/* 底部CTA */
.cta {
    padding: 100px 0;
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8)), 
                url('../images/concat-bg.jpg') no-repeat center center/cover;
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--dark);
    font-weight: 500;
    text-align: left;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

/* 表单样式 */

/* 表单错误提示 */
.error-message {
    display: none;
    background: #e6f2ff;
    color: #003366;
    padding: 15px;
    margin-bottom: 20px;
    border-left: 4px solid #6699cc;
    border-radius: 4px;
    animation: fadeIn 0.5s ease-out;
    font-size: 14px;
    line-height: 1.5;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-content {
    background-color: #fff;
    padding: 30px 50px;
    border-radius: 10px;
    /* box-shadow: 0 0 20px rgba(0, 0, 0, 0.2); */
}

.modal-header {
    background-color: #f0f0f0; 
    text-align: center;
    padding: 15px;
    margin-bottom: 20px;
}

.modal-header h2 {
    color: #000;
    font-size: 24px;
    margin: 0;
}

.modal-header p {
    color: #000;
    font-size: 14px;
    margin-top: 5px;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 20px;
    cursor: pointer;
    font-size: 28px;
    color: #999;
    transition: color 0.3s ease;
}

.close-modal:hover {
    color: #333;
}

.form-group {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.form-group .red {
    color: red;
    margin-right: 5px;
}

.form-group label {
    width: 80px; 
    text-align: right;
    margin-right: 10px;
    color: #212529;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #007BFF;
    outline: none;
}

.modal-body button[type="submit"] {
    display: flex;
    justify-content: center;
    margin: 0 auto;
    width: 30%;
    padding: 10px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.modal-body button[type="submit"]:hover {
    background-color: #0056b3;
}