@charset "utf-8";

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  color: #2b2e34;
  font-size: 16px;
  line-height: 1.8;
  background: #fff;
  position: relative;
}

sup{ font-size: .5em; }
ul { margin-left: 1.5em; }

/* ===== HEADER ===== */
header#site-header { height: 600px; }
.header-top {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 40px;
  height: 96px;
}
.header-logos {
  display: flex;
  align-items: center;
  width: 100%;
  justify-content: space-between;
  max-width: 1000px;
  margin: 0 auto;
}


.logo-otsuka img { height: 40px; display: block;  width: auto; }
.logo-sep { display:flex;align-items:center;gap:16px; width: 1px; height: 32px; background: #c8c8c8; }
.logo-toyobo img { height: 40px; display: block; margin-right: auto; width: auto;}

.header-contact {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  background: #426bba;
  color: #fff;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.5;
  text-align: center;
  min-width: 76px;
  gap: 3px;
}
.header-contact:hover { background: #3c61ac; }

/* グローバルナビ下段 */
.header-nav { background: #f6f6f6; position: sticky; top: 90px; z-index: 10; }
.header-nav-inner {
  display: flex;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0;
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  list-style: none;
}
.header-nav-inner li { padding: 20px 10px; line-height: 1.2; position: relative;}
.header-nav-inner li + li::before { content: ""; height: 54px; width: 1px; background: #426BBA; position: absolute; left: 0; top: 50%; transform: translateY(-50%);  }
.nav-item::before { width: .8em; height: 1em; content: ""; display: inline-block; mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 31.02 18.09'%3E%3Cpath d='M31.02 2.58c0 .27-.1.51-.31.71L16.23 17.78c-.21.21-.45.31-.71.31s-.51-.1-.71-.31L.31 3.29c-.21-.21-.31-.45-.31-.71s.1-.51.31-.71L1.86.31c.21-.21.45-.31.72-.31s.51.1.71.31l12.22 12.22L27.73.31c.21-.21.45-.31.71-.31s.51.1.71.31l1.55 1.55c.21.21.31.45.31.71Z'/%3E%3C/svg%3E"); background-color: #426BBA; margin-right: .5em; position: absolute; left: 0; top: 0; mask-size: contain; mask-repeat: no-repeat; mask-position: center;}
.nav-item {
  display: block;
  align-items: center;
  gap: 6px;
  padding: 0 0 0 20px;
  text-decoration: none;
  color: #707070;
  font-size: 18px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
  position: relative;
}
.nav-item.noarrow{ display: inline; }
.nav-item.noarrow::before{ content: none;  }

.nav-item:hover { color: #426bba; background: #eff3f8; }

/* ハンバーガー */
.hmmenu {display: none;}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  background: #fff;
  border-top: 1px solid #e0e0e0;
  z-index: 999;
  flex-direction: column;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 14px 24px; color: #2b2e34; text-decoration: none; font-size: 14px; border-bottom: 1px solid #f0f0f0; }

/* ページトップ */
.page-top {
  position: fixed;
  bottom: 0; right: 0;
  width: 48px; height: 48px;
  background: #426bba;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  font-size: 18px;
  z-index: 500;
  opacity: 0;
  transition: opacity 0.3s, bottom 0.1s;
}
.page-top.visible { opacity: 1; }
.page-top.stop {
  position: absolute;
}
.page-top:hover { background: #3c61ac; }
.page-top svg .st0 { fill: #fff; }
#arrow { width: 18px; }

/* ===== MAIN ===== */
main { margin-top: 0 }
html { scroll-padding-top: 200px; }
section { scroll-margin-top: 200px; }

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: #0d2a3e;
}
.hero-bg {
  width: 100%;
  height: 600px;
  object-fit: cover;
  object-position: center top;
  display: block;
  opacity: 0.7;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,42,62,0.5) 0%, rgba(13,42,62,0.15) 100%);
}

