach is viable; however, it may be counterproductive in the long run.”

===== Focus areas =====
  * Nuance pairs: effective vs efficient; risk vs issue
  * Academic/professional verbs: facilitate, mitigate, allocate, justify
  * Advanced collocations: draw a distinction, pose a challenge, reach a consensus
  * Tone control: neutral vs formal vs persuasive

===== Practice =====
  * Learn by “sentence mining”: take phrases from real articles.
  * Weekly: write 1 paragraph using 8–10 target phrases.

===== Hard words (Glossary) =====
  * *nuance* /njuːˈɑːns/: sắc thái nghĩa
  * *viable* /ˈvaɪəbəl/: khả thi
  * *counterproductive* /ˌkaʊntəprəˈdʌktɪv/: phản tác dụng
  * *consensus* /kənˈsensəs/: đồng thuận
  * *mitigate* /ˈmɪtɪɡeɪt/: giảm nhẹ (tác động xấu)