#whw-btn{position:fixed;right:20px;bottom:20px;z-index:2147483000;display:flex;align-items:center;gap:8px;padding:12px 18px;border:0;border-radius:999px;background:linear-gradient(135deg,#1a1a1a,#000);color:#fff;font:600 14px/1 system-ui,-apple-system,Segoe UI,Arial,sans-serif;cursor:pointer;box-shadow:0 8px 24px rgba(15,23,42,.35)}
#whw-btn:hover{transform:translateY(-1px)}
#whw-panel{position:fixed;right:20px;bottom:76px;z-index:2147483000;width:340px;max-width:calc(100vw - 24px);max-height:calc(100vh - 100px);overflow:auto;background:#fff;color:#0f172a;border:1px solid #e2e8f0;border-radius:14px;box-shadow:0 20px 50px rgba(15,23,42,.3);font:14px/1.45 system-ui,-apple-system,Segoe UI,Arial,sans-serif;display:none}
#whw-panel.open{display:block}
#whw-panel header{padding:14px 16px;background:linear-gradient(135deg,#1a1a1a,#000);color:#fff;border-radius:14px 14px 0 0}
#whw-panel header b{display:block;font-size:15px}
#whw-panel header span{font-size:12px;color:#cbd5e1}
#whw-panel form{padding:14px 16px;display:grid;gap:10px}
#whw-panel label{display:grid;gap:4px;font-size:12px;font-weight:600;color:#334155}
#whw-panel input,#whw-panel select,#whw-panel textarea{width:100%;box-sizing:border-box;padding:9px 10px;border:1px solid #cbd5e1;border-radius:8px;font:14px system-ui,-apple-system,Segoe UI,Arial,sans-serif;color:#0f172a;background:#fff}
#whw-panel textarea{min-height:90px;resize:vertical}
#whw-panel input:focus,#whw-panel select:focus,#whw-panel textarea:focus{outline:2px solid #0f172a;border-color:#0f172a}
#whw-panel .whw-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
#whw-panel button[type=submit]{padding:11px;border:0;border-radius:8px;background:#000;color:#fff;font:600 14px system-ui,sans-serif;cursor:pointer}
#whw-panel button[disabled]{opacity:.6;cursor:wait}
#whw-panel .whw-note{font-size:11px;color:#64748b;text-align:center}
#whw-panel .whw-msg{padding:10px;border-radius:8px;font-size:13px;display:none}
#whw-panel .whw-msg.err{display:block;background:#fef2f2;color:#991b1b}
#whw-panel .whw-done{padding:22px 16px;text-align:center;display:none}
#whw-panel .whw-done button{margin-top:10px;background:none;border:0;color:#0f172a;text-decoration:underline;cursor:pointer;font:13px system-ui,sans-serif}