body {
    background-color: #f7f9fc;
    color: #333;
    padding-bottom: 50px;
}

.rp_header {
    text-align: center;
    padding: 139px 0 30px;
}

.rp_sologn {
    max-width: 600px;
    height: auto;
}

.rp_card {
    width: 800px;
    margin: 0 auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    padding: 40px 60px;
}

.rp_card_hd {
    border-bottom: 1px solid #eee;
    margin-bottom: 40px;
  padding-bottom: 20px;
}

.rp_card_title {
    font-size: 18px;
    font-weight: bold;
    position: relative;
    display: inline-block;
}

.rp_card_title::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 16px;
  width: 40px;
  height: 8px;
  background: #c32626;
  border-radius: 4px;
}

.rp_form {
    width: 600px;
    margin: 0 auto;
}

.form_item {
    display: flex;
    align-items: center;
    margin-bottom: 18px;
}

.form_label {
    width: 140px;
    text-align: right;
    margin-right: 20px;
    font-size: 14px;
    color: #999;
}

.form_input_box {
    position: relative;
}

.form_input {
    width: 293px;
    height: 40px;
    background: #ebedf0;
    border: none;
    border-radius: 6px;
    padding: 0 15px;
    font-size: 14px;
    outline: none;
}

.rp_btns {
    display: flex;
    justify-content: center;
    margin-top: 50px;
}

.btn_submit {
    width: 140px;
    height: 40px;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    transition: opacity 0.2s;
    background: #c32626;
    color: #fff;
    font-weight: bold;
}

.btn_submit:hover {
    opacity: 0.9;
}
input::placeholder,
textarea::placeholder {
  color: #999;
  font-size: 14px;
  opacity: 1; /* 修复 Firefox 默认透明度 */
}