:root {
  --bg: #170f2b;
  --panel: rgba(38, 25, 68, 0.68);
  --line: rgba(212, 181, 255, 0.18);
  --text: #f4fbff;
  --muted: #c2b3d7;
  --blue: #8061ff;
  --cyan: #d3b8ff;
  --purple: #8952ee;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 87% 11%, rgba(149, 83, 239, .52), transparent 29%),
    radial-gradient(circle at 10% 38%, rgba(120, 75, 201, .4), transparent 33%),
    linear-gradient(135deg, #4a3375 0%, #65418d 34%, #39245e 68%, #5d3599 100%);
  font-family: "Noto Sans SC", "PingFang SC", sans-serif;
  background-color: #43286c;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .3;
  background-image: radial-gradient(rgba(227, 194, 255, .42) .7px, transparent .7px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.page-glow { position: fixed; border-radius: 999px; filter: blur(80px); pointer-events: none; opacity: .16; }
.page-glow--one { width: 420px; height: 420px; background: #9b6bea; top: 28%; left: -190px; }
.page-glow--two { width: 480px; height: 480px; background: #8d52dd; right: -240px; bottom: -80px; }

.nav {
  height: 128px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 20;
}
.brand { display: flex; gap: 12px; align-items: center; font-size: 20px; font-weight: 800; letter-spacing: .08em; }
.brand-mark {
  width: clamp(92px, 7vw, 112px);
  height: clamp(92px, 7vw, 112px);
  display: block;
  object-fit: cover;
  border-radius: 22%;
  box-shadow: 0 0 0 1px rgba(105, 215, 255, .18), 0 0 24px rgba(49, 180, 255, .3);
}
.nav-links { display: flex; gap: 38px; color: #9fb0c8; font-size: 14px; }
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: white; }
.nav-cta {
  padding: 11px 20px;
  border: 1px solid rgba(100, 218, 255, .25);
  border-radius: 999px;
  background: rgba(31, 122, 255, .1);
  color: #d8f6ff;
  font-size: 14px;
}

.hero {
  min-height: calc(100vh - 160px);
  display: grid;
  grid-template-columns: .94fr 1.06fr;
  align-items: center;
  gap: 40px;
  padding-block: 46px 72px;
  isolation: isolate;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  top: -128px;
  bottom: 0;
  left: calc(50% - 50vw);
  right: calc(50% - 50vw);
  background:
    linear-gradient(90deg, rgba(50, 31, 85, .65) 0%, rgba(59, 36, 93, .26) 42%, rgba(31, 15, 62, .08) 72%),
    url("hero-digital-earth.png") center / cover no-repeat;
  box-shadow: inset 0 -90px 90px rgba(55, 34, 89, .7);
}
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -128px calc(50% - 50vw) 0;
  background: linear-gradient(180deg, rgba(53, 31, 86, .12), transparent 62%, rgba(55, 34, 89, .9));
  pointer-events: none;
}
.hero-copy { position: relative; z-index: 10; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: #e2cbff; font-size: 14px; font-weight: 600; letter-spacing: .12em; }
.eyebrow span { width: 28px; height: 1px; background: linear-gradient(90deg, transparent, #dcb9ff); }
h1 { margin: 24px 0 24px; font-size: clamp(54px, 6vw, 86px); line-height: 1.12; letter-spacing: -.055em; }
h1 em { font-style: normal; color: transparent; background: linear-gradient(90deg, #f0dcff 0%, #d49aff 47%, #ffb7f5 100%); background-clip: text; -webkit-background-clip: text; }
.lead { max-width: 580px; color: var(--muted); font-size: 18px; line-height: 1.85; }
.hero-actions { margin-top: 38px; display: flex; gap: 12px; position: relative; width: max-content; }
.download-button {
  min-width: 245px;
  height: 70px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 13px;
  border-radius: 18px;
  background: linear-gradient(120deg, #8954f3, #bd64e9);
