Sci-Fi Interstellar Courier Transformation Scene for Seedance 2.0

**Visual Tone**: Sci-fi cinematic feel, realism, film grain texture
> Close-up, continuously tracking downward on the forearm. The cuff of a man's [@Image 1] worn leather jacket suddenly splits open, and a hidden metal mechanical plate underneath violently springs outward and unfolds. Heavy titanium alloy pistons extend, interlocking with precise gear sets with a crisp "clack" sound. Thick, industrial-style metal armor segments quickly cover and spread up the arm to the shoulder and chest. The entire process is filled with a sense of heavy machinery and industrial power. Side cold cyan ambient light, sharp contour hard light. The camera tracks smoothly upward from the forearm along a linear rail. Sound effects: Hissing of piston exhaust, continuous crisp metal "clack-clack" of gears meshing, heavy "thud" of armor plates locking. 
> Close-up transitions to medium shot, the camera continues moving downward (same long take). In the armored palm, precise metal mechanical parts fold and unfold layer by layer, reassembling and transforming into a heavy, industrial-style sword hilt. The top of the hilt suddenly ignites, and a core of scorching blue light illuminates. Subsequently, translucent holographic laser crystals rapidly extend forward from the core in segmented forms—each segment briefly hovers in the air before quickly locking together—finally combining with a "hum" into a complete, extremely slender holographic laser katana. The blade emits a deep blue glow and faint digital particles. 45-degree top hard light, deep shadows. The camera slowly pulls back to show the entire sword. The character transforms into the final heavy mech form [@Image 2]. 
Sound effects: Friction and reassembly sounds of metal parts, crackling of electric arcs as the laser ignites, followed by a deep, powerful low-frequency "hum."

**视觉基调**：科幻电影感，写实感，胶片颗粒感
> 特写，持续跟踪向下拍摄前臂。一名男性【@图片1】
的破旧皮夹克袖口突然裂开，下方隐藏的金属机械板猛然向外弹射展开。沉重的钛合金活塞伸出，与精密的齿轮组发出清脆的"咔哒"声后相互咬合锁定。厚重的工业风金属装甲片段沿着手臂迅速向上覆盖蔓延至肩膀和胸口。整个过程充满沉重的机械感和工业力量感。侧面冷青色环境光，边缘锐利的轮廓硬光。镜头以平稳的线性轨道从前臂向上滑移跟踪。音效：活塞排气的嘶嘶声，齿轮咬合的清脆金属"咔哒咔哒"连续声，装甲板锁定的沉重"砰"声。
> 特写转中景，镜头持续向下移动（同一长镜头）。装甲手掌中，精密的金属机械零件层层翻折展开，重新拼合变形为一个充满工业感的重型剑柄。剑柄顶端突然点燃，一道炽热的蓝色光芒核心亮起。随后，半透明的全息激光晶体以分段的形式从核心向前极速延伸——每一段在空中短暂悬停后迅速拼合锁定——最终"嗡"地一声组合成一把完整的、极其修长的全息激光武士刀。刀刃散发出深蓝色的辉光和微弱的数字化颗粒。45度顶光硬光，深重阴影。镜头缓慢后拉展示全刀。人物变身重装机甲最终形态【图片2】
音效：金属零件摩擦重组声，激光点燃的电弧噼啪声，最后是深沉有力的低频"嗡"鸣。