:root {
  color-scheme: dark;
  --bg: #070a12;
  --bg-soft: #0c1120;
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.085);
  --text: #f7f8fb;
  --muted: #aeb7c8;
  --muted-strong: #cbd2df;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #9d8cff;
  --accent-2: #62dfff;
  --good: #78e6af;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 280px;
  scroll-behavior: smooth;
  background: var(--bg);
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 280px;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(980px 580px at 86% -8%, rgba(98, 223, 255, 0.16), transparent 62%),
    radial-gradient(900px 590px at 14% -4%, rgba(157, 140, 255, 0.21), transparent 60%),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

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

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

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  color: #071018;
  background: #fff;
  transform: translateY(-160%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(1160px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(255, 255, 255, 0.075);
  background: rgba(7, 10, 18, 0.76);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.nav {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: env(safe-area-inset-top, 0px);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
  font-weight: 780;
  letter-spacing: -0.025em;
}

.brandmark {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  place-items: center;
  border-radius: 13px;
  color: #071018;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 36px rgba(98, 223, 255, 0.18);
  font-size: 19px;
  font-weight: 900;
}

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

.brand-title {
  display: block;
  overflow: hidden;
  font-size: 16px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.subbrand {
  display: block;
  margin-top: -2px;
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  font-weight: 620;
  letter-spacing: 0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
}

.official-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 12px;
  border-radius: 12px;
  color: var(--muted-strong);
  font-size: 13px;
  font-weight: 680;
}

.official-link:focus-visible,
.official-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.035);
}

.lang-switch a {
  display: inline-flex;
  min-width: 46px;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 780;
}

.lang-switch a[aria-current="page"] {
  color: #071018;
  background: linear-gradient(110deg, #b3a8ff, #78e5ff);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, 0.92fr);
  gap: clamp(44px, 6vw, 78px);
  align-items: center;
  padding: clamp(64px, 8vw, 104px) 0 clamp(74px, 9vw, 118px);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #dbe0ec;
  background: rgba(255, 255, 255, 0.035);
  font-size: 13px;
  font-weight: 690;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 5px rgba(120, 230, 175, 0.09);
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  max-width: 790px;
  margin: 24px 0 20px;
  font-size: clamp(50px, 7vw, 84px);
  font-weight: 820;
  line-height: 0.98;
  letter-spacing: -0.058em;
}

html[lang^="zh"] h1 {
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(100deg, #ffffff 12%, #bcb5ff 52%, #79e5ff 91%);
  background-clip: text;
  -webkit-background-clip: text;
}

.lead {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 15px;
  font-size: 15px;
  font-weight: 780;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease, box-shadow 0.18s ease;
}

.btn-primary {
  color: #071018;
  background: linear-gradient(100deg, #b2a5ff, #73e4ff);
  box-shadow: 0 16px 46px rgba(92, 190, 255, 0.2);
}

.btn-secondary {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.038);
}

.cta-android {
  border-color: rgba(120, 230, 175, 0.28);
}

html.is-android .cta-android {
  order: -1;
}

.apk-badge {
  display: inline-grid;
  min-width: 34px;
  min-height: 24px;
  place-items: center;
  padding: 0 6px;
  border: 1px solid currentColor;
  border-radius: 7px;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
  opacity: 0.86;
}

.download-note {
  display: flex;
  max-width: 720px;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  margin: 14px 0 0;
  color: #9aa6b9;
  font-size: 12px;
}

.download-note > span:first-child {
  display: inline-grid;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  place-items: center;
  border-radius: 50%;
  color: #071018;
  background: var(--good);
  font-size: 11px;
  font-weight: 900;
}

.download-note code {
  color: #c8d1df;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.96em;
}

.btn:focus-visible,
.lang-switch a:focus-visible,
.brand:focus-visible,
.official-link:focus-visible {
  outline: 3px solid rgba(115, 228, 255, 0.78);
  outline-offset: 3px;
}

.arrow {
  font-size: 18px;
  line-height: 1;
}

.micro {
  max-width: 660px;
  margin-top: 10px;
  color: #818da1;
  font-size: 12px;
}

.device-wrap {
  position: relative;
  display: grid;
  min-width: 0;
  place-items: center;
}

.glow {
  position: absolute;
  width: 84%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(98, 223, 255, 0.21), rgba(157, 140, 255, 0.12) 43%, transparent 70%);
  filter: blur(13px);
}

.device {
  position: relative;
  width: min(420px, 94%);
  aspect-ratio: 0.78;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 39px;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.035));
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}

.screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  border-radius: 30px;
  background:
    linear-gradient(to bottom, rgba(4, 8, 16, 0.08), rgba(4, 8, 16, 0.72)),
    radial-gradient(600px 270px at 60% 10%, rgba(98, 223, 255, 0.24), transparent 54%),
    linear-gradient(150deg, #151c2e, #080c15 64%);
}

.screen-top {
  display: flex;
  justify-content: space-between;
  padding: 24px 22px 0;
  color: #cfd6e4;
  font-size: 12px;
}

.video-frame {
  position: absolute;
  top: 64px;
  right: 18px;
  left: 18px;
  height: 44%;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(157, 140, 255, 0.38), rgba(98, 223, 255, 0.17)),
    linear-gradient(160deg, #27324a, #101625);
}

.video-frame::before {
  position: absolute;
  top: -18px;
  right: -20px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  content: "";
}

.video-label {
  position: absolute;
  top: 18px;
  left: 18px;
  color: #d8deeb;
  font-size: 12px;
}

