diff --git a/scripts/parse_layout.py b/scripts/parse_layout.py
new file mode 100644
index 0000000..7d2b046
--- /dev/null
+++ b/scripts/parse_layout.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+"""
+按像素精确解析 PNG 平面图 —— 精确颜色分类 + 高分辨率网格化
+颜色规则（依据实际采样校准）：
+  W 黑色(0,0,0)             = 墙壁
+  O 灰色(176,176,176)       = 办公室
+  P 蓝色(64,176,240)        = 过道
+  R 绿色(80,176,96)         = 休息厅
+  Y 橙色(240,112,16)        = 共享工位区 / 楼道
+  C 青绿(80,224,192)        = 玻璃顶
+  . 白色(240,240,240)       = 空白/底
+"""
+import zlib, struct, sys, collections
+
+def read_png(path):
+    with open(path, 'rb') as f:
+        data = f.read()
+    assert data[:8] == b'\x89PNG\r\n\x1a\n', 'Not a PNG'
+    pos = 8
+    width = height = None
+    bit_depth = color_type = None
+    idat = b''
+    while pos < len(data):
+        ln = struct.unpack('>I', data[pos:pos+4])[0]
+        typ = data[pos+4:pos+8]
+        chunk = data[pos+8:pos+8+ln]
+        pos += 12 + ln
+        if typ == b'IHDR':
+            width, height, bit_depth, color_type, _, _, _ = struct.unpack('>IIBBBBB', chunk)
+        elif typ == b'IDAT':
+            idat += chunk
+        elif typ == b'IEND':
+            break
+    assert bit_depth == 8 and color_type in (2, 6) and width and height
+    raw = zlib.decompress(idat)
+    channels = 4 if color_type == 6 else 3
+    bpp = channels
+    stride = width * bpp
+    rows = []
+    off = 0
+    prev = bytearray(stride)
+    for y in range(height):
+        ft = raw[off]; off += 1
+        line = bytearray(raw[off:off+stride]); off += stride
+        if ft == 1:
+            for i in range(bpp, stride): line[i] = (line[i] + line[i-bpp]) & 0xFF
+        elif ft == 2:
+            for i in range(stride): line[i] = (line[i] + prev[i]) & 0xFF
+        elif ft == 3:
+            for i in range(stride):
+                a = line[i-bpp] if i >= bpp else 0
+                line[i] = (line[i] + ((a + prev[i]) >> 1)) & 0xFF
+        elif ft == 4:
+            for i in range(stride):
+                a = line[i-bpp] if i >= bpp else 0
+                b = prev[i]
+                c = prev[i-bpp] if i >= bpp else 0
+                p = a + b - c
+                pa, pb, pc = abs(p-a), abs(p-b), abs(p-c)
+                pr = a if (pa <= pb and pa <= pc) else (b if pb <= pc else c)
+                line[i] = (line[i] + pr) & 0xFF
+        rows.append(bytes(line))
+        prev = line
+    rgba = []
+    for line in rows:
+        if channels == 4:
+            rgba.append([(line[i], line[i+1], line[i+2], line[i+3]) for i in range(0, stride, 4)])
+        else:
+            rgba.append([(line[i], line[i+1], line[i+2], 255) for i in range(0, stride, 3)])
+    return width, height, rgba
+
+# 精确色板（中心色 + 容差）
+PALETTE = [
+    ('W', (0, 0, 0), 70),          # 黑 = 墙壁
+    ('O', (176, 176, 176), 40),    # 灰 = 办公室
+    ('P', (64, 176, 240), 45),     # 蓝 = 过道
+    ('R', (80, 176, 96), 40),      # 绿 = 休息厅
+    ('Y', (240, 112, 16), 55),     # 橙 = 共享工位/楼道
+    ('C', (80, 224, 192), 55),     # 青绿 = 玻璃顶
+    ('.', (240, 240, 240), 40),    # 白 = 空白
+]
+
+def classify(rgb):
+    r, g, b = rgb[:3]
+    best, best_d = '?', 1e9
+    for tag, (cr, cg, cb), tol in PALETTE:
+        d = abs(r-cr) + abs(g-cg) + abs(b-cb)
+        if d <= tol * 3 and d < best_d:
+            best, best_d = tag, d
+    return best
+
+def main(path, grid_cols=48, grid_rows=28, sub=3):
+    w, h, rgba = read_png(path)
+    print(f'PNG: {w}x{h}  网格: {grid_cols}x{grid_rows}')
+    cw, ch = w / grid_cols, h / grid_rows
+    grid = []
+    for gy in range(grid_rows):
+        row = []
+        for gx in range(grid_cols):
+            cx = int((gx + 0.5) * cw)
+            cy = int((gy + 0.5) * ch)
+            votes = collections.Counter()
+            rad_x, rad_y = max(2, int(cw*0.3)), max(2, int(ch*0.3))
+            for dy in range(-rad_y, rad_y+1, sub):
+                for dx in range(-rad_x, rad_x+1, sub):
+                    yy, xx = cy+dy, cx+dx
+                    if 0 <= yy < h and 0 <= xx < w:
+                        votes[classify(rgba[yy][xx])] += 1
+            row.append(votes.most_common(1)[0][0])
+        grid.append(row)
+    # 打印
+    print('   ' + ''.join(str(c % 10) for c in range(grid_cols)))
+    for gy, row in enumerate(grid):
