*{box-sizing:border-box}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#f6f7fb;margin:0}
.wrap{max-width:900px;margin:40px auto;background:#fff;border:1px solid #e6e8ef;border-radius:12px;padding:24px}
h1{margin:0 0 8px 0}
.note{margin:0 0 16px 0;color:#555}
.chat{border-top:1px solid #eee;margin-top:16px;padding-top:16px}
#messages{height:420px;overflow:auto;border:1px solid #eee;border-radius:8px;padding:12px;background:#fafbff}
.msg{margin:8px 0;max-width:80%}
.user{margin-left:auto;background:#e9f1ff}
.assistant{margin-right:auto;background:#f2f3f7}
.bubble{display:inline-block;padding:10px 12px;border-radius:10px}
.inputRow{display:flex;gap:8px;margin-top:10px}
.inputRow input{flex:1;padding:10px;border:1px solid #ddd;border-radius:8px}
.inputRow button{padding:10px 16px;border:0;background:#111;color:#fff;border-radius:8px;cursor:pointer}
.uploader{background:#fcfcff;border:1px dashed #cbd1f1;padding:12px;border-radius:10px;margin:8px 0 16px}
.uploader textarea{width:100%;height:120px;padding:10px;border:1px solid #ddd;border-radius:8px}
.uploader input{width:100%;padding:10px;border:1px solid #ddd;border-radius:8px;margin-top:8px}
.uploader button{margin-top:8px;padding:8px 12px;background:#1f6feb;color:#fff;border:0;border-radius:8px;cursor:pointer}
.small{font-size:12px;color:#666}