:root {
  --ink: #11253c;
  --muted: #3e5268;
  --blue: #2465eb;
  --blue-dark: #1549b1;
  --ice: #edf3fc;
  --paper: #fff;
  --soft: #f5f7fa;
  --green: #167557;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --gutter: clamp(22px, 4.6vw, 80px);
  font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}
body {
  margin: 0;
}
button,
input,
select {
  font: inherit;
}
button,
a,
select,
input[type='range'],
summary {
  -webkit-tap-highlight-color: transparent;
}
button,
select,
summary {
  cursor: pointer;
}
button {
  color: inherit;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  border: 0;
  background: transparent;
}
img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}
button,
a,
select,
summary {
  touch-action: manipulation;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex='0']:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
::selection {
  color: var(--paper);
  background: var(--blue);
}
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  text-wrap: balance;
}
p {
  text-wrap: pretty;
  line-height: 1.65;
}
h1 {
  font-size: clamp(46px, 5.65vw, 88px);
  font-weight: 500;
  letter-spacing: -0.067em;
  line-height: 1.04;
}
h2 {
  font-size: clamp(36px, 4.4vw, 66px);
  font-weight: 500;
  letter-spacing: -0.052em;
  line-height: 1.08;
}
h3 {
  font-size: 23px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.25;
}
.icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-library {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link {
  position: absolute;
  z-index: 20;
  left: 20px;
  top: -90px;
  padding: 16px;
  background: white;
}
.skip-link:focus {
  top: 12px;
}
.page-pad {
  padding-inline: var(--gutter);
}
.section-space {
  padding-block: clamp(80px, 8.5vw, 136px);
}
.button {
  min-height: 56px;
  padding: 17px 25px;
  border-radius: 6px;
  background: var(--blue);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.25;
  transition:
    background 180ms,
    transform 220ms var(--ease);
}
.button:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}
.button:active {
  transform: translateY(1px) scale(0.98);
}
.button-small {
  min-height: 46px;
  padding: 13px 20px;
  font-size: 14px;
}
.button-white {
  background: white;
  color: var(--blue-dark);
}
.button-white:hover {
  background: var(--ice);
}
.text-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  font-weight: 500;
  padding: 4px 0;
}
.text-link .icon,
.button .icon {
  transition: transform 240ms var(--ease);
}
.text-link:hover .icon,
.button:hover .icon {
  transform: translate(3px, -1px);
}
.text-link:hover {
  color: var(--blue);
}
.icon-button {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition:
    background 180ms,
    transform 180ms;
}
.icon-button:hover {
  background: #dce7f8;
}
.icon-button:active {
  transform: scale(0.93);
}

.site-header {
  padding: 27px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: var(--ice);
  position: relative;
  z-index: 5;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 30px;
  font-weight: 650;
  letter-spacing: -1.4px;
  line-height: 1;
}
.brand-mark {
  width: 42px;
  height: 38px;
  color: var(--blue);
}
.brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15px;
  margin-top: 6px;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}
.desktop-nav a {
  padding: 12px 0;
  font-size: 14px;
  transition: color 180ms;
}
.desktop-nav a:hover {
  color: var(--blue);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 23px;
}
.language-control {
  display: flex;
  align-items: center;
  gap: 4px;
}
.language-control .icon {
  width: 19px;
}
.language-control select {
  border: 0;
  color: var(--ink);
  background: transparent;
  min-height: 44px;
  font-size: 14px;
  padding: 0 6px;
}
.menu-button,
.mobile-nav {
  display: none;
}