+        print(f'{gy:2d} ' + ''.join(row))
+    return grid
+
+if __name__ == '__main__':
+    path = sys.argv[1] if len(sys.argv) > 1 else '详细的布局.png'
+    main(path)
diff --git a/src/components/Building3D.jsx b/src/components/Building3D.jsx
new file mode 100644
index 0000000..970ae94
--- /dev/null
+++ b/src/components/Building3D.jsx
@@ -0,0 +1,693 @@
+import { Canvas } from '@react-three/fiber';
+import { OrbitControls, Edges, Grid, Html } from '@react-three/drei';
+
+/* =========================================================
+   双良节能大楼 · 3D 建筑模型（React Three Fiber）
+   按「详细的布局.png」像素级重建 —— 60×42 网格
+   --------------------------------------------------------
+   设计原则：
+   · 颜色仅供理解，渲染统一：所有地面 = 同一浅灰色
+   · 靠资产区分功能：办公室=办公桌 · 会议室=会议长桌+讲台
+     · 休息区=沙发 · 共享工位=工位桌 · 楼道=真实楼梯
+   · 一楼大厅（玻璃顶下方挑空）外墙 + 窗户
+   · 二楼楼板避开玻璃顶中庭（两块拼接，无覆盖/无悬空）
+   · 相邻办公室共享一堵墙；过道两侧不设墙，门开向过道
+   ========================================================= */
+
+const U = 0.5; // 网格单位 → 世界单位（60×42 = 30×21）
+const FLOOR2 = 1.9; // 二楼楼板高度
+const ROOM_H = 1.5; // 二楼墙高
+const HALL_H = 2.4; // 一楼大厅净高（至玻璃顶）
+const T = 0.14; // 墙厚
+
+// 统一地面色（所有地面同一个颜色）
+const FLOOR_COLOR = '#e7ecf3';
+const WALL_COLOR = '#eef3fb';
+const WALL_EDGE = '#9db1cf';
+
+/* ---- 房间矩形（60×42 坐标 [x0,x1,z0,z1,type,no]）----
+   编号规则：成长区 G01-G08 · 国际区 I01-I07 · 加速区 A01-A12
+           会议室 M · 楼道 S · 共享工位区 W · 休息区 L · 过道 H
+   注意：编号用于逐间修正定位，保持稳定 */
+const ROOMS = [
+  // 玻璃顶（二楼中庭挑空）
+  { x: [1, 44], z: [1, 27], type: 'glass', no: 'T' },
+  // 右上：成长区(左 8 间) | 过道 | 国际区(右 7 间)
+  // 编号从底部开始：G1 在最下（行23-24），G8 在最上（行1-3）
+  // 企业按 Excel 场地安排：成长1=Facebook 越南跨境电商 → 成长8=综合直播私域平台
+  { x: [45, 51], z: [1, 3], type: 'office', zone: '成长区', no: 'G8', company: '综合性云南直播私域平台' },
+  { x: [53, 54], z: [1, 3], type: 'hallway', no: 'H01' },
+  { x: [55, 58], z: [1, 3], type: 'desk', no: 'W01' },
+  { x: [45, 48], z: [5, 6], type: 'office', zone: '成长区', no: 'G7', company: '云南星瑞航空' },
+  { x: [45, 48], z: [8, 9], type: 'office', zone: '成长区', no: 'G6', company: '五华区丽裳文化' },
+  { x: [45, 48], z: [11, 12], type: 'office', zone: '成长区', no: 'G5', company: '南菌优培食用菌' },
+  { x: [45, 48], z: [14, 15], type: 'office', zone: '成长区', no: 'G4', company: '昆明云韵体育' },
+  { x: [45, 48], z: [17, 18], type: 'office', zone: '成长区', no: 'G3', company: '朵哈·玫瑰特色产业链' },
+  { x: [45, 48], z: [20, 21], type: 'office', zone: '成长区', no: 'G2', company: '研X同行者网络' },
+  { x: [45, 48], z: [23, 24], type: 'office', zone: '成长区', no: 'G1', company: 'Facebook越南跨境电商' },
+  { x: [50, 53], z: [5, 25], type: 'hallway', no: 'H02' },
+  // 国际区编号从底部开始：I1 在最下（行23-24），I7 在最上（行5-6）
+  // 企业按 Excel：国际1=仰光客厅 → 国际7=达岸教育管理
+  { x: [55, 57], z: [5, 6], type: 'office', zone: '国际区', no: 'I7', company: '达岸教育管理' },
+  { x: [55, 57], z: [8, 9], type: 'office', zone: '国际区', no: 'I6', company: '昆明舒诺生物科技' },
+  { x: [55, 57], z: [11, 12], type: 'office', zone: '国际区', no: 'I5', company: '滇缅国际设计' },
+  { x: [55, 57], z: [14, 15], type: 'office', zone: '国际区', no: 'I4', company: '酷享野农AI农业' },
+  { x: [55, 57], z: [17, 18], type: 'office', zone: '国际区', no: 'I3', company: '中越生物医疗' },
+  { x: [55, 57], z: [20, 21], type: 'office', zone: '国际区', no: 'I2', company: '云南上古绝学文化' },
+  { x: [55, 57], z: [23, 24], type: 'office', zone: '国际区', no: 'I1', company: '仰光客厅' },
+  { x: [45, 58], z: [26, 27], type: 'hallway', no: 'H03' },
+  // 加速区：11 间办公室（下排6间 + 上排5间），编号从右下角开始
+  // 下排从右到左：A1-A5 + 左下角园区管理办公室
+  // 上排从右到左：A6-A10
+  // 企业按 Excel 场地安排：加速1=云南派音 → 加速10=云南大学AI平台
+  // ===== 上排（5 间 + 1 待入驻）=====
+  { x: [1, 4], z: [28, 32], type: 'office', zone: '加速区', no: 'A11', company: '待入驻' },
+  { x: [6, 12], z: [28, 32], type: 'office', zone: '加速区', no: 'A10', company: '待入驻' },
+  { x: [14, 16], z: [28, 32], type: 'office', zone: '加速区', no: 'A9', company: '云南大学AI+创业平台' },
+  { x: [18, 21], z: [28, 32], type: 'office', zone: '加速区', no: 'A8', company: '瀚颖AI+教育信息咨询' },
+  { x: [23, 26], z: [28, 32], type: 'office', zone: '加速区', no: 'A7', company: '云南廷秀文旅康养' },
+  { x: [28, 31], z: [28, 32], type: 'office', zone: '加速区', no: 'A6', company: '人工智能机器人大模型训练' },
+  { x: [32, 43], z: [28, 32], type: 'desk', no: 'W02' },
+  { x: [45, 48], z: [28, 32], type: 'lounge', no: 'L01' },
+  { x: [50, 58], z: [28, 32], type: 'hallway', no: 'H04' },
+  // 横向过道（行33-35）
