diff --git a/pages/assistant/index.vue b/pages/assistant/index.vue
index 32489bb..efef659 100644
--- a/pages/assistant/index.vue
+++ b/pages/assistant/index.vue
@@ -112,51 +112,86 @@
 						{{ item.label }}
 					</view>
 				</view>
-				<view v-if="activeChatMode === 'writing'" class="option-panel">
-					<text class="option-label">文体</text>
-					<view
-						v-for="item in writingDocTypeOptions"
-						:key="item.value"
-						class="option-chip"
-						:class="{ 'option-chip--active': writingDocType === item.value, 'option-chip--disabled': loading }"
-						@tap="pickWritingDocType(item.value)"
-					>{{ item.label }}</view>
-					<text class="option-label">字数</text>
-					<view
-						v-for="item in writingWordCountOptions"
-						:key="item.value"
-						class="option-chip"
-						:class="{ 'option-chip--active': writingWordCount === item.value, 'option-chip--disabled': loading }"
-						@tap="pickWritingWordCount(item.value)"
-					>{{ item.label }}</view>
-				</view>
+				<!--
+					参数面板：手机屏窄，**每组选项各占一行、单行横向滑动**，不换行堆叠。
+					换行版在写作模式下要占 4 行（文体 2 行 + 字数 2 行），把消息区挤掉小半屏。
+				-->
+				<scroll-view
+					v-if="activeChatMode === 'writing'"
+					scroll-x
+					:show-scrollbar="false"
+					class="option-scroll"
+				>
+					<view class="option-track">
+						<text class="option-label">文体</text>
+						<view
+							v-for="item in writingDocTypeOptions"
+							:key="item.value"
+							class="option-chip"
+							:class="{ 'option-chip--active': writingDocType === item.value, 'option-chip--disabled': loading }"
+							@tap="pickWritingDocType(item.value)"
+						>{{ item.label }}</view>
+					</view>
+				</scroll-view>
 
-				<view v-if="activeChatMode === 'image'" class="option-panel">
-					<text class="option-label">图片比例</text>
-					<view
-						v-for="item in imageRatioOptions"
-						:key="item.value"
-						class="option-chip"
-						:class="{ 'option-chip--active': imageRatio === item.value, 'option-chip--disabled': loading }"
-						@tap="pickImageRatio(item.value)"
-					>{{ item.label }}</view>
-				</view>
+				<scroll-view
+					v-if="activeChatMode === 'writing'"
+					scroll-x
+					:show-scrollbar="false"
+					class="option-scroll"
+				>
+					<view class="option-track">
+						<text class="option-label">字数</text>
+						<view
+							v-for="item in writingWordCountOptions"
+							:key="item.value"
+							class="option-chip"
+							:class="{ 'option-chip--active': writingWordCount === item.value, 'option-chip--disabled': loading }"
+							@tap="pickWritingWordCount(item.value)"
+						>{{ item.label }}</view>
+					</view>
+				</scroll-view>
 
-				<view v-if="activeChatMode === 'image'" class="option-panel">
-					<text class="option-label">参考素材</text>
-					<view
-						class="option-chip"
-						:class="{ 'option-chip--disabled': !canPickImageFiles }"
-						@tap="chooseImageFiles"
-					>{{ uploadingFiles ? '上传中...' : '添加附件' }}</view>
-					<text class="attach-hint">
-						最多 {{ IMAGE_FILE_LIMIT }} 个，支持图片 / 视频 / 音频 / 文档
-					</text>
-					<view v-if="imageFiles.length" class="attach-list">
-						<view v-for="(item, index) in imageFiles" :key="item.id" class="attach-item">
-							<text class="attach-name">{{ item.name }}</text>
-							<view class="attach-remove" @tap="removeImageFile(index)">移除</view>
-						</view>
+				<!-- 「添加附件」放在最左：它是要点的主操作，不能被滑到屏幕外 -->
+				<scroll-view
+					v-if="activeChatMode === 'image'"
+					scroll-x
+					:show-scrollbar="false"
+					class="option-scroll"
+				>
+					<view class="option-track">
+						<text class="option-label">参考素材</text>
+						<view
+							class="option-chip"
+							:class="{ 'option-chip--disabled': !canPickImageFiles }"
+							@tap="chooseImageFiles"
+						>{{ uploadingFiles ? '上传中...' : '添加附件' }}</view>
+						<text class="option-hint">最多 {{ IMAGE_FILE_LIMIT }} 个</text>
+					</view>
+				</scroll-view>
+
+				<scroll-view
+					v-if="activeChatMode === 'image'"
+					scroll-x
+					:show-scrollbar="false"
+					class="option-scroll"
+				>
+					<view class="option-track">
+						<text class="option-label">比例</text>
+						<view
+							v-for="item in imageRatioOptions"
+							:key="item.value"
+							class="option-chip"
+							:class="{ 'option-chip--active': imageRatio === item.value, 'option-chip--disabled': loading }"
+							@tap="pickImageRatio(item.value)"
+						>{{ item.label }}</view>
+					</view>
+				</scroll-view>
+
+				<view v-if="activeChatMode === 'image' && imageFiles.length" class="attach-list">
+					<view v-for="(item, index) in imageFiles" :key="item.id" class="attach-item">
+						<text class="attach-name">{{ item.name }}</text>
+						<view class="attach-remove" @tap="removeImageFile(index)">移除</view>
 					</view>
 				</view>
 
