:root {
  color-scheme: light;
  --bg: #fff0f2;
  --bg-soft: #fff8f9;
  --paper: #ffffff;
  --ink: #2a1515;
  --muted: #76585a;
  --line: rgba(211, 58, 44, 0.18);
  --red: #d33a2c;
  --red-dark: #8b2019;
  --gold: #ff9f43;
  --gold-soft: #ffe2b8;
  --shadow: 0 18px 60px rgba(139, 32, 25, 0.14);
  --radius: 8px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.72;
  background:
    linear-gradient(140deg, rgba(255, 240, 242, 0.94), rgba(250, 250, 250, 0.98) 58%, rgba(255, 248, 249, 0.96)),
    radial-gradient(circle at 88% 12%, rgba(255, 159, 67, 0.16), transparent 28%);
  text-rendering: optimizeLegibility;
}

::selection {
  color: #fff;
  background: var(--red);
}

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

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1em;
  height: 1em;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

p {
  margin: 0 0 1rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.24;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(2.2rem, 6.2vw, 4.4rem);
  font-weight: 900;
}

h2 {
  font-size: clamp(1.45rem, 2.35vw, 2rem);
}

h3 {
  font-size: 1.1rem;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--red);
  color: #fff;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 15;
  border-bottom: 1px solid rgba(211, 58, 44, 0.14);
  background: rgba(255, 248, 249, 0.92);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1240px, calc(100% - 28px));
  min-height: 76px;
  margin: 0 auto;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 900;
  color: var(--red-dark);
}

.brand img {
  width: 52px;
  height: 52px;
  border: 2px solid rgba(255, 159, 67, 0.58);
  border-radius: 50%;
  background: #fff;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(211, 58, 44, 0.18);
}

.brand span {
  white-space: nowrap;
}

.site-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-menu a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 9px 13px;
  color: #4e2829;
  font-size: 0.94rem;
  font-weight: 700;
  transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.site-menu a .icon {
  color: var(--red);
  font-size: 1rem;
}

.site-menu .nav-cta .icon {
  color: #6a2300;
}

.site-menu a:not(.nav-cta):hover,
.site-menu a:not(.nav-cta):focus-visible,
.site-menu a:not(.nav-cta).is-active {
  border-color: rgba(255, 159, 67, 0.82);
  color: var(--red-dark);
  box-shadow: 0 0 0 3px rgba(255, 159, 67, 0.12);
}

.site-menu a:not(.nav-cta):hover .icon,
.site-menu a:not(.nav-cta):focus-visible .icon,
.site-menu a:not(.nav-cta).is-active .icon {
  color: var(--gold);
}

.site-menu .nav-cta,
.btn-primary {
  color: #311010;
  background: linear-gradient(135deg, var(--gold), #ffd071);
  box-shadow: 0 12px 28px rgba(255, 159, 67, 0.32);
}

.site-menu .nav-cta:hover,
.site-menu .nav-cta:focus-visible,
.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(135deg, #ffb257, #ffe092);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  border-radius: 2px;
  background: var(--red-dark);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.section {
  padding: 86px 0;
}

.section-band {
  position: relative;
}

.hero {
  min-height: 720px;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: #5a1515;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 32%;
  background: linear-gradient(0deg, rgba(35, 6, 6, 0.86), transparent);
  pointer-events: none;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(60, 9, 9, 0.86) 0%, rgba(91, 16, 16, 0.58) 34%, rgba(80, 12, 12, 0.12) 68%),
    linear-gradient(180deg, rgba(29, 5, 5, 0.18), rgba(29, 5, 5, 0.72));
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  animation: hero-drift 18s ease-in-out infinite alternate;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 160px 0 56px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--gold);
  font-weight: 900;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 720px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.14rem;
}

.hero-actions,
.cta-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-actions {
  margin: 30px 0;
}

.btn,
.inline-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 900;
  line-height: 1;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.44);
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.18);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 12px;
  max-width: 820px;
  margin: 0;
}

.hero-facts div {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255, 255, 255, 0.11);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.hero-facts dt {
  color: rgba(255, 224, 146, 0.96);
  font-size: 0.82rem;
  font-weight: 800;
}

.hero-facts dd {
  margin: 4px 0 0;
  font-weight: 800;
}

.two-column,
.content-layout,
.feature-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.86fr);
  gap: 44px;
  align-items: center;
}

