
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
Given the parabola C: x² = 2py (p > 0), draw a line l: y = 6x + 8, which intersects the parabola C at points A and B. Point O is the origin, and $\overrightarrow{OA} \cdot \overrightarrow{OB} = 0$. A moving circle P has its center on the parabola C and passes through a fixed point D(0, 4). If the moving circle P intersects the x-axis at points E and F, and |DE| < |DF|, find the minimum value of $\frac{|DE|}{|DF|}$.

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