@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800;900&display=swap");

:root {
  --ink: #101719;
  --graphite: #101719;
  --graphite-2: #182126;
  --cyan: #63e0df;
  --cyan-soft: #c7f1ef;
  --orange: #db653e;
  --orange-soft: #f3b18e;
  --fog: #e5eaeb;
  --paper: #f2f0e9;
  --cream: #fff9ed;
  --muted: #6d7476;
  --max: 1260px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--paper);
  background: var(--graphite);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

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

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

button {
  font: inherit;
}

.header {
  width: min(calc(100% - 44px), var(--max));
  min-height: 90px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 30;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -.04em;
}

.brand img,
.footer-brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 31px;
  color: rgba(242, 240, 233, .7);
  font-size: 14px;
  font-weight: 700;
}

.nav a {
  transition: color .2s ease, transform .2s ease;
}

.nav a:hover {
  color: var(--cyan);
  transform: translateY(-2px);
}

.header-download,
.main-download,
.final-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--graphite);
  background: var(--cyan);
  border-radius: 999px;
  font-weight: 900;
  transition: transform .2s ease, box-shadow .2s ease;
}

.header-download {
  min-height: 46px;
  padding: 0 23px;
  font-size: 14px;
}

.header-download:hover,
.main-download:hover,
.final-cta a:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 38px rgba(0, 0, 0, .28);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  color: var(--paper);
  background: transparent;
  border: 0;
  font-size: 20px;
  cursor: pointer;
}

.hero {
  width: min(calc(100% - 44px), 1420px);
  min-height: 740px;
  margin: 18px auto 82px;
  display: grid;
  grid-template-columns: .16fr .74fr 1.1fr;
  align-items: center;
  gap: 36px;
}

.hero-number {
  align-self: stretch;
  display: flex;
  align-items: flex-end;
  padding-bottom: 85px;
  color: var(--orange);
  font-size: clamp(88px, 11vw, 155px);
  line-height: .78;
  font-weight: 900;
  letter-spacing: -.09em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-tag {
  margin: 0 0 21px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.section-tag.pale {
  color: var(--cyan-soft);
}

.hero h1 {
  max-width: 710px;
  margin: 0;
  font-size: clamp(58px, 6.7vw, 98px);
  line-height: .96;
  letter-spacing: -.075em;
  font-weight: 900;
}

.hero h1 span {
  color: var(--orange);
}

.lead {
  max-width: 650px;
  margin: 33px 0 0;
  color: rgba(242, 240, 233, .68);
  font-size: 18px;
  line-height: 1.95;
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 25px;
}

.main-download {
  min-height: 60px;
  padding: 0 32px;
  font-size: 16px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 15px;
  font-weight: 900;
}

.text-link i {
  transition: transform .2s ease;
}

.text-link:hover i {
  transform: translateX(5px);
}

.hero-meta {
  margin-top: 27px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  color: rgba(242, 240, 233, .56);
  font-size: 13px;
}

.hero-media {
  min-height: 620px;
  margin: 0;
  display: grid;
  place-items: center;
  position: relative;
}

.hero-media::before {
  content: "";
  position: absolute;
  width: 92%;
  aspect-ratio: 1.12;
  background: var(--orange-soft);
  clip-path: polygon(7% 0, 93% 5%, 100% 44%, 87% 98%, 13% 100%, 0 61%);
}

.hero-media::after {
  content: "";
  position: absolute;
  width: 155px;
  height: 155px;
  left: 3%;
  top: 8%;
  background: var(--cyan);
  border-radius: 50%;
}

.hero-media img {
  width: min(92%, 810px);
  max-height: 590px;
  object-fit: contain;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 35px 42px rgba(0, 0, 0, .34));
}

.download,
.usage,
.install,
.faq {
  width: min(calc(100% - 44px), var(--max));
  margin-left: auto;
  margin-right: auto;
}

.download {
  padding: 100px 0 140px;
}

.download-heading {
  max-width: 850px;
}

.download-heading h2,
.route-copy h2,
.usage-heading h2,
.shared-copy h2,
.install-copy h2,
.trust-title h2,
.faq-heading h2 {
  margin: 0;
  font-size: clamp(44px, 5.3vw, 76px);
  line-height: 1.07;
  letter-spacing: -.064em;
  font-weight: 900;
}

.download-heading > p:last-child,
.install-copy > p {
  max-width: 750px;
  margin: 24px 0 0;
  color: rgba(242, 240, 233, .65);
  font-size: 17px;
  line-height: 1.9;
}

.platform-rail {
  margin-top: 82px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 46px;
}

.platform-rail > a {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.platform-rail > a > i {
  color: var(--cyan);
  font-size: 38px;
}

.platform-rail strong {
  margin-top: 25px;
  font-size: 27px;
  letter-spacing: -.04em;
}

.platform-rail span {
  margin-top: 8px;
  color: rgba(242, 240, 233, .58);
  font-size: 14px;
}

