@charset "UTF-8";

:root {
  --orange: #ff7200;
  --orange-deep: #df5500;
  --ink: #161616;
  --ink-soft: #292929;
  --paper: #fffdfa;
  --muted: #6c6a67;
  --line: #e7e1da;
  --radius: 5px;
  --shell: 1220px;
  --header-height: 76px;
  --shadow: 0 14px 30px rgba(22, 22, 22, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

a,
button {
  -webkit-tap-highlight-color: transparent;
}

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

button {
  color: inherit;
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-shell {
  width: min(calc(100% - 48px), var(--shell));
  margin: 0 auto;
}

.icon {
  display: inline-block;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  vertical-align: middle;
}

.icon::before {
  display: block;
  width: 100%;
  height: 100%;
  content: "";
  background: center / contain no-repeat;
}

.icon-download::before {
  background-image: url("../icons/download.svg");
}

.icon-menu::before {
  background-image: url("../icons/menu.svg");
}

.icon-close::before {
  background-image: url("../icons/close.svg");
}

.icon-arrow::before {
  background-image: url("../icons/arrow.svg");
}

.icon-globe::before {
  background-image: url("../icons/globe.svg");
}

.icon-plus::before {
  background-image: url("../icons/plus.svg");
}

.icon-bolt::before {
  background-image: url("../icons/bolt.svg");
}

.icon-shield::before {
  background-image: url("../icons/shield.svg");
}

.icon-route::before {
  background-image: url("../icons/route.svg");
}

.icon-book::before {
  background-image: url("../icons/book.svg");
}

.icon-wechat::before {
  background-image: url("../icons/wechat.svg");
}

.icon-weibo::before {
  background-image: url("../icons/weibo.svg");
}

.icon-bell::before {
  background-image: url("../icons/bell.svg");
}

.icon-bilibili::before {
  background-image: url("../icons/bilibili.svg");
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 250, 0.98);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: max-content;
  gap: 9px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.6px;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  object-fit: contain;
}

.primary-nav ul,
.site-footer ul {
  display: flex;
  padding: 0;
  margin: 0;
  list-style: none;
}

.primary-nav ul {
  align-items: center;
  justify-content: center;
  gap: clamp(21px, 3vw, 42px);
}

.primary-nav a {
  position: relative;
  display: inline-block;
  padding: 7px 0;
  font-size: 14px;
  font-weight: 700;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: 1px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-download,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  gap: 9px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 800;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.nav-download {
  min-width: 132px;
  padding: 0 15px;
  border: 1px solid var(--orange);
  color: var(--orange-deep);
}

.nav-download .icon,
.button-primary .icon {
  filter: invert(43%) sepia(98%) saturate(2440%) hue-rotate(2deg) brightness(104%) contrast(105%);
}

.nav-download:hover {
  border-color: var(--orange-deep);
  background: var(--orange);
  color: #fff;
}

.nav-download:hover .icon {
  filter: brightness(0) invert(1);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
}

.menu-toggle .icon {
  width: 20px;
  height: 20px;
}

.hero {
  padding: 70px 0 66px;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(410px, 520px);
  align-items: center;
  gap: 24px;
}

.hero-copy {
  max-width: 575px;
  padding: 20px 0 28px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--orange-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.3px;
}

.hero h1,
.section-heading h2,
.download h2 {
  margin: 0;
  font-weight: 900;
  letter-spacing: -1.4px;
}

.hero h1 {
  font-size: clamp(48px, 6vw, 80px);
  line-height: 1;
}

.hero-title {
  margin: 15px 0 16px;
  font-size: clamp(26px, 3.1vw, 38px);
  font-weight: 900;
  letter-spacing: -0.8px;
  line-height: 1.2;
}

.hero-summary {
  max-width: 520px;
  margin: 0 0 29px;
  color: var(--muted);
  font-size: 16px;
}

.button {
  min-width: 174px;
  padding: 0 23px;
}

.button-primary {
  border: 1px solid var(--orange);
  background: var(--orange);
  color: #fff;
  box-shadow: 6px 6px 0 var(--ink);
}

