.m-inbox {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}

.guide-section {
    padding: 60px 0;
}

.guide-section .text {
    text-align: center;
    margin-bottom: 30px;
    font-size: 16px;
}

.guide-section-content {
    margin-top: 50px;
}

.form-block {
    margin-top: 30px;
    border: 5px solid #ddd;
    border-radius: 8px;
    padding: 30px;
    background-color: #f9f9f9;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.form-intro {
    margin-bottom: 30px;
    text-align: center;
    font-size: 15px;
}

.form-block .form-group {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 5px dotted #ddd;
}

.form-block .form-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.form-block .form-group label {
    font-size: 16px;
    display: block;
    margin-bottom: 5px;
    width: 240px;
    font-weight: bold;
    color: #333;
    padding-top: 10px;
}

.form-block .form-group label.privacy-label {
    width: 100%;
    text-align: center;
}

.form-block .form-group label+textarea {
    width: 100%;
    margin-top: 5px;
}

.form-block .form-group .input-area {
    flex: 1;
    min-width: 60%;
    width: 100%;
}

.form-block .form-group .textarea-area {
    flex: 1;
    min-width: 60%;
    width: 100%;
}

.form-block .form-group input[type="text"],
.form-block .form-group input[type="email"],
.form-block .form-group input[type="tel"],
.form-block .form-group select,
.form-block .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
    background-color: #fff;
}

.form-block .form-group select {
    height: 45px;
    padding: 0 12px;
    appearance: menulist;
}

.form-block .form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-block .form-group input:hover,
.form-block .form-group select:hover,
.form-block .form-group textarea:hover {
    border-color: #999;
}

.form-block .form-group input:focus,
.form-block .form-group select:focus,
.form-block .form-group textarea:focus {
    outline: none;
    border-color: #007bba;
    box-shadow: 0 0 5px rgba(0, 123, 186, 0.3);
}

.form-block .form-group .required {
    margin-left: 1em;
    padding: 3px 8px;
    font-size: 12px;
    line-height: 1;
    color: #fff;
    display: inline-block;
    background: #d60404;
    border-radius: 50px;
}

.form-block .form-group .arbitrarily {
    margin-left: 1em;
    padding: 3px 8px;
    font-size: 12px;
    line-height: 1;
    color: #fff;
    display: inline-block;
    background: #a0a0a0;
    border-radius: 50px;
}

.form-block .form-group .form-hint {
    display: block;
    margin-top: 5px;
    font-size: 13px;
    color: #666;
}

.form-block .form-group.privacy-group {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.form-block .form-group.privacy-group .check {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.form-block .form-group.privacy-group input[type="checkbox"] {
    margin-right: 8px;
    width: auto;
    transform: scale(1.2);
}

.form-block .form-group.privacy-group a {
    color: #007bba;
    text-decoration: underline;
}

.form-error-message {
    background-color: #fff2f2;
    border: 1px solid #ffcaca;
    padding: 15px;
    margin-bottom: 30px;
    color: #d60404;
    border-radius: 4px;
}

.form-block .submit-button {
    background: #007bba;
    color: white;
    border: none;
    padding: 15px 50px;
    font-size: 18px;
    border-radius: 50px;
    cursor: pointer;
    transition: background 0.3s;
    display: block;
    margin: 0 auto;
    text-align: center;
}

.form-block .submit-button:hover {
    background: #005b8a;
}

@media screen and (max-width: 768px) {
    .form-step li {
        font-size: 13px;
    }

    .form-block {
        padding: 20px 15px;
    }

    .form-block .form-group {
        flex-direction: column;
    }

    .form-block .form-group label {
        width: 100%;
        margin-bottom: 8px;
    }

    .form-block .form-group .input-area {
        width: 100%;
    }

    .form-block .form-group textarea {
        min-height: 120px;
    }

    .form-block .submit-button {
        width: 100%;
        max-width: 300px;
        padding: 12px 30px;
    }
}