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: 20px 0;
}

h2 {
    margin: 2rem 0 0.6rem 0;
}

h3 {
    font-size: 1.2rem;
    margin-bottom: 0;
}
h4 {
    font-size: 1.4rem;
    padding: 0 1.5rem;
    border-left: 5px solid #abc470;
    margin-bottom: 0.6rem;
}
p {
    font-size: 1.2rem;
    margin-top: 0;
    margin-bottom: 0;
}
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem 2rem 1rem;
}

.message{
    max-width: 90%;
    margin: 0 auto;
}
.program {
    max-width: 90%;
    margin: 0 auto;
}

table.detail-table {
    width: 100%;
    margin: 0 auto;
    border-collapse: collapse;
}
.detail-table th {
    border: 1px solid #ccc;
    padding: 0.6rem 1rem;
    text-align: center;
}
.detail-table td {
    background-color: #fafafa;
    border: 1px solid #ccc;
    padding: 0.6rem 1rem;
    text-align: center;
}

table.main-table {
    width: 100%;
    margin: 0 auto;
    border-collapse: collapse;
}
.main-table th {
    border: 1px solid #ccc;
    padding: 0.6rem 1rem;
    text-align: center;
}
.main-table td {
    background-color: #fafafa;
    border: 1px solid #ccc;
    padding: 0.6rem 1rem;
    text-align: left;
}

.center{
    text-align: center;
}

.address-link {
    display: inline-block;
    margin: 10px 0 5px 0;
    width: 250px;
    padding: 10px 15px;
    text-decoration: none;
    text-align: center;
    color: #000; /* 黒文字 */
    background-color: #ffffeb; /* グレー背景 */
    border: 1px solid #CCC; /* ボーダー追加 */
    border-radius: 5px;
    font-size: 1rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.address-link:hover {
    background-color: #bbb; /* ホバー時の背景色 */
    color: #000; /* ホバー時も黒文字 */
}

.notes{
    padding: 0.3rem 0.3rem 0.3rem 1rem;
    font-size: 0.9rem;
    font-style:italic;
}

.warning{
    font-size: 0.9rem;
    color: #F73B3C;
}

.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;
	font-size: 0.8rem;
}
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}
/* メディアクエリ */
@media screen and (max-width: 768px) {
    /* 768px以下の画面幅に対するスタイル */
    header {
        padding: 1rem 0;
    }
}