.platform-rail b {
  margin-top: 23px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
}

.platform-rail b i {
  transition: transform .2s ease;
}

.platform-rail > a:hover b i {
  transform: translateX(5px);
}

.route {
  padding: 145px max(22px, calc((100vw - var(--max)) / 2));
  display: grid;
  grid-template-columns: 1.03fr .97fr;
  gap: 100px;
  align-items: center;
  color: var(--graphite);
  background: var(--cyan);
}

.route-copy > p {
  max-width: 750px;
  margin: 24px 0 0;
  color: rgba(16, 23, 25, .72);
  font-size: 17px;
  line-height: 1.9;
}

.route-steps {
  margin: 46px 0 0;
  padding: 0;
  display: grid;
  gap: 31px;
  list-style: none;
}

.route-steps li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
}

.route-steps li > span {
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .12em;
}

.route-steps h3 {
  margin: 0 0 8px;
  font-size: 23px;
}

.route-steps p {
  margin: 0;
  color: rgba(16, 23, 25, .68);
  line-height: 1.8;
}

.route-media {
  margin: 0;
  min-height: 560px;
  display: grid;
  place-items: center;
  background: var(--fog);
  clip-path: ellipse(49% 46% at 50% 50%);
}

.route-media img {
  width: 88%;
  max-height: 520px;
  object-fit: contain;
}

.usage {
  padding: 145px 0 150px;
}

.usage-heading {
  max-width: 850px;
}

.usage-flow {
  margin-top: 82px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 72px;
}

.usage-flow article > span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .15em;
}

.usage-flow h3 {
  margin: 11px 0 11px;
  font-size: 26px;
}

.usage-flow p {
  margin: 0;
  color: rgba(242, 240, 233, .66);
  line-height: 1.85;
}

.shared {
  padding: 135px max(22px, calc((100vw - var(--max)) / 2));
  display: grid;
  grid-template-columns: .94fr 1.06fr;
  gap: 100px;
  align-items: center;
  color: var(--cream);
  background: var(--orange);
}

.shared-media {
  margin: 0;
  min-height: 560px;
  display: grid;
  place-items: center;
  background: var(--cyan-soft);
  clip-path: polygon(7% 1%, 93% 4%, 100% 43%, 87% 98%, 15% 100%, 0 62%);
}

.shared-media img {
  width: 88%;
  max-height: 525px;
  object-fit: contain;
}

.shared-copy > p {
  max-width: 750px;
  margin: 24px 0 0;
  color: rgba(255, 249, 237, .75);
  font-size: 17px;
  line-height: 1.9;
}

.shared-notes {
  margin-top: 41px;
  display: grid;
  gap: 24px;
}

.shared-notes p {
  margin: 0;
  display: grid;
  grid-template-columns: 125px 1fr;
  gap: 18px;
  color: rgba(255, 249, 237, .76);
  line-height: 1.75;
}

.shared-notes strong {
  color: var(--cyan-soft);
}

.shared-copy > a {
  margin-top: 34px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--cyan-soft);
  font-weight: 900;
}

.shared-copy > a i {
  transition: transform .2s ease;
}

.shared-copy > a:hover i {
  transform: translateX(5px);
}

.install {
  padding: 145px 0 150px;
  display: grid;
  grid-template-columns: .96fr 1.04fr;
  gap: 100px;
  align-items: center;
}

.install-notes {
  margin-top: 41px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px 45px;
}

.install-notes p {
  margin: 0;
}

.install-notes strong,
.install-notes span {
  display: block;
}

.install-notes strong {
  color: var(--cyan);
  font-size: 22px;
}

.install-notes span {
  margin-top: 9px;
  color: rgba(242, 240, 233, .65);
  line-height: 1.8;
}

.install-media {
  margin: 0;
  min-height: 560px;
  display: grid;
  place-items: center;
  background: var(--orange-soft);
  clip-path: circle(48% at 50% 50%);
}

.install-media img {
  width: 88%;
  max-height: 520px;
  object-fit: contain;
}

.trust {
  padding: 135px max(22px, calc((100vw - var(--max)) / 2));
  display: grid;
  grid-template-columns: .76fr 1.24fr;
  gap: 105px;
  color: var(--graphite);
  background: var(--fog);
}

.trust-flow {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 46px 60px;
}

.trust-flow p {
  margin: 0;
}

.trust-flow strong,
.trust-flow span {
  display: block;
}

.trust-flow strong {
  font-size: 24px;
}

.trust-flow span {
  margin-top: 9px;
  color: rgba(16, 23, 25, .68);
  line-height: 1.8;
}

.faq {
  padding: 145px 0 155px;
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 120px;
  align-items: start;
}

.faq-heading {
  position: sticky;
  top: 95px;
}

.faq-list {
  display: grid;
  gap: 34px;
}

.faq-list summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
  list-style: none;
  font-size: 20px;
  line-height: 1.55;
  font-weight: 900;
}

