diff --git a/src/components/OrderBook.vue b/src/components/OrderBook.vue
index d1c8667..2d10881 100644
--- a/src/components/OrderBook.vue
+++ b/src/components/OrderBook.vue
@@ -15,10 +15,6 @@
         <v-tab value="up" class="trade-tab">Trade Up</v-tab>
         <v-tab value="down" class="trade-tab">Trade Down</v-tab>
       </v-tabs>
-      <div class="maker-rebate">
-        <span class="maker-rebate-text">Maker Rebate</span>
-        <v-icon size="14">mdi-refresh</v-icon>
-      </div>
     </div>
 
     <!-- Order Book Content -->
@@ -270,19 +266,6 @@ const maxBidsTotal = computed(() => {
   border: none;
 }
 
-.maker-rebate {
-  margin-left: auto;
-  display: flex;
-  align-items: center;
-  gap: 4px;
-}
-
-.maker-rebate-text {
-  font-size: 14px;
-  color: #ff9800;
-  font-weight: 500;
-}
-
 .order-book-content {
   display: flex;
   padding: 12px 16px;
diff --git a/src/components/TradeComponent.vue b/src/components/TradeComponent.vue
index 63bf52b..5434497 100644
--- a/src/components/TradeComponent.vue
+++ b/src/components/TradeComponent.vue
@@ -1,5 +1,6 @@
 <template>
-  <v-card class="trade-component">
+  <!-- 桌面端：完整交易卡片 -->
+  <v-card v-if="!mobile" class="trade-component">
     <!-- Header -->
     <div class="header">
       <v-tabs v-model="activeTab" class="buy-sell-tabs minimal-tabs" density="compact">
@@ -21,24 +22,12 @@
             <v-list-item-title>Limit</v-list-item-title>
           </v-list-item>
           <v-divider></v-divider>
-          <v-menu append :location="'end'">
-            <template v-slot:activator="{ props }">
-              <v-list-item v-bind="props" @click.stop>
-                <v-list-item-title>More</v-list-item-title>
-                <template v-slot:append>
-                  <v-icon icon="mdi-chevron-right" size="x-small"></v-icon>
-                </template>
-              </v-list-item>
-            </template>
-            <v-list>
-              <v-list-item>
-                <v-list-item-title>Merge</v-list-item-title>
-              </v-list-item>
-              <v-list-item>
-                <v-list-item-title>Split</v-list-item-title>
-              </v-list-item>
-            </v-list>
-          </v-menu>
+          <v-list-item>
+            <v-list-item-title>Merge</v-list-item-title>
+          </v-list-item>
+          <v-list-item>
+            <v-list-item-title>Split</v-list-item-title>
+          </v-list-item>
         </v-list>
       </v-menu>
     </div>
@@ -96,7 +85,7 @@
         </div>
 
         <!-- Action Button -->
-        <v-btn class="action-btn">
+        <v-btn class="action-btn" @click="submitOrder">
           {{ actionButtonText }}
         </v-btn>
       </template>
@@ -279,15 +268,180 @@
       </div>
 
