diff --git a/web/src/components/chat/InputArea.tsx b/web/src/components/chat/InputArea.tsx
new file mode 100644
index 00000000..d37838f9
--- /dev/null
+++ b/web/src/components/chat/InputArea.tsx
@@ -0,0 +1,252 @@
+import React, { useState, useRef, useEffect } from 'react';
+import { Send, Paperclip, Square, X, Loader2, Sparkles } from 'lucide-react';
+
+interface InputAreaProps {
+  onSendMessage: (text: string, attachments?: { name: string; size: string; type: string }[]) => void;
+  isThinking: boolean;
+  isStreaming: boolean;
+  onStopStreaming?: () => void;
+}
+
+export const InputArea: React.FC<InputAreaProps> = ({
+  onSendMessage,
+  isThinking,
+  isStreaming,
+  onStopStreaming,
+}) => {
+  const [text, setText] = useState('');
+  const [attachments, setAttachments] = useState<{ name: string; size: string; type: string }[]>([]);
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  // 自动撑高
+  useEffect(() => {
+    if (textareaRef.current) {
+      textareaRef.current.style.height = 'auto';
+      textareaRef.current.style.height = `${Math.min(160, Math.max(42, textareaRef.current.scrollHeight))}px`;
+    }
+  }, [text]);
+
+  const handleSend = () => {
+    if (isThinking || isStreaming) {
+      if (isStreaming && onStopStreaming) {
+        onStopStreaming();
+      }
+      return;
+    }
+
+    if (!text.trim() && attachments.length === 0) {
+      return;
+    }
+
+    onSendMessage(text.trim(), attachments);
+    setText('');
+    setAttachments([]);
+    if (textareaRef.current) {
+      textareaRef.current.style.height = '42px';
+    }
+  };
+
+  const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
+    if (e.key === 'Enter' && !e.shiftKey) {
+      e.preventDefault();
+      handleSend();
+    }
+  };
+
+  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    if (e.target.files && e.target.files.length > 0) {
+      const file = e.target.files[0];
+      const sizeStr = (file.size / 1024).toFixed(0) + ' KB';
+      setAttachments((prev) => [
+        ...prev,
+        {
+          name: file.name,
+          size: sizeStr,
+          type: file.type || 'document',
+        },
+      ]);
+      e.target.value = '';
+    }
+  };
+
+  const removeAttachment = (index: number) => {
+    setAttachments((prev) => prev.filter((_, i) => i !== index));
+  };
+
+  return (
+    <div
+      style={{
+        padding: '12px 16px 16px',
+        background: 'var(--bg-panel)',
+        borderTop: '1px solid var(--border)',
+        display: 'flex',
+        flexDirection: 'column',
+        gap: '8px',
+        position: 'relative',
+      }}
+    >
+      {/* 隐藏的原生文件上传 */}
+      <input
+        ref={fileInputRef}
+        type="file"
+        style={{ display: 'none' }}
+        onChange={handleFileChange}
+        accept=".pdf,.doc,.docx,.md,.txt,.xlsx"
+      />
+
+      {/* 已挂载文件芯片 */}
+      {attachments.length > 0 && (
+        <div style={{ display: 'flex', flexWrap: 'wrap', gap: '6px' }}>
+          {attachments.map((att, i) => (
+            <div
+              key={i}
+              style={{
+                display: 'flex',
+                alignItems: 'center',
+                gap: '5px',
+                padding: '3px 8px',
+                borderRadius: 'var(--r-sm)',
+                background: 'var(--bg-subtle)',
+                border: '1px solid var(--brand-100)',
+                fontSize: '11px',
+                color: 'var(--brand-600)',
+              }}
+            >
+              <span>📎 {att.name}</span>
+              <button
+                onClick={() => removeAttachment(i)}