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

.faq-list summary i {
  margin-top: 8px;
  color: var(--cyan);
  font-size: 14px;
  transition: transform .2s ease;
}

.faq-list details[open] summary i {
  transform: rotate(45deg);
}

.faq-list p {
  max-width: 760px;
  margin: 14px 0 0;
  color: rgba(242, 240, 233, .65);
  line-height: 1.85;
}

.final-cta {
  min-height: 500px;
  padding: 90px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--graphite);
  background: var(--cyan);
}

.final-cta > p {
  margin: 0 0 17px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .16em;
}

.final-cta h2 {
  max-width: 930px;
  margin: 0;
  font-size: clamp(52px, 7vw, 98px);
  line-height: 1;
  letter-spacing: -.075em;
  font-weight: 900;
}

.final-cta a {
  min-height: 62px;
  margin-top: 40px;
  padding: 0 34px;
  color: var(--cream);
  background: var(--graphite);
  font-size: 17px;
}

.final-cta > span {
  margin-top: 19px;
  color: rgba(16, 23, 25, .62);
  font-size: 13px;
}

.footer {
  width: 100%;
  min-height: 126px;
  padding: 0 max(22px, calc((100vw - var(--max)) / 2));
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 38px;
  color: var(--cream);
  background: var(--orange);
  font-size: 13px;
}

.footer-brand {
  color: var(--cream);
  font-size: 18px;
}

.footer-brand img {
  width: 31px;
  height: 31px;
}

@media (max-width: 1040px) {
  .header {
    grid-template-columns: auto 1fr auto auto;
    gap: 16px;
  }

  .nav {
    display: none;
    position: fixed;
    inset: 78px 0 auto;
    width: 100%;
    padding: 35px 24px 39px;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    color: var(--paper);
    background: rgba(16, 23, 25, .98);
    backdrop-filter: blur(18px);
  }

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

  .menu-toggle {
    display: grid;
    place-items: center;
  }

  .header-download {
    justify-self: end;
  }

  .hero {
    grid-template-columns: auto 1fr;
    min-height: auto;
    padding-top: 55px;
  }

  .hero-media {
    grid-column: 1 / -1;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
  }

  .route,
  .shared,
  .install,
  .trust,
  .faq {
    grid-template-columns: 1fr;
  }

  .route-media,
  .shared-media,
  .install-media {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
  }

  .faq-heading {
    position: static;
  }
}

@media (max-width: 720px) {
  .header {
    width: min(calc(100% - 28px), var(--max));
    min-height: 76px;
    grid-template-columns: auto 1fr auto;
  }

  .header-download {
    display: none;
  }

  .hero,
  .download,
  .usage,
  .install,
  .faq {
    width: min(calc(100% - 30px), var(--max));
  }

  .hero {
    margin-top: 0;
    margin-bottom: 35px;
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .hero-number {
    display: none;
  }

  .hero h1 {
    font-size: clamp(50px, 14.5vw, 70px);
  }

  .lead {
    margin-top: 25px;
    font-size: 16px;
    line-height: 1.85;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }

  .main-download {
    width: 100%;
  }

  .text-link {
    justify-content: center;
  }

  .hero-media {
    min-height: 390px;
  }

  .hero-media::before {
    width: 100%;
  }

  .hero-media::after {
    width: 110px;
    height: 110px;
  }

  .hero-media img {
    max-height: 370px;
  }

  .download,
  .usage,
  .install,
  .faq {
    padding-top: 84px;
    padding-bottom: 92px;
  }

  .platform-rail {
    margin-top: 55px;
    grid-template-columns: 1fr;
    gap: 49px;
  }

  .route {
    padding-top: 95px;
    padding-bottom: 100px;
    gap: 48px;
  }

  .route-media,
  .shared-media,
  .install-media {
    min-height: 360px;
  }

  .usage-flow {
    margin-top: 58px;
    grid-template-columns: 1fr;
    gap: 47px;
  }

  .shared {
    padding-top: 90px;
    padding-bottom: 95px;
    gap: 48px;
  }

  .shared-notes p {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .install {
    gap: 48px;
  }

  .install-notes {
    grid-template-columns: 1fr;
    gap: 37px;
  }

  .trust {
    padding-top: 90px;
    padding-bottom: 95px;
    gap: 52px;
  }

  .trust-flow {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .faq {
    gap: 52px;
  }

  .faq-list summary {
    font-size: 18px;
  }

  .final-cta {
    min-height: 430px;
    padding: 75px 20px;
  }

  .final-cta h2 {
    font-size: clamp(48px, 13.8vw, 68px);
  }

  .footer {
    padding: 36px 20px;
    grid-template-columns: 1fr;
    gap: 13px;
    text-align: center;
  }

  .footer-brand {
    justify-content: center;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}