:root {
  color-scheme: light;
  --paper: #f5f7f4;
  --surface: #ffffff;
  --surface-soft: #edf2ee;
  --ink: #15201d;
  --muted: #5e6965;
  --line: #d9e1dc;
  --accent: #14604f;
  --accent-strong: #0c473a;
  --accent-soft: #d9eee6;
  --warm: #c66e40;
  --dark: #152b25;
  --shadow: 0 22px 64px rgba(21, 43, 37, 0.1);
  --radius-lg: 28px;
  --radius-md: 18px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.85;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--warm);
  outline-offset: 4px;
  border-radius: 4px;
}

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

h1,
h2,
h3,
p,
ul,
ol {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.22;
}

p:last-child,
ul:last-child,
ol:last-child {
  margin-bottom: 0;
}

.skip-link {
  position: absolute;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--dark);
  color: #fff;
  transform: translateY(-180%);
}

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

.site-header {
  position: relative;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 247, 244, 0.94);
}

.header-inner,
.container {
  width: min(var(--max-width), calc(100% - 40px));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: -0.08em;
}

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

.nav-link {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  background: var(--surface);
  color: var(--ink);
}

.nav-link--contact {
  background: var(--ink);
  color: #fff;
}

.nav-link--contact:hover {
  background: var(--accent-strong);
  color: #fff;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(72px, 11vw, 144px) 0 clamp(76px, 11vw, 132px);
}

.hero::before {
  position: absolute;
  top: -180px;
  right: -130px;
  width: 500px;
  height: 500px;
  border: 1px solid rgba(20, 96, 79, 0.1);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero::after {
  position: absolute;
  top: -22px;
  right: 120px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(198, 110, 64, 0.14);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.78fr);
  align-items: end;
  gap: clamp(42px, 7vw, 108px);
}

.eyebrow,
.section-label,
.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow::before,
.section-label::before,
.page-kicker::before {
  display: inline-block;
  width: 18px;
  height: 1px;
  background: currentColor;
  content: "";
}

.hero h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(4.5rem, 14vw, 9.8rem);
  letter-spacing: -0.09em;
  line-height: 0.92;
}

.hero h1 span {
  color: var(--accent);
}

.hero-lede {
  max-width: 620px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.38rem);
  line-height: 1.75;
}

.hero-actions,
.button-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 750;
  line-height: 1.3;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

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

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

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

.button--secondary:hover {
  border-color: var(--accent);
  background: var(--surface);
  color: var(--accent);
}

.route-card {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  padding: 26px;
  border-radius: var(--radius-lg);
  background: var(--dark);
  box-shadow: var(--shadow);
  color: #fff;
}

.route-card::before {
  position: absolute;
  top: -120px;
  right: -100px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(217, 238, 230, 0.18);
  border-radius: 50%;
  content: "";
}

.route-card::after {
  position: absolute;
  right: 30px;
  bottom: -160px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(198, 110, 64, 0.35);
  border-radius: 50%;
  content: "";
}

.route-card-header,
.route-card-content {
  position: relative;
  z-index: 1;
}

.route-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.route-card-label {
  margin-bottom: 8px;
  color: #abd7c9;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.route-card h2 {
  margin-bottom: 0;
  color: #fff;
  font-size: 1.22rem;
  letter-spacing: -0.03em;
}

.route-index {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  color: #d9eee6;
  font-size: 0.78rem;
  font-weight: 800;
}

.route-map {
  position: relative;
  min-height: 248px;
  margin-top: 44px;
}

.route-line {
  position: absolute;
  top: 45px;
  right: 11%;
  left: 11%;
  height: 3px;
  background: linear-gradient(90deg, #90cdbb 0 32%, #e2a27e 32% 68%, #90cdbb 68%);
  transform: rotate(-12deg);
  transform-origin: center;
}

.route-line::after {
  position: absolute;
  top: -4px;
  right: 29%;
  width: 11px;
  height: 11px;
  border: 3px solid var(--dark);
  border-radius: 50%;
  background: #e2a27e;
  content: "";
}

.station {
  position: absolute;
  display: grid;
  gap: 7px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.78rem;
  line-height: 1.35;
}

