:root {
  --bg: #f7f7f4;
  --surface: #ffffff;
  --ink: #181614;
  --muted: #68615b;
  --line: #e3dfd9;
  --red: #c91521;
  --red-dark: #9d1019;
  --green: #0c6b4f;
  --sand: #efe8de;
  --shadow: 0 24px 70px rgba(24, 22, 20, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family:
    Inter, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 14px clamp(20px, 5vw, 76px);
  background: rgba(247, 247, 244, 0.88);
  border-bottom: 1px solid rgba(227, 223, 217, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 260px;
}

.brand img {
  width: 54px;
  height: 42px;
  object-fit: contain;
}

.brand span {
  display: grid;
  gap: 2px;
}

.brand strong {
  font-size: 16px;
  line-height: 1.15;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-cta {
  padding: 10px 14px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
}

.lang-toggle,
.menu-toggle {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}

.lang-toggle {
  min-width: 48px;
  height: 38px;
  font-weight: 800;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(380px, 1.05fr);
  gap: clamp(36px, 6vw, 86px);
  align-items: center;
  min-height: 720px;
  padding: 84px clamp(20px, 5vw, 76px) 96px;
}

.home-portal {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.9fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: center;
  min-height: calc(100vh - 260px);
  padding: 34px clamp(20px, 5vw, 76px) 26px;
}

.home-image {
  position: relative;
}

.home-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.home-entry {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.featured-route {
  padding: 0 clamp(20px, 5vw, 76px) 22px;
  background: var(--bg);
}

.featured-route a {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  box-shadow: var(--shadow);
}

.featured-route img {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  object-fit: cover;
}

.featured-route span {
  display: grid;
  gap: 6px;
}

.featured-route small {
  color: #ffb8b8;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.featured-route strong {
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.15;
}

.featured-route em {
  color: rgba(255, 255, 255, 0.74);
  font-style: normal;
}

.home-entry a {
  display: grid;
  align-content: space-between;
  min-height: 116px;
  padding: 16px 18px;
  border-right: 1px solid var(--line);
  color: inherit;
}

.home-entry a:last-child {
  border-right: 0;
}

.home-entry a:hover {
  background: #fbfbf9;
}

.home-entry span {
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.home-entry strong {
  font-size: 16px;
  line-height: 1.35;
}

.eyebrow,
.section-label {
  margin: 0 0 16px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

p {
  line-height: 1.75;
}

.is-bilingual {
  display: inline-grid;
  gap: 3px;
}

.bilingual-zh,
.bilingual-en {
  display: block;
}

.bilingual-en {
  color: var(--muted);
  font-size: 0.86em;
  font-weight: 500;
  line-height: 1.45;
}

.button .bilingual-en,
.nav-cta .bilingual-en,
.lang-toggle .bilingual-en {
  color: inherit;
}

h1 .bilingual-en,
h2 .bilingual-en,
h3 .bilingual-en {
  margin-top: 4px;
  font-weight: 500;
}

.section-label .bilingual-en,
.eyebrow .bilingual-en,
.home-entry span .bilingual-en,
.featured-route small .bilingual-en {
  color: inherit;
  font-size: 0.82em;
  letter-spacing: 0.04em;
}

.nav-links .is-bilingual {
  gap: 1px;
}

.nav-links .bilingual-en {
  font-size: 0.78em;
}

.hero-copy {
  width: min(680px, 100%);
  margin-bottom: 32px;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions,
.button {
  display: inline-flex;
  align-items: center;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  min-height: 48px;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  cursor: pointer;
}

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

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

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

.button.secondary:hover {
  border-color: var(--ink);
}

.hero-visual {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.8fr;
  grid-template-rows: 1fr 1fr;
  gap: 14px;
  min-height: 540px;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.hero-visual .visual-main {
  grid-row: 1 / 3;
}

.visual-note {
  position: absolute;
  right: 28px;
  bottom: 28px;
  display: grid;
  gap: 4px;
  width: min(260px, 70%);
  padding: 18px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 48px rgba(24, 22, 20, 0.15);
}

.visual-note strong {
  font-size: 26px;
}

.visual-note span {
  color: var(--muted);
  font-size: 14px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.trust-strip div {
  padding: 28px clamp(18px, 4vw, 44px);
  border-right: 1px solid var(--line);
}

.trust-strip div:last-child {
  border-right: 0;
}

.trust-strip strong {
  display: block;
  margin-bottom: 6px;
  font-size: 28px;
}

