:root {
  --bg: #ffffff;
  --ink: #0f172a;
  --muted: #5c667a;
  --soft: #f5f7fb;
  --line: #e5e9f1;
  --red: #ff3366;
  --red-dark: #d91f4f;
  --red-soft: #fff0f4;
  --blue: #0f172a;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
  --radius: 8px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

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

p {
  margin: 0;
}

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

.nav-icon,
.btn-icon {
  width: 1.08em;
  height: 1.08em;
  flex: 0 0 auto;
  fill: currentColor;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  border-radius: 6px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(229, 233, 241, 0.8);
  backdrop-filter: blur(16px);
}

.nav-shell {
  width: min(var(--max), calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  color: var(--ink);
  letter-spacing: 0;
}

.brand img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(255, 51, 102, 0.24);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: #253047;
}

.site-nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--red);
  background: var(--red-soft);
  border-color: rgba(255, 51, 102, 0.58);
  box-shadow: 0 0 0 3px rgba(255, 51, 102, 0.08);
}

.site-nav .nav-cta {
  margin-left: 6px;
  color: #fff;
  background: var(--ink);
  border-radius: 999px;
  border-color: transparent;
}

.site-nav .nav-cta:hover {
  color: #fff;
  background: var(--red);
  border-color: transparent;
  box-shadow: 0 14px 34px rgba(255, 51, 102, 0.28);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span:not(.sr-only) {
  width: 18px;
  height: 2px;
  background: var(--ink);
  transform-origin: center;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.nav-toggle.is-open span:not(.sr-only):nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:not(.sr-only):nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:not(.sr-only):nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 82svh;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: 128px 0 54px;
  isolation: isolate;
}

.hero-media,
.hero-media img,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  z-index: -2;
}

.hero-media img {
  object-fit: cover;
}

.hero-overlay {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(15, 23, 42, 0.86) 0%, rgba(15, 23, 42, 0.62) 46%, rgba(255, 51, 102, 0.26) 100%),
    linear-gradient(0deg, rgba(15, 23, 42, 0.86) 0%, rgba(15, 23, 42, 0.04) 56%);
}

.hero-content {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  color: #fff;
}

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

.hero .eyebrow {
  color: #ffd3de;
}

.hero h1 {
  margin: 10px 0 14px;
  color: var(--red);
  font-size: clamp(40px, 6vw, 76px);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-lede {
  width: min(680px, 100%);
  color: rgba(255, 255, 255, 0.9);
  font-size: 20px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  color: #fff;
  background: var(--red);
  box-shadow: 0 18px 40px rgba(255, 51, 102, 0.36);
}

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

.btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.48);
  background: rgba(255, 255, 255, 0.08);
}

.btn-dark {
  color: #fff;
  background: var(--ink);
}

.hero-stats {
  width: min(760px, 100%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 34px 0 0;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-stats div {
  padding: 16px;
  background: rgba(15, 23, 42, 0.46);
}

.hero-stats dt {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.hero-stats dd {
  margin: 4px 0 0;
  font-size: 20px;
  font-weight: 900;
}

.section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 84px 0;
}

.section-head {
  width: min(820px, 100%);
  margin-bottom: 32px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head.compact {
  width: min(760px, 100%);
}

.section h2,
.final-cta h2 {
  margin: 8px 0 14px;
  color: var(--red);
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.15;
  letter-spacing: 0;
}

.section h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: 0;
}

.section-head p:not(.section-kicker),
.text-panel p,
.content-cards p,
.steps p,
.route-list,
.feature-grid p,
.timeline p,
.faq-list p,
.final-cta p {
  color: var(--muted);
}

.intro-grid,
.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.74fr);
  gap: 28px;
  align-items: stretch;
}

.guide-grid {
  grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1fr);
}

.text-panel {
  padding: 34px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.text-panel p + p {
  margin-top: 16px;
}

.image-card {
  margin: 0;
  background: var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.image-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.image-card.tall img {
  height: 100%;
  min-height: 520px;
}

figcaption {
  padding: 12px 14px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}

.content-section {
  width: 100%;
  max-width: none;
  padding: 84px max(16px, calc((100% - var(--max)) / 2));
  background: linear-gradient(180deg, #fff 0%, #fff6f8 100%);
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
}

