diff --git a/docs/prd/AI_NATIVE_MATCH3D_CREATOR_AND_GAMEPLAY_SYSTEM_PRD_2026-04-30.md b/docs/prd/AI_NATIVE_MATCH3D_CREATOR_AND_GAMEPLAY_SYSTEM_PRD_2026-04-30.md
index ad4b7664..2d321ea4 100644
--- a/docs/prd/AI_NATIVE_MATCH3D_CREATOR_AND_GAMEPLAY_SYSTEM_PRD_2026-04-30.md
+++ b/docs/prd/AI_NATIVE_MATCH3D_CREATOR_AND_GAMEPLAY_SYSTEM_PRD_2026-04-30.md
@@ -151,9 +151,9 @@ Agent 的职责是帮助用户确认可以直接编译 demo 的最小配置：
 
 题材决定后续生成或选择物品素材的方向。用户可以自定义主题，例如水果、玩具、食物、符号等。
 
-首版 demo 不接入真实图片生成。运行态可消除物统一使用纯色几何体表现，不使用透明气泡，也不在图案上放文字标识。题材仍决定后端生成的 `visualKey` 和尺寸比例，但前端首版用差异化颜色与几何造型表现可消除物，例如圆形、三角形、菱形、五角星、梯形、平行四边形等，避免玩家在堆叠状态下难以辨认。
+首版 demo 不接入真实图片生成。当前运行态可消除物统一使用参考图方向的 25 个积木件类型表现，不使用透明气泡，也不在图案上放文字标识。前端首版用差异化颜色、积木造型和 3D 程序化模型表现可消除物，避免玩家在堆叠状态下难以辨认。
 
-水果图形资产需要具备常识可感知的相对大小关系，但不要求真实比例绝对精准。首版固定规则为：西瓜明显大于苹果；苹果、橙子、梨、桃子为中等尺寸；葡萄、李子、青柠等小型水果略小。该尺寸由后端运行态物品 `radius` 下发，前端只按快照表现。
+可消除物尺寸使用五档相对体积规则：XL 型相对体积为 `1.60~2.30`，L 型为 `1.25~1.60`，M 型为 `1.00`，XS 型为 `0.65~0.85`，S 型为 `0.35~0.50`。单局中 XL / L / M / XS / S 按本局使用的消除物类型数的 `20% / 30% / 30% / 15% / 5%` 分配；非整数配额按最大余数补齐，确保总数等于本局使用类型数量。同一关卡内同一个颜色和造型的物品只能对应一个尺寸档位；可存在同尺寸但不同颜色和造型的物品。后端运行态通过 `radius` 下发权威尺寸，前端只按快照表现。
 
 ### 需要消除次数
 
@@ -265,6 +265,16 @@ totalItemCount = clearCount * 3
 
 每种物品数量必须是 `3` 的倍数，避免生成无法通关的局。
 
+生成的消除物类型数由用户填写的需要消除次数决定：
+
+```text
+itemTypeCount = clearCount <= 25 ? clearCount : 25
+```
+
+当 `clearCount <= 25` 时，本局生成的 `itemTypeId` 数量等于 `clearCount`，每种类型默认生成 `3` 件；当 `clearCount > 25` 时，本局最多生成 `25` 种 `itemTypeId`，后续消除组按这 `25` 种类型轮转补齐，且每种类型最终数量仍必须保持 `3` 的倍数。
+
+同一局内这些类型必须分别使用不同的形状和颜色组合，不能出现两个组看起来像同一种物体的情况。
+
 ## 8.4 阶段陆续生成
 
 每局物品允许阶段陆续生成。
@@ -277,8 +287,8 @@ totalItemCount = clearCount * 3
 
 首版 demo 使用 2D 图案素材。
 
-1. demo 至少提供 `10` 种颜色与几何造型组合素材。
-2. 当题材为水果时，后端仍可切换到 `10` 种水果视觉键和尺寸比例，但前端首版必须把这些视觉键映射为无文字的纯色几何体，不能显示为水果图、透明气泡或文字标记。
+1. demo 至少提供 `25` 种彼此不同的颜色与几何造型组合素材，支撑 `clearCount > 25` 时的类型上限。
+2. 当前 demo 使用 25 个积木件视觉键作为默认素材池；前端首版必须把这些视觉键映射为无文字的纯色 2D 图标和程序化 3D 积木模型，不能显示为透明气泡或文字标记。
 3. 后续可以尝试替换为伪 3D 或 3D 模型。
 4. 用户题材主题后续会映射为符合常识预期的物品集合。
 
@@ -310,6 +320,8 @@ totalItemCount = clearCount * 3
 
 飞行动画过程中，物品不再与其他物品产生碰撞。
 
+当前 3D 实验模式下，物品进入备选栏后必须从圆形空间的物理世界移除；备选栏只展示该物品同款 3D 模型的独立预览，固定为斜 `45` 度便于识别，不再参与场内碰撞、重力或堆叠。
+
 前端播放即时反馈的同时，必须向后端提交点击意图。后端确认后固化入槽结果；后端拒绝时，前端恢复物品位置和备选栏表现。
 
 ## 8.9 备选栏
@@ -318,8 +330,9 @@ totalItemCount = clearCount * 3
 
 1. 每次点击进入即时反馈流程后，前端先把物品表现为进入备选栏。
 2. 备选栏中每出现 `3` 个相同物品 id，前端立即播放自动消除效果并腾出格子。
-3. 后端确认后固化真实备选栏和消除结果；若后端返回状态不一致，前端必须以最新后端快照校正。
-4. 如果备选栏满且无法消除，前端可以立即展示失败过渡，最终失败状态以后端确认为准。
+3. 3D 模式下，备选栏格子展示从场内取出的同款 3D 模型预览，视角固定斜 `45` 度，不使用另一套不一致的 UI 图标；托盘预览必须共享一个 WebGL renderer，不能因多个预览上下文导致中心场地模型不可见；WebGL 回退或 `2D` 模式下才使用保留的 2D 图标。
+4. 后端确认后固化真实备选栏和消除结果；若后端返回状态不一致，前端必须以最新后端快照校正。
+5. 如果备选栏满且无法消除，前端可以立即展示失败过渡，最终失败状态以后端确认为准。
 
 ## 8.10 胜利
 
diff --git a/docs/technical/MATCH3D_CREATION_AND_RUNTIME_MINIMAL_IMPLEMENTATION_2026-04-30.md b/docs/technical/MATCH3D_CREATION_AND_RUNTIME_MINIMAL_IMPLEMENTATION_2026-04-30.md
index d8816907..d1c1d470 100644
--- a/docs/technical/MATCH3D_CREATION_AND_RUNTIME_MINIMAL_IMPLEMENTATION_2026-04-30.md
+++ b/docs/technical/MATCH3D_CREATION_AND_RUNTIME_MINIMAL_IMPLEMENTATION_2026-04-30.md
@@ -518,15 +518,25 @@ totalItemCount = clearCount * 3
 
 每种 `itemTypeId` 的数量必须是 `3` 的倍数。
 
+消除物类型数按创作输入的 `clearCount` 计算：
+
+```text
+itemTypeCount = clearCount <= 25 ? clearCount : 25
+```
+
+当 `clearCount <= 25` 时，运行态快照中的不同 `itemTypeId` 数量必须等于 `clearCount`；当 `clearCount > 25` 时，不同 `itemTypeId` 数量必须等于 `25`。超过 `25` 组的消除目标按这 `25` 种类型轮转生成，确保每种类型的最终数量仍是 `3` 的倍数。
+
+这 `25` 组在同一局内还必须对应 25 套不同的形状和颜色签名，不能有两组视觉上撞型。
+
 ## 9.3 demo 视觉素材
 
-首版使用内置视觉键和前端内置几何图形资产，不接真实图片生成。
+首版使用 25 个内置积木件视觉键和前端内置几何图形资产，不接真实图片生成。
 
-1. 水果题材必须使用 `watermelon-green / apple-red / banana-yellow / grape-purple / melon-green / berry-blue / peach-pink / plum-indigo / lime-lime / orange-orange` 这组内置水果视觉键；前端首版将其映射为纯色几何体，不渲染水果写实图，也不能显示为带文字或透明气泡的小球。
-2. 非水果题材暂使用 `red_circle / yellow_triangle / purple_diamond / green_square / blue_star / orange_hexagon / cyan_capsule / pink_heart / lime_leaf / white_moon` 这组兜底颜色形状视觉键。
-3. `visualKey` 不允许在前端统一兜底为同一个素材；未知 key 至少要有稳定的颜色差异，避免多个不同 `itemTypeId` 被玩家误认为同一种物品。
-4. 运行态图案必须使用实心、高饱和、无文字的几何 SVG，至少覆盖圆形、三角形、菱形、方形、五角星、六边形、胶囊、心形、梯形、平行四边形等多种轮廓；外层命中按钮不得再显示半透明气泡底。
-5. 水果题材的相对尺寸由后端权威半径决定，首版要求西瓜明显大于苹果，苹果、橙子、桃子等中型水果大于葡萄、李子、青柠等小型水果；前端不得自行改写规则半径，只负责按快照表现。
+1. 当前 demo 使用 25 个积木件视觉键作为默认素材池；前端首版将其映射为无文字的 2D 图标和程序化 3D 积木模型，不渲染写实图，也不能显示为带文字或透明气泡的小球。
+2. `visualKey` 不允许在前端统一兜底为同一个素材；未知 key 至少要有稳定的颜色差异，避免多个不同 `itemTypeId` 被玩家误认为同一种物品。
+3. 运行态图案必须使用实心、高饱和、无文字的几何 SVG，并保持与 3D 模型同一批 `visualKey` 对应关系；外层命中按钮不得再显示半透明气泡底。
+4. 每局按使用类型数量分配五档相对体积：XL 型 `1.60~2.30` 占 `20%`，L 型 `1.25~1.60` 占 `30%`，M 型固定 `1.00` 占 `30%`，XS 型 `0.65~0.85` 占 `15%`，S 型 `0.35~0.50` 占 `5%`。非整数配额按最大余数补齐，总数必须等于本局使用类型数量。
+5. 同一局内同一个颜色和造型的 `visualKey` 只能对应一个尺寸档位和一个半径，不能出现同一物品类型三件副本大小不同，也不能出现同一视觉键在复用时被分配到两种大小。前端不得自行改写规则半径，只负责按快照表现。
 6. 后续接入真实题材图片素材前，必须另补资产生成方案。
 
 ## 9.4 难度
@@ -646,9 +656,10 @@ src/components/match3d-runtime/
 
 1. 圆形空间占据主要区域。
 2. 备选栏固定 `7` 格。
-3. 倒计时清晰但不遮挡物品。
-4. 物品点击区域稳定，不因动画造成布局跳动。
-5. 胜利/失败结算使用独立面板，不在当前面板下方展开。
+3. 3D 模式下，备选栏格子使用与圆形空间内一致的程序化 3D 模型预览，固定斜 `45` 度视角，且不接入场内物理碰撞；托盘预览必须共享一个 WebGL renderer，不能每格创建独立 renderer；仅 WebGL 回退或 `2D` 模式使用 2D 图标。
+4. 倒计时清晰但不遮挡物品。
+5. 物品点击区域稳定，不因动画造成布局跳动。
+6. 胜利/失败结算使用独立面板，不在当前面板下方展开。
 
 ## 11.5 本地 mock 口径
 
diff --git a/docs/technical/MATCH3D_RUNTIME_3D_GEOMETRY_EXPERIMENT_2026-05-02.md b/docs/technical/MATCH3D_RUNTIME_3D_GEOMETRY_EXPERIMENT_2026-05-02.md
index e9c49cfa..9f36e223 100644
--- a/docs/technical/MATCH3D_RUNTIME_3D_GEOMETRY_EXPERIMENT_2026-05-02.md
+++ b/docs/technical/MATCH3D_RUNTIME_3D_GEOMETRY_EXPERIMENT_2026-05-02.md
@@ -19,7 +19,7 @@
 1. 现有 `Match3DVisualIcon`、`Match3DToken` 和托盘 2D 图案渲染代码必须保留。
 2. 新增 3D 表现层只作为运行态棋盘的可选渲染分支。
 3. 当浏览器不支持 WebGL、3D 依赖加载失败或实验开关关闭时，运行态必须自动回到现有 2D 图案表现。
-4. 托盘继续使用当前 2D 图标，便于玩家识别已选物品，也便于实验失败时快速回滚。
+4. 3D 模式下，托盘直接复用场内同一套程序化 3D 模型，以固定斜 `45` 度识别视角展示已选物品；托盘内物品不进入物理世界，不参与碰撞。WebGL 不可用或实验回退时，托盘继续使用当前 2D 图标。
 
 ## 3. 工程落点
 
@@ -50,7 +50,7 @@ cannon-es
 
 3D 分支只读取后端快照中的物品坐标、层级、可点击状态和视觉键。物理碰撞、轻微堆叠和几何体姿态只作为前端表现层，不改变消除规则、备选栏规则、胜负判定或最终权威快照。
 
-`match3dVisualAssets.tsx` 保留 2D 纯色几何图案映射，运行态托盘继续使用该 2D 图标；`match3dRuntimePresentation.ts` 收口显示层坐标和状态兼容，避免异常旧坐标把 2D 或 3D 物体推到圆形边界外。
+`match3dVisualAssets.tsx` 保留 2D 纯色几何图案映射，运行态托盘在 3D 模式下通过 `Match3DTrayPreviewBoard` 使用单个共享 WebGL 预览层复用 `createMatch3DItemMesh` 生成同款 3D 模型，不能为每个托盘格单独创建 `WebGLRenderer`。WebGL 不可用或 2D 回退时继续使用该 2D 图标；`match3dRuntimePresentation.ts` 收口显示层坐标和状态兼容，避免异常旧坐标把 2D 或 3D 物体推到圆形边界外。
 
 ## 4. 验收口径
 
@@ -58,8 +58,10 @@ cannon-es
 2. 3D 几何体保持在圆形区域内，不被圆形边界裁切到不可点。
 3. 物体进入场景后有轻微物理碰撞和堆叠稳定过程。
 4. 点击 3D 物体后仍执行原有乐观入槽、后端确认、三消反馈和结算。
-5. 单元测试仍覆盖 2D 回退图案，确保回退路径没有被删除。
-6. 390px 移动端与桌面端均不能出现横向溢出，顶部状态、圆形棋盘和 7 格备选栏都要完整可见。
+5. 被取出的 3D 物体必须立即从棋盘物理世界移除；备选栏展示的是无碰撞、固定角度的独立预览模型，不允许继续受场内碰撞、重力或堆叠影响。
+6. 托盘 3D 预览必须共享一个 renderer，避免多个 WebGL 上下文导致中心棋盘上下文被浏览器回收；中心棋盘监听 `webglcontextlost`，丢失时自动回退 2D 表现，禁止出现模型不可见但仍可点击的状态。
+7. 单元测试仍覆盖 2D 回退图案，确保回退路径没有被删除。
+8. 390px 移动端与桌面端均不能出现横向溢出，顶部状态、圆形棋盘和 7 格备选栏都要完整可见。
 
