body {
    font-family: "Noto Sans KR", sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.header {
    text-align: center;
    padding: 20px;
    background-color: #005f8d;
    color: white;
}

.nav {
    background: #e0f7fa;
    border-bottom: 2px solid #00796b;
}

.nav ul {
    list-style: none;
    padding: 10px 20px;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.nav a {
    text-decoration: none;
    color: #00796b;
    font-weight: bold;
}

.nav a:hover {
    color: #004d40;
}

.main {
    width: 80%;
    margin: 20px auto;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.survey-container {
    margin: 20px 0;
}

textarea {
    width: 100%;
    padding: 10px;
    resize: vertical;
    border: 1px solid #ccc;
    border-radius: 4px;
}

fieldset {
    margin-bottom: 20px;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
}

button, input[type="submit"] {
    padding: 10px 20px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

button:hover, input[type="submit"]:hover {
    background-color: #218838;
}

.reference {
    margin-top: 30px;
}

.reference ul {
    list-style: none;
    padding: 0;
}

.reference li {
    margin: 5px 0;
}

.footer {
    text-align: center;
    padding: 10px;
    background-color: #e0f7fa;
    color: #00796b;
    position: relative;
    bottom: 0;
    width: 100%;
}