:root {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text: #17130f;
  --color-muted: #6f665a;
  --color-border: #ded7cb;
  --color-accent: #8a6f3d;
  --color-black: #000000;
  --font-heading: Georgia, "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-display: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", "Noto Sans JP", serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", sans-serif;
  --header-height: var(--header-height-desktop, 136px);
  --shell-width: 90%;
  --shell-max: 1200px;
  --section-space: 100px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  isolation: isolate;
  position: relative;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}

body > * {
  position: relative;
  z-index: 1;
}

body::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    url("./ロゴ_マーク.svg"),
    url("./ロゴ_マーク.svg"),
    url("./ロゴ_マーク.svg"),
    url("./ロゴ_マーク.svg"),
    url("./ロゴ_マーク.svg");
  background-position:
    right -8vw top 14vh,
    left 7vw top 54vh,
    right 12vw top 92vh,
    left -5vw top 138vh,
    right 28vw top 188vh;
  background-repeat: no-repeat;
  background-size:
    min(38vw, 430px),
    min(18vw, 210px),
    min(26vw, 300px),
    min(44vw, 500px),
    min(14vw, 160px);
  content: "";
  opacity: 0.026;
  pointer-events: none;
}

body::after {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    url("./ロゴ_マーク.svg"),
    url("./ロゴ_マーク.svg"),
    url("./ロゴ_マーク.svg");
  background-position:
    left 19vw bottom 18vh,
    right -3vw bottom 46vh,
    left 58vw bottom -8vh;
  background-repeat: no-repeat;
  background-size:
    min(12vw, 145px),
    min(31vw, 360px),
    min(21vw, 250px);
  content: "";
  opacity: 0.018;
  pointer-events: none;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

picture {
  display: block;
  width: 100%;
  height: 100%;
}

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

button {
  font: inherit;
}

.page-shell {
  width: min(var(--shell-width), var(--shell-max));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: var(--header-height);
  overflow: visible;
  transition: background-color 240ms ease, border-color 240ms ease, box-shadow 240ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 16px 48px rgba(23, 19, 15, 0.04);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--shell-width), var(--shell-max));
  height: 100%;
  margin-inline: auto;
  gap: 48px;
}

.site-header__logo,
.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
}

.brand-mark {
  width: var(--logo-size-desktop, 132px);
  height: var(--logo-size-desktop, 132px);
  object-fit: contain;
}

.brand-word {
  display: grid;
  gap: 2px;
}

.brand-word__gallery {
  font-family: var(--font-heading);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.brand-word__matsui {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.site-footer__logo {
  display: grid;
  justify-items: start;
  gap: 8px;
}

.site-footer__logo .brand-mark {
  width: var(--footer-logo-size, 220px);
  height: var(--footer-logo-size, 220px);
}

.site-footer__logo .brand-word__matsui {
  font-size: 24px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  padding-top: 8px;
}

.site-nav__link,
.text-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: fit-content;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.11em;
  line-height: 1.3;
  min-height: 44px;
  text-transform: uppercase;
}

.text-link {
  padding-block: 14px;
}

.text-link--lowercase {
  text-transform: none;
  letter-spacing: 0.02em;
}

.site-nav__link::after,
.text-link::after {
  position: absolute;
  right: 0;
  bottom: -5px;
  left: 0;
  height: 1px;
  background: var(--color-accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 240ms ease;
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.text-link:hover::after,
.text-link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-header__toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: 92vh;
  padding-top: var(--header-height);
}

.hero__media {
  position: relative;
  height: calc(92vh - var(--header-height));
  min-height: 560px;
  overflow: hidden;
  background: #eee9df;
}

.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.035);
  transition: opacity 1200ms ease, transform 5000ms ease;
}

.hero__slide.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

.hero__media img {
  filter: grayscale(10%) saturate(0.92) contrast(0.98);
}

.hero__slide--top {
  object-fit: contain;
  object-position: center top;
  background: #fff;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 28px;
  padding-top: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-muted);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.13em;
  line-height: 1.3;
}

.hero__title,
.section__title,
.about__statement {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.05;
}

.hero__title {
  grid-column: 1;
  font-size: clamp(42px, 5vw, 72px);
}

.hero__meta {
  grid-column: 2;
  margin: 0 0 8px;
  color: var(--color-muted);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.section {
  padding-block: var(--section-space);
}

