:root {
  color-scheme: light;
  --ink: #17211b;
  --muted: #5c6a61;
  --paper: #fbfaf5;
  --surface: #ffffff;
  --line: #dfe4d8;
  --accent: #1f6f4a;
  --accent-dark: #12462f;
  --warm: #f2e6d1;
  --shadow: 0 18px 50px rgba(23, 33, 27, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    Meiryo, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
}

a {
  color: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(251, 250, 245, 0.92);
  border-bottom: 1px solid rgba(223, 228, 216, 0.8);
  backdrop-filter: blur(14px);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: #fff;
  background: var(--accent-dark);
  font-weight: 800;
  letter-spacing: 0;
}

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

.brand strong {
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent-dark);
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.language-button {
  min-width: 38px;
  min-height: 32px;
  padding: 5px 9px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
}

.language-button.is-active {
  color: #fff;
  background: var(--accent-dark);
}

.hero {
  position: relative;
  min-height: 680px;
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
  background: #0a0f0d;
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  z-index: -2;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.035);
  transition:
    opacity 1400ms ease,
    transform 6200ms ease;
  will-change: opacity, transform;
}

.hero-slide.is-active {
  opacity: 1;
  transform: scale(1);
}

.hero-slide:first-child {
  object-position: 42% center;
}

.hero-slide:nth-child(2) {
  object-position: 48% center;
}

.hero-slide:nth-child(3) {
  object-position: center center;
}

.hero-slide:nth-child(4) {
  object-position: center center;
}

.hero-overlay {
  z-index: -1;
  background:
    linear-gradient(0deg, rgba(8, 13, 11, 0.72) 0%, rgba(8, 13, 11, 0.34) 42%, rgba(8, 13, 11, 0.42) 100%),
    linear-gradient(90deg, rgba(8, 13, 11, 0.24), rgba(8, 13, 11, 0.16));
}

.hero-rail {
  position: absolute;
  top: 24px;
  right: clamp(18px, 4vw, 56px);
  left: clamp(18px, 4vw, 56px);
  height: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
}

.hero-content {
  width: min(980px, calc(100% - 36px));
  margin: 0 auto clamp(46px, 8vw, 86px);
  color: #fff;
  text-align: center;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.44);
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #d9f2df;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3,
.brand strong {
  font-family: "Noto Serif JP", serif;
}

h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(54px, 9vw, 120px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-content p:not(.eyebrow) {
  max-width: 760px;
  margin: 24px auto 0;
  font-size: 18px;
}

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

.hero-caption {
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 800;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

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

.button.primary:hover {
  background: var(--accent-dark);
}

.button.secondary {
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.88);
  border-color: rgba(31, 111, 74, 0.18);
}

.button.full {
  width: 100%;
}

.section {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 92px 0;
}

.intro,
.access,
.rates,
.reserve {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 72px);
}

.section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

.intro-copy > p,
.section-heading > p,
.access p,
.rates p,
.reserve p {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.facility-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 30px;
}

.facility-facts div {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.facility-facts span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.facility-facts strong {
  display: block;
  margin-top: 4px;
  color: var(--accent-dark);
  font-size: 16px;
}

.feature-grid div,
.scene-grid article,
.activity-grid article,
.rates-panel,
.reserve-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(23, 33, 27, 0.06);
}

.feature-grid div {
  padding: 18px;
}

.feature-grid span,
.scene-grid span,
.activity-grid span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
}

.feature-grid strong {
  display: block;
  margin-top: 8px;
}

.feature-grid p,
.scene-grid p,
.activity-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 32px;
}

.floor-plan {
  padding-top: 24px;
}

.floor-plan-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.floor-plan-card img {
  width: 100%;
  background: #fff;
}

.floor-plan-card figcaption {
  padding: 14px 18px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.photo-section {
  width: 100%;
  padding-inline: clamp(18px, 4vw, 56px);
  background: #eef3e9;
}

.photo-section .section-heading,
.photo-grid {
  width: min(1120px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.photo-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  grid-auto-rows: 220px;
  gap: 14px;
}

.photo-card {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--surface);
}

.photo-card.large {
  grid-row: span 2;
}

.photo-card img,
.detail-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-card figcaption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 6px 10px;
  border-radius: 6px;
  color: #fff;
  background: rgba(18, 70, 47, 0.78);
  font-size: 13px;
  font-weight: 800;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  width: min(1120px, 100%);
  margin: 14px auto 0;
}

.detail-grid figure {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--surface);
}

.detail-grid img {
  aspect-ratio: 4 / 3;
}

.detail-grid figcaption {
  padding: 10px 12px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 800;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.scene-grid article {
  padding: 24px;
}

.scene-grid h3 {
  margin: 14px 0 0;
  font-size: 20px;
  line-height: 1.35;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.activity-visual {
  position: relative;
  overflow: hidden;
  margin: 0 0 18px;
  border-radius: 8px;
  background: var(--surface);
}

.activity-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  object-position: center center;
}

.activity-visual figcaption {
  position: absolute;
  right: 18px;
  bottom: 16px;
  left: 18px;
  color: #fff;
  font-weight: 800;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.62);
}

.activity-grid article {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  padding: 24px;
}

.activity-grid h3 {
  margin: 14px 0 0;
  font-size: 20px;
  line-height: 1.35;
}

