Epic fantasy book cover illustration. A vast open sky at dusk, dramatic and expansive. In the center, the dark silhouette of a massive dragon flying forward, wings fully outstretched. On its back rides a single rider a young woman with long blond hair streaming behind her in the wind, wearing fitted fantasy armor. The rider and dragon are rendered mostly as silhouettes, with only subtle rim light outlining their forms. From the tail of the dragon backward, both dragon and rider begin to disintegrate into ash. The solid silhouette fractures into drifting embers, gray ash, and fine particulate dust, carried away by the wind. The transformation is gradual and poetic, not violent a visual metaphor of loss, erosion, and inevitability. The ash trails behind them, dissolving into the sky. The scene is quiet and monumental, emphasizing motion forward while the past disintegrates. No visible ground, no cities, no enemies only sky, light, and ash. The mood is somber, tragic, and awe-inspiring. Painterly realism, cinematic lighting, restrained color palette, designed as a professional fantasy novel cover. --ar 2:3

史诗奇幻书籍封面插图。一片辽阔的黄昏天空，戏剧性又宽广。在中心，暗黑的巨大龙的剪影向前飞去，翅膀完全展开。在它的背上骑着一位年轻女性，长长的金发在风中飞扬，穿着紧身的奇幻盔甲。骑士和龙主要呈现为剪影，只有微弱的轮廓光勾勒出他们的形状。从龙的尾部向后，龙和骑士开始化为灰烬。坚固的剪影化为飘动的星星，灰色的灰烬和细小的尘埃，被风吹走。转变是渐进而富有诗意的，没有暴力，是失落、侵蚀和必然性的视觉隐喻。灰烬在他们身后拖曳，融入天空。这个场景宁静而庄严，强调向前的运动，而过去正在消逝。没有可见的地面，没有城市，没有敌人，只有天空、光和灰烬。气氛阴郁、悲剧且令人敬畏。绘画般的现实主义，电影般的灯光，克制的色彩调色板，设计为专业的奇幻小说封面。