/* CSS Document */
html {
  scroll-behavior: smooth;
}

body {
  font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
  position: relative;
}
.news-ttl a[target="_blank"]::after {
  content: url("/iron_researchcenter/common/img/external_icon.gif");
  display: inline-block;
  width: 16px;
  height: 15px;
  margin: 0 3px;
}

/*======================
header
======================*/
header {
  position: relative;
}
.header_logo_green {
  position: absolute;
  left: 10%;
  top: 40px;
}

/*======================
main
======================*/
main {
  background: #F0F0F0;
}

/*パンくずリスト*/
.breadcrumbs {
  width: 95%;
  margin: 15px auto 40px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
}
.breadcrumbs a {
  text-decoration: underline;
}
.breadcrumbs a:hover {
  text-decoration: none;
}
.breadcrumbs li {
  display: flex;
  align-items: center;
}
.breadcrumbs li::after {
  content: "";
  width: 8px;
  height: 8px;
  border-top: 1px solid #000;
  border-right: 1px solid #000;
  transform: rotate(45deg);
  margin: 0 10px;
}
.breadcrumbs li:nth-last-child(1)::after {
  content: inherit;
}

/* メインビジュアル */
.mainvisual {
  width: 100%;
  height: 519px;
  padding: 0 5%;
  background-color: #fff;
  background: url("/iron_researchcenter/img/mv.jpg")no-repeat bottom center;
  background-size: cover;
  display: flex;
  align-items: center;
  box-sizing: border-box;
}
.mainvisual_inner {
  max-width: 1024px;
  width: 100%;
  margin: auto;
  transform: translateY(-35%);
}
.hgroup {
  color: #006937;
  line-height: 1.8;
  margin-bottom: 30px;
}
.hgroup_main {
  font-size: 18px;
  font-weight: bold;
}
.hgroup_sub {
  font-family: "Times New Roman";
  font-size: 40px;
}
a.mainvisual_btn-en {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  font-weight: bold;
  width: 128px;
  height: 25px;
  background: #006937;
}
a.mainvisual_btn-en::after {
  content: "";
  width: 8px;
  height: 8px;
  border-top: 1px solid #fff;
  border-right: 1px solid #fff;
  transform: rotate(45deg);
  margin-left: 10px;
}