+                style={{ display: 'flex', alignItems: 'center', color: 'var(--text-faint)' }}
+              >
+                <X size={12} />
+              </button>
+            </div>
+          ))}
+        </div>
+      )}
+
+      {/* 智能体状态提示 */}
+      {isThinking && (
+        <div
+          style={{
+            display: 'flex',
+            alignItems: 'center',
+            gap: '6px',
+            fontSize: '11px',
+            color: 'var(--brand-500)',
+            fontWeight: 500,
+          }}
+        >
+          <Sparkles size={12} />
+          <span>智能体协同小队正在调取法规并推演回复...</span>
+        </div>
+      )}
+
+      {/* 输入框与按钮条 */}
+      <div
+        style={{
+          display: 'flex',
+          alignItems: 'flex-end',
+          gap: '8px',
+          background: 'var(--bg-subtle)',
+          borderRadius: 'var(--r-md)',
+          border: '1px solid var(--border)',
+          padding: '6px 10px',
+        }}
+      >
+        {/* 附件按钮 */}
+        <button
+          onClick={() => fileInputRef.current?.click()}
+          title="上传项目需求材料或参考文档"
+          style={{
+            width: '32px',
+            height: '32px',
+            borderRadius: 'var(--r-sm)',
+            display: 'flex',
+            alignItems: 'center',
+            justifyContent: 'center',
+            color: 'var(--text-muted)',
+            flexShrink: 0,
+            marginBottom: '4px',
+            transition: 'all 0.15s ease',
+          }}
+          onMouseEnter={(e) => {
+            e.currentTarget.style.color = 'var(--brand-500)';
+            e.currentTarget.style.background = 'var(--bg-hover)';
+          }}
+          onMouseLeave={(e) => {
+            e.currentTarget.style.color = 'var(--text-muted)';
+            e.currentTarget.style.background = 'transparent';
+          }}
+        >
+          <Paperclip size={18} />
+        </button>
+
+        {/* 多行输入框 */}
+        <textarea
+          ref={textareaRef}
+          value={text}
+          onChange={(e) => setText(e.target.value)}
+          onKeyDown={handleKeyDown}
+          placeholder="向参谋小队提问、下达立项指令，或要求编制/修改交付物 (Enter 发送，Shift+Enter 换行)..."
+          rows={1}
+          style={{
+            flex: 1,
+            border: 'none',
+            background: 'transparent',
+            resize: 'none',
+            fontSize: '13.5px',
+            lineHeight: 1.5,
+            color: 'var(--text-strong)',
+            minHeight: '42px',
+            maxHeight: '160px',
+            padding: '8px 4px',
+          }}
+        />
+
+        {/* 智能发送按钮 */}
+        <button
+          onClick={handleSend}
+          disabled={!text.trim() && attachments.length === 0 && !isStreaming}
+          className={isThinking ? 'agent-pulse-active' : ''}
+          style={{
+            width: '36px',
+            height: '36px',
+            borderRadius: 'var(--r-md)',
+            background: isStreaming
+              ? 'var(--danger)'
+              : isThinking
+              ? 'var(--brand-600)'
+              : 'var(--brand-grad)',
+            color: '#fff',
+            display: 'flex',
+            alignItems: 'center',
+            justifyContent: 'center',
+            flexShrink: 0,
+            marginBottom: '3px',
+            transition: 'all 0.2s ease',
+            opacity: !text.trim() && attachments.length === 0 && !isThinking && !isStreaming ? 0.45 : 1,
+            boxShadow: isThinking
+              ? '0 0 12px rgba(107, 132, 255, 0.7)'
+              : '0 2px 8px rgba(79, 107, 255, 0.25)',
+          }}
+          title={
+            isStreaming
+              ? '停止当前生成'
+              : isThinking
+              ? '智能体正在推演中...'
