body { margin:0; background:#f4f6fb; color:#1f2430;
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif; }
.wrap { max-width:640px; margin:0 auto; padding:64px 20px; }
.brand { color:#1a4fd6; font-weight:700; letter-spacing:2px; margin-bottom:18px; }
h1 { font-size:26px; margin:0 0 6px; }
.sub { color:#6b7280; margin:0 0 26px; font-size:14px; }
.card { background:#fff; border:1px solid #e5e7eb; border-radius:10px; padding:22px;
  display:flex; flex-direction:column; box-shadow:0 6px 18px rgba(26,79,214,.06); }
label { font-size:13px; color:#374151; margin:6px 0; }
input,select { padding:10px 12px; border:1px solid #d1d5db; border-radius:6px; font-size:14px; margin-bottom:12px; }
button { margin-top:8px; padding:12px; border:0; border-radius:6px; background:#1a4fd6; color:#fff;
  font-size:15px; cursor:pointer; }
button:hover { background:#1540b0; }
.tip { color:#9ca3af; font-size:12px; margin:14px 0 0; }