@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600&display=swap");

:root {
  --dark-blue: #001871;
  --light-blue: #00b0b9;
  --paper: #ffffff;
  --mist: #e5e8f1;
  --line: #cdd4e5;
  --text: #102047;
  --muted: #64708f;
  --shadow: 0 18px 60px rgba(0, 24, 113, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: "IBM Plex Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 28px;
  align-items: center;
  min-height: 84px;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
}

.brand img {
  width: 148px;
}

.site-header nav {
  display: flex;
  justify-content: flex-end;
  gap: clamp(14px, 2.4vw, 34px);
  color: var(--dark-blue);
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
}

.site-header .language-toggle {
  display: inline-flex;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--dark-blue);
  border-radius: 6px;
  font-size: 12px;
}

.site-header .language-toggle a {
  display: grid;
  min-width: 34px;
  min-height: 34px;
  place-items: center;
  padding: 6px 8px;
}

.site-header .language-toggle a + a {
  border-left: 1px solid var(--dark-blue);
}

.site-header .language-toggle .is-active {
  color: var(--paper);
  background: var(--dark-blue);
}

.site-header nav a:hover,
footer a:hover,
footer button:hover {
  color: var(--light-blue);
}

.nav-feature {
  padding-bottom: 4px;
  border-bottom: 2px solid var(--light-blue);
  font-weight: 500;
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid var(--dark-blue);
  border-radius: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
  text-align: center;
}

.header-action,
.button-secondary {
  color: var(--dark-blue);
  background: var(--paper);
}

.button-primary {
  color: var(--paper);
  background: var(--dark-blue);
}

.header-action:hover,
.button-secondary:hover {
  color: var(--paper);
  background: var(--dark-blue);
}

.button-primary:hover {
  color: var(--dark-blue);
  background: var(--paper);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  min-height: 690px;
  background: var(--dark-blue);
  color: var(--paper);
}

.hero-copy {
  align-self: center;
  padding: clamp(70px, 10vw, 130px) clamp(20px, 6vw, 84px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--light-blue);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(42px, 5.6vw, 76px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

h1 span {
  display: block;
  color: var(--light-blue);
}

h2 {
  margin-bottom: 20px;
  color: var(--dark-blue);
  font-size: clamp(30px, 4.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

h3 {
  color: var(--dark-blue);
  font-size: 22px;
  line-height: 1.2;
}

.hero-lead {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 20px;
}

.hero-promise {
  max-width: 640px;
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--light-blue);
  color: var(--paper);
  font-size: 18px;
  font-weight: 500;
}

.family-perspective {
  display: grid;
  grid-template-columns: minmax(150px, 0.28fr) minmax(0, 1.72fr);
  gap: clamp(22px, 5vw, 70px);
  align-items: center;
  padding: 34px clamp(20px, 6vw, 84px);
  border-bottom: 1px solid var(--line);
  background: #f8f9fc;
}

.family-perspective .eyebrow {
  margin: 0;
}

.family-perspective blockquote {
  max-width: 940px;
  margin: 0;
  color: var(--dark-blue);
  font-size: clamp(18px, 2.2vw, 27px);
  font-weight: 500;
  line-height: 1.35;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.concept-note {
  max-width: 650px;
  margin: 28px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--light-blue);
  color: rgba(255, 255, 255, 0.68);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

.hero-visual {
  min-height: 100%;
  margin: 0;
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.purpose-section,
.difference-section {
  padding: clamp(72px, 9vw, 124px) clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 900px;
  margin: 0 auto 44px;
}

.section-heading > p:last-child {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.purpose-grid,
.difference-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.purpose-grid article,
.difference-grid article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 10px 30px rgba(0, 24, 113, 0.06);
}

.purpose-grid span,
.difference-grid span {
  color: var(--light-blue);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

.purpose-grid h3,
.difference-grid h3 {
  margin: 24px 0 14px;
}

.purpose-grid p,
.difference-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.pilot-section {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  padding: clamp(72px, 9vw, 124px) clamp(20px, 5vw, 72px);
  background: var(--mist);
}

.pilot-copy {
  max-width: 760px;
}

.pilot-copy > p:not(.eyebrow) {
  max-width: 700px;
  color: var(--muted);
  font-size: 18px;
}

.pilot-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 30px;
}

.pilot-facts span {
  display: flex;
  min-height: 76px;
  flex-direction: column;
  justify-content: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--dark-blue);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

.pilot-facts strong {
  font-size: 22px;
  font-weight: 400;
}

.pilot-gate {
  padding: 34px;
  border-top: 5px solid var(--light-blue);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.pilot-gate p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.difference-section {
  background: #f8f9fc;
}

.concept-document {
  padding: clamp(64px, 8vw, 108px) clamp(20px, 5vw, 72px);
}

.concept-document--mist {
  background: var(--mist);
}

.concept-document--soft {
  background: #f8f9fc;
}

.concept-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(32px, 6vw, 84px);
  max-width: 1180px;
  margin: 0 auto;
}

