A conceptual digital illustration for an article cover about a cybersecurity engineer’s irreplaceable value in the age of AI code generation.

Visual metaphor: A digital fortress/castle silhouette in the center-left, with glowing blue code streams flowing around its base like a moat. On the left side of the moat, abstract AI-generated code patterns (geometric, machine-like, uniform). On the right/castle side, a human figure silhouette standing at the castle gate holding a shield — representing human judgment, intuition, and strategic oversight.

The castle/moat represent the idea of “护城河” (moat) — the competitive advantage security engineers retain.

Color palette: Deep navy blue and teal tones with strategic warm amber/gold accents for the human element. Clean, modern digital art style.

Title text in Chinese centered in the upper portion or left-aligned: “AI 能写代码了，安全工程师的护城河在哪”

NO realistic human faces. Use simplified silhouettes. Leave 40-50% breathing room. The composition should feel contemplative and confident, not defensive or anxious.