body {
    font-family: 'Noto Sans TC', sans-serif;
    background-color: #f4f7fa;
    margin: 0;
    padding: 0;
}

.survey-container {
    max-width: 800px;
    margin: 50px auto;
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 20px;
}

.intro {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 30px;
}

.survey-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-group label {
    font-weight: 500;
    color: #2c3e50;
}

.form-group select,
.form-group input[type="text"],
.form-group textarea {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group select:focus,
.form-group input[type="text"]:focus,
.form-group textarea:focus {
    border-color: #3498db;
    outline: none;
}

.rating {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.rating label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.rating input[type="radio"] {
    margin: 0;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.submit-button {
    padding: 12px 30px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.submit-button:hover {
    background-color: #2980b9;
}

.alert {
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    margin-bottom: 20px;
}

.alert-success {
    background-color: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
}

.alert-danger {
    background-color: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
}