708 lines
16 KiB
Vue
708 lines
16 KiB
Vue
<template>
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<div ref="chatListRef" class="chat-list" @scroll.passive="handleScroll">
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<!-- 顶部：有更多历史时上滑加载更早记录 -->
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<div v-if="hasMore || loadingMore" class="load-more-bar">
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<span v-if="loadingMore" class="load-more-spinner"></span>
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{{ loadingMore ? '加载中…' : '继续上滑，加载更早的记录' }}
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</div>
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<div
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v-for="msg in messages"
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:key="msg.id"
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class="message-row"
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:class="{ 'is-user': msg.isUser, 'is-error': !msg.isUser && isErrorMsg(msg) }"
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>
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<div class="bubble-wrap">
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<div class="bubble">
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<template v-if="msg.isUser">{{ msg.content }}</template>
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<template v-else>
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<!-- 初始加载动画 -->
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<template v-if="msg.loading && !msg.thinking && !msg.content">
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<span class="loading-text">思考中</span><span class="loading-dots"><i></i><i></i><i></i></span>
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</template>
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<!-- 思考区：DeepSeek 风格折叠块 -->
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<div v-if="msg.thinking" class="thinking-block">
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<button class="thinking-toggle" type="button" @click="toggleThinking(msg)">
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<span class="thinking-icon">🧠</span>
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<span class="thinking-title">{{ thinkingTitle(msg) }}</span>
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<span class="thinking-arrow" :class="{ collapsed: !isThinkingExpanded(msg) }">▾</span>
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</button>
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<div v-if="isThinkingExpanded(msg)" class="thinking-content">
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<div class="thinking-text">{{ msg.thinking }}</div>
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</div>
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</div>
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<!-- 回答区：Markdown 渲染 -->
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<div
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v-if="msg.content"
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class="answer-block"
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v-html="renderAnswer(msg.content)"
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@click="handleAnswerClick"
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></div>
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<!-- 失败重试 -->
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<button v-if="isErrorMsg(msg)" type="button" class="retry-btn" @click="emit('retry', msg)">
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<span class="retry-icon">↻</span> 重新生成
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</button>
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</template>
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</div>
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<!-- AI 消息操作栏（hover 显示） -->
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<div v-if="!msg.isUser && msg.content && !isErrorMsg(msg)" class="msg-actions">
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<button class="msg-action" title="重新生成" @click="emit('regenerate', msg)">
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<el-icon><RefreshRight /></el-icon>
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</button>
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<button class="msg-action" title="复制回答" @click="copyText(msg.content)">
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<el-icon><DocumentCopy /></el-icon>
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</button>
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<button v-if="msg.recordId" class="msg-action is-danger" title="删除对话" @click="emit('delete', msg)">
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<el-icon><Delete /></el-icon>
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</button>
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</div>
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<!-- 用户消息操作栏（hover 显示，仅删除） -->
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<div v-if="msg.isUser && msg.recordId" class="msg-actions">
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<button class="msg-action is-danger" title="删除对话" @click="emit('delete', msg)">
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<el-icon><Delete /></el-icon>
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</button>
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</div>
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<div class="time">{{ msg.time }}</div>
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</div>
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</div>
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</div>
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</template>
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<script setup lang="ts">
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import { nextTick, onMounted, reactive, ref, watch } from 'vue';
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import { ElMessage } from 'element-plus';
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import { Delete, DocumentCopy, RefreshRight } from '@element-plus/icons-vue';
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import 'highlight.js/styles/github-dark.css';
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import { renderMarkdown } from '../utils/markdown';
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interface ChatMessage {
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id: string;
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content: string;
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time: string;
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isUser: boolean;
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loading?: boolean;
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thinking?: string;
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thinkingSeconds?: number;
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retryQuestion?: string;
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// 后端记录 id / 类型（来自 session/get 的每条结果），存在时才显示删除按钮
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recordId?: string;
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recordType?: string;
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}
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interface Emits {