.subpage-main {
  padding-top: var(--header-height);
}

.subpage-main > .section:first-child,
.subpage-main > .content-block:first-child {
  padding-top: 72px;
}

.page-hero {
  padding-block: var(--section-space) 64px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0));
}

.breadcrumb {
  margin-bottom: 46px;
  color: var(--color-muted);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.11em;
  line-height: 1.5;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb__item:not(:last-child)::after {
  margin-left: 8px;
  color: var(--color-muted);
  content: "/";
}

.breadcrumb a {
  color: var(--color-text);
}

.page-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.05;
}

.page-hero__lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.8;
}

p {
  max-width: 42em;
}

.section__header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  margin-bottom: 42px;
}

.section__header .eyebrow {
  grid-column: 1 / -1;
}

.section__title {
  font-size: clamp(28px, 3vw, 42px);
}

.text-nowrap {
  white-space: nowrap;
}

.content-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 64px;
}

.content-block {
  padding-block: var(--section-space);
}

.content-block--compact {
  padding-block: 72px 0;
}

.detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 560px) minmax(280px, 1fr);
  gap: 54px;
  align-items: center;
  padding-top: 72px;
}

.detail-hero__image {
  width: 100%;
  max-width: 560px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #fff;
}

.detail-hero__image--contain img {
  object-fit: contain;
  object-position: center;
}

.detail-hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.08;
}

.detail-hero__meta {
  margin: 20px 0 0;
  color: var(--color-muted);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.plain-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.info-list {
  display: grid;
  gap: 18px;
  margin: 0;
}

.info-list__item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}

.info-list dt {
  color: var(--color-muted);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.info-list dd {
  margin: 0;
}

.contact-form {
  display: grid;
  gap: 22px;
}

.contact-shell {
  max-width: 760px;
}

.access-lead p {
  margin: 0 0 24px;
}

.exhibition-notice {
  max-width: 680px;
}

.map-embed {
  margin-top: 56px;
  aspect-ratio: 16 / 9;
  min-height: 360px;
}

.map-embed iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  filter: grayscale(18%) saturate(0.9);
}

.news-list {
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  padding: 22px 0;
}

.news-item time {
  color: var(--color-muted);
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.news-item__title {
  font-size: 16px;
  font-weight: 500;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
  background: transparent;
  color: var(--color-text);
  font: inherit;
}

.form-field textarea {
  min-height: 150px;
  resize: vertical;
}

.button-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  justify-self: start;
  border: 0;
  border-bottom: 1px solid var(--color-accent);
  padding: 0 0 6px;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.stat-card {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(42px, 6vw, 78px);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
}

.stat-card__label {
  display: block;
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.7;
}

.process-list,
.faq-list {
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-item,
.faq-item {
  border-top: 1px solid var(--color-border);
  padding-top: 22px;
}

.process-item__number {
  display: block;
  margin-bottom: 10px;
  color: var(--color-muted);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.process-item__title,
.faq-item__question {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
}

.process-item__text,
.faq-item__answer {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-tab {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border: 1px solid var(--color-border);
  padding: 0 16px;
  background: rgba(255, 255, 255, 0.36);
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.filter-tab.is-active {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-bg);
}

.product-actions {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.inquiry-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.7;
}

.card-grid {
  display: grid;
  gap: 36px 28px;
}

.card-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid--four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card__link {
  display: block;
}

.card__image {
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #eee9df;
}

.card__image--square {
  aspect-ratio: 1;
}

.card__image img {
  transition: transform 360ms ease;
}

.card__link:hover .card__image img,
.card__link:focus-visible .card__image img {
  transform: scale(1.03);
}

.card__body {
  display: grid;
  gap: 2px;
  padding-top: 14px;
}

.card__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.45;
}

.card__meta {
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.6;
}

.card__price {
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.card__facts {
  display: grid;
  gap: 4px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.6;
}

.history-media {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 56px;
}

.history-media__item {
  display: grid;
  gap: 12px;
}

.history-media__image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #eee9df;
}

.history-media__image--portrait {
  aspect-ratio: 3 / 4;
}

.history-media__caption {
  margin: 0;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.6;
}

.about {
  padding-block: var(--section-space);
}

.about__inner {
  display: grid;
  grid-template-columns: 7fr 4fr;
  gap: 80px;
  border-top: 1px solid var(--color-border);
  padding-top: 56px;
}

