* {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px
}

body {
  margin: 0;
  color: #183447;
  font-family: "Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
  font-size: 16px;
  line-height: 1.9;
  background: #fff
}

a {
  color: inherit;
  text-decoration: none
}

a:hover {
  color: #147c87
}

button,input,textarea {
  font: inherit
}

button,a,input,textarea,summary {
  -webkit-tap-highlight-color: transparent
}

a:focus-visible,button:focus-visible,summary:focus-visible {
  outline: 3px solid #1e9198;
  outline-offset: 5px
}

img {
  max-width: 100%;
  height: auto
}

p {
  margin: 0 0 1.4em
}

h1,h2,h3 {
  line-height: 1.55;
  margin: 0 0 24px;
  font-weight: 600
}

h2 {
  font-size: 32px;
  letter-spacing: .04em
}

h3 {
  font-size: 22px
}

.wrap {
  max-width: 1180px;
  width: calc(100% - 96px);
  margin: auto
}

.section {
  padding: 88px 0
}

.eyebrow {
  font-size: 13px;
  letter-spacing: .18em;
  color: #247982;
  font-weight: 700;
  margin: 0 0 16px
}

.lead {
  font-size: 24px;
  font-weight: 500
}

.intro {
  margin-bottom: 48px
}

.tint {
  background: #f1f6f7
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 42px;
  justify-content: space-between;
  background: #173d52;
  color: white;
  padding: 16px 26px;
  border: 1px solid #173d52;
  font-size: 15px;
  cursor: pointer
}

.button:hover {
  background: #246174;
  color: #fff
}

.text-link {
  display: inline-flex;
  gap: 32px;
  border-bottom: 1px solid #7896a3;
  padding: 8px 0;
  font-size: 15px
}

.skip {
  position: absolute;
  top: -80px;
  left: 20px;
  background: white;
  z-index: 50
}

.skip:focus {
  top: 8px
}

header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid #e4ecef
}

.header-inner {
  min-height: 96px;
  max-width: 1440px;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: auto;
  gap: 32px
}

.logo {
  line-height: 0;
  flex-shrink: 0
}

.logo img {
  width: 250px;
  height: auto
}

nav {
  display: flex;
  gap: 26px;
  align-items: center;
  font-size: 14px;
  font-weight: 600
}

nav a {
  white-space: nowrap
}

nav [aria-current] {
  color: #167b85
}

nav [aria-current]:after {
  content: '';
  display: block;
  height: 2px;
  background: #167b85
}

nav .nav-contact {
  background: #173d52;
  color: white;
  padding: 12px 20px;
  display: flex;
  gap: 24px
}

.menu {
  display: none
}

.hero {
  position: relative;
  background: #eaf2f4;
  overflow: hidden;
  min-height: 620px
}

.hero-photo {
  position: absolute;
  inset: 0 0 0 34%
}

.hero-photo>img {
  width: 100%;
  height: 100%;
  object-fit: cover
}

.hero-photo:after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,#eaf2f4 0%,#eaf2f490 20%,transparent 65%)
}

.hero-content {
  position: relative;
  padding-top: 100px;
  padding-bottom: 110px
}

.hero h1 {
  font-family: "Yu Mincho","Hiragino Mincho ProN",serif;
  font-size: clamp(36px,4vw,58px);
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1.6;
  margin-bottom: 26px
}

.hero-description {
  font-size: 17px;
  line-height: 2.1
}

.hero-foot {
  position: relative;
  display: flex;
  justify-content: space-between;
  padding: 18px 48px;
  border-top: 1px solid #bed0d7;
  font-family: Georgia,serif;
  letter-spacing: .08em;
  font-size: 14px
}

.hero-foot span {
  font-family: inherit;
  font-size: 12px
}

.photo-caption {
  position: absolute;
  right: 20px;
  bottom: 75px;
  z-index: 1;
  font-size: 12px;
  background: #ffffffd9;
  padding: 2px 8px
}

.news-section {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 55px;
  padding-top: 48px;
  padding-bottom: 48px
}

.news-section h2 {
  font-size: 26px;
  margin-bottom: 10px
}

.news-row {
  display: grid;
  grid-template-columns: 94px 74px 1fr 15px;
  gap: 20px;
  border-bottom: 1px solid #dce6e9;
  padding: 20px 0;
  align-items: center;
  font-size: 14px
}

