.tanchuang {
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    position: fixed;
    top: 0;
    z-index: 101;
    display: flex;
    justify-content: center;
    align-items: center;
    display: none;
}

.show {
    display: flex;
}

.modal {
    width: 900px;
    background: #fff;
}

.modal-top {
    height: 50px;
    padding: 0 20px;
    border-bottom: 1px solid #ccc;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
}

.modal-title {
    font-family: Arial;
    font-weight: bold;
    font-size: 16px;
    color: #333333;
}

.modal-content {
    padding: 28px 35px 35px;
    box-sizing: border-box;
}

.modal-form-item:not(:last-child) {
    margin-bottom: 25px;
}

.modal-form-label {
    font-size: 14px;
    color: #333;
    margin-bottom: 10px;
}

.modal-form-input {
    width: 100%;
    padding: 20px 19px;
    box-sizing: border-box;
    background: #F4F4F4;
    border-radius: 13px;
    border: none;
    outline: none;
    font-size: 14px;
    font-family: 'Arial';
    font-size: 14px;
    color: #333;
}

.modal-form-input::placeholder {
    font-family: Arial;
    font-weight: 400;
    font-size: 14px;
    color: #999999;
}

.modal-form-textarea {
    /* font-family: 'Arial'; */
    resize: none;
    height: 144px;
}

.modal-form-input:focus {
    /* outline: none; */
}

.modal-form-btn {
    margin: 0 auto;
    margin-top: 35px;
    width: 312px;
    height: 55px;
    background: linear-gradient(90deg, #58B665, #3675B7);
    border-radius: 27px;
    line-height: 55px;
    text-align: center;
    font-family: Arial;
    font-weight: bold;
    font-size: 18px;
    color: #FFFFFF;
    cursor: pointer;

    transition: 1s ease;
    overflow: hidden;
    position: relative;
}

.modal-form-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #3675B7, #58B665);
    opacity: 0;
    transition: opacity 1s ease;
    z-index: 0;
}

.btntext {
    position: relative;
    z-index: 1;
}

.modal-form-btn:hover::before {
    opacity: 1;
}

.btn-opacity {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
}

.modal-form-btn:hover .btn-opacity {
    background-color: rgba(255, 255, 255, .2);
}

/* .modal-form-btn:hover {

    background: linear-gradient(90deg, #3675B7, #58B665);
} */