.hero {
  background: var(--ice);
  position: relative;
  display: grid;
  grid-template-columns: 53% 47%;
  padding-top: 72px;
  min-height: 770px;
  overflow: clip;
}
.hero-copy {
  position: relative;
  z-index: 2;
  pointer-events: none;
  padding-bottom: 112px;
}
.hero-copy > * {
  pointer-events: auto;
}
.hero h1 {
  white-space: pre-line;
  max-width: 780px;
  padding-bottom: 4px;
}
.hero-description {
  max-width: 420px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--muted);
  margin-top: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 26px;
  margin-top: 34px;
}
.hero-product {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-top: 52px;
  font-size: 13px;
  color: var(--muted);
}
.mini-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: white;
  color: var(--blue);
  font-size: 21px;
  font-weight: 600;
}
.hero-bottom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 0;
  position: relative;
  z-index: 2;
  font-size: 13px;
}
.hero-bottom p {
  color: var(--muted);
}
.service-types {
  display: flex;
  gap: 32px;
  font-weight: 500;
}
.scroll-cue {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}
.scroll-cue .icon {
  transform: rotate(90deg);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  align-items: end;
  margin-bottom: 60px;
}
.section-heading h2 {
  max-width: 660px;
}
.section-heading > p {
  width: 330px;
  flex-shrink: 0;
  color: var(--muted);
  font-size: 16px;
}
.experience {
  padding-top: 106px;
}
.experience-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.5fr;
  gap: clamp(40px, 8vw, 128px);
  align-items: center;
}
.experience-label {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 20px;
}
.experience-tabs {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.experience-tab {
  display: flex;
  align-items: center;
  gap: 18px;
  text-align: left;
  min-height: 70px;
  padding: 20px;
  font-size: 24px;
  letter-spacing: -0.5px;
  border-radius: 4px;
  transition:
    background 200ms,
    color 200ms,
    transform 250ms var(--ease);
}
.experience-tab .icon {
  width: 25px;
  height: 25px;
}
.experience-tab .tab-arrow {
  margin-left: auto;
  opacity: 0;
  transition:
    transform 250ms,
    opacity 250ms;
}
.experience-tab[aria-selected='true'] {
  background: var(--ice);
  color: var(--blue-dark);
}
.experience-tab[aria-selected='true'] .tab-arrow {
  opacity: 1;
}
.experience-tab:hover {
  transform: translateX(4px);
  background: var(--soft);
}
.demo-footnote {
  margin: 36px 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}
.demo-footnote > span {
  font-size: 12px;
  color: var(--muted);
}
.demo-footnote .text-link {
  font-size: 13px;
}
.demo-footnote .icon {
  width: 17px;
}

.partners {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-top: 0;
  padding-bottom: 0;
  min-height: 720px;
  background: var(--ice);
}
.partner-photo {
  position: relative;
  overflow: clip;
  min-height: 600px;
}
.partner-photo > img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  transition: transform 1.4s var(--ease);
}
.partner-photo:hover > img {
  transform: scale(1.035);
}
.photo-caption {
  position: absolute;
  left: 32px;
  bottom: 30px;
  background: white;
  padding: 12px 18px;
  font-size: 13px;
  display: flex;
  gap: 9px;
  align-items: center;
}
.photo-caption .icon {
  width: 17px;
}
.partner-copy {
  padding: 72px var(--gutter) 68px 64px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}
.partner-copy h2 {
  font-size: clamp(36px, 3.6vw, 56px);
}
.partner-copy > p {
  margin-top: 26px;
  color: var(--muted);
  font-size: 16px;
}
.partner-tabs {
  display: flex;
  gap: 5px;
  padding: 4px;
  background: #dde7f5;
  margin: 38px 0;
  width: 100%;
  border-radius: 6px;
}
.partner-tabs button {
  min-height: 48px;
  padding: 10px 12px;
  flex: 1;
  font-size: 13px;
  border-radius: 4px;
  transition:
    background 180ms,
    color 180ms;
}
.partner-tabs [aria-selected='true'] {
  background: white;
  color: var(--blue-dark);
}
#partner-panel {
  min-height: 146px;
}
#partner-panel h3 {
  font-size: 28px;
  max-width: 480px;
}
#partner-panel p {
  font-size: 16px;
  color: var(--muted);
  margin-top: 15px;
  max-width: 450px;
}
.partner-cta {
  margin-top: 24px;
}