.news-row:first-child {
  padding-top: 0
}

.tag {
  font-size: 12px;
  color: #35606c;
  background: #edf3f4;
  padding: 2px 8px;
  display: inline-block;
  text-align: center
}

.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 90px
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 30px
}

.section-heading h2 {
  margin: 0
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 34px;
  margin-top: 48px
}

.business-grid article {
  border-top: 1px solid #a8bdc7;
  padding-top: 24px
}

.number {
  font: italic 32px Georgia,serif;
  color: #44858e;
  display: block;
  margin-bottom: 24px
}

.business-grid p {
  color: #506573
}

.cards {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px
}

.product-card {
  display: block;
  background: white;
  border: 1px solid #d5e1e5;
  padding: 28px;
  transition: transform .2s
}

.product-card:hover {
  transform: translateY(-4px)
}

.product-number {
  display: flex;
  justify-content: space-between;
  color: #56808d;
  font-size: 13px
}

.product-card h3 {
  font: 48px Georgia,serif;
  padding: 30px 0 15px;
  margin: 0
}

.product-card p {
  color: #506573;
  font-size: 15px;
  min-height: 85px
}

.card-bottom {
  border-top: 1px solid #dce5e9;
  padding-top: 18px;
  font-size: 14px;
  display: flex;
  justify-content: space-between
}

.contact-band {
  background: #143c50;
  color: white;
  padding: 52px 0
}

.contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px
}

.contact-band .eyebrow {
  color: #a1d7dc
}

.contact-band h2 {
  font-size: 27px;
  margin-bottom: 8px
}

.contact-band p {
  margin-bottom: 0
}

.contact-band .eyebrow {
  margin-bottom: 10px
}

.contact-band .button {
  background: white;
  color: #143c50;
  flex-shrink: 0
}

footer {
  padding: 50px 0 20px;
  background: #f7f9fa;
  font-size: 14px
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px
}

.footer-top strong {
  font-size: 22px
}

.footer-top p {
  margin-top: 20px;
  color: #526570
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 18px 48px;
  align-content: start
}

.copyright {
  border-top: 1px solid #dae3e7;
  margin-top: 36px;
  padding-top: 20px;
  color: #687c87;
  font-size: 12px
}

.page-head {
  background: #edf4f6;
  padding: 22px 0 52px
}

.crumb {
  font-size: 13px;
  color: #677e8b;
  margin-bottom: 42px
}

.page-head h1 {
  font-size: 42px;
  margin: 0
}

.data-list {
  margin-top: 40px
}

.data-list>div {
  display: grid;
  grid-template-columns: 220px 1fr;
  border-bottom: 1px solid #ccdce2;
  padding: 22px 8px;
  gap: 25px
}

.data-list dt {
  font-weight: 600
}

.data-list dd {
  margin: 0
}

.signature {
  padding-top: 20px
}

.signature strong {
  display: block;
  font-size: 25px
}

.brand-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #f0f4f4;
  padding: 55px
}

.brand-panel img {
  max-width: 145px
}

.brand-panel p {
  font: 24px/1.6 Georgia,serif;
  text-align: center;
  margin: 30px 0 0
}

.business-detail {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 30px;
  border-top: 1px solid #ccdade;
  padding: 40px 0
}

.business-detail h2 {
  font-size: 27px
}

.business-detail p {
  max-width: 850px
}

.product-display {
  background: #edf3f5;
  padding: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 320px
}

.product-display>div {
  font: 80px Georgia,serif;
  margin: 30px 0
}

.product-display p {
  font-size: 13px;
  letter-spacing: .15em
}

.notice {
  border-left: 3px solid #866b30;
  padding: 16px 20px;
  background: #f7f4ea
}

.note {
  font-size: 14px;
  color: #596d78;
  margin-top: 24px
}

.narrow {
  max-width: 860px
}

.news-article {
  padding: 0 0 45px;
  margin-bottom: 45px;
  border-bottom: 1px solid #d5e1e5;
  scroll-margin-top: 120px
}

