超写实3D渲染风格，1:1方形画幅，中心对称构图，正平视机位，中景展示一柄竖直立放的奇幻长剑，剑柄顶端为磨损银灰色菱形金属配重，握柄表面由深棕色皮革绳多层螺旋缠绕包裹，护手为平直十字造型、带有使用痕迹的银灰色做旧金属，剑身为锻纹做旧银钢材质，剑脊正中纵向透出连续明亮的淡蓝色冷光，剑身由宽向窄收窄，剑尖尖锐竖直向下接触深灰色哑光平面，背景为均匀深灰色哑光渐变，顶部光源偏暗、底部地面柔和打光，在剑身底部投下浅淡阴影，突出金属划痕磨损质感与蓝光的通透效果，整体色调偏冷暗，氛围厚重写实。

Ultra-realistic 3D render style, 1:1 square aspect ratio, center-symmetric composition, eye-level front camera angle, medium shot displaying a vertically standing fantasy longsword. The pommel at the top is a worn, aged silver-gray diamond-shaped metal weight; the grip is wrapped in multiple spiral layers of dark brown leather cord; the crossguard is a straight cross-shaped worn silver-gray aged metal; the blade is made of forged, weathered silver steel with a continuous bright pale blue cold glow running vertically along the central ridge of the blade. The blade tapers from wide to narrow, with its sharp tip pointing straight down to touch a dark gray matte surface. The background is a uniform dark gray matte gradient, with softer lighting on the ground below the top light source, casting a faint shadow at the bottom of the blade, highlighting the texture of scuffs and wear on the metal and the translucent effect of the blue glow. The overall tone is cool and dark, with a heavy, realistic atmosphere.