.feature-story {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.feature-story img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.feature-story div {
  padding: 26px;
}

.content-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.content-cards article,
.steps article,
.feature-grid article,
.timeline article,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.content-cards article {
  min-height: 190px;
  padding: 24px;
}

.icon-dot {
  width: 28px;
  height: 28px;
  display: inline-block;
  margin-bottom: 18px;
  border-radius: 50%;
  background:
    linear-gradient(135deg, #fff 0 28%, transparent 29%),
    var(--red);
  box-shadow: 0 10px 26px rgba(255, 51, 102, 0.28);
}

.steps {
  display: grid;
  gap: 14px;
}

.steps article {
  display: grid;
  grid-template-columns: 64px 1fr;
  column-gap: 16px;
  padding: 22px;
}

.steps span {
  grid-row: span 2;
  color: var(--red);
  font-size: 24px;
  font-weight: 900;
}

.route-section {
  width: 100%;
  max-width: none;
  padding: 0;
  background: var(--red);
}

.route-band {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 40px;
  align-items: center;
  color: #fff;
}

.route-band .section-kicker,
.route-band h2,
.route-band p,
.route-list {
  color: #fff;
}

.route-band p,
.route-list {
  color: rgba(255, 255, 255, 0.86);
}

.route-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  list-style: none;
}

.route-list li {
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.12);
}

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

.feature-grid article {
  overflow: hidden;
}

.feature-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.feature-grid h3,
.feature-grid p {
  padding-left: 20px;
  padding-right: 20px;
}

.feature-grid h3 {
  margin-top: 20px;
}

.feature-grid p {
  padding-bottom: 24px;
}

.gallery-section {
  width: 100%;
  max-width: none;
  padding: 84px max(16px, calc((100% - var(--max)) / 2));
  background: var(--ink);
}

.gallery-section .section-kicker,
.gallery-section h2 {
  color: #fff;
}

.gallery-viewer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.34fr);
  gap: 18px;
  align-items: stretch;
}

.gallery-main {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.28);
}

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

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

.gallery-thumb {
  position: relative;
  display: block;
  padding: 0;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.08);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.gallery-thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  opacity: 0.78;
}

.gallery-thumb:hover,
.gallery-thumb.is-active {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 18px 40px rgba(255, 51, 102, 0.2);
}

.gallery-thumb:hover img,
.gallery-thumb.is-active img {
  opacity: 1;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.timeline article {
  padding: 22px;
}

.timeline time {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
}

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

.faq-list details {
  padding: 0 20px;
}

.image-card,
.feature-story,
.gallery-main,
.gallery-thumb,
.content-cards article,
.steps article,
.feature-grid article,
.timeline article,
.faq-list details,
.route-list li {
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.image-card::after,
.feature-story::after,
.gallery-main::after,
.gallery-thumb::after,
.content-cards article::after,
.steps article::after,
.feature-grid article::after,
.timeline article::after,
.faq-list details::after,
.route-list li::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: rgba(255, 51, 102, 0.07);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.image-card:hover,
.feature-story:hover,
.gallery-main:hover,
.gallery-thumb:hover,
.content-cards article:hover,
.steps article:hover,
.feature-grid article:hover,
.timeline article:hover,
.faq-list details:hover,
.route-list li:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 51, 102, 0.28);
  box-shadow: 0 22px 52px rgba(255, 51, 102, 0.11), 0 10px 28px rgba(15, 23, 42, 0.1);
}

.image-card:hover::after,
.feature-story:hover::after,
.gallery-main:hover::after,
.gallery-thumb:hover::after,
.content-cards article:hover::after,
.steps article:hover::after,
.feature-grid article:hover::after,
.timeline article:hover::after,
.faq-list details:hover::after,
.route-list li:hover::after {
  opacity: 1;
}

.image-card > *,
.feature-story > *,
.gallery-main > *,
.gallery-thumb > *,
.content-cards article > *,
.steps article > *,
.feature-grid article > *,
.timeline article > *,
.faq-list details > *,
.route-list li > * {
  position: relative;
  z-index: 1;
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 0;
  font-weight: 900;
}

.faq-list p {
  padding-bottom: 18px;
}

.final-cta {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto 84px;
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-radius: var(--radius);
  background: var(--red-soft);
  border: 1px solid #ffd0dd;
}