+  { x: [1, 58], z: [33, 35], type: 'hallway', no: 'H05' },
+  // ===== 下排（6 间：A1-A5 + 园区管理办公室）=====
+  { x: [1, 4], z: [36, 40], type: 'office', zone: '管理', no: 'M', company: '园区管理办公室' },
+  { x: [6, 12], z: [36, 40], type: 'office', zone: '加速区', no: 'A12', company: '待入驻' },
+  { x: [14, 16], z: [36, 40], type: 'office', zone: '加速区', no: 'A5', company: '昆明智海银高文化科技' },
+  { x: [18, 21], z: [36, 40], type: 'office', zone: '加速区', no: 'A4', company: '云南宸中低空经济' },
+  { x: [23, 26], z: [36, 40], type: 'office', zone: '加速区', no: 'A3', company: '中泰研学合作' },
+  { x: [28, 30], z: [36, 40], type: 'meeting', no: 'M02' }, // 小会议室（A12 位置）
+  { x: [32, 33], z: [36, 40], type: 'stair', no: 'S01' }, // 楼道（真实楼梯通向一楼）
+  { x: [35, 45], z: [36, 40], type: 'meeting', no: 'M01' }, // 大会议室（长桌+讲台）
+  { x: [47, 49], z: [36, 40], type: 'office', zone: '加速区', no: 'A2', company: '米勒克尔蓝宝石珠宝' },
+  { x: [51, 54], z: [36, 40], type: 'office', zone: '加速区', no: 'A1', company: '云南派音人工智能科技' },
+];
+
+/* ---- 水平墙段 [z, x0, x1]（像素精确提取）----
+   说明：行1-3 顶部 G01 南墙在行4；行4/7/10/13/16/19/22/25 为成长区/国际区段间墙；
+   过道（列50-53）处无墙；行27 玻璃顶南墙；行28-40 加速区内部墙（单格垂直墙点） */
+const HWALLS = [
+  [0, 0, 58], // 北外墙
+  [4, 44, 49], [4, 51, 51], [4, 54, 58], // 顶部 G01 南墙（含列51 隔墙；列50 为过道口）
+  [7, 44, 49], [7, 54, 58],
+  [10, 44, 49], [10, 54, 58],
+  [13, 44, 49], [13, 54, 58],
+  [16, 44, 49], [16, 54, 58],
+  [19, 44, 49], [19, 54, 58],
+  [22, 44, 49], [22, 54, 58],
+  [25, 44, 49], [25, 54, 58],
+  [27, 0, 44], // 玻璃顶南墙（全高）
+  [41, 0, 53], // 南外墙
+];
+/* ---- 垂直墙段 [x, z0, z1]（像素精确提取）---- */
+const VWALLS = [
+  [0, 0, 41], // 西外墙
+  [5, 27, 32], [5, 36, 41],
+  [13, 27, 32], [13, 36, 41],
+  [17, 27, 32], [17, 36, 41],
+  [22, 27, 32], [22, 36, 41],
+  [27, 27, 32], [27, 36, 41],
+  [31, 36, 41], // 小会议室与楼道之间
+  [34, 36, 41], // 楼道与大会议室之间
+  [44, 0, 32], [44, 36, 41], // 玻璃顶东墙 / 大会议室西墙
+  [46, 36, 41], // 大会议室东墙
+  [49, 4, 5], [49, 7, 8], [49, 10, 11], [49, 13, 14], [49, 16, 17], [49, 19, 20], [49, 22, 23], // 成长区段间西侧墙
+  [49, 36, 41], // 底部
+  [50, 36, 41], // 底部 A12/A13 之间
+  [51, 0, 4], // 顶部共享工位西缘（G01 东墙）
+  [58, 0, 25], // 东外墙
+];
+
+const W = 60, D = 42;
+const cx = (x) => (x - W / 2) * U;
+const cz = (z) => (z - D / 2) * U;
+
+/* ---------- 基础组件 ---------- */
+
+function Wall({ x, z, w, h, axis = 'z', color = WALL_COLOR, edge = WALL_EDGE, y = 0 }) {
+  const size = axis === 'z' ? [w, h, T] : [T, h, w];
+  return (
+    <mesh position={[x, y + h / 2, z]} castShadow receiveShadow>
+      <boxGeometry args={size} />
+      <meshStandardMaterial color={color} roughness={0.82} metalness={0.03} />
+      <Edges color={edge} threshold={20} />
+    </mesh>
+  );
+}
+
+/* 窗（一楼外墙上的窗格：玻璃面板 + 窗框） */
+function Window({ x, z, w, h = 1.0, axis = 'z', y = 0.85 }) {
+  const size = axis === 'z' ? [w, h, 0.04] : [0.04, h, w];
+  return (
+    <mesh position={[x, y + h / 2, z]} castShadow>
+      <boxGeometry args={size} />
+      <meshStandardMaterial color="#bfe0ff" transparent opacity={0.5} roughness={0.08} metalness={0.2} />
+    </mesh>
+  );
+}
+
+/* 门（门框 + 门板 + 把手） */
+function Door({ x, z, rotY = 0, y = 0 }) {
+  return (
+    <group position={[x, y, z]} rotation={[0, rotY, 0]}>
+      <mesh position={[0, 0.62, 0]} castShadow>
+        <boxGeometry args={[0.8, 1.24, 0.06]} />
+        <meshStandardMaterial color="#8b9bb5" roughness={0.55} metalness={0.1} />
+      </mesh>
+      <mesh position={[0, 0.62, 0.05]}>
+        <boxGeometry args={[0.84, 1.28, 0.02]} />
+        <meshStandardMaterial color="#c4d0e2" roughness={0.5} metalness={0.15} />
+      </mesh>
+      <mesh position={[0.29, 0.56, 0.11]}>
+        <sphereGeometry args={[0.035, 10, 10]} />
+        <meshStandardMaterial color="#e8c46a" roughness={0.35} metalness={0.6} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 办公桌（办公桌 + 座椅） */
+function Desk({ x, z, y = 0, rotY = 0 }) {
+  return (
+    <group position={[x, y, z]} rotation={[0, rotY, 0]}>
+      <mesh position={[0, 0.4, 0]} castShadow>
+        <boxGeometry args={[1.1, 0.05, 0.55]} />
+        <meshStandardMaterial color="#f0e6d2" roughness={0.6} metalness={0.05} />
+      </mesh>
+      <mesh position={[0, 0.2, 0]} castShadow>
+        <boxGeometry args={[0.06, 0.4, 0.5]} />
+        <meshStandardMaterial color="#d8cbb2" roughness={0.7} />