  box-shadow: 0 18px 50px rgba(117, 58, 210, .4), inset 0 1px rgba(255,255,255,.25);
  transition: transform .2s, box-shadow .2s;
}
.download-button:hover { transform: translateY(-3px); box-shadow: 0 22px 60px rgba(142, 75, 231, .56), inset 0 1px rgba(255,255,255,.25); }
.download-icon { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; background: rgba(255,255,255,.15); }
.download-icon svg { width: 22px; fill: none; stroke: white; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.download-button small { display: block; font-size: 11px; color: rgba(255,255,255,.68); font-weight: 400; }
.download-button strong { display: block; font-size: 17px; margin-top: 2px; }
.download-button .arrow { margin-left: auto; font-size: 19px; }
.trust-row { display: flex; gap: 22px; margin-top: 22px; color: #7087a8; font-size: 12px; }
.trust-row i { color: #4ad8ff; font-style: normal; }

.hero-visual { min-height: 600px; position: relative; display: grid; place-items: center; perspective: 1000px; }
.hero-visual .planet-card,
.hero-visual > .orbit { display: none; }
.planet-card { width: min(490px, 42vw); aspect-ratio: 1; position: relative; display: grid; place-items: center; }
.planet {
  width: 78%;
  aspect-ratio: 1;
  position: relative;
  overflow: hidden;
  border-radius: 50%;
  background:
    radial-gradient(circle at 68% 29%, rgba(149, 248, 255, .8), transparent 6%),
    radial-gradient(circle at 64% 33%, #0c98e7 0, #0753b3 24%, #06225b 52%, #010918 73%);
  box-shadow: inset -52px -40px 85px #000916, inset 20px 12px 34px rgba(108, 239, 255, .3), 0 0 6px #65eaff, 0 0 34px rgba(30, 155, 255, .78), 0 0 100px rgba(38, 95, 255, .35);
  animation: float 6s ease-in-out infinite;
}
.planet::before {
  content: "";
  position: absolute;
  inset: 4%;
  border-radius: 50%;
  background:
    radial-gradient(ellipse at 70% 28%, #b8f5ff 0 2%, transparent 3%),
    radial-gradient(ellipse at 60% 34%, #55c8e6 0 6%, transparent 7%),
    radial-gradient(ellipse at 76% 42%, #2295b6 0 5%, transparent 6%),
    radial-gradient(ellipse at 52% 47%, #2aa4c7 0 8%, transparent 9%),
    radial-gradient(ellipse at 42% 60%, #166b9c 0 7%, transparent 8%);
  filter: blur(2px);
  opacity: .85;
  transform: rotate(-14deg);
}
.planet::after {
  content: "";
  position: absolute;
  inset: -1%;
  border-radius: 50%;
  border: 2px solid rgba(93, 233, 255, .75);
  box-shadow: inset 0 0 22px rgba(48, 195, 255, .7);
}
.planet-shine { position: absolute; width: 34%; height: 70%; top: 4%; right: 10%; border-radius: 50%; background: linear-gradient(90deg, transparent, rgba(154, 245, 255, .22), transparent); transform: rotate(-28deg); filter: blur(9px); }
.orbit-line { position: absolute; width: 108%; height: 34%; border: 1px solid rgba(87, 220, 255, .46); border-radius: 50%; transform: rotate(-14deg); }
.orbit-line--a { top: 36%; }
.orbit-line--b { top: 43%; width: 118%; transform: rotate(18deg); border-color: rgba(110, 94, 255, .5); }
.orbit-line span { position: absolute; top: 50%; left: -3px; width: 7px; height: 7px; border-radius: 50%; background: #8ef7ff; box-shadow: 0 0 14px #6fefff; }
.hero-visual > .orbit { position: absolute; border: 1px solid rgba(72, 176, 255, .1); border-radius: 50%; }
.orbit--outer { width: 570px; height: 570px; }
.orbit--inner { width: 445px; height: 445px; border-style: dashed !important; animation: spin 35s linear infinite; }
.message {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid rgba(138, 217, 255, .16);