.button-primary .icon {
  filter: brightness(0) invert(1);
}

.button-primary:hover {
  background: var(--orange-deep);
  transform: translate(-2px, -2px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: flex-end;
  min-height: 545px;
}

.hero-phone {
  width: min(100%, 314px);
  margin: 0;
  padding: 11px;
  border-radius: 26px;
  background: #111;
  box-shadow: var(--shadow);
}

.hero-phone img {
  width: 100%;
  height: auto;
  border-radius: 17px;
}

.route-float {
  position: absolute;
  bottom: 68px;
  left: 12px;
  z-index: 1;
  width: 267px;
  padding: 17px;
  border: 1px solid #303030;
  border-radius: var(--radius);
  color: #fff;
  background: rgba(24, 24, 24, 0.98);
  box-shadow: var(--shadow);
}

.route-float h2 {
  margin: 0 0 9px;
  color: #fff;
  font-size: 17px;
}

.float-item {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  border-top: 1px solid #3c3c3c;
}

.float-item .icon,
.route-card .icon {
  filter: invert(49%) sepia(96%) saturate(2299%) hue-rotate(3deg) brightness(105%) contrast(104%);
}

.float-item strong,
.float-item small,
.float-item em {
  display: block;
  font-size: 12px;
  font-style: normal;
  line-height: 1.35;
}

.float-item small {
  margin-top: 2px;
  color: #b5b5b5;
}

.float-item em {
  color: #ff9a4e;
  font-weight: 700;
}

.routes {
  padding: 72px 0 80px;
  color: #fff;
  background: var(--ink);
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.section-heading {
  max-width: 650px;
  margin-bottom: 39px;
}

.section-heading-centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading-dark .eyebrow {
  color: #ff9b53;
}

.section-heading h2,
.download h2 {
  font-size: clamp(30px, 3.5vw, 45px);
  line-height: 1.18;
}

.section-heading > p:last-child {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.section-heading-dark > p:last-child {
  color: #bdbdbd;
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid #3d3d3d;
  border-radius: var(--radius);
}

.route-card {
  min-height: 186px;
  padding: 26px 25px 22px;
}

.route-card + .route-card {
  border-left: 1px solid #3d3d3d;
}

.route-card .icon {
  width: 29px;
  height: 29px;
}

.route-card h3 {
  margin: 18px 0 7px;
  font-size: 19px;
}

.route-card p {
  margin: 0;
  color: #bdbdbd;
  font-size: 14px;
}

.screens {
  padding: 82px 0 88px;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.screens-heading {
  display: grid;
  max-width: none;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  column-gap: 46px;
  align-items: end;
}

.screens-heading .eyebrow,
.screens-heading h2 {
  grid-column: 1;
}

.screens-heading > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  margin: 0 0 4px;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: end;
  gap: clamp(14px, 2.4vw, 28px);
}

.screen-card {
  min-width: 0;
  margin: 0;
}

.screen-card img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(22, 22, 22, 0.08);
}

.screen-card-featured {
  transform: translateY(-15px);
}

.screen-card figcaption {
  display: grid;
  grid-template-columns: 31px 1fr;
  column-gap: 5px;
  margin-top: 11px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.screen-card figcaption b {
  color: var(--orange-deep);
  font-size: 12px;
  letter-spacing: 0.5px;
}

.screen-card figcaption small {
  grid-column: 2;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.faq {
  padding: 79px 0 20px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.82fr) minmax(430px, 1.18fr);
  gap: 68px;
  align-items: start;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-item button,
.official-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 57px;
  padding: 0 18px;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
}

.faq-item button .icon,
.official-toggle > .icon {
  transition: transform 180ms ease;
}

.faq-item button .icon {
  filter: invert(43%) sepia(98%) saturate(2440%) hue-rotate(2deg) brightness(104%) contrast(105%);
}

.faq-item button[aria-expanded="true"] .icon,
.official-toggle[aria-expanded="true"] > .icon {
  transform: rotate(90deg);
}

.faq-answer {
  padding: 0 18px 16px;
}

.faq-answer p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.official {
  padding: 28px 0 78px;
}

