:root {
  --ink: #11142b;
  --ink-soft: #4f5672;
  --muted: #7b829d;
  --line: #e5e7f2;
  --surface: #ffffff;
  --surface-soft: #f7f8ff;
  --violet: #7047eb;
  --violet-dark: #4e2dbb;
  --blue: #2689f5;
  --green: #2ebd85;
  --gradient: linear-gradient(125deg, #7445ed 0%, #515be9 48%, #258cf4 100%);
  --shadow-sm: 0 12px 34px rgba(36, 40, 90, .08);
  --shadow-lg: 0 30px 90px rgba(47, 42, 111, .16);
  --radius-md: 22px;
  --radius-lg: 34px;
  --shell: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--surface);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(229, 231, 242, .78);
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 20px; font-weight: 850; letter-spacing: -.035em; }
.brand img { object-fit: contain; }
.main-nav { display: flex; align-items: center; gap: 34px; color: var(--ink-soft); font-size: 14px; font-weight: 650; }
.main-nav > a:not(.nav-download):hover { color: var(--violet); }
.nav-download { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 10px 17px; border-radius: 13px; background: var(--gradient); color: #fff; box-shadow: 0 10px 24px rgba(92, 69, 222, .22); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 9px; border: 0; border-radius: 12px; background: var(--surface-soft); cursor: pointer; }
.menu-toggle span { display: block; width: 22px; height: 2px; margin: 4px auto; border-radius: 2px; background: var(--ink); transition: transform .2s, opacity .2s; }

.hero { position: relative; overflow: hidden; padding: 88px 0 0; background: linear-gradient(180deg, #fbfbff 0%, #f4f6ff 100%); }
.hero::before { position: absolute; inset: 0; content: ""; opacity: .36; background-image: radial-gradient(#aeb7df 1px, transparent 1px); background-size: 24px 24px; mask-image: linear-gradient(to bottom, #000, transparent 78%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero-glow-one { width: 520px; height: 520px; right: -160px; top: -120px; background: radial-gradient(circle, rgba(105,79,231,.2), transparent 68%); }
.hero-glow-two { width: 460px; height: 460px; left: -220px; top: 160px; background: radial-gradient(circle, rgba(38,137,245,.13), transparent 70%); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .88fr); align-items: center; gap: 76px; min-height: 600px; }
.hero-copy { padding-bottom: 68px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; padding: 8px 13px; border: 1px solid rgba(112,71,235,.17); border-radius: 999px; background: rgba(255,255,255,.84); color: var(--violet-dark); font-size: 13px; font-weight: 750; box-shadow: var(--shadow-sm); }
.eyebrow span { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(46,189,133,.13); }
.hero h1 { max-width: 650px; margin: 24px 0 20px; font-size: clamp(48px, 5.4vw, 76px); line-height: 1.08; letter-spacing: -.07em; }
.hero h1 em { color: transparent; font-style: normal; background: var(--gradient); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 600px; margin: 0; color: var(--ink-soft); font-size: 18px; line-height: 1.9; }
.hero-actions { margin-top: 34px; }
.primary-button { display: inline-flex; align-items: center; gap: 13px; min-width: 318px; min-height: 68px; padding: 10px 16px 10px 11px; border-radius: 18px; background: var(--gradient); color: #fff; box-shadow: 0 20px 42px rgba(81,72,218,.28); transition: transform .2s, box-shadow .2s; }
.primary-button:hover { transform: translateY(-3px); box-shadow: 0 25px 52px rgba(81,72,218,.34); }
.button-icon { display: grid; place-items: center; width: 48px; height: 48px; flex: 0 0 auto; border-radius: 14px; background: rgba(255,255,255,.17); }
.primary-button > span:nth-child(2) { display: grid; gap: 4px; flex: 1; text-align: left; }
.primary-button strong { font-size: 17px; }
.primary-button small { color: rgba(255,255,255,.76); font-size: 11px; }
.primary-button > svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.trust-row { display: flex; flex-wrap: wrap; gap: 18px 24px; margin: 26px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 13px; font-weight: 650; }
.trust-row li { display: inline-flex; align-items: center; gap: 7px; }
.trust-row svg { width: 18px; height: 18px; padding: 3px; border-radius: 50%; background: rgba(46,189,133,.12); fill: none; stroke: var(--green); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }