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(e: 'retry', msg: ChatMessage): void;
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(e: 'regenerate', msg: ChatMessage): void;
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(e: 'delete', msg: ChatMessage): void;
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(e: 'load-more'): void;
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}
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interface Props {
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messages: ChatMessage[];
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hasMore?: boolean;
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loadingMore?: boolean;
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}
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const props = withDefaults(defineProps<Props>(), {
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hasMore: false,
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loadingMore: false,
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});
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const emit = defineEmits<Emits>();
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const chatListRef = ref<HTMLElement | null>(null);
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const isErrorMsg = (msg: ChatMessage): boolean => !msg.isUser && String(msg.content || '').startsWith('❌');
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// 思考区折叠：未手动操作时，流式中展开、完成（出现答案）后自动收起（DeepSeek 形态）
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const thinkingExpanded = reactive<Record<string, boolean>>({});
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const isThinkingExpanded = (msg: ChatMessage): boolean =>
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msg.id in thinkingExpanded ? thinkingExpanded[msg.id] : !msg.content;
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const toggleThinking = (msg: ChatMessage) => {
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thinkingExpanded[msg.id] = !isThinkingExpanded(msg);
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};
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// Markdown 渲染缓存（content 在作答完成后固定，避免重复解析）
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const mdCache = new Map<string, string>();
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const renderAnswer = (content: string): string => {
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if (!mdCache.has(content)) mdCache.set(content, renderMarkdown(content));
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return mdCache.get(content)!;
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};
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// 复制文本（剪贴板 API + 兼容回退）
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const copyText = async (text: string) => {
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try {
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await navigator.clipboard.writeText(text);
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} catch {
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const ta = document.createElement('textarea');
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ta.value = text;
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ta.style.position = 'fixed';
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ta.style.opacity = '0';
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document.body.appendChild(ta);
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ta.select();
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document.execCommand('copy');
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document.body.removeChild(ta);
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}
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ElMessage.success('已复制');
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};
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// 代码块复制（事件委托：点击渲染出的 .code-copy-btn）
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const handleAnswerClick = (e: MouseEvent) => {
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const el = e.target as HTMLElement;
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const btn = el.closest('.code-copy-btn');
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if (!btn) return;
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const code = btn.closest('.code-wrapper')?.querySelector('code');
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if (code) copyText(code.textContent || '');
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};
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// 思考区折叠标题：完成（有答案）显示"已深度思考（用时 X 秒）"，流式中显示"思考中…"
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const thinkingTitle = (msg: ChatMessage): string => {
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if (!msg.content) return '思考中…';
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return msg.thinkingSeconds != null ? `已深度思考（用时 ${msg.thinkingSeconds} 秒）` : '已深度思考';
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};
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// autoLoading 标记本次 load-more 是否由"自动续载"触发：自动续载不保持位置（落在最新），用户上滑保持视口
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let autoLoading = false;
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// 消息新增或内容变化时自动滚动到底部；顶部加载更多期间不滚底。
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// immediate：切换会话时 ChatList 会重建，挂载即定位到最新消息，避免停留在顶部旧消息。
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// 首屏不满视口时自动续载更早记录，直到填满视口或没有更多（保证"上滑加载"入口始终可见）
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watch(
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() => props.messages.map((m) => `${m.id}|${m.content}|${m.thinking || ''}|${m.loading ? 1 : 0}`).join('\n'),
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() => {
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if (props.loadingMore) return;
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nextTick(() => {
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const el = chatListRef.value;
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if (!el) return;
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el.scrollTop = el.scrollHeight;
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if (props.messages.length > 0 && props.hasMore && el.scrollHeight <= el.clientHeight) {
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autoLoading = true;
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emit('load-more');
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}
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});
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},
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{ immediate: true }
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);
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// 顶部加载更多：开始加载时记录容器高度，完成后把滚动位置补回新增高度，保持视口内消息不跳动。
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// 该 watch 注册在 messages watch 之后，其 nextTick 回调后执行，可覆盖同批的"滚到底"。
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const prevScrollHeight = ref(0);
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watch(
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() => props.loadingMore,
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(loading, prev) => {
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if (loading && !prev) {