.meta {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
  font-size: 14px
}

.news-article h2 {
  font-size: 25px
}

.email-box {
  background: #edf4f6;
  padding: 28px 32px;
  margin: 30px 0 55px
}

.email-box span {
  display: block;
  font-size: 14px
}

.email-box a {
  font-size: 28px;
  color: #146878;
  overflow-wrap: anywhere
}

form label {
  display: block;
  margin: 25px 0;
  font-weight: 600
}

.required {
  font-size: 12px;
  color: #176574;
  margin-left: 12px
}

input,textarea {
  display: block;
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  border: 1px solid #9eb6c1;
  border-radius: 0;
  color: #183447;
  background: #fff
}

input:focus,textarea:focus {
  outline: 2px solid #227e89;
  outline-offset: 2px
}

summary {
  padding: 20px;
  background: #eef4f5;
  cursor: pointer
}

.document-section {
  padding-top: 0
}

.document-image {
  display: block;
  width: 100%;
  margin-top: 20px
}

#form-status {
  padding-top: 20px
}

details {
  margin: 25px 0
}

@media(max-width:1100px) {
  nav {
    gap: 16px;
    font-size: 13px
  }

  .header-inner {
    padding: 18px 24px;
    gap: 20px
  }

  .logo img {
    width: 250px
  }

  .wrap {
    width: calc(100% - 64px)
  }

  .split {
    gap: 45px
  }

}

@media(max-width:900px) {
  .header-inner {
    min-height: 78px
  }

  .menu {
    display: flex;
    gap: 12px;
    align-items: center;
    background: white;
    border: 1px solid #d5e1e5;
    padding: 8px 12px;
    color: #173d52;
    font-size: 14px
  }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 20px 24px;
    border-bottom: 1px solid #d5e1e5;
    max-height: 80vh;
    overflow: auto
  }

  nav.open {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px
  }

  nav a {
    padding: 6px
  }

  .news-section {
    grid-template-columns: 1fr;
    gap: 26px
  }

  .cards {
    gap: 15px
  }

  .product-card {
    padding: 20px
  }

  .business-grid {
    gap: 20px
  }

  .contact-inner {
    align-items: flex-start;
    flex-direction: column
  }

}

@media(max-width:600px) {
  .wrap {
    width: calc(100% - 40px)
  }

  .section {
    padding: 54px 0
  }

  .hero {
    min-height: 0
  }

  .hero-photo {
    inset: 0;
    opacity: .3
  }

  .hero-photo:after {
    background: linear-gradient(90deg,#eaf2f4 0%,transparent 100%)
  }

  .hero-content {
    padding-top: 62px;
    padding-bottom: 80px
  }

  .hero h1 {
    font-size: 34px;
    letter-spacing: .02em
  }

  .hero-description {
    font-size: 15px
  }

  .hero-foot {
    padding: 16px 20px;
    font-size: 12px;
    display: block
  }

  .hero-foot span {
    display: none
  }

  .photo-caption {
    bottom: 65px;
    font-size: 12px
  }

  .hero-photo {
    opacity: .65
  }

  .hero-photo:after {
    background: linear-gradient(90deg,#eaf2f4 5%,#eaf2f4d9 50%,#eaf2f488)
  }

  h2 {
    font-size: 26px
  }

  .lead {
    font-size: 21px
  }

  .news-row {
    grid-template-columns: 90px 75px 1fr;
    gap: 8px 12px;
    padding: 18px 0
  }

  .news-row>span:nth-child(3) {
    grid-row: 2;
    grid-column: 1/3
  }

  .news-row>span:last-child {
    grid-row: 2;
    grid-column: 3;
    justify-self: end
  }