 ## 5. 锅型容器优化
 
@@ -72,3 +74,88 @@ cannon-es
 3. 物理世界使用同一个锅内半径作为水平活动边界，所有可消除物体的初始位置和运行中位置都必须被约束在圆形锅内。
 4. 物体受到重力后只允许在锅内碰撞、滑动、翻滚和向上堆叠，不能因为碰撞或初始坐标散落到圆形区域外。
 5. 该优化仍只属于前端 3D 表现层，不改变后端运行态坐标、点击权威判定、备选栏、消除和胜负规则。
+
+## 6. 中心引力优化
+
+2026-05-02 追加中心引力，用来解决高消除次数下 3D 物体过于松散、贴边后被圆形场地裁切的问题。体验后发现默认向心力会让模型过度挤压成团，因此当前先关闭默认引力，只保留代码开关，后续如需再尝试可重新调参。
+
+编码口径：
+
+1. 中心引力默认系数为 `0`，默认不对物理 body 施加水平向心力。
+2. 引力只作用在 X/Z 平面，不改变垂直重力，物体仍会自然落到锅底或堆叠在其他物体上。
+3. 引力在越靠近锅边时越明显，避免大量物体碰撞后形成稀疏外环；靠近中心时力度收敛，避免所有物体被吸成单点。
+4. 锅内活动边界继续作为硬约束；高数量物体应被锅边挡住并向上堆叠，不允许散落到圆形场地外。
+5. `/match3d?clearCount=100` 可作为本地直达压力测试入口，用于验证 300 个物体时仍在锅内聚拢。
+
+## 7. 正交俯视与真实场地边界
+
+2026-05-02 针对高堆叠时 3D 物体被 DOM 圆形裁切的问题，明确中心圆形区域不是裁切蒙版，而是游戏实际游玩场地。
+
+编码口径：
+
+1. 3D 棋盘使用正交俯视相机，避免高处物体因为透视放大而投影到圆形场地外。
+2. 圆形场地的内圈圆环对应 3D 世界里的锅内空气墙，物体范围由物理约束控制，不再依赖 DOM `overflow-hidden` 裁切。
+3. 外层圆形 UI 只负责显示锅沿和场地外观，不能把物体裁成半截；如果物体看起来越界，优先修正相机、物理半径和空气墙。
+4. 高数量压力测试以 `/match3d?clearCount=100` 为基准，物体可以在场地内向上堆叠，但不能被圆形边缘压住或切掉。
+
+## 8. 类型数量与样式池历史口径
+
+2026-05-03 曾调整消除物类型生成规则，解决 3D 关卡中可消除物类型和样式过少的问题。该节为历史口径，后续实际实现以第 11 节 25 个积木件资源池为准。
+
+编码口径：
+
+1. 历史版本曾使用 20 类形状颜色组合。
+2. 当前版本已替换为 25 个积木件，旧 20 类上限不再作为编码依据。
+3. 3D 与 2D 回退仍共用视觉键映射，新增样式不能破坏 `?match3dRender=2d` 回退路径。
+
+## 9. 特殊形状 3D 可读性修正
+
+2026-05-03 针对 20 组关卡中看不到十字、圆环、盾形、闪电、月牙、箭头等新形状的问题，补充 3D 几何体渲染口径。
+
+编码口径：
+
+1. 数据层仍使用 `visualKey` 决定类型，不新增贴图素材或文本标识。
+2. 十字、心形、星形、圆环、盾形、闪电、月牙、箭头、V 形等特殊形状不能继续使用普通盒子、球体或锥体代理，必须生成俯视角可辨认的 3D 轮廓。
+3. 特殊形状使用 Three.js 程序化轮廓挤出生成，保持当前 3D 实验可快速回退，不影响现有 2D 图案分支。
+4. 特殊形状的物理碰撞可以继续使用近似碰撞体，但显示网格需要固定为俯视可读姿态，避免落地翻滚后又变成长方块或普通三角体。
+5. 当前特殊形状已被 25 个积木件资源池替换；不能为了让玩家开局肉眼看到全部类型而改动初始层级、物理堆叠、遮挡、边界或可点击规则。
+
+## 10. 15 组中档局面的类型唯一性修正
+
+2026-05-03 针对 `clearCount=15` 时可消除物类型不足 15 种的问题，补充中档局面的规则验收口径。
+
+编码口径：
+
+1. `clearCount=15` 时，运行态数据中必须生成 `15` 种不同 `itemTypeId`，且首个 `15` 个 `visualKey` 必须分别对应不同几何形状。
+2. 每种 `itemTypeId` 在 `clearCount=15` 时只对应 1 次消除目标，即恰好生成 `3` 件物体；同一种视觉模型在同局中不应出现超过 3 件。
+3. 不为了展示 15 种而修改初始层级、物理堆叠、遮挡、边界或可点击规则；被盖住、堆叠和局部不可见是正常玩法效果。
+4. 当前版本已改为第 11 节的 `itemTypeCount = clearCount <= 25 ? clearCount : 25` 规则。
+
+## 11. 25 个积木件资源池替换
+
+2026-05-03 根据新的参考图，把可消除物体替换为 25 个积木件类型，并调整本局类型抽取规则。
+
+编码口径：
+
+1. 默认 `visualKey` 资源池改为 25 个积木件，覆盖长条、短条、2x2、2x3、2x4、1x1、光板、斜坡、圆柱、透明圆环、拱门和锥形件等差异化模型。
+2. 前端 3D 表现继续使用 Three.js 程序化几何体生成，不引入外部贴图或 GLB；托盘和 2D 回退继续使用同一批 `visualKey` 的简化图标。
+3. `clearCount <= 25` 时，本局从 25 个类型中按确定性随机顺序抽取 `clearCount` 种类型，不允许同局刷新重复类型。
+4. `clearCount > 25` 时，本局最多使用 25 种类型，额外消除组在这 25 种中轮转复用；每种类型最终数量仍必须是 3 的倍数。
+5. 该随机抽取只决定本局使用哪些类型和使用顺序，不改变物理堆叠、遮挡、边界、可点击判定、备选栏和胜负规则。
+6. 前端本地试玩、创作后试玩和后端权威运行态必须使用同一套 `itemTypeCount = clearCount <= 25 ? clearCount : 25` 口径。
+
+## 12. 五档体积规则
+
+2026-05-03 追加可消除物模型大小规则，把每局可消除物按五档相对体积分配。
+
+编码口径：
+
+1. M 型作为标准体积 `1.00`。
+2. XL 型相对体积范围为 `1.60~2.30`，占本局可消除类型数的 `20%`。
+3. L 型相对体积范围为 `1.25~1.60`，占本局可消除类型数的 `30%`。
+4. M 型相对体积固定为 `1.00`，占本局可消除类型数的 `30%`。
+5. XS 型相对体积范围为 `0.65~0.85`，占本局可消除类型数的 `15%`。
+6. S 型相对体积范围为 `0.35~0.50`，占本局可消除类型数的 `5%`。
+7. 本局使用类型数仍按第 11 节计算，即 `clearCount <= 25 ? clearCount : 25`。比例遇到非整数时按最大余数补齐，确保五档数量之和等于本局使用类型数。
+8. 体积档位分配绑定到本局选中的 `visualKey`，同一局内同一个颜色和造型只能有一个尺寸档位和一个半径；当 `clearCount > 25` 轮转复用类型时，复用的同一 `visualKey` 继续沿用同一尺寸。
+9. 前端本地试玩、创作后试玩和后端权威运行态必须使用同一套五档体积分配口径。
diff --git a/server-rs/crates/module-match3d/src/application.rs b/server-rs/crates/module-match3d/src/application.rs
index 0cb34c10..80517a9f 100644
--- a/server-rs/crates/module-match3d/src/application.rs
+++ b/server-rs/crates/module-match3d/src/application.rs
@@ -2,15 +2,56 @@ use shared_kernel::{normalize_optional_string, normalize_required_string, normal
 
 use crate::commands::{default_tags_for_theme, validate_result_publish_fields};
 use crate::{
-    MATCH3D_BOARD_CENTER, MATCH3D_BOARD_RADIUS, MATCH3D_BOARD_SAFE_MARGIN,
-    MATCH3D_DEFAULT_DURATION_LIMIT_MS, MATCH3D_FRUIT_VISUAL_KEYS, MATCH3D_ITEMS_PER_CLEAR,
-    MATCH3D_MAX_DIFFICULTY, MATCH3D_MIN_DIFFICULTY, MATCH3D_SHAPE_VISUAL_KEYS,
-    MATCH3D_TRAY_SLOT_COUNT, Match3DClickConfirmation, Match3DClickInput, Match3DClickRejectReason,
-    Match3DCreatorConfig, Match3DFailureReason, Match3DFieldError, Match3DItemSnapshot,
-    Match3DItemState, Match3DPublicationStatus, Match3DResultDraft, Match3DRunSnapshot,
-    Match3DRunStatus, Match3DTraySlot, Match3DWorkProfile,
+    MATCH3D_BLOCK_VISUAL_KEYS, MATCH3D_BOARD_CENTER, MATCH3D_BOARD_RADIUS,
+    MATCH3D_BOARD_SAFE_MARGIN, MATCH3D_DEFAULT_DURATION_LIMIT_MS, MATCH3D_ITEMS_PER_CLEAR,
+    MATCH3D_MAX_DIFFICULTY, MATCH3D_MAX_ITEM_TYPE_COUNT, MATCH3D_MIN_DIFFICULTY,
+    MATCH3D_TRAY_SLOT_COUNT, Match3DClickConfirmation, Match3DClickInput,
+    Match3DClickRejectReason, Match3DCreatorConfig, Match3DFailureReason, Match3DFieldError,
+    Match3DItemSnapshot, Match3DItemState, Match3DPublicationStatus, Match3DResultDraft,
+    Match3DRunSnapshot, Match3DRunStatus, Match3DTraySlot, Match3DWorkProfile,
 };
 
+#[derive(Clone, Copy)]
+struct Match3DSizeTierRule {
+    ratio: f32,
+    radius_scale: f32,
+    relative_volume: f32,
+    tier: &'static str,
+}
+
+const MATCH3D_SIZE_TIER_RULES: [Match3DSizeTierRule; 5] = [
+    Match3DSizeTierRule {
+        tier: "XL",
+        ratio: 0.20,
+        relative_volume: 1.86,
+        radius_scale: 1.23,
+    },
+    Match3DSizeTierRule {
+        tier: "L",
+        ratio: 0.30,
+        relative_volume: 1.40,
+        radius_scale: 1.12,
+    },
+    Match3DSizeTierRule {
+        tier: "M",
+        ratio: 0.30,
+        relative_volume: 1.00,
+        radius_scale: 1.00,
+    },
+    Match3DSizeTierRule {
+        tier: "XS",
+        ratio: 0.15,
+        relative_volume: 0.73,
+        radius_scale: 0.90,
+    },
+    Match3DSizeTierRule {
+        tier: "S",
+        ratio: 0.05,
+        relative_volume: 0.44,
+        radius_scale: 0.76,
+    },
+];
+
 pub fn compile_result_draft(config: &Match3DCreatorConfig) -> Match3DResultDraft {
     let game_name = format!("{}抓大鹅", config.theme_text);
     let summary = format!(
@@ -268,17 +309,18 @@ fn build_initial_items(
 ) -> Vec<Match3DItemSnapshot> {
     let mut rng = DeterministicRng::new(seed ^ ((clear_count as u64) << 32) ^ difficulty as u64);
     let base_radius = resolve_item_radius(difficulty);
-    let visual_keys = visual_keys_for_theme(theme_text);
+    let selected_visual_keys = select_visual_keys(&mut rng, theme_text, clear_count);
+    let item_type_count = resolve_item_type_count(clear_count);
+    let size_tier_plan = resolve_size_tier_plan(item_type_count);
     let mut items = Vec::with_capacity((clear_count * MATCH3D_ITEMS_PER_CLEAR) as usize);
 
     for clear_index in 0..clear_count {
-        let visual_index = (clear_index as usize) % visual_keys.len();
+        let visual_index = (clear_index as usize) % item_type_count;
         let item_type_id = format!("match3d-type-{:02}", visual_index + 1);
-        let visual_key = visual_keys[visual_index].to_string();
+        let visual_key = selected_visual_keys[visual_index].to_string();
+        let radius = resolve_item_radius_variant(base_radius, size_tier_plan[visual_index]);
 
         for copy_index in 0..MATCH3D_ITEMS_PER_CLEAR {
-            let radius =
-                resolve_item_radius_variant(base_radius, &visual_key, visual_index, copy_index);
             let (x, y) = random_point_in_circle(&mut rng, max_spawn_offset(radius));
             let instance_index = clear_index * MATCH3D_ITEMS_PER_CLEAR + copy_index;
             items.push(Match3DItemSnapshot {
@@ -308,22 +350,57 @@ fn build_initial_items(
     items
 }
 
-fn visual_keys_for_theme(theme_text: &str) -> &'static [&'static str; 10] {
-    if is_fruit_theme(theme_text) {
-        &MATCH3D_FRUIT_VISUAL_KEYS
-    } else {
-        &MATCH3D_SHAPE_VISUAL_KEYS
+fn resolve_size_tier_plan(item_type_count: usize) -> Vec<Match3DSizeTierRule> {
+    let mut plans = MATCH3D_SIZE_TIER_RULES
+        .iter()
+        .map(|rule| {
+            let exact_count = item_type_count as f32 * rule.ratio;
+            (exact_count.floor() as usize, exact_count.fract(), *rule)
+        })
+        .collect::<Vec<_>>();
+    let mut assigned_count = plans
+        .iter()
+        .map(|(count, _, _)| *count)
+        .sum::<usize>();
+    let mut remainder_order = (0..plans.len()).collect::<Vec<_>>();
+    remainder_order.sort_by(|left, right| {
+        plans[*right]
+            .1
+            .partial_cmp(&plans[*left].1)
+            .unwrap_or(std::cmp::Ordering::Equal)
+    });
+    let mut cursor = 0;
+    while assigned_count < item_type_count {
+        let plan_index = remainder_order[cursor % remainder_order.len()];
+        plans[plan_index].0 += 1;
+        assigned_count += 1;
+        cursor += 1;
     }
+
+    plans
+        .into_iter()
+        .flat_map(|(count, _, rule)| std::iter::repeat(rule).take(count))
+        .collect()
 }
 
-fn is_fruit_theme(theme_text: &str) -> bool {
-    let normalized = theme_text.trim().to_lowercase();
-    [
-        "水果", "果蔬", "果物", "fruit", "fruits", "苹果", "香蕉", "葡萄", "西瓜", "草莓", "桃",
-        "李", "柠", "橙", "梨",
-    ]
-    .iter()
-    .any(|marker| normalized.contains(marker))
+fn resolve_item_type_count(clear_count: u32) -> usize {
+    clear_count.clamp(1, MATCH3D_MAX_ITEM_TYPE_COUNT) as usize
+}
+
+fn select_visual_keys(
+    rng: &mut DeterministicRng,
+    _theme_text: &str,
+    clear_count: u32,
+) -> Vec<&'static str> {
+    let item_type_count = resolve_item_type_count(clear_count);
+    let mut visual_keys = MATCH3D_BLOCK_VISUAL_KEYS.to_vec();
+    // 中文注释：只打乱类型池顺序，不改变每个类型三件一组的可通关结构。
+    for index in (1..visual_keys.len()).rev() {
+        let swap_index = (rng.next_u32() as usize) % (index + 1);
+        visual_keys.swap(index, swap_index);
+    }
+    visual_keys.truncate(item_type_count);
+    visual_keys
 }
 
 fn resolve_item_radius(difficulty: u32) -> f32 {
@@ -332,48 +409,10 @@ fn resolve_item_radius(difficulty: u32) -> f32 {
     radius.max(0.052)
 }
 