.hero-visual { position: relative; display: grid; place-items: center; min-height: 610px; }
.orbit { position: absolute; border: 1px solid rgba(112,71,235,.14); border-radius: 50%; }
.orbit-one { width: 500px; height: 500px; }
.orbit-two { width: 400px; height: 400px; border-style: dashed; animation: spin 24s linear infinite; }
.phone { position: relative; z-index: 2; width: 276px; padding: 10px; border: 1px solid rgba(255,255,255,.9); border-radius: 42px; background: #15172a; box-shadow: 0 38px 90px rgba(23,24,63,.25), inset 0 0 0 1px rgba(255,255,255,.12); transform: rotate(2deg); }
.phone-speaker { position: absolute; z-index: 3; top: 18px; left: 50%; width: 68px; height: 18px; border-radius: 20px; background: #15172a; transform: translateX(-50%); }
.phone-screen { min-height: 526px; overflow: hidden; padding: 40px 18px 18px; border-radius: 33px; background: linear-gradient(180deg, #fefeff 0%, #f2f4ff 100%); }
.app-bar { display: flex; align-items: center; gap: 10px; }
.app-bar img { border-radius: 12px; box-shadow: 0 8px 16px rgba(55,43,133,.16); }
.app-bar div { display: grid; gap: 3px; }
.app-bar strong { font-size: 14px; }
.app-bar span { color: var(--muted); font-size: 10px; }
.map-card { position: relative; height: 155px; margin-top: 18px; overflow: hidden; border-radius: 22px; background: linear-gradient(145deg, #e9e9ff, #e3f2ff); }
.map-card::before, .map-card::after { position: absolute; content: ""; border: 1px solid rgba(93,87,212,.16); border-radius: 50%; }
.map-card::before { width: 190px; height: 190px; left: -55px; top: -62px; }
.map-card::after { width: 140px; height: 140px; right: -32px; bottom: -54px; }
.map-line { position: absolute; height: 1px; background: linear-gradient(90deg, transparent, rgba(112,71,235,.45), transparent); transform-origin: left center; }
.line-a { width: 180px; left: 32px; top: 70px; transform: rotate(-17deg); }
.line-b { width: 160px; left: 48px; top: 42px; transform: rotate(29deg); }
.line-c { width: 130px; left: 63px; top: 108px; transform: rotate(-45deg); }
.node { position: absolute; width: 8px; height: 8px; border: 2px solid #fff; border-radius: 50%; background: var(--violet); box-shadow: 0 0 0 5px rgba(112,71,235,.14); }
.node-a { left: 34px; top: 66px; }.node-b { right: 35px; top: 35px; }.node-c { right: 50px; bottom: 37px; }.node-d { left: 77px; bottom: 28px; background: var(--blue); }
.connect-wrap { display: grid; justify-items: center; margin-top: -33px; position: relative; z-index: 2; }
.connect-ring { display: grid; place-items: center; width: 116px; height: 116px; border: 1px solid rgba(112,71,235,.14); border-radius: 50%; background: rgba(255,255,255,.84); box-shadow: 0 14px 30px rgba(54,42,136,.13); }
.connect-button { display: grid; place-items: center; width: 84px; height: 84px; border-radius: 50%; background: var(--gradient); box-shadow: 0 12px 28px rgba(82,79,219,.3); }
.connect-button svg { width: 35px; height: 35px; fill: none; stroke: #fff; stroke-width: 1.8; stroke-linecap: round; }
.connect-wrap > strong { margin-top: 14px; font-size: 15px; }.connect-wrap > span { margin-top: 5px; color: var(--muted); font-size: 10px; }
.phone-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 20px; }
.phone-stats div { display: grid; gap: 5px; padding: 12px; border: 1px solid #e6e7f2; border-radius: 14px; background: rgba(255,255,255,.8); }
.phone-stats span { color: var(--muted); font-size: 9px; }.phone-stats strong { font-size: 11px; }
.floating-tag { position: absolute; z-index: 4; padding: 11px 15px; border: 1px solid rgba(255,255,255,.9); border-radius: 13px; background: rgba(255,255,255,.9); box-shadow: var(--shadow-sm); color: var(--ink-soft); font-size: 12px; font-weight: 750; backdrop-filter: blur(10px); }
.floating-tag-left { left: 2%; top: 34%; display: flex; align-items: center; gap: 8px; }.floating-tag-right { right: 0; bottom: 24%; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(46,189,133,.15); }

.metric-bar { position: relative; z-index: 4; display: grid; grid-template-columns: repeat(7, auto); align-items: center; justify-content: space-around; min-height: 118px; padding: 22px 34px; border: 1px solid rgba(224,226,240,.9); border-radius: 26px 26px 0 0; background: rgba(255,255,255,.9); box-shadow: 0 -12px 50px rgba(42,44,98,.06); }
.metric-bar div { display: grid; justify-items: center; gap: 7px; }.metric-bar strong { font-size: 24px; letter-spacing: -.04em; }.metric-bar span { color: var(--muted); font-size: 12px; }.metric-bar i { width: 1px; height: 35px; background: var(--line); }