.station::before {
  display: block;
  width: 16px;
  height: 16px;
  border: 4px solid #9fd5c5;
  border-radius: 50%;
  background: var(--dark);
  content: "";
}

.station--one {
  top: 17px;
  left: 3%;
}

.station--two {
  top: 64px;
  left: 44%;
}

.station--two::before {
  border-color: #e2a27e;
}

.station--three {
  top: 116px;
  right: 1%;
}

.route-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
}

.route-card-foot strong {
  color: #fff;
  font-size: 0.9rem;
}

.section {
  padding: clamp(76px, 10vw, 132px) 0;
}

.section--surface {
  background: var(--surface);
}

.section--dark {
  background: var(--dark);
  color: #e8f2ed;
}

.section--dark h2,
.section--dark h3 {
  color: #fff;
}

.section--dark .section-label {
  color: #a6d5c5;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
  align-items: end;
  gap: 36px;
  margin-bottom: 48px;
}

.section-head h2,
.page-hero h1 {
  margin-bottom: 0;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
}

.section-summary {
  max-width: 580px;
  margin-bottom: 0;
  color: var(--muted);
}

.section--dark .section-summary {
  color: #bbcbc4;
}

.section-copy {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.05rem;
}

.section-copy p + p {
  margin-top: 18px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.info-card {
  min-height: 244px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
}

.info-card-number {
  display: inline-flex;
  width: 31px;
  height: 31px;
  align-items: center;
  justify-content: center;
  margin-bottom: 35px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.75rem;
  font-weight: 800;
}

.info-card h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.info-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

.product-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(300px, 0.8fr);
  gap: clamp(34px, 7vw, 92px);
  align-items: center;
  padding: clamp(28px, 5vw, 62px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.product-panel h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.product-panel p {
  color: var(--muted);
}

.status-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0;
}

.status-card {
  padding: 15px 16px;
  border-radius: 14px;
  background: var(--surface-soft);
}

.status-card-label {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.76rem;
}

.status-card strong {
  display: block;
  color: var(--ink);
  font-size: 0.98rem;
}

.status-card--live strong {
  color: var(--accent);
}

.status-card--unavailable strong {
  color: var(--muted);
}

.product-visual {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--dark);
  color: #fff;
}

.product-visual::before {
  position: absolute;
  right: -80px;
  bottom: -140px;
  width: 310px;
  height: 310px;
  border: 1px solid rgba(217, 238, 230, 0.18);
  border-radius: 50%;
  content: "";
}

.product-visual-label {
  position: relative;
  z-index: 1;
  color: #abd7c9;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.product-visual-title {
  position: relative;
  z-index: 1;
  max-width: 250px;
  margin: 12px 0 32px;
  color: #fff;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 750;
  letter-spacing: -0.06em;
  line-height: 1.32;
}

.mini-route {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 26px;
}

.mini-route-line {
  width: 64px;
  height: 2px;
  background: #e2a27e;
}

.mini-station {
  width: 14px;
  height: 14px;
  border: 4px solid #9fd5c5;
  border-radius: 50%;
  background: var(--dark);
}

.mini-station--warm {
  border-color: #e2a27e;
}

.product-visual-note {
  position: relative;
  z-index: 1;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.82rem;
}

.contact-band {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

.contact-band h2 {
  max-width: 620px;
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3.6rem);
}

.contact-band p {
  max-width: 600px;
  margin-bottom: 0;
  color: var(--muted);
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--accent);
  font-weight: 750;
}

.email-link::after {
  content: "↗";
  font-size: 1.1em;
  line-height: 1;
}

.page-hero {
  padding: clamp(74px, 11vw, 140px) 0 72px;
  border-bottom: 1px solid var(--line);
}

.page-hero p {
  max-width: 650px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(190px, 0.32fr) minmax(0, 1fr);
  gap: clamp(36px, 8vw, 110px);
}

.content-aside {
  align-self: start;
  position: sticky;
  top: 28px;
}

.content-aside p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.content-aside strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 1.05rem;
}

.prose {
  max-width: 760px;
}

.prose h2 {
  margin: 0 0 18px;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.prose h2:not(:first-child) {
  margin-top: 56px;
}

