*{box-sizing: border-box;margin:0;padding:0;font-family:system-ui}
.container{max-width:800px;margin:40px auto;padding:0 20px}
h2{margin-bottom:20px}
.input-area{margin-bottom:20px}
#stockCode{padding:8px 12px;width:300px;font-size:16px}
#queryBtn{padding:8px 16px;background:#0284c7;color:#fff;border:none;border-radius:4px;cursor:pointer;margin-left:8px}
#result{white-space:pre-wrap;background:#f5f5f5;padding:16px;border-radius:6px;min-height:200px}