:root{--assistant-bg:#e8f0ff;--assistant-border:#cfdcff;--user-bg:#fff4e8;--user-border:#f0d9c2;--system-bg:#f2f3f5;--ink:#111827}*{box-sizing:border-box}pre{margin:0;font-family:inherit;white-space:pre-wrap;word-break:break-word}.chat-wrap{display:flex;flex-direction:column;height:100vh;background:#fafafa}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid #e5e7eb;background:#fff}.chat-header .title{font-weight:700;font-size:18px}.chat-header .step{color:#6b7280}.chat-header .reset-btn{border:1px solid #e5e7eb;background:#fff;padding:6px 10px;border-radius:8px}.chat-body{flex:1;overflow-y:auto;padding:20px 18px;background:#f7f8fb}.bubble-row{display:flex;margin:10px 0}.bubble-row.left{justify-content:flex-start}.bubble-row.right{justify-content:flex-end}.bubble{position:relative;max-width:72%;padding:14px 16px;border-radius:14px;border:1px solid transparent;color:var(--ink);box-shadow:0 1px 1px #0000000f}.bubble.system{background:var(--system-bg);border-color:#e5e7eb;color:#374151}.bubble.assistant{background:var(--assistant-bg);border-color:var(--assistant-border)}.bubble.user{background:var(--user-bg);border-color:var(--user-border)}.bubble.assistant:after{content:"";position:absolute;left:-6px;bottom:12px;width:12px;height:12px;background:var(--assistant-bg);border-left:1px solid var(--assistant-border);border-bottom:1px solid var(--assistant-border);transform:rotate(45deg)}.bubble.user:after{content:"";position:absolute;right:-6px;bottom:12px;width:12px;height:12px;background:var(--user-bg);border-right:1px solid var(--user-border);border-bottom:1px solid var(--user-border);transform:rotate(45deg)}.bubble .msg{line-height:1.6;font-size:15px}.bubble.typing{opacity:.85}.bubble.typing .msg{position:relative;padding-right:18px}.bubble.typing .msg:after{content:"";position:absolute;right:0;top:6px;width:4px;height:4px;border-radius:50%;background:#9aa7c9;box-shadow:8px 0 #9aa7c9,16px 0 #9aa7c9;animation:blink 1.2s infinite ease-in-out}@keyframes blink{0%{opacity:.3}50%{opacity:1}to{opacity:.3}}.chat-input{display:flex;gap:10px;padding:12px;border-top:1px solid #e5e7eb;background:#fff}.chat-input input{flex:1;padding:12px 14px;border:1px solid #e5e7eb;border-radius:12px;font-size:15px;outline:none}.chat-input input:focus{border-color:#c7d2fe;box-shadow:0 0 0 3px #6366f126}.chat-input button{padding:0 16px;border:1px solid #e5e7eb;border-radius:12px;background:#111827;color:#fff;font-weight:600}.chat-input button:disabled{opacity:.5;cursor:not-allowed}.error{color:#b91c1c;padding:8px 16px}.context-view{padding:8px 16px;background:#fff;border-top:1px solid #e5e7eb}