.hero-content {
  position: absolute;
  bottom:50px;
  right: calc(50% - 500px); 
  color: #fff;
  max-width: 640px;
}
.hero-sub {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 6px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}
.hero-title {
  font-size: 140px;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  margin-bottom: 14px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero-title span.sup { font-size: 70px; vertical-align: super; }
.hero-title span.red { color: #b30029; }
.hero-desc {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.75;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
  margin-top: 25px;
}

/* ===== お問い合わせ帯 ===== */
.cta-band {
  background: #3c61ac;
  padding: 30px 40px;
  text-align: center;
  color: #fff;
}
.cta-band h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.cta-btn {
  display: inline-block;
  background: #fff;
  color: #3c61ac;
  font-size: 26px;
  font-weight: 400;
  padding: 13px 84px 13px 44px;
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: background 0.2s;
  position: relative;
}
.cta-btn:hover { opacity:.7; }
.cta-btn svg.icon_blank {
  color: #3c61ac;
  position: absolute;
  right: .5em;
  top: 1em;
} 

/* ===== セクション見出し帯 ===== */
.section-heading { background: #426bba; padding: 0 40px; }
.section-heading-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-num {
  width: 30px; height: 30px;
  background: #fff;
  color: #426bba;
  font-size: 14px;
  font-weight: 700;
  font-style: italic;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.section-heading h2 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}

/* ===== 共通コンテナ ===== */
.content-wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== セクション1：概要 ===== */
#overview { padding: 56px 40px 72px; background: #fff; }
.overview-inner { max-width: 1000px; margin: 0 auto; }
.overview-inner h3 { font-size: 30px; font-weight: 700; margin-bottom: 14px; }
.overview-inner .wrap { position: relative; }
.overview-inner .wrap p { position: absolute; left: 0; top:0; width: 100%; max-width: 700px; }
.overimg img { width: 100%; height: auto; }
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 30px;
}
.overview-grid > div {
  
}

.overview-grid > div img {
  width: 100%;
  height: auto;
}

.overview-img { width: 100%; height: auto; display: block; }
.toyo-section h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.toyo-section p { font-size: 14px; line-height: 1.95; color: #2b2e34; }
.membrane-photos {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-top: 16px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.membrane-photo {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11.5px;
  color: #707070;
}
.membrane-photo h4 { color: #2B2E34; font-weight: bold; font-size: 17px;}
.membrane-photo.w6 { width: 50%; }
.membrane-photo.w4 { width: 45%; }
img { width: 100%; height: auto; display: block; }
.cross-label {
  font-size: 11px;
  color: #707070;
  text-align: left;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* ===== セクション2：荷電精製膜 ===== */
#charged { padding: 56px 40px 72px; background: #fff; }
.charged-inner { max-width: 1000px; margin: 0 auto; }

h2.sub-label { font-size: 30px; font-weight: bold; color: #333; margin-bottom: 8px; background: #EFF3F8; position: relative; padding: 10px 25px; padding-left: 35px; margin-bottom: 30px; }
h2.sub-label::before { content: ""; position: absolute; background: #426BBA; width: 5px; height: 30px; left: 0; top: 50%; transform: translateY(-50%); }
.section-text { font-size: 16px; line-height: 1.95; margin-bottom: 32px;}
h4 { color: #2B2E34; font-size: 17px; }
h3.sub-label,
h4.sub-label { font-size: 20px; color: #426BBA; font-weight: bold;}

.comparison-table table{ padding: 5px; width: 100%; border-spacing: 10px 5px; margin-top: 30px; }
.comparison-table table td:nth-of-type(1) { background: #ddd; text-align: center; width: 30% }
.comparison-table table td:nth-of-type(2) { background: #426BBA; text-align: center; color: #fff; width: 30%; }
.comparison-table table th { background: #B7CEED; font-weight: normal; }
.comparison-table .nobg{ background: #fff; }