.subtitle-box {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  padding: 13px 14px;
  border-radius: 13px;
  color: #f5f7fb;
  background: rgba(4, 7, 12, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 13px;
}

.translation {
  margin-top: 4px;
  color: #91e8ff;
}

.language-card {
  position: absolute;
  right: 18px;
  bottom: 26px;
  left: 18px;
  padding: 17px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.055);
}

.language-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
}

.language-row + .language-row {
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.pill {
  flex: 0 0 auto;
  padding: 5px 8px;
  border-radius: 999px;
  color: #09131c;
  background: #7de3ff;
  font-size: 10px;
  font-weight: 820;
}

.section {
  padding: 8px 0 clamp(76px, 9vw, 112px);
}

.section-kicker {
  color: #9da9bd;
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h2 {
  max-width: 760px;
  margin: 11px 0 0;
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 790;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

html[lang^="zh"] h2 {
  line-height: 1.16;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.card {
  min-height: 205px;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.058), rgba(255, 255, 255, 0.025));
}

.icon {
  display: grid;
  width: 44px;
  height: 44px;
  margin-bottom: 27px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 13px;
  color: #dff9ff;
  background: rgba(255, 255, 255, 0.075);
  font-size: 19px;
}

.card h3 {
  margin: 0 0 9px;
  font-size: 18px;
  line-height: 1.28;
}

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

.trust {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  margin-bottom: clamp(76px, 9vw, 108px);
  padding: clamp(26px, 4vw, 38px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(157, 140, 255, 0.12), rgba(98, 223, 255, 0.065));
}

.trust-copy {
  max-width: 760px;
}

.trust strong {
  display: block;
  margin-bottom: 7px;
  font-size: 20px;
  line-height: 1.3;
}

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

.site-footer {
  border-top: 1px solid var(--line);
  color: #7f8ba0;
  font-size: 12px;
}

.footer-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 max(40px, env(safe-area-inset-bottom, 0px));
}

.footer-note {
  max-width: 760px;
  text-align: right;
}


.social-section {
  padding: 8px 0 clamp(76px, 9vw, 112px);
}

.social-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: clamp(24px, 5vw, 68px);
  align-items: end;
}

.social-intro {
  max-width: 500px;
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 15px;
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.social-card {
  display: flex;
  min-width: 0;
  min-height: 112px;
  align-items: center;
  gap: 15px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.062), rgba(255, 255, 255, 0.026));
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.social-icon {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  color: #eafcff;
  background: rgba(255, 255, 255, 0.07);
}

.social-icon svg {
  width: 24px;
  height: 24px;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.social-icon svg rect {
  fill: currentColor;
  stroke: none;
}

.social-icon svg .social-icon-cut {
  fill: #111725;
  stroke: none;
}

.social-copy {
  display: block;
  min-width: 0;
  flex: 1 1 auto;
}

.social-copy strong,
.social-copy span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.social-copy strong {
  font-size: 17px;
  line-height: 1.25;
}

.social-copy span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.social-arrow {
  flex: 0 0 auto;
  color: #a4b0c3;
  font-size: 18px;
}

.social-note {
  margin: 14px 2px 0;
  color: #818da1;
  font-size: 12px;
}

.social-card:focus-visible {
  outline: 3px solid rgba(115, 228, 255, 0.78);
  outline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover {
    transform: translateY(-2px);
  }

  .btn-primary:hover {
    box-shadow: 0 19px 54px rgba(92, 190, 255, 0.27);
  }

  .btn-secondary:hover {
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.065);
  }

  .social-card:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.065);
  }

  .lang-switch a:not([aria-current="page"]):hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.055);
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 54px;
    padding-top: 62px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .device {
    width: min(390px, 82vw);
  }

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

  .card {
    min-height: 0;
  }

  .trust {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .social-heading {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }

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

@media (max-width: 620px) {
  .shell {
    width: min(100% - 28px, 1160px);
  }

  .nav {
    min-height: 66px;
    gap: 10px;
  }

  .brand {
    gap: 9px;
  }

  .brandmark {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
    border-radius: 11px;
    font-size: 17px;
  }

  .subbrand,
  .official-link span {
    display: none;
  }

  .official-link {
    width: 40px;
    min-height: 40px;
    padding: 0;
  }

  .lang-switch a {
    min-width: 42px;
    padding: 0 8px;
  }

  .hero {
    gap: 46px;
    padding: 50px 0 78px;
  }

  h1 {
    margin-top: 20px;
    font-size: clamp(42px, 13.4vw, 59px);
  }

  .lead {
    font-size: 17px;
  }

  .cta-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    min-height: 54px;
  }

  .device {
    width: min(350px, 92vw);
    transform: none;
  }

  .section,
  .social-section {
    padding-bottom: 78px;
  }

  .feature-grid {
    margin-top: 28px;
  }

  .card {
    padding: 24px;
  }

  .social-card {
    min-height: 96px;
    padding: 18px;
  }

  .icon {
    margin-bottom: 22px;
  }

  .trust {
    margin-bottom: 74px;
    border-radius: 22px;
  }

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

  .footer-note {
    text-align: left;
  }
}

@media (max-width: 380px) {
  .shell {
    width: min(100% - 22px, 1160px);
  }

  .brand-title {
    max-width: 88px;
  }

  .nav-actions {
    gap: 6px;
  }

  .lang-switch a {
    min-width: 39px;
    min-height: 35px;
    padding: 0 6px;
  }

  .eyebrow {
    font-size: 12px;
  }

  h1 {
    font-size: 39px;
  }

  .device {
    width: 100%;
  }

  .subtitle-box,
  .language-card {
    right: 14px;
    left: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}