-fn resolve_item_radius_variant(
-    base_radius: f32,
-    visual_key: &str,
-    visual_index: usize,
-    copy_index: u32,
-) -> f32 {
-    let copy_delta = (copy_index as f32 - 1.0) * 0.002;
-    if is_fruit_visual_key(visual_key) {
-        return (base_radius * fruit_visual_size_scale(visual_key) + copy_delta).clamp(0.04, 0.13);
-    }
-
-    let type_delta = ((visual_index % 5) as f32 - 2.0) * 0.004;
-    (base_radius + type_delta + copy_delta).clamp(0.045, 0.12)
-}
-
-fn is_fruit_visual_key(visual_key: &str) -> bool {
-    matches!(
-        visual_key,
-        "watermelon-green"
-            | "apple-red"
-            | "banana-yellow"
-            | "grape-purple"
-            | "melon-green"
-            | "berry-blue"
-            | "peach-pink"
-            | "plum-indigo"
-            | "lime-lime"
-            | "orange-orange"
-            | "pear-cyan"
-    )
-}
-
-fn fruit_visual_size_scale(visual_key: &str) -> f32 {
-    match visual_key {
-        "watermelon-green" => 1.24,
-        "melon-green" => 1.12,
-        "banana-yellow" => 1.04,
-        "apple-red" | "orange-orange" | "peach-pink" | "pear-cyan" => 1.0,
-        "plum-indigo" | "lime-lime" => 0.86,
-        "grape-purple" | "berry-blue" => 0.78,
-        _ => 1.0,
-    }
+fn resolve_item_radius_variant(base_radius: f32, size_tier: Match3DSizeTierRule) -> f32 {
+    debug_assert!(!size_tier.tier.is_empty());
+    debug_assert!(size_tier.relative_volume > 0.0);
+    (base_radius * size_tier.radius_scale).clamp(0.045, 0.13)
 }
 
 fn max_spawn_offset(radius: f32) -> f32 {
@@ -623,6 +662,79 @@ mod tests {
         assert!(counts.values().all(|count| count % 3 == 0));
     }
 
+    #[test]
+    fn item_type_count_follows_clear_count_until_twenty_five() {
+        let run = start_run_with_seed_at(
+            "run-types-small".to_string(),
+            "user-1".to_string(),
+            "profile-1".to_string(),
+            &test_config(12),
+            42,
+            1_000,
+        )
+        .expect("run should start");
+
+        let mut counts = BTreeMap::<String, u32>::new();
+        for item in &run.items {
+            *counts.entry(item.item_type_id.clone()).or_default() += 1;
+        }
+
+        assert_eq!(counts.len(), 12);
+        assert!(counts.values().all(|count| *count == 3));
+    }
+
+    #[test]
+    fn visual_key_count_follows_fifteen_clear_count() {
+        let run = start_run_with_seed_at(
+            "run-types-fifteen".to_string(),
+            "user-1".to_string(),
+            "profile-1".to_string(),
+            &test_config(15),
+            42,
+            1_000,
+        )
+        .expect("run should start");
+
+        let mut counts = BTreeMap::<String, u32>::new();
+        let mut item_types_by_visual_key = BTreeMap::<String, Vec<String>>::new();
+        for item in &run.items {
+            *counts.entry(item.visual_key.clone()).or_default() += 1;
+            item_types_by_visual_key
+                .entry(item.visual_key.clone())
+                .or_default()
+                .push(item.item_type_id.clone());
+        }
+
+        assert_eq!(counts.len(), 15);
+        assert!(counts.values().all(|count| *count == 3));
+        assert!(item_types_by_visual_key.values().all(|item_type_ids| {
+            item_type_ids
+                .iter()
+                .all(|item_type_id| item_type_id == &item_type_ids[0])
+        }));
+    }
+
+    #[test]
+    fn item_type_count_is_capped_at_twenty_five() {
+        let run = start_run_with_seed_at(
+            "run-types-large".to_string(),
+            "user-1".to_string(),
+            "profile-1".to_string(),
+            &test_config(100),
+            42,
+            1_000,
+        )
+        .expect("run should start");
+
+        let mut counts = BTreeMap::<String, u32>::new();
+        for item in &run.items {
+            *counts.entry(item.item_type_id.clone()).or_default() += 1;
+        }
+
+        assert_eq!(counts.len(), 25);
+        assert!(counts.values().all(|count| count % 3 == 0));
+    }
+
     #[test]
     fn initial_run_uses_slightly_different_item_sizes() {
         let run = start_run_with_seed_at(
@@ -647,9 +759,58 @@ mod tests {
     }
 
     #[test]
-    fn fruit_theme_generates_fruit_visuals_inside_board() {
+    fn size_tier_plan_follows_ratio_for_twenty_five_types() {
+        let plan = resolve_size_tier_plan(25);
+        let mut counts = BTreeMap::<&str, usize>::new();
+        for rule in plan {
+            *counts.entry(rule.tier).or_default() += 1;
+            match rule.tier {
+                "XL" => assert!((1.60..=2.30).contains(&rule.relative_volume)),
+                "L" => assert!((1.25..=1.60).contains(&rule.relative_volume)),
+                "M" => assert_eq!(rule.relative_volume, 1.00),
+                "XS" => assert!((0.65..=0.85).contains(&rule.relative_volume)),
+                "S" => assert!((0.35..=0.50).contains(&rule.relative_volume)),
+                _ => panic!("unknown size tier"),
+            }
+        }
+
+        assert_eq!(counts.get("XL"), Some(&5));
+        assert_eq!(counts.get("L"), Some(&8));
+        assert_eq!(counts.get("M"), Some(&7));
+        assert_eq!(counts.get("XS"), Some(&4));
+        assert_eq!(counts.get("S"), Some(&1));
+    }
+
+    #[test]
+    fn same_visual_key_keeps_one_size_in_run() {
         let run = start_run_with_seed_at(
-            "run-fruit".to_string(),
+            "run-size-unique".to_string(),
+            "user-1".to_string(),
+            "profile-1".to_string(),
+            &test_config(30),
+            42,
+            1_000,
+        )
+        .expect("run should start");
+
+        let mut radii_by_visual_key = BTreeMap::<String, Vec<u32>>::new();
+        for item in &run.items {
+            radii_by_visual_key
+                .entry(item.visual_key.clone())
+                .or_default()
+                .push((item.radius * 10_000.0).round() as u32);
+        }
+
+        assert_eq!(radii_by_visual_key.len(), 25);
+        assert!(radii_by_visual_key.values().all(|radii| {
+            radii.iter().all(|radius| radius == &radii[0])
+        }));
+    }
+
+    #[test]
+    fn block_visuals_stay_inside_board() {
+        let run = start_run_with_seed_at(
+            "run-blocks".to_string(),
             "user-1".to_string(),
             "profile-1".to_string(),
             &test_config(10),
@@ -663,10 +824,7 @@ mod tests {
             .iter()
             .map(|item| item.visual_key.as_str())
             .collect::<Vec<_>>();
-        assert!(visual_keys.contains(&"watermelon-green"));
-        assert!(visual_keys.contains(&"apple-red"));
-        assert!(visual_keys.contains(&"banana-yellow"));
-        assert!(!visual_keys.contains(&"red_circle"));
+        assert!(visual_keys.iter().all(|visual_key| visual_key.starts_with("block-")));
 
         for item in &run.items {
             let dx = item.x - MATCH3D_BOARD_CENTER;
@@ -684,38 +842,31 @@ mod tests {
     }
 
     #[test]
-    fn fruit_theme_uses_common_sense_relative_sizes() {
+    fn twenty_five_or_less_does_not_repeat_visual_keys() {
         let run = start_run_with_seed_at(
-            "run-fruit-size".to_string(),
+            "run-block-unique".to_string(),
             "user-1".to_string(),
             "profile-1".to_string(),
-            &test_config(10),
+            &test_config(25),
             27,
             1_000,
         )
         .expect("run should start");
 
-        let max_radius_for_visual = |visual_key: &str| {
-            run.items
-                .iter()
-                .filter(|item| item.visual_key == visual_key)
-                .map(|item| item.radius)
-                .fold(0.0, f32::max)
-        };
+        let mut counts = BTreeMap::<String, u32>::new();
+        for item in &run.items {
+            *counts.entry(item.visual_key.clone()).or_default() += 1;
+        }
 
-        let watermelon = max_radius_for_visual("watermelon-green");
-        let apple = max_radius_for_visual("apple-red");
-        let grape = max_radius_for_visual("grape-purple");
-
-        assert!(watermelon > apple);
-        assert!(apple > grape);
+        assert_eq!(counts.len(), 25);
+        assert!(counts.values().all(|count| *count == 3));
     }
 
     #[test]
-    fn non_fruit_theme_generates_shape_visuals() {
+    fn block_visuals_have_different_relative_sizes() {
         let config = build_creator_config("玩具", None, 3, 4).expect("config should be valid");
         let run = start_run_with_seed_at(
-            "run-shapes".to_string(),
+            "run-block-size".to_string(),
             "user-1".to_string(),
             "profile-1".to_string(),
             &config,
@@ -724,14 +875,15 @@ mod tests {
         )
         .expect("run should start");
 
-        let visual_keys = run
+        let mut radii = run
             .items
             .iter()
-            .map(|item| item.visual_key.as_str())
+            .map(|item| (item.radius * 1_000.0).round() as u32)
             .collect::<Vec<_>>();
-        assert!(visual_keys.contains(&"red_circle"));
-        assert!(visual_keys.contains(&"yellow_triangle"));
-        assert!(!visual_keys.contains(&"apple-red"));
+        radii.sort();
+        radii.dedup();
+
+        assert!(radii.len() > 1);
     }
 
     #[test]
diff --git a/server-rs/crates/module-match3d/src/domain.rs b/server-rs/crates/module-match3d/src/domain.rs
index 890e5501..53e50b08 100644
--- a/server-rs/crates/module-match3d/src/domain.rs
+++ b/server-rs/crates/module-match3d/src/domain.rs
@@ -9,6 +9,8 @@ pub const MATCH3D_WORK_ID_PREFIX: &str = "match3d-work-";
 pub const MATCH3D_RUN_ID_PREFIX: &str = "match3d-run-";
 pub const MATCH3D_TRAY_SLOT_COUNT: u32 = 7;
 pub const MATCH3D_ITEMS_PER_CLEAR: u32 = 3;
+pub const MATCH3D_MAX_ITEM_TYPE_COUNT: u32 = 25;
+pub(crate) const MATCH3D_MAX_ITEM_TYPE_COUNT_USIZE: usize = 25;
 pub const MATCH3D_MIN_DIFFICULTY: u32 = 1;
 pub const MATCH3D_MAX_DIFFICULTY: u32 = 10;
 pub const MATCH3D_DEFAULT_DURATION_LIMIT_MS: u64 = 10 * 60 * 1000;
@@ -16,32 +18,34 @@ pub const MATCH3D_BOARD_CENTER: f32 = 0.5;
 pub const MATCH3D_BOARD_RADIUS: f32 = 0.5;
 pub const MATCH3D_BOARD_SAFE_MARGIN: f32 = 0.035;
 
-// 中文注释：首版 demo 不接真实图片生成，但水果题材必须先给出可辨认的水果内置视觉键。
-pub(crate) const MATCH3D_FRUIT_VISUAL_KEYS: [&str; 10] = [
-    "watermelon-green",
-    "apple-red",
-    "banana-yellow",
-    "grape-purple",
-    "melon-green",
-    "berry-blue",
-    "peach-pink",
-    "plum-indigo",
-    "lime-lime",
-    "orange-orange",
-];
-
-// 中文注释：非水果题材使用颜色形状兜底 key；前端必须逐个渲染，不能统一兜成同一图案。
-pub(crate) const MATCH3D_SHAPE_VISUAL_KEYS: [&str; 10] = [
-    "red_circle",
-    "yellow_triangle",
-    "purple_diamond",
-    "green_square",
-    "blue_star",
-    "orange_hexagon",
-    "cyan_capsule",
-    "pink_heart",
-    "lime_leaf",
-    "white_moon",
+// 中文注释：首版 demo 不接真实图片生成，当前先用程序化积木件作为稳定可辨认的默认素材。
+// 中文注释：当前 demo 使用 25 个积木件作为默认可消除物资源池，前端据 visual_key 程序化生成 3D 模型。
+pub(crate) const MATCH3D_BLOCK_VISUAL_KEYS: [&str; MATCH3D_MAX_ITEM_TYPE_COUNT_USIZE] = [
+    "block-red-2x4",
+    "block-blue-1x2",
+    "block-yellow-2x2",
+    "block-green-1x4",
+    "block-orange-1x6",
+    "block-white-1x1",
+    "block-black-1x8",
+    "block-tan-2x3",
+    "block-lime-1x2",
+    "block-darkred-2x2",
+    "block-blue-1x4",
+    "block-pink-2x4",
+    "block-gray-1x6",
+    "block-lavender-tile-2x2",
+    "block-teal-tile-1x3",
+    "block-mint-tile-1x4",
+    "block-magenta-tile-2x2",
+    "block-orange-tile-2x2-stud",
+    "block-purple-slope-1x2",
+    "block-brown-slope-1x2",
+    "block-sky-slope-2x2",
+    "block-green-cylinder",
+    "block-clear-ring",
+    "block-mint-arch",
+    "block-gold-cone",
 ];
 
 #[cfg_attr(feature = "spacetime-types", derive(SpacetimeType))]
diff --git a/src/Match3DPlaygroundApp.tsx b/src/Match3DPlaygroundApp.tsx
index 68a56989..ba37e6a8 100644
--- a/src/Match3DPlaygroundApp.tsx
+++ b/src/Match3DPlaygroundApp.tsx
@@ -12,7 +12,13 @@ import {
 } from './services/match3d-runtime';
 
 function buildInitialRun() {
-  return startLocalMatch3DRun(12);
+  const params = new URLSearchParams(window.location.search);
+  const clearCountParam = params.get('clearCount') ?? params.get('count');
+  const clearCount =
+    clearCountParam === null ? 12 : Number.parseInt(clearCountParam, 10);
+  return startLocalMatch3DRun(
+    Number.isFinite(clearCount) && clearCount > 0 ? clearCount : 12,
+  );
 }
 
 export default function Match3DPlaygroundApp() {
diff --git a/src/components/match3d-runtime/Match3DPhysicsBoard.tsx b/src/components/match3d-runtime/Match3DPhysicsBoard.tsx
index c4e1078e..c59c0f8a 100644
--- a/src/components/match3d-runtime/Match3DPhysicsBoard.tsx
+++ b/src/components/match3d-runtime/Match3DPhysicsBoard.tsx
@@ -8,7 +8,11 @@ import {
   isItemState,
   resolveRenderableItemFrame,
 } from './match3dRuntimePresentation';
-import { resolveGeometryAsset } from './match3dVisualAssets';
+import {
+  resolveGeometryAsset,
+  type Match3DGeometryAsset,
+  type Match3DGeometryShape,
+} from './match3dVisualAssets';
 
 type Match3DPhysicsBoardProps = {
   run: Match3DRunSnapshot;
@@ -21,15 +25,17 @@ type ThreeModule = typeof import('three');
 type CannonModule = typeof import('cannon-es');
 type PhysicsBody = import('cannon-es').Body;
 type PhysicsWorld = import('cannon-es').World;
-type ThreeMesh = import('three').Mesh;
+type ThreeObject3D = import('three').Object3D;
 type ThreeScene = import('three').Scene;
 type ThreeRenderer = import('three').WebGLRenderer;
-type ThreeCamera = import('three').PerspectiveCamera;
+type ThreeCamera = import('three').OrthographicCamera;
 
 type PhysicsEntry = {
   item: Match3DItemSnapshot;
   body: PhysicsBody;
-  mesh: ThreeMesh;
+  lockReadableTop: boolean;
+  mesh: ThreeObject3D;
+  topRotationY: number;
 };
 
 type PhysicsRuntime = {
@@ -48,11 +54,19 @@ const MATCH3D_POT_FLOOR_RADIUS = 4.75;
 const MATCH3D_POT_INNER_RADIUS = 4.52;
 const MATCH3D_POT_OUTER_RADIUS = 5.18;
 const MATCH3D_POT_WALL_HEIGHT = 2.15;
-const MATCH3D_ITEM_ACTIVITY_RADIUS = 3.82;
-const MATCH3D_ITEM_POSITION_RADIUS = 3.64;
-const MATCH3D_ITEM_SPAWN_HEIGHT = 1.85;
+const MATCH3D_ITEM_ACTIVITY_RADIUS = 3.58;
+const MATCH3D_ITEM_POSITION_RADIUS = 3.34;
+const MATCH3D_ITEM_SPAWN_HEIGHT = 1.25;
+const MATCH3D_ITEM_STACK_HEIGHT_STEP = 0.024;
+const MATCH3D_CENTER_GRAVITY_COEFFICIENT = 0;
 const MATCH3D_BOARD_CENTER = 0.5;
 const MATCH3D_PHYSICS_STEP = 1 / 60;
+const MATCH3D_CAMERA_HALF_SIZE = 6.15;
+export const MATCH3D_EXTRUDED_READABLE_SHAPES: ReadonlySet<Match3DGeometryShape> =
+  new Set([
+    'ring',
+    'arch',
+  ]);
 
 function hasWebGLSupport() {
   try {
@@ -67,7 +81,7 @@ function hasWebGLSupport() {
 
 function toWorldPosition(item: Match3DItemSnapshot) {
   const frame = resolveRenderableItemFrame(item);
-  const radius = Math.max(0.32, frame.radius * MATCH3D_POT_FLOOR_RADIUS * 1.32);
+  const radius = Math.max(0.28, frame.radius * MATCH3D_POT_FLOOR_RADIUS * 1.02);
   let x = (frame.x - MATCH3D_BOARD_CENTER) * MATCH3D_ITEM_POSITION_RADIUS * 2;
   let z = (frame.y - MATCH3D_BOARD_CENTER) * MATCH3D_ITEM_POSITION_RADIUS * 2;
   const horizontalDistance = Math.hypot(x, z);
@@ -112,92 +126,330 @@ function constrainBodyInsidePot(entry: PhysicsEntry) {
   }
 }
 
