:root {
  --ink: #072034;
  --muted: #5d6d76;
  --teal: #0f9f8d;
  --aqua: #58f0cf;
  --jade: #dffdf2;
  --sun: #ffd35b;
  --coral: #ff7b6b;
  --night: #061c23;
  --paper: #f7fffb;
  --line: rgba(7, 32, 52, 0.12);
  --shadow: 0 26px 70px rgba(0, 76, 72, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(88, 240, 207, 0.38), transparent 28rem),
    radial-gradient(circle at 90% 0%, rgba(255, 211, 91, 0.24), transparent 22rem),
    linear-gradient(180deg, #f8fffb 0%, #ecfff7 42%, #ffffff 100%);
  font-family: Avenir Next, Trebuchet MS, Verdana, sans-serif;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 42px;
  width: min(1180px, calc(100% - 32px));
  margin: 18px auto 0;
  padding: 16px 22px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  box-shadow: 0 18px 44px rgba(7, 32, 52, 0.1);
  backdrop-filter: blur(18px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(15, 159, 141, 0.24);
}

.brand span {
  font-size: 30px;
}

.nav-links,
.site-footer nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.nav-links a,
.site-footer nav a {
  padding: 15px 22px;
  border-radius: 999px;
  color: rgba(7, 32, 52, 0.72);
  font-size: 20px;
  font-weight: 800;
}

.nav-links a:hover,
.site-footer nav a:hover {
  background: rgba(15, 159, 141, 0.12);
  color: var(--ink);
}

.site-footer nav a {
  padding: 12px 18px;
  font-size: 17px;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  align-items: center;
  gap: 44px;
  width: min(1180px, calc(100% - 32px));
  min-height: calc(100vh - 92px);
  margin: 0 auto;
  padding: 48px 0 38px;
}

.hero::before {
  position: absolute;
  right: 4%;
  bottom: 8%;
  width: 420px;
  height: 420px;
  content: "";
  background: conic-gradient(from 140deg, rgba(15, 159, 141, 0.16), rgba(255, 211, 91, 0.26), rgba(255, 123, 107, 0.18), rgba(15, 159, 141, 0.16));
  border-radius: 50%;
  filter: blur(8px);
  opacity: 0.75;
}

.hero-copy,
.hero-stage,
.section-heading,
.feature,
.download-card,
.page-main {
  position: relative;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1,
.legal-placeholder h1 {
  margin: 0;
  font-family: Georgia, Times New Roman, serif;
  font-size: clamp(68px, 13vw, 156px);
  line-height: 0.86;
  letter-spacing: 0;
}

.hero-text {
  max-width: 570px;
  margin: 30px 0 0;
  color: #35515b;
  font-size: clamp(19px, 2vw, 26px);
  line-height: 1.45;
  font-weight: 700;
}

.hero-actions,
.download-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.store-button {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 174px;
  padding: 12px 18px 13px;
  color: white;
  background: var(--night);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  box-shadow: 0 16px 34px rgba(7, 32, 52, 0.18);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.store-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 44px rgba(7, 32, 52, 0.24);
}

.store-button span,
.store-button strong {
  display: block;
}

.store-icon {
  flex: 0 0 auto;
  width: 27px;
  height: 27px;
}

.store-copy {
  min-width: 0;
}

.store-button span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 800;
}

.store-button strong {
  margin-top: 2px;
  font-size: 20px;
  line-height: 1;
}

.store-button-light {
  color: var(--ink);
  background: white;
  border-color: var(--line);
}

.store-button-light span {
  color: rgba(7, 32, 52, 0.62);
}

.hero-stage {
  min-height: 660px;
}

.phone {
  position: absolute;
  width: min(46vw, 360px);
  border-radius: 36px;
  box-shadow: var(--shadow);
}

.phone-main {
  right: 4%;
  top: 0;
  z-index: 2;
}

.phone-side {
  left: 2%;
  bottom: 0;
  z-index: 1;
  transform: rotate(-8deg) scale(0.86);
  opacity: 0.92;
}