/* プロセス比較 */
.compare-title { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.compare-lead { font-size: 15px; line-height: 1.95; margin-bottom: 20px; }
.process-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid #c8c8c8;
  margin-bottom: 12px;
}
.process-col-head {
  font-size: 14px;
  font-weight: 700;
  padding: 9px 18px;
  text-align: center;
  border-bottom: 1px solid #c8c8c8;
}
.process-col-head.old { background: #e0e0e0; color: #2b2e34; }
.process-col-head.new { background: #426bba; color: #fff; }
.process-img { width: 100%; height: auto; display: block; }
.process-left { border-right: 1px solid #c8c8c8; }
.compare-note { font-size: 12.5px; color: #707070; margin-bottom: 40px; }

/* 比較テーブル */
.comp-table-wrap { margin-bottom: 40px; margin-top: 50px; }
.comp-table-wrap h4 { font-size: 17px; font-weight: 700; margin-bottom: 14px; }
.comp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.comp-table th {
  background: #426bba;
  color: #fff;
  padding: 10px 18px;
  text-align: center;
  font-weight: 700;
  border: 1px solid #c8c8c8;
}
.comp-table .terp {
  font-style: italic;
}
.comp-table td {
  padding: 5px 18px;
  border: 1px solid #c8c8c8;
  text-align: center;
  background: #fff;
  font-size: 20px;
  color: #426BBA;
  font-weight: 900;
}
.comp-table td:first-child { text-align: left; font-size: 13px; border-left: none;}
.comp-table td:last-child,
.comp-table th:nth-of-type(4) {background: #FFF6F5; color: #FB0E0E; border-left: 3px solid #FB0E0E; border-right: 3px solid #FB0E0E;}
.comp-table th:nth-of-type(4) {border-top: 3px solid #FB0E0E; border-bottom: 1px solid #c8c8c8; }
.comp-table tr:last-child td:last-child { border-bottom: 3px solid #FB0E0E; }

/* ラインナップ帯 */
.lineup-band {
  background: #426bba;
  margin-bottom: 20px;
}
.lineup-band h3 { font-size: 18px; font-weight: 700; color: #fff; padding: 3px 5px; }

/* 製品ブロック */
.product-block { margin-bottom: 56px; }
.mt30 { margin-top: 30px; }
.mt50 { margin-top: 50px; }
.m1ti1 { margin-left: 1em; text-indent: -1em; }
.center { text-align: center; }

.product-data {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
h5 { font-size: 17px; font-weight: bold; }
h5 span { font-size: 16px; }
.data-col img { width: 100%; height: auto; display: block; margin-bottom: 10px; }
.data-col p { font-size: 16px; line-height: 1.8; color: #2b2e34; }

/* spec table */
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 10px; }
.spec-table thead tr { background: #426bba; }
.spec-table th { color: #fff; padding: 8px 12px; text-align: center; font-size: 17px; font-weight: normal; }
.spec-table td { padding: 8px 12px; border-bottom: 1px solid #c8c8c8;; }
.spec-table td + td,
.spec-table th + th{ border-left: 1px solid #c8c8c8; text-align: center; }
.spec-table.quality td,
.spec-table.quality td + td { text-align: left; border-left: 1px solid #c8c8c8;}
.spec-table.quality td.center { text-align: center; }
.spec-table.quality td.nobdr {border-left: none;}

.spec-val { text-align: right; font-weight: 700; }
.conditions { font-size: 14px; }
.conditions ul { list-style: none; margin-left: 0; }
hr{background-color: #C8C8C8; border: none; height: 1px; margin-bottom: 50px;}
.relative {position: relative;}
img + img.enlarge{position: absolute; right: 5px; bottom: 5px; width: 40px; height: 40px;}

/* ===== セクション3：ウイルス除去膜 ===== */
#virus { padding: 56px 40px 72px; background: #fff; }
.virus-inner { max-width: 1000px; margin: 0 auto; }

.data-title { font-size: 17px; font-weight: 700; margin-bottom: 14px; }
.data-sub   { font-size: 14px; font-weight: 700; margin-bottom: 10px; }

.data-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 24px;
}

.data-grid-2 p{ font-size: 16px; }

.data-grid-3 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 24px;
}
.blue { color: #3E6FB4; }
.green { color: #4B9C4D; }
.w50p { width: 50% !important; }
.w70x { width: 100% !important; max-width: 700px; }
.w90p { width: 90% !important; }
.data-grid-3 img, .data-grid-2 img { width: 100%; height: auto; display: block; }
.data-grid-3 p, .data-grid-2 .note { font-size: 12px; color: #707070; line-height: 1.75; margin-top: 8px; }