+function applyCenterGravity(entry: PhysicsEntry) {
+  if (MATCH3D_CENTER_GRAVITY_COEFFICIENT <= 0) {
+    return;
+  }
+
+  const horizontalDistance = Math.hypot(
+    entry.body.position.x,
+    entry.body.position.z,
+  );
+  if (horizontalDistance <= 0.08) {
+    return;
+  }
+
+  const visualRadius = toWorldPosition(entry.item).radius;
+  const maxDistance = Math.max(
+    0.1,
+    MATCH3D_ITEM_ACTIVITY_RADIUS - visualRadius * 1.05,
+  );
+  const edgePressure = Math.min(1, horizontalDistance / maxDistance);
+  const centerFalloff = Math.min(1, Math.max(0, (horizontalDistance - 1.15) / maxDistance));
+  const forceStrength =
+    MATCH3D_CENTER_GRAVITY_COEFFICIENT *
+    entry.body.mass *
+    (10.5 + edgePressure * 13) *
+    centerFalloff;
+
+  // 中文注释：中心引力只拉水平面，垂直方向仍交给锅底重力和物体堆叠处理。
+  entry.body.force.x +=
+    (-entry.body.position.x / horizontalDistance) * forceStrength;
+  entry.body.force.z +=
+    (-entry.body.position.z / horizontalDistance) * forceStrength;
+}
+
 function createCannonShape(
   cannon: CannonModule,
   shape: ReturnType<typeof resolveGeometryAsset>['shape'],
   radius: number,
 ) {
   switch (shape) {
-    case 'circle':
-    case 'heart':
-      return new cannon.Sphere(radius);
-    case 'square':
-      return new cannon.Box(new cannon.Vec3(radius, radius, radius));
-    case 'triangle':
-      return new cannon.Cylinder(radius * 0.55, radius, radius * 1.5, 3);
-    case 'diamond':
-      return new cannon.Sphere(radius * 0.92);
-    case 'star':
-      return new cannon.Sphere(radius * 0.88);
-    case 'hexagon':
-      return new cannon.Cylinder(radius, radius, radius * 1.2, 6);
-    case 'capsule':
-      return new cannon.Box(new cannon.Vec3(radius * 1.28, radius * 0.68, radius * 0.68));
-    case 'trapezoid':
-      return new cannon.Box(new cannon.Vec3(radius * 1.02, radius * 0.78, radius * 0.78));
-    case 'parallelogram':
-      return new cannon.Box(new cannon.Vec3(radius * 1.12, radius * 0.72, radius * 0.72));
+    case 'ring':
+    case 'cylinder':
+    case 'cone':
+      return new cannon.Cylinder(radius * 0.82, radius * 0.82, radius * 1.1, 18);
+    case 'slope':
+      return new cannon.Box(new cannon.Vec3(radius * 1.08, radius * 0.72, radius * 0.66));
+    case 'arch':
+      return new cannon.Box(new cannon.Vec3(radius * 1.35, radius * 0.92, radius * 0.56));
+    case 'tile':
+      return new cannon.Box(new cannon.Vec3(radius * 1.08, radius * 0.36, radius * 0.72));
+    case 'brick':
     default:
-      return new cannon.Sphere(radius);
+      return new cannon.Box(new cannon.Vec3(radius * 1.08, radius * 0.72, radius * 0.72));
   }
 }
 
-function createThreeGeometry(
+function buildPointShape(
   three: ThreeModule,
-  shape: ReturnType<typeof resolveGeometryAsset>['shape'],
+  radius: number,
+  points: Array<[number, number]>,
+) {
+  const shape = new three.Shape();
+  points.forEach(([x, y], index) => {
+    if (index === 0) {
+      shape.moveTo(x * radius, y * radius);
+    } else {
+      shape.lineTo(x * radius, y * radius);
+    }
+  });
+  shape.closePath();
+  return shape;
+}
+
+function buildRingShape(three: ThreeModule, radius: number) {
+  const shape = new three.Shape();
+  shape.absarc(0, 0, radius * 0.92, 0, Math.PI * 2, false);
+  const hole = new three.Path();
+  hole.absarc(0, 0, radius * 0.43, 0, Math.PI * 2, true);
+  shape.holes.push(hole);
+  return shape;
+}
+
+function buildReadableShape(
+  three: ThreeModule,
+  shape: Match3DGeometryShape,
   radius: number,
 ) {
   switch (shape) {
-    case 'circle':
-      return new three.SphereGeometry(radius, 28, 18);
-    case 'square':
-      return new three.BoxGeometry(radius * 1.65, radius * 1.65, radius * 1.65);
-    case 'triangle':
-      return new three.ConeGeometry(radius, radius * 1.9, 3);
-    case 'diamond':
-      return new three.OctahedronGeometry(radius * 1.04, 1);
-    case 'star':
-      return new three.IcosahedronGeometry(radius * 0.96, 0);
-    case 'hexagon':
-      return new three.CylinderGeometry(radius, radius, radius * 1.35, 6);
-    case 'capsule':
-      return new three.CapsuleGeometry(radius * 0.62, radius * 1.18, 6, 14);
-    case 'heart':
-      return new three.SphereGeometry(radius, 24, 16);
-    case 'trapezoid':
-      return new three.CylinderGeometry(radius * 0.78, radius * 1.12, radius * 1.1, 4);
-    case 'parallelogram':
-      return new three.BoxGeometry(radius * 1.9, radius * 1.05, radius * 1.05);
+    case 'ring':
+      return buildRingShape(three, radius);
+    case 'arch':
+      return buildPointShape(three, radius, [
+        [-1, 0.8],
+        [1, 0.8],
+        [1, -0.7],
+        [0.42, -0.7],
+        [0.42, 0.24],
+        [-0.42, 0.24],
+        [-0.42, -0.7],
+        [-1, -0.7],
+      ]);
     default:
-      return new three.SphereGeometry(radius, 28, 18);
+      return null;
   }
 }
 
+function createExtrudedReadableGeometry(
+  three: ThreeModule,
+  shape: Match3DGeometryShape,
+  radius: number,
+) {
+  const path = buildReadableShape(three, shape, radius);
+  if (!path) {
+    return null;
+  }
+  const geometry = new three.ExtrudeGeometry(path, {
+    bevelEnabled: true,
+    bevelSegments: 2,
+    bevelSize: radius * 0.045,
+    bevelThickness: radius * 0.04,
+    depth: radius * 0.42,
+    steps: 1,
+  });
+  geometry.center();
+  geometry.rotateX(-Math.PI / 2);
+  return geometry;
+}
+
+export function createMatch3DThreeGeometry(
+  three: ThreeModule,
+  shape: Match3DGeometryShape,
+  radius: number,
+) {
+  const readableGeometry = createExtrudedReadableGeometry(three, shape, radius);
+  if (readableGeometry) {
+    return readableGeometry;
+  }
+
+  switch (shape) {
+    case 'cylinder':
+      return new three.CylinderGeometry(radius * 0.72, radius * 0.72, radius * 1.35, 26);
+    case 'cone':
+      return new three.ConeGeometry(radius * 0.78, radius * 1.62, 28);
+    case 'tile':
+    case 'brick':
+    case 'slope':
+    case 'arch':
+    default:
+      return new three.BoxGeometry(radius * 1.8, radius * 0.9, radius * 1.2);
+  }
+}
+
+function createRoundedBlockBase(
+  three: ThreeModule,
+  asset: Match3DGeometryAsset,
+  radius: number,
+) {
+  const width = radius * (0.9 + asset.studsX * 0.62);
+  const depth = radius * (0.9 + asset.studsY * 0.62);
+  const height = Math.max(radius * 0.24, radius * asset.heightScale);
+  return new three.BoxGeometry(width, height, depth);
+}
+
+function createStudGeometry(three: ThreeModule, radius: number) {
+  return new three.CylinderGeometry(radius * 0.18, radius * 0.18, radius * 0.12, 20);
+}
+
+function createSlopeGeometry(
+  three: ThreeModule,
+  asset: Match3DGeometryAsset,
+  radius: number,
+) {
+  const width = radius * (1 + asset.studsX * 0.66);
+  const depth = radius * (0.95 + asset.studsY * 0.62);
+  const height = radius * asset.heightScale;
+  const halfW = width / 2;
+  const halfD = depth / 2;
+  const halfH = height / 2;
+  const vertices = new Float32Array([
+    -halfW, -halfH, -halfD,
+    halfW, -halfH, -halfD,
+    halfW, -halfH, halfD,
+    -halfW, -halfH, halfD,
+    halfW, halfH, -halfD,
+    halfW, halfH, halfD,
+  ]);
+  const indices = [
+    0, 1, 2, 0, 2, 3,
+    1, 4, 5, 1, 5, 2,
+    3, 2, 5, 3, 5, 0,
+    0, 5, 4, 0, 4, 1,
+  ];
+  const geometry = new three.BufferGeometry();
+  geometry.setAttribute('position', new three.BufferAttribute(vertices, 3));
+  geometry.setIndex(indices);
+  geometry.computeVertexNormals();
+  return geometry;
+}
+
+function addBrickStuds(
+  three: ThreeModule,
+  group: import('three').Group,
+  asset: Match3DGeometryAsset,
+  radius: number,
+  material: import('three').Material,
+) {
+  if (asset.shape === 'tile') {
+    return;
+  }
+  const studGeometry = createStudGeometry(three, radius);
+  const width = radius * (0.9 + asset.studsX * 0.62);
+  const depth = radius * (0.9 + asset.studsY * 0.62);
+  const y = Math.max(radius * 0.24, radius * asset.heightScale) / 2 + radius * 0.06;
+  for (let row = 0; row < asset.studsY; row += 1) {
+    for (let column = 0; column < asset.studsX; column += 1) {
+      const stud = new three.Mesh(studGeometry.clone(), material);
+      stud.position.set(
+        ((column + 0.5) / asset.studsX - 0.5) * width * 0.74,
+        y,
+        ((row + 0.5) / asset.studsY - 0.5) * depth * 0.72,
+      );
+      group.add(stud);
+    }
+  }
+}
+
+function createBlockMesh(
+  three: ThreeModule,
+  asset: Match3DGeometryAsset,
+  radius: number,
+  material: import('three').Material,
+) {
+  const group = new three.Group();
+  let baseGeometry: import('three').BufferGeometry;
+  if (asset.shape === 'slope') {
+    baseGeometry = createSlopeGeometry(three, asset, radius);
+  } else if (asset.shape === 'cylinder') {
+    baseGeometry = new three.CylinderGeometry(radius * 0.58, radius * 0.58, radius * 1.18, 28);
+  } else if (asset.shape === 'cone') {
+    baseGeometry = new three.ConeGeometry(radius * 0.68, radius * 1.48, 30);
+  } else if (MATCH3D_EXTRUDED_READABLE_SHAPES.has(asset.shape)) {
+    baseGeometry = createMatch3DThreeGeometry(three, asset.shape, radius);
+  } else {
+    baseGeometry = createRoundedBlockBase(three, asset, radius);
+  }
+  const base = new three.Mesh(baseGeometry, material);
+  group.add(base);
+
+  if (asset.shape === 'brick' || asset.shape === 'slope') {
+    addBrickStuds(three, group, asset, radius, material);
+  }
+  if (asset.shape === 'cylinder') {
+    const topStud = new three.Mesh(createStudGeometry(three, radius * 1.2), material);
+    topStud.position.y = radius * 0.65;
+    group.add(topStud);
+  }
+  if (asset.shape === 'cone') {
+    const lip = new three.Mesh(
+      new three.TorusGeometry(radius * 0.38, radius * 0.07, 8, 24),
+      material,
+    );
+    lip.rotation.x = Math.PI / 2;
+    lip.position.y = radius * 0.52;
+    group.add(lip);
+  }
+  return group;
+}
+
+function markObjectForItem(object: ThreeObject3D, itemInstanceId: string) {
+  object.userData.itemInstanceId = itemInstanceId;
+  object.traverse((child) => {
+    child.userData.itemInstanceId = itemInstanceId;
+    child.castShadow = true;
+    child.receiveShadow = true;
+  });
+}
+
+function disposeThreeObject(object: ThreeObject3D) {
+  object.traverse((child) => {
+    const maybeMesh = child as import('three').Mesh;
+    maybeMesh.geometry?.dispose();
+    const material = maybeMesh.material;
+    if (Array.isArray(material)) {
+      material.forEach((item) => item.dispose());
+    } else {
+      material?.dispose();
+    }
+  });
+}
+
+export function createMatch3DItemMesh(
+  three: ThreeModule,
+  item: Match3DItemSnapshot,
+) {
+  const asset = resolveGeometryAsset(item.visualKey);
+  const position = toWorldPosition(item);
+  const material = new three.MeshStandardMaterial({
+    color: asset.fill,
+    emissive: asset.fill,
+    emissiveIntensity: 0.08,
+    metalness: 0.16,
+    opacity: asset.transparent ? 0.58 : 1,
+    roughness: 0.46,
+    transparent: Boolean(asset.transparent),
+    side: MATCH3D_EXTRUDED_READABLE_SHAPES.has(asset.shape)
+      ? three.DoubleSide
+      : three.FrontSide,
+  });
+  const mesh = createBlockMesh(three, asset, position.radius, material);
+  markObjectForItem(mesh, item.itemInstanceId);
+  return {
+    lockReadableTop: MATCH3D_EXTRUDED_READABLE_SHAPES.has(asset.shape),
+    mesh,
+    radius: position.radius,
+    shape: asset.shape,
+    topRotationY: ((item.layer % 12) / 12) * Math.PI * 2,
+    position,
+  };
+}
+
 function createItemMesh(
   three: ThreeModule,
   item: Match3DItemSnapshot,
 ) {
-  const asset = resolveGeometryAsset(item.visualKey);
-  const position = toWorldPosition(item);
-  const geometry = createThreeGeometry(three, asset.shape, position.radius);
-  if (asset.shape === 'parallelogram') {
-    geometry.applyMatrix4(new three.Matrix4().makeShear(0.28, 0, 0, 0, 0, 0));
-  }
-  if (asset.shape === 'heart') {
-    geometry.scale(1, 0.92, 0.82);
-  }
-  const material = new three.MeshStandardMaterial({
-    color: asset.fill,
-    emissive: asset.fill,
-    emissiveIntensity: 0.08,
-    metalness: 0.16,
-    roughness: 0.46,
-  });
-  const mesh = new three.Mesh(geometry, material);
-  mesh.castShadow = true;
-  mesh.receiveShadow = true;
-  mesh.userData.itemInstanceId = item.itemInstanceId;
-  return { mesh, shape: asset.shape, radius: position.radius, position };
+  return createMatch3DItemMesh(three, item);
 }
 
 function disposeRuntime(runtime: PhysicsRuntime | null) {
@@ -208,18 +460,182 @@ function disposeRuntime(runtime: PhysicsRuntime | null) {
     window.cancelAnimationFrame(runtime.animationId);
   }
   runtime.entries.forEach((entry) => {
-    entry.mesh.geometry.dispose();
-    const material = entry.mesh.material;
-    if (Array.isArray(material)) {
-      material.forEach((item) => item.dispose());
-    } else {
-      material.dispose();
-    }
+    disposeThreeObject(entry.mesh);
   });
   runtime.renderer.dispose();
   runtime.renderer.domElement.remove();
 }
 
