html {
    height: 100% !important;
    width: 100%;
    /* font-size: 62.5%; /* 10px */
    font-size: 75%;
}

body {
    height: 100%;
    width: 100%;
    font-family: "Noto Sans JP", "ヒラギノ角ゴ ProN W3",
        "Hiragino Kaku Gothic ProN",
        "游ゴシック",
        YuGothic,
        "メイリオ",
        Meiryo,
        sans-serif;
    ;
    font-size: 1.5rem;
    position: relative;
    min-height: 100%;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: auto;
    color: #333;
    background-color: #fff;
}

body.active {
    overflow: hidden;
}

.spacer {
    padding: 5rem 0;
}

.spacer_s {
    padding: 2.5rem 0;
}

nav.navbar {
    padding-top: 0;
}

.navbar-brand img {
    width: 15rem;
}

.nav_telwel {
    background-color: #fff;
    border-radius: 0 0 1rem 1rem;
    padding: 1rem 2rem;
    position: relative;
	box-shadow: 0px 5px 10px 0 rgba(0, 160, 239, 0.05);
}

.nav-item {
    margin-right: 1rem;
    font-size: 1.3rem;
}

header {
    height: 100rem;
    padding: 10rem 5rem;
    position: relative;
    background-color: #f9fcfd;
    background-image: url("img/mv.svg");
    background-repeat: no-repeat;
    background-position: 100% 30%;
    background-size: 60%;
}

header .header_p_1 {
    font-size: 4rem;
    font-weight: bold;
    color: #1595dc;
}

header .header_p_2 {
    font-size: 2.2rem;
    font-weight: bold;
}

header .header_p_3 {
    font-size: 1.7rem;
    font-weight: bold;
}

header .header_p_4 {
    font-size: 2rem;
    color: #1595dc;
    font-weight: bold;
}

header .header_p_4 span {
    background: linear-gradient(transparent 70%, rgba(255, 235, 0, 1) 0%);
}

header .header_p_5 {
    font-size: 1rem;
}

header p {
    line-height: 1.2;
}

.header_p_2 .chusyaku,
#section_1 .chusyaku {
    font-size: 1rem;
    vertical-align: top;
}

.header_p_1 .chusyaku {
    font-size: 3rem;
    vertical-align: top;
}

.telwel_trans_wrapper {
    position: relative;
    height: 100%;
}

.telwel_trans_wrapper p {
    transform: rotate(90deg);
    top: 10rem;
    left: 15rem;
    position: absolute;
    font-size: 1rem;
    margin-bottom: 0;
}

.telwel_trans {
    width: 0.7rem;
    height: 10rem;
    background-color: #f9fcfd;
    position: absolute;
    top: 13rem;
    left: 16.5rem;
    overflow: hidden;
}

.telwel_trans_border {
    width: 0.1rem;
    height: 10rem;
    background-color: #666;
    position: absolute;
    left: 0.3rem;
    top: 0;
}

.telwel_trans_ball {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background-color: #666;
    position: absolute;
    top: 0;
    left: 0.1rem;
    animation: telwel_trans 2.5s infinite;
}

@-webkit-keyframes telwel_trans {
    0% {
        -webkit-transform: translate(0, -0.5rem);
        opacity: 0;
    }

    75% {
        -webkit-transform: translate(0, 10rem);
        opacity: 1;
    }

    100% {
        -webkit-transform: translate(0, 11rem);
        opacity: 0;
    }
}

#section_1 {
    background: url("img/obi_02.png");
    background-size: cover;
    background-position: bottom;
    padding-bottom: 5rem;
}

#section_1 h2 {
    color: #fff;
    font-weight: bold;
    font-size: 2.4rem;
}

#section_1 h2 span.h2_wrapper {
    position: relative;
}

#section_1 h2 span.h2_wrapper::before {
    content: url('img/triangle_1.svg');
    position: absolute;
    width: 4rem;
    top: 0;
    left: -5rem;
}

#section_1 h2 span.h2_wrapper::after {
    content: url('img/triangle_2.svg');
    position: absolute;
    width: 4rem;
    top: 0;
    right: -5rem;
}

#section_1 h2 span.h2_inner {
    font-size: 2.8rem;
    border-bottom: 0.8rem solid rgba(255, 235, 0, 1);

}

#section_1 h3 {
    color: #fff;
    font-weight: bold;
    font-size: 2.2rem;
}

#section_1 p {
    color: #fff;
    font-size: 1.2rem;
    margin-bottom: 0;
}

#section_2 h2 {
    color: #1595dc;
    font-weight: bold;
    position: relative;
}