.achievement {
  font-size: 20px;
  font-weight: 600;
  color: #2b2e34;
  margin-bottom: 32px;
  padding: 10px 15px;
  border: 3px solid #426BBA;
  display: inline-block;
}

/* ウイルス設計品質テーブル */
.virus-spec-wrap {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 24px;
  margin-bottom: 40px;
  align-items: start;
}
.virus-spec-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.virus-spec-table th { background: #426bba; color: #fff; padding: 8px 12px; text-align: left; font-weight: 700; border: 1px solid #5a80c8; }
.virus-spec-table td { padding: 7px 12px; border: 1px solid #c8c8c8; background: #fff; font-size: 12.5px; }
.virus-spec-table .val { text-align: right; font-weight: 700; color: #2b2e34; }
.enlarge_img { width: 90% !important; }

/* モジュール */
.module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.module-img-box {
  background: #939c9b;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.module-img-box img { max-height: 110px; max-width: 90%; object-fit: contain; }
.module-label { padding: 5px 0; font-size: 16px; font-weight: 600; text-align: left; }

/* 動画ボタン */
.movielink {
  display: block;
  text-align: center;
  margin-bottom: 100px;
}

.movielink a {
  display: inline-block;
  gap: 8px;
  background: #3c61ac;
  color: #fff;
  padding: 25px 115px;
  line-height: 1;
  text-decoration: none;
  font-size: 22px;
  font-weight: 600;
  margin: 16px auto 0;
  border-radius: 50px;
  transition: background 0.2s;
}
.movielink a:hover { background: #2e4e99; }
.movielink svg { width: 16px; fill: #fff;}

/* 主な仕様帯 */
.spec-section { margin-bottom: 8px; }
.spec-section > h4 { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
.spec {max-width: 600px; margin: 0 0 30px;}

/* ===== フッター ===== */
footer { background: #fff; padding: 28px 0; max-width: 1000px; margin: 0 auto;}
.footer-inner {
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;

}
.footer-logos { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 30px; }
.footer-logos div > img { max-height: 60px; width: auto; }
.footer-logos img { height: 42px; width: auto; }
.footer-company { font-size: 12px; color: rgba(255,255,255,0.55); }
.footer-copy { font-size: 12px; color: #BCBBBB; text-align: center; }
.ly_footer_navList {
    display: flex;
    justify-content: center;
	gap: 10px;
	margin: 0;
    padding: 0;
    list-style: none;
}
.ly_footer_navItem a {
	color: #333;
	letter-spacing: .05em;
    text-decoration: underline;
    text-decoration-color: rgba(0, 0, 0, 0);
    transition-property: color, text-decoration-color;
    transition-duration: .3s;
    transition-timing-function: ease-in-out;
}
.ly_footer_navItem::after {
    content: "";
    width: 1px;
    height: calc(100% - 10px);
    background-color: #b2b2b2;
	display: inline-block;
	vertical-align: middle;
	margin-left: 10px;
}