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const el = chatListRef.value;
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prevScrollHeight.value = autoLoading ? 0 : el && el.scrollHeight > el.clientHeight ? el.scrollHeight : 0;
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} else if (!loading && prev) {
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nextTick(() => {
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const el = chatListRef.value;
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if (!el) return;
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if (prevScrollHeight.value) {
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// 用户主动上滑加载更早：滚动位置补回新增高度，保持视口内消息不跳动
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el.scrollTop = el.scrollHeight - prevScrollHeight.value;
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prevScrollHeight.value = 0;
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} else if (autoLoading) {
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// 自动续载：加载期间滚底 watch 被 loadingMore 拦截（同批 loadingMore 仍为 true 先 flush），
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// 恢复时须把 scrollTop 设回底部定位到最新消息；若仍不满屏则继续自动续载
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el.scrollTop = el.scrollHeight;
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if (props.messages.length > 0 && props.hasMore && el.scrollHeight <= el.clientHeight) {
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emit('load-more');
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} else {
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autoLoading = false;
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}
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}
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});
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}
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}
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);
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// 滚动到顶部时触发加载更早记录（防重入由父组件 sessionLoadingMore 保证）
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const handleScroll = (e: Event) => {
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// 程序设置 scrollTop 触发的 scroll 事件（isTrusted=false）不参与交互判断：
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// 自动续载/滚底时 scrollTop 不满屏被钳制为 0，会被误判为"用户上滑"而清空 autoLoading、破坏自动定位到最新
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if (!e.isTrusted) return;
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const el = chatListRef.value;
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if (!el || !props.hasMore || props.loadingMore) return;
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if (el.scrollTop <= 4) {
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autoLoading = false;
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emit('load-more');
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}
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};
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onMounted(() => {
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const el = chatListRef.value;
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// 挂载即定位到最新消息。immediate watch 的 nextTick 在 Transition 期间 DOM 未插入时执行（el 为 null）会失效，
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// 这里在 DOM 已插入、内容已渲染（sh 已确定）后滚底；requestAnimationFrame 确保过渡与布局完成
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requestAnimationFrame(() => {
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if (el) el.scrollTop = el.scrollHeight;
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});
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});
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</script>
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<style scoped lang="scss">
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.chat-list {
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height: 100%;
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overflow-y: auto;
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display: flex;
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flex-direction: column;
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justify-content: flex-start;
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padding: 8px 0 16px;
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scrollbar-width: none;
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&::-webkit-scrollbar { display: none; }
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}
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/* 顶部：加载更早记录提示条 */
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.load-more-bar {
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display: flex;
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align-items: center;
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justify-content: center;
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gap: 6px;
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flex-shrink: 0;
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font-size: 11px;
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color: #cbd5e1;
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padding: 4px 0 10px;
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}
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.load-more-spinner {
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width: 12px;
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height: 12px;
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border: 2px solid #e2e8f0;
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border-top-color: #94a3b8;
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border-radius: 50%;
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animation: load-more-rotate 0.7s linear infinite;
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}
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@keyframes load-more-rotate {
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to { transform: rotate(360deg); }
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}
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.message-row {
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display: flex;
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align-items: flex-start;
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gap: 12px;
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max-width: 100%;
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&.is-user {
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justify-content: flex-end;
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}
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}
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/* 节奏化消息间距：AI↔AI 24，用户↔AI 16 */
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.message-row + .message-row {
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margin-top: 16px;
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}
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.message-row:not(.is-user) + .message-row:not(.is-user) {
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margin-top: 24px;
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}
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.bubble-wrap {
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display: flex;
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flex-direction: column;
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gap: 4px;
