diff --git a/addons/yt_world/data/yt_world_build_item.xml b/addons/yt_world/data/yt_world_build_item.xml
index 91f633f..d932d7d 100644
--- a/addons/yt_world/data/yt_world_build_item.xml
+++ b/addons/yt_world/data/yt_world_build_item.xml
@@ -6,35 +6,35 @@
     <field name="code">road_auto</field><field name="name">道路</field>
     <field name="category">road</field><field name="icon">assets/roads/5.png</field>
     <field name="footprint_w">1</field><field name="footprint_h">1</field><field name="sequence">5</field>
-    <field name="cost_gold">1</field>
+    <field name="cost_gold">0</field>
     <field name="terrains">["plain","forest"]</field>
   </record>
   <record id="bi_road_t" model="yt.world.build.item">
     <field name="code">road_t</field><field name="name">T字路口</field>
     <field name="category">road</field><field name="icon">assets/roads/1.png</field>
     <field name="footprint_w">1</field><field name="footprint_h">1</field><field name="sequence">10</field>
-    <field name="cost_gold">1</field>
+    <field name="cost_gold">0</field>
     <field name="terrains">["plain","forest"]</field>
   </record>
   <record id="bi_road_cross" model="yt.world.build.item">
     <field name="code">road_cross</field><field name="name">十字路口</field>
     <field name="category">road</field><field name="icon">assets/roads/2.png</field>
     <field name="footprint_w">1</field><field name="footprint_h">1</field><field name="sequence">20</field>
-    <field name="cost_gold">1</field>
+    <field name="cost_gold">0</field>
     <field name="terrains">["plain","forest"]</field>
   </record>
   <record id="bi_road_corner" model="yt.world.build.item">
     <field name="code">road_corner</field><field name="name">弯道</field>
     <field name="category">road</field><field name="icon">assets/roads/4.png</field>
     <field name="footprint_w">1</field><field name="footprint_h">1</field><field name="sequence">30</field>
-    <field name="cost_gold">1</field>
+    <field name="cost_gold">0</field>
     <field name="terrains">["plain","forest"]</field>
   </record>
   <record id="bi_road_straight" model="yt.world.build.item">
     <field name="code">road_straight</field><field name="name">直路</field>
     <field name="category">road</field><field name="icon">assets/roads/5.png</field>
     <field name="footprint_w">1</field><field name="footprint_h">1</field><field name="sequence">40</field>
-    <field name="cost_gold">1</field>
+    <field name="cost_gold">0</field>
     <field name="terrains">["plain","forest"]</field>
   </record>
   <!-- 地面 -->
diff --git a/world.html b/world.html
index 984f976..4efb5ab 100644
--- a/world.html
+++ b/world.html
@@ -526,14 +526,6 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
 #loadingScreen .loadBar { flex: 1; max-width: none; height: 12px; background: rgba(255,255,255,0.1); border-radius: 6px; overflow: hidden; }
 #loadingScreen .loadFill { height: 100%; width: 0%; background: linear-gradient(90deg, #4af, #a8e6cf); border-radius: 6px; transition: width 0.3s; }
 #loadingScreen .loadPct { font-size: 20px; color: #4af; font-variant-numeric: tabular-nums; letter-spacing: 1px; }
-#loadingScreen .loadTip {
