“密” is a Fire Smoke text effect 使用 FontVibe AI 创作的文字效果. 熊熊燃烧的火焰与烟雾特效，戏剧化的热浪和余烬光芒.

Real combustion physics: white-yellow inner core transitioning through orange and deep red to wispy blue-grey outer tips. Turbulent flame tongues surge upward with natural random motion. Dense dark smoke billows in heavy rolling columns, curling upward — charcoal and near-black with faint translucency at edges. Firelight self-illuminates from below with warm amber-orange cast. Dramatic upward rim from intense heat source underneath. Background: deep charcoal haze with faint ember glow — not pure black. Cinematic fire photography quality. LETTERFORM PRIORITY: when the chosen font carries its own treatment, that font's letterform shapes take priority and own the letters; this style governs the flame-and-smoke material, the combustion glow and the cast light. FALLBACK MATERIAL: if the font carries no material of its own, render the letters ablaze — a white-yellow core through orange to deep red flame tongues with dark rolling smoke and warm self-illumination from below. COLOR PRIORITY: keep the font's own colors if specified; otherwise the natural fire spectrum of amber, orange and deep red. A single rendered character, “密”, dominates a deep charcoal haze filled with layered near-black smoke. Its surfaces are consumed by physically accurate combustion: a white-yellow incandescent inner core bleeding through orange and deep red flame fronts, with irregular flame tongues tearing upward from every exposed edge. Dense rolling smoke forms in heavy charcoal columns, curling and thinning into translucent blue-grey wisps near the upper atmosphere. Fine ember particles lift through the frame at varied depths, some sharply luminous, others softened by heat haze. The surrounding air warps with visible refraction ripples above the burning character, while faint soot and ash drift across the dark field. Intense amber-orange self-illumination rises from beneath, casting a hard upward rim along the character’s contours and revealing scorched, cracked carbon texture beneath the flame layer. Behind it, a dim volcanic glow diffuses through smoky blackness rather than a flat black void. Cinematic fire photography, high contrast, ray-traced flame translucency, volumetric smoke, natural turbulent motion, incandescent sparks, deep shadow separation.