四枚刻有 π、Σ、∫ 和 ∞ 的圓章，呈現石材、金屬、霓虹與沙漠構成的微型世界， 製作

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由 4 個宏偉的數學符號組成的 2x2 網格，將其製作成圓形徽章內的 3D 微型世界浮雕 [左上：Pi (π) 呈現為金屬硬幣內以石材雕刻的浮雕城市，有微小階梯與柱廊，硬幣邊緣刻有方程式] [右上：Sigma (Σ) 呈現為帶有齒輪與蒸汽通風口的機械浮雕，覆有銅綠的青銅，銳利的邊緣輪廓光] [左下：Integral (∫) 呈現為鋼製徽章內霓虹燈映照、雨水浸濕的微型巷弄世界，有反光的水窪與微小剪影] [右下：Infinity (∞) 呈現為溫暖色調木製硬幣內沙塵暴中的沙漠浮雕，有旋捲的沙紋與微型探測車] 收藏品微距產品攝影，清晰的邊緣高光，逼真的金屬／木紋質感，淺景深，高對比，瑞士風格 2x2 網格版面。

2x2 grid of 4 monumental mathematical symbols built as 3d micro-world reliefs inside circular medallions [Top Left: The Pi (π) as a carved stone relief city inside a metal coin, tiny staircases and colonnades, equations engraved around the rim] [Top Right: The Sigma (Σ) as a mechanical relief with gears and steam vents, patinated bronze, sharp rim lighting] [Bottom Left: The Integral (∫) as a neon rain-soaked micro-alley world inside a steel medallion, reflective puddles, tiny silhouettes] [Bottom Right: The Infinity (∞) as a dust-storm desert relief inside a warm wooden coin, swirling sand texture, miniature rovers] Collector macro product photography, crisp rim highlights, realistic metal/wood grain, shallow DOF, high contrast, swiss 2x2 grid layout.