  border-radius: 15px;
  background: linear-gradient(135deg, rgba(83, 56, 112, .82), rgba(30, 18, 61, .88));
  box-shadow: 0 15px 40px rgba(0,0,0,.28);
  backdrop-filter: blur(14px);
  animation: float 5s ease-in-out infinite;
}
.message--one { width: 255px; top: 24%; right: 2%; }
.message--two { width: 238px; bottom: 17%; left: 8%; animation-delay: -2.2s; }
.avatar { width: 36px; height: 36px; flex: none; display: grid; place-items: center; border-radius: 11px; background: linear-gradient(135deg, #7f5cff, #4030c9); font-size: 13px; }
.avatar--cyan { background: linear-gradient(135deg, #28d8ed, #137fe9); }
.message small, .message b { display: block; }
.message small { color: #758ba8; font-size: 10px; }
.message b { margin-top: 3px; font-size: 12px; font-weight: 500; }
.message i { margin-left: auto; color: #4ee9c5; font-size: 9px; font-style: normal; }
.signal-pill { position: absolute; right: 7%; bottom: 29%; padding: 7px 11px; border-radius: 999px; background: rgba(7, 25, 50, .8); color: #91a5c0; font-size: 10px; border: 1px solid var(--line); }
.signal-pill span { width: 6px; height: 6px; display: inline-block; margin-right: 5px; border-radius: 50%; background: #31e6b6; box-shadow: 0 0 8px #31e6b6; }

.ios-guide {
  margin-bottom: 28px;
  padding: clamp(28px, 5vw, 52px);
  border: 1px solid rgba(213, 172, 255, .3);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(81, 52, 114, .88), rgba(38, 24, 61, .88));
  box-shadow: 0 24px 70px rgba(20, 8, 40, .2);
}
.ios-guide[hidden] { display: none; }
.ios-guide .section-kicker { margin: 0 0 18px; }
.ios-guide h2 { margin: 0 0 12px; font-size: clamp(27px, 4vw, 42px); }
.ios-guide-intro { margin: 0 0 28px; color: var(--muted); line-height: 1.8; }
.ios-guide ol {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.ios-guide li {
  display: flex;
  gap: 15px;
  padding: 20px;
  border: 1px solid rgba(213, 172, 255, .16);
  border-radius: 18px;
  background: rgba(24, 14, 43, .42);
}
.ios-guide li > span {
  width: 34px;
  height: 34px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: white;
  background: linear-gradient(135deg, #8954f3, #bd64e9);
  font-weight: 700;
}
.ios-guide strong { display: block; margin: 4px 0 6px; }
.ios-guide li p { margin: 0; color: #a99cba; font-size: 13px; line-height: 1.7; }
.ios-guide-note { margin: 20px 0 0; color: #bbaad0; font-size: 12px; line-height: 1.7; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 24px; overflow: hidden; background: rgba(42, 28, 67, .55); backdrop-filter: blur(20px); }
.features article { padding: 28px; display: flex; gap: 15px; border-right: 1px solid var(--line); }
.features article:last-child { border: 0; }
.feature-icon { width: 42px; height: 42px; flex: none; display: grid; place-items: center; border-radius: 13px; color: #74e9ff; background: rgba(42, 133, 255, .12); }
.features h3 { margin: 0 0 7px; font-size: 15px; }
.features p { margin: 0; color: #7186a5; font-size: 12px; line-height: 1.7; }

.content-section {
  position: relative;
  padding: clamp(100px, 11vw, 160px) 0;
  scroll-margin-top: 30px;
}
.content-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.core-section::before { background: radial-gradient(circle at 0 50%, rgba(170, 112, 239, .4), transparent 48%); }
.advantages-section::before { background: radial-gradient(circle at 100% 55%, rgba(153, 90, 225, .38), transparent 44%); }
.use-section::before { background: radial-gradient(circle at 78% 45%, rgba(139, 80, 211, .34), transparent 42%); }
