@charset "utf-8";
.c-btn__pageTop {
bottom: -20%;
position: fixed;
}
.hideSP {
display: block;
}
.showSP {
display: none;
}

.l-header__navi--sp {
width: 100%;
pointer-events: none;
}
.l-header__navi--sp *{
pointer-events: all;
}
.l-header__naviListSp{
width: 100%;
}

main,
main.indexMain,
main * {
box-sizing: border-box !important;
}

.l-header {
position: sticky;
}
.mainContents {
position: relative;
width: 100%;
}
.mainvisualArea {
background-repeat: no-repeat;
background-position: center top;
background-size: cover;
position: relative;
z-index: 0;
height: 800px;
padding: 10px;
}
.mainvisualArea.metalroad {
background-image: url(/infra/metalroad/images/main_visual.jpg);
}
.mainvisualArea.pole {
background-image: url(/infra/pole/images/main_visual.jpg);
}
.mainvisualArea.productlist {
background-image: url(/infra/products/images/main_visual.jpg);
}
.mainvisualArea.tokkou {
background-image: url(/infra/tokkou/images/main_visual.jpg);
}
.mainvisualArea.ontomo {
background-image: url(/infra/ontomo/images/main_visual.jpg);
}

.mainvisualArea::before {
content: "";
height: 100%;
width: 100vw;
background: rgba(33, 33, 33, 0.3);
position: absolute;
top: 0;
left: 0;
z-index: -1;
}

#contentsNav {
width: 100%;
background-color: #19537c;
position: sticky;
top: 125px;
left: 0;
right: 0;
opacity: 1;
z-index: 10;
}
#contentsNav.fadein{
opacity: 0;
top: 100px;
animation: contentsNaviAni 0.5s ease-out 0.5s forwards;
}
@keyframes contentsNaviAni{
0%{top: 100px; opacity: 0;}
100%{top: 125px; opacity: 1;}
}

#contentsNav ul {
max-width: 1105px;
background-color: #10354e;
margin: 0 auto;
display: flex;
gap: 1px;
padding-left: 0;
justify-content: space-between;
border-right: 1px solid #10354e;;
border-left: 1px solid #10354e;;
}
#contentsNav ul li {
flex-grow: 1;
position: relative;
}
#contentsNav ul li a {
display: block;
font-size: 14.5px;
color: #EEE;
padding: 6px 15px;
width: 100%;
background-color: #19537c;
height: 100%;
}
#contentsNav ul li.current a,
#contentsNav ul li a:hover {
color: #fff;
background-color: #368bc8;
}
#contentsNav.ontomoNav ul li a {
padding: 6px 10px;
display: flex;
align-items: center;
justify-content: center;
}



.pageTitleSet {
color: #fff;
max-width: 1105px;
margin: 0 auto;
text-align: center;
}
.pageTitleSet .textContents {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100%;
max-width: 1105px;
padding: 0 30px;
}

.pageTitleSet h2 {
font-size: 52px;
line-height: 1.3em;
font-family: "Noto Sans Japanese", "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", "メイリオ";
font-weight: 500;
letter-spacing: 0.1em;
margin-bottom: 40px;
text-shadow: 0 1px 2px rgba(0,0,0,.6);
opacity: 0;
animation: fadeIn 0.5s ease-out 1.5s forwards;
}
@keyframes fadeIn{
0%{opacity: 0;}
100%{opacity: 1;}
}

.pageTitleSet h2:has(.h2SubText) {
line-height: 1em;
}
.pageTitleSet h2 .h2SubText {
font-size: 24px;
}
.pageTitleSet .summary {
font-size: 24px;
font-family: "Noto Sans Japanese", "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", "メイリオ";
text-shadow: 0 1px 2px rgba(0,0,0,.6);
letter-spacing: 0.1em;
opacity: 0;
transform: translateY(20px);
animation: summaryFadein 1s ease-out 2.5s forwards;
}
.pageTitleSet .summary+.summary{
margin-top: 20px;
}

@keyframes summaryFadein{
0%{opacity: 0; transform: translateY(20px);}
100%{opacity: 1; transform: translateY(0px);}
}



.desBoxArea {
background: #31a8ff;
padding: 4.5em 1em;
}
.desText {
color: #fff;
font-size: 24px;
line-height: 2em;
}
.mw1105 {
max-width: 1105px;
margin: 0 auto;
}
.mw1105:has(.desBoxArea) {
margin-top: -80px;
}
/********************************
footer
********************************/
.infra--logo {
width: 14rem;
}


/********************************
pole products
********************************/
#contentsNav ul li#PoleProducts>a{
pointer-events: none;
}
#contentsNav ul li#PoleProducts ul,
#contentsNav ul li#PoleConst ul{
display: flex;
flex-direction: column;
position: absolute;
left: 0;
background-color: #DCDCDC;
gap: 1px;
opacity: 0;
display: none;
transform: translateY(-20px);
z-index: -1;
width: 100%;
}