.features > h2 {
  max-width: 770px;
}
.features-layout {
  display: grid;
  grid-template-columns: 1fr 1.35fr 1fr;
  gap: 50px;
  align-items: center;
  margin-top: 64px;
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.feature-list p {
  font-size: 15px;
  color: var(--muted);
  margin-top: 14px;
  max-width: 330px;
}
.coordination-visual {
  background: var(--ice);
  padding: 34px 22px;
  min-height: 334px;
  border-radius: 8px;
  perspective: 1000px;
}
.language-bubble {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 14px;
  background: white;
  border-radius: 8px;
  margin-bottom: 16px;
  transform: rotateY(-8deg) rotateZ(-3deg);
}
.language-bubble > span {
  font-size: 11px;
  color: var(--blue-dark);
  background: var(--ice);
  padding: 6px;
  border-radius: 5px;
}
.language-bubble p {
  font-size: 13px;
  white-space: nowrap;
}
.language-bubble .icon {
  color: var(--green);
  width: 16px;
  margin-left: auto;
}
.bubble-zh {
  transform: translateX(10px) rotateY(8deg) rotateZ(3deg);
}
.bubble-en {
  transform: rotateY(-8deg) rotateZ(-2deg);
}
.coordination-route {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 25px;
  color: var(--blue);
}
.coordination-route > svg {
  width: 120px;
}
.coordination-bird {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: white;
  font-size: 27px;
}

.journey {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  background: var(--ice);
  align-items: center;
}
.journey-copy {
  max-width: 510px;
}
.journey-copy h2 {
  font-size: clamp(44px, 6.2vw, 88px);
}
.journey-copy p {
  margin-top: 30px;
  color: var(--muted);
  max-width: 400px;
  font-size: 17px;
}
.journey-copy .button {
  margin-top: 32px;
}
.boarding-pass {
  background: white;
  max-width: 540px;
  padding: 36px;
  position: relative;
  transform: rotate(2deg);
  clip-path: polygon(
    0 0,
    100% 0,
    100% 98%,
    96% 100%,
    92% 98%,
    88% 100%,
    84% 98%,
    80% 100%,
    76% 98%,
    72% 100%,
    68% 98%,
    64% 100%,
    60% 98%,
    56% 100%,
    52% 98%,
    48% 100%,
    44% 98%,
    40% 100%,
    36% 98%,
    32% 100%,
    28% 98%,
    24% 100%,
    20% 98%,
    16% 100%,
    12% 98%,
    8% 100%,
    4% 98%,
    0 100%
  );
}
.pass-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--blue);
  margin-bottom: 22px;
}
.onboarding-list {
  list-style: none;
  counter-reset: none;
  padding: 0;
  margin: 0;
}
.onboarding-list li {
  padding: 19px 0;
  position: relative;
}
.onboarding-list h3 {
  font-size: 18px;
  font-weight: 550;
}
.onboarding-list p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 7px;
}
.pass-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--ink);
  color: white;
  padding: 17px;
  margin-top: 15px;
  margin-bottom: 12px;
  font-size: 14px;
}
.pass-footer .icon {
  width: 18px;
}

.faq {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: 100px;
}
.faq h2 {
  font-size: clamp(36px, 4vw, 58px);
  max-width: 530px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq details {
  padding: 24px;
  background: var(--soft);
}
.faq details[open] {
  background: var(--ice);
}
.faq summary {
  display: flex;
  list-style: none;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 500;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq-plus {
  position: relative;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.faq-plus::before,
.faq-plus::after {
  content: '';
  position: absolute;
  left: 1px;
  top: 8px;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform 220ms;
}
.faq-plus::after {
  transform: rotate(90deg);
}
details[open] .faq-plus::after {
  transform: rotate(0deg);
}
.faq details p {
  color: var(--muted);
  font-size: 15px;
  padding-top: 19px;
  padding-right: 24px;
}

