.page_title {
    width: 100%;
    height: 500px;
    margin-bottom: 2rem;
}
.page_title_image {
    position: relative;
    overflow: hidden;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 100%;
}
.page_title_text {
    margin-top: 200px;
    text-align: center;
    color: white;
    font-weight: bold;
    font-size: 2.4rem;
    font-family: serif;
    text-shadow: 1px 1px 3px black;
}
.page_title_text1 {
    margin: 220px auto 0 auto;
    max-width: 400px;
    text-align: center;
    color: white;
    font-weight: bold;
    font-size: 2.8rem;
    font-family: serif;
    text-shadow: 1px 1px 2px black;
    border-bottom: 2px solid white;
}
.page_title_text2 {
    margin: 10px auto 0 auto;
    text-align: center;
    color: white;
    font-weight: bold;
    font-size: 1.6rem;
    font-family: sans-serif;
    text-shadow: 1px 1px 2px black;
}
@media screen and (max-width:768px) {
    .page_title {
        width: 100%;
        height: 300px;
        margin-bottom: 1rem;
    }
    .page_title_text {
        margin-top: 160px;
        font-size: 2rem;
    }
    .page_title_text1 {
        margin-top: 160px;
        font-size: 2rem;
        max-width: 250px;
    }
    .page_title_text2 {
        font-size: 1.2rem;
    }
}
.main_container {
    padding:1rem 1rem;
    max-width: 1000px;
    margin:0 auto 0 auto;
}

.data_table {
    max-width: 1200px;
    margin: 2rem 0;
}
.data_table td {
    text-align: center;
    padding: 0.5rem;
    background-color: transparent;
    vertical-align: middle;
}
.data_table th {
    padding: 0.5rem;
    vertical-align: middle;
    background-color: transparent;
    text-align: center;
}
.data_table tr:first-child th {
}
.data_table tr:hover {
    background-color: #ffeeee;
}

.table_responsive {
    display: block;
    width: 100%;
    overflow-x: auto;
    overflow-y: auto;
    scrollbar-width: thin;
}

.table_responsive > table {
    margin-top: 0;
}

@media screen and (max-width:768px) {
    .data_table th, td {
        padding: 0.5rem 0.1rem;
    }
    .table_responsive:before {
        font-weight: bold;
        content: 'scroll →';
        color: var(--2nd-color);
        -webkit-animation:blink 1.5s ease-in-out infinite alternate;
        -moz-animation:blink 1.5s ease-in-out infinite alternate;
        animation:blink 1.5s ease-in-out infinite alternate;
    }
}

@-webkit-keyframes blink{
    0% {opacity:0.2;}
    100% {opacity:1;}
}
@-moz-keyframes blink{
    0% {opacity:0.2;}
    100% {opacity:1;}
}
@keyframes blink{
    0% {opacity:0.2;}
    100% {opacity:1;}
}

.table_fix_wide{
    width:920px;
}
.table_fix{
    width:740px;
}
.table_fix_narrow{
    width:600px;
}

.diagonal tr:first-child th:first-child {
    background-image: linear-gradient(
            to right top, transparent calc(50% - 0.5px), #eaeaea 50%, #eaeaea calc(50% + 0.5px), transparent calc(50% + 1px)
    );
    display: grid;
    width: max-content;
    justify-content: space-between;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 1fr;
}
.col-header {
    grid-column-start: 2;
    text-align: right;
}
.row-header {
    grid-column-start: 1;
}

.explain {
    color: var(--main-color);
}

.title1{
    margin:1rem 0 0.5rem 0;
    font-size:1.6em;
    font-family: serif;
    font-weight: bold;
    position: relative;
    padding-bottom: 5px;
    border-bottom:1px solid lightgray;
}

.title1::before{
    content: '';
    position: absolute;
    bottom: -2px;
    width: 150px;
    height: 2px;
    background: var(--main-color);
}

.title2{
    margin:2rem 0 1rem 0;
    font-size:1.2em;
    font-family: serif;
    font-weight: bold;
    border-left:6px solid var(--main-color);
    border-bottom:1px solid lightgray;
    padding-left: 0.7rem;
}

.align_right {
    text-align: right;
}

ul.disc {
    list-style: disc;
    margin: 1rem 0;
}
ul.disc li {
    margin: 0.3rem 0;
    text-indent: -1em;
    padding-left: 1em;
}
ul.disc li::before {
    content: '●';
    color: var(--main-color);
}