  .split,.cards,.business-grid {
    grid-template-columns: 1fr;
    gap: 30px
  }

  .section-heading {
    display: block
  }

  .section-heading .text-link {
    margin-top: 18px
  }

  .business-grid {
    margin-top: 32px
  }

  .product-card p {
    min-height: 0
  }

  .product-card h3 {
    padding: 20px 0
  }

  .contact-band h2 {
    font-size: 24px
  }

  .footer-top {
    flex-direction: column
  }

  .footer-links {
    gap: 14px
  }

  .page-head h1 {
    font-size: 32px
  }

  .page-head {
    padding-bottom: 36px
  }

  .crumb {
    margin-bottom: 26px
  }

  .data-list>div {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 18px 0
  }

  .business-detail {
    grid-template-columns: 1fr;
    gap: 0
  }

  .business-detail .number {
    margin-bottom: 10px
  }

  .business-detail h2 {
    font-size: 24px
  }

  .product-display {
    min-height: 250px;
    padding: 30px
  }

  .document-section {
    padding-top: 0
  }

  .email-box {
    padding: 24px
  }

  .email-box a {
    font-size: 24px
  }

  .button {
    gap: 24px
  }

  .brand-panel {
    padding: 35px
  }

  .news-article h2 {
    font-size: 22px
  }

}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto
  }

  * {
    transition: none!important
  }

}

.company-heritage {
  margin: 34px 0 0;
  max-width: 471px
}

.company-heritage img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #d8dedb
}

.advisors p {
  margin: 0 0 20px
}

.advisors p:last-child {
  margin: 0
}

.advisors span {
  display: block;
  color: #526570;
  font-size: 14px;
  margin-top: 5px
}

.history-layout {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 64px;
  align-items: center
}

.history-layout .data-list>div {
  grid-template-columns: 125px 1fr;
  gap: 20px
}

.history-photo {
  margin: 0;
  background: #edf3f5;
  padding: 24px
}

.history-photo img {
  display: block;
  width: 100%;
  height: auto
}

@media(max-width:900px) {
  .history-layout {
    grid-template-columns: 1fr;
    gap: 32px
  }

  .history-photo {
    max-width: 520px
  }

}

@media(max-width:600px) {
  .company-heritage {
    margin-top: 28px
  }

  .history-layout .data-list>div {
    grid-template-columns: 1fr;
    gap: 8px
  }

  .history-photo {
    padding: 16px
  }

}

/* ニュース写真：クリックすると元画像を別タブで表示 */
.news-gallery {
  margin: 28px 0 0;
  display: grid;
  gap: 20px;
}

.news-gallery figure {
  margin: 0;
}

.news-gallery a {
  display: block;
}

.news-gallery img {
  display: block;
  width: 100%;
  height: auto;
}

.news-gallery-multiple {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.news-gallery-multiple figure:first-child:nth-last-child(3) {
  grid-column: 1 / -1;
}

.news-gallery-multiple img {
  max-height: 440px;
  object-fit: contain;
  background: #f1f6f7;
}

/* 商品ごとの仮画像。共通の寸法で、画像ファイルだけを差し替えできます。 */
.product-placeholder {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: contain;
  background: #edf3f5;
}

.product-card .product-placeholder {
  margin: 24px 0 0;
}

.product-card h3 {
  padding-top: 20px;
}

.product-display .product-placeholder {
  margin: 24px 0 12px;
}

.product-display .placeholder-caption {
  margin: 0 0 20px;
  letter-spacing: 0;
  font-size: 12px;
  color: #596d78;
}

.s20-documents {
  margin-top: 28px;
}

.s20-documents .document-image {
  margin: 0;
  width: 100%;
  height: auto;
}

/* 250pxロゴを保ち、中間幅ではメニューを折りたたみ表示 */
@media (min-width: 901px) and (max-width: 1200px) {
  .menu {
    display: flex;
    gap: 12px;
    align-items: center;
    background: white;
    border: 1px solid #d5e1e5;
    padding: 8px 12px;
    color: #173d52;
    font-size: 14px;
  }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 20px 24px;
    border-bottom: 1px solid #d5e1e5;
  }

  nav.open {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

}

@media (max-width: 600px) {
  .header-inner {
    padding: 14px 20px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .header-inner .menu {
    margin-left: auto;
  }

  .news-gallery-multiple {
    grid-template-columns: 1fr;
  }

  .news-gallery-multiple figure:first-child:nth-last-child(3) {
    grid-column: auto;
  }

}

/* スマートフォンではメニューをアイコン表示にしてロゴの横に配置 */
@media (max-width: 600px) {
  .header-inner .menu {
    font-size: 0;
    gap: 0;
    padding: 8px 12px;
  }

  .header-inner .menu span {
    font-size: 20px;
  }

}