:root {
  --ink: #231f20;
  --muted: #665f56;
  --paper: #fffaf0;
  --paper-strong: #f8edd8;
  --red: #b6332a;
  --red-dark: #7f1f1a;
  --mustard: #d8a22f;
  --green: #2f6f63;
  --line: rgba(35, 31, 32, 0.16);
  --shadow: 0 18px 45px rgba(42, 28, 16, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
  padding: 12px clamp(18px, 4vw, 56px);
  background: rgba(255, 250, 240, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: var(--red);
  border-radius: 6px;
  font-weight: 800;
  font-size: 1.35rem;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  line-height: 1.25;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  padding: 9px 12px;
  color: var(--muted);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.94rem;
}

.site-nav a:hover {
  color: var(--ink);
  background: var(--paper-strong);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: min(760px, calc(100vh - 74px));
  overflow: hidden;
  background: #140f0b;
}

.hero-media,
.hero-media img,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.02);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(20, 15, 11, 0.9), rgba(20, 15, 11, 0.52) 44%, rgba(20, 15, 11, 0.18)),
    linear-gradient(0deg, rgba(20, 15, 11, 0.78), transparent 48%);
}

.hero-content {
  position: relative;
  width: min(980px, 100%);
  padding: clamp(76px, 13vh, 126px) clamp(20px, 6vw, 72px);
  color: #fff;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--mustard);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 9vw, 6.6rem);
  line-height: 1.03;
}

.lead {
  width: min(660px, 100%);
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.02rem, 2vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--red);
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.58);
}

.notice-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px clamp(20px, 6vw, 72px);
  color: #fff;
  background: var(--red-dark);
}

.notice-band div {
  display: grid;
  gap: 2px;
}

.notice-band span {
  color: rgba(255, 255, 255, 0.82);
}

.notice-band a {
  flex: 0 0 auto;
  padding: 9px 13px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
}

.section {
  padding: clamp(64px, 9vw, 112px) clamp(20px, 6vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 440px);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}

.section-copy h2,
.section-heading h2,
.visit h2,
.access h2 {
  margin: 0;
  font-size: clamp(1.85rem, 4vw, 3.2rem);
  line-height: 1.18;
}

.section-copy p:not(.eyebrow),
.access p {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.stats {
  display: grid;
  gap: 12px;
}

.stats div {
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.stats strong,
.stats span {
  display: block;
}

.stats strong {
  color: var(--red);
  font-size: 2rem;
  line-height: 1.1;
}

.stats span {
  margin-top: 4px;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  background: #fff;
}

.section-heading {
  grid-column: 1 / -1;
  margin-bottom: 10px;
}

.feature-card {
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feature-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.feature-card div {
  padding: 22px;
}

.feature-card h3 {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.4;
}

.feature-card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.visit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 26px;
  background: var(--paper-strong);
}

.visit-panel,
.link-panel {
  border-radius: 8px;
}

.visit-panel {
  padding: clamp(28px, 5vw, 42px);
  background: #fff;
  border: 1px solid var(--line);
}

.steps {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: flex;
  align-items: center;
  gap: 14px;
}

.steps span {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  color: #fff;
  background: var(--green);
  border-radius: 50%;
  font-weight: 800;
}

.steps p {
  margin: 0;
}

.link-panel {
  display: grid;
  align-content: start;
  gap: 12px;
}

.link-panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 16px 18px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

.link-panel a::after {
  content: "→";
  font-size: 1.2rem;
}

.gallery {
  background: #fff;
}

.gallery-strip {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr 1fr;
  gap: 14px;
  margin-top: 28px;
}

.gallery-strip img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 8px;
}

.gallery-strip img:nth-child(2) {
  margin-top: 44px;
}

.access {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  gap: 28px;
  align-items: stretch;
}

.access iframe {
  width: 100%;
  min-height: 360px;
  border: 0;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(20px, 6vw, 72px);
  color: #fff;
  background: var(--ink);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer span {
  color: rgba(255, 255, 255, 0.68);
}

.site-footer a {
  color: #fff;
  text-decoration: none;
}

@media (max-width: 860px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 16px;
    left: 16px;
    display: none;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    padding: 12px;
  }

  .intro,
  .visit,
  .access {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

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

  .gallery-strip img,
  .gallery-strip img:nth-child(2) {
    height: auto;
    margin-top: 0;
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 66px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .hero {
    min-height: 680px;
  }

  .hero-overlay {
    background:
      linear-gradient(0deg, rgba(20, 15, 11, 0.86), rgba(20, 15, 11, 0.36)),
      linear-gradient(90deg, rgba(20, 15, 11, 0.72), rgba(20, 15, 11, 0.22));
  }

  .hero-content {
    padding: 88px 20px 56px;
  }

  .hero-actions,
  .notice-band,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .button,
  .notice-band a {
    width: 100%;
  }
}