+      </mesh>
+      {/* 显示器 */}
+      <mesh position={[0, 0.62, -0.1]} castShadow>
+        <boxGeometry args={[0.4, 0.3, 0.04]} />
+        <meshStandardMaterial color="#2e3a4e" roughness={0.3} metalness={0.2} />
+      </mesh>
+      {/* 座椅 */}
+      <mesh position={[0.5, 0.24, 0]} castShadow>
+        <boxGeometry args={[0.45, 0.08, 0.45]} />
+        <meshStandardMaterial color="#5c6b85" roughness={0.7} />
+      </mesh>
+      <mesh position={[0.5, 0.45, 0]} castShadow>
+        <boxGeometry args={[0.45, 0.4, 0.06]} />
+        <meshStandardMaterial color="#5c6b85" roughness={0.7} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 圆桌（茶几） */
+function Table({ x, z, y = 0, s = 1 }) {
+  return (
+    <group position={[x, y, z]}>
+      <mesh position={[0, 0.18 * s, 0]} castShadow receiveShadow>
+        <cylinderGeometry args={[0.22 * s, 0.26 * s, 0.34 * s, 24]} />
+        <meshStandardMaterial color="#e9eef7" roughness={0.6} metalness={0.05} />
+      </mesh>
+      <mesh position={[0, 0.38 * s, 0]} castShadow>
+        <cylinderGeometry args={[0.32 * s, 0.32 * s, 0.05 * s, 28]} />
+        <meshStandardMaterial color="#ffffff" roughness={0.45} metalness={0.06} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 会议长桌 + 座椅 */
+function MeetingTable({ x, z, y = 0, rotY = 0, len = 2.6 }) {
+  return (
+    <group position={[x, y, z]} rotation={[0, rotY, 0]}>
+      <mesh position={[0, 0.42, 0]} castShadow>
+        <boxGeometry args={[len, 0.05, 1.0]} />
+        <meshStandardMaterial color="#e8dcc4" roughness={0.55} metalness={0.05} />
+      </mesh>
+      {[0, 1].map((i) => (
+        <mesh key={`leg${i}`} position={[len / 2 - 0.15 - i * (len - 0.3), 0.2, 0]} castShadow>
+          <boxGeometry args={[0.07, 0.4, 0.9]} />
+          <meshStandardMaterial color="#d8cbb2" roughness={0.7} />
+        </mesh>
+      ))}
+      {[-0.5, 0, 0.5].map((dx) => (
+        <mesh key={`chair${dx}`} position={[dx * (len / 2 - 0.4), 0.24, 0.75]} castShadow>
+          <boxGeometry args={[0.5, 0.08, 0.5]} />
+          <meshStandardMaterial color="#4f5f7a" roughness={0.7} />
+        </mesh>
+      ))}
+    </group>
+  );
+}
+
+/* 讲台（会议室讲台） */
+function Podium({ x, z, y = 0 }) {
+  return (
+    <group position={[x, y, z]}>
+      <mesh position={[0, 0.5, 0]} castShadow>
+        <boxGeometry args={[0.7, 1.0, 0.5]} />
+        <meshStandardMaterial color="#b9986a" roughness={0.6} metalness={0.1} />
+      </mesh>
+      <mesh position={[0, 1.02, 0]}>
+        <boxGeometry args={[0.76, 0.05, 0.56]} />
+        <meshStandardMaterial color="#a8875c" roughness={0.5} metalness={0.1} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 工位桌（共享工位区） */
+function Workstation({ x, z, y = 0, rotY = 0 }) {
+  return (
+    <group position={[x, y, z]} rotation={[0, rotY, 0]}>
+      <mesh position={[0, 0.4, 0]} castShadow>
+        <boxGeometry args={[1.0, 0.05, 0.6]} />
+        <meshStandardMaterial color="#e7dcc8" roughness={0.6} metalness={0.05} />
+      </mesh>
+      <mesh position={[0, 0.2, 0]} castShadow>
+        <boxGeometry args={[0.05, 0.4, 0.55]} />
+        <meshStandardMaterial color="#d0c3ab" roughness={0.7} />
+      </mesh>
+      <mesh position={[0, 0.6, 0]} castShadow>
+        <boxGeometry args={[0.5, 0.34, 0.04]} />
+        <meshStandardMaterial color="#33415c" roughness={0.3} metalness={0.2} />
+      </mesh>
+      <mesh position={[0.48, 0.24, 0]} castShadow>
+        <boxGeometry args={[0.4, 0.08, 0.4]} />
+        <meshStandardMaterial color="#6b7a94" roughness={0.7} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 沙发 */
+function Sofa({ x, z, y = 0, rotY = 0 }) {
+  return (
+    <group position={[x, y, z]} rotation={[0, rotY, 0]}>
+      <mesh position={[0, 0.2, 0]} castShadow>
+        <boxGeometry args={[0.9, 0.18, 0.4]} />
+        <meshStandardMaterial color="#8fbfa8" roughness={0.75} />
+      </mesh>
+      <mesh position={[0, 0.4, -0.15]} castShadow>
+        <boxGeometry args={[0.9, 0.42, 0.15]} />
+        <meshStandardMaterial color="#7fb39c" roughness={0.75} />
+      </mesh>
+      <mesh position={[-0.38, 0.33, 0.02]} castShadow>
+        <boxGeometry args={[0.14, 0.28, 0.38]} />
+        <meshStandardMaterial color="#7fb39c" roughness={0.75} />
