* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 13px;
  color: #1c2430;
  background: #f2f4f8;
  line-height: 1.6;
}
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 13px; }
a { color: #1f6feb; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* 登录页 */
.login-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #123f77, #1f6feb);
}
.login-box {
  background: #fff; border-radius: 12px; padding: 44px 40px;
  width: 400px; box-shadow: 0 24px 60px rgba(6,26,60,.4);
}
.login-box h1 {
  font-size: 22px; color: #123f77; text-align: center; margin-bottom: 6px;
}
.login-box .sub {
  text-align: center; color: #6b7785; font-size: 12px; margin-bottom: 28px;
}
.login-box .fld { margin-bottom: 16px; }
.login-box label {
  display: block; font-size: 12px; color: #4a5568;
  margin-bottom: 5px; font-weight: 500;
}
.login-box input {
  width: 100%; height: 40px; padding: 0 12px;
  border: 1px solid #d3d9e2; border-radius: 5px; outline: none;
  transition: .15s;
}
.login-box input:focus {
  border-color: #1f6feb; box-shadow: 0 0 0 3px rgba(31,111,235,.13);
}
.login-box .btn-login {
  width: 100%; height: 42px; background: #1f6feb; color: #fff;
  border: none; border-radius: 5px; font-size: 14px; font-weight: 600;
  margin-top: 8px;
}
.login-box .btn-login:hover { background: #14509e; }
.login-box .err {
  color: #d93025; font-size: 12px; text-align: center; min-height: 18px;
  margin-top: 10px;
}