.trust-strip span {
  color: var(--muted);
}

.section {
  padding: 96px clamp(20px, 5vw, 76px);
}

.intro,
.contact,
.experience {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 6vw, 86px);
  align-items: center;
}

.intro {
  background: var(--ink);
  color: #ffffff;
}

.intro .section-label {
  color: #ffb8b8;
}

.intro p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
}

.section-heading {
  width: min(860px, 100%);
  margin-bottom: 40px;
}

.section-heading.compact {
  width: min(680px, 100%);
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.program-card {
  color: inherit;
  min-height: 280px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.program-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.program-card.featured {
  background: var(--red);
  color: #ffffff;
}

.program-card span {
  display: inline-block;
  margin-bottom: 44px;
  color: var(--red);
  font-weight: 900;
}

.program-card.featured span,
.program-card.featured p {
  color: rgba(255, 255, 255, 0.82);
}

.program-card p {
  color: var(--muted);
}

.why {
  background: #ffffff;
}

.why-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: stretch;
}

.why-layout img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  border-radius: 8px;
  object-fit: cover;
}

.why-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.why-list div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.why-list strong {
  font-size: 19px;
}

.why-list span,
.experience-copy p,
.contact-copy p {
  color: var(--muted);
  line-height: 1.75;
}

.experience {
  background: var(--sand);
}

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

.photo-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

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

.brand-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.brand-grid article {
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: 240px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfbf9;
  text-align: center;
}

.brand-grid img {
  width: 100%;
  height: 118px;
  object-fit: contain;
  filter: saturate(0.92);
}

.brand-grid h3 {
  margin: 18px 0 0;
}

.contact {
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 15px;
  color: var(--ink);
  background: #fbfbf9;
  font: inherit;
}

input:focus,
textarea:focus {
  outline: 3px solid rgba(201, 21, 33, 0.14);
  border-color: var(--red);
}

textarea {
  resize: vertical;
}

.form-note {
  min-height: 24px;
  margin: 0;
  color: var(--green);
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 18px clamp(20px, 5vw, 76px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.8fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: end;
  padding: 82px clamp(20px, 5vw, 76px);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.page-hero p {
  color: var(--muted);
  font-size: 18px;
}

.page-hero img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.breadcrumb {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--ink);
}

.detail-grid,
.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.detail-card,
.text-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.detail-card p,
.text-panel p {
  color: var(--muted);
}

.stack-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stack-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.page-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 42px;
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
}

.page-cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.link-card {
  display: grid;
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: inherit;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.link-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.link-card span {
  align-self: end;
  color: var(--red);
  font-weight: 900;
}

.timeline {
  display: grid;
  border-top: 1px solid var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-item strong {
  font-size: 22px;
}

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

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

.gallery-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

.itinerary-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.itinerary-summary article {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.itinerary-summary img {
  width: 100%;
  aspect-ratio: 16 / 10;
  margin-bottom: 18px;
  border-radius: 8px;
  object-fit: cover;
}

.day-list {
  display: grid;
  gap: 16px;
}

.day-card {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.day-card strong {
  color: var(--red);
  font-size: 22px;
}

.day-card h3 {
  margin-bottom: 8px;
}

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

.day-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .hero,
  .home-portal,
  .page-hero,
  .intro,
  .contact,
  .experience,
  .why-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 460px;
  }

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

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

  .featured-route a {
    grid-template-columns: 1fr;
  }

  .detail-grid,
  .two-column,
  .page-cta,
  .link-grid,
  .gallery-grid,
  .itinerary-summary,
  .day-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .nav-links a,
  .lang-toggle {
    width: 100%;
    min-height: 44px;
    text-align: left;
  }

  .nav-links a {
    padding: 14px;
  }

  .nav-cta {
    border: 0;
  }

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

  .trust-strip div {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand img {
    width: 44px;
    height: 36px;
  }

  .brand strong {
    font-size: 14px;
  }

  .hero,
  .section {
    padding: 62px 18px;
  }

  h1 {
    font-size: 34px;
  }

  .button,
  .home-entry,
  .program-grid,
  .trust-strip,
  .brand-grid,
  .photo-grid {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .hero-visual {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .home-portal {
    min-height: auto;
  }

  .hero-visual .visual-main {
    grid-row: auto;
  }

  .hero-visual img {
    aspect-ratio: 4 / 3;
  }

  .visual-note {
    position: static;
    width: 100%;
    margin-top: 4px;
  }

  .why-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .site-footer {
    flex-direction: column;
  }
}