.section { padding: 110px 0; }
.section-heading { max-width: 680px; margin: 0 auto 54px; text-align: center; }
.section-heading > span, .section-kicker { color: var(--violet); font-size: 13px; font-weight: 800; letter-spacing: .13em; }
.section-heading h2, .install-copy h2 { margin: 13px 0 14px; font-size: clamp(34px, 4vw, 50px); line-height: 1.2; letter-spacing: -.05em; }
.section-heading p, .install-copy > p { margin: 0; color: var(--ink-soft); font-size: 16px; line-height: 1.8; }
.benefit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.benefit-card { position: relative; min-height: 310px; padding: 34px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-sm); }
.benefit-card::after { position: absolute; content: ""; right: -70px; bottom: -80px; width: 180px; height: 180px; border-radius: 50%; background: rgba(112,71,235,.04); }
.benefit-card.featured { border-color: transparent; background: linear-gradient(150deg, #24213e 0%, #39346a 100%); color: #fff; transform: translateY(-12px); box-shadow: var(--shadow-lg); }
.benefit-card.featured p { color: rgba(255,255,255,.66); }
.benefit-icon { display: grid; place-items: center; width: 64px; height: 64px; border-radius: 18px; }
.benefit-icon svg { width: 38px; height: 38px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-shield { color: #6844df; background: #eee9ff; }.icon-speed { color: #fff; background: rgba(255,255,255,.1); }.icon-global { color: #1e84ee; background: #e6f3ff; }
.card-index { position: absolute; top: 36px; right: 34px; color: #c8cbe0; font-size: 13px; font-weight: 800; }.featured .card-index { color: rgba(255,255,255,.35); }
.benefit-card h3 { margin: 30px 0 12px; font-size: 23px; }.benefit-card p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.85; }

.install { background: var(--surface-soft); }
.install-grid { display: grid; grid-template-columns: .82fr 1.18fr; align-items: center; gap: 80px; }
.install-copy h2 { max-width: 430px; margin-top: 14px; }.install-copy > p { max-width: 470px; }
.compatibility { display: flex; align-items: center; gap: 14px; margin-top: 30px; padding: 17px; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: var(--shadow-sm); }
.compatibility > img { flex: 0 0 auto; }.compatibility > div { display: grid; gap: 4px; }.compatibility strong { font-size: 13px; }.compatibility span { color: var(--muted); font-size: 11px; }
.step-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.step-card { display: grid; grid-template-columns: 48px minmax(0,1fr) 42px; gap: 17px; align-items: center; min-height: 116px; padding: 20px 22px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s, border-color .2s; }
.step-card:hover { transform: translateX(6px); border-color: rgba(112,71,235,.24); box-shadow: 0 18px 42px rgba(45,48,104,.1); }
.step-number { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: #eeeaff; color: var(--violet); font-size: 14px; font-weight: 850; }
.step-card h3 { margin: 0 0 6px; font-size: 17px; }.step-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.step-card > svg { width: 25px; height: 25px; padding: 9px; box-sizing: content-box; border-radius: 12px; background: var(--surface-soft); fill: none; stroke: var(--violet); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.download-section { padding: 92px 0; background: #fff; }
.download-panel { position: relative; display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 28px; overflow: hidden; padding: 45px 48px; border-radius: var(--radius-lg); background: linear-gradient(130deg, #201c3e 0%, #312863 50%, #274c82 100%); color: #fff; box-shadow: var(--shadow-lg); }
.download-decoration { position: absolute; width: 360px; height: 360px; right: 12%; top: -210px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; box-shadow: 0 0 0 65px rgba(255,255,255,.025), 0 0 0 130px rgba(255,255,255,.018); }
.download-app-icon { position: relative; z-index: 1; border-radius: 25px; box-shadow: 0 18px 42px rgba(0,0,0,.25); }
.download-copy { position: relative; z-index: 1; }.download-copy > span { color: #aeb9ff; font-size: 12px; font-weight: 750; }.download-copy h2 { margin: 8px 0 7px; font-size: clamp(27px, 3vw, 38px); letter-spacing: -.04em; }.download-copy p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; }
.download-button { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 10px; min-height: 56px; padding: 12px 18px; border-radius: 15px; background: #fff; color: #242044; font-size: 14px; font-weight: 800; box-shadow: 0 14px 32px rgba(0,0,0,.18); transition: transform .2s; }.download-button:hover { transform: translateY(-3px); }.download-button > img { width: 23px; height: 23px; }.download-button > svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

.site-footer { border-top: 1px solid var(--line); background: #fff; }.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; min-height: 108px; color: var(--muted); font-size: 12px; }.footer-inner > p { margin: 0; }.footer-inner > span { justify-self: end; }.footer-brand { color: var(--ink); font-size: 17px; }
.mobile-download-bar { display: none; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }.reveal.is-visible { opacity: 1; transform: translateY(0); }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 1020px) {
  .hero { padding-top: 60px; }
  .hero-grid { grid-template-columns: minmax(0,1fr) 390px; gap: 34px; }
  .hero-visual { min-height: 560px; transform: scale(.9); transform-origin: center; }
  .install-grid { gap: 44px; }
  .download-panel { grid-template-columns: auto minmax(0,1fr); }
  .download-button { grid-column: 2; justify-self: start; }
}