.intro-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  width: min(1180px, calc(100% - 32px));
  margin: 8px auto 94px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 18px 54px rgba(15, 159, 141, 0.1);
}

.intro-band div {
  padding: 30px;
  background: rgba(255, 255, 255, 0.74);
}

.intro-band span,
.contact-grid span {
  display: block;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro-band strong {
  display: block;
  margin-top: 8px;
  font-size: 22px;
  line-height: 1.22;
}

.feature-section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.section-heading h2,
.download-card h2 {
  margin: 0;
  font-family: Georgia, Times New Roman, serif;
  font-size: clamp(34px, 4.4vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.download-card h2 {
  margin-bottom: 8px;
  font-size: clamp(32px, 4vw, 54px);
}

.feature {
  display: grid;
  grid-template-columns: 0.88fr 1fr;
  align-items: center;
  gap: 54px;
  padding: 64px 0;
  border-top: 1px solid var(--line);
}

.feature-right .feature-copy {
  order: 2;
}

.feature-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  color: var(--night);
  background: var(--sun);
  border-radius: 50%;
  font-weight: 900;
  box-shadow: 0 10px 26px rgba(255, 179, 45, 0.22);
}

.feature h3 {
  margin: 24px 0 16px;
  font-family: Georgia, Times New Roman, serif;
  font-size: clamp(30px, 3.8vw, 50px);
  line-height: 1.08;
}

.feature p,
.page-hero p,
.legal-placeholder p,
.download-card p,
.contact-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
  font-weight: 700;
}

.screen-frame {
  justify-self: center;
  width: min(100%, 365px);
  padding: 13px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(223, 253, 242, 0.68));
  border: 1px solid rgba(7, 32, 52, 0.12);
  border-radius: 42px;
  box-shadow: var(--shadow);
}

.screen-frame img {
  width: 100%;
  border-radius: 30px;
}

.download-section {
  width: min(1180px, calc(100% - 32px));
  margin: 54px auto 96px;
}

.download-card {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 34px;
  color: white;
  background:
    linear-gradient(135deg, rgba(7, 32, 52, 0.96), rgba(10, 95, 92, 0.94)),
    var(--night);
  border-radius: 34px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(7, 32, 52, 0.22);
}

.download-card > img {
  width: 132px;
  height: 132px;
  border-radius: 34px;
  box-shadow: 0 18px 44px rgba(88, 240, 207, 0.18);
}

.download-card p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 17px;
  line-height: 1.35;
}

.download-card .eyebrow {
  color: var(--aqua);
}

.download-card .download-actions {
  justify-content: flex-end;
  margin-top: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 46px;
  border-top: 1px solid var(--line);
}

.site-footer > div {
  max-width: 620px;
}

.site-footer p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 16px;
  font-weight: 700;
}

.site-footer .copyright {
  color: rgba(93, 109, 118, 0.76);
  font-size: 14px;
  font-weight: 650;
}

.site-footer .company-cn {
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
}

.footer-brand {
  font-size: 31px;
}

.site-footer nav {
  justify-content: flex-end;
  flex: 0 0 auto;
  flex-wrap: nowrap;
  max-width: none;
  white-space: nowrap;
}

.page-main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 92px 0 110px;
}

.page-hero,
.legal-placeholder {
  max-width: 820px;
}

.page-hero h1,
.legal-placeholder h1 {
  font-size: clamp(36px, 4.6vw, 58px);
  line-height: 1.08;
}

.page-hero p,
.legal-placeholder p {
  margin-top: 24px;
  max-width: 720px;
}

.page-hero h1 {
  max-width: 760px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 54px;
}

.contact-grid article {
  min-height: 150px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(15, 159, 141, 0.08);
}

.contact-grid a,
.contact-grid p {
  display: block;
  margin-top: 14px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 900;
}

.contact-grid .contact-cn {
  margin-top: 10px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.45;
}