#section_2 h2::after {
    content: "";
    width: 0.1rem;
    height: 6rem;
    background-color: #1595dc;
    position: absolute;
    left: 50%;
    top: 3rem;
}

#section_3 {
    background-image: url("img/back_01.svg");
    background-repeat: no-repeat;
    background-size: cover;
    padding-top: 10rem;
    padding-bottom: 10rem;
}

#section_3 .youtube {
    width: 100%;
    aspect-ratio: 16 / 9;
}

#section_3 .youtube iframe {
    width: 100%;
    height: 100%;
}

#section_4 h2,
#section_6 h2,
#section_7 h2,
#section_8 h2 {
    font-weight: bold;
    font-size: 2.5rem;
}

#section_4 h2 small,
#section_6 h2 small,
#section_7 h2 small {
    color: #1595dc;
    font-weight: bold;
    font-size: 1.2rem;
    position: relative;
}

#section_8 h2 {
    color: #fff;
}

#section_8 h2 small {
    color: #fff;
    font-weight: bold;
    font-size: 1.2rem;
}

#section_4 h2 small::after,
#section_6 h2 small::after,
#section_7 h2 small::after {
    content: "";
    background-color: #1595dc;
    width: 5rem;
    height: 0.1rem;
    position: absolute;
    top: 0.8rem;
    right: -6rem;
}

#section_4 h3,
#section_6 h3,
#section_7 h3 {
    font-weight: bold;
    font-size: 2rem;
}

#section_4 p,
#section_6 p {
    font-size: 1.2rem;
}

#section_5 {
    background: linear-gradient(to bottom, #eaf3f9 70%, transparent 70%);

}

#section_5 h2 {
    font-weight: bold;
}

#section_5 h2 small {
    color: #1595dc;
    font-weight: bold;
    font-size: 1.2rem;
}

.section_5_block {
    background-color: #fff;
    border-radius: 1.5rem;
    box-shadow: 0 16px 32px rgba(0, 78, 255, .1);
}

.section_5_block .col-md-4 {
    padding: 2rem;
}

.section_5_block img {
    width: 50%;
    margin: 0 auto;
}

#section_5 h3 {
    font-weight: bold;
    font-size: 1.4rem;
    margin-top: 1rem;
}

#section_5 p {
    font-size: 1rem;
}

#section_6 ul {
    padding-left: 2rem;
}

#section_6 ul li {
    font-size: 1rem;
    position: relative;
}

#section_6 ul li::before {
    content: "";
    width: 1rem;
    height: 1rem;
    background-color: #1595dc;
    position: absolute;
    border-radius: 50%;
    left: -1.5rem;
    top: 0.3rem;
}

#section_7 {
    background-color: #eaf3f9;
}

.polygon {
    clip-path: polygon(50% 100%, 0 0, 100% 0);
    width: 18rem;
    height: 6rem;
    background-color: #eaf3f9;
}

#section_7 h3 {
    color: #1595dc;
}

#section_7 h3 span.h3_wrapper {
    position: relative;
}

#section_7 h3 span.h3_wrapper::before {
    content: url('img/triangle_1.svg');
    position: absolute;
    width: 4rem;
    top: 0;
    left: -4rem;
}

#section_7 h3 span.h3_wrapper::after {
    content: url('img/triangle_2.svg');
    position: absolute;
    width: 4rem;
    top: 0;
    right: -4rem;
}

#section_7 h3 span.h3_inner {
    border-bottom: 0.8rem solid rgba(255, 235, 0, 1);
}

.timeline {
    padding-left: 8rem;
}

.timeline-item {
    background-color: #fff;
    border-radius: 1rem;
    padding: 2rem;
    position: relative;
}

.timeline-item p {
    font-size: 1.2rem;
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -10rem;
    top: calc(50% - 2.5rem);
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: linear-gradient(to right, #0093e9, #87e1e1);
    display: flex;
    /* Flexboxを使用 */
    justify-content: center;
    /* 水平方向に中央揃え */
    align-items: center;
    z-index: 10;
    line-height: 2;
    color: #1595dc;
    font-weight: bold;
}

.timeline-marker-number::after {
    width: 4rem;
    height: 4rem;
    position: absolute;
    z-index: -1;
    margin: auto;
    background-color: #fff;
    content: "";
    inset: 0;
    border-radius: 50%;
}

.timeline-item:after {
    content: "";
    width: 3px;
    background: #44bbe5;
    display: block;
    position: absolute;
    top: 0;
    bottom: -6rem;
    left: -7.5rem;
    z-index: 5;
}

.timeline-item.timeline-item-first:after {
    top: 50%;
}

.timeline-item.timeline-item-last:after {
    bottom: calc(50% - 1.5rem);
}

.timeline-marker_last {
    color: #fff;
    background: linear-gradient(to right, #0093e9, #87e1e1);
}