@media (max-width: 820px) {
  .shell { width: min(calc(100% - 36px), var(--shell)); }
  .header-inner { min-height: 68px; }
  .menu-toggle { display: block; }
  .main-nav { position: absolute; top: calc(100% + 8px); right: 18px; left: 18px; display: none; align-items: stretch; gap: 5px; padding: 12px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.98); box-shadow: var(--shadow-lg); }
  .main-nav.is-open { display: grid; }
  .main-nav > a { padding: 13px 14px; border-radius: 12px; }.nav-download { justify-content: center; }
  .menu-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }.menu-toggle.is-open span:nth-child(2) { opacity: 0; }.menu-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .hero-grid { grid-template-columns: 1fr; gap: 0; }
  .hero-copy { padding-bottom: 24px; text-align: center; }.eyebrow { margin-inline: auto; }.hero h1, .hero-lead { margin-inline: auto; }.hero-actions { display: flex; justify-content: center; }.trust-row { justify-content: center; }
  .hero-visual { min-height: 550px; }
  .floating-tag-left { left: 10%; }.floating-tag-right { right: 8%; }
  .metric-bar { grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 0; border-radius: 24px 24px 0 0; }.metric-bar i { display: none; }
  .section { padding: 82px 0; }
  .benefit-grid { grid-template-columns: 1fr; max-width: 620px; margin-inline: auto; }.benefit-card { min-height: 240px; }.benefit-card.featured { transform: none; }
  .install-grid { grid-template-columns: 1fr; }.install-copy { text-align: center; }.install-copy h2, .install-copy > p { margin-inline: auto; }.compatibility { max-width: 520px; margin-inline: auto; text-align: left; }
  .download-panel { grid-template-columns: 1fr; justify-items: center; gap: 22px; text-align: center; }.download-button { grid-column: auto; justify-self: center; }
  .footer-inner { grid-template-columns: 1fr; justify-items: center; gap: 14px; padding: 28px 0; text-align: center; }.footer-inner > span { justify-self: center; }
}

@media (max-width: 540px) {
  body { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .brand { font-size: 17px; }.brand img { width: 36px; height: 36px; }
  .hero { padding-top: 48px; }.hero-copy { padding-bottom: 0; }.hero h1 { margin-top: 19px; font-size: clamp(42px, 13vw, 58px); line-height: 1.12; }.hero-lead { font-size: 15px; line-height: 1.8; }
  .primary-button { width: 100%; min-width: 0; }.trust-row { gap: 12px 16px; font-size: 11px; }
  .hero-visual { min-height: 500px; margin-top: 12px; transform: scale(.82); margin-inline: -40px; }.floating-tag-left { left: 3%; }.floating-tag-right { right: 3%; }
  .metric-bar { min-height: 150px; padding: 20px 14px; gap: 20px 10px; border-radius: 20px 20px 0 0; }.metric-bar strong { font-size: 20px; }.metric-bar span { font-size: 10px; }
  .section { padding: 68px 0; }.section-heading { margin-bottom: 36px; }.section-heading h2, .install-copy h2 { font-size: 34px; }.section-heading p, .install-copy > p { font-size: 14px; }
  .benefit-card { min-height: 0; padding: 27px; }.benefit-card h3 { margin-top: 24px; }.benefit-card p { font-size: 13px; }
  .compatibility { padding: 15px; }.step-card { grid-template-columns: 42px minmax(0,1fr); min-height: 108px; padding: 17px; }.step-card > svg { display: none; }.step-number { width: 40px; height: 40px; }
  .download-section { padding: 65px 0; }.download-panel { padding: 34px 20px; border-radius: 25px; }.download-app-icon { width: 78px; height: 78px; border-radius: 21px; }.download-button { width: 100%; justify-content: center; }
  .mobile-download-bar { position: fixed; z-index: 60; right: 0; bottom: 0; left: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 72px; padding: 9px 14px calc(9px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: rgba(255,255,255,.95); box-shadow: 0 -10px 32px rgba(25,28,69,.12); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
  .mobile-download-bar > div { display: flex; align-items: center; gap: 9px; min-width: 0; }.mobile-download-bar > div > img { flex: 0 0 auto; border-radius: 12px; }.mobile-download-bar > div > span { display: grid; gap: 2px; min-width: 0; }.mobile-download-bar strong { overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }.mobile-download-bar small { color: var(--muted); font-size: 10px; }
  .mobile-download-bar > a { flex: 0 0 auto; padding: 11px 16px; border-radius: 12px; background: var(--gradient); color: #fff; font-size: 12px; font-weight: 800; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}