:root {
  --river: #0b6e7a;
  --river-deep: #064e57;
  --mint: #7ed0c5;
  --sky: #c9e8f0;
  --foam: #f3fbfb;
  --ink: #123038;
  --muted: #4a6a71;
  --sun: #e8a317;
  --sun-ink: #3a2a05;
  --line: rgba(11, 110, 122, 0.16);
  --shadow: 0 18px 50px rgba(6, 78, 87, 0.12);
  --radius: 18px;
  --font-display: "Syne", sans-serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --header-h: 4.25rem;
  --wrap: 68rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  background:
    radial-gradient(circle at 12% 18%, rgba(126, 208, 197, 0.28), transparent 28%),
    radial-gradient(circle at 88% 8%, rgba(232, 163, 23, 0.12), transparent 24%),
    linear-gradient(180deg, #eaf7f8 0%, var(--foam) 28%, #ffffff 100%);
  min-height: 100vh;
}

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

a {
  color: var(--river-deep);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--river);
}

:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--river-deep);
  color: #fff;
  text-decoration: none;
  border-radius: 0.45rem;
}

.skip-link:focus {
  top: 1rem;
}

.wrap {
  width: min(100% - 2rem, var(--wrap));
  margin-inline: auto;
}

.wrap--narrow {
  width: min(100% - 2rem, 42rem);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(243, 251, 251, 0.84);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  width: min(100% - 2rem, var(--wrap));
  margin-inline: auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--river-deep);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.04em;
}

.logo__mark {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff 0 18%, var(--mint) 19% 55%, var(--river) 56%);
  box-shadow: 0 0 0 4px rgba(126, 208, 197, 0.25);
  animation: pulse 3.6s ease-in-out infinite;
}

.logo__text {
  font-size: 0.95rem;
}

.fan-badge {
  margin: 0;
  margin-right: auto;
  padding: 0;
  border: 0;
  border-bottom: 1px solid rgba(11, 110, 122, 0.35);
  border-radius: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--river-deep);
  background: transparent;
}

.nav-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 1rem;
  height: 2px;
  background: var(--river-deep);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a[aria-current="true"] {
  color: var(--river-deep);
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: min(92vh, 54rem);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: #0b6e7a;
}

.hero__scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__scene ellipse {
  animation: shimmer 10s ease-in-out infinite;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(6, 78, 87, 0.42) 0%, rgba(6, 78, 87, 0.18) 46%, rgba(6, 78, 87, 0.28) 100%);
}

.hero__wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  width: 100%;
  height: clamp(7rem, 18vw, 12rem);
  fill: var(--foam);
}

.hero__content {
  width: min(100% - 2rem, var(--wrap));
  margin: 0 auto;
  padding: 7rem 0 6.5rem;
}

.hero__eyebrow {
  margin: 0 0 0.8rem;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  opacity: 0.9;
}

.hero__brand {
  margin: 0;
  display: grid;
  gap: 0.35rem;
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-wrap: balance;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

.hero__brand-jp {
  font-family: var(--font-body);
  font-size: clamp(2.8rem, 10vw, 5.6rem);
}

.hero__brand-en {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3.2vw, 1.7rem);
  letter-spacing: 0.18em;
  opacity: 0.9;
}

.hero__summary {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  max-width: 34rem;
  display: grid;
  gap: 0.28rem;
}

.hero__summary li {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.75rem;
  font-size: 0.9rem;
  line-height: 1.4;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero__summary span {
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.72);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.season-actions {
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.7rem 1.25rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

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

.btn--primary {
  background: var(--sun);
  color: var(--sun-ink);
}

.btn--primary:hover {
  color: var(--sun-ink);
  background: #ffb733;
}

.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.btn--ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.18);
}

.btn--ghost-dark {
  border: 1px solid var(--line);
  color: var(--river-deep);
  background: rgba(255, 255, 255, 0.7);
}

.btn--ghost-dark:hover {
  color: var(--river-deep);
  background: #fff;
}

.section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.section--tint {
  background:
    linear-gradient(180deg, rgba(201, 232, 240, 0.45), rgba(243, 251, 251, 0.2));
  border-block: 1px solid var(--line);
}

.section__label {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--river);
  font-weight: 700;
}

.section h2 {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.subhead {
  margin: 2rem 0 0;
  font-family: var(--font-body);
  font-size: 1.15rem;
  color: var(--river-deep);
}