.ly_footer_navItem:last-child::after {
  content: unset;
}

.ly_footer_navItem a {
  font-size: clamp(9.57px, 1.0109519798vw, 13px);
}

.ly_footer_youtube {
    position: relative;
    display: flex;
    align-items: center;
    padding-left: 37px;
    letter-spacing: .05em;
    transition-property: color;
    transition-duration: .3s;
    transition-timing-function: ease-in-out;
	background-color: rgba(0, 0, 0, 0);
    text-decoration: none;
    color: inherit;
}
.ly_footer_youtube:before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 28px;
    height: auto;
    aspect-ratio: 28 / 20;
    background-repeat: no-repeat;
    background-size: cover;
    background-image: url(../img/icon_youtube.webp);
}
.ly_fixedBanner {
    position: fixed;
    z-index: 100;
	right: 0;
    top: 400px;
}
.ly_fixedBanner_banner {
    box-shadow: 0 2px 5px rgba(61, 86, 154, .2);
	width: 80px; height: 80px;
}
.ly_fixedBanner_banner a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 100%;
    height: 100%;
    text-align: center;
    line-height: 1.25454545;
    letter-spacing: .05em;
    font-weight: 700;
    transition-property: border-color, background-color, color;
    transition-duration: .3s;
    transition-timing-function: ease-in-out;
	flex-direction: column;
	border-radius: 5px 0 0 5px;
	border-top: 1px solid #fff;
	border-bottom: 1px solid #fff;
	border-left: 1px solid #fff;
	margin-top: 10px;
}
.ly_fixedBanner_catalog a {
    background-color: #eff3f8;
    color: #426bba;
	text-decoration: none;
	border: 1px solid #426bba;
	border-right: none;
	transition: .5s;
}
.ly_fixedBanner_catalog p {
	font-size: 11px;
}
.ly_fixedBanner_catalog a:hover {
  background-color: #426bba;
  color: #fff;
  border: 1px solid #fff;
  border-right: none;
}
.ly_fixedBanner_catalog a svg .fill {
  transition: .5s;
}
.ly_fixedBanner_catalog a:hover svg .fill {
  fill: #fff;
}
.ly_fixedBanner_contact a,
.ly_fixedBanner_contact a svg .fill {
    background-color: #426bba;
    color: #fff;
	text-decoration: none;
	font-size: 11px;
	transition: .5s;
}
.ly_fixedBanner_contact a:hover svg .fill {
  fill: #426bba;
}
.ly_fixedBanner_contact a:hover {
    background-color: #fff;
    color: #426bba;
	border: 1px solid #426bba;
	border-right: none;
}

.sp {display: none;}
.pc {display: inline;}
/* ===== レスポンシブ ===== */
@media (max-width: 1020px) {
  .hero-content {
    right: calc(50% - 400px); 
  }
  .hero-sub {
    font-size: 22px;
  }
  .hero-title {
    font-size: 100px;
  }
  footer {
    padding: 28px .5em;
  }
}

@media (max-width: 1000px) {
  main { margin-top: 0; }
  section { scroll-margin-top: 90px; }
  .hmmenu {display: block;}
  .header-top { height: 60px; }
  .header-nav { display: none; }
  .hero-sub {font-size: 18px;}
  .hero-title {font-size: 80px;}
  .hero-desc {font-size: 14px;}
  .logo-otsuka img { margin-left: 20px; }
  .toyobo {margin-right: auto; margin-left: 20px;}
  .hero { margin-top: 60px; }
  header#site-header {
    height: unset;
  }
  h2.sub-label { font-size: 22px; padding: 10px 15px;
    padding-left: 15px;}
  .overview-inner h3 {font-size: 20px;}
  .cta-band h2 { font-size: 22px; }
  .cta-btn { font-size: 22px; letter-spacing: unset; padding: 13px 44px 13px 24px; }
  .overview-inner .wrap { position: relative; width: 100%; max-width: 100%; }
  .overview-inner .wrap p { width: 100%; position: static; }
  .overview-inner .nobr {display: none;}
  .header-top { padding: 0; }
  .hmmenu { background: #426BBA; width: 60px; height: 60px; position: relative; }
  .hmmenu:has(.hamburger.open) {background-color: #5b6265; }
  .hamburger { display: flex; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);}
  .hero-bg { height: 380px; }
  .hero-title { font-size: 60px; }
  .hero-title span.sup { font-size: 30px; }
  .hero-content { left: 50%; top: 45%; transform: translateX(-50%) translateY(-50%); text-align: center; width: 88%; }
  #overview, #charged, #virus { padding: 1em; }
  .section-heading { padding: 0 20px; }
  .lineup-band { padding: 11px 20px; }
  img + img.enlarge { bottom: 35px; }
  .achievement { font-size: 18px; }
  .movielink a { font-size: 18px; padding: 15px 30px; }
  .cta-band { padding: 40px 20px; }
  .data-grid-3 img, .data-grid-2 img { width: 90%; }
  .overview-grid, .product-data, .data-grid-2, .virus-spec-wrap, .process-compare { grid-template-columns: 1fr; }
  .data-grid-3 { grid-template-columns: 1fr; }
  .module-grid { grid-template-columns: 1fr; }
  .ly_fixedBanner { top: 168px; right: 0; }
  .ly_fixedBanner_banner { width: 80px; height: 80px; }
  .ly_fixedBanner_banner a {
	flex-direction: column;
	border-radius: 5px 0 0 5px;
  }
  .ly_fixedBanner_contact a {
    border-top: 1px solid #fff;
	border-bottom: 1px solid #fff;
	border-left: 1px solid #fff;
	margin-top: 10px;
  }
  footer { padding: 24px 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-logos { flex-flow: column; }
  .footer-logos img { margin: 0 auto 15px; }
  .footer-logos > div { text-align: center; width: 100%; margin-bottom: 30px;}
  .footer-logos > ul ,
  .footer-logos > a { margin: 0 auto 15px; }
    .footer-logos > ul { flex-wrap: wrap; }
  .sp {display: inline;}
  .pc {display: none;}
  .w50p { width: 100% !important; }
  .w90p { width: 100% !important; }
}


