:root {
  --ink: #202425;
  --muted: #697174;
  --paper: #f7f4ed;
  --white: #ffffff;
  --teal: #0c8f84;
  --teal-dark: #076a62;
  --magenta: #d84fb3;
  --yellow: #ffd45a;
  --line: #d8dcda;
  --shadow: 0 14px 34px rgba(32, 36, 37, 0.12);
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button {
  font: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(32, 36, 37, 0.12);
  background: rgba(247, 244, 237, 0.96);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 22px;
  font-weight: 800;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav > a:not(.button) {
  padding: 9px 13px;
  border-bottom: 2px solid transparent;
  color: #434a4c;
  font-weight: 700;
}

.site-nav > a:not(.button):hover,
.site-nav > a[aria-current="page"]:not(.button) {
  border-color: var(--magenta);
  color: var(--ink);
}

.nav-toggle {
  position: relative;
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  position: absolute;
  left: 50%;
  display: block;
  width: 20px;
  height: 2px;
  margin-left: -10px;
  background: var(--ink);
  content: "";
  transition: top 180ms ease, transform 180ms ease, opacity 180ms ease;
}

.nav-toggle span {
  top: 20px;
}

.nav-toggle::before {
  top: 13px;
}

.nav-toggle::after {
  top: 27px;
}

.nav-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"]::before {
  top: 20px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"]::after {
  top: 20px;
  transform: rotate(-45deg);
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--yellow);
  box-shadow: 4px 4px 0 var(--ink);
  color: var(--ink);
  font-weight: 800;
  line-height: 1;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  box-shadow: 2px 2px 0 var(--ink);
  transform: translate(2px, 2px);
}

.button-dark {
  background: var(--ink);
  box-shadow: 4px 4px 0 var(--magenta);
  color: var(--white);
}

.button-dark:hover {
  box-shadow: 2px 2px 0 var(--magenta);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid var(--teal);
  color: var(--teal-dark);
  font-weight: 800;
}

.text-link::after {
  content: "\2192";
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  padding: 5px 10px;
  border: 1px solid var(--ink);
  background: var(--magenta);
  color: var(--white);
  font-size: 13px;
  font-weight: 800;
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}

.hero::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 24%;
  height: 100%;
  background: var(--teal);
  content: "";
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 650px;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 72px;
  padding: 74px 0 58px;
}

.hero-copy {
  max-width: 650px;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 620px;
  margin: 26px 0 0;
  color: #3f4648;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 32px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.hero-meta strong {
  display: block;
  font-size: 20px;
}

.hero-meta span {
  color: var(--muted);
  font-size: 13px;
}

.hero-art {
  position: relative;
  display: flex;
  min-height: 530px;
  align-items: center;
  justify-content: center;
}

.hero-art::before {
  position: absolute;
  top: 32px;
  left: 0;
  width: 82%;
  height: 82%;
  border: 2px solid var(--ink);
  background: var(--yellow);
  box-shadow: 14px 14px 0 var(--magenta);
  content: "";
  transform: rotate(-3deg);
}

.phone-shot {
  position: relative;
  z-index: 2;
  width: min(100%, 320px);
  max-width: 400px;
  padding: 10px;
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}

.phone-shot img {
  width: 100%;
  max-width: 400px;
  border-radius: 4px;
}

.shot-note {
  position: absolute;
  right: -10px;
  bottom: 48px;
  z-index: 3;
  width: 156px;
  padding: 12px 14px;
  border: 2px solid var(--ink);
  background: var(--white);
  box-shadow: 5px 5px 0 var(--ink);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.45;
}

.ticker {
  overflow: hidden;
  border-bottom: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
}

.ticker-track {
  display: flex;
  width: max-content;
  gap: 34px;
  padding: 12px 0;
  font-weight: 800;
}

.ticker-track span::before {
  margin-right: 34px;
  color: var(--yellow);
  content: "\25A0";
}

.section {
  padding: 88px 0;
}

.section-white {
  background: var(--white);
}

.section-ink {
  background: var(--ink);
  color: var(--white);
}

.section-teal {
  background: var(--teal);
  color: var(--white);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 40px;
}

.section-head h2 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: 0;
}

.section-index {
  color: var(--magenta);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border: 1px solid var(--ink);
  background: var(--ink);
}

.feature-item {
  min-height: 250px;
  padding: 30px 24px;
  background: var(--white);
}

.feature-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  margin-bottom: 42px;
  border: 2px solid var(--ink);
  background: var(--yellow);
  font-weight: 900;
}

.feature-item:nth-child(2) .feature-mark,
.feature-item:nth-child(4) .feature-mark {
  background: var(--magenta);
  color: var(--white);
}

.feature-item h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.screens-wrap {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 60px;
  align-items: start;
}

.screens-intro {
  position: sticky;
  top: 116px;
}

.screens-intro h2 {
  margin: 0 0 24px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.12;
}