.final-cta h2 {
  font-size: clamp(26px, 3.2vw, 40px);
}

.friend-links {
  margin-top: 0;
  padding: 54px 16px 58px;
  text-align: center;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.28), transparent 34%),
    linear-gradient(135deg, rgba(255, 51, 102, 0.92), var(--red));
}

.friend-links h2 {
  margin: 0 0 18px;
  color: #fff;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.2;
  letter-spacing: 0;
}

.friend-link-list {
  width: min(720px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.friend-link-list a {
  min-width: 118px;
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 999px;
  font-weight: 900;
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.12);
  transition: transform 0.22s ease, box-shadow 0.22s ease, color 0.22s ease, background 0.22s ease;
}

.friend-link-list a:hover {
  color: var(--red);
  background: #fff;
  transform: translateY(-4px);
  box-shadow: 0 22px 46px rgba(15, 23, 42, 0.18);
}

.site-footer {
  min-height: 96px;
  padding: 28px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.76);
  background: var(--ink);
  font-size: 14px;
}

.site-footer a {
  color: #fff;
  font-weight: 900;
}

.site-header.is-scrolled {
  box-shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
}

.site-nav a {
  position: relative;
  overflow: hidden;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 51, 102, 0.18);
  transform: translate(-50%, -50%) scale(0);
  transform-origin: center;
  opacity: 0;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
}

.site-nav .nav-cta:hover::after {
  transform: translate(-50%, -50%) scale(11);
  opacity: 1;
}

.hero-media img {
  transform: scale(1.02);
  transition: transform 4s ease;
}

.hero:hover .hero-media img {
  transform: scale(1.07);
}

.section-head::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin: 18px auto 0;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--red), transparent);
}

.btn {
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  transform: translate(-50%, -50%) scale(0);
  background: rgba(255, 255, 255, 0.28);
  transition: transform 0.34s ease, opacity 0.34s ease;
  opacity: 0;
}

.btn:hover::before {
  transform: translate(-50%, -50%) scale(18);
  opacity: 1;
}

.btn:not(.btn-primary):not(.btn-dark) {
  border-color: rgba(255, 255, 255, 0.48);
  transition: transform 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:not(.btn-primary):not(.btn-dark)::before {
  display: none;
}

.btn:not(.btn-primary):not(.btn-dark):hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.14);
}

.btn > * {
  position: relative;
  z-index: 1;
}

.image-card img,
.feature-story img,
.feature-grid img,
.gallery-main img,
.gallery-thumb img {
  transition: transform 0.45s ease, filter 0.45s ease;
}

.image-card:hover img,
.feature-story:hover img,
.feature-grid article:hover img,
.gallery-main:hover img,
.gallery-thumb:hover img {
  transform: scale(1.045);
  filter: saturate(1.08) contrast(1.04);
}

.hero-stats div {
  transition: background 0.22s ease, transform 0.22s ease;
}

.hero-stats div:hover {
  transform: translateY(-3px);
  background: rgba(255, 51, 102, 0.28);
}

.icon-dot {
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.content-cards article:hover .icon-dot {
  transform: rotate(12deg) scale(1.08);
  box-shadow: 0 14px 34px rgba(255, 51, 102, 0.36);
}

.steps span,
.timeline time {
  transition: transform 0.22s ease, color 0.22s ease;
}

.steps article:hover span,
.timeline article:hover time {
  transform: translateX(3px);
}

.faq-list summary {
  transition: color 0.2s ease;
}

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

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 78px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    justify-content: flex-start;
  }

  .site-nav .nav-cta {
    margin-left: 0;
    justify-content: center;
  }

  .intro-grid,
  .guide-grid,
  .content-layout,
  .route-band,
  .feature-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .image-card.tall img {
    min-height: 0;
  }

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

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

@media (max-width: 640px) {
  .nav-shell {
    min-height: 64px;
  }

  .hero {
    min-height: 84svh;
    padding-top: 104px;
  }

  .hero-lede {
    font-size: 16px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 58px 0;
  }

  .content-section,
  .gallery-section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .text-panel,
  .feature-story div,
  .final-cta {
    padding: 22px;
  }

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

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

  .steps article {
    grid-template-columns: 46px 1fr;
  }

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

  .btn {
    width: 100%;
  }
}

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