.concept-layout > header {
  align-self: start;
}

.concept-layout > header h2 {
  font-size: clamp(30px, 3.7vw, 48px);
}

.concept-content {
  display: grid;
  gap: 18px;
}

.concept-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.concept-card h3 {
  margin-bottom: 12px;
}

.concept-card p:last-child,
.concept-card ul:last-child {
  margin-bottom: 0;
}

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

.concept-card ul {
  padding-left: 20px;
}

.model-grid,
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.model-grid article,
.criteria-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.model-grid span,
.criteria-grid span {
  color: var(--light-blue);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

.model-grid h3,
.criteria-grid h3 {
  margin: 18px 0 10px;
}

.model-grid p,
.criteria-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.commercial-note {
  padding: 28px;
  border-left: 5px solid var(--light-blue);
  background: var(--dark-blue);
  color: var(--paper);
}

.commercial-note h3 {
  color: var(--paper);
}

.commercial-note p:last-child {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
}

.route-hero {
  min-height: 610px;
  display: grid;
  align-items: center;
  padding: clamp(72px, 10vw, 130px) clamp(20px, 8vw, 120px);
  color: var(--paper);
  background:
    linear-gradient(90deg, rgba(0, 24, 113, 0.98) 0%, rgba(0, 24, 113, 0.9) 56%, rgba(0, 24, 113, 0.45) 100%),
    url("./assets/xx-travel-social.png") center / cover;
}

.route-hero > div {
  max-width: 850px;
}

.route-summary {
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
}

.itinerary-list {
  display: grid;
  gap: 14px;
}

.day-card {
  position: relative;
  padding: 24px 26px 24px 86px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.day-card > span {
  position: absolute;
  top: 27px;
  left: 20px;
  width: 52px;
  color: var(--light-blue);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
}

.day-card h3 {
  margin-bottom: 9px;
}

.day-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.day-card.bus-day {
  border-left: 4px solid var(--light-blue);
}

.day-card.relaxation-day {
  border-color: var(--light-blue);
  background: linear-gradient(135deg, #ffffff 0%, #eefafa 100%);
}

.day-card--with-image {
  overflow: hidden;
  padding-top: 24px;
}

.station-image {
  margin: 0 0 22px;
  overflow: hidden;
  border-radius: 6px;
  background: var(--mist);
}

.station-image img {
  width: 100%;
  height: clamp(210px, 28vw, 340px);
  object-fit: cover;
}

.station-image figcaption {
  padding: 10px 13px;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
}

.source-links a {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--dark-blue);
  background: var(--paper);
}

.source-links a:hover {
  border-color: var(--light-blue);
}

.route-gallery-section {
  padding: clamp(72px, 9vw, 112px) clamp(20px, 5vw, 72px);
  background: #f8f9fc;
}

.route-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.route-gallery figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 10px 30px rgba(0, 24, 113, 0.06);
}

.route-gallery img {
  width: 100%;
  height: clamp(230px, 30vw, 390px);
  object-fit: cover;
}

.route-gallery figcaption {
  display: grid;
  gap: 7px;
  padding: 18px 20px;
}

.route-gallery figcaption strong {
  color: var(--dark-blue);
  font-size: 18px;
}

.route-gallery figcaption span {
  color: var(--muted);
  font-size: 13px;
}

.route-gallery figcaption a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.responsibility-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(30px, 6vw, 80px);
  padding: clamp(72px, 9vw, 110px) clamp(20px, 5vw, 72px);
  color: var(--paper);
  background: var(--dark-blue);
}

.responsibility-section h2 {
  color: var(--paper);
}

.responsibility-section ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.responsibility-section li {
  padding: 18px 0 18px 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
}

.responsibility-section li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--light-blue);
}

.contact-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: center;
  padding: clamp(64px, 8vw, 100px) clamp(20px, 5vw, 72px);
  background: var(--mist);
}

.contact-band h2 {
  max-width: 800px;
}

.contact-band p:last-child {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

footer button {
  padding: 0;
  border: 0;
  color: inherit;
  background: none;
  font: inherit;
  cursor: pointer;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto auto;
  }

  .site-header nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
  }

  .site-header .language-toggle {
    grid-column: auto;
    grid-row: auto;
  }

  .hero,
  .pilot-section,
  .responsibility-section,
  .contact-band,
  .concept-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 440px;
  }

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

@media (max-width: 680px) {
  .site-header {
    position: relative;
  }

  .brand img {
    width: 128px;
  }

  .header-action {
    grid-column: 1 / -1;
  }

  .site-header nav {
    overflow-x: auto;
    white-space: nowrap;
  }

  h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .hero-visual {
    min-height: 320px;
  }

  .purpose-grid,
  .difference-grid,
  .model-grid,
  .criteria-grid,
  .pilot-facts,
  .route-gallery {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  footer {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .family-perspective {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .day-card {
    padding: 62px 20px 22px;
  }

  .day-card > span {
    top: 20px;
  }
}

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