.c-body {
    box-shadow: 0 4px 8px rgb(0, 0, 0, 8%);
    max-width: 1024px;
    margin: 0 auto;
    min-height: 100vh;
    font-family: 'Roboto', sans-serif;
}
.c-header {
    padding: 20px 10px;
    position: relative;
}
.c-logo {
    margin: 0 auto;
    display: block;
    width: 160px;
    height: auto;
}
.c-iframe {
    width: 100%;
    min-height: calc(100vh - 113px);
}
.c-main__content {
    padding-top: 40px;
}
.c-main__title {
    font-size: 20px;
    margin: 0;
    font-weight: 700;
    text-align: center;
}
.c-main__choose {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    margin-top: 30px;
}
.c-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 44px;
    border-radius: 50px;
    padding: 0 30px;
    font-size: 20px;
    transition: box-shadow .2s ease;
    text-decoration: none;
    font-weight: 500;
    line-height: 1.2;
    gap: 10px;
}
.c-main__link {
    background-color: #cd0082;
    color: #fff;
}
.c-main__link:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,.08);
    transition: box-shadow .2s ease;
}
.c-option-title {
    font-size: 24px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin: 0;
}
.c-option-title .material-symbols-outlined {
    font-size: 30px;
    color: #cd0082;
}
.c-header__back {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: #fff;
    border: 1px solid #003282;
    color: #003282;
    font-size: 16px;
    height: 30px;
    padding-left: 15px;
    padding-right: 15px;
    transition: border .3s ease, color .3s ease, box-shadow .3s ease;
}
.c-header__back:hover {
    border: 1px solid #cd0082;
    color: #cd0082;
    transition: border .3s ease, color .3s ease, box-shadow .3s ease;
}
.c-header__back .material-symbols-outlined {
    font-size: 20px;
}
.material-symbols-outlined {
    font-variation-settings:
        'FILL' 0,
        'wght' 400,
        'GRAD' 0,
        'opsz' 24
}