+type TrayPreviewRuntime = {
+  animationId: number | null;
+  camera: ThreeCamera;
+  entries: Map<string, ThreeObject3D>;
+  renderer: ThreeRenderer;
+  scene: ThreeScene;
+  three: ThreeModule;
+};
+
+function disposeTrayPreview(runtime: TrayPreviewRuntime | null) {
+  if (!runtime) {
+    return;
+  }
+  if (runtime.animationId !== null) {
+    window.cancelAnimationFrame(runtime.animationId);
+  }
+  runtime.entries.forEach((mesh) => {
+    disposeThreeObject(mesh);
+  });
+  runtime.entries.clear();
+  runtime.renderer.dispose();
+  runtime.renderer.domElement.remove();
+}
+
+export function Match3DTrayPreviewBoard({
+  slotItems,
+}: {
+  slotItems: Array<Match3DItemSnapshot | null>;
+}) {
+  const containerRef = useRef<HTMLDivElement | null>(null);
+  const runtimeRef = useRef<TrayPreviewRuntime | null>(null);
+  const [ready, setReady] = useState(false);
+
+  useEffect(() => {
+    let cancelled = false;
+    let cleanupResize: (() => void) | undefined;
+
+    async function setup() {
+      const container = containerRef.current;
+      if (!container || !hasWebGLSupport()) {
+        return;
+      }
+
+      const three = await import('three');
+      if (cancelled || !containerRef.current) {
+        return;
+      }
+
+      const renderer = new three.WebGLRenderer({
+        alpha: true,
+        antialias: true,
+      });
+      renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 1.8));
+      renderer.outputColorSpace = three.SRGBColorSpace;
+      container.appendChild(renderer.domElement);
+
+      const scene = new three.Scene();
+      scene.background = null;
+      const camera = new three.OrthographicCamera(-3.7, 3.7, 1.1, -1.1, 0.1, 40);
+      camera.position.set(4.2, 3.2, 4.2);
+      camera.lookAt(0, 0, 0);
+
+      scene.add(new three.AmbientLight(0xffffff, 1.55));
+      const keyLight = new three.DirectionalLight(0xffffff, 2.2);
+      keyLight.position.set(-2.6, 4.4, 3.2);
+      scene.add(keyLight);
+      const fillLight = new three.DirectionalLight(0xfef3c7, 0.95);
+      fillLight.position.set(3.2, 2.8, -2.8);
+      scene.add(fillLight);
+
+      const resize = () => {
+        const rect = container.getBoundingClientRect();
+        const width = Math.max(1, rect.width);
+        const height = Math.max(1, rect.height);
+        renderer.setSize(width, height, false);
+        renderer.render(scene, camera);
+      };
+      resize();
+
+      const ro = new ResizeObserver(resize);
+      ro.observe(container);
+
+      const animate = () => {
+        const activeRuntime = runtimeRef.current;
+        if (!activeRuntime) {
+          return;
+        }
+        renderer.render(scene, camera);
+        activeRuntime.animationId = window.requestAnimationFrame(animate);
+      };
+      runtimeRef.current = {
+        animationId: window.requestAnimationFrame(animate),
+        camera,
+        entries: new Map(),
+        renderer,
+        scene,
+        three,
+      };
+      setReady(true);
+
+      cleanupResize = () => ro.disconnect();
+    }
+
+    void setup();
+
+    return () => {
+      cancelled = true;
+      cleanupResize?.();
+      disposeTrayPreview(runtimeRef.current);
+      runtimeRef.current = null;
+      setReady(false);
+    };
+  }, []);
+
+  useEffect(() => {
+    const runtime = runtimeRef.current;
+    if (!runtime) {
+      return;
+    }
+    const activeIds = new Set(
+      slotItems
+        .filter((item): item is Match3DItemSnapshot => Boolean(item))
+        .map((item) => item.itemInstanceId),
+    );
+
+    runtime.entries.forEach((mesh, itemInstanceId) => {
+      if (!activeIds.has(itemInstanceId)) {
+        runtime.scene.remove(mesh);
+        disposeThreeObject(mesh);
+        runtime.entries.delete(itemInstanceId);
+      }
+    });
+
+    slotItems.forEach((item, slotIndex) => {
+      if (!item) {
+        return;
+      }
+      let mesh = runtime.entries.get(item.itemInstanceId);
+      if (!mesh) {
+        const preview = createMatch3DItemMesh(runtime.three, item);
+        mesh = preview.mesh;
+        mesh.rotation.set(-0.12, Math.PI / 4, 0.08);
+
+        const bounds = new runtime.three.Box3().setFromObject(mesh);
+        const size = bounds.getSize(new runtime.three.Vector3());
+        const maxDimension = Math.max(size.x, size.y, size.z, 0.001);
+        mesh.scale.multiplyScalar(0.82 / maxDimension);
+        const centeredBounds = new runtime.three.Box3().setFromObject(mesh);
+        const center = centeredBounds.getCenter(new runtime.three.Vector3());
+        mesh.position.sub(center);
+        runtime.scene.add(mesh);
+        runtime.entries.set(item.itemInstanceId, mesh);
+      }
+      mesh.position.x = (slotIndex - 3) * 1.03;
+      mesh.position.y = 0;
+      mesh.position.z = 0;
+    });
+
+    runtime.renderer.render(runtime.scene, runtime.camera);
+  }, [ready, slotItems]);
+
+  return (
+    <div
+      ref={containerRef}
+      className="pointer-events-none absolute inset-0 z-10"
+      data-testid="match3d-tray-model-board"
+    />
+  );
+}
+
 export function Match3DPhysicsBoard({
   run,
   disabled,
@@ -272,13 +688,29 @@ export function Match3DPhysicsBoard({
         renderer.shadowMap.enabled = true;
         renderer.outputColorSpace = three.SRGBColorSpace;
         container.appendChild(renderer.domElement);
+        const handleContextLost = (event: Event) => {
+          event.preventDefault();
+          fallbackRef.current();
+        };
+        renderer.domElement.addEventListener(
+          'webglcontextlost',
+          handleContextLost,
+          false,
+        );
 
         const scene = new three.Scene();
         scene.background = null;
 
-        const camera = new three.PerspectiveCamera(32, 1, 0.1, 80);
-        camera.position.set(0, 14.8, 2.3);
-        camera.lookAt(0, 0.48, 0);
+        const camera = new three.OrthographicCamera(
+          -MATCH3D_CAMERA_HALF_SIZE,
+          MATCH3D_CAMERA_HALF_SIZE,
+          MATCH3D_CAMERA_HALF_SIZE,
+          -MATCH3D_CAMERA_HALF_SIZE,
+          0.1,
+          80,
+        );
+        camera.position.set(0, 17.5, 0.01);
+        camera.lookAt(0, 0, 0);
 
         const ambient = new three.AmbientLight(0xffffff, 1.28);
         scene.add(ambient);
@@ -407,7 +839,10 @@ export function Match3DPhysicsBoard({
           const rect = container.getBoundingClientRect();
           const size = Math.max(1, Math.min(rect.width, rect.height));
           renderer.setSize(size, size, false);
-          camera.aspect = 1;
+          camera.left = -MATCH3D_CAMERA_HALF_SIZE;
+          camera.right = MATCH3D_CAMERA_HALF_SIZE;
+          camera.top = MATCH3D_CAMERA_HALF_SIZE;
+          camera.bottom = -MATCH3D_CAMERA_HALF_SIZE;
           camera.updateProjectionMatrix();
         };
         resize();
@@ -423,9 +858,13 @@ export function Match3DPhysicsBoard({
           }
           const delta = Math.min(0.04, Math.max(0.001, (now - lastTime) / 1000));
           lastTime = now;
+          activeRuntime.entries.forEach((entry) => {
+            applyCenterGravity(entry);
+          });
           activeRuntime.world.step(MATCH3D_PHYSICS_STEP, delta, 3);
 
           activeRuntime.entries.forEach((entry) => {
+            applyCenterGravity(entry);
             constrainBodyInsidePot(entry);
             entry.mesh.position.set(
               entry.body.position.x,
@@ -433,11 +872,14 @@ export function Match3DPhysicsBoard({
               entry.body.position.z,
             );
             entry.mesh.quaternion.set(
-              entry.body.quaternion.x,
-              entry.body.quaternion.y,
-              entry.body.quaternion.z,
-              entry.body.quaternion.w,
+              entry.lockReadableTop ? 0 : entry.body.quaternion.x,
+              entry.lockReadableTop ? 0 : entry.body.quaternion.y,
+              entry.lockReadableTop ? 0 : entry.body.quaternion.z,
+              entry.lockReadableTop ? 1 : entry.body.quaternion.w,
             );
+            if (entry.lockReadableTop) {
+              entry.mesh.rotation.y = entry.topRotationY;
+            }
           });
 
           activeRuntime.renderer.render(activeRuntime.scene, activeRuntime.camera);
@@ -447,6 +889,11 @@ export function Match3DPhysicsBoard({
         setReady(true);
 
         return () => {
+          renderer.domElement.removeEventListener(
+            'webglcontextlost',
+            handleContextLost,
+            false,
+          );
           ro.disconnect();
         };
       } catch {
@@ -475,11 +922,7 @@ export function Match3DPhysicsBoard({
 
     const activeItemIds = new Set(
       run.items
-        .filter(
-          (item) =>
-            isItemState(item.state, 'in_board') ||
-            isItemState(item.state, 'flying'),
-        )
+        .filter((item) => isItemState(item.state, 'in_board'))
         .map((item) => item.itemInstanceId),
     );
 
@@ -487,29 +930,20 @@ export function Match3DPhysicsBoard({
       if (!activeItemIds.has(itemInstanceId)) {
         runtime.scene.remove(entry.mesh);
         runtime.world.removeBody(entry.body);
-        entry.mesh.geometry.dispose();
-        const material = entry.mesh.material;
-        if (Array.isArray(material)) {
-          material.forEach((item) => item.dispose());
-        } else {
-          material.dispose();
-        }
+        disposeThreeObject(entry.mesh);
         runtime.entries.delete(itemInstanceId);
       }
     });
 
     run.items.forEach((item) => {
-      if (
-        !isItemState(item.state, 'in_board') &&
-        !isItemState(item.state, 'flying')
-      ) {
+      if (!isItemState(item.state, 'in_board')) {
         return;
       }
 
       const existing = runtime.entries.get(item.itemInstanceId);
       if (existing) {
         existing.item = item;
-        existing.mesh.visible = isItemState(item.state, 'in_board');
+        existing.mesh.visible = true;
         return;
       }
 
@@ -521,7 +955,7 @@ export function Match3DPhysicsBoard({
         shape: createCannonShape(runtime.cannon, visual.shape, visual.radius),
         position: new runtime.cannon.Vec3(
           visual.position.x,
-          MATCH3D_ITEM_SPAWN_HEIGHT + item.layer * 0.055,
+          MATCH3D_ITEM_SPAWN_HEIGHT + item.layer * MATCH3D_ITEM_STACK_HEIGHT_STEP,
           visual.position.z,
         ),
       });
@@ -541,7 +975,9 @@ export function Match3DPhysicsBoard({
       runtime.entries.set(item.itemInstanceId, {
         body,
         item,
+        lockReadableTop: visual.lockReadableTop,
         mesh: visual.mesh,
+        topRotationY: visual.topRotationY,
       });
     });
   }, [ready, run.items, run.snapshotVersion]);
@@ -568,7 +1004,7 @@ export function Match3DPhysicsBoard({
           entry.mesh.visible,
       )
       .map((entry) => entry.mesh);
-    const hit = runtime.raycaster.intersectObjects(meshes, false)[0];
+    const hit = runtime.raycaster.intersectObjects(meshes, true)[0];
     const itemInstanceId =
       typeof hit?.object.userData.itemInstanceId === 'string'
         ? hit.object.userData.itemInstanceId
@@ -587,7 +1023,7 @@ export function Match3DPhysicsBoard({
   return (
     <div
       ref={containerRef}
-      className="absolute inset-0 z-10 overflow-hidden rounded-full"
+      className="absolute inset-0 z-10 overflow-visible"
       data-testid="match3d-physics-board"
       onPointerDown={handlePointerDown}
     >
diff --git a/src/components/match3d-runtime/Match3DRuntimeShell.test.tsx b/src/components/match3d-runtime/Match3DRuntimeShell.test.tsx
index a77d4969..23ac3537 100644
--- a/src/components/match3d-runtime/Match3DRuntimeShell.test.tsx
+++ b/src/components/match3d-runtime/Match3DRuntimeShell.test.tsx
@@ -2,7 +2,7 @@
 
 import { fireEvent, render, screen, waitFor } from '@testing-library/react';
 import { useEffect } from 'react';
-import { expect, test, vi } from 'vitest';
+import { afterEach, expect, test, vi } from 'vitest';
 
 import type {
   Match3DClickItemRequest,
@@ -12,16 +12,42 @@ import {
   confirmLocalMatch3DClick,
   startLocalMatch3DRun,
 } from '../../services/match3d-runtime';
+import {
+  MATCH3D_EXTRUDED_READABLE_SHAPES,
+  createMatch3DThreeGeometry,
+} from './Match3DPhysicsBoard';
+import { resolveGeometryAsset } from './match3dVisualAssets';
 import { Match3DRuntimeShell } from './Match3DRuntimeShell';
 
-vi.mock('./Match3DPhysicsBoard', () => ({
-  Match3DPhysicsBoard: ({ onFallback }: { onFallback: () => void }) => {
-    useEffect(() => {
-      onFallback();
-    }, [onFallback]);
-    return <div data-testid="match3d-physics-board-fallback" />;
-  },
-}));
+vi.mock('./Match3DPhysicsBoard', async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import('./Match3DPhysicsBoard')>();
+  return {
+    ...actual,
+    Match3DPhysicsBoard: ({ onFallback }: { onFallback: () => void }) => {
+      useEffect(() => {
+        const shouldKeep3D =
+          (
+            globalThis as typeof globalThis & {
+              __MATCH3D_KEEP_3D_TEST_RENDER__?: boolean;
+            }
+          ).__MATCH3D_KEEP_3D_TEST_RENDER__ === true;
+        if (!shouldKeep3D) {
+          onFallback();
+        }
+      }, [onFallback]);
+      return <div data-testid="match3d-physics-board-fallback" />;
+    },
+  };
+});
+
+afterEach(() => {
+  delete (
+    globalThis as typeof globalThis & {
+      __MATCH3D_KEEP_3D_TEST_RENDER__?: boolean;
+    }
+  ).__MATCH3D_KEEP_3D_TEST_RENDER__;
+});
 
 function renderRuntime(run: Match3DRunSnapshot) {
   let currentRun = run;
@@ -79,13 +105,204 @@ test('点击可见物品后先乐观入槽再等待确认', async () => {
   await waitFor(() => expect(onClickItem).toHaveBeenCalledTimes(1));
 });
 