.official-toggle {
  border: 1px solid var(--orange);
  border-radius: var(--radius);
}

.official-toggle > span {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.official-toggle .icon-globe {
  filter: invert(43%) sepia(98%) saturate(2440%) hue-rotate(2deg) brightness(104%) contrast(105%);
}

.official-link {
  padding: 15px 18px;
  border: 1px solid var(--orange);
  border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
}

.official-link a {
  color: var(--orange-deep);
  font-size: 14px;
  font-weight: 700;
}

.reviews {
  padding: 78px 0 82px;
  background: #f6f2ed;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

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

.review-card {
  display: flex;
  min-height: 278px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid #e1d9d1;
  border-radius: var(--radius);
  background: var(--paper);
}

.review-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.review-card header span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 33px;
  min-height: 26px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--orange);
  font-size: 12px;
  font-weight: 800;
}

.review-card header b {
  color: #e8d9cd;
  font-family: Georgia, serif;
  font-size: 38px;
  line-height: 1;
}

.review-card > p {
  margin: 19px 0 17px;
  color: #4e4b47;
  font-size: 14px;
  line-height: 1.82;
}

.review-card footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid #eee7df;
  color: var(--muted);
  font-size: 12px;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--orange-deep);
  font-size: 12px;
  font-weight: 800;
}

.review-card time {
  margin-left: auto;
}

.download {
  padding: 32px 0;
  background: var(--ink);
  color: #fff;
}

.download-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 160px;
  padding: 30px 45px;
  border-left: 5px solid var(--orange);
  background: #242424;
  gap: 24px;
}

.download .eyebrow {
  margin-bottom: 7px;
  color: #ff9b53;
}

.download h2 {
  font-size: 37px;
}

.download-inner > div > p:last-child {
  margin: 6px 0 0;
  color: #c5c5c5;
  font-size: 14px;
}

.button-light {
  min-width: 192px;
  border: 1px solid #fff;
  background: #fff;
  color: var(--ink);
}

.button-light .icon {
  filter: brightness(0);
}

.button-light:hover {
  border-color: var(--orange);
  background: var(--orange);
  color: #fff;
}

.button-light:hover .icon {
  filter: brightness(0) invert(1);
}

.site-footer {
  padding: 39px 0 16px;
  color: #e1e1e1;
  background: #111;
  text-align: center;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.55fr repeat(3, minmax(90px, 0.72fr)) 1.2fr;
  align-items: start;
  gap: 30px;
}

.footer-brand {
  display: grid;
  grid-template-columns: 40px auto;
  column-gap: 9px;
  align-items: center;
  justify-self: center;
}

.footer-brand img {
  grid-row: span 2;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  object-fit: contain;
}

.footer-brand strong {
  color: #fff;
  font-size: 20px;
}

.footer-brand p {
  margin: 0;
  color: #a7a7a7;
  font-size: 12px;
}

.footer-title {
  margin: 0 0 13px;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.footer-nav ul {
  display: grid;
  gap: 5px;
}

.site-footer a,
.copyright {
  color: #a7a7a7;
  font-size: 12px;
}

.site-footer a:hover {
  color: #fff;
}

.social-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.social-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 39px;
  height: 39px;
  border: 1px solid #393939;
  border-radius: 50%;
  background: #282828;
}

.social-nav a:hover {
  border-color: var(--orange);
  background: var(--orange);
}

.social-nav .icon {
  width: 18px;
  height: 18px;
  filter: brightness(0) invert(1);
}

.copyright {
  grid-column: 1 / -1;
  margin: 10px 0 0;
  text-align: center;
  white-space: nowrap;
}

@media (max-width: 920px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(355px, 0.9fr);
  }

  .hero-visual {
    min-height: 500px;
  }

  .route-float {
    left: -12px;
  }

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

  .route-card:nth-child(3) {
    border-left: 0;
    border-top: 1px solid #3d3d3d;
  }

  .route-card:nth-child(4) {
    border-top: 1px solid #3d3d3d;
  }

  .screen-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 670px;
    margin: 0 auto;
  }