       <!-- Action Button -->
-      <v-btn class="action-btn">
+      <v-btn class="action-btn" @click="submitOrder">
         {{ actionButtonText }}
       </v-btn>
     </template>
   </v-card>
+
+  <!-- 移动端：底部紧凑栏 + 底部弹出层 + 三点菜单 -->
+  <template v-else>
+    <div class="mobile-trade-bar-spacer" aria-hidden="true"></div>
+    <div class="mobile-trade-bar">
+      <v-btn
+        class="mobile-bar-btn mobile-bar-yes"
+        variant="flat"
+        color="success"
+        rounded="pill"
+        block
+        @click="openSheet('yes')"
+      >
+        Buy Yes {{ yesPriceCents }}¢
+      </v-btn>
+      <v-btn
+        class="mobile-bar-btn mobile-bar-no"
+        variant="flat"
+        color="error"
+        rounded="pill"
+        block
+        @click="openSheet('no')"
+      >
+        Buy No {{ noPriceCents }}¢
+      </v-btn>
+    </div>
+
+    <v-bottom-sheet v-model="sheetOpen" class="trade-sheet">
+      <v-sheet class="trade-sheet-paper" rounded="lg">
+        <div class="trade-component trade-sheet-inner">
+          <div class="header">
+            <v-tabs v-model="activeTab" class="buy-sell-tabs minimal-tabs" density="compact">
+              <v-tab value="buy" class="minimal-tab">Buy</v-tab>
+              <v-tab value="sell" class="minimal-tab">Sell</v-tab>
+            </v-tabs>
+            <v-menu class="limit-dropdown hide-in-mobile-sheet">
+              <template v-slot:activator="{ props: limitProps, isActive }">
+                <v-btn v-bind="limitProps" class="limit-btn" text end>
+                  {{ limitType }}
+                  <v-icon right>{{ isActive ? 'mdi-chevron-up' : 'mdi-chevron-down' }}</v-icon>
+                </v-btn>
+              </template>
+              <v-list>
+                <v-list-item @click="limitType = 'Market'"><v-list-item-title>Market</v-list-item-title></v-list-item>
+                <v-list-item @click="limitType = 'Limit'"><v-list-item-title>Limit</v-list-item-title></v-list-item>
+                <v-divider></v-divider>
+                <v-list-item><v-list-item-title>Merge</v-list-item-title></v-list-item>
+                <v-list-item><v-list-item-title>Split</v-list-item-title></v-list-item>
+              </v-list>
+            </v-menu>
+          </div>
+          <template v-if="isMarketMode">
+            <template v-if="balance > 0">
+              <div class="price-options hide-in-mobile-sheet">
+                <v-btn class="yes-btn" :class="{ active: selectedOption === 'yes' }" text @click="handleOptionChange('yes')">Yes {{ selectedOption === 'yes' ? '19¢' : '18¢' }}</v-btn>
+                <v-btn class="no-btn" :class="{ active: selectedOption === 'no' }" text @click="handleOptionChange('no')">No {{ selectedOption === 'no' ? '82¢' : '81¢' }}</v-btn>
+              </div>
+              <div class="total-section">
+                <template v-if="activeTab === 'buy'">
+                  <div class="total-row"><span class="label">Total</span><span class="total-value">${{ totalPrice }}</span></div>
+                  <div class="total-row"><span class="label">To win</span><span class="to-win-value"><v-icon size="16" color="green">mdi-currency-usd</v-icon> $20</span></div>
+                </template>
+                <template v-else>
+                  <div class="total-row"><span class="label">You'll receive</span><span class="to-win-value"><v-icon size="16" color="green">mdi-currency-usd</v-icon> ${{ totalPrice }}</span></div>
+                </template>
+              </div>
+              <v-btn class="action-btn" @click="submitOrder">{{ actionButtonText }}</v-btn>
+            </template>
+            <template v-else>
+              <div class="price-options hide-in-mobile-sheet">
+                <v-btn class="yes-btn" :class="{ active: selectedOption === 'yes' }" text @click="handleOptionChange('yes')">Yes {{ selectedOption === 'yes' ? '19¢' : '18¢' }}</v-btn>
+                <v-btn class="no-btn" :class="{ active: selectedOption === 'no' }" text @click="handleOptionChange('no')">No {{ selectedOption === 'no' ? '82¢' : '81¢' }}</v-btn>
+              </div>
+              <div class="input-group">
+                <div class="amount-header">
+                  <div><span class="label amount-label">Amount</span><span class="balance-label">Balance ${{ balance.toFixed(2) }}</span></div>
+                  <div class="amount-value">${{ amount.toFixed(2) }}</div>
+                </div>
+                <div class="amount-buttons">
+                  <v-btn class="amount-btn" @click="adjustAmount(1)">+$1</v-btn>
+                  <v-btn class="amount-btn" @click="adjustAmount(20)">+$20</v-btn>
+                  <v-btn class="amount-btn" @click="adjustAmount(100)">+$100</v-btn>
+                  <v-btn class="amount-btn" @click="setMaxAmount">Max</v-btn>
+                </div>
+              </div>
+              <v-btn class="deposit-btn" @click="deposit">Deposit</v-btn>
+            </template>
+          </template>
+          <template v-else>
+            <div class="price-options hide-in-mobile-sheet">
+              <v-btn class="yes-btn" :class="{ active: selectedOption === 'yes' }" text @click="handleOptionChange('yes')">Yes {{ selectedOption === 'yes' ? '19¢' : '18¢' }}</v-btn>
+              <v-btn class="no-btn" :class="{ active: selectedOption === 'no' }" text @click="handleOptionChange('no')">No {{ selectedOption === 'no' ? '82¢' : '81¢' }}</v-btn>
+            </div>
+            <div class="input-group limit-price-group">
+              <div class="limit-price-header">
+                <span class="label">Limit Price</span>
+                <div class="price-input">
+                  <v-btn class="adjust-btn" icon @click="decreasePrice"><v-icon>mdi-minus</v-icon></v-btn>
+                  <v-text-field v-model.number="limitPrice" type="number" min="0.01" step="0.01" class="price-input-field" hide-details density="compact"></v-text-field>
+                  <v-btn class="adjust-btn" icon @click="increasePrice"><v-icon>mdi-plus</v-icon></v-btn>
+                </div>
+              </div>
+            </div>
+            <div class="input-group shares-group">
+              <div class="shares-header">
+                <span class="label">Shares</span>
+                <div class="shares-input">
+                  <v-text-field v-model.number="shares" type="number" min="0" class="shares-input-field" hide-details density="compact"></v-text-field>
+                </div>
+              </div>
+              <div v-if="activeTab === 'buy'" class="shares-buttons">
+                <v-btn class="share-btn" @click="adjustShares(-100)">-100</v-btn>
+                <v-btn class="share-btn" @click="adjustShares(-10)">-10</v-btn>
+                <v-btn class="share-btn" @click="adjustShares(10)">+10</v-btn>
+                <v-btn class="share-btn" @click="adjustShares(100)">+100</v-btn>
+              </div>
+              <div v-else class="shares-buttons">
+                <v-btn class="share-btn" @click="setSharesPercentage(25)">25%</v-btn>
+                <v-btn class="share-btn" @click="setSharesPercentage(50)">50%</v-btn>
+                <v-btn class="share-btn" @click="setSharesPercentage(100)">Max</v-btn>
+              </div>
+            </div>
+            <div class="input-group expiration-group">
+              <div class="expiration-header">
+                <span class="label">Set expiration</span>
+                <v-switch v-model="expirationEnabled" class="expiration-switch" hide-details color="primary"></v-switch>
+              </div>
+              <v-select
+                v-if="expirationEnabled"
+                v-model="expirationTime"
+                :items="expirationOptions"
+                class="expiration-select"
+                hide-details
+                density="compact"
+              ></v-select>
+            </div>
+            <div class="total-section">
+              <template v-if="activeTab === 'buy'">
+                <div class="total-row"><span class="label">Total</span><span class="total-value">${{ totalPrice }}</span></div>
+                <div class="total-row"><span class="label">To win</span><span class="to-win-value"><v-icon size="16" color="green">mdi-currency-usd</v-icon> $20</span></div>
+              </template>
+              <template v-else>
+                <div class="total-row"><span class="label">You'll receive</span><span class="to-win-value"><v-icon size="16" color="green">mdi-currency-usd</v-icon> ${{ totalPrice }}</span></div>
+              </template>
+            </div>
+            <v-btn class="action-btn" @click="submitOrder">{{ actionButtonText }}</v-btn>
+          </template>
+        </div>
+      </v-sheet>
+    </v-bottom-sheet>
+  </template>
 </template>
 