-test('后端形状视觉键不会被统一兜底成红色苹字', () => {
+test('3D 模式下备选栏使用共享模型预览层，避免挤占中心棋盘上下文', () => {
+  (
+    globalThis as typeof globalThis & {
+      __MATCH3D_KEEP_3D_TEST_RENDER__?: boolean;
+    }
+  ).__MATCH3D_KEEP_3D_TEST_RENDER__ = true;
+  const run = startLocalMatch3DRun(1);
+  const selectedItem = run.items[0]!;
+  const nextRun: Match3DRunSnapshot = {
+    ...run,
+    items: run.items.map((item, index) =>
+      index === 0
+        ? {
+            ...item,
+            state: 'InTray' as const,
+            clickable: false,
+            traySlotIndex: 0,
+          }
+        : item,
+    ),
+    traySlots: run.traySlots.map((slot) =>
+      slot.slotIndex === 0
+        ? {
+            slotIndex: 0,
+            itemInstanceId: selectedItem.itemInstanceId,
+            itemTypeId: selectedItem.itemTypeId,
+            visualKey: selectedItem.visualKey,
+          }
+        : slot,
+    ),
+  };
+
+  renderRuntime(nextRun);
+
+  expect(screen.getByTestId('match3d-tray-model-board')).toBeTruthy();
+});
+
+test('本地试玩按消除次数生成类型并在 25 类封顶', () => {
+  const smallRun = startLocalMatch3DRun(12);
+  const largeRun = startLocalMatch3DRun(100);
+  const countTypes = (run: Match3DRunSnapshot) =>
+    new Set(run.items.map((item) => item.itemTypeId)).size;
+
+  expect(countTypes(smallRun)).toBe(12);
+  expect(countTypes(largeRun)).toBe(25);
+  expect(largeRun.items).toHaveLength(300);
+});
+
+test('25 次以内生成不重复积木视觉签名', () => {
+  const run = startLocalMatch3DRun(25);
+  const firstItemByType = new Map(
+    run.items.map((item) => [item.itemTypeId, item]),
+  );
+  const visualKeys = new Set(
+    [...firstItemByType.values()].map((item) => item.visualKey),
+  );
+  const signatures = new Set(
+    [...firstItemByType.values()].map(
+      (item) => {
+        const asset = resolveGeometryAsset(item.visualKey);
+        return `${asset.shape}-${asset.fill}-${asset.studsX}x${asset.studsY}-${asset.heightScale}`;
+      },
+    ),
+  );
+
+  expect(firstItemByType.size).toBe(25);
+  expect(visualKeys.size).toBe(25);
+  expect(signatures.size).toBe(25);
+});
+
+test('积木池覆盖参考图里的特殊件', () => {
+  const shapes = new Set(
+    startLocalMatch3DRun(25).items.map((item) =>
+      resolveGeometryAsset(item.visualKey).shape,
+    ),
+  );
+
+  expect(shapes).toContain('brick');
+  expect(shapes).toContain('tile');
+  expect(shapes).toContain('slope');
+  expect(shapes).toContain('cylinder');
+  expect(shapes).toContain('ring');
+  expect(shapes).toContain('arch');
+  expect(shapes).toContain('cone');
+});
+
+test('3D 特殊积木件使用可辨认挤出轮廓而不是基础代理体', async () => {
+  const three = await import('three');
+
+  for (const shape of MATCH3D_EXTRUDED_READABLE_SHAPES) {
+    const geometry = createMatch3DThreeGeometry(three, shape, 1);
+
+    expect(geometry.type).toBe('ExtrudeGeometry');
+  }
+});
+
+test('15 次消除时每种视觉模型只对应一次消除目标', () => {
+  const run = startLocalMatch3DRun(15);
+  const countByVisualKey = new Map<string, number>();
+  const typeByVisualKey = new Map<string, Set<string>>();
+
+  for (const item of run.items) {
+    countByVisualKey.set(
+      item.visualKey,
+      (countByVisualKey.get(item.visualKey) ?? 0) + 1,
+    );
+    typeByVisualKey.set(item.visualKey, typeByVisualKey.get(item.visualKey) ?? new Set());
+    typeByVisualKey.get(item.visualKey)!.add(item.itemTypeId);
+  }
+
+  expect(countByVisualKey.size).toBe(15);
+  expect([...countByVisualKey.values()]).toEqual(Array(15).fill(3));
+  expect(
+    [...typeByVisualKey.values()].every((itemTypeIds) => itemTypeIds.size === 1),
+  ).toBe(true);
+});
+
+test('25 次以内的随机抽取不会刷新重复物品', () => {
+  for (const clearCount of [1, 12, 15, 24, 25]) {
+    const run = startLocalMatch3DRun(clearCount);
+    const visualKeys = new Set(run.items.map((item) => item.visualKey));
+
+    expect(visualKeys.size).toBe(clearCount);
+  }
+});
+
+test('25 类型局面按五档体积比例生成尺寸', () => {
+  const run = startLocalMatch3DRun(25);
+  const radiusByVisualKey = new Map<string, number>();
+  for (const item of run.items) {
+    radiusByVisualKey.set(item.visualKey, item.radius);
+  }
+
+  const baseRadius = [...radiusByVisualKey.values()].find(
+    (radius) => Math.abs(radius / 0.072 - 1) < 0.01,
+  );
+  expect(baseRadius).toBeTruthy();
+
+  const tierCounts = new Map<string, number>();
+  for (const radius of radiusByVisualKey.values()) {
+    const relativeVolume = Math.pow(radius / baseRadius!, 3);
+    const tier =
+      relativeVolume >= 1.6
+        ? 'XL'
+        : relativeVolume >= 1.25
+          ? 'L'
+          : relativeVolume >= 0.65 && relativeVolume <= 0.85
+            ? 'XS'
+            : relativeVolume <= 0.5
+              ? 'S'
+              : 'M';
+    tierCounts.set(tier, (tierCounts.get(tier) ?? 0) + 1);
+  }
+
+  expect(tierCounts.get('XL')).toBe(5);
+  expect(tierCounts.get('L')).toBe(8);
+  expect(tierCounts.get('M')).toBe(7);
+  expect(tierCounts.get('XS')).toBe(4);
+  expect(tierCounts.get('S')).toBe(1);
+});
+
+test('同一视觉模型在复用时保持唯一尺寸', () => {
+  const run = startLocalMatch3DRun(30);
+  const radiiByVisualKey = new Map<string, Set<number>>();
+
+  for (const item of run.items) {
+    const radii = radiiByVisualKey.get(item.visualKey) ?? new Set<number>();
+    radii.add(Math.round(item.radius * 10_000));
+    radiiByVisualKey.set(item.visualKey, radii);
+  }
+
+  expect(radiiByVisualKey.size).toBe(25);
+  expect([...radiiByVisualKey.values()].every((radii) => radii.size === 1)).toBe(true);
+});
+
+test('积木 3D 资源可以为本局类型创建几何体', async () => {
+  const three = await import('three');
+  const run = startLocalMatch3DRun(15);
+  const firstItemByType = new Map(
+    run.items.map((item) => [item.itemTypeId, item]),
+  );
+
+  expect(firstItemByType.size).toBe(15);
+  for (const item of firstItemByType.values()) {
+    const shape = resolveGeometryAsset(item.visualKey).shape;
+    const geometry = createMatch3DThreeGeometry(three, shape, 1);
+
+    expect(geometry).toBeTruthy();
+  }
+});
+
+test('积木视觉键不会被统一兜底成红色苹字', () => {
   const run = startLocalMatch3DRun(2);
   run.items = run.items.slice(0, 2).map((item, index) => ({
     ...item,
-    itemInstanceId: `shape-${index}`,
-    itemTypeId: `shape-type-${index}`,
-    visualKey: index === 0 ? 'red_circle' : 'yellow_triangle',
+    itemInstanceId: `block-${index}`,
+    itemTypeId: `block-type-${index}`,
+    visualKey: index === 0 ? 'block-red-2x4' : 'block-blue-1x2',
     x: 0.42 + index * 0.16,
     y: 0.5,
     layer: index,
@@ -93,23 +310,23 @@ test('后端形状视觉键不会被统一兜底成红色苹字', () => {
   }));
   renderRuntime(run);
 
-  expect(screen.getByTestId('match3d-visual-red_circle')).toBeTruthy();
-  expect(screen.getByTestId('match3d-visual-yellow_triangle')).toBeTruthy();
+  expect(screen.getByTestId('match3d-visual-block-red-2x4')).toBeTruthy();
+  expect(screen.getByTestId('match3d-visual-block-blue-1x2')).toBeTruthy();
   expect(screen.queryAllByText('苹')).toHaveLength(0);
 });
 
-test('水果题材视觉键也渲染为无文字纯色几何体', () => {
+test('积木视觉键渲染为无文字纯色图标', () => {
   const run = startLocalMatch3DRun(3);
   run.items = run.items.slice(0, 3).map((item, index) => ({
     ...item,
-    itemInstanceId: `fruit-${index}`,
-    itemTypeId: `fruit-type-${index}`,
+    itemInstanceId: `block-icon-${index}`,
+    itemTypeId: `block-icon-type-${index}`,
     visualKey:
       index === 0
-        ? 'watermelon-green'
+        ? 'block-red-2x4'
         : index === 1
-          ? 'apple-red'
-          : 'grape-purple',
+          ? 'block-clear-ring'
+          : 'block-mint-arch',
     x: 0.35 + index * 0.15,
     y: 0.5,
     radius: index === 0 ? 0.12 : index === 1 ? 0.09 : 0.07,
@@ -118,31 +335,31 @@ test('水果题材视觉键也渲染为无文字纯色几何体', () => {
   }));
   renderRuntime(run);
 
-  expect(screen.getByTestId('match3d-visual-watermelon-green')).toBeTruthy();
+  expect(screen.getByTestId('match3d-visual-block-red-2x4')).toBeTruthy();
   expect(
-    screen.getByTestId('match3d-visual-apple-red').getAttribute('data-shape'),
-  ).toBe('heart');
+    screen.getByTestId('match3d-visual-block-clear-ring').getAttribute('data-shape'),
+  ).toBe('ring');
   expect(
     screen
-      .getByTestId('match3d-visual-grape-purple')
+      .getByTestId('match3d-visual-block-mint-arch')
       .getAttribute('data-shape'),
-  ).toBe('star');
+  ).toBe('arch');
   expect(screen.queryByText('苹果')).toBeNull();
   expect(screen.queryByText('苹')).toBeNull();
 });
 
-test('运行态支持梯形和平行四边形等差异化几何造型', () => {
+test('运行态支持长条、斜坡和圆柱等差异化积木造型', () => {
   const run = startLocalMatch3DRun(3);
   run.items = run.items.slice(0, 3).map((item, index) => ({
     ...item,
-    itemInstanceId: `geometry-${index}`,
-    itemTypeId: `geometry-type-${index}`,
+    itemInstanceId: `block-geometry-${index}`,
+    itemTypeId: `block-geometry-type-${index}`,
     visualKey:
       index === 0
-        ? 'peach-pink'
+        ? 'block-black-1x8'
         : index === 1
-          ? 'banana-yellow'
-          : 'orange_hexagon',
+          ? 'block-purple-slope-1x2'
+          : 'block-green-cylinder',
     x: 0.35 + index * 0.15,
     y: 0.5,
     layer: index,
@@ -151,18 +368,18 @@ test('运行态支持梯形和平行四边形等差异化几何造型', () => {
   renderRuntime(run);
 
   expect(
-    screen.getByTestId('match3d-visual-peach-pink').getAttribute('data-shape'),
-  ).toBe('trapezoid');
+    screen.getByTestId('match3d-visual-block-black-1x8').getAttribute('data-shape'),
+  ).toBe('brick');
   expect(
     screen
-      .getByTestId('match3d-visual-banana-yellow')
+      .getByTestId('match3d-visual-block-purple-slope-1x2')
       .getAttribute('data-shape'),
-  ).toBe('parallelogram');
+  ).toBe('slope');
   expect(
     screen
-      .getByTestId('match3d-visual-orange_hexagon')
+      .getByTestId('match3d-visual-block-green-cylinder')
       .getAttribute('data-shape'),
-  ).toBe('hexagon');
+  ).toBe('cylinder');
 });
 
 test('异常旧坐标只做显示层收束，不让物品贴出圆形空间', () => {
@@ -172,7 +389,7 @@ test('异常旧坐标只做显示层收束，不让物品贴出圆形空间', ()
     {
       ...item,
       itemInstanceId: 'legacy-outside',
-      visualKey: 'apple-red',
+      visualKey: 'block-red-2x4',
       x: -0.4,
       y: 0.5,
       radius: 0.1,
diff --git a/src/components/match3d-runtime/Match3DRuntimeShell.tsx b/src/components/match3d-runtime/Match3DRuntimeShell.tsx
index c7c9972d..99dbe30f 100644
--- a/src/components/match3d-runtime/Match3DRuntimeShell.tsx
+++ b/src/components/match3d-runtime/Match3DRuntimeShell.tsx
@@ -19,7 +19,10 @@ import {
   Match3DVisualIcon,
   resolveVisualSeed,
 } from './match3dVisualAssets';
-import { Match3DPhysicsBoard } from './Match3DPhysicsBoard';
+import {
+  Match3DPhysicsBoard,
+  Match3DTrayPreviewBoard,
+} from './Match3DPhysicsBoard';
 import {
   isItemState,
   isRunState,
@@ -178,19 +181,28 @@ function Match3DToken({
   );
 }
 
-function Match3DTrayToken({ slot }: { slot: Match3DTraySlot }) {
+function Match3DTrayToken({
+  slot,
+  use3DPreview,
+}: {
+  slot: Match3DTraySlot;
+  use3DPreview: boolean;
+}) {
   if (!slot.visualKey) {
     return (
       <span className="h-full w-full rounded-xl border border-dashed border-slate-300/35 bg-white/8" />
     );
   }
   const visualSeed = resolveVisualSeed(slot.visualKey);
+  const fallback = <Match3DVisualIcon visualKey={slot.visualKey} />;
   return (
     <span
       className="flex h-full w-full items-center justify-center p-1"
       aria-label={visualSeed.label}
     >
-      <Match3DVisualIcon visualKey={slot.visualKey} />
+      <span className={use3DPreview ? 'opacity-0' : 'opacity-100'}>
+        {fallback}
+      </span>
     </span>
   );
 }
@@ -321,6 +333,18 @@ export function Match3DRuntimeShell({
   }, [run]);
 
   const shouldUse3DRender = !force2DRender;
+  const trayPreviewItems = useMemo(() => {
+    if (!run) {
+      return [];
+    }
+    return run.traySlots.map((slot) =>
+      slot.itemInstanceId
+        ? (run.items.find(
+            (item) => item.itemInstanceId === slot.itemInstanceId,
+          ) ?? null)
+        : null,
+    );
+  }, [run]);
 
   const handleItemClick = async (item: Match3DItemSnapshot) => {
     if (!run || !isRunState(run.status, 'running') || pendingClick) {
@@ -436,7 +460,9 @@ export function Match3DRuntimeShell({
         <section className="relative mt-3 flex flex-1 min-h-0 items-center justify-center">
           <div
             ref={stageRef}
-            className="relative aspect-square max-w-full overflow-hidden rounded-full border-[10px] border-[#e6d19b] bg-[radial-gradient(circle_at_50%_42%,#f2d993_0%,#c88f43_56%,#835223_100%)] shadow-[inset_0_8px_34px_rgba(72,41,16,0.34),0_22px_42px_rgba(15,23,42,0.28)]"
+            className={`relative aspect-square max-w-full rounded-full border-[10px] border-[#e6d19b] bg-[radial-gradient(circle_at_50%_42%,#f2d993_0%,#c88f43_56%,#835223_100%)] shadow-[inset_0_8px_34px_rgba(72,41,16,0.34),0_22px_42px_rgba(15,23,42,0.28)] ${
+              shouldUse3DRender ? 'overflow-visible' : 'overflow-hidden'
+            }`}
             style={{
               width: 'min(92vw, 58dvh, 100%)',
             }}
@@ -474,16 +500,27 @@ export function Match3DRuntimeShell({
         </section>
 