.two-column.reverse {
  grid-template-columns: minmax(340px, 0.9fr) minmax(0, 1fr);
}

.text-block {
  max-width: 720px;
}

.text-block p:last-child {
  margin-bottom: 0;
}

.image-panel,
.wide-image,
.gallery-preview {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(211, 58, 44, 0.15);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.image-panel img,
.wide-image img,
.gallery-preview img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.35s ease, filter 0.35s ease;
}

.image-panel figcaption,
.wide-image figcaption,
.gallery-preview figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.92);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.section-head p {
  max-width: 520px;
  margin-bottom: 0;
  color: var(--muted);
}

.gallery-section .section-head {
  display: block;
}

.gallery-section .section-head p:not(.section-kicker) {
  max-width: 760px;
  margin-top: 12px;
}

.fact-grid,
.guide-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.fact-grid article,
.guide-card,
.feature-grid article,
.timeline-list article,
.update-list article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 28px rgba(139, 32, 25, 0.08);
}

.fact-grid article,
.guide-card,
.feature-grid article {
  padding: 22px;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease, background 0.22s ease;
}

.fact-grid h3,
.guide-card h3,
.feature-grid h3,
.timeline-list h3,
.update-list h3 {
  color: var(--red-dark);
  margin-bottom: 10px;
}

.fact-grid p,
.guide-card p,
.feature-grid p,
.timeline-list p,
.update-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.content-section,
.features-section,
.faq-section {
  background: rgba(255, 255, 255, 0.42);
}

.content-layout,
.feature-layout {
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1fr);
  align-items: start;
}

.sticky-visual {
  position: sticky;
  top: 104px;
}

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

.timeline-list article {
  position: relative;
  padding: 22px 22px 22px 74px;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease, background 0.22s ease;
}

.timeline-list span {
  position: absolute;
  top: 22px;
  left: 22px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #fff;
  background: var(--red);
  font-weight: 900;
}

.route-steps {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding-left: 1.3rem;
}

.route-steps li {
  padding-left: 4px;
}

.inline-link {
  color: var(--red-dark);
  border: 1px solid rgba(211, 58, 44, 0.22);
  background: rgba(255, 255, 255, 0.78);
}

.guide-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.wide-image {
  margin-top: 28px;
}

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

.gallery-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.75fr);
  gap: 20px;
  align-items: stretch;
}

.gallery-preview {
  min-width: 0;
}

.gallery-preview figcaption {
  font-weight: 800;
  color: var(--red-dark);
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.gallery-thumb {
  display: grid;
  min-width: 0;
  overflow: hidden;
  border: 2px solid rgba(211, 58, 44, 0.13);
  border-radius: var(--radius);
  padding: 0;
  color: var(--red-dark);
  background: #fff;
  box-shadow: 0 8px 22px rgba(139, 32, 25, 0.08);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.gallery-thumb:hover,
.gallery-thumb:focus-visible,
.gallery-thumb.is-active {
  border-color: var(--gold);
  box-shadow: 0 12px 30px rgba(255, 159, 67, 0.22);
  transform: translateY(-1px);
}

.gallery-thumb img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.gallery-thumb span {
  display: block;
  min-height: 42px;
  padding: 9px 10px 10px;
  font-size: 0.92rem;
  font-weight: 900;
  line-height: 1.28;
  background: rgba(255, 255, 255, 0.94);
}

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

.update-list article {
  padding: 20px;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease, background 0.22s ease;
}

.update-list time {
  display: inline-flex;
  margin-bottom: 8px;
  color: var(--red);
  font-size: 0.88rem;
  font-weight: 900;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 26px rgba(139, 32, 25, 0.06);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease, background 0.22s ease;
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--red-dark);
  font-weight: 900;
  transition: color 0.18s ease;
}

.faq-list summary::marker {
  color: var(--gold);
}

.faq-list details p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--muted);
}

.final-cta {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(139, 32, 25, 0.96), rgba(211, 58, 44, 0.94)),
    linear-gradient(90deg, var(--red), var(--gold));
}

.cta-wrap {
  justify-content: space-between;
  padding: 58px 0;
}

.cta-wrap p {
  max-width: 620px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
}