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max-width: 100%;
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align-items: flex-start;
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.message-row.is-user & {
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align-items: flex-end;
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/* 明确宽度基准：打断 fit-content 与百分比 max-width 的循环，避免气泡被压得过窄导致文字竖排 */
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width: 100%;
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}
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}
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.bubble {
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font-size: 15px;
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line-height: 1.7;
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padding: 0;
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border-radius: 0;
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word-break: break-word;
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color: #1f2328;
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background: transparent;
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border: none;
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box-shadow: none;
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/* AI 消息：无背景卡片，纯文本左对齐（DeepSeek 式） */
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.message-row:not(.is-user) & {
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width: 100%;
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max-width: 880px;
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}
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.message-row.is-user & {
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width: fit-content;
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max-width: 72%;
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padding: 10px 16px;
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border-radius: 18px 18px 6px 18px;
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background: #e8ecff;
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color: #1f2328;
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box-shadow: none;
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}
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.message-row.is-error & {
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color: #dc2626;
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}
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}
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/* AI 消息操作栏（hover 显示） */
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.msg-actions {
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display: flex;
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gap: 4px;
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opacity: 0;
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transition: opacity 0.15s;
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.message-row:hover & {
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opacity: 1;
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}
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/* 用户消息在右侧，操作栏右对齐 */
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.message-row.is-user & {
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align-self: flex-end;
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}
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}
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.msg-action {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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width: 30px;
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height: 30px;
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border: none;
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border-radius: 8px;
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background: transparent;
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color: #9ca3af;
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cursor: pointer;
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transition: background 0.15s, color 0.15s;
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&:hover {
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background: #eef0f3;
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color: #4b5563;
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}
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&.is-danger:hover {
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background: #fef2f2;
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color: #dc2626;
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}
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.el-icon {
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font-size: 14px;
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}
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}
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/* 失败重试 */
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.retry-btn {
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display: inline-flex;
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align-items: center;
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gap: 5px;
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margin-top: 8px;
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padding: 7px 14px;
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border: 1px solid #fecaca;
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border-radius: 10px;
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background: #fef2f2;
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color: #dc2626;
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font-size: 12px;
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font-weight: 500;
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cursor: pointer;
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transition: all 0.15s;
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&:hover {
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background: #fee2e2;
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border-color: #fca5a5;
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}
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.retry-icon {
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font-size: 14px;
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line-height: 1;
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}
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}
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/* 思考区：DeepSeek 风格折叠块 */
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.thinking-block {
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margin: 0 0 12px;
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background: #f5f6f7;
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border: 1px solid #eef0f3;
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border-radius: 12px;
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overflow: hidden;
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max-width: 880px;
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}
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.thinking-toggle {
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display: flex;
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align-items: center;