.address-line {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.section__lead {
  margin: 1rem 0 0;
  max-width: 40rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.season-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 1.5rem;
  margin: 2rem 0 0;
}

.stat {
  margin: 0;
  padding: 1.1rem 0 1rem;
  border-top: 1px solid var(--line);
  background: transparent;
}

.stat__kicker {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.stat__value {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--river-deep);
}

.stat__value span {
  margin-inline: 0.15em;
  font-size: 0.55em;
  font-weight: 700;
}

.stat__value--sm {
  font-size: clamp(1.25rem, 2.8vw, 1.7rem);
  line-height: 1.25;
}

.stat__note {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.check-line,
.example-line,
.emphasis-line,
.note-text {
  margin: 1.25rem 0 0;
  color: var(--ink);
}

.emphasis-line {
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}

.note-text {
  color: var(--muted);
}

.feature-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.feature-list li {
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.feature-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.feature-list h3,
.access-blocks h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.35rem;
  color: var(--river-deep);
  font-weight: 700;
}

.feature-list p {
  margin: 0.55rem 0 0;
  max-width: 44rem;
  color: var(--muted);
}

.fee-table-wrap {
  margin-top: 1.75rem;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.fee-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 20rem;
}

.fee-table th,
.fee-table td {
  padding: 1rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.fee-table thead th {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
}

.fee-table tbody th {
  font-weight: 500;
}

.fee-table tbody td {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--river-deep);
}

.plain-list,
.tips-list,
.source-list,
.voices {
  margin: 1.5rem 0 0;
  padding: 0;
}

.plain-list {
  list-style: none;
}

.plain-list li {
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--line);
}

.access-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.access-blocks h3 {
  margin: 0;
  font-size: 1.35rem;
  color: var(--river-deep);
}

.access-blocks p {
  margin: 0.6rem 0 0;
  color: var(--muted);
}

.map-link {
  margin: 1.5rem 0 0;
}

.tips-list {
  list-style: none;
  counter-reset: tip;
  display: grid;
  gap: 1rem;
}

.tips-list li {
  counter-increment: tip;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1rem;
  align-items: start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.tips-list li::before {
  content: counter(tip, decimal-leading-zero);
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--sun);
  font-size: 1.2rem;
  line-height: 1.4;
}

.tips-list strong {
  grid-column: 2;
  font-size: 1.05rem;
}

.tips-list span {
  grid-column: 2;
  color: var(--muted);
}

.voices {
  list-style: none;
  display: grid;
  gap: 1rem;
}

.voices li {
  padding: 1rem 0 1.1rem;
  border-bottom: 1px solid var(--line);
}

.voices time {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--river);
  letter-spacing: 0.04em;
}

.voices p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.fineprint {
  margin: 1.25rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.source-list {
  list-style: none;
}

.source-list li {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
}

.site-footer {
  padding: 3rem 0 4rem;
  background: var(--river-deep);
  color: rgba(255, 255, 255, 0.9);
}

.site-footer a {
  color: #fff;
}

.site-footer__brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.site-footer p {
  margin: 0.75rem 0 0;
  max-width: 36rem;
}

.site-footer__meta {
  opacity: 0.75;
  font-size: 0.9rem;
}

.to-top {
  display: inline-block;
  margin-top: 1.25rem;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.12);
  }
}

@keyframes shimmer {
  0%,
  100% {
    opacity: 0.28;
    transform: translateX(0);
  }
  50% {
    opacity: 0.5;
    transform: translateX(12px);
  }
}


@media (max-width: 860px) {
  .season-grid,
  .access-blocks {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(var(--header-h) + 1px);
    left: 0;
    right: 0;
    padding: 1rem 1.25rem 1.25rem;
    background: rgba(243, 251, 251, 0.98);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0.85rem;
  }

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

  .fan-badge {
    font-size: 0.68rem;
  }
}

@media (max-width: 560px) {
  .hero__content {
    padding-top: 5.5rem;
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .tips-list li {
    grid-template-columns: 1fr;
  }

  .tips-list li::before {
    margin-bottom: 0.15rem;
  }

  .tips-list strong,
  .tips-list span {
    grid-column: 1;
  }
}

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

  .logo__mark,
  .hero__scene ellipse,
  .btn {
    animation: none;
    transition: none;
  }
}