.section-heading { text-align: center; margin-bottom: clamp(44px, 6vw, 76px); }
.section-kicker {
  width: max-content;
  margin: 0 auto 22px;
  padding: 8px 18px;
  border-radius: 999px;
  color: #aa91ff;
  background: rgba(122, 83, 232, .12);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
}
.section-kicker span { display: inline-block; width: 7px; height: 7px; margin-right: 9px; border-radius: 50%; background: #8c5aff; box-shadow: 0 0 10px #8c5aff; }
.section-heading h2 { margin: 0 0 18px; font-size: clamp(34px, 4.5vw, 58px); letter-spacing: -.04em; }
.section-heading p { margin: 0; color: #8490a6; font-size: clamp(14px, 1.45vw, 18px); font-weight: 500; }
.card-grid { display: grid; gap: 20px; }
.card-grid--three { grid-template-columns: repeat(3, 1fr); }
.card-grid--two { grid-template-columns: repeat(2, 1fr); }
.card-grid--four { grid-template-columns: repeat(4, 1fr); }
.info-card, .detail-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(151, 161, 185, .13);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(72, 48, 102, .78), rgba(36, 23, 55, .77));
  transition: border-color .25s, transform .25s, background .25s;
}
.info-card::after, .detail-card::after {
  content: "";
  position: absolute;
  width: 150px;
  height: 150px;
  right: -90px;
  bottom: -90px;
  border-radius: 50%;
  background: #7448db;
  filter: blur(55px);
  opacity: 0;
  transition: opacity .25s;
}
.info-card:hover, .detail-card:hover { transform: translateY(-5px); border-color: rgba(215, 171, 255, .5); background: linear-gradient(135deg, rgba(101, 64, 139, .9), rgba(48, 29, 70, .86)); }
.info-card:hover::after, .detail-card:hover::after { opacity: .25; }
.featured-card { border-color: rgba(213, 172, 255, .38); background: linear-gradient(135deg, rgba(89, 57, 124, .86), rgba(43, 27, 65, .82)); }
.info-card { min-height: 240px; padding: 38px; }
.info-card .card-icon { margin-bottom: 35px; }
.info-card h3, .detail-card h3 { margin: 0 0 14px; font-size: 19px; }
.info-card p, .detail-card p { margin: 0; color: #8d94a5; font-size: 14px; line-height: 1.8; }
.card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  flex: none;
  border-radius: 15px;
  color: #9367ff;
  background: rgba(116, 73, 220, .16);
  font-size: 22px;
  font-weight: 600;
}
.detail-card { min-height: 150px; padding: 34px; display: flex; align-items: center; gap: 25px; }
.card-grid--four .info-card { min-height: 280px; padding: 38px 30px; }
.bottom-cta {
  margin-top: 30px;
  margin-bottom: 80px;
  padding: 30px 34px;
  display: flex;
  align-items: center;
  gap: 24px;
  border: 1px solid rgba(92, 197, 255, .17);
  border-radius: 24px;
  background: linear-gradient(110deg, rgba(111, 68, 158, .48), rgba(104, 55, 158, .42));
}
.bottom-cta img { width: clamp(70px, 7vw, 96px); height: clamp(70px, 7vw, 96px); object-fit: cover; border-radius: 22%; box-shadow: 0 0 30px rgba(36, 155, 255, .35); }
.bottom-cta div { flex: 1; }
.bottom-cta span { color: #75dfff; font-size: 12px; }
.bottom-cta h2 { margin: 6px 0 0; font-size: clamp(20px, 2.5vw, 32px); }
.bottom-cta > a { padding: 15px 22px; border-radius: 14px; background: linear-gradient(120deg, #1279ff, #6754f4); font-size: 14px; font-weight: 700; }
.bottom-cta b { margin-left: 8px; }
footer { padding-block: 32px 38px; display: flex; justify-content: space-between; color: #475d7c; font-size: 11px; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 55px; }
  .hero::before { background-position: 68% center; }
  .hero-copy { text-align: center; }