+              : '发送 (Enter)'
+          }
+        >
+          {isStreaming ? (
+            <Square size={14} fill="#fff" />
+          ) : isThinking ? (
+            <Loader2 size={16} className="animate-spin-fast" />
+          ) : (
+            <Send size={15} />
+          )}
+        </button>
+      </div>
+    </div>
+  );
+};
diff --git a/web/src/components/chat/MessageBubble.tsx b/web/src/components/chat/MessageBubble.tsx
new file mode 100644
index 00000000..380378f9
--- /dev/null
+++ b/web/src/components/chat/MessageBubble.tsx
@@ -0,0 +1,140 @@
+import React from 'react';
+import { ChatMessage } from '../../types/workbench';
+import { PhaseEventStrip } from './PhaseEventStrip';
+import { RecommendedCaseCard } from './RecommendedCaseCard';
+import { FileText, Bot, User } from 'lucide-react';
+
+interface MessageBubbleProps {
+  message: ChatMessage;
+  onOpenCase?: (docId: string) => void;
+}
+
+export const MessageBubble: React.FC<MessageBubbleProps> = ({ message, onOpenCase }) => {
+  const isUser = message.role === 'user';
+
+  return (
+    <div
+      style={{
+        display: 'flex',
+        flexDirection: 'column',
+        alignItems: isUser ? 'flex-end' : 'flex-start',
+        marginBottom: '16px',
+        padding: '0 16px',
+      }}
+    >
+      <div
+        style={{
+          display: 'flex',
+          gap: '10px',
+          maxWidth: '85%',
+          flexDirection: isUser ? 'row-reverse' : 'row',
+        }}
+      >
+        {/* 头像 */}
+        <div
+          style={{
+            width: '32px',
+            height: '32px',
+            borderRadius: '50%',
+            background: isUser ? 'var(--brand-500)' : 'var(--brand-grad)',
+            color: '#fff',
+            display: 'flex',
+            alignItems: 'center',
+            justifyContent: 'center',
+            fontSize: '13px',
+            fontWeight: 700,
+            flexShrink: 0,
+            boxShadow: 'var(--shadow-xs)',
+          }}
+        >
+          {isUser ? <User size={16} /> : <Bot size={16} />}
+        </div>
+
+        {/* 气泡正文 */}
+        <div
+          style={{
+            display: 'flex',
+            flexDirection: 'column',
+            alignItems: isUser ? 'flex-end' : 'flex-start',
+            gap: '4px',
+          }}
+        >
+          {/* 发送人与意图标签 */}
+          <div style={{ display: 'flex', alignItems: 'center', gap: '6px', fontSize: '11px', color: 'var(--text-faint)' }}>
+            <span style={{ fontWeight: 600, color: 'var(--text-muted)' }}>
+              {isUser ? message.authorName || '我' : '水木东方协同参谋'}
+            </span>
+            <span>{message.timestamp}</span>
+            {message.intentTag && (
+              <span
+                style={{
+                  fontSize: '10px',
+                  fontWeight: 600,
+                  padding: '1px 6px',
+                  borderRadius: 'var(--r-pill)',
+                  background: 'var(--brand-50)',
+                  color: 'var(--brand-600)',
+                  border: '1px solid var(--brand-100)',
+                }}
+              >
+                {message.intentTag}
+              </span>
+            )}
+          </div>
+
+          {/* 附件展示 */}
+          {message.attachments && message.attachments.length > 0 && (
+            <div style={{ display: 'flex', flexWrap: 'wrap', gap: '6px', marginBottom: '4px' }}>
+              {message.attachments.map((att, i) => (
+                <div
+                  key={i}
+                  style={{
+                    display: 'flex',
+                    alignItems: 'center',
+                    gap: '6px',
+                    padding: '4px 8px',
+                    borderRadius: 'var(--r-sm)',
+                    background: 'var(--bg-subtle)',
+                    border: '1px solid var(--border)',
+                    fontSize: '11px',
+                    color: 'var(--text)',
+                  }}
+                >
+                  <FileText size={12} style={{ color: 'var(--brand-500)' }} />
+                  <span>{att.name}</span>
+                  <span style={{ color: 'var(--text-faint)' }}>({att.size})</span>
+                </div>
+              ))}
+            </div>
+          )}
+
+          {/* 主体卡片 */}
+          <div
+            style={{
+              padding: '12px 14px',
+              borderRadius: isUser ? '14px 4px 14px 14px' : '4px 14px 14px 14px',
