Seedance 2.0 Desktop Breaking Video Prompt

Use the provided Apple desktop image as the first frame, 16:9, 15 seconds, fixed camera, single take. Maintain consistency of the woman's facial features, black swordsman costume, hairstyle, and blue mist background; retain desktop icons, menu bar, and Dock.
0-4s: The woman in the desktop wallpaper suddenly moves, looking calm, continuously tossing and catching the same short knife upwards twice, blade spinning in air, natural movements, hair gently floating.
4-6s: On the third toss, she misses, the knife slips from her hand, tip flying towards the audience, hitting the screen glass. Accompanied by crisp glass breaking sound, spiderweb cracks instantly spread from impact point, covering foreground of character and desktop UI, screen shakes briefly once.
6-9s: Woman first stunned, then widens eyes, frowns, showing obvious panic after causing trouble. She looks at cracks, then at audience, frantically tries to cover cracks, realizes she can't.
9-14s: Suddenly thinks of a solution, reaches for top-right control center, opens screen brightness control with sun icon, hurriedly drags brightness slider left to lower it. Each operation darkens entire screen synchronously, character, background, icons, and cracks gradually fade into darkness; while operating, she guiltily looks at audience, finally lowering brightness to minimum.
14-15s: Screen completely pure black, hold for one second, no text or logos appear. Sound: Starts with lively martial arts instrumental and whooshing sound of spinning knife; music stops abruptly upon impact, emphasizing glass breaking sound; retains frantic fabric rustling and UI click sounds, ending quietly. Constraints: No cuts, no character changes, no background changes, no new characters or knives, no physical computer frame or keyboard appearance. Cracks always fixed on screen glass plane. Final blackout must be triggered by woman operating brightness control, cannot suddenly cut to black.

以提供的苹果桌面图片为首帧，16:9，15 秒，固定镜头，一镜到底。保持女子的五官、黑色侠客服装、发型及蓝色雾气背景一致，保留桌面图标、菜单栏与 Dock。 
0—4 秒：桌面壁纸中的女子突然动起来，神情淡定，用手中同一把短刀连续向上抛接两次，刀刃在空中旋转，动作自然，发丝轻轻飘动。 
4—6 秒：第三次抛接时失手，短刀脱手，刀尖朝观众方向飞来，撞上屏幕玻璃。伴随清脆的玻璃碎裂声，撞击点瞬间扩散出蛛网状裂纹，覆盖在人物和桌面 UI 前方，画面短促震动一次。 
6—9 秒：女子先愣住，随即睁大眼睛、皱眉，露出明显着急、闯祸后的慌张表情。她看看裂纹，又看向观众，手忙脚乱地试图遮住裂纹，发现遮不住。 
9—14 秒：她突然想到办法，伸手点击右上角的控制中心，打开带太阳图标的屏幕亮度控件，急促地将亮度滑块向左调低。每次操作都让整个屏幕同步变暗，人物、背景、图标和裂纹一起逐渐隐入黑暗；她一边操作，一边心虚地看向观众，最后将亮度调至最低。
14—15 秒：画面完全纯黑，保持一秒，不出现任何文字或标志。 声音：开头是轻快的武侠器乐和飞刀旋转的破风声；撞击时音乐骤停，突出玻璃碎裂声；随后保留慌乱的衣料摩擦声和 UI 点击声，最终安静收尾。 约束：不切镜头、不变换人物、不更换背景、不新增人物或飞刀、不出现实体电脑外框或键盘。裂纹始终固定在屏幕玻璃平面上。最后变黑必须由女子操作亮度控件触发，不能突然切黑