:root {
  color-scheme: light;
  --ink: #20322f;
  --muted: #5e6b67;
  --paper: #f7f4ed;
  --surface: #fffdf8;
  --surface-soft: #eef3ef;
  --line: #d8ded8;
  --teal: #1f6f67;
  --teal-dark: #164f4a;
  --coral: #c76f61;
  --sakura: #e5a2a7;
  --focus: #0b6fc2;
  --shadow: 0 18px 50px rgba(32, 50, 47, 0.11);
  --radius-lg: 28px;
  --radius-md: 18px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

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

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--ink);
  color: white;
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(32, 50, 47, 0.09);
  background: rgba(247, 244, 237, 0.96);
}

.header-inner {
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.25;
}

.brand-kicker {
  color: var(--teal);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.brand-name {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.primary-nav a {
  position: relative;
  padding: 8px 0;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.primary-nav a:not(.language-link)::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.language-link {
  min-width: 45px;
  padding: 7px 10px !important;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink) !important;
  text-align: center;
}

.menu-button {
  display: none;
  min-width: 72px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
}

.hero {
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 700px;
  margin: 32px auto 72px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: clamp(46px, 7vw, 96px);
}

.hero-copy {
  padding: 56px 0;
}

.eyebrow,
.section-label {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: clamp(3.15rem, 6.1vw, 5.85rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.hero-lead {
  max-width: 650px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(1.03rem, 1.6vw, 1.18rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.3;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

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

.button-primary {
  background: var(--teal);
  color: white;
  box-shadow: 0 10px 24px rgba(31, 111, 103, 0.23);
}

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

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.hero-facts {
  margin: 42px 0 0;
  padding: 26px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  list-style: none;
}

.hero-facts li {
  display: flex;
  flex-direction: column;
}

.hero-facts strong {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: 1.25rem;
  line-height: 1.3;
}

.hero-facts span {
  color: var(--muted);
  font-size: 0.75rem;
}

.hero-visual {
  position: relative;
  width: min(100%, 470px);
  margin: 0;
  justify-self: end;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 26px -20px -22px 24px;
  z-index: -1;
  border: 1px solid var(--sakura);
  border-radius: var(--radius-lg);
}

.hero-visual img {
  width: 100%;
  height: 600px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  object-position: 50% 45%;
  box-shadow: var(--shadow);
}

.hero-visual figcaption {
  position: absolute;
  right: 18px;
  bottom: 16px;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.9);
  color: var(--muted);
  font-size: 0.7rem;
}

.band {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  padding: 48px 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 72px;
  align-items: end;
}

.intro h2,
.section-heading h2,
.safety h2,
.contact h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: clamp(2.25rem, 4.6vw, 4.05rem);
  letter-spacing: -0.035em;
  line-height: 1.18;
}

.intro > p {
  margin: 0;
  color: var(--muted);
}

.section {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  padding: 128px 0;
}

.section-heading {
  max-width: 800px;
  margin-bottom: 60px;
}

.section-heading > p:last-child {
  max-width: 680px;
  margin: 22px 0 0;
  color: var(--muted);
}

.section-heading-row {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.55fr);
  gap: 64px;
  align-items: end;
}

.section-heading-row > p {
  margin: 0 0 6px !important;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.72fr);
  gap: clamp(48px, 8vw, 104px);
  align-items: start;
}

.prose {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.04rem;
}

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

.quote-card {
  padding: 34px;
  border-top: 5px solid var(--coral);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.quote-kicker {
  margin: 0 0 18px;
  color: var(--coral);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.quote {
  margin: 0 0 22px;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.55;
}

.quote-card p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.section-tinted {
  width: 100%;
  max-width: none;
  padding-right: max(20px, calc((100% - var(--max-width)) / 2));
  padding-left: max(20px, calc((100% - var(--max-width)) / 2));
  background: var(--surface-soft);
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.activity-card {
  min-height: 310px;
  padding: 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.activity-number {
  margin: 0 0 70px;
  color: var(--coral);
  font-family: Georgia, serif;
  font-weight: 700;
}

.activity-card h3 {
  margin: 0 0 14px;
  font-size: 1.23rem;
}

.activity-card p:last-child {
  margin: 0;
  color: var(--muted);
}

.notice {
  margin-top: 30px;
  padding: 28px 32px;
  border-radius: var(--radius-md);
  background: var(--ink);
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.notice p {
  margin: 0;
}

.notice-title {
  font-weight: 800;
}

.notice p:not(.notice-title) {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.86rem;
}

.steps {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  list-style: none;
}

.steps li {
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.step-number {
  width: 44px;
  height: 44px;
  margin-bottom: 54px;
  border-radius: 50%;
  background: var(--teal);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: Georgia, serif;
  font-weight: 700;
}

