:root {
  --water: #5ec4ea;
  --water-deep: #2a9bc7;
  --water-muted: #8ad4ef;
  --water-pale: #e5f6fc;
  --water-bg: #f2fbff;
  --yellow: #f7d54a;
  --yellow-deep: #e8bc1a;
  --yellow-soft: #fff9e0;
  --primary-navy: #1a6d8c;
  --deep-blue: #2a9bc7;
  --sky-blue: #7ed3f5;
  --white: #ffffff;
  --light-gray: #f5fcff;
  --border: #b8e4f5;
  --text: #2d4f5c;
  --hero-overlay: rgba(28, 26, 24, 0.42);
  --accent-peach: #f2d3b7;
  --accent-cream: #fffbeb;
  --s-8: 8px;
  --s-16: 16px;
  --s-24: 24px;
  --s-40: 40px;
  --s-64: 64px;
  --s-96: 96px;
  --s-140: 140px;
  --max-w: 1320px;
  --header-h: 92px;
  --header-h-mobile: 76px;
  --ease-main: cubic-bezier(.22, .61, .36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 18px;
  line-height: 1.85;
  letter-spacing: 0.03em;
  background: var(--water-bg);
  position: relative;
  overflow-x: hidden;
  isolation: isolate;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

main {
  position: relative;
  flex: 1;
  overflow: hidden;
}

.bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bg-shape {
  position: absolute;
  opacity: 0.72;
}

.bg-shape--a {
  border-radius: 64% 36% 43% 57% / 44% 64% 36% 56%;
}

.bg-shape--b {
  border-radius: 42% 58% 63% 37% / 57% 42% 58% 43%;
}

.bg-shape--c {
  border-radius: 53% 47% 34% 66% / 51% 35% 65% 49%;
}

.container {
  width: min(100% - 48px, var(--max-w));
  margin-inline: auto;
}

.section {
  padding: var(--s-96) 0;
}

.section-title {
  font-size: clamp(32px, 4vw, 60px);
  font-weight: 700;
  color: var(--primary-navy);
  line-height: 1.3;
  margin: 0 0 var(--s-40);
}

.eyebrow {
  display: inline-block;
  margin-bottom: var(--s-16);
  color: var(--yellow-deep);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.activity-page .eyebrow {
  color: var(--yellow);
}

.activity-page .th-accent-yellow {
  color: var(--yellow-deep);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 999;
  transition: background-color 0.5s ease;
}

.site-header.is-scrolled {
  background: rgba(242, 251, 255, 0.96);
  backdrop-filter: blur(8px);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-24);
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.gnav {
  display: flex;
  align-items: center;
  gap: var(--s-24);
}

.gnav a {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-navy);
  transition: color 0.3s ease;
}

.gnav a:hover {
  color: var(--water-deep);
}

.menu-button {
  display: none;
  width: 48px;
  height: 48px;
  border: 2px solid var(--water-muted);
  border-radius: 50%;
  background: var(--white);
  color: var(--water-deep);
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  transform: translateY(0);
  will-change: transform;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
  z-index: 1;
}

.hero-media img,
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  color: var(--white);
  padding-top: var(--header-h);
}

.hero-label {
  margin: 0 0 var(--s-24);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--white);
  text-shadow: 0 2px 12px rgba(0, 80, 120, 0.45);
}

.hero-title {
  margin: 0 0 var(--s-24);
  font-size: clamp(52px, 7vw, 110px);
  line-height: 1.15;
  font-weight: 700;
}

.hero-lead {
  margin: 0;
  max-width: 42ch;
}

.scroll-indicator {
  position: absolute;
  left: var(--s-24);
  bottom: var(--s-40);
  color: var(--white);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  gap: var(--s-16);
}

.scroll-indicator::before {
  content: "";
  width: 2px;
  height: 56px;
  background: var(--white);
  animation: scrollPulse 1.6s infinite ease;
}

@keyframes scrollPulse {
  0% { opacity: 0.25; transform: scaleY(0.4); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0.25; transform: scaleY(0.4); transform-origin: top; }
}

.breadcrumbs {
  margin-top: 0;
  padding: var(--s-24) 0;
  border-bottom: 1px solid var(--border);
  background: var(--light-gray);
}

/* 全ページでパンくず非表示 */
.breadcrumbs {
  display: none !important;
}

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

.breadcrumbs ol {
  display: flex;
  gap: var(--s-8);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.88rem;
}