+      </mesh>
+      <mesh position={[0.38, 0.33, 0.02]} castShadow>
+        <boxGeometry args={[0.14, 0.28, 0.38]} />
+        <meshStandardMaterial color="#7fb39c" roughness={0.75} />
+      </mesh>
+      <mesh position={[-0.3, 0.28, 0.22]} castShadow>
+        <boxGeometry args={[0.18, 0.14, 0.12]} />
+        <meshStandardMaterial color="#e8d9a8" roughness={0.8} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 绿植 */
+function Plant({ x, z, y = 0, s = 1 }) {
+  return (
+    <group position={[x, y, z]}>
+      <mesh position={[0, 0.2 * s, 0]} castShadow>
+        <cylinderGeometry args={[0.08 * s, 0.11 * s, 0.4 * s, 16]} />
+        <meshStandardMaterial color="#c9b28a" roughness={0.8} />
+      </mesh>
+      <mesh position={[0, 0.56 * s, 0]} castShadow>
+        <sphereGeometry args={[0.3 * s, 20, 20]} />
+        <meshStandardMaterial color="#3fae7f" roughness={0.7} />
+      </mesh>
+    </group>
+  );
+}
+
+/* 楼梯（楼道：从二楼通向一楼，真实踏步+扶手） */
+function Stairs({ x, z, y = 0, rotY = 0, steps = 9, stepW = 0.9, stepD = 0.24, rise = 0.21 }) {
+  const els = [];
+  for (let i = 0; i < steps; i++) {
+    const dz = i * stepD;
+    const h = y + rise * i;
+    els.push(
+      <mesh key={`st${i}`} position={[0, h + rise / 2, dz]} castShadow receiveShadow>
+        <boxGeometry args={[stepW, rise, stepD]} />
+        <meshStandardMaterial color="#e8eef5" roughness={0.6} metalness={0.02} />
+      </mesh>
+    );
+  }
+  // 扶手（两侧）
+  const railLen = steps * stepD + 0.3;
+  const railH = y + rise * (steps - 1) + 0.95;
+  [-stepW / 2 - 0.06, stepW / 2 + 0.06].forEach((rx) => {
+    els.push(
+      <mesh key={`rp${rx}`} position={[rx, railH - 0.05, railLen / 2 - 0.15]} castShadow>
+        <boxGeometry args={[0.04, 1.0, 0.04]} />
+        <meshStandardMaterial color="#a9bccf" roughness={0.4} metalness={0.4} />
+      </mesh>
+    );
+    els.push(
+      <mesh key={`rl${rx}`} position={[rx, railH, railLen / 2 - 0.15]} castShadow>
+        <boxGeometry args={[0.04, 0.06, railLen]} />
+        <meshStandardMaterial color="#c4d2e2" roughness={0.4} metalness={0.4} />
+      </mesh>
+    );
+  });
+  return (
+    <group position={[x, y, z]} rotation={[0, rotY, 0]}>
+      {els}
+    </group>
+  );
+}
+
+function ZoneTag({ x, y, z, cls, label, sub, no }) {
+  return (
+    <Html position={[x, y, z]} center distanceFactor={13} zIndexRange={[40, 0]} style={{ pointerEvents: 'none' }}>
+      <div className={`bd3d-tag${cls ? ` ${cls}` : ''}`}>
+        {sub && <span className={`bd3d-bubble ${sub.cls}`}>{sub.text}</span>}
+        <span className="bd3d-roomname">
+          {no && <b className="bd3d-no">{no}</b>}
+          {label}
+        </span>
+      </div>
+    </Html>
+  );
+}
+
+/* ---------- 建筑主体 ---------- */
+function Building() {
+  const floors = [];
+  const walls = [];
+  const roofs = [];
+  const furniture = [];
+  const tags = [];
+  const doors = [];
+
+  /* ===== 1. 一楼大厅（玻璃顶下方挑空） ===== */
+  const hx0 = cx(0), hx1 = cx(44);
+  const hz0 = cz(0), hz1 = cz(27);
+  const hcX = (hx0 + hx1) / 2, hcZ = (hz0 + hz1) / 2;
+  const hW = hx1 - hx0, hD = hz1 - hz0;
+
+  // 一楼地面（统一色）
+  floors.push(
+    <mesh key="hf" position={[hcX, 0.02, hcZ]} receiveShadow>
+      <boxGeometry args={[hW - 0.3, 0.04, hD - 0.3]} />
+      <meshStandardMaterial color={FLOOR_COLOR} roughness={0.9} metalness={0} />
+    </mesh>
+  );
+
+  // 一楼大厅外墙（高度 = FLOOR2，不穿过二楼楼板）+ 窗户
+  const hallWalls = [
+    { axis: 'z', pos: 0, from: 0, to: 44 },
+    { axis: 'z', pos: 27, from: 0, to: 44 },
+    { axis: 'x', pos: 0, from: 0, to: 27 },
+    { axis: 'x', pos: 44, from: 0, to: 27 },
+  ];
+  hallWalls.forEach((wl, i) => {
+    const posW = wl.axis === 'z' ? cz(wl.pos) : cx(wl.pos);
+    const fromW = wl.axis === 'z' ? cx(wl.from) : cz(wl.from);
+    const toW = wl.axis === 'z' ? cx(wl.to) : cz(wl.to);
+    walls.push(
+      <Wall key={`hw${i}`} x={wl.axis === 'z' ? (fromW + toW) / 2 : posW} z={wl.axis === 'z' ? posW : (fromW + toW) / 2}
+        w={Math.abs(toW - fromW)} h={FLOOR2} axis={wl.axis} color="#e9f0f8" edge="#9db1cf" y={0} />
+    );
+    // 窗（沿墙均匀分布）
+    const len = Math.abs(toW - fromW);
+    const winN = Math.max(2, Math.floor(len / 2.4));
+    for (let wi = 0; wi < winN; wi++) {