#contentsNav ul li#PoleProducts ul a,
#contentsNav ul li#PoleConst ul a{
color: #19537c;
background-color: #EFEFEF;
text-align: left;
}
#contentsNav ul li#PoleProducts:hover ul,
#contentsNav ul li#PoleConst:hover ul{
display: flex;
animation: contNavSubNavAni .35s ease-out forwards;
}
#contentsNav ul li#PoleProducts:hover ul li a:hover,
#contentsNav ul li#PoleConst:hover ul li a:hover{
color: #FFF;
background-color: #368bc8;
}



@keyframes contNavSubNavAni{
0%{transform: translateY(-20px); opacity: 0;}
100%{transform: translateY(0px); opacity: 1;}
}

@media screen and (max-width: 1100px) {
.l-header {
min-width: auto;
}
.l-header__linkBox {
flex-direction: column-reverse;
}
.l-header__search{
margin-bottom: 10px;
}
.l-header__linkItems {
margin-right: 2rem;
}
.l-footer__gnaviItem--link {
min-width: auto;
}
.l-footer__gnaviItem {
border-right: 1px solid #fff;
width: calc(100% / 6);
}
}
@media screen and (max-width: 900px) {
.l-footer__gnaviItem--link {
padding: .4rem .6rem;
}
}
@media screen and (max-width: 768px) {
.hideSP {
display: none;
}
.showSP {
display: block;
}

.mainContents {
display: flex;
flex-direction: column;
}
#contentsNav {
top: 0;
opacity: 1;
animation: none;
}

#contentsNav ul {
flex-wrap: wrap;
}
#contentsNav ul li a {
font-size: 12.5px;
}
#contentsNav ul li ul{
flex-wrap: wrap;
border-bottom: 1px solid #10354e;
}

.mainvisualArea {
height: 450px;
}

.pageTitleSet h2 {
font-size: 34px;
}
.pageTitleSet .h2SubText {
font-size: 16px;
}
.pageTitleSet .summary {
font-size: 16px;
}
.desText {
font-size: 16px;
}
.infraContentMenu ul li a .enTitle {
font-size: 14px;
}
.infraContentMenu ul li a .jpTitle {
font-size: 18px;
}
.infraContentMenu ul li {
width: 100%;
}


/*pole*/


#contentsNav ul li#PoleProducts ul,
#contentsNav ul li#PoleConst ul{
width: auto;
left: auto;
right: 0;
}
#contentsNav ul li#PoleProducts ul a,
#contentsNav ul li#PoleConst ul a{
white-space: nowrap;
}

}
@media screen and (min-width: 769px) {
.l-footer__navListItem {
display: flex;
flex-wrap: wrap;
margin-bottom: .2rem;
padding: .5rem .5rem .5rem 13.5rem;
position: relative;
text-align: left;
}
}

/* sp menu, PC less than 600px */
@media screen and (max-device-width: 768px), screen and (max-width: 600px) {
#contentsNav{
width: 65vw;
max-width: 240px;
position: fixed;
left: auto;
right: -65vw;
z-index: 500;
height: 100vh;
padding-left: 3px;
transition: all .5s;
animation: none;
}
#contentsNav::before{
position: absolute;
top: 80px;
left: -40px;
display: block;
content: "";
width: 40px;
height: 40px;
background-color: #19537c;
border-radius: 6px 0 0 6px;
}
#contentsNav::after{
position: absolute;
top: 90px;
left: -30px;
display: block;
content: "";
width: 20px;
height: 20px;
border-left: 3px solid #FFF;
border-bottom: 3px solid #FFF;
transform: rotate(45deg);
transition: all .3s;
}
#contentsNav>ul{
flex-direction: column;
gap: 0;
border: none;
background-color: transparent;
border-top: 1px solid #FFF;
}
#contentsNav>ul>li{
border-bottom: 1px solid #FFF;
}
#contentsNav>ul>li:has(ul){
border-bottom: none;
}
#contentsNav>ul>li >ul:hover{
gap: 1px;
}
#contentsNav>ul>li >ul li{
/*border-bottom: 1px solid #DDD;*/
}
#contentsNav>ul>li >ul li:last-child{
border-bottom: none;
}
#contentsNav ul li a{
background-color: transparent;
}

#contentsNav ul li#PoleProducts ul,
#contentsNav ul li#PoleConst ul{
display: flex;
flex-direction: column;
position: static;
opacity: 1;
transform: none;
padding-left: 15px;
border: none;
}
#contentsNav ul li#PoleProducts:hover ul,
#contentsNav ul li#PoleConst:hover ul{
animation: none;
}


#contentsNav.deviceActive{
right: 0;
}
#contentsNav.deviceActive::after{
transform: rotate(-135deg);
}
}

@media screen and (max-device-width: 768px) {
#contentsNav{
right: -65vw;
padding-top: 70px;
}
}
@media screen and (max-width: 600px) {
#contentsNav{
right: -240px;
padding-top: 100px;
}
}