.page-hero {
  position: relative;
  min-height: clamp(260px, 44vw, 500px);
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--water-pale);
}

.page-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(22, 30, 34, 0.44);
}

.page-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  color: var(--white);
  padding: clamp(76px, 10vw, 126px) 0 var(--s-64);
}

.section--booking {
  background: var(--water-pale);
}

.section--feature-split {
  background: #efefef;
  padding: var(--s-96) 0;
}

.feature-split-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-40);
  align-items: stretch;
}

.feature-spot-card {
  display: grid;
  grid-template-columns: minmax(320px, 1.05fr) minmax(0, 1fr);
  column-gap: var(--s-40);
  row-gap: 12px;
  min-width: 0;
  align-items: start;
}

.feature-spot-media {
  display: block;
  grid-column: 1;
  grid-row: 1 / 6;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid #d8d8d8;
  background: #fff;
}

.feature-spot-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  vertical-align: middle;
}

.feature-spot-title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.8rem);
  font-weight: 700;
  color: #111;
  line-height: 1.25;
}

.feature-spot-tags {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-8);
  margin: 0;
}

.feature-spot-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border: 1px solid #d4d4d4;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  color: #5f5f5f;
  background: var(--white);
}

.feature-spot-text {
  grid-column: 2;
  margin: 0;
  color: #232323;
  font-size: 0.98rem;
  line-height: 1.8;
}

.feature-spot-more,
.circle-link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--s-16);
  margin-top: var(--s-24);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  width: fit-content;
}

.feature-spot-more {
  grid-column: 2;
  justify-self: end;
  align-self: end;
}

.feature-spot-more:hover,
.circle-link:hover {
  color: var(--water-deep);
}

.feature-spot-more-icon,
.circle-link-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--yellow);
  flex-shrink: 0;
  border: none;
  box-shadow: none;
  transition: transform 0.2s ease;
}

.feature-spot-arrow,
.circle-link-arrow {
  font-size: 1.15rem;
  line-height: 1;
  color: #1a1a1a;
  font-weight: 700;
}

.feature-spot-more:hover .feature-spot-more-icon,
.circle-link:hover .circle-link-icon {
  transform: translateX(2px);
}

.calendar-intro {
  margin: calc(-1 * var(--s-24)) 0 var(--s-40);
  max-width: 62ch;
}

.calendar-intro a {
  color: var(--water-deep);
  font-weight: 700;
  text-decoration: underline;
}

.booking-calendar {
  max-width: 520px;
  margin: 0 auto;
  padding: var(--s-24);
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 20px;
}

.calendar-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-16);
  margin-bottom: var(--s-16);
}

.calendar-month-label {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.calendar-nav-btn {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 2px solid var(--water-muted);
  background: var(--water-pale);
  color: var(--water-deep);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.calendar-nav-btn:hover {
  background: var(--yellow);
  border-color: var(--yellow-deep);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: var(--s-8);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--water-deep);
  text-align: center;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.calendar-cell {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  background: var(--light-gray);
  border: 1px solid var(--border);
}

.calendar-cell--empty {
  background: transparent;
  border: none;
}

.calendar-cell--muted {
  opacity: 0.45;
}

.calendar-cell--session {
  background: var(--yellow);
  border-color: var(--yellow-deep);
  color: #5a4a10;
  box-shadow: none;
}

.calendar-cell--today {
  outline: 2px solid var(--water-deep);
  outline-offset: 2px;
}

.calendar-legend {
  list-style: none;
  margin: var(--s-24) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-16);
  font-size: 0.88rem;
  color: var(--text);
}

.calendar-legend li {
  display: flex;
  align-items: center;
  gap: var(--s-8);
}

.legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
}

.legend-dot--session {
  background: var(--yellow);
  border: 1px solid var(--yellow-deep);
}

.legend-dot--muted {
  background: var(--light-gray);
  border: 1px solid var(--border);
}

.map-card .map-embed-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 260px;
  background: var(--water-pale);
}

.map-card .map-embed-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.page-title {
  margin: 0;
  font-size: clamp(42px, 5vw, 72px);
  color: var(--white);
  line-height: 1.2;
  text-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
}

.page-hero-copy {
  margin: var(--s-16) 0 0;
  max-width: 56ch;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.grid-2,
.grid-3 {
  display: grid;
  gap: var(--s-24);
}