.contact-section {
  background: var(--blue);
  color: white;
  padding-block: 90px;
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 40px;
  align-items: center;
  overflow: clip;
}
.contact-section h2 {
  max-width: 800px;
  font-size: clamp(40px, 5vw, 74px);
}
.contact-section p {
  font-size: 17px;
  max-width: 510px;
  margin-top: 28px;
  color: #ffffff;
}
.contact-section .button {
  margin-top: 32px;
}
.contact-bird {
  width: 460px;
  object-fit: contain;
  transform: rotate(-12deg) scale(1.15);
}
.site-footer {
  padding-top: 55px;
  padding-bottom: 24px;
  background: #f8fafc;
}
.footer-top,
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}
.footer-top p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 12px;
}
.footer-email {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 20px;
  letter-spacing: -0.5px;
}
.footer-email:hover {
  color: var(--blue);
}
.footer-bottom {
  margin-top: 54px;
  font-size: 12px;
  color: var(--muted);
}
.footer-bottom .text-link {
  font-size: 12px;
}
.motion-toggle {
  font-size: 13px;
}
.motion-bars {
  display: flex;
  gap: 3px;
  align-items: center;
  width: 22px;
  height: 24px;
}
.motion-bars i {
  width: 3px;
  height: 12px;
  background: var(--blue);
}
.motion-bars i:nth-child(2) {
  height: 20px;
}
.motion-bars i:nth-child(3) {
  height: 16px;
}

dialog {
  border: 0;
  border-radius: 16px;
  padding: 44px;
  color: var(--ink);
  width: min(550px, calc(100vw - 32px));
  max-height: calc(100svh - 40px);
  overscroll-behavior: contain;
}
dialog::backdrop {
  background: #11253c99;
}
dialog h2 {
  font-size: 35px;
  padding-right: 20px;
}
dialog > p {
  font-size: 15px;
  color: var(--muted);
  margin-top: 20px;
}
.dialog-close {
  position: absolute;
  right: 12px;
  top: 12px;
}
#contact-form {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}
#contact-form label {
  display: grid;
  gap: 8px;
  font-size: 14px;
}
#contact-form input,
#contact-form select {
  width: 100%;
  min-height: 48px;
  border: 1px solid #c8d6e6;
  border-radius: 5px;
  background: white;
  padding: 12px;
  color: var(--ink);
}
.direct-email {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  margin-top: 20px;
  font-size: 15px;
}
.direct-email a {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.direct-email button {
  color: var(--blue);
  font-size: 13px;
}
dialog .copy-status {
  min-height: 18px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--green);
}
#credits-content {
  margin-top: 25px;
  font-size: 14px;
}
#credits-content p {
  margin-top: 20px;
}
#credits-content a {
  color: var(--blue-dark);
  text-decoration: underline;
}
.noscript-note {
  background: var(--ice);
  padding: 24px;
  text-align: center;
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy h1 {
    animation: hero-arrive 900ms var(--ease) both;
  }
  .hero-description {
    animation: hero-arrive 900ms 90ms var(--ease) both;
  }
  .hero-actions {
    animation: hero-arrive 900ms 160ms var(--ease) both;
  }
  .hero-product {
    animation: hero-arrive 900ms 220ms var(--ease) both;
  }
  .reveal.is-visible {
    animation: section-arrive 800ms var(--ease) both;
  }
  .feature-list .reveal:nth-child(2) {
    animation-delay: 100ms;
  }
  .faq-list .reveal:nth-child(even) {
    animation-delay: 70ms;
  }
  .partner-changing {
    animation: partner-change 550ms var(--ease) both;
  }
  dialog[open] {
    animation: dialog-arrive 300ms var(--ease) both;
  }
}
@keyframes hero-arrive {
  from {
    transform: translateY(28px);
    opacity: 1;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes section-arrive {
  from {
    transform: translateY(30px);
    opacity: 0.2;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes partner-change {
  from {
    opacity: 0.3;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes dialog-arrive {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
[data-motion='off'] *,
[data-motion='off'] *::before,
[data-motion='off'] *::after {
  animation: none !important;
  transition: none !important;
}
[data-motion='off'] {
  scroll-behavior: auto;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Keep public copy readable; the scaled product fragments retain their native density. */
.brand-sub,
.scene-controls > span,
.hero-bottom,
.service-types,
.demo-footnote > span,
.demo-footnote .text-link,
.photo-caption,
.footer-bottom,
.footer-bottom .text-link {
  font-size: 13px;
}
.feature-list p,
.partner-copy > p,
#partner-panel p,
.journey-copy p,
.onboarding-list p,
.faq details p,
.contact-section p {
  font-size: 16px;
}