+      const t = (wi + 0.5) / winN;
+      const pos = fromW + len * t;
+      if (wl.axis === 'z') {
+        walls.push(<Window key={`win${i}_${wi}`} x={pos} z={posW + (wl.pos === 27 ? -0.03 : 0.03)} w={len / winN - 0.4} axis="z" />);
+      } else {
+        walls.push(<Window key={`win${i}_${wi}`} x={posW + (wl.pos === 44 ? -0.03 : 0.03)} z={pos} w={len / winN - 0.4} axis="x" />);
+      }
+    }
+  });
+
+  // 大厅立柱
+  for (let i = 0; i <= 8; i++) {
+    const t = i / 8;
+    const px = hx0 + 0.8 + (hW - 1.6) * t;
+    furniture.push(<mesh key={`c1${i}`} position={[px, FLOOR2 / 2, hz0 + 1.5]} castShadow>
+      <cylinderGeometry args={[0.09, 0.12, FLOOR2, 12]} />
+      <meshStandardMaterial color="#eef2f9" roughness={0.5} metalness={0.1} />
+    </mesh>);
+    furniture.push(<mesh key={`c2${i}`} position={[px, FLOOR2 / 2, hz1 - 1.5]} castShadow>
+      <cylinderGeometry args={[0.09, 0.12, FLOOR2, 12]} />
+      <meshStandardMaterial color="#eef2f9" roughness={0.5} metalness={0.1} />
+    </mesh>);
+  }
+  // 吊灯（二楼楼板下方）
+  [hcX - 4, hcX, hcX + 4].forEach((lx, li) => {
+    furniture.push(
+      <group key={`hl${li}`} position={[lx, 0, hcZ]}>
+        <mesh position={[0, FLOOR2 - 0.4, 0]}><cylinderGeometry args={[0.04, 0.04, 0.35, 10]} /><meshStandardMaterial color="#b9c8de" roughness={0.3} metalness={0.5} /></mesh>
+        <mesh position={[0, FLOOR2 - 0.75, 0]}><sphereGeometry args={[0.18, 24, 24]} /><meshStandardMaterial color="#fff3cf" emissive="#ffd97a" emissiveIntensity={1.1} roughness={0.15} /></mesh>
+      </group>
+    );
+  });
+  // 大厅家具
+  furniture.push(<Sofa key="hs1" x={hcX - 2} z={hcZ + 1.5} />);
+  furniture.push(<Sofa key="hs2" x={hcX + 2} z={hcZ - 1.5} />);
+  furniture.push(<Table key="ht1" x={hcX} z={hcZ} s={1.2} />);
+  furniture.push(<Plant key="hp1" x={hx0 + 2.4} z={hcZ} s={1.3} />);
+  furniture.push(<Plant key="hp2" x={hx1 - 2.4} z={hcZ} s={1.3} />);
+  tags.push(<ZoneTag key="hall" x={hcX} y={FLOOR2 + 0.4} z={hcZ} cls="glass" label="一楼大厅" />);
+
+  /* ===== 2. 二楼整体地面（两块拼接，避开玻璃顶中庭） ===== */
+  // 右上块：x[45,58] z[1,28]
+  floors.push(
+    <mesh key="f2r" position={[(cx(45) + cx(58)) / 2, FLOOR2, (cz(1) + cz(28)) / 2]} receiveShadow castShadow>
+      <boxGeometry args={[cx(58) - cx(45) + 0.2, 0.05, cz(28) - cz(1) + 0.2]} />
+      <meshStandardMaterial color={FLOOR_COLOR} roughness={0.88} metalness={0} />
+    </mesh>
+  );
+  // 加速块：x[1,58] z[28,41]
+  floors.push(
+    <mesh key="f2a" position={[(cx(1) + cx(58)) / 2, FLOOR2, (cz(28) + cz(41)) / 2]} receiveShadow castShadow>
+      <boxGeometry args={[cx(58) - cx(1) + 0.2, 0.05, cz(41) - cz(28) + 0.2]} />
+      <meshStandardMaterial color={FLOOR_COLOR} roughness={0.88} metalness={0} />
+    </mesh>
+  );
+
+  /* ===== 3. 房间家具 + 标签（地面统一色，不铺色块） ===== */
+  ROOMS.forEach((r, i) => {
+    const x0 = cx(r.x[0]), x1 = cx(r.x[1]);
+    const z0 = cz(r.z[0]), z1 = cz(r.z[1]);
+    const cX = (x0 + x1) / 2, cZ = (z0 + z1) / 2;
+    const w = x1 - x0, d = z1 - z0;
+
+    if (r.type === 'glass') {
+      // 玻璃顶：二楼中庭挑空；绿植放中庭平台
+      furniture.push(<Plant key={`g1${i}`} x={x0 + 1.8} z={z0 + 1.8} y={FLOOR2} s={1} />);
+      furniture.push(<Plant key={`g2${i}`} x={x1 - 1.8} z={z1 - 1.8} y={FLOOR2} s={1} />);
+      // 玻璃天窗（青绿半透明 + 框架梁）
+      const gw = w + 0.4, gd = d + 0.4;
+      roofs.push(
+        <mesh key="growf" position={[cX, FLOOR2 + ROOM_H + 0.25, cZ]} castShadow>
+          <boxGeometry args={[gw, 0.05, gd]} />
+          <meshStandardMaterial color="#8fd8c0" transparent opacity={0.28} roughness={0.05} metalness={0.25} />
+        </mesh>
+      );
+      for (let k = 0; k <= 8; k++) {
+        const t = k / 8;
+        const px = x0 - 0.2 + gw * t;
+        roofs.push(<mesh key={`gx${i}_${k}`} position={[px, FLOOR2 + ROOM_H + 0.28, cZ]}><boxGeometry args={[0.06, 0.09, gd + 0.4]} /><meshStandardMaterial color="#dbe7f5" roughness={0.4} metalness={0.2} /></mesh>);
+      }
+      for (let k = 0; k <= 4; k++) {
+        const t = k / 4;
+        const pz = z0 - 0.2 + gd * t;
+        roofs.push(<mesh key={`gz${i}_${k}`} position={[cX, FLOOR2 + ROOM_H + 0.28, pz]}><boxGeometry args={[gw + 0.4, 0.09, 0.06]} /><meshStandardMaterial color="#dbe7f5" roughness={0.4} metalness={0.2} /></mesh>);
+      }