.contact-grid .wide {
  grid-column: 1 / -1;
}

.legal-placeholder {
  padding: 52px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: 0 18px 54px rgba(15, 159, 141, 0.1);
}

.legal-main {
  width: min(980px, calc(100% - 32px));
  padding-top: 72px;
}

.legal-doc {
  padding: clamp(26px, 5vw, 64px);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: 0 18px 54px rgba(15, 159, 141, 0.1);
}

.legal-doc .legal-title {
  margin-top: 0;
  font-family: Georgia, Times New Roman, serif;
  font-size: clamp(30px, 3.8vw, 44px);
  line-height: 1.12;
}

.legal-doc h1,
.legal-doc h2,
.legal-doc h3,
.legal-doc h4 {
  color: var(--ink);
  letter-spacing: 0;
}

.legal-doc h1 {
  margin: 46px 0 14px;
  font-family: Georgia, Times New Roman, serif;
  font-size: clamp(28px, 3.2vw, 38px);
  line-height: 1.14;
}

.legal-doc h2 {
  margin: 34px 0 12px;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.18;
}

.legal-doc h3 {
  margin: 26px 0 9px;
  color: #0c7e73;
  font-size: 19px;
  line-height: 1.25;
}

.legal-doc h4 {
  margin: 24px 0 8px;
  font-size: 18px;
}

.legal-doc p,
.legal-doc li {
  color: #435861;
  font-size: 16px;
  font-weight: 650;
  line-height: 1.72;
}

.legal-doc p {
  margin: 12px 0;
}

.legal-doc ul {
  margin: 12px 0 22px;
  padding-left: 24px;
}

.legal-doc li + li {
  margin-top: 8px;
}

.legal-doc strong {
  color: var(--ink);
  font-weight: 900;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    gap: 18px;
    border-radius: 26px;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero,
  .feature,
  .download-card {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    padding-top: 58px;
  }

  .hero-stage {
    min-height: 720px;
  }

  .phone {
    width: min(58vw, 315px);
  }

  .phone-main {
    right: 7%;
  }

  .phone-side {
    left: 0;
  }

  .intro-band {
    grid-template-columns: 1fr;
    margin-bottom: 60px;
  }

  .feature-right .feature-copy {
    order: 0;
  }

  .download-card .download-actions {
    justify-content: flex-start;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .site-header {
    position: static;
    width: calc(100% - 22px);
    margin-top: 11px;
  }

  .brand span {
    font-size: 24px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .nav-links a {
    padding: 11px 13px;
    font-size: 16px;
  }

  .hero,
  .intro-band,
  .feature-section,
  .download-section,
  .site-footer,
  .page-main {
    width: calc(100% - 24px);
  }

  .hero h1 {
    font-size: clamp(76px, 26vw, 110px);
  }

  .hero-stage {
    display: flex;
    justify-content: center;
    min-height: 0;
    margin-top: 10px;
  }

  .phone {
    position: relative;
    border-radius: 28px;
  }

  .phone-main {
    width: min(72vw, 276px);
    right: 0;
    top: auto;
  }

  .phone-side {
    display: none;
  }

  .intro-band div,
  .download-card,
  .contact-grid article,
  .legal-placeholder {
    padding: 22px;
  }

  .feature {
    gap: 28px;
    padding: 44px 0;
  }

  .section-heading h2 {
    font-size: clamp(34px, 12vw, 48px);
  }

  .feature h3,
  .download-card h2 {
    font-size: clamp(30px, 10vw, 42px);
  }

  .legal-doc .legal-title {
    font-size: clamp(28px, 9vw, 38px);
  }

  .legal-doc h1 {
    font-size: clamp(26px, 8vw, 34px);
  }

  .download-card > img {
    width: 94px;
    height: 94px;
    border-radius: 26px;
  }

  .store-button {
    width: 100%;
  }

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

  .contact-grid a,
  .contact-grid p {
    font-size: 19px;
    overflow-wrap: anywhere;
  }
}