.badge.rounded-pill.text-bg-light {
    background-color: #fff !important;
    border: 1px solid #333;
    font-weight: normal;
}

#section_8 {
    background: url("img/obi_03.png");
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

#section_8 p {
    color: #fff;
}

#section_9 p {
    font-weight: bold;
    color: #1595dc;
    font-size: 2rem;
    margin-bottom: 0;
}

a.btn.btn-warning {
    color: #fff;
    font-weight: bold;
    background-color: #ffd307;
    border: #ffd307 0.1rem solid;
    padding: 1rem 6rem 1rem 2rem;
    position: relative;
    transition: all 0.3s;
}

a.btn.btn-light {
    font-weight: bold;
    position: relative;
    transition: all 0.3s;
    padding: 1rem 6rem 1rem 2rem;
    min-width: 188px;
}

a.btn.btn-warning:hover,
a.btn.btn-light:hover {
    opacity: 0.7;
    transition: all 0.3s;
}

a.btn.btn-warning::after,
a.btn.btn-light::after {
    font-family: 'bootstrap-icons';
    content: "\F134";
    position: absolute;
    top: calc(50% - 0.6rem);
    right: 2rem;
    margin-top: -0.8rem;
    transition: right 0.3s ease;
    font-size: 2rem;
}

a.btn.btn-warning:hover::after,
a.btn.btn-light:hover::after {
    right: 0.5rem;
}

footer {
    background-color: #06aeee;
    padding-top: 2rem;
    padding-bottom: 2rem;
}

footer p {
    color: #fff;
    margin-bottom: 0;
	font-size: 1rem;
}

footer .container {
    position: relative;
}

.scroll_top {
    width: 3rem;
    position: absolute;
    right: 1rem;
    top: -3.5rem;
}

.link_block_wrapper {
    width: 8rem;
    position: fixed;
    right: 0;
    top: 20rem;
    z-index: 100;
}

.link_block {
    background-color: #a2e0ed;
    border-radius: 1rem 0 0 1rem;
    padding: 1rem 0;
}

.link_block img {
    width: 4rem;
    height: auto;
}

.link_block p {
    font-size: 1rem;
    margin-bottom: 0;
}

.humburger {
    display: none;
}

@media (min-width: 1400px) {
    .container {
        max-width: 1140px;
    }
}

@media (max-width: 1198px) {
    header {
        height: 80rem;
    }

    #section_1 h2::before {
        left: 2rem;
    }

    #section_1 h2::after {
        right: 2rem;
    }

    #section_1 h3 br {
        display: none;
    }

    #section_7 h3::before {
        left: 10rem;
    }

    #section_7 h3::after {
        right: 10rem;
    }
}

@media (max-width: 991px) {
    .humburger {
        height: 48px;
        width: 48px;
        position: absolute;
        display: block;
        top: 1rem;
        right: 1rem;
    }

    .humburger .l1,
    .humburger .l2,
    .humburger .l3 {
        position: absolute;
        display: block;
        margin: auto;
        top: 48%;
        left: 15%;
        height: 3px;
        width: 70%;
        background-color: #0087d5;
        transition: all .2s ease-out;
    }

    .humburger .l1 {
        top: 23%;
    }

    .humburger .l3 {
        top: 73%;
    }

    .humburger.active .l1 {
        transform: rotate(45deg);
        top: 48%;
    }

    .humburger.active .l2 {
        opacity: 0;
    }

    .humburger.active .l3 {
        transform: rotate(-45deg);
        top: 48%;
    }

    .sp_nav {
        position: fixed;
        top: 6.5rem;
        left: 0;
        width: 100%;
        background-color: #f9fcfd;
        padding: 0;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.5s ease, visibility 0.5s ease;
        z-index: 1000;
        overflow-y: auto;
        /* 縦方向のスクロールを許可 */
        max-height: calc(100vh - 6.5rem);
        /* ビューポートの高さからトップ位置を引いた値 */
        -webkit-overflow-scrolling: touch;
        /* スムーズスクロールの有効化 */

    }

    .sp_nav.active {
        opacity: 1;
        visibility: visible;
        padding-bottom: 10rem;
    }

    .sp_nav ul.navbar-nav li.nav-item {
        border-bottom: 1px solid #6e767a;
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
        padding-left: 2rem;
    }

    .sp_nav ul.navbar-nav li.nav-item a {
        font-weight: bold;
        font-size: 1.6rem;
    }

    .sp_nav ul.navbar-nav li.nav-item a small {
        color: #1595dc;
        font-weight: bold;
        font-size: 1.22rem;
    }