         <section className="mt-3 w-full min-w-0 overflow-hidden rounded-[1.35rem] border border-white/14 bg-black/24 p-2 shadow-[0_16px_36px_rgba(15,23,42,0.24)] backdrop-blur">
-          <div className="grid grid-cols-7 gap-1.5" data-testid="match3d-tray">
-            {run.traySlots.map((slot) => (
-              <div
-                key={slot.slotIndex}
-                className="aspect-square min-w-0 rounded-xl bg-white/10 p-1"
-                data-testid="match3d-tray-slot"
-              >
-                <Match3DTrayToken slot={slot} />
-              </div>
-            ))}
+          <div
+            className="relative grid grid-cols-7 gap-1.5"
+            data-testid="match3d-tray"
+          >
+            {shouldUse3DRender ? (
+              <Match3DTrayPreviewBoard slotItems={trayPreviewItems} />
+            ) : null}
+            {run.traySlots.map((slot) => {
+              return (
+                <div
+                  key={slot.slotIndex}
+                  className="relative z-0 aspect-square min-w-0 rounded-xl bg-white/10 p-1"
+                  data-testid="match3d-tray-slot"
+                >
+                  <Match3DTrayToken
+                    slot={slot}
+                    use3DPreview={shouldUse3DRender}
+                  />
+                </div>
+              );
+            })}
           </div>
         </section>
       </div>
diff --git a/src/components/match3d-runtime/match3dVisualAssets.tsx b/src/components/match3d-runtime/match3dVisualAssets.tsx
index 35773f46..c93990d9 100644
--- a/src/components/match3d-runtime/match3dVisualAssets.tsx
+++ b/src/components/match3d-runtime/match3dVisualAssets.tsx
@@ -2,139 +2,63 @@ import { MATCH3D_VISUAL_SEEDS } from '../../services/match3d-runtime';
 
 type Match3DVisualSeed = (typeof MATCH3D_VISUAL_SEEDS)[number];
 
-export type Match3DGeometryShape =
-  | 'circle'
-  | 'triangle'
-  | 'diamond'
-  | 'square'
-  | 'star'
-  | 'hexagon'
-  | 'capsule'
-  | 'heart'
-  | 'trapezoid'
-  | 'parallelogram';
+export type Match3DBlockShape =
+  | 'brick'
+  | 'tile'
+  | 'slope'
+  | 'cylinder'
+  | 'ring'
+  | 'arch'
+  | 'cone';
+
+export type Match3DGeometryShape = Match3DBlockShape;
 
 export type Match3DGeometryAsset = {
-  shape: Match3DGeometryShape;
+  shape: Match3DBlockShape;
   fill: string;
   stroke: string;
+  studsX: number;
+  studsY: number;
+  heightScale: number;
+  transparent?: boolean;
 };
 
 const MATCH3D_GEOMETRY_ASSETS: Record<string, Match3DGeometryAsset> = {
-  'watermelon-green': {
-    shape: 'circle',
-    fill: '#16a34a',
-    stroke: '#14532d',
-  },
-  'apple-red': {
-    shape: 'heart',
-    fill: '#ef4444',
-    stroke: '#991b1b',
-  },
-  'banana-yellow': {
-    shape: 'parallelogram',
-    fill: '#facc15',
-    stroke: '#a16207',
-  },
-  'grape-purple': {
-    shape: 'star',
-    fill: '#8b5cf6',
-    stroke: '#5b21b6',
-  },
-  'melon-green': {
-    shape: 'hexagon',
-    fill: '#84cc16',
-    stroke: '#3f6212',
-  },
-  'berry-blue': {
-    shape: 'diamond',
-    fill: '#2563eb',
-    stroke: '#1e3a8a',
-  },
-  'peach-pink': {
-    shape: 'trapezoid',
-    fill: '#fb7185',
-    stroke: '#be123c',
-  },
-  'plum-indigo': {
-    shape: 'capsule',
-    fill: '#4f46e5',
-    stroke: '#312e81',
-  },
-  'lime-lime': {
-    shape: 'square',
-    fill: '#65a30d',
-    stroke: '#365314',
-  },
-  'orange-orange': {
-    shape: 'triangle',
-    fill: '#f97316',
-    stroke: '#9a3412',
-  },
-  'pear-cyan': {
-    shape: 'parallelogram',
-    fill: '#06b6d4',
-    stroke: '#155e75',
-  },
-  red_circle: {
-    shape: 'circle',
-    fill: '#ef4444',
-    stroke: '#991b1b',
-  },
-  yellow_triangle: {
-    shape: 'triangle',
-    fill: '#facc15',
-    stroke: '#a16207',
-  },
-  purple_diamond: {
-    shape: 'diamond',
-    fill: '#7c3aed',
-    stroke: '#4c1d95',
-  },
-  green_square: {
-    shape: 'square',
-    fill: '#16a34a',
-    stroke: '#14532d',
-  },
-  blue_star: {
-    shape: 'star',
-    fill: '#0ea5e9',
-    stroke: '#075985',
-  },
-  orange_hexagon: {
-    shape: 'hexagon',
-    fill: '#f97316',
-    stroke: '#9a3412',
-  },
-  cyan_capsule: {
-    shape: 'capsule',
-    fill: '#06b6d4',
-    stroke: '#155e75',
-  },
-  pink_heart: {
-    shape: 'heart',
-    fill: '#ec4899',
-    stroke: '#9d174d',
-  },
-  lime_leaf: {
-    shape: 'trapezoid',
-    fill: '#84cc16',
-    stroke: '#3f6212',
-  },
-  white_moon: {
-    shape: 'parallelogram',
-    fill: '#e2e8f0',
-    stroke: '#64748b',
+  'block-red-2x4': blockAsset('brick', '#e31818', '#8f1111', 4, 2, 0.72),
+  'block-blue-1x2': blockAsset('brick', '#1478d4', '#0b4f91', 2, 1, 0.82),
+  'block-yellow-2x2': blockAsset('brick', '#f7c51d', '#a66f00', 2, 2, 0.76),
+  'block-green-1x4': blockAsset('brick', '#079447', '#055c2f', 4, 1, 0.72),
+  'block-orange-1x6': blockAsset('brick', '#ff7a12', '#b84708', 6, 1, 0.64),
+  'block-white-1x1': blockAsset('brick', '#f3f2ec', '#b7b8b2', 1, 1, 0.86),
+  'block-black-1x8': blockAsset('brick', '#101214', '#030405', 8, 1, 0.54),
+  'block-tan-2x3': blockAsset('brick', '#d8bd72', '#9b7a35', 3, 2, 0.68),
+  'block-lime-1x2': blockAsset('brick', '#a5df18', '#6d990b', 2, 1, 0.58),
+  'block-darkred-2x2': blockAsset('brick', '#b51217', '#76090d', 2, 2, 0.7),
+  'block-blue-1x4': blockAsset('brick', '#1688df', '#0b5c9e', 4, 1, 0.58),
+  'block-pink-2x4': blockAsset('brick', '#f66bb5', '#ba2e7e', 4, 2, 0.56),
+  'block-gray-1x6': blockAsset('brick', '#4c5456', '#232829', 6, 1, 0.5),
+  'block-lavender-tile-2x2': blockAsset('tile', '#c99fe6', '#8b63ad', 2, 2, 0.28),
+  'block-teal-tile-1x3': blockAsset('tile', '#11adb0', '#087377', 3, 1, 0.26),
+  'block-mint-tile-1x4': blockAsset('tile', '#a7c6ac', '#6e9275', 4, 1, 0.24),
+  'block-magenta-tile-2x2': blockAsset('tile', '#cf0f68', '#8e0644', 2, 2, 0.28),
+  'block-orange-tile-2x2-stud': blockAsset('tile', '#ff970f', '#b65b05', 2, 2, 0.3),
+  'block-purple-slope-1x2': blockAsset('slope', '#5e42b6', '#342070', 2, 1, 0.82),
+  'block-brown-slope-1x2': blockAsset('slope', '#8b421f', '#552414', 2, 1, 0.94),
+  'block-sky-slope-2x2': blockAsset('slope', '#4db3f2', '#1f78b7', 2, 2, 0.9),
+  'block-green-cylinder': blockAsset('cylinder', '#159554', '#076236', 1, 1, 1.08),
+  'block-clear-ring': {
+    ...blockAsset('ring', '#d9e1df', '#aebbbb', 2, 2, 0.38),
+    transparent: true,
   },
+  'block-mint-arch': blockAsset('arch', '#c4ded2', '#83a996', 4, 1, 1.0),
+  'block-gold-cone': blockAsset('cone', '#d39a10', '#8c6105', 1, 1, 1.18),
 };
 
 const MATCH3D_UNKNOWN_GEOMETRY_ASSETS: Match3DGeometryAsset[] = [
-  { shape: 'circle', fill: '#f43f5e', stroke: '#9f1239' },
-  { shape: 'triangle', fill: '#f59e0b', stroke: '#92400e' },
-  { shape: 'diamond', fill: '#8b5cf6', stroke: '#5b21b6' },
-  { shape: 'star', fill: '#10b981', stroke: '#065f46' },
-  { shape: 'trapezoid', fill: '#0ea5e9', stroke: '#075985' },
-  { shape: 'parallelogram', fill: '#14b8a6', stroke: '#115e59' },
+  blockAsset('brick', '#e11d48', '#9f1239', 2, 2, 0.68),
+  blockAsset('tile', '#f59e0b', '#92400e', 3, 1, 0.28),
+  blockAsset('slope', '#8b5cf6', '#5b21b6', 2, 1, 0.86),
+  blockAsset('cylinder', '#10b981', '#065f46', 1, 1, 1.0),
 ];
 
 const MATCH3D_UNKNOWN_VISUAL_SEEDS: Match3DVisualSeed[] = [
@@ -162,14 +86,26 @@ const MATCH3D_UNKNOWN_VISUAL_SEEDS: Match3DVisualSeed[] = [
     colorClassName: 'from-emerald-300 to-green-600',
     label: '四',
   },
-  {
-    itemTypeId: 'unknown-sky',
-    visualKey: 'unknown-sky',
-    colorClassName: 'from-sky-300 to-blue-600',
-    label: '五',
-  },
 ];
 
+function blockAsset(
+  shape: Match3DBlockShape,
+  fill: string,
+  stroke: string,
+  studsX: number,
+  studsY: number,
+  heightScale: number,
+): Match3DGeometryAsset {
+  return {
+    shape,
+    fill,
+    stroke,
+    studsX,
+    studsY,
+    heightScale,
+  };
+}
+
 export function hashVisualKey(visualKey: string) {
   let hash = 0;
   for (const char of visualKey) {
@@ -199,48 +135,80 @@ export function resolveGeometryAsset(visualKey: string): Match3DGeometryAsset {
   );
 }
 
-function renderGeometryShape(asset: Match3DGeometryAsset) {
+function renderBlockIcon(asset: Match3DGeometryAsset) {
   const shapeProps = {
     fill: asset.fill,
     stroke: asset.stroke,
-    strokeWidth: 6,
+    strokeWidth: 5,
     strokeLinejoin: 'round' as const,
+    opacity: asset.transparent ? 0.72 : 1,
   };
 
-  switch (asset.shape) {
-    case 'circle':
-      return <circle cx="50" cy="50" r="36" {...shapeProps} />;
-    case 'triangle':
-      return <path d="M50 12 L89 84 H11Z" {...shapeProps} />;
-    case 'diamond':
-      return <path d="M50 9 L91 50 L50 91 L9 50Z" {...shapeProps} />;
-    case 'square':
-      return <rect x="16" y="16" width="68" height="68" rx="8" {...shapeProps} />;
-    case 'star':
-      return (
-        <path
-          d="M50 8 L61 36 L91 38 L68 58 L76 88 L50 72 L24 88 L32 58 L9 38 L39 36Z"
-          {...shapeProps}
-        />
-      );
-    case 'hexagon':
-      return <path d="M28 12 H72 L94 50 L72 88 H28 L6 50Z" {...shapeProps} />;
-    case 'capsule':
-      return <rect x="10" y="28" width="80" height="44" rx="22" {...shapeProps} />;
-    case 'heart':
-      return (
-        <path
-          d="M50 86 C25 66 13 52 17 34 C20 18 40 16 50 31 C60 16 80 18 83 34 C87 52 75 66 50 86Z"
-          {...shapeProps}
-        />
-      );
-    case 'trapezoid':
-      return <path d="M27 18 H73 L90 82 H10Z" {...shapeProps} />;
-    case 'parallelogram':
-      return <path d="M34 16 H88 L66 84 H12Z" {...shapeProps} />;
-    default:
-      return <circle cx="50" cy="50" r="36" {...shapeProps} />;
+  if (asset.shape === 'cylinder') {
+    return (
+      <>
+        <rect x="34" y="22" width="32" height="56" rx="12" {...shapeProps} />
+        <ellipse cx="50" cy="24" rx="16" ry="8" fill={asset.fill} stroke={asset.stroke} strokeWidth={5} />
+      </>
+    );
   }
+
+  if (asset.shape === 'ring') {
+    return (
+      <>
+        <ellipse cx="50" cy="50" rx="34" ry="24" {...shapeProps} />
+        <ellipse cx="50" cy="50" rx="17" ry="11" fill="rgba(255,255,255,0.88)" stroke={asset.stroke} strokeWidth={5} />
+      </>
+    );
+  }
+
+  if (asset.shape === 'arch') {
+    return (
+      <path
+        d="M14 78 V28 H86 V78 H66 V46 C66 34 58 27 50 27 C42 27 34 34 34 46 V78Z"
+        {...shapeProps}
+      />
+    );
+  }
+
+  if (asset.shape === 'cone') {
+    return (
+      <path d="M50 12 C66 28 78 62 78 82 H22 C22 62 34 28 50 12Z" {...shapeProps} />
+    );
+  }
+
+  if (asset.shape === 'slope') {
+    return <path d="M16 76 L84 76 L84 30 L16 60Z" {...shapeProps} />;
+  }
+
+  const width = Math.min(76, 16 + asset.studsX * 14);
+  const height = Math.min(54, 18 + asset.studsY * 13);
+  const x = 50 - width / 2;
+  const y = 54 - height / 2;
+  const studRadius = asset.shape === 'tile' ? 0 : 5;
+  return (
+    <>
+      <rect x={x} y={y} width={width} height={height} rx="7" {...shapeProps} />
+      {Array.from({ length: asset.studsX * asset.studsY }, (_, index) => {
+        if (studRadius <= 0) {
+          return null;
+        }
+        const column = index % asset.studsX;
+        const row = Math.floor(index / asset.studsX);
+        return (
+          <circle
+            key={index}
+            cx={x + ((column + 0.5) * width) / asset.studsX}
+            cy={y + ((row + 0.5) * height) / asset.studsY}
+            r={studRadius}
+            fill={asset.fill}
+            stroke={asset.stroke}
+            strokeWidth={3}
+          />
+        );
+      })}
+    </>
+  );
 }
 
 export function Match3DVisualIcon({
@@ -261,7 +229,7 @@ export function Match3DVisualIcon({
       data-testid={`match3d-visual-${visualKey}`}
       data-shape={asset.shape}
     >
-      {renderGeometryShape(asset)}
+      {renderBlockIcon(asset)}
     </svg>
   );
 }
diff --git a/src/services/match3d-runtime/match3dLocalRuntime.ts b/src/services/match3d-runtime/match3dLocalRuntime.ts
index bbe3efd1..18d2e088 100644
--- a/src/services/match3d-runtime/match3dLocalRuntime.ts
+++ b/src/services/match3d-runtime/match3dLocalRuntime.ts
@@ -8,156 +8,237 @@ import type {
 
 const MATCH3D_TRAY_SLOT_COUNT = 7;
 const MATCH3D_LOCAL_DURATION_MS = 600_000;
+const MATCH3D_MAX_ITEM_TYPE_COUNT = 25;
+const MATCH3D_LOCAL_BASE_RADIUS = 0.072;
+
+type Match3DSizeTier = 'XL' | 'L' | 'M' | 'XS' | 'S';
 
 type Match3DVisualSeed = {
   itemTypeId: string;
   visualKey: string;
   colorClassName: string;
   label: string;
-  sizeScale?: number;
 };
 