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

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

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  transition: transform 0.45s ease;
}

.card:hover {
  transform: translateY(-6px) scale(1.015);
}

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

.card-body {
  padding: var(--s-24);
}

.card h3 {
  margin: 0 0 var(--s-16);
  color: var(--primary-navy);
  font-size: 1.3rem;
}

.pill {
  display: inline-flex;
  border: 1px solid var(--water-deep);
  color: var(--water-deep);
  background: var(--water-pale);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 12px;
  margin-bottom: var(--s-16);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 14px 28px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.button-primary {
  background: var(--yellow);
  color: #4a3d08;
  border: 2px solid var(--yellow-deep);
}

.button:hover {
  transform: translateY(-2px);
}

.news-list {
  display: grid;
  gap: var(--s-16);
}

.news-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  align-items: center;
  gap: var(--s-16);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--s-16);
  background: var(--yellow-soft);
}

.news-date {
  color: #506070;
  font-size: 0.92rem;
}

.news-link {
  color: var(--primary-navy);
  font-weight: 700;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  border-bottom: 1px solid var(--border);
  padding: var(--s-16) 0;
  vertical-align: top;
}

.info-table th {
  width: 220px;
  color: var(--primary-navy);
  text-align: left;
}

.contact-form {
  max-width: 860px;
}

.form-row {
  display: grid;
  gap: var(--s-8);
  margin-bottom: var(--s-24);
}

label {
  font-weight: 700;
  color: var(--primary-navy);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  font: inherit;
}

textarea {
  min-height: 220px;
  resize: vertical;
}

.site-footer {
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.footer-top-bar {
  background: #72b1da;
}

.footer-top-nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}

.footer-top-nav a {
  color: #fff;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1;
  padding: 0 22px;
  border-left: 1px solid rgba(255, 255, 255, 0.35);
}

.footer-top-nav a:first-child {
  border-left: none;
}

.footer-company-bar {
  background: #fff;
  border-top: 1px solid #a8d0e8;
  border-bottom: 1px solid #d8e5ee;
}

.footer-company-inner {
  min-height: 122px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  align-items: center;
  gap: var(--s-24);
  padding: 20px 0 16px;
}

.footer-company-brand h3 {
  margin: 0;
  color: #315a75;
  font-size: 1.85rem;
  line-height: 1.08;
  letter-spacing: 0.02em;
}

.footer-company-brand p {
  margin: 4px 0 0;
  color: #597f98;
  font-size: 0.82rem;
}

.footer-company-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--s-24);
  align-items: start;
}

.footer-company-meta p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.55;
  color: #2a485e;
  padding-left: var(--s-16);
  border-left: 1px solid #d7e3ec;
}

.footer-company-meta p:first-child {
  border-left: none;
  padding-left: 0;
}

.footer-company-meta strong {
  color: #193a50;
  display: inline-block;
  margin-bottom: 4px;
  padding-bottom: 2px;
  border-bottom: 3px solid var(--yellow);
}

.copyright {
  margin: 0;
  padding: 0 0 14px;
  font-size: 0.78rem;
  color: #6b8799;
}

.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1s var(--ease-main), transform 1s var(--ease-main);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 1200;
  background: rgba(30, 120, 150, 0.94);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu nav {
  display: grid;
  gap: var(--s-24);
  text-align: center;
}

.mobile-menu a {
  color: var(--white);
  font-weight: 700;
  font-size: 1.3rem;
}

.mobile-menu-close {
  position: absolute;
  top: var(--s-24);
  right: var(--s-24);
  border: 1px solid var(--white);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  background: transparent;
  color: var(--white);
}

