body {
    background-color: #f2f2f2;
    color: #3D3D3D;
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    margin: 0;
    padding: 0;
}
a {
    text-decoration: none;
}
header {
    background-image: url('../images/highschool-top.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 50vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 0 2rem;
    overflow:hidden;
}
.header-title {
    position: absolute;
    top: 40%;
    left: 25%;
    transform: translate(-50%, -50%);
    margin: 0 1rem;
    z-index: 1;
}
header h5 {
    font-size: calc(0.35vw + 1rem);
    margin: 0;
}
.yumeho-jr {
    position: absolute;
    top: 60%;
    left: 70%;
    transform: translate(-50%, -50%);
}
.yumeho-jr img {
    max-width: 400px;
}

@media (min-width: 1560px) {
    .header-title {
        position: absolute;
        top: 30%;
        left: 35%;
        transform: translate(-50%, -50%);
    }
    .yumeho-jr {
        top: 55%;
    }
    .yumeho-jr img {
        max-width: 600px;
    }
}
@media (max-width: 1200px) {
    .header-title {
        position: absolute;
        width: 90%;
        top: 20%;
        left: 50%;
        margin: 0;
    }
    header h1 {
        margin: 0;
    }
    .yumeho-jr {
        position: absolute;
        top: 65%;
        left: 50%;
    }
    .yumeho-jr img {
        max-width: 320px;
    }
}
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
    overflow: hidden;
}
.text {
    max-width: 90%;
    margin: 0 auto;
    text-align: left;
}
@media screen and (max-width: 768px) {
    .container {
        max-width: 90%;
        margin: 0 auto;
        padding: 0;
    }
}
.navigation-button {
    text-align: center;
    margin-top: 1rem;
}
a.nav-btn {
    display: inline-block;
    text-align: center;
    vertical-align: middle;
    width: 130px;
    margin-bottom: 1rem;
    font-weight: bold;
    background: linear-gradient(to top, #BED7E6, #C7E0F0);
    color: #3D3D3D;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, .1);
    -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, .1);
    transition: 0.5s;
    padding: 6px 10px;
}

a.nav-btn:hover{
    opacity:0.5;
}

@media (max-width: 768px) {
    a.nav-btn {
        display: block;
        width: 200px;
        margin: 0 auto;
    }
}
.message {
    font-size: 1.2rem;
    text-align: center;
}
.message img {
    max-width: 60%;
    height: auto;
    margin: auto;
    display: block;
}
@media screen and (max-width: 768px) {
    .message {
    font-size: 1rem;
}
    .message img {
        max-width: 100%;
        height: auto;
    }
}
.slogan {
    margin: 2rem 1rem 1rem 1rem;
    border-bottom: 2px solid #08283C;
    font-weight: bold;
}
.item {
    font-size: 1.2rem;
    text-align: center;
    align-items: center;
    max-width: 90%;
    margin: 0 auto;
    padding-bottom: 1.2rem; 
    margin-bottom: 1rem;
    border: 1px solid #E6E6E6;
    border-radius: 5px;
    background-color: #ffffff;
    box-shadow: 0 4px 4px rgb(0 0 0 / 2%), 0 2px 3px -2px rgba(0 0 0 / 5%);
}
.item p {
    margin-bottom: 0;
    padding: 0 1rem;
}

.item h5 {
    margin: 1rem 0 0 0;
}

@media screen and (max-width: 768px) {
    .item p {
        font-size:0.9em;
    }
}

.shadow_btn {
    display: inline-block;
    min-width: 200px; /* ボタン幅 */
    margin: 0 auto;
    border: 2px solid #A6D8FF; /* 線幅・種類・色 */
    border-radius: 0;
    color: #000;
    background: #D2E6FF; /* 背景色 */
    -webkit-box-shadow: 4px 4px 0 #A6D8FF; /* 影の距離・色 */
    box-shadow: 4px 4px 0 #A6D8FF; /* 影の距離・色 */
    padding: 0.8em 1.4em;
    text-align: center;
    transition: 0.3s;
}

a.shadow_btn {
    font-size: 1rem;
}


/* マウスオーバーした際のデザイン */
.shadow_btn:hover {
    -webkit-box-shadow: -4px -4px 0 #A6D8FF; /* 影の距離・色 */
    box-shadow: -4px -4px 0 #A6D8FF; /* 影の距離・色 */
}