    .sp_nav a.btn.btn-warning,
    .sp_nav a.btn.btn-light {
        box-shadow: 0 16px 32px rgba(0, 78, 255, .1);
    }

    .sp_nav p {
        margin-bottom: 0;
    }

    header {
        background-position: bottom 0 right 0;
        background-size: 65%;
        height: 80rem;
        padding: 10rem 1rem;
    }

    header .header_p_1 {
        font-size: 3.5rem;
    }

    header .header_p_2 {
        font-size: 2rem;
    }

    header .header_p_3 {
        font-size: 1.5rem;
    }

    header .header_p_4 {
        font-size: 2rem;
        color: #1595dc;
        font-weight: bold;
    }

    .telwel_trans_wrapper p {
        top: 5rem;
        left: 1rem;
    }

    .telwel_trans {
        top: 8rem;
        left: 2.5rem;
    }

    #section_1 h2::before {
        left: 6rem;
    }

    #section_1 h2::after {
        right: 6rem;
    }

    #section_1 h2 span.h2_inner {
        border-bottom: 0.8rem solid rgba(255, 235, 0, 1);
    }

    #section_3 {
        padding-top: 5rem;
        padding-bottom: 5rem;
    }

    #section_6 img {
        width: 60%;
        margin: 0 auto;
        display: block;
    }

    #section_7 h3::before {
        left: 13rem;
    }

    #section_7 h3::after {
        right: 13rem;
    }
}

@media (min-width: 768px) {
    #section_5 .section_5_block .row>div:nth-child(4) {
        border-bottom: none !important;
    }

    #section_5 .section_5_block .row>div:nth-child(5) {
        border-bottom: none !important;
    }
}

@media (max-width: 767px) {
    .spacer {
        padding: 2.5rem 0;
    }

    .spacer_s {
        padding: 1.25rem 0;
    }

    a.navbar-brand {
        margin: auto;
    }

    header {
        background-size: 70%;
    }

    header .header_p_1 {
        font-size: 3rem;
    }

    header .header_p_2 {
        font-size: 1.6rem;
    }

    header .header_p_3 {
        font-size: 1.2rem;
    }

    header .header_p_4 {
        font-size: 1.6rem;
        color: #1595dc;
        font-weight: bold;
    }

    #section_1 h2 {
        font-size: 2rem;
    }

    #section_1 h2 span {
        font-size: 2.2rem;
    }

    #section_1 h2::before {
        left: 2rem;
    }

    #section_1 h2::after {
        right: 2rem;
    }

    #section_1 h3 {
        font-size: 1.8rem;
    }

    #section_2 img {
        width: 15rem;
        display: block;
        margin: 0 auto;
    }

    .section_5_block {
        width: 80%;
        margin: 0 auto;
    }

    #section_5 .section_5_block .row .col-md-4 {
        border-right: none !important;

    }

    #section_6 h3 {
        font-size: 1.8rem;
        margin-top: 2rem;
    }

    #section_7 h3::before {
        left: 4rem;
    }

    #section_7 h3::after {
        right: 4rem;
    }

    .timeline {
        padding-left: 6rem;
    }

    .timeline-marker {
        left: -6rem;
    }

    .timeline-item:after {
        left: -3.5rem
    }

    #section_9 p {
        font-size: 1.6rem;
    }

    .link_block_wrapper {
        width: 6rem;
    }

    .link_block p {
        font-size: 0.8rem;
    }
}

@media (max-width: 575px) {
    header {
        background-size: 70%;
        height: 60rem;
    }

    #section_1 h2 span.h2_wrapper {
        font-size: 1.6rem;
    }

    #section_1 h2 span.h2_inner {
        font-size: 1.8rem;
        border-bottom: 0.6rem solid rgba(255, 235, 0, 1);
    }

    #section_1 h2 span.h2_wrapper::before {
        width: 2.5rem;
        left: -3rem;
    }

    #section_1 h2 span.h2_wrapper::after {
        width: 2.5rem;
        right: -3rem;
    }

    #section_1 h3 {
        font-size: 1.5rem;
    }

    #link_1.spacer {
        padding: 5rem 0;
    }

    #section_7 h3 {
        font-size: 1.6rem;
    }

    #section_7 h3 span.h3_wrapper::before {
        width: 2.5rem;
        left: -3rem;
    }

    #section_7 h3 span.h3_wrapper::after {
        width: 2.5rem;
        right: -3rem;
    }

    .timeline-marker {
        left: -5rem;
        width: 4rem;
        height: 4rem;
    }

    .timeline-marker::after {
        width: 3rem;
        height: 3rem;
    }

    .timeline-item:after {
        left: -3rem;
    }
}