@media (max-width: 750px) {
    .logo-otsuka img, .logo-toyobo img {
	  height: 25px;
	}
    .ly_fixedBanner {
        top: unset;
		right: unset;
		bottom: 0;
        left: 0;
        display: flex;
        width: 100%;
    }
	.ly_fixedBanner_banner {
        width: 50%;
        height: 45px;
    }
	.ly_fixedBanner_banner a {
        border: none;
		border-top: 1px solid #426bba;
		border-radius: unset;
		display: flex;
		flex-direction: initial;
    }
	.ly_fixedBanner_banner {
        width: 50%;
        height: 45px;
    }
	.ly_fixedBanner_contact a .icon {
        width: 20px;
    }
	.ly_fixedBanner_banner a {
	  margin-top: 0;
	}
	.membrane-photos.stagger{
	  flex-direction: column;
	}
	.membrane-photo.w6,
    .membrane-photo.w4 {
	  width: 100%;
	}
}

/* ========== SCROLL ANIMATIONS ========== */
/*
  .fade-up   : 下から上にフェードイン
  .fade-in   : フェードインのみ
  クラスはJSでIntersectionObserverにより付与
*/
.fade-up,
.fade-in {
  opacity: 0;
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up  { transform: translateY(28px); }
.fade-in  { transform: none; }

.fade-up.visible,
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 子要素を順番に遅延させるクラス */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.stagger > *.visible { opacity: 1; transform: translateY(0); }
.stagger > *:nth-child(1) { transition-delay: 0s; }
.stagger > *:nth-child(2) { transition-delay: 0.12s; }
.stagger > *:nth-child(3) { transition-delay: 0.24s; }
.stagger > *:nth-child(4) { transition-delay: 0.36s; }

/* prefers-reduced-motion 対応（アクセシビリティ） */
@media (prefers-reduced-motion: reduce) {
  .fade-up, .fade-in, .stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* Lightbox */
#lb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
#lb-overlay.open {
  display: flex;
}
#lb-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
#lb-img {
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  display: block;
  box-shadow: 0 8px 48px rgba(0,0,0,0.6);
}
#lb-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
}
#lb-close:hover { color: #ccc; }

/* ========== Video Modal ========== */
#video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  z-index: 10000;
  align-items: center;
  justify-content: center;
}
#video-modal.open {
  display: flex;
}
#video-modal-inner {
  position: relative;
  width: min(640px, 90vw);
}
#video-modal-inner iframe,
#shanon-video-player-xEvHc8pCFeoFYbsQEWdp0lzdob6cySaV {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  border: none;
}
#video-modal-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  transition: opacity 0.2s;
}
#video-modal-close:hover { opacity: 0.7; }

.notice { text-indent: -1.3em; margin-left: 1em; line-height: 1.38;}