.steps h3 {
  margin: 0 0 10px;
  font-size: 1.17rem;
}

.steps p {
  margin: 0;
  color: var(--muted);
}

.faq {
  margin-top: 70px;
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  padding: 22px 42px 22px 0;
  font-weight: 800;
  cursor: pointer;
}

.faq p {
  max-width: 830px;
  margin: -4px 0 24px;
  color: var(--muted);
}

.safety {
  width: 100%;
  max-width: none;
  padding-right: max(20px, calc((100% - var(--max-width)) / 2));
  padding-left: max(20px, calc((100% - var(--max-width)) / 2));
  background: var(--teal-dark);
  color: white;
}

.section-label-light {
  color: #a6d7cf;
}

.safety-heading {
  max-width: 780px;
}

.safety-grid {
  margin-top: 68px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 38px;
}

.safety-grid > div {
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.safety-grid h3 {
  margin: 0 0 12px;
}

.safety-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
}

.safety-links {
  margin: 62px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.safety-links a {
  color: white;
  font-weight: 800;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1fr);
  gap: clamp(52px, 8vw, 110px);
}

.contact-copy > p:last-child {
  margin: 26px 0 0;
  color: var(--muted);
}

.contact-links {
  border-top: 1px solid var(--line);
}

.contact-links a {
  min-height: 82px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  text-decoration: none;
}

.contact-links a:hover strong {
  color: var(--teal);
}

.contact-links span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.contact-links strong {
  overflow-wrap: anywhere;
  text-align: right;
}

.site-footer {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  padding: 42px 0 58px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 40px;
  color: var(--muted);
  font-size: 0.78rem;
}

.site-footer p {
  margin: 0;
}

.footer-brand {
  color: var(--ink);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: 1.02rem;
  font-weight: 700;
}

.site-footer a {
  font-weight: 800;
}

@media (max-width: 980px) {
  .header-inner {
    min-height: 74px;
  }

  .menu-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .primary-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 20px;
    left: 20px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow);
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 2px;
  }

  .primary-nav[data-open="true"] {
    display: flex;
  }

  .primary-nav a {
    min-height: 44px;
    padding: 9px 10px;
  }

  .language-link {
    width: fit-content;
    margin-top: 6px;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-copy {
    padding-bottom: 10px;
  }

  .hero h1 {
    font-size: clamp(3.1rem, 10vw, 5.2rem);
  }

  .hero-visual {
    width: 100%;
    justify-self: stretch;
  }

  .hero-visual img {
    height: min(74vw, 640px);
    object-position: 50% 42%;
  }

  .intro,
  .section-heading-row,
  .about-grid,
  .contact {
    grid-template-columns: 1fr;
  }

  .intro,
  .section-heading-row {
    gap: 28px;
  }

  .activity-grid,
  .steps,
  .safety-grid {
    grid-template-columns: 1fr;
  }

  .activity-card {
    min-height: 0;
  }

  .activity-number,
  .step-number {
    margin-bottom: 26px;
  }

  .steps li {
    min-height: 0;
  }

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

  .contact {
    gap: 44px;
  }
}

@media (max-width: 620px) {
  html {
    scroll-padding-top: 78px;
  }

  body {
    font-size: 15px;
  }

  .header-inner,
  .hero,
  .band,
  .section:not(.section-tinted):not(.safety),
  .site-footer {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .brand-name {
    max-width: 220px;
    font-size: 0.92rem;
  }

  .brand-kicker {
    font-size: 0.56rem;
  }

  .menu-button {
    min-width: 66px;
  }

  .hero {
    margin-top: 12px;
    margin-bottom: 54px;
  }

  .hero-copy {
    padding-top: 34px;
  }

  .eyebrow {
    font-size: 0.65rem;
    line-height: 1.6;
  }

  .hero h1 {
    font-size: clamp(2.6rem, 13.5vw, 4.1rem);
  }

  .hero-lead {
    margin-top: 24px;
  }

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

  .button {
    width: 100%;
  }

  .hero-facts {
    gap: 10px;
  }

  .hero-facts strong {
    font-size: 1rem;
  }

  .hero-facts span {
    font-size: 0.63rem;
  }

  .hero-visual::before {
    inset: 14px -7px -12px 12px;
  }

  .hero-visual img {
    height: 108vw;
    max-height: 520px;
  }

  .band {
    padding: 34px 24px;
  }

  .section {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .intro h2,
  .section-heading h2,
  .safety h2,
  .contact h2 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .quote-card,
  .activity-card,
  .steps li {
    padding: 24px;
  }

  .notice {
    padding: 24px;
  }

  .safety-grid {
    gap: 28px;
  }

  .contact-links a {
    min-height: 74px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
  }

  .contact-links strong {
    text-align: left;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}