@media (max-width: 1200px) {
  .container {
    width: min(100% - 40px, var(--max-w));
  }
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 992px) {
  .gnav {
    display: none;
  }
  .menu-button {
    display: inline-grid;
    place-items: center;
    width: 92px;
    height: 92px;
    border: none;
    border-radius: 50%;
    background: var(--yellow);
    color: #233f4f;
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
    padding-top: 22px;
    position: relative;
    letter-spacing: 0.01em;
  }
  .menu-button::before {
    content: "";
    position: absolute;
    top: 26px;
    left: 50%;
    width: 30px;
    height: 3px;
    background: #233f4f;
    transform: translateX(-50%);
    box-shadow: 0 12px 0 #233f4f;
  }
  .grid-2,
  .grid-3,
  .feature-split-grid {
    grid-template-columns: 1fr;
  }
  .feature-spot-card {
    grid-template-columns: 1fr;
    row-gap: var(--s-16);
  }
  .feature-spot-media,
  .feature-spot-title,
  .feature-spot-tags,
  .feature-spot-text,
  .feature-spot-more {
    grid-column: 1;
    grid-row: auto;
  }
  .feature-spot-more {
    justify-self: end;
  }
  .footer-company-inner {
    grid-template-columns: 1fr;
    gap: var(--s-16);
    min-height: 0;
  }
  .footer-company-meta {
    grid-template-columns: 1fr 1fr;
  }
  .footer-company-meta p:nth-child(odd) {
    border-left: none;
    padding-left: 0;
  }
  .news-item {
    grid-template-columns: 1fr;
    gap: var(--s-8);
  }
}

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }
  .section {
    padding: var(--s-64) 0;
  }
  .hero {
    min-height: auto;
    display: block;
  }
  .hero-media {
    position: relative;
    inset: auto;
    transform: none !important;
    z-index: 0;
  }
  .hero-media img,
  .hero-media video {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: cover;
  }
  .hero-content {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: var(--s-24);
    z-index: 1;
  }
  .hero-content::before {
    content: "";
    position: absolute;
    inset: auto 0 0 0;
    width: 100%;
    height: 58%;
    background: linear-gradient(180deg, rgba(16, 33, 45, 0) 0%, rgba(16, 33, 45, 0.72) 58%, rgba(16, 33, 45, 0.9) 100%);
    border-radius: 0;
    z-index: -1;
  }
  .hero-label {
    font-size: 0.85rem;
    margin: 0 0 8px;
    letter-spacing: 0.04em;
  }
  .hero-title {
    font-size: clamp(30px, 8.2vw, 42px);
    margin: 0 0 8px;
    line-height: 1.1;
  }
  .hero-lead {
    font-size: 0.84rem;
    line-height: 1.55;
    max-width: 100%;
  }
  .subpage .page-hero {
    min-height: clamp(340px, 62vw, 500px);
  }
  .page-hero-inner {
    padding: clamp(56px, 8vw, 84px) 0 var(--s-24);
  }
  .page-title {
    font-size: clamp(28px, 6.8vw, 42px);
    line-height: 1.1;
  }
  .page-hero-copy {
    font-size: 0.82rem;
    line-height: 1.5;
    margin-top: 8px;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 28px, var(--max-w));
  }
  .header-inner {
    min-height: var(--header-h-mobile);
  }
  .menu-button {
    width: 56px;
    height: 56px;
    font-size: 11px;
    padding-top: 13px;
  }
  .menu-button::before {
    top: 14px;
    width: 18px;
    height: 2px;
    box-shadow: 0 7px 0 #233f4f;
  }
  .footer-top-nav {
    min-height: 56px;
  }
  .footer-top-nav a {
    padding: 8px 12px;
    border-left: none;
    font-size: 0.78rem;
  }
  .footer-company-brand h3 {
    font-size: 1.3rem;
  }
  .footer-company-meta {
    grid-template-columns: 1fr;
    gap: var(--s-8);
  }
  .footer-company-meta p {
    border-left: none;
    padding-left: 0;
  }
  .breadcrumbs {
    margin-top: 0;
    padding: var(--s-16) 0;
  }
  .subpage main {
    padding-top: var(--header-h-mobile);
  }
  .hero-label {
    font-size: 0.78rem;
  }
  .hero-title {
    font-size: clamp(26px, 9.8vw, 34px);
  }
  .hero-lead {
    font-size: 0.78rem;
    line-height: 1.45;
  }
  .subpage .page-hero {
    min-height: 300px;
  }
  .page-hero-inner {
    padding: 48px 0 18px;
  }
  .page-title {
    font-size: clamp(24px, 8.2vw, 32px);
  }
  .page-hero-copy {
    font-size: 0.75rem;
    line-height: 1.4;
    margin-top: 6px;
  }
  .scroll-indicator {
    left: var(--s-16);
    bottom: var(--s-24);
  }
  .booking-calendar {
    max-width: none;
    padding: var(--s-16);
  }
  .calendar-cell {
    font-size: 0.82rem;
    border-radius: 8px;
  }
}