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gap: 6px;
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width: 100%;
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padding: 9px 14px;
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border: none;
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background: transparent;
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font-size: 13px;
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font-weight: 500;
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color: #8b8b98;
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cursor: pointer;
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text-align: left;
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user-select: none;
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transition: color 0.15s;
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&:hover {
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color: #6b7280;
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}
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}
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.thinking-icon {
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font-size: 14px;
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line-height: 1;
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}
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.thinking-title {
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font-size: 13px;
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}
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.thinking-arrow {
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margin-left: auto;
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display: inline-flex;
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font-size: 11px;
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line-height: 1;
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opacity: 0.7;
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transition: transform 0.2s;
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&.collapsed {
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transform: rotate(-90deg);
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}
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}
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.thinking-content {
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padding: 0 14px 14px;
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animation: thinking-fade-in 0.2s ease;
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}
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.thinking-text {
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font-size: 13px;
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line-height: 1.7;
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color: #9a9aab;
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font-style: italic;
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white-space: pre-wrap;
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word-break: break-word;
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border-top: 1px solid #eef0f3;
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padding-top: 10px;
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}
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|
||
@keyframes thinking-fade-in {
|
||
from {
|
||
opacity: 0;
|
||
transform: translateY(-2px);
|
||
}
|
||
to {
|
||
opacity: 1;
|
||
transform: translateY(0);
|
||
}
|
||
}
|
||
|
||
/* 回答区：Markdown 渲染（DeepSeek 风格排版） */
|
||
.answer-block {
|
||
white-space: normal;
|
||
line-height: 1.7;
|
||
font-size: 15px;
|
||
word-break: break-word;
|
||
max-width: 880px;
|
||
|
||
& > :first-child {
|
||
margin-top: 0;
|
||
}
|
||
& > :last-child {
|
||
margin-bottom: 0;
|
||
}
|
||
|
||
:deep(p) {
|
||
margin: 0 0 12px;
|
||
}
|
||
|
||
:deep(h1),
|
||
:deep(h2),
|
||
:deep(h3),
|
||
:deep(h4),
|
||
:deep(h5),
|
||
:deep(h6) {
|
||
font-weight: 600;
|
||
line-height: 1.4;
|
||
margin: 20px 0 10px;
|
||
color: #1f2328;
|
||
}
|
||
|
||
:deep(h1) {
|
||
font-size: 20px;
|
||
border-bottom: 1px solid #eaecef;
|
||
padding-bottom: 8px;
|
||
}
|
||
|
||
:deep(h2) {
|
||
font-size: 18px;
|
||
}
|
||
|
||
:deep(h3) {
|
||
font-size: 16px;
|
||
}
|
||
|
||
:deep(h4),
|
||
:deep(h5),
|
||
:deep(h6) {
|
||
font-size: 15px;
|
||
}
|
||
|
||
:deep(ul),
|
||
:deep(ol) {
|
||
margin: 0 0 12px;
|
||
padding-left: 22px;
|
||
}
|
||
|
||
:deep(li) {
|
||
margin: 3px 0;
|
||
}
|
||
|
||
:deep(li > ul),
|
||
:deep(li > ol) {
|
||
margin-bottom: 0;
|
||
}
|
||
|
||
:deep(blockquote) {
|
||
margin: 0 0 12px;
|
||
padding: 6px 14px;
|
||
border-left: 4px solid #e0e0e0;
|
||
color: #6a737d;
|
||
background: #fafafa;
|
||
border-radius: 0 8px 8px 0;
|
||
}
|
||
|
||
:deep(code) {
|
||
font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
|
||
font-size: 13px;
|
||
padding: 2px 6px;
|
||
border-radius: 4px;
|
||
background: #f2f3f5;
|
||
color: #c7254e;
|
||
}
|
||
|
||
:deep(.code-wrapper) {
|
||
position: relative;
|
||
margin: 0 0 14px;
|
||
|
||
&:hover .code-copy-btn {
|
||
opacity: 1;
|
||
}
|
||
}
|
||
|
||
:deep(.code-copy-btn) {
|
||
position: absolute;
|
||
top: 8px;
|
||
right: 8px;
|
||
z-index: 2;
|
||
padding: 2px 8px;
|
||
border: 1px solid rgba(255, 255, 255, 0.2);
|
||
border-radius: 6px;
|
||
background: rgba(255, 255, 255, 0.08);
|
||
color: #8b949e;
|
||
font-size: 12px;
|
||
cursor: pointer;
|
||
opacity: 0;
|
||
transition: opacity 0.15s, background 0.15s;
|
||
|
||
&:hover {
|
||
background: rgba(255, 255, 255, 0.16);
|
||
color: #c9d1d9;
|
||
}
|
||
}
|
||
|
||
:deep(pre) {
|
||
margin: 0;
|
||
padding: 12px 14px;
|
||
border-radius: 10px;
|
||
background: #0d1117;
|
||
overflow-x: auto;
|
||
line-height: 1.6;
|
||
|
||
code {
|
||
display: block;
|
||
padding: 0;
|
||
background: transparent;
|
||
color: inherit;
|
||
font-size: 13px;
|
||
}
|
||
}
|
||
|
||
:deep(table) {
|
||
width: 100%;
|
||
margin: 0 0 14px;
|
||
border-collapse: collapse;
|
||
font-size: 14px;
|
||
|
||
th,
|
||
td {
|
||
border: 1px solid #e2e8f0;
|
||
padding: 6px 12px;
|
||
text-align: left;
|
||
}
|
||
|
||
th {
|
||
background: #f5f7fa;
|
||
font-weight: 600;
|
||
}
|
||
}
|
||
|
||
:deep(a) {
|
||
color: #2563eb;
|
||
text-decoration: none;
|
||
|
||
&:hover {
|
||
text-decoration: underline;
|
||
}
|
||
}
|
||
|
||
:deep(hr) {
|
||
border: none;
|
||
border-top: 1px solid #eaecef;
|
||
margin: 16px 0;
|
||
}
|
||
|
||
:deep(img) {
|
||
max-width: 100%;
|
||
border-radius: 6px;
|
||
}
|
||
}
|
||
|
||
/* 执行中占位 */
|
||
.loading-text {
|
||
color: #94a3b8;
|
||
font-size: 13px;
|
||
}
|
||
|
||
.loading-dots {
|
||
display: inline-flex;
|
||
align-items: center;
|
||
gap: 3px;
|
||
margin-left: 6px;
|
||
|
||
i {
|
||
width: 4px;
|
||
height: 4px;
|
||
border-radius: 50%;
|
||
background: #94a3b8;
|
||
animation: dot-blink 1.2s infinite ease-in-out both;
|
||
|
||
&:nth-child(1) { animation-delay: 0s; }
|
||
&:nth-child(2) { animation-delay: 0.15s; }
|
||
&:nth-child(3) { animation-delay: 0.3s; }
|
||
}
|
||
}
|
||
|
||
@keyframes dot-blink {
|
||
0%, 80%, 100% { opacity: 0.2; }
|
||
40% { opacity: 1; }
|
||
}
|
||
|
||
.time {
|
||
font-size: 11px;
|
||
color: #8f9aae;
|
||
padding: 4px 2px;
|
||
|
||
.message-row.is-user & {
|
||
text-align: right;
|
||
color: rgba(148, 163, 184, 0.9);
|
||
}
|
||
.message-row:not(.is-user) & {
|
||
padding-left: 2px;
|
||
}
|
||
}
|
||
</style>
|