+              background: isUser ? 'var(--brand-500)' : 'var(--bg-panel)',
+              color: isUser ? '#ffffff' : 'var(--text-strong)',
+              border: isUser ? 'none' : '1px solid var(--border)',
+              boxShadow: isUser ? '0 2px 8px rgba(79, 107, 255, 0.25)' : 'var(--shadow-xs)',
+              fontSize: '13.5px',
+              lineHeight: 1.6,
+              wordBreak: 'break-word',
+              whiteSpace: 'pre-wrap',
+            }}
+          >
+            {message.content}
+
+            {/* 时序进度流条 */}
+            {message.phaseEvents && <PhaseEventStrip events={message.phaseEvents} />}
+
+            {/* 标杆案例卡片 */}
+            {message.recommendedCases && (
+              <RecommendedCaseCard cases={message.recommendedCases} onOpenCase={onOpenCase} />
+            )}
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
diff --git a/web/src/components/chat/MessageStream.tsx b/web/src/components/chat/MessageStream.tsx
new file mode 100644
index 00000000..20dc7574
--- /dev/null
+++ b/web/src/components/chat/MessageStream.tsx
@@ -0,0 +1,50 @@
+import React, { useRef, useEffect } from 'react';
+import { ChatMessage } from '../../types/workbench';
+import { MessageBubble } from './MessageBubble';
+
+interface MessageStreamProps {
+  messages: ChatMessage[];
+  onOpenCase?: (docId: string) => void;
+}
+
+export const MessageStream: React.FC<MessageStreamProps> = ({ messages, onOpenCase }) => {
+  const bottomRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    bottomRef.current?.scrollIntoView({ behavior: 'smooth' });
+  }, [messages]);
+
+  return (
+    <div
+      style={{
+        flex: 1,
+        overflowY: 'auto',
+        padding: '16px 0',
+        display: 'flex',
+        flexDirection: 'column',
+      }}
+    >
+      {messages.length === 0 ? (
+        <div
+          style={{
+            flex: 1,
+            display: 'flex',
+            flexDirection: 'column',
+            alignItems: 'center',
+            justifyContent: 'center',
+            color: 'var(--text-faint)',
+            gap: '8px',
+            fontSize: '13px',
+          }}
+        >
+          <span>暂无对话记录，请在下方发送立项需求</span>
+        </div>
+      ) : (
+        messages.map((msg) => (
+          <MessageBubble key={msg.id} message={msg} onOpenCase={onOpenCase} />
+        ))
+      )}
+      <div ref={bottomRef} style={{ height: '1px' }} />
+    </div>
+  );
+};
diff --git a/web/src/components/chat/PhaseEventStrip.tsx b/web/src/components/chat/PhaseEventStrip.tsx
new file mode 100644
index 00000000..4e96475d
--- /dev/null
+++ b/web/src/components/chat/PhaseEventStrip.tsx
@@ -0,0 +1,63 @@
+import React from 'react';
+import { PhaseEvent } from '../../types/workbench';
+import { CheckCircle2, Loader2, Circle } from 'lucide-react';
+
+interface PhaseEventStripProps {
+  events: PhaseEvent[];
+}
+
+export const PhaseEventStrip: React.FC<PhaseEventStripProps> = ({ events }) => {
+  if (!events || events.length === 0) {
+    return null;
+  }
+
+  return (
+    <div
+      style={{
+        display: 'flex',
+        alignItems: 'center',
+        flexWrap: 'wrap',
+        gap: '6px',
+        padding: '8px 12px',
+        margin: '6px 0 10px',
+        borderRadius: 'var(--r-md)',
+        background: 'var(--bg-subtle)',
+        border: '1px solid var(--border)',
+        fontSize: '12px',
+      }}
+    >
+      {events.map((evt, idx) => {
+        const isRunning = evt.status === 'running';
+        const isDone = evt.status === 'completed';
+
+        return (
+          <React.Fragment key={evt.step + idx}>
+            <div
+              style={{
+                display: 'flex',
+                alignItems: 'center',
+                gap: '5px',
+                color: isDone
+                  ? 'var(--success)'
+                  : isRunning
+                  ? 'var(--brand-500)'
+                  : 'var(--text-faint)',
+                fontWeight: isRunning ? 600 : 500,
+              }}
+            >
+              <span>{evt.icon}</span>
+              <span>{evt.label}</span>
+              {isDone && <CheckCircle2 size={13} style={{ color: 'var(--success)' }} />}
+              {isRunning && <Loader2 size={13} className="animate-spin-fast" style={{ color: 'var(--brand-500)' }} />}
+              {!isDone && !isRunning && <Circle size={10} style={{ color: 'var(--border-strong)' }} />}
+            </div>