  .screen-card-featured {
    transform: none;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .footer-grid {
    grid-template-columns: 1.2fr repeat(3, 1fr);
  }

  .social-nav {
    grid-column: 1 / -1;
  }
}

@media (max-width: 700px) {
  :root {
    --header-height: 64px;
  }

  body {
    padding-top: var(--header-height);
  }

  .site-header {
    position: fixed;
    right: 0;
    left: 0;
    width: 100%;
    background: var(--paper);
    transform: translate3d(0, 0, 0);
    -webkit-transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    will-change: transform;
  }

  .page-shell,
  .nav-shell {
    width: min(calc(100% - 32px), var(--shell));
  }

  .nav-shell {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    grid-template-rows: var(--header-height);
    min-height: var(--header-height);
    column-gap: 10px;
    row-gap: 0;
  }

  .brand {
    grid-row: 1;
    grid-column: 1;
    gap: 7px;
    font-size: 17px;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  .primary-nav {
    display: none;
    grid-row: 2;
    grid-column: 1 / -1;
    margin: 0 -16px;
    padding: 0 16px 14px;
    border-top: 1px solid var(--line);
    background: var(--paper);
  }

  .primary-nav.is-open {
    display: block;
  }

  .nav-download {
    grid-row: 1;
    grid-column: 3;
    min-width: auto;
    min-height: 36px;
    margin-left: auto;
    padding: 0 9px;
    font-size: 12px;
  }

  .nav-download .icon {
    width: 15px;
    height: 15px;
  }

  .menu-toggle {
    display: inline-flex;
    grid-row: 1;
    grid-column: 4;
    width: 36px;
    height: 36px;
  }

  .primary-nav ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding-top: 13px;
  }

  .primary-nav a {
    display: block;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    font-size: 13px;
    font-weight: 700;
  }

  .primary-nav a::after {
    display: none;
  }

  .hero {
    padding: 45px 0 43px;
  }

  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }

  .hero-copy {
    max-width: 600px;
    padding: 0;
    text-align: center;
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero-title {
    font-size: 27px;
  }

  .hero-summary {
    margin-right: auto;
    margin-left: auto;
    font-size: 14px;
  }

  .hero-visual {
    display: block;
    min-height: 0;
  }

  .hero-phone {
    width: min(82vw, 306px);
    margin: 0 auto;
  }

  .route-float {
    display: none;
  }

  .routes,
  .screens,
  .reviews {
    padding: 55px 0;
  }

  .section-heading {
    margin-bottom: 29px;
  }

  .section-heading h2,
  .download h2 {
    font-size: 31px;
  }

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

  .route-card {
    min-height: auto;
    padding: 23px;
  }

  .route-card + .route-card,
  .route-card:nth-child(3),
  .route-card:nth-child(4) {
    border-top: 1px solid #3d3d3d;
    border-left: 0;
  }

  .screens-heading {
    display: block;
  }

  .screens-heading > p:last-child {
    margin-top: 13px;
  }

  .screen-grid {
    display: flex;
    width: calc(100% + 16px);
    max-width: none;
    margin-right: -16px;
    gap: 13px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
  }

  .screen-card {
    flex: 0 0 min(69vw, 267px);
    scroll-snap-align: start;
  }

  .faq {
    padding: 55px 0 18px;
  }

  .official {
    padding: 22px 0 55px;
  }

  .review-grid {
    grid-template-columns: 1fr;
  }

  .review-card {
    min-height: auto;
  }

  .download {
    padding: 18px 0;
  }

  .download-inner {
    display: grid;
    min-height: 0;
    padding: 27px 24px;
  }

  .button-light {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 25px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .social-nav {
    grid-column: 1 / -1;
  }

  .copyright {
    grid-column: 1 / -1;
    margin-top: 0;
    text-align: left;
    white-space: normal;
  }
}

@media (max-width: 380px) {
  .brand span {
    font-size: 15px;
  }

  .nav-download span {
    display: none;
  }

  .nav-download {
    width: 36px;
    padding: 0;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-title {
    font-size: 24px;
  }

  .primary-nav ul {
    grid-template-columns: 1fr;
  }
}