+      tags.push(<ZoneTag key={`zt${i}`} x={cX} y={FLOOR2 + ROOM_H + 0.7} z={cZ} cls="glass" label="玻璃顶" />);
+      return;
+    }
+
+    // 过道顶棚（右侧竖过道、横向过道）
+    if (r.type === 'hallway') {
+      roofs.push(
+        <mesh key={`hr${i}`} position={[cX, FLOOR2 + 0.5, cZ]}>
+          <boxGeometry args={[w - 0.1, 0.05, d - 0.1]} />
+          <meshStandardMaterial color="#c3d8f2" transparent opacity={0.3} roughness={0.1} metalness={0.1} />
+        </mesh>
+      );
+      return;
+    }
+
+    // 家具按功能区分（地面统一色，靠资产区分）
+    if (r.type === 'office') {
+      // 办公室：办公桌（按面积放置多张）
+      const nX = Math.max(1, Math.floor((r.x[1] - r.x[0]) / 3.5));
+      const nZ = Math.max(1, Math.floor((r.z[1] - r.z[0]) / 3.5));
+      const total = Math.min(4, nX * nZ);
+      let idx = 0;
+      for (let ix = 0; ix < nX && idx < total; ix++) {
+        for (let iz = 0; iz < nZ && idx < total; iz++, idx++) {
+          const dx = (ix + 0.5) / nX - 0.5;
+          const dz = (iz + 0.5) / nZ - 0.5;
+          furniture.push(<Desk key={`d${i}_${idx}`} x={cX + dx * w} z={cZ + dz * d} y={FLOOR2} />);
+        }
+      }
+    } else if (r.type === 'desk') {
+      // 共享工位区：工位桌多张
+      const nX = Math.max(2, Math.floor((r.x[1] - r.x[0]) / 3));
+      const nZ = Math.max(1, Math.floor((r.z[1] - r.z[0]) / 3));
+      let idx = 0;
+      for (let ix = 0; ix < nX; ix++) {
+        for (let iz = 0; iz < nZ; iz++, idx++) {
+          const dx = (ix + 0.5) / nX - 0.5;
+          const dz = (iz + 0.5) / nZ - 0.5;
+          furniture.push(<Workstation key={`ws${i}_${idx}`} x={cX + dx * w} z={cZ + dz * d} y={FLOOR2} />);
+        }
+      }
+    } else if (r.type === 'lounge') {
+      // 休息区：多张沙发 + 茶几
+      furniture.push(<Sofa key={`l1${i}`} x={cX - 0.6} z={cZ - 0.5} y={FLOOR2} rotY={0.5} />);
+      furniture.push(<Sofa key={`l2${i}`} x={cX + 0.6} z={cZ - 0.5} y={FLOOR2} rotY={-0.5} />);
+      furniture.push(<Sofa key={`l3${i}`} x={cX} z={cZ + 0.7} y={FLOOR2} rotY={Math.PI} />);
+      furniture.push(<Table key={`l4${i}`} x={cX} z={cZ} y={FLOOR2} s={0.8} />);
+    } else if (r.type === 'meeting') {
+      // 会议室：按面积区分——大会议室（长桌+讲台），小会议室（单张会议桌）
+      const area = (r.x[1] - r.x[0]) * (r.z[1] - r.z[0]);
+      if (area >= 40) {
+        // 大会议室（M01）：两张会议长桌 + 讲台
+        furniture.push(<MeetingTable key={`m1${i}`} x={cX - 0.5} z={cZ} y={FLOOR2} rotY={Math.PI / 2} len={Math.min(3.2, d - 0.8)} />);
+        furniture.push(<MeetingTable key={`m2${i}`} x={cX + 1.8} z={cZ} y={FLOOR2} rotY={Math.PI / 2} len={2.4} />);
+        furniture.push(<Podium key={`m3${i}`} x={cX - 2.6} z={cZ} y={FLOOR2} />);
+      } else {
+        // 小会议室（M02）：单张会议长桌 + 四周座椅
+        furniture.push(<MeetingTable key={`m1${i}`} x={cX} z={cZ} y={FLOOR2} rotY={Math.PI / 2} len={Math.min(2.0, w - 0.6)} />);
+      }
+    } else if (r.type === 'stair') {
+      // 楼道：真实楼梯（二楼 → 一楼）
+      const sX = (x0 + x1) / 2;
+      const sZ = (z0 + z1) / 2;
+      const sLen = z1 - z0;
+      furniture.push(
+        <Stairs key={`st${i}`} x={sX} z={sZ} y={FLOOR2} rotY={Math.PI} steps={9} stepW={Math.min(0.9, w - 0.1)} stepD={sLen / 9} rise={0.2} />
+      );
+    }
+    // 标签：每个房间显示编号（编号 + 名称），办公室显示入驻企业名
+    const noLabel = r.no || '';
+    const typeLabel =
+      r.type === 'desk' ? '共享工位区' :
+      r.type === 'lounge' ? '休息区' :
+      r.type === 'meeting' ? '会议室' :
+      r.type === 'stair' ? '楼道' :
+      r.type === 'office' ? (r.company || r.zone || '办公室') :
+      '过道';
+    tags.push(
+      <ZoneTag key={`zt${i}`} x={cX} y={FLOOR2 + ROOM_H + 0.55} z={cZ}
+        cls={r.type === 'office' ? 'office' : r.type}
+        no={noLabel}
+        label={typeLabel}
+      />
+    );
+  });
+
+  /* ===== 4. 墙体（像素墙段精确生成，无交叉穿出） ===== */
+  HWALLS.forEach(([z, x0, x1], i) => {
+    walls.push(
+      <Wall key={`h_${i}`} x={cx((x0 + x1) / 2)} z={cz(z)} w={(x1 - x0 + 1) * U} h={ROOM_H} axis="z" y={FLOOR2} />
+    );
+  });
+  VWALLS.forEach(([x, z0, z1], i) => {
+    walls.push(
+      <Wall key={`v_${i}`} x={cx(x)} z={cz((z0 + z1) / 2)} w={(z1 - z0 + 1) * U} h={ROOM_H} axis="x" y={FLOOR2} />
+    );
+  });
+
+  // 玻璃顶中庭四周矮围栏（二楼，0.65 高）
+  const gl = ROOMS.find((r) => r.type === 'glass');
+  const gx0 = cx(gl.x[0]), gx1 = cx(gl.x[1]);
+  const gz0 = cz(gl.z[0]), gz1 = cz(gl.z[1]);