.about__inner .eyebrow {
  grid-column: 1 / -1;
}

.about__statement {
  max-width: 13em;
  font-size: clamp(28px, 3.1vw, 44px);
  line-height: 1.5;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.about__statement--about-page {
  max-width: 15em;
  font-size: clamp(26px, 2.9vw, 42px);
}

.about__text {
  align-self: end;
  color: var(--color-muted);
  max-width: 35em;
}

.about__text p {
  margin: 0 0 24px;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 28px 34px;
  background: #ffffff;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
}

.site-footer__copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.6;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 22px;
}

.site-footer__icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  color: var(--color-text);
}

.site-footer__icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.section-fade {
  opacity: 0;
  transform: translateY(64px);
}

.section-fade.is-visible {
  animation: fadein_anime 0.6s cubic-bezier(.165, .84, .44, 1) forwards;
}

@keyframes fadein_anime {
  0% {
    opacity: 0;
    transform: translate(0, 64px);
  }

  100% {
    opacity: 1;
    transform: translate(0, 0);
  }
}

@media (max-width: 1023px) {
  :root {
    --section-space: 100px;
  }

  .card-grid--three,
  .card-grid--four,
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__content,
  .about__inner,
  .content-grid,
  .detail-hero {
    grid-template-columns: 1fr;
  }

  .hero__meta {
    grid-column: 1;
  }

  .about__inner {
    gap: 32px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: var(--header-height-mobile, 112px);
    --section-space: 56px;
  }

  body {
    font-size: 14px;
  }

  .site-header__logo,
  .site-footer__logo {
    font-size: 16px;
  }

  .site-header__inner {
    gap: 20px;
  }

  .brand-mark {
    width: var(--logo-size-mobile, 96px);
    height: var(--logo-size-mobile, 96px);
  }

  .brand-word__gallery {
    font-size: 8px;
  }

  .brand-word__matsui {
    font-size: 17px;
  }

  .site-header__toggle {
    position: relative;
    z-index: 21;
    display: grid;
    align-content: center;
    gap: 7px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
  }

  .site-header__toggle span {
    display: block;
    width: 24px;
    height: 1px;
    margin-inline: auto;
    background: currentColor;
    transition: transform 240ms ease;
  }

  .site-header.is-open .site-header__toggle span:first-child {
    transform: translateY(4px) rotate(32deg);
  }

  .site-header.is-open .site-header__toggle span:last-child {
    transform: translateY(-4px) rotate(-32deg);
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto;
    display: grid;
    gap: 0;
    padding: 18px 20px 28px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 220ms ease, transform 220ms ease;
  }

  .site-header.is-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav__link {
    width: 100%;
    padding-block: 14px;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
  }

  .hero {
    min-height: auto;
  }

  .hero__media {
    height: 62vh;
    min-height: 420px;
  }

  .hero__content {
    gap: 10px;
    padding-top: 22px;
  }

  .hero__title {
    font-size: clamp(34px, 10vw, 40px);
  }

  .section__header {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 28px;
  }

  body::before {
    background-position:
      right -24vw top 18vh,
      left 4vw top 62vh,
      right 6vw top 104vh,
      left -22vw top 154vh,
      right 18vw top 210vh;
    background-size:
      68vw,
      28vw,
      44vw,
      76vw,
      24vw;
    opacity: 0.022;
  }

  body::after {
    background-position:
      left 16vw bottom 16vh,
      right -18vw bottom 48vh,
      left 52vw bottom -6vh;
    background-size:
      24vw,
      54vw,
      38vw;
    opacity: 0.016;
  }

  .page-hero {
    padding-block: 56px 46px;
  }

  .breadcrumb {
    margin-bottom: 34px;
  }

  .content-block,
  .content-block--compact {
    padding-block: 56px;
  }

  .subpage-main > .section:first-child,
  .subpage-main > .content-block:first-child {
    padding-top: 40px;
  }

  .info-list__item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .card-grid--three,
  .card-grid--four,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .card-grid {
    gap: 34px;
  }

  .about {
    padding-block: 56px;
  }

  .about__inner {
    padding-top: 34px;
  }

  .site-footer__inner {
    align-items: center;
    gap: 8px;
  }

  .site-footer__links {
    justify-content: center;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .map-embed {
    aspect-ratio: 4 / 5;
    min-height: 320px;
  }

  .history-media {
    grid-template-columns: 1fr;
    margin-top: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}