.activity-grid a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  margin-top: auto;
  padding: 9px 12px;
  border: 1px solid rgba(31, 111, 74, 0.2);
  border-radius: 8px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.activity-grid a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.access {
  align-items: stretch;
}

.access-list {
  margin: 28px 0 0;
  border-top: 1px solid var(--line);
}

.access-list div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.access-list dt {
  color: var(--accent-dark);
  font-weight: 800;
}

.access-list dd {
  margin: 0;
  color: var(--muted);
}

.map-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 24px;
  padding: 10px 16px;
  border: 1px solid rgba(31, 111, 74, 0.22);
  border-radius: 8px;
  color: var(--accent-dark);
  background: var(--surface);
  font-weight: 800;
  text-decoration: none;
}

.map-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.map-frame {
  width: 100%;
  min-height: 380px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: block;
  background: var(--warm);
}

.rates {
  align-items: center;
}

.rates-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.rates-panel {
  padding: 24px;
}

.rate-list {
  display: grid;
  gap: 10px;
  margin: 0;
}

.rate-list div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.rate-list div.is-featured {
  border-color: rgba(31, 111, 74, 0.34);
  background: #f6f3e9;
}

.rate-list dt {
  color: var(--accent-dark);
  font-weight: 800;
}

.rate-list dd {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  text-align: right;
}

.rate-list .is-featured dd {
  color: var(--accent-dark);
  font-size: 24px;
}

.rates-note {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.rates-note p {
  margin: 0;
  font-size: 13px;
}

.rates-note p + p {
  margin-top: 6px;
}

.reserve {
  align-items: center;
}

.reserve-panel {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.payment-note {
  margin-top: 8px;
  padding: 16px;
  border-radius: 8px;
  background: #f6f3e9;
}

.payment-note p {
  margin: 6px 0 0;
  font-size: 14px;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px clamp(18px, 4vw, 56px);
  color: #fff;
  background: var(--accent-dark);
}

.footer p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.74);
}

.footer a {
  color: #fff;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .header-actions {
    width: 100%;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav {
    width: 100%;
    overflow-x: visible;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 620px;
  }

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

  .feature-grid,
  .facility-facts,
  .scene-grid,
  .activity-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .photo-grid,
  .detail-grid {
    grid-template-columns: 1fr 1fr;
  }

  .photo-card.large {
    grid-column: span 2;
  }
}

@media (max-width: 620px) {
  .site-header {
    position: static;
  }

  .hero {
    min-height: 590px;
  }

  .hero-overlay {
    background:
      linear-gradient(0deg, rgba(8, 13, 11, 0.78) 0%, rgba(8, 13, 11, 0.42) 52%, rgba(8, 13, 11, 0.48) 100%),
      linear-gradient(90deg, rgba(8, 13, 11, 0.26), rgba(8, 13, 11, 0.18));
  }

  .hero-content {
    margin-inline: 18px;
    margin-bottom: 38px;
    text-align: left;
  }

  h1 {
    font-size: 44px;
    line-height: 1.04;
  }

  .hero-content p:not(.eyebrow) {
    margin-inline: 0;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-slide:first-child {
    object-position: 34% center;
  }

  .feature-grid,
  .facility-facts,
  .scene-grid,
  .activity-grid,
  .photo-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .photo-card.large {
    grid-column: auto;
  }

  .photo-grid {
    grid-auto-rows: 210px;
  }

  .activity-visual img {
    aspect-ratio: 4 / 3;
  }

  .rate-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .rate-list dd {
    text-align: left;
  }

  .rates-actions .button {
    width: 100%;
  }

  .access-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

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

/* Availability calendar */
.calendar .section-heading {
  margin-bottom: 8px;
}

.calendar-legend {
  display: flex;
  gap: 22px;
  align-items: center;
  margin: 18px 0 26px;
  font-size: 14px;
  color: var(--muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-swatch {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  border: 1px solid var(--line);
}

.legend-swatch.is-open {
  background: var(--surface);
  border-color: var(--accent);
}

.legend-swatch.is-booked {
  background: #e7e9e3;
  border-color: #d2d6cc;
}

.calendar-board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.calendar-status {
  color: var(--muted);
  margin: 0;
}

.calendar-month {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  padding: 20px;
  box-shadow: var(--shadow);
}

.calendar-month h3 {
  margin: 0 0 14px;
  font-size: 18px;
  color: var(--accent-dark);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-grid .dow {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  padding-bottom: 6px;
}

.calendar-grid .dow.sun {
  color: #c0563f;
}

.calendar-grid .dow.sat {
  color: #3f6fc0;
}

.calendar-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  border-radius: 9px;
  border: 1px solid transparent;
}

.calendar-cell.is-empty {
  border: none;
}

.calendar-cell.is-open {
  background: var(--surface);
  border-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.calendar-cell.is-open:hover {
  background: var(--accent);
  color: #fff;
}

.calendar-cell.is-booked {
  background: #e7e9e3;
  color: #9aa298;
  text-decoration: line-through;
}

.calendar-cell.is-past {
  color: #c2c8bd;
}

.calendar-updated {
  margin: 22px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.calendar-note {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 620px) {
  .calendar-board {
    grid-template-columns: 1fr;
  }
}