+  const railH = 0.65;
+  walls.push(<Wall key="railN" x={(gx0 + gx1) / 2} z={gz0} w={gx1 - gx0} h={railH} axis="z" y={FLOOR2} />);
+  walls.push(<Wall key="railS" x={(gx0 + gx1) / 2} z={gz1} w={gx1 - gx0} h={railH} axis="z" y={FLOOR2} />);
+  walls.push(<Wall key="railW" x={gx0} z={(gz0 + gz1) / 2} w={gz1 - gz0} h={railH} axis="x" y={FLOOR2} />);
+  walls.push(<Wall key="railE" x={gx1} z={(gz0 + gz1) / 2} w={gz1 - gz0} h={railH} axis="x" y={FLOOR2} />);
+
+  /* ===== 5. 办公室门：全部开向过道一侧（门嵌于墙段位置） ===== */
+  ROOMS.forEach((r, i) => {
+    if (r.type !== 'office') return;
+    const z0 = cz(r.z[0]), z1 = cz(r.z[1]);
+    const cZ = (z0 + z1) / 2;
+    const cX = (cx(r.x[0]) + cx(r.x[1])) / 2;
+
+    if (r.zone === '成长区') {
+      // 成长区东侧是过道（列50-53），门开在 x=49 墙段位置（列49 是墙）
+      doors.push(<Door key={`d${i}e`} x={cx(49)} z={cZ} rotY={Math.PI / 2} y={FLOOR2} />);
+    } else if (r.zone === '国际区') {
+      // 国际区西侧是过道，门开在 x=54 墙段位置（列54 是墙）
+      doors.push(<Door key={`d${i}w`} x={cx(54)} z={cZ} rotY={-Math.PI / 2} y={FLOOR2} />);
+    } else if (r.zone === '加速区' || r.zone === '管理') {
+      if (r.z[1] <= 32) {
+        // 上排：南侧是横向过道（行33-35），门开在 z=32
+        doors.push(<Door key={`d${i}s`} x={cX} z={cz(32)} rotY={Math.PI} y={FLOOR2} />);
+      } else {
+        // 下排：北侧是横向过道，门开在 z=36
+        doors.push(<Door key={`d${i}n`} x={cX} z={cz(36)} rotY={0} y={FLOOR2} />);
+      }
+    }
+  });
+
+  /* ===== 6. 区域标签 ===== */
+  tags.push(<ZoneTag key="zc" x={cx(47)} y={FLOOR2 + ROOM_H + 1.3} z={cz(2)} cls="office" no="G" label="成长区" />);
+  tags.push(<ZoneTag key="zi" x={cx(56)} y={FLOOR2 + ROOM_H + 1.3} z={cz(2)} cls="office" no="I" label="国际区" />);
+  tags.push(<ZoneTag key="za" x={cx(18)} y={FLOOR2 + ROOM_H + 0.9} z={cz(30)} cls="office" no="A" label="加速区" />);
+  tags.push(<ZoneTag key="t1" x={cx(48)} y={FLOOR2 + ROOM_H + 1.1} z={cz(14)} cls="office" no="G4" label="成长区" sub={{ text: 'AI 工具调用 128 次/h', cls: 'ok' }} />);
+  tags.push(<ZoneTag key="t2" x={cx(3)} y={FLOOR2 + ROOM_H + 0.6} z={cz(30)} cls="office" no="A12" label="加速区" sub={{ text: '今日营收 +¥1.6万', cls: 'cold' }} />);
+  tags.push(<ZoneTag key="t3" x={cx(57)} y={FLOOR2 + ROOM_H + 0.6} z={cz(30)} cls="office" no="I1" label="国际区" sub={{ text: '工位使用率 92%', cls: 'hot' }} />);
+
+  return (
+    <group>
+      {/* 地基 */}
+      <mesh position={[0, -0.09, 0]} receiveShadow castShadow>
+        <boxGeometry args={[W * U + 0.4, 0.18, D * U + 0.4]} />
+        <meshStandardMaterial color="#eef2f8" roughness={0.92} metalness={0} />
+        <Edges color="#cfdced" threshold={20} />
+      </mesh>
+      {floors}
+      {walls}
+      {doors}
+      {roofs}
+      {furniture}
+      {tags}
+      {/* 底座平台 */}
+      <mesh position={[0, -0.38, 0]} receiveShadow castShadow>
+        <boxGeometry args={[W * U + 0.8, 0.44, D * U + 0.8]} />
+        <meshStandardMaterial color="#e4eaf3" roughness={0.75} metalness={0.02} />
+        <Edges color="#c3d3e8" threshold={20} />
+      </mesh>
+    </group>
+  );
+}
+
+/* ---------- 场景 ---------- */
+export default function Building3D({ interactive = true }) {
+  return (
+    <div className="bd3d-wrap">
+      <Canvas
+        shadows
+        dpr={[1, 1.75]}
+        camera={{ position: [20, 16, 24], fov: 38 }}
+        gl={{ antialias: true, alpha: true }}
+      >
+        <ambientLight intensity={0.55} />
+        <directionalLight position={[14, 22, 12]} intensity={1.1} castShadow shadow-mapSize={[2048, 2048]}
+          shadow-camera-left={-26} shadow-camera-right={26} shadow-camera-top={26} shadow-camera-bottom={-26} />
+        <directionalLight position={[-14, 10, -10]} intensity={0.3} />
+        <hemisphereLight args={['#ffffff', '#dfe9f7', 0.35]} />
+
+        <Building />
+
+        <Grid position={[0, -0.62, 0]} args={[80, 80]} cellSize={0.8} cellThickness={0.6} cellColor="#d3e0f0"
+          sectionSize={4} sectionThickness={1} sectionColor="#bcd0e8" fadeDistance={40} fadeStrength={2.5} infiniteGrid />
+
+        <OrbitControls makeDefault autoRotate={interactive} autoRotateSpeed={0.5} enablePan={false} enableZoom={interactive}
+          minDistance={10} maxDistance={55} maxPolarAngle={Math.PI / 2.05} minPolarAngle={Math.PI / 7} target={[0, 1.6, 0]} />
+      </Canvas>
+    </div>
+  );
+}