.comment {
    margin: 0;
    font-size: 0.8em;
}
.footnote {
    max-width: 80%;
    margin: 0 auto;
    text-align: left;
    font-size: 0.8em;
}

@media screen and (max-width: 768px) {
    .item img {
        width: 100%;
        height: auto;
    }
}
    .category-block {
        width: 90%;
        margin: 1rem auto;
        border-collapse: collapse;
    }
    .category-block th {
        background-color: #E0E0E0;
        width: 200px;
        margin: 0 auto;
        padding: 5px 10px;
        border: solid 1px #EBEBEB;
    }
    .category-block td {
        border: solid 1px #EBEBEB;
    }
    @media screen and (max-width: 768px) {
        .category-block th, .category-block td {
            border: none;
            display: block;
            width: 90%;
            margin: 0 auto;
        }
        .category-block td {
            border: none;
            padding: 1rem;
        }
    }
.address {
    max-width: 270px;
    margin: 0 auto;
}
.address p {
    text-align: left;
    margin: 0.4rem;
}
.bottom-space {
    padding-bottom: 1rem;
}
.footer {
    background-color: #C7E0F0;
    color: #3D3D3D;
    padding: 1.6rem;
    text-align: center;
}

.host{
    padding: 0 1rem;
}

.host p{
    font-size: calc(0.3vw + 1rem);
}

.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 {
    color: #3D3D3D;
}
.footer a:hover {
    opacity: 0.5;
}
.tsukuba-text {
	margin-top: 0;
	color: #614b37;
}
.tsukuba img {
	max-width: 80px;
	height: auto;
}
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}
h2 {
    position: relative;
    padding: 0.5rem .5rem;
    color: #5B4135;
    font-size: 1.6rem;
    text-align: center;
}
h2:after {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    content: '';
    background-image: -webkit-gradient(linear, left top, right top, from(#B0D7F8), to(#B0E0B7));
    background-image: -webkit-linear-gradient(left, #B0D7F8 0%, #B0E0B7 100%);
    background-image: linear-gradient(to right, #B0D7F8 0%, #B0E0B7 100%);
}
h3 {
    padding: 0.6rem 1.2rem;
    margin: 0 auto;
    background-color: #C7E0F0;
}
h4 {
    position: relative;
    line-height: 1.4;
    padding: 0.25em 1em;
    display: inline-block;
}
h4:before, h4:after {
    content: '';
    width: 1.4rem;
    height: 2rem;
    position: absolute;
    display: inline-block;
}
h4:before {
    border-left: solid 1px #5B4135;
    border-top: solid 1px #5B4135;
    top: 0;
    left: 0;
}
h4:after {
    border-right: solid 1px #5B4135;
    border-bottom: solid 1px #5B4135;
    bottom: 0;
    right: 0;
}
.col1, .col2 {
    width: 50%;
}
.information {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    padding: 2rem 0;
}
.association-info {
    flex: 1;
    padding: 0 0 1rem 0;
}

.association-info p {
    font-size: 1.2rem;
}
.association {
    font-size: 1.6rem;
}
a.association {
    color: #3D3D3D;
    font-weight: bold;
}
a.association:hover {
    opacity: 0.5;
}
.button {
    display: block;
    padding: 8px;
    margin: 3px;
    background-color: #B0E0B7;
    color: #3D3D3D;
    text-align: center;
    flex: 10%;
    font-size: 0.8em;
    font-family: "Roboto", Arial, sans-serif;
    font-weight: bold;
}
.club-link {
    color: #E09953;
    font-weight: bold;
}
.panel {
    border: 0.5px solid #3D3D3D;
    background: #F0FFFF;
    padding: 1rem;
    margin: 1rem auto;
    max-width: 600px;
}
@media screen and (max-width: 768px) {
    .panel {
        max-width: 375px;
    }
}
.panel h1 {
    font-size: 1.2rem;
    margin: 0;
    padding: 0;
}
.link-button {
    background: #D8E6E6;
    color: #3D3D3D;
    font-size: 0.9em;
    font-family: 'Hiragino Kaku Gothic ProN', sans-serif;
    padding: 5px 10px;
    cursor: pointer;
    display: block;
    text-align: center;
}
.mail {
    width: 2rem;
    height: 2rem;
    margin-right: 0.4rem;
}