+type Match3DSelectedVisualSeed = Match3DVisualSeed & {
+  radiusScale: number;
+  relativeVolume: number;
+  sizeTier: Match3DSizeTier;
+};
+
+const MATCH3D_SIZE_TIER_RULES: Array<{
+  radiusScale: number;
+  ratio: number;
+  relativeVolume: number;
+  sizeTier: Match3DSizeTier;
+}> = [
+  { sizeTier: 'XL', ratio: 0.2, relativeVolume: 1.86, radiusScale: 1.23 },
+  { sizeTier: 'L', ratio: 0.3, relativeVolume: 1.4, radiusScale: 1.12 },
+  { sizeTier: 'M', ratio: 0.3, relativeVolume: 1, radiusScale: 1 },
+  { sizeTier: 'XS', ratio: 0.15, relativeVolume: 0.73, radiusScale: 0.9 },
+  { sizeTier: 'S', ratio: 0.05, relativeVolume: 0.44, radiusScale: 0.76 },
+];
+
 export const MATCH3D_VISUAL_SEEDS: Match3DVisualSeed[] = [
-  // 中文注释：水果题材内置视觉键要和后端 module-match3d 保持一致，避免不同物品被兜底成同一图案。
+  // 中文注释：默认 25 类使用参考图中的积木件，形状、尺寸和颜色都要能区分。
   {
-    itemTypeId: 'watermelon',
-    visualKey: 'watermelon-green',
-    colorClassName: 'from-emerald-500 to-green-800',
-    label: '西瓜',
-    sizeScale: 1.24,
+    itemTypeId: 'block-red-2x4',
+    visualKey: 'block-red-2x4',
+    colorClassName: 'from-rose-400 to-red-700',
+    label: '红色二乘四',
   },
   {
-    itemTypeId: 'apple',
-    visualKey: 'apple-red',
-    colorClassName: 'from-rose-400 to-red-600',
-    label: '苹果',
-    sizeScale: 1,
+    itemTypeId: 'block-blue-1x2',
+    visualKey: 'block-blue-1x2',
+    colorClassName: 'from-blue-300 to-blue-700',
+    label: '蓝色一乘二',
   },
   {
-    itemTypeId: 'banana',
-    visualKey: 'banana-yellow',
-    colorClassName: 'from-yellow-300 to-amber-500',
-    label: '香蕉',
-    sizeScale: 1.04,
+    itemTypeId: 'block-yellow-2x2',
+    visualKey: 'block-yellow-2x2',
+    colorClassName: 'from-yellow-300 to-yellow-600',
+    label: '黄色二乘二',
   },
   {
-    itemTypeId: 'grape',
-    visualKey: 'grape-purple',
-    colorClassName: 'from-violet-400 to-purple-700',
-    label: '葡萄',
-    sizeScale: 0.78,
+    itemTypeId: 'block-green-1x4',
+    visualKey: 'block-green-1x4',
+    colorClassName: 'from-emerald-300 to-green-700',
+    label: '绿色一乘四',
   },
   {
-    itemTypeId: 'melon',
-    visualKey: 'melon-green',
-    colorClassName: 'from-emerald-300 to-green-600',
-    label: '甜瓜',
-    sizeScale: 1.12,
+    itemTypeId: 'block-orange-1x6',
+    visualKey: 'block-orange-1x6',
+    colorClassName: 'from-orange-300 to-orange-700',
+    label: '橙色一乘六',
   },
   {
-    itemTypeId: 'berry',
-    visualKey: 'berry-blue',
-    colorClassName: 'from-sky-300 to-blue-600',
-    label: '蓝莓',
-    sizeScale: 0.78,
+    itemTypeId: 'block-white-1x1',
+    visualKey: 'block-white-1x1',
+    colorClassName: 'from-slate-50 to-slate-300',
+    label: '白色一乘一',
   },
   {
-    itemTypeId: 'peach',
-    visualKey: 'peach-pink',
-    colorClassName: 'from-pink-300 to-orange-400',
-    label: '桃子',
-    sizeScale: 1,
+    itemTypeId: 'block-black-1x8',
+    visualKey: 'block-black-1x8',
+    colorClassName: 'from-zinc-700 to-black',
+    label: '黑色一乘八',
   },
   {
-    itemTypeId: 'plum',
-    visualKey: 'plum-indigo',
-    colorClassName: 'from-indigo-300 to-indigo-700',
-    label: '李子',
-    sizeScale: 0.86,
+    itemTypeId: 'block-tan-2x3',
+    visualKey: 'block-tan-2x3',
+    colorClassName: 'from-amber-100 to-yellow-600',
+    label: '米色二乘三',
   },
   {
-    itemTypeId: 'lime',
-    visualKey: 'lime-lime',
-    colorClassName: 'from-lime-300 to-lime-600',
-    label: '青柠',
-    sizeScale: 0.86,
+    itemTypeId: 'block-lime-1x2',
+    visualKey: 'block-lime-1x2',
+    colorClassName: 'from-lime-300 to-lime-700',
+    label: '青柠一乘二',
   },
   {
-    itemTypeId: 'orange',
-    visualKey: 'orange-orange',
-    colorClassName: 'from-orange-300 to-orange-600',
-    label: '橙子',
-    sizeScale: 1,
+    itemTypeId: 'block-darkred-2x2',
+    visualKey: 'block-darkred-2x2',
+    colorClassName: 'from-red-700 to-red-950',
+    label: '深红二乘二',
   },
   {
-    itemTypeId: 'pear',
-    visualKey: 'pear-cyan',
-    colorClassName: 'from-cyan-300 to-teal-600',
-    label: '梨',
-    sizeScale: 1,
+    itemTypeId: 'block-blue-1x4',
+    visualKey: 'block-blue-1x4',
+    colorClassName: 'from-sky-300 to-blue-700',
+    label: '蓝色一乘四',
   },
   {
-    itemTypeId: 'red-circle',
-    visualKey: 'red_circle',
-    colorClassName: 'from-rose-400 to-red-600',
-    label: '圆',
+    itemTypeId: 'block-pink-2x4',
+    visualKey: 'block-pink-2x4',
+    colorClassName: 'from-pink-300 to-pink-600',
+    label: '粉色二乘四',
   },
   {
-    itemTypeId: 'yellow-triangle',
-    visualKey: 'yellow_triangle',
-    colorClassName: 'from-yellow-300 to-amber-500',
-    label: '三',
+    itemTypeId: 'block-gray-1x6',
+    visualKey: 'block-gray-1x6',
+    colorClassName: 'from-zinc-400 to-zinc-700',
+    label: '灰色一乘六',
   },
   {
-    itemTypeId: 'purple-diamond',
-    visualKey: 'purple_diamond',
-    colorClassName: 'from-violet-400 to-purple-700',
-    label: '菱',
+    itemTypeId: 'block-lavender-tile-2x2',
+    visualKey: 'block-lavender-tile-2x2',
+    colorClassName: 'from-purple-200 to-purple-500',
+    label: '薰衣草光板',
   },
   {
-    itemTypeId: 'green-square',
-    visualKey: 'green_square',
-    colorClassName: 'from-emerald-300 to-green-600',
-    label: '方',
+    itemTypeId: 'block-teal-tile-1x3',
+    visualKey: 'block-teal-tile-1x3',
+    colorClassName: 'from-teal-300 to-teal-700',
+    label: '青色长光板',
   },
   {
-    itemTypeId: 'blue-star',
-    visualKey: 'blue_star',
-    colorClassName: 'from-sky-300 to-blue-600',
-    label: '星',
+    itemTypeId: 'block-mint-tile-1x4',
+    visualKey: 'block-mint-tile-1x4',
+    colorClassName: 'from-emerald-100 to-emerald-400',
+    label: '薄荷长光板',
   },
   {
-    itemTypeId: 'orange-hexagon',
-    visualKey: 'orange_hexagon',
-    colorClassName: 'from-orange-300 to-orange-600',
-    label: '六',
+    itemTypeId: 'block-magenta-tile-2x2',
+    visualKey: 'block-magenta-tile-2x2',
+    colorClassName: 'from-fuchsia-500 to-pink-800',
+    label: '洋红光板',
   },
   {
-    itemTypeId: 'cyan-capsule',
-    visualKey: 'cyan_capsule',
-    colorClassName: 'from-cyan-300 to-teal-600',
-    label: '胶',
+    itemTypeId: 'block-orange-tile-2x2-stud',
+    visualKey: 'block-orange-tile-2x2-stud',
+    colorClassName: 'from-orange-300 to-amber-700',
+    label: '橙色单钉板',
   },
   {
-    itemTypeId: 'pink-heart',
-    visualKey: 'pink_heart',
-    colorClassName: 'from-pink-300 to-rose-500',
-    label: '心',
+    itemTypeId: 'block-purple-slope-1x2',
+    visualKey: 'block-purple-slope-1x2',
+    colorClassName: 'from-violet-400 to-violet-900',
+    label: '紫色斜坡',
   },
   {
-    itemTypeId: 'lime-leaf',
-    visualKey: 'lime_leaf',
-    colorClassName: 'from-lime-300 to-lime-600',
-    label: '叶',
+    itemTypeId: 'block-brown-slope-1x2',
+    visualKey: 'block-brown-slope-1x2',
+    colorClassName: 'from-orange-900 to-stone-700',
+    label: '棕色斜坡',
   },
   {
-    itemTypeId: 'white-moon',
-    visualKey: 'white_moon',
-    colorClassName: 'from-slate-100 to-slate-400',
-    label: '月',
+    itemTypeId: 'block-sky-slope-2x2',
+    visualKey: 'block-sky-slope-2x2',
+    colorClassName: 'from-sky-300 to-sky-600',
+    label: '天蓝斜坡',
+  },
+  {
+    itemTypeId: 'block-green-cylinder',
+    visualKey: 'block-green-cylinder',
+    colorClassName: 'from-green-400 to-green-800',
+    label: '绿色圆柱',
+  },
+  {
+    itemTypeId: 'block-clear-ring',
+    visualKey: 'block-clear-ring',
+    colorClassName: 'from-slate-50 to-slate-300',
+    label: '透明圆环',
+  },
+  {
+    itemTypeId: 'block-mint-arch',
+    visualKey: 'block-mint-arch',
+    colorClassName: 'from-emerald-100 to-emerald-300',
+    label: '薄荷拱门',
+  },
+  {
+    itemTypeId: 'block-gold-cone',
+    visualKey: 'block-gold-cone',
+    colorClassName: 'from-yellow-300 to-amber-700',
+    label: '金色锥形件',
   },
 ];
 
+function hashNumber(value: number) {
+  let state = Math.max(1, value >>> 0);
+  state ^= state << 13;
+  state ^= state >>> 7;
+  state ^= state << 17;
+  return state >>> 0;
+}
+
+function resolveSizeTierPlan(typeCount: number) {
+  const baseCounts = MATCH3D_SIZE_TIER_RULES.map((rule) => ({
+    ...rule,
+    count: Math.floor(typeCount * rule.ratio),
+    remainder: typeCount * rule.ratio - Math.floor(typeCount * rule.ratio),
+  }));
+  let assignedCount = baseCounts.reduce((sum, rule) => sum + rule.count, 0);
+  const remainderOrder = [...baseCounts].sort(
+    (left, right) => right.remainder - left.remainder,
+  );
+  let cursor = 0;
+  while (assignedCount < typeCount) {
+    remainderOrder[cursor % remainderOrder.length]!.count += 1;
+    assignedCount += 1;
+    cursor += 1;
+  }
+
+  return baseCounts.flatMap((rule) => Array(rule.count).fill(rule));
+}
+
+function selectVisualSeeds(clearCount: number): Match3DSelectedVisualSeed[] {
+  const typeCount = Math.min(MATCH3D_MAX_ITEM_TYPE_COUNT, clearCount);
+  const seeds = [...MATCH3D_VISUAL_SEEDS];
+  let state = hashNumber(clearCount * 2_654_435_761);
+  for (let index = seeds.length - 1; index > 0; index -= 1) {
+    state = hashNumber(state + index);
+    const swapIndex = state % (index + 1);
+    [seeds[index], seeds[swapIndex]] = [seeds[swapIndex]!, seeds[index]!];
+  }
+  const sizeTierPlan = resolveSizeTierPlan(typeCount);
+  return seeds.slice(0, typeCount).map((seed, index) => ({
+    ...seed,
+    radiusScale: sizeTierPlan[index]!.radiusScale,
+    relativeVolume: sizeTierPlan[index]!.relativeVolume,
+    sizeTier: sizeTierPlan[index]!.sizeTier,
+  }));
+}
+
 function createEmptyTray(): Match3DTraySlot[] {
   return Array.from({ length: MATCH3D_TRAY_SLOT_COUNT }, (_, slotIndex) => ({
     slotIndex,
@@ -188,7 +269,7 @@ function normalizeRemainingMs(run: Match3DRunSnapshot, nowMs = Date.now()) {
 }
 
 function buildItem(
-  seed: Match3DVisualSeed,
+  seed: Match3DSelectedVisualSeed,
   index: number,
   copyIndex: number,
 ): Match3DItemSnapshot {
@@ -198,9 +279,7 @@ function buildItem(
   const x = 0.5 + Math.cos(angle) * spread + ((index % 3) - 1) * 0.026;
   const y =
     0.5 + Math.sin(angle * 1.13) * spread + ((copyIndex % 3) - 1) * 0.02;
-  const baseRadius =
-    0.072 - Math.min(0.018, ring * 0.004) + (copyIndex % 2) * 0.004;
-  const radius = baseRadius * (seed.sizeScale ?? 1);
+  const radius = MATCH3D_LOCAL_BASE_RADIUS * seed.radiusScale;
   return {
     itemInstanceId: `${seed.itemTypeId}-${copyIndex + 1}`,
     itemTypeId: seed.itemTypeId,
@@ -332,12 +411,12 @@ function settleMatchedTrayItems(run: Match3DRunSnapshot) {
 
 export function startLocalMatch3DRun(clearCount = 12): Match3DRunSnapshot {
   const normalizedClearCount = Math.max(1, Math.round(clearCount));
-  const typeCount = Math.min(10, normalizedClearCount);
+  const selectedSeeds = selectVisualSeeds(normalizedClearCount);
   const items = Array.from({ length: normalizedClearCount }, (_, clearIndex) =>
     Array.from({ length: 3 }, (_, copyOffset) => {
       const seed =
-        MATCH3D_VISUAL_SEEDS[clearIndex % typeCount] ??
-        MATCH3D_VISUAL_SEEDS[0]!;
+        selectedSeeds[clearIndex % selectedSeeds.length] ??
+        selectedSeeds[0]!;
       return buildItem(
         seed,
         clearIndex * 3 + copyOffset,