@@ -1103,7 +1138,8 @@
 					return
 				}
 				uni.showActionSheet({
-					itemList: ['从相册选择图片', '从聊天记录选择文件'],
+					// 支持的类型写在选项里（面板上那行 hint 只留「最多 5 个」，省横向空间）
+					itemList: ['从相册选择图片', '从聊天记录选文件（视频/音频/文档）'],
 					success: (result) => {
 						if (result.tapIndex === 0) {
 							this.pickLocalImages()
@@ -1784,8 +1820,8 @@
 	.mode-tags {
 		display: flex;
 		flex-wrap: wrap;
-		gap: 14rpx;
-		margin-bottom: 16rpx;
+		gap: 12rpx;
+		margin-bottom: 12rpx;
 	}
 
 	.mode-tag {
@@ -1807,29 +1843,44 @@
 		opacity: 0.6;
 	}
 
-	/* 写作 / 图片模式的参数面板（文体、字数、图片比例、参考素材） */
-	.option-panel {
-		display: flex;
-		flex-wrap: wrap;
+	/*
+		写作 / 图片模式的参数面板。
+		手机屏窄，选项一律**单行横向滑动**（scroll-view + 不换行的 inline-flex 轨道），
+		不换行堆叠 —— 换行版在写作模式下要占 4 行，把消息区挤掉小半屏。
+	*/
+	.option-scroll {
+		width: 100%;
+		white-space: nowrap;
+		margin-bottom: 12rpx;
+	}
+
+	.option-track {
+		display: inline-flex;
 		align-items: center;
-		gap: 12rpx;
-		margin-bottom: 16rpx;
+		gap: 10rpx;
 	}
 
 	.option-label {
-		margin-right: 2rpx;
+		flex-shrink: 0;
 		font-size: 22rpx;
 		color: #8a7f79;
 	}
 
+	.option-hint {
+		flex-shrink: 0;
+		font-size: 20rpx;
+		color: #a59a94;
+	}
+
 	.option-chip {
-		padding: 8rpx 20rpx;
+		flex-shrink: 0;
+		padding: 10rpx 18rpx;
 		border-radius: 999rpx;
 		border: 1rpx solid rgba(20, 150, 242, 0.18);
 		background: rgba(255, 255, 255, 0.9);
 		color: #1496f2;
 		font-size: 22rpx;
-		line-height: 1.4;
+		line-height: 1.3;
 	}
 
 	.option-chip--active {
@@ -1842,28 +1893,21 @@
 		opacity: 0.5;
 	}
 
-	.attach-hint {
-		width: 100%;
-		font-size: 20rpx;
-		line-height: 1.5;
-		color: #a59a94;
-	}
-
 	.attach-list {
-		width: 100%;
+		margin-bottom: 12rpx;
 	}
 
 	.attach-item {
 		display: flex;
 		align-items: center;
 		gap: 12rpx;
-		padding: 10rpx 16rpx;
+		padding: 8rpx 14rpx;
 		border-radius: 16rpx;
 		background: rgba(20, 150, 242, 0.06);
 	}
 
 	.attach-item + .attach-item {
-		margin-top: 10rpx;
+		margin-top: 8rpx;
 	}
 
 	.attach-name {