a.mainvisual_btn-en:hover {
  text-decoration: none;
  opacity: 0.8;
}

/*====================== ここから中身編集 ======================*/
.nav-btn-list {
  box-sizing: border-box;
    width: 100%;
   padding: 0 7%;
    margin: 0px auto 40px;
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    flex-wrap: wrap;
    background: #2a880c;
}
.nav-btn {
  /*width: 15.5%;*/
  width: 20.0%;
  text-align: center;
}
.nav-btn a {
    position: relative;
    display: block;
    background:#2A880C;
    color: #fff;
    width: 100%;
    padding: 24px 0px 25px 0;
  font-size: 14px;
}
li.nav-btn.a_down a {
    padding: 24px 10px 25px 0;
    box-sizing: border-box;
}
.nav-btn.a_down a::after {
    content: "";
    display: block;
    min-width: 8px;
    min-height: 8px;
    width: 8px;
    height: 8px;
    border-top: 3px solid #fff;
    border-right: 3px solid #fff;
    transform: rotate(135deg);
    position: absolute;
    right: 15px;
    top: 25px;
}
.nav-btn a:hover{
  text-decoration: none;
  background: #0d3d17;
}
.nav-btn-list.m_fixed {
    left: 0;
    position: fixed;
    top: 0;
    z-index: 10;
}
/*======================
.about-box
======================*/
.about-box {
    max-width: 1024px;
    box-sizing: border-box;
    width: 100%;
    margin: auto;
    padding-top: 50px;
    display: flex;
}
.about-txt-box {
    line-height: 1.8;
}
.sec-title01 {
    font-size: 29px;
    color: #2A880C;
    font-weight: bold;
    margin-bottom: 20px;
}
.about-txt-box {
    position: relative;
    min-width: 757px;
    width: 100%;
    padding: 25px 170px 40px 25px;
    background: #2A880C;
    z-index: 1;
    box-shadow: 0px 3px 6px #00000029;
    box-sizing: border-box;
}
.about-txt-box::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    right: 10px;
    bottom: 10px;
    background: #fff;
    z-index: -1;
    box-shadow: 0px 3px 6px #00000029;
}
img.about-img {
    transform: translate(-130px,40px);
    position: relative;
    z-index: 2;
}
/* ======================*/
.sec-ttl {
    display: flex;
    align-items: center;
    justify-content: center;
}
.sec-ttl h2{
    color: #2A880C;
    font-size: 29px;
    font-weight: bold;
    margin-left: 10px;
}
/*======================
news
======================*/
.news-ul {
  margin: 40px auto 0;
  height: 380px;
  overflow: auto;
  padding: 0 5%;
}
.news-tp {
  max-width: 1024px;
  margin: 130px auto 80px;
}
.news-li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  justify-content: flex-start;
  align-items: flex-start;
  padding: 15px 5%;
  border-top: solid 1px #2A880C;
}
.news-li:last-of-type {
  border-bottom: solid 1px #2A880C;
}
.news-date {
  width: 85px;
}
.news-ttl {
  flex: 1;
}
.news-ttl a:link{
  text-decoration:none;
}
.news-ttl a:link:hover{
  text-decoration:underline;
}
.news-box {
  display: flex;
  justify-content: flex-start;
  gap: 15px;
}
.news-cat {
  color: #fff;
  text-align: center;
  padding: 1px 3px;
  font-size: 14px;
  box-sizing: border-box;
	&.tanso {background: #9BB97C;}
	&.chiiki {background: #31705A;}
	&.resilient {background: #91B123;}
}
a.btn_pdf.news_btn {margin: 40px auto 0;}
/*======================
.greeting 
======================*/
.greeting {
  max-width: 1024px;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0px 3px 6px #00000029;
  padding: 30px 5% 35px;
  box-sizing: border-box;
}
.greeting_inner {
  display: flex;
  align-items: flex-start;
  margin-top: 25px;
  line-height: 1.7;
}
.greeting_txt {
  flex: 1;
  margin-right: 40px;
}
.greeting_name img {
    margin-bottom: 15px;
}
.greeting_name img:last-child {
    margin-top: 15px;
}
/*======================
.department 
======================*/
.department {
    margin: 80px auto;
}
.department-box {
    position: relative;
    max-width: 1024px;
    box-sizing: border-box;
    margin: 70px auto 100px;
    background: #fff;
    padding: 70px 5% 30px;
    box-shadow: 0px 3px 6px #00000029;
}
.dep-ttl {
    background: #81BF0C;
    max-width: 500px;
    border-radius: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    padding: 10px 0;
    margin: 0 auto;
    position: absolute;
    width: 100%;
    left: 0;
    right: 0;
    top: -27px;
}
.dep-ttl h3 {
    font-size: 18px;
    margin-left: 10px;
}
.dep-box_inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.dep-txt {
    margin-left: 40px;
    line-height: 1.7;
    flex: 1;
}
a.btn_more {
    position: relative;
    display: block;
    margin: 30px auto 0;
    text-align: center;
    max-width: 300px;
    width: 100%;
    border: solid 2px #126323;
    border-radius: 50px;
    color: #126323;
    padding: 10px 0;
}
.btn_more::after {
    content: "";
    min-width: 7px;
    min-height: 7px;
    width: 7px;
    height: 7px;
    border-top: 2px solid #0D543B;
    border-right: 2px solid #0D543B;
    transform: rotate(45deg);
    display: inline-block;
    position: absolute;
    top: 16px;
    bottom: 0;
    margin: 0 auto;
    right: 20px;
}
a.btn_more:hover{
  text-decoration: none;
    background: #c0df85;
}
.dep-box_inner.reverse {
    flex-direction: row-reverse;
}
.reverse  .dep-txt {
    margin-left: 0px;
    margin-right: 40px;
}
.dep-box_links {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
a.btn_pdf {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  background: #2a880c;
  color: #fff;
  max-width: 400px;
  box-sizing: border-box;
  gap: 15px;
  padding: 10px;
  margin-top: 20px;
}
a.btn_pdf:hover{
  text-decoration: none;
  opacity: .8;
}
a.btn_pdf::after{
  content: '';
  background: url(/iron_researchcenter/img/link-ttl.svg) no-repeat center;
  background-size: contain;
  min-width: 20px;
  min-height: 20px;
  display: inline-block;
  filter:grayscale(1) brightness(0) invert(1);
}
a.btn_pdf.un_blank::after{
  display: none;
}
.dep-box_links a.btn_pdf {
  max-width: 400px;
  width: 100%;
}
.dep-box_links a.btn_pdf--light {
  background: #81bf0c;
  text-align: center;
  height: 65px;
}
/*======================
link_box
======================*/
.link_box {
    padding: 80px 0 70px;
    background: #fff;
    border-bottom: solid 1px #0d3d17;
    position: relative;
}
.link_box a.btn_pdf {
  position: absolute;
  left: 0;
  right: 0;
  top: -25px;
  width: 90%;
  margin: 0 auto 0;
}
.link_ul {
    max-width: 1024px;
    box-sizing: border-box;
    width: 100%;
    margin: 50px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
}
.link_list p {
    text-indent: -1em;
}
.link_list p::first-letter{
  color: #0D543B;
}
.link_ul a{
  text-decoration: underline;
}
.link_list {
    margin-bottom: 2em;
}


/*タブ切り替え全体のスタイル*/
.tabs {
  background-color: #fff;
  width: 100%;
  margin: 40px auto 0;
}