.screens-intro ul {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.screens-intro li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.screen-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.screen-figure {
  margin: 0;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: #f7f4ed;
  color: var(--ink);
  cursor: zoom-in;
}

.screen-figure:nth-child(even) {
  margin-top: 46px;
}

.screen-figure img,
.app-shot {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 0 auto;
}

.screen-figure figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  font-weight: 800;
}

.screen-figure figcaption span {
  color: var(--muted);
  font-weight: 400;
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.route-item {
  position: relative;
  min-height: 330px;
  padding: 32px;
  border: 1px solid var(--ink);
  background: var(--paper);
}

.route-item:nth-child(2) {
  background: var(--yellow);
}

.route-item:nth-child(3) {
  background: var(--teal);
  color: var(--white);
}

.route-num {
  display: block;
  margin-bottom: 66px;
  color: var(--magenta);
  font-size: 56px;
  font-weight: 900;
  line-height: 1;
}

.route-item:nth-child(3) .route-num {
  color: var(--yellow);
}

.route-item h3 {
  margin: 0 0 12px;
  font-size: 25px;
}

.route-item p {
  margin: 0 0 20px;
}

.route-item a {
  position: absolute;
  right: 32px;
  bottom: 30px;
  border-bottom: 2px solid currentColor;
  font-weight: 800;
}

.proof-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
  align-items: start;
}

.stat-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.4);
  border-left: 1px solid rgba(255, 255, 255, 0.4);
}

.stat {
  min-height: 155px;
  padding: 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
}

.stat strong {
  display: block;
  color: var(--yellow);
  font-size: 38px;
  line-height: 1.2;
}

.stat span {
  font-size: 14px;
}

.reviews h2 {
  margin: 0 0 30px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
}

.quote {
  margin: 0;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.35);
}

.quote p {
  margin: 0 0 12px;
  font-size: 18px;
}

.quote cite {
  color: #cdd8d6;
  font-size: 13px;
  font-style: normal;
}

.faq-list {
  border-top: 1px solid var(--ink);
}

.faq-list details {
  border-bottom: 1px solid var(--ink);
}

.faq-list summary {
  position: relative;
  padding: 22px 56px 22px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 800;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 21px;
  right: 12px;
  color: var(--teal);
  content: "+";
  font-size: 28px;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "\2212";
}

.faq-answer {
  max-width: 900px;
  padding: 0 56px 24px 0;
  color: #4d5557;
}

.faq-answer p {
  margin: 0 0 12px;
}

.faq-answer a {
  color: var(--teal-dark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.download-band {
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  background: var(--yellow);
}

.download-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 48px 0;
}

.download-inner h2 {
  margin: 0 0 8px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
}

.download-inner p,
.download-note {
  margin: 0;
}

.site-footer {
  padding: 52px 0 26px;
  background: var(--ink);
  color: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 56px;
}

.footer-brand p {
  max-width: 480px;
  margin: 18px 0 0;
  color: #c5cdce;
}

.footer-title {
  margin: 0 0 16px;
  color: var(--yellow);
  font-size: 14px;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a:hover {
  color: var(--yellow);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid #515758;
  color: #aeb7b8;
  font-size: 12px;
}

.footer-bottom p {
  margin: 0;
}

.page-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ink);
  background: var(--white);
}

.page-hero::before {
  position: absolute;
  top: 0;
  right: 7%;
  width: 88px;
  height: 100%;
  background: var(--magenta);
  content: "";
}

.page-hero-inner {
  position: relative;
  display: grid;
  min-height: 400px;
  grid-template-columns: 1.4fr 0.6fr;
  align-items: center;
  gap: 60px;
  padding: 70px 0;
}

.page-hero h1 {
  max-width: 820px;
  font-size: clamp(40px, 6vw, 68px);
}

.page-hero-copy {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.page-hero-mark {
  display: grid;
  width: 170px;
  height: 170px;
  place-items: center;
  border: 2px solid var(--ink);
  background: var(--yellow);
  box-shadow: 10px 10px 0 var(--teal);
  font-size: 66px;
  font-weight: 900;
  transform: rotate(4deg);
}

.content-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 70px;
  align-items: start;
}

.side-nav {
  position: sticky;
  top: 108px;
  padding: 20px 0;
  border-top: 3px solid var(--teal);
  border-bottom: 1px solid var(--line);
}

.side-nav strong {
  display: block;
  margin-bottom: 14px;
}

.side-nav a {
  display: block;
  padding: 7px 0;
  color: var(--muted);
}

.side-nav a:hover {
  color: var(--teal-dark);
}

.article-section {
  padding: 0 0 64px;
  scroll-margin-top: 110px;
}

.article-section + .article-section {
  padding-top: 64px;
  border-top: 1px solid var(--line);
}

.article-section h2 {
  margin: 0 0 28px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
}