  .eyebrow, .hero-actions, .trust-row { justify-content: center; margin-inline: auto; }
  .lead { margin-inline: auto; }
  .hero-visual { min-height: 520px; margin-top: -20px; }
  .planet-card { width: min(480px, 76vw); }
  .features { grid-template-columns: 1fr; }
  .ios-guide ol { grid-template-columns: 1fr; }
  .features article { border-right: 0; border-bottom: 1px solid var(--line); }
  .card-grid--three, .card-grid--four { grid-template-columns: repeat(2, 1fr); }
  .card-grid--two { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  body { background-color: #382158; }
  .shell { width: calc(100% - 32px); }
  .nav {
    height: 94px;
    gap: 12px;
  }
  .brand {
    min-width: 0;
    gap: 10px;
    font-size: 19px;
  }
  .brand-mark { width: 70px; height: 70px; flex: none; }
  .nav-cta { display: none; }
  .hero {
    display: block;
    width: 100%;
    min-height: 0;
    padding: clamp(46px, 11vw, 64px) 0 54px;
  }
  .hero::before {
    top: -94px;
    bottom: 0;
    background:
      linear-gradient(180deg, rgba(28, 13, 61, .18) 0%, rgba(47, 25, 79, .38) 42%, rgba(55, 32, 88, .92) 86%, #382258 100%),
      linear-gradient(90deg, rgba(44, 24, 78, .3), transparent 70%),
      url("hero-digital-earth-mobile.jpg") 61% center / cover no-repeat;
  }
  .hero::after { top: -94px; }
  .hero-copy {
    width: 100%;
    min-width: 0;
    margin: 0 auto;
    text-align: center;
  }
  .eyebrow {
    justify-content: center;
    font-size: 12px;
    letter-spacing: .08em;
  }
  h1 { font-size: clamp(43px, 13vw, 62px); margin-top: 18px; }
  .hero h1 {
    max-width: 100%;
    margin: 20px auto 22px;
    font-size: clamp(40px, 10.8vw, 50px);
    line-height: 1.16;
    letter-spacing: -.065em;
    white-space: normal;
    overflow-wrap: normal;
    word-break: keep-all;
  }
  .lead {
    width: 100%;
    max-width: 390px;
    margin: 0 auto;
    padding-inline: 3px;
    font-size: 14px;
    line-height: 1.75;
  }
  .hero-actions {
    width: 100%;
    max-width: 420px;
    margin: 28px auto 0;
    flex-direction: column;
    gap: 12px;
  }
  .download-button {
    width: 100%;
    max-width: none;
  }
  .download-button { min-width: 0; }
  .trust-row {
    width: 100%;
    margin-top: 18px;
    gap: 10px 16px;
    flex-wrap: wrap;
    font-size: 10px;
  }
  .hero-visual { display: none; }
  .content-section { padding: 82px 0; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2 { font-size: 32px; }
  .section-heading p { max-width: 330px; margin-inline: auto; line-height: 1.75; }
  .card-grid--three, .card-grid--two, .card-grid--four { grid-template-columns: 1fr; }
  .info-card, .card-grid--four .info-card { min-height: auto; padding: 28px; }
  .info-card .card-icon { margin-bottom: 24px; }
  .detail-card { min-height: auto; padding: 26px; align-items: flex-start; gap: 17px; }
  .detail-card .card-icon { width: 42px; height: 42px; }
  .bottom-cta { padding: 25px; flex-wrap: wrap; }
  .bottom-cta img { width: 74px; height: 74px; }
  .bottom-cta div { flex-basis: calc(100% - 100px); }
  .bottom-cta > a { width: 100%; text-align: center; }
  footer { padding-bottom: 24px; }
}

@media (min-width: 1600px) {
  .shell { width: min(1420px, calc(100% - 100px)); }
  .nav { height: 140px; }
  .brand-mark { width: 124px; height: 124px; }
  .hero::before { top: -140px; }
  .hero::after { top: -140px; }
  .hero { min-height: 820px; }
  .info-card { min-height: 280px; padding: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}