.prose h3 {
  margin: 30px 0 10px;
  font-size: 1.1rem;
}

.prose p,
.prose li {
  color: var(--muted);
}

.prose ul,
.prose ol {
  padding-left: 1.35em;
}

.prose li + li {
  margin-top: 6px;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 46px;
}

.activity-card {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.activity-card h2 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.activity-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.note-panel {
  margin-top: 46px;
  padding: 24px 26px;
  border-left: 3px solid var(--accent);
  background: var(--surface-soft);
}

.note-panel p {
  margin-bottom: 0;
  color: var(--ink);
}

.product-detail {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.75fr);
  gap: clamp(36px, 8vw, 100px);
  align-items: start;
}

.product-detail h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4.5vw, 3.7rem);
}

.product-detail .lead {
  color: var(--muted);
  font-size: 1.08rem;
}

.product-meta {
  display: grid;
  gap: 10px;
  margin: 30px 0 32px;
}

.product-meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.product-meta-row span {
  color: var(--muted);
  font-size: 0.85rem;
}

.product-meta-row strong {
  color: var(--ink);
  font-size: 0.9rem;
  text-align: right;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  min-height: 94px;
  padding: 18px 18px 18px 45px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.feature-list li::before {
  position: absolute;
  top: 21px;
  left: 18px;
  width: 13px;
  height: 13px;
  border: 3px solid var(--accent);
  border-radius: 50%;
  content: "";
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(300px, 1fr);
  gap: clamp(30px, 7vw, 100px);
  align-items: center;
  padding: clamp(30px, 6vw, 72px);
  border-radius: var(--radius-lg);
  background: var(--dark);
  color: #e8f2ed;
  box-shadow: var(--shadow);
}

.contact-card h2 {
  margin-bottom: 14px;
  color: #fff;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
}

.contact-card p {
  margin-bottom: 0;
  color: #bbcbc4;
}

.contact-email-card {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
}

.contact-email-label {
  display: block;
  margin-bottom: 10px;
  color: #a6d5c5;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-email-card .email-link {
  color: #fff;
  font-size: clamp(1.05rem, 3vw, 1.5rem);
  overflow-wrap: anywhere;
}

.contact-email-card small {
  display: block;
  margin-top: 16px;
  color: #bbcbc4;
  font-size: 0.8rem;
}

.site-footer {
  padding: 34px 0 42px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.82rem;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.not-found {
  display: grid;
  min-height: min(720px, calc(100vh - 154px));
  place-items: center;
  padding: 80px 0;
  text-align: center;
}

.not-found-inner {
  max-width: 560px;
}

.not-found-code {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: clamp(4rem, 13vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.1em;
  line-height: 1;
}

.not-found h1 {
  margin-bottom: 14px;
  font-size: clamp(1.9rem, 4vw, 3rem);
}

.not-found p {
  margin-bottom: 28px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero-grid,
  .product-panel,
  .product-detail,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .route-card {
    min-height: 350px;
  }

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

  .section-head {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .content-aside {
    position: static;
  }

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

@media (max-width: 620px) {
  .header-inner,
  .container {
    width: min(var(--max-width), calc(100% - 28px));
  }

  .header-inner {
    min-height: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 17px 0 15px;
  }

  .site-nav {
    justify-content: flex-start;
    margin-left: -8px;
  }

  .nav-link {
    padding: 6px 8px;
    font-size: 0.82rem;
  }

  .nav-link--contact {
    padding-inline: 12px;
  }

  .hero {
    padding-top: 66px;
  }

  .hero h1 {
    font-size: clamp(4.3rem, 24vw, 7.5rem);
  }

  .hero-lede {
    font-size: 1.04rem;
  }

  .route-card {
    min-height: 326px;
    padding: 21px;
  }

  .route-map {
    min-height: 210px;
    margin-top: 34px;
  }

  .route-line {
    right: 7%;
    left: 7%;
  }

  .station {
    font-size: 0.71rem;
  }

  .card-grid,
  .activity-grid,
  .feature-list,
  .status-row {
    grid-template-columns: 1fr;
  }

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

  .info-card-number {
    margin-bottom: 22px;
  }

  .product-visual {
    min-height: 260px;
  }

  .product-meta-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .product-meta-row strong {
    text-align: left;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}