:root{font:14px/1.5 -apple-system,PingFang TC,Noto Sans TC,sans-serif;color:#222}body{margin:0;background:#fff}main{padding:12px 16px;max-width:520px}label{display:block;font-weight:600;margin-bottom:4px}select{width:100%;padding:6px;font-size:14px}dl{display:grid;grid-template-columns:7em 1fr;gap:4px 8px;margin:12px 0}dt{color:#666}dd{margin:0;word-break:break-all}button{padding:8px 20px;font-size:14px;border-radius:6px;border:1px solid #3f51b5;background:#3f51b5;color:#fff;cursor:pointer}button:disabled{opacity:.4;cursor:default}#retry{background:#fff;color:#3f51b5}#status.error{color:#c62828}#status.ok{color:#2e7d32}