Spotlight Mystery Girl Portrait

Generate a hyper-realistic style female character anime portrait
Standing against a pure black background. 
Lighting: Use a **narrow-beam spotlight** that focuses only on the center of the face. 
The edges of the light must be sharp and sharp, creating a dramatic effect. 
All areas outside the spotlight should quickly fall into deep darkness. 
(Shadow fading is severe), almost blending into the black background. 
Not soft light. 
Hair: Long black hair, with a few strands falling to either side of the cheeks. The ends should blend with the shading. 
Posture: Gently raise one hand to your lips, making a shy and hesitant pose. 
His gaze was mysterious, staring straight into the camera. 
Clothing: Black long-sleeve knit sweater; 
Most of the sweater and body should blend into the darkness, with fewer details, the better. 
Overall tone: gloomy, melancholic, dramatic, mysterious. 
Only the light-exposed part of the face has high contrast. 
Everything outside the spotlight should be almost invisible.