 <script setup lang="ts">
 import { ref, computed } from 'vue'
+import { useDisplay } from 'vuetify'
+
+const { mobile } = useDisplay()
+
+// 移动端：底部栏与弹出层
+const sheetOpen = ref(false)
+
+const yesPriceCents = computed(() => 19)
+const noPriceCents = computed(() => 82)
+
+function openSheet(option: 'yes' | 'no') {
+  handleOptionChange(option)
+  sheetOpen.value = true
+}
 
 // State
 const activeTab = ref('buy')
@@ -305,7 +459,17 @@ const amount = ref(0) // Market mode amount
 const balance = ref(0) // Market mode balance
 
 // Emits
-const emit = defineEmits(['optionChange'])
+const emit = defineEmits<{
+  optionChange: [option: 'yes' | 'no']
+  submit: [payload: {
+    side: 'buy' | 'sell'
+    option: 'yes' | 'no'
+    limitPrice: number
+    shares: number
+    expirationEnabled: boolean
+    expirationTime: string
+  }]
+}>()
 
 // Computed properties
 const currentPrice = computed(() => {
@@ -367,6 +531,18 @@ const deposit = () => {
   console.log('Depositing amount:', amount.value)
   // 实际应用中，这里应该调用存款API
 }
+
+// 提交订单（含 Set expiration）
+function submitOrder() {
+  emit('submit', {
+    side: activeTab.value as 'buy' | 'sell',
+    option: selectedOption.value,
+    limitPrice: limitPrice.value,
+    shares: shares.value,
+    expirationEnabled: expirationEnabled.value,
+    expirationTime: expirationTime.value,
+  })
+}
 </script>
 
