
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Let \\(\triangle ABC\\) have internal angles \\(A\\), \\(B\\), and \\(C\\) opposite to sides \\(a\\), \\(b\\), and \\(c\\) respectively, satisfying \\((a+b+c)(a-b+c)=ac\\).  
\\((\\)Ⅰ\\()\\) Find \\(B\\).  
\\((\\)Ⅱ\\()\\) If \\(\sin A\sin C= \dfrac { \sqrt {3}-1}{4}\\), find \\(C\\).

Present the answer in LaTex format: \boxed{Your answer}
user