.friend-links {
  padding: 42px 0 46px;
  border-top: 1px solid rgba(211, 58, 44, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 240, 242, 0.2), rgba(255, 240, 242, 0.92)),
    linear-gradient(90deg, rgba(255, 159, 67, 0.08), rgba(211, 58, 44, 0.08), rgba(255, 159, 67, 0.08));
}

.friend-links-wrap {
  text-align: center;
}

.friend-links h2 {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
}

.friend-link-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.friend-link-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  max-width: min(100%, 520px);
  border: 1px solid rgba(211, 58, 44, 0.14);
  border-radius: 999px;
  padding: 9px 22px;
  color: #2a1515;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 22px rgba(139, 32, 25, 0.08);
  font-weight: 900;
  line-height: 1.35;
}

.friend-link-list a .icon {
  color: var(--red);
  font-size: 1rem;
}

.friend-link-list a:hover,
.friend-link-list a:focus-visible {
  border-color: rgba(255, 159, 67, 0.7);
  background: #fff;
  box-shadow: 0 12px 28px rgba(255, 159, 67, 0.18);
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
}

.footer-wrap p {
  margin: 0;
}

.footer-wrap a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--red-dark);
  font-weight: 900;
}

:focus-visible {
  outline: 3px solid rgba(255, 159, 67, 0.74);
  outline-offset: 3px;
}

@keyframes hero-drift {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.035) translate3d(-10px, -6px, 0);
  }
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover,
  .inline-link:hover {
    box-shadow: 0 14px 34px rgba(255, 159, 67, 0.28), 0 0 0 3px rgba(255, 159, 67, 0.1);
  }

  .btn-secondary:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 159, 67, 0.58);
  }

  .hero-facts div:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 159, 67, 0.58);
    background: rgba(255, 255, 255, 0.17);
  }

  .image-panel:hover,
  .wide-image:hover,
  .gallery-preview:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 159, 67, 0.52);
    box-shadow: 0 22px 70px rgba(139, 32, 25, 0.18);
  }

  .image-panel:hover img,
  .wide-image:hover img,
  .gallery-preview:hover img {
    transform: scale(1.035);
    filter: saturate(1.06) contrast(1.02);
  }

  .fact-grid article:hover,
  .guide-card:hover,
  .feature-grid article:hover,
  .timeline-list article:hover,
  .update-list article:hover,
  .faq-list details:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 159, 67, 0.52);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 18px 42px rgba(139, 32, 25, 0.12);
  }

  .timeline-list article:hover span {
    background: linear-gradient(135deg, var(--red), var(--gold));
    box-shadow: 0 8px 20px rgba(255, 159, 67, 0.28);
  }

  .faq-list details:hover summary,
  .faq-list details[open] summary {
    color: var(--red);
  }
}

@media (max-width: 980px) {
  .menu-toggle {
    display: block;
  }

  .site-menu {
    position: absolute;
    top: 76px;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow);
  }

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

  .site-menu a {
    border-radius: var(--radius);
  }

  .hero {
    min-height: 660px;
  }

  .hero-media img {
    object-position: 62% center;
  }

  .hero-facts,
  .fact-grid,
  .guide-grid,
  .update-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .two-column,
  .two-column.reverse,
  .content-layout,
  .feature-layout {
    grid-template-columns: 1fr;
  }

  .sticky-visual {
    position: static;
  }

  .section-head {
    display: block;
  }

  .section-head p,
  .section-head .inline-link {
    margin-top: 14px;
  }

  .gallery-showcase {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .nav-wrap {
    min-height: 68px;
  }

  .brand span {
    max-width: 9em;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .brand img {
    width: 46px;
    height: 46px;
  }

  .site-menu {
    top: 68px;
  }

  .section {
    padding: 58px 0;
  }

  .hero {
    min-height: 650px;
  }

  .hero-content {
    padding: 130px 0 38px;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-facts,
  .fact-grid,
  .guide-grid,
  .feature-grid,
  .update-list {
    grid-template-columns: 1fr;
  }

  .hero-facts div,
  .fact-grid article,
  .guide-card,
  .feature-grid article,
  .timeline-list article,
  .update-list article {
    padding: 18px;
  }

  .timeline-list article {
    padding-left: 66px;
  }

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

  .cta-wrap,
  .footer-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .friend-links {
    padding: 34px 0 38px;
  }

  .friend-link-list {
    align-items: stretch;
    flex-direction: column;
  }

  .friend-link-list a {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}