 <style scoped>
@@ -695,6 +871,68 @@ const deposit = () => {
   text-transform: none;
 }
 
+/* 移动端底部交易栏（红框样式） */
+.mobile-trade-bar-spacer {
+  height: 72px;
+}
+
+.mobile-trade-bar {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  z-index: 100;
+  display: flex;
+  align-items: stretch;
+  gap: 8px;
+  width: 100%;
+  padding: 12px 16px;
+  padding-bottom: max(12px, env(safe-area-inset-bottom));
+  background: #fff;
+  border-top: 1px solid #eee;
+}
+
+.mobile-bar-btn {
+  border: none;
+  border-radius: 9999px;
+  font-size: 15px;
+  font-weight: 600;
+  cursor: pointer;
+  flex-shrink: 0;
+}
+
+.mobile-bar-yes {
+  flex: 1;
+  min-width: 0;
+  background: #22c55e;
+  color: #fff;
+  padding: 14px 16px;
+}
+
+.mobile-bar-no {
+  flex: 1;
+  min-width: 0;
+  background: #ef4444;
+  color: #fff;
+  padding: 14px 16px;
+}
+
+.trade-sheet-paper {
+  padding: 0;
+  max-height: 85vh;
+  overflow-y: auto;
+}
+
+.trade-sheet-inner {
+  box-shadow: none;
+  max-width: 100%;
+}
+
+/* 手机端底部弹层内不显示：Limit 下拉、Yes/No 按钮 */
+.trade-sheet-inner .hide-in-mobile-sheet {
+  display: none !important;
+}
+
 /* 响应式调整 - 小屏幕设备 */
 @media (max-width: 600px) {
   .header {
diff --git a/src/views/TradeDetail.vue b/src/views/TradeDetail.vue
index 295f30c..1c01c93 100644
--- a/src/views/TradeDetail.vue
+++ b/src/views/TradeDetail.vue
@@ -1,7 +1,8 @@
 <template>
   <v-container class="trade-detail-container">
-    <v-row>
-      <v-col cols="12">
+    <v-row align="stretch" class="trade-detail-row">
+      <!-- 左侧：分时图 + 订单簿（宽度弹性） -->
+      <v-col cols="12" class="chart-col">
         <!-- 分时图卡片（Polymarket 样式） -->
         <v-card class="chart-card polymarket-chart" elevation="0" rounded="lg">
           <!-- 顶部：标题、当前概率、Past / 日期 -->
@@ -45,6 +46,13 @@
           <OrderBook />
         </v-card>
       </v-col>
+
+      <!-- 右侧：交易组件（固定宽度） -->
+      <v-col cols="12" class="trade-col">
+        <div class="trade-sidebar">
+          <TradeComponent />
+        </div>
+      </v-col>
     </v-row>
   </v-container>
 </template>
@@ -55,6 +63,7 @@ import { useRoute } from 'vue-router'
 import * as echarts from 'echarts'
 import type { ECharts } from 'echarts'
 import OrderBook from '../components/OrderBook.vue'
+import TradeComponent from '../components/TradeComponent.vue'
 
 /**
  * 分时图服务端推送数据格式约定
@@ -543,6 +552,58 @@ onUnmounted(() => {
   border: 1px solid #e7e7e7;
 }
 
+/* 左右布局：左侧弹性，右侧固定 */
+.trade-detail-row {
+  display: flex;
+  flex-wrap: wrap;
+}
+
+.chart-col {
+  flex: 1 1 0%;
+  min-width: 0;
+}
+
+.trade-col {
+  margin-top: 32px;
+}
+
+.trade-sidebar {
+  position: sticky;
+  top: 24px;
+  width: 400px;
+  max-width: 100%;
+  flex-shrink: 0;
+}
+
+@media (min-width: 960px) {
+  .trade-detail-row {
+    flex-wrap: nowrap;
+  }
+
+  .chart-col {
+    flex: 1 1 0% !important;
+    min-width: 0;
+    max-width: none !important;
+  }
+
+  .trade-col {
+    flex: 0 0 400px !important;
+    max-width: 400px !important;
+    margin-top: 32px;
+  }
+
+  .trade-sidebar {
+    width: 400px;
+  }
+}
+
+@media (max-width: 959px) {
+  .trade-sidebar {
+    position: static;
+    width: 100%;
+  }
+}
+
 /* Responsive adjustments */
 @media (max-width: 599px) {
   .trade-detail-container {