+
+            {idx < events.length - 1 && (
+              <span style={{ color: 'var(--border-strong)', fontSize: '11px', margin: '0 2px' }}>➔</span>
+            )}
+          </React.Fragment>
+        );
+      })}
+    </div>
+  );
+};
diff --git a/web/src/components/chat/RecommendedCaseCard.tsx b/web/src/components/chat/RecommendedCaseCard.tsx
new file mode 100644
index 00000000..01d6ce4e
--- /dev/null
+++ b/web/src/components/chat/RecommendedCaseCard.tsx
@@ -0,0 +1,115 @@
+import React from 'react';
+import { RecommendedCase } from '../../types/workbench';
+import { Bookmark, Sparkles, ExternalLink } from 'lucide-react';
+
+interface RecommendedCaseCardProps {
+  cases: RecommendedCase[];
+  onOpenCase?: (docId: string) => void;
+}
+
+export const RecommendedCaseCard: React.FC<RecommendedCaseCardProps> = ({ cases, onOpenCase }) => {
+  if (!cases || cases.length === 0) {
+    return null;
+  }
+
+  return (
+    <div
+      style={{
+        marginTop: '10px',
+        display: 'flex',
+        flexDirection: 'column',
+        gap: '8px',
+      }}
+    >
+      <div style={{ display: 'flex', alignItems: 'center', gap: '6px', fontSize: '12px', fontWeight: 600, color: 'var(--amber-500)' }}>
+        <Sparkles size={14} />
+        <span>往期标杆案例与历史报价经验自推荐（智能向量召回）</span>
+      </div>
+
+      {cases.map((c, idx) => (
+        <div
+          key={c.docId + idx}
+          style={{
+            padding: '10px 12px',
+            borderRadius: 'var(--r-md)',
+            background: 'var(--bg-card)',
+            border: '1px solid var(--border)',
+            boxShadow: 'var(--shadow-xs)',
+            display: 'flex',
+            flexDirection: 'column',
+            gap: '5px',
+          }}
+        >
+          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
+            <div style={{ display: 'flex', alignItems: 'center', gap: '6px' }}>
+              <Bookmark size={13} style={{ color: 'var(--brand-500)' }} />
+              <span style={{ fontSize: '13px', fontWeight: 600, color: 'var(--text-strong)' }}>
+                {c.artifactTitle}
+              </span>
+            </div>
+            <span
+              style={{
+                fontSize: '11px',
+                fontWeight: 600,
+                color: 'var(--success)',
+                background: 'var(--success-bg)',
+                padding: '1px 6px',
+                borderRadius: 'var(--r-pill)',
+              }}
+            >
+              相似度 {(c.similarityScore * 100).toFixed(0)}%
+            </span>
+          </div>
+
+          <div style={{ fontSize: '11px', color: 'var(--text-muted)' }}>
+            <span>定位章节: </span>
+            <span style={{ color: 'var(--text)', fontWeight: 500 }}>{c.sectionTitle}</span>
+          </div>
+
+          {c.keyRegulations && c.keyRegulations.length > 0 && (
+            <div style={{ display: 'flex', alignItems: 'center', flexWrap: 'wrap', gap: '4px', margin: '2px 0' }}>
+              {c.keyRegulations.map((reg) => (
+                <span
+                  key={reg}
+                  style={{
+                    fontSize: '10px',
+                    padding: '1px 5px',
+                    borderRadius: 'var(--r-pill)',
+                    background: 'var(--brand-50)',
+                    color: 'var(--brand-600)',
+                    border: '1px solid var(--brand-100)',
+                  }}
+                >
+                  {reg}
+                </span>
+              ))}
+            </div>
+          )}
+
+          <div style={{ fontSize: '12px', color: 'var(--text)', lineHeight: 1.5, background: 'var(--bg-subtle)', padding: '6px 8px', borderRadius: 'var(--r-sm)' }}>
+            {c.summarySnippet}
+          </div>
+
+          {onOpenCase && (
+            <div style={{ display: 'flex', justifyContent: 'flex-end', marginTop: '2px' }}>
+              <button
+                onClick={() => onOpenCase(c.docId)}
+                style={{
+                  display: 'flex',
+                  alignItems: 'center',
+                  gap: '4px',
+                  fontSize: '11px',
+                  color: 'var(--brand-500)',
+                  fontWeight: 600,
+                }}
+              >
+                <span>在右侧受控栏定位此经验</span>
+                <ExternalLink size={11} />
+              </button>
+            </div>
+          )}
+        </div>
+      ))}
+    </div>
+  );
+};