body {
    background-color: #ffffeb;
    color: #3D3D3D;
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    margin: 0;
    padding: 0;
}
header {
    background-color: #ffebb5;
    text-align: center;
    padding: 1rem;
    margin-bottom: 1rem;
}
.title {
    font-size: 1rem;
}
h3 {
    position: relative;
    padding: 0.5rem;
    font-size: 1.2rem;
}
h3:after {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    content: '';
    background-color: #807a6666;
}
.container {
    max-width: 700px;
    margin: 0 auto;
    padding: 1rem;
}
.wrap {
    margin: 1.6rem 0;
}
.button {
    text-align: center;
}
.link-button {
    text-align: center;
    margin-bottom: 1.4rem;
}
a.nav-btn {
    display: inline-block;
    text-align: center;
    vertical-align: middle;
    width: 100px;
    margin-bottom: 1rem;
    font-weight: bold;
    background: #ffebb5;
    color: #3D3D3D;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, .1);
    -webkit-box-shadow: inset 0 2px 5px rgba(0, 0, 0, .2);
    transition: 0.5s;
    padding: 6px 10px;
    text-decoration: none;
}
a.nav-btn:hover {
    opacity: 0.3;
}
.shadow_btn {
    display: inline-block;
    max-width: 200px;
    margin: 0 auto;
    border: 2px solid #abc470;
    border-radius: 0;
    color: #fff;
    background: #abc470;
    -webkit-box-shadow: 4px 4px 0 #84975F;
    box-shadow: 4px 4px 0 #849757;
    padding: 0.8em 1.6em;
    text-decoration: none;
    text-align: center;
    transition: 0.3s;
    font-weight: nomal;
}
/* マウスオーバーした際のデザイン */
.shadow_btn:hover {
    -webkit-box-shadow: -4px -4px 0 #849757; /* 影の距離・色 */
    box-shadow: -4px -4px 0 #849757; /* 影の距離・色 */
}
.question-item {
    max-width: 600px;
    margin: 0 auto;
    margin-bottom: 10px;
    border: 1px solid #E6E6E6;
    border-radius: 5px;
    background-color: #FAFAFA;
    box-shadow: 0 4px 4px rgb(0 0 0 / 2%), 0 2px 3px -2px rgba(0 0 0 / 5%);
}
.question-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    padding: 1rem 2rem 1rem 3rem;
    color: #3D3D3D;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.question-item summary::before, .question-item p::before {
    position: absolute;
    left: 1rem;
    font-weight: 500;
    font-size: 1.3em;
}
.question-item summary::before {
    color: #807a66;
    content: "Q";
}
.question-item summary::after {
    flex-shrink: 0;
    transform: translateY(-25%) rotate(45deg);
    width: 7px;
    height: 7px;
    border-bottom: 3px solid #333333b3;
    border-right: 3px solid #333333b3;
    content: '';
    transition: transform .5s;
}
.question-item[open] summary::after {
    transform: rotate(225deg);
}
.question-item summary:hover {
    background-color: #E6E6E6;
}

.question-item summary span {
    flex-grow: 1;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    margin-right: 10px;
}

.question-item p {
    position: relative;
    transform: translateY(-10px);
    opacity: 0;
    margin: 0.6rem 0 0 0;
    padding: .3em 3em 1.5em;
    color: #333;
    transition: transform .5s, opacity .5s;
}
.question-item[open] p {
    transform: none;
    opacity: 1;
}
.question-item p::before {
    color: #abc470;
    line-height: 1.2;
    content: "A";
}
.question-item a {
    color: #3D3D3D;
    font-style: italic;
}
.question-item a:hover {
    opacity: 0.5;
}

@media (max-width: 768px) {
.question-item {
    max-width: 100%;
}
}

.icon {
    width: 20px;
    height: auto;
    padding-left: 5px;
}
.format {
    padding: 0 0 0 1rem;
    margin: 0;
}
span.marker {
    background: linear-gradient(transparent 50%, #B0E0B7 50%);
    padding-bottom: 0.1em;
}
.footer {
    background-color: #ffebb5;
    color: #3D3D3D;
    padding: 1.6rem;
    text-align: center;
}
.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}
.footer-section {
    flex: 1;
    justify-content: space-evenly;
    display: flex;
    align-items: center;
    margin-bottom: 1.6rem;
}
.footer-bottom {
    text-align: center;
    padding-top: 1.6rem;
    border-top: 1px solid #A9A9A9;
    font-size: 1.4rem;
}
.facebook-link {
    align-items: center;
}
.facebook-link img {
    width: 90px;
    height: auto;
    gap: 5%;
}
.title-logo {
    max-width: 300px;
    height: auto;
}
.footer a {
    text-decoration: none;
    color: #3D3D3D;
}
.footer a:hover {
    opacity: 0.5;
}
.tsukuba img {
	max-width: 80px;
	height: auto;
}
.tsukuba-text {
	margin-top: 0;
	color: #614b37;
}
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 500px) {
    .dl-table {
        font-size: 0.8em;
    }
}