-  position: absolute; bottom: 10vh; left: 32px;
-  font-size: 20px; color: #a8b8c8; max-width: 460px; text-align: left;
-  line-height: 1.6; min-height: 50px; transition: opacity 0.35s; opacity: 1;
-  padding: 12px 18px; border-left: 2px solid rgba(74,170,255,0.5);
-  background: rgba(20,28,42,0.5); border-radius: 0 6px 6px 0;
-  backdrop-filter: blur(4px);
-}
 
 /* 单位详情弹窗 */
 #unitModal {
@@ -882,7 +874,6 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
 <!-- 加载界面 -->
 <div id="loadingScreen">
   <img class="loadBg" id="loadBg" alt="">
-  <div class="loadTip" id="loadTip"></div>
   <div class="loadLine">
     <div class="loadBar"><div class="loadFill" id="loadFill"></div></div>
     <div class="loadPct" id="loadPct">0%</div>
@@ -1306,7 +1297,7 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
 
 <script>
 // ============ 配置 ============
-const MAP_RADIUS = 2;   // 主世界六边形半径：比原始(3)缩小一圈，最外层锁定为边界环
+const MAP_RADIUS = 1;   // 主世界六边形半径：再缩小一圈；可编辑区域为 ring 0~1，ring=MAP_RADIUS+1 锁定为边界环
 // 轴向(q,r)对应的六边形环号（到中心距离），用于判定是否在 MAP_RADIUS 内
 function hexRing(q, r) { return Math.max(Math.abs(q), Math.abs(r), Math.abs(-q - r)); }
 const POLY_SIZE = 36;       // 六边形基础尺寸（屏幕 px @ zoom=1），原 52 缩小使网格更紧凑
@@ -1904,7 +1895,7 @@ const MICRO_BUILD_CATS = [
   { id: 'nature',   name: '自然' },
 ];
 const MICRO_BUILD_ITEMS = [
-  { id: 'road_auto',     cat: 'road',   icon: 'assets/roads/5.png', name: '道路', autoRoad: true, costGold: 1 },
+  { id: 'road_auto',     cat: 'road',   icon: 'assets/roads/5.png', name: '道路', autoRoad: true, costGold: 0 },
   { id: 'road_t',        cat: 'road',   icon: 'assets/roads/1.png', name: 'T字路口', hidden: true },
   { id: 'road_cross',    cat: 'road',   icon: 'assets/roads/2.png', name: '十字路口', hidden: true },
   { id: 'road_corner',   cat: 'road', icon: 'assets/roads/4.png', name: '弯道', hidden: true },
@@ -6951,36 +6942,14 @@ function init() {
   // 加载动画：真实等待地形贴图全部解码完毕，再隐藏加载屏并启动渲染（预加载闸门，杜绝渐进 pop-in）
   const loadFill = document.getElementById('loadFill');
   const loadPct = document.getElementById('loadPct');
-  const loadTip = document.getElementById('loadTip');
   const loadBg = document.getElementById('loadBg');
   if (loadBg) loadBg.src = pickTransitionImage();
-  // 随机游戏小提示（兼作无声引导，循环轮换）
-  const TIPS = [
-    '💡 拖拽空白处可平移视角，滚轮缩放沙盘',
-    '💡 滚轮飞入地块，进入微观村落看看居民',
-    '💡 建造模式下可绘制地形，重塑世界地貌',
-    '💡 按住地块拖动，可与相邻地块交换地貌',
-    '💡 右上角时钟在自动流转昼夜，世界随时不同',
-    '💡 五层世界：星空 / 天空 / 大地 / 地下 / 地心',
-    '💡 你的建造会自动存档，下次回来世界仍在',
-    '💡 切换世界标签，俯瞰同一坐标的不同层级',
-    '💡 微观世界左键拖动可切换相邻地块',
-    '💡 微观世界滚轮缩放、右键拖拽平移'
-  ];
-  let tipIdx = Math.floor(Math.random() * TIPS.length);
-  loadTip.textContent = TIPS[tipIdx];
-  const tipTimer = setInterval(() => {
-    tipIdx = (tipIdx + 1) % TIPS.length;
-    loadTip.style.opacity = '0';
-    setTimeout(() => { loadTip.textContent = TIPS[tipIdx]; loadTip.style.opacity = '1'; }, 350);
-  }, 2800);
   const loadStart = Date.now();
   loadTerrainAssets(p => {
     const pct = Math.round(p * 100);
     loadFill.style.width = pct + '%';
     loadPct.textContent = pct + '%';
   }).then(() => {
-    clearInterval(tipTimer);
     loadFill.style.width = '100%';
     loadPct.textContent = '100%';
     // 加载屏至少停留 1 秒：确保主世界元素（地形贴图/居民/建筑）完全就绪再进入，快机也不闪屏