.article-section h3 {
  margin: 28px 0 8px;
  font-size: 21px;
}

.article-section p {
  margin: 0 0 16px;
  color: #434a4c;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--ink);
  background: var(--ink);
}

.check-item {
  min-height: 180px;
  padding: 24px;
  background: var(--white);
}

.check-item strong {
  display: block;
  margin-bottom: 10px;
  color: var(--teal-dark);
  font-size: 18px;
}

.check-item p {
  margin: 0;
}

.step-list {
  counter-reset: steps;
}

.guide-step {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 26px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  counter-increment: steps;
}

.guide-step:first-child {
  border-top: 0;
}

.guide-step::before {
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  border: 2px solid var(--ink);
  background: var(--yellow);
  box-shadow: 4px 4px 0 var(--ink);
  content: counter(steps, decimal-leading-zero);
  font-size: 20px;
  font-weight: 900;
}

.guide-step h3 {
  margin: 0 0 8px;
}

.guide-step p {
  margin: 0 0 10px;
}

.inline-shot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 330px);
  gap: 42px;
  align-items: center;
  margin-top: 30px;
  padding: 30px;
  background: var(--teal);
  color: var(--white);
}

.inline-shot p {
  color: var(--white);
}

.inline-shot img {
  width: 100%;
  max-width: 400px;
  border: 8px solid var(--white);
}

.notice {
  margin: 24px 0;
  padding: 22px 24px;
  border-left: 6px solid var(--magenta);
  background: #fce9f7;
  color: #532048;
}

.notice strong {
  display: block;
  margin-bottom: 4px;
}

.feature-detail {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 42px;
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.feature-detail:first-of-type {
  border-top: 0;
}

.feature-detail h3 {
  margin: 0;
  font-size: 26px;
}

.feature-detail p:first-child {
  margin-top: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  padding: 5px 9px;
  border: 1px solid var(--ink);
  background: var(--yellow);
  font-size: 12px;
  font-weight: 800;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.related-link {
  padding: 24px;
  border: 1px solid var(--ink);
  background: var(--white);
}

.related-link strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(20, 23, 24, 0.92);
}

.lightbox.is-open {
  display: grid;
}

.lightbox img {
  width: auto;
  max-width: min(400px, 88vw);
  max-height: 82vh;
  border: 6px solid var(--white);
}

.lightbox-close {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 46px;
  height: 46px;
  border: 1px solid var(--white);
  border-radius: 50%;
  background: var(--ink);
  color: var(--white);
  cursor: pointer;
  font-size: 30px;
  line-height: 1;
}

@media (max-width: 980px) {
  .hero-grid,
  .proof-grid,
  .screens-wrap,
  .content-layout {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 18px;
    padding-top: 56px;
  }

  .hero::after {
    top: auto;
    bottom: 0;
    width: 100%;
    height: 32%;
  }

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

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

  .screens-intro,
  .side-nav {
    position: static;
  }

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

  .route-item {
    min-height: 260px;
  }

  .page-hero-inner {
    grid-template-columns: 1fr auto;
  }

  .side-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
  }

  .side-nav strong {
    width: 100%;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .nav-wrap {
    min-height: 68px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    padding: 18px 20px 24px;
    border-bottom: 2px solid var(--ink);
    background: var(--paper);
  }

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

  .site-nav > a:not(.button) {
    padding: 13px 4px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav .button {
    margin-top: 8px;
  }

  .hero-grid {
    min-height: auto;
    padding: 42px 0 34px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 43px;
  }

  .hero-lead,
  .page-hero-copy {
    font-size: 17px;
  }

  .hero-art {
    min-height: 440px;
  }

  .hero-art::before {
    left: 4%;
    width: 88%;
  }

  .phone-shot {
    width: 260px;
  }

  .shot-note {
    right: 0;
    bottom: 30px;
  }

  .section {
    padding: 64px 0;
  }

  .section-head,
  .download-inner,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-head {
    display: flex;
  }

  .feature-grid,
  .screen-gallery,
  .stat-list,
  .check-grid,
  .related-links {
    grid-template-columns: 1fr;
  }

  .screen-figure:nth-child(even) {
    margin-top: 0;
  }

  .proof-grid {
    gap: 46px;
  }

  .download-inner {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page-hero::before {
    right: 0;
    width: 8px;
  }

  .page-hero-inner {
    min-height: auto;
    grid-template-columns: 1fr;
    padding: 54px 0;
  }

  .page-hero-mark {
    width: 110px;
    height: 110px;
    font-size: 40px;
  }

  .guide-step {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 16px;
  }

  .guide-step::before {
    width: 48px;
    height: 48px;
    font-size: 16px;
  }

  .inline-shot,
  .feature-detail {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

.platform-downloads {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  vertical-align: middle;
}

.platform-downloads > a {
  white-space: nowrap;
}