:root{color-scheme:dark;
  --bg:#0b1020;--card:#111A33;--border:rgba(148,163,184,.16);
  --text:#e8edf7;--muted:#9fb0c9;--accent:#5b8cff;--ok:#34d399;--err:#f87171}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:640px;margin:0 auto;padding:40px 20px 80px}
h1{font-size:26px;font-weight:800;margin:0 0 16px;letter-spacing:.2px}
.sub{color:var(--muted);font-size:14px;margin-bottom:30px}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:20px 22px;margin-bottom:16px}
.card h2{margin:0 0 4px;font-size:15px;font-weight:700}
.card .hint{color:var(--muted);font-size:12px;margin:0 0 12px}
.field{margin-bottom:16px}
.field label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted);margin-bottom:8px}
.field select,.field input[type=text]{width:100%;background:#0d1430;color:var(--text);
  border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px;outline:none}
.field select:focus,.field input[type=text]:focus{border-color:var(--accent)}
.field select{appearance:none}
.trap{position:absolute;left:-9999px;opacity:0;height:0;width:0;overflow:hidden}
#survey button{width:100%;background:var(--accent);color:#0b1020;border:0;border-radius:10px;
  padding:13px;font-size:15px;font-weight:800;cursor:pointer;transition:.18s}
#survey button:hover{filter:brightness(1.12)}
.msg{border-radius:10px;padding:12px 14px;font-size:14px;margin-bottom:16px}
.msg.ok{background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.35);color:var(--ok)}
.msg.err{background:rgba(248,113,113,.12);border:1px solid rgba(248,113,113,.35);color:var(--err)}
a.cancel{display:inline-block;margin-top:14px;color:var(--muted);font-size:13px;text-decoration:none}
a.cancel:hover{color:var(--text)}
footer{color:var(--muted);font-size:12px;margin-top:28px;text-align:center}