/*タブのスタイル*/
.tab_news {
  width: calc(100%/4);
  height: 50px;
  margin-top: 20px;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  float: left;
  text-align: center;
  font-weight: bold;
  transition: all 0.2s ease;
  border: none;
  border-left: 1px solid #fff;
}
.tab_news:hover {
  opacity: 0.75;
  cursor: pointer;
}
.tabs li {
	&:nth-child(1) .tab_news {
		background: #009441;
	}
	&:nth-child(2) .tab_news {
		background: #9BB97C;
	}
	&:nth-child(3) .tab_news {
		background: #31705A;
	}
	&:nth-child(4) .tab_news {
		background: #91B123;
	}
}
/*タブ切り替えの中身のスタイル*/
.news_content {
  display: none;
  padding: 15px 30px 30px;
  clear: both;
  overflow: hidden;
  background: #fafafa;
  box-shadow: 0px 3px 6px #00000029;
}

/*選択されているタブのコンテンツのみを表示*/
.news_content.-active {
  display: block;
}

/*選択されているタブのスタイルを変える*/
.tabs li .tab_news.-active {
  background-color: #fafafa;
  margin-top: 0;
  height: 70px;
	color: #2A880C;
}


/*======================
footer
======================*/
.footer_n .fn_top {
  height: 415px;
  background: #fff;
  box-sizing: border-box;
  position: relative;
}

.footer_n .fn_data{
  position: absolute;
  max-width: 1024px;
  width: 90%;
  margin: auto;
  left: 0;
  right: 0;
  top: 40px;
}

.footer_n .fn_bold {
  font-weight: bold;
  font-size: 20px;
  margin-bottom: 10px;
}

.footer_n .fn_top .fn_logo {
  padding: 80px 0 60px;
}

.footer_n .fn_top ul.fn_link_list li, .footer_n .fn_top ul.fn_link_list li a {
  color: #0D3D17;
  font-size: 13px;
}

.footer_n .fn_top ul.fn_link_list li a:hover {
  text-decoration: underline #0D3D17;
}

@media screen and (max-width: 767px) {

  /*======================
  header
  ======================*/
  .header_logo_green {
    position: absolute;
    left: 3%;
    top: 3px;
  }
  .float_menu {
    position: absolute;
  }
  
  /*======================
  main
  ======================*/
 
  /* メインビジュアル */
  .hgroup {line-height: 1.5;}
  .hgroup_main {font-size: 16px;}
  .hgroup_sub {font-size: 24px; margin-bottom: 20px;}
  
  /*======================
  footer
  ======================*/
  .footer_n .fn_top {
    height: auto;
  }
}

@media screen and (orientation: portrait) and (min-width: 768px){
  .footer_n .fn_top ul.fn_link_list {
    width: 90%;
    margin: auto;
    flex-wrap: wrap;
  }
}
@media screen and (max-width: 767px) {
/*======================*/
.nav-btn-list {
    margin: 15px 0;
    padding: 0;
    justify-content: center;
    background: none;
}
.nav-btn-list.m_fixed {
    position: relative;
}
li.nav-btn a {
    padding: 10px 0;
}
li.nav-btn.a_down a {
    padding: 10px;
}
.nav-btn {
    width: 47%;
    max-width: 210px;
    text-align: center;
    margin: 5px 5px;
}
.nav-btn.a_down a::after {
    right: 12px;
    top: 12px;
}
.about {
    margin: 0 auto;
    width: 90%;
}
.about-box {
    display: block;
}
.about-txt-box {
    min-width: 100%;
    padding: 25px 8% 50px 4%;
    height: auto;
}
.news-date {
    margin-bottom: 10px;
}
img.about-img {
    transform: inherit;
    position: relative;
    display: block;
    margin-top: 20px;
}
li.news-li {
    display: block;
	padding: 15px 3%;
}
.news-tp {
    max-width: 90%;
    margin: 100px auto 80px;
}
.greeting {
    max-width: 93%;
}
.greeting_inner {
    display: block;
}
.greeting_txt {
    flex: 1;
    margin: 0 0 30px 0;
}
.greeting_name {
    width: auto;
    margin: 0 auto;
    text-align: center;
}
.department-box {
    max-width: 92%;
}
.dep-box_inner {
    display: block;
}
.dep-txt ,.reverse .dep-txt{
    margin: 30px 0 30px;
}
.dep-ttl {
    max-width: 85%;
}
.link_box {
    padding: 80px 5%;
    width: 90%;
}
.link_ul {
    max-width: 90%;
}
  
.dep-box_links {
  gap: 0;
}
	.news-box {gap: 10px;}
	.news-cat {
		display: flex;
    align-items: center;
    height: 24px;
		font-size: 12px;
	}
	.news-date {width: 75px;}
	.tab_news {
		font-size: 12px;
	}
	.news_content {
		padding: 15px 10px 30px;
	}
	.news-ul {
		margin-top: 20px;
		padding: 0 3%;
	}
	.footer_n .fn_top .fn_logo {
  padding: 80px 0 30px;
}
  .footer_n .fn_data {
  position: static;
  padding-bottom: 30px;
  max-width: 340px;
}
  .footer_n .fn_bold {
  font-size: 18px;
}
}