:root {
  --ink: #0f1d3b;
  --muted: #64708a;
  --brand: #4e63f7;
  --brand-dark: #3448d9;
  --brand-soft: #eef1ff;
  --line: #e7ebf4;
  --surface: #ffffff;
  --surface-soft: #f7f9fc;
  --green: #38c7a3;
  --shadow: 0 24px 70px rgba(28, 46, 105, .15);
  --radius-lg: 28px;
  --radius-md: 18px;
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(78, 99, 247, .45); outline-offset: 4px; }
.container { width: min(var(--max-width), calc(100% - 48px)); margin: 0 auto; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 20; padding: 10px 14px; color: #fff; background: var(--ink); border-radius: 8px; }
.skip-link:focus { top: 16px; }

.site-header { position: absolute; inset: 0 0 auto; z-index: 10; color: #fff; }
.site-header.is-light { position: relative; color: var(--ink); background: #fff; border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 82px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 20px; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: #fff; background: linear-gradient(145deg, #7c8bff, #4e63f7); border-radius: 11px; box-shadow: 0 8px 18px rgba(78, 99, 247, .28); }
.brand-mark svg { width: 19px; height: 19px; }
.nav-links { display: flex; align-items: center; gap: 31px; font-size: 14px; font-weight: 600; }
.nav-links a { opacity: .78; transition: opacity .2s ease, color .2s ease; }
.nav-links a:hover, .nav-links a[aria-current="page"] { opacity: 1; color: var(--brand); }
.hero .nav-links a:hover, .hero .nav-links a[aria-current="page"] { color: #fff; }
.nav-cta { display: inline-flex !important; align-items: center; justify-content: center; min-height: 42px; padding: 0 18px; color: var(--ink) !important; background: #fff; border-radius: 999px; opacity: 1 !important; }
.menu-button { display: none; width: 44px; height: 44px; padding: 9px; color: inherit; background: transparent; border: 0; cursor: pointer; }

.hero { position: relative; overflow: hidden; color: #fff; background: #0e1b3a; }
.hero::before, .hero::after { position: absolute; content: ""; border-radius: 999px; filter: blur(5px); pointer-events: none; }
.hero::before { width: 620px; height: 620px; top: -230px; right: -160px; background: rgba(78, 99, 247, .38); }
.hero::after { width: 380px; height: 380px; bottom: -200px; left: -100px; background: rgba(56, 199, 163, .19); }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 70px; min-height: 720px; padding-top: 98px; padding-bottom: 96px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 20px; color: #aebaff; font-size: 13px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.eyebrow::before { width: 24px; height: 2px; content: ""; background: var(--green); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 580px; margin-bottom: 23px; font-size: clamp(44px, 5vw, 70px); line-height: 1.08; letter-spacing: -.055em; }
.hero-copy > p:not(.eyebrow) { max-width: 520px; margin-bottom: 34px; color: #c2cbe4; font-size: 18px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 13px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 50px; padding: 0 21px; border: 1px solid transparent; border-radius: 12px; font-size: 14px; font-weight: 800; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--brand); box-shadow: 0 12px 28px rgba(78, 99, 247, .25); }
.button-primary:hover { background: var(--brand-dark); box-shadow: 0 15px 34px rgba(78, 99, 247, .35); }
.button-ghost { color: #fff; border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.08); }
.button-light { color: var(--brand-dark); background: #fff; }
.button svg { width: 17px; height: 17px; }
.hero-note { display: flex; align-items: center; gap: 10px; margin-top: 25px; color: #9eabc8; font-size: 13px; }
.hero-note span { display: inline-block; width: 7px; height: 7px; background: var(--green); border-radius: 50%; box-shadow: 0 0 0 5px rgba(56,199,163,.13); }

.product-stage { position: relative; min-height: 500px; }
.glow { position: absolute; inset: 15% 2% 5%; background: radial-gradient(circle, rgba(99,119,255,.42), transparent 65%); }
.phone { position: absolute; right: 8%; bottom: 13px; width: 265px; height: 510px; padding: 10px; background: #101b32; border: 5px solid #283654; border-radius: 38px; box-shadow: 20px 24px 50px rgba(0,0,0,.3); transform: rotate(4deg); }
.phone::before { position: absolute; left: 50%; top: 7px; width: 84px; height: 22px; content: ""; background: #0d1730; border-radius: 0 0 18px 18px; transform: translateX(-50%); z-index: 2; }
.phone-screen { height: 100%; padding: 23px 13px 14px; overflow: hidden; background: #f6f7fb; border-radius: 27px; color: var(--ink); }
.app-top { display: flex; align-items: center; justify-content: space-between; margin: 5px 1px 18px; font-size: 12px; font-weight: 800; }
.app-top strong { font-size: 17px; }
.app-icon { display: grid; place-items: center; width: 27px; height: 27px; color: #fff; background: var(--brand); border-radius: 9px; }
.chat-card { display: flex; gap: 9px; align-items: center; padding: 10px; margin-bottom: 7px; background: #fff; border-radius: 14px; box-shadow: 0 4px 12px rgba(30,49,93,.06); }
.avatar { display: grid; place-items: center; flex: 0 0 auto; width: 34px; height: 34px; color: #fff; background: linear-gradient(135deg, #84a7ff, #5c68e9); border-radius: 12px; font-size: 12px; font-weight: 800; }
.avatar.green { background: linear-gradient(135deg, #72dfc2, #38a98f); }
.avatar.gold { background: linear-gradient(135deg, #ffd08c, #f08b55); }
.chat-line { flex: 1; min-width: 0; }
.chat-line strong, .chat-line span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-line strong { font-size: 11px; }
.chat-line span { color: #8490a8; font-size: 9px; }
.time { align-self: flex-start; color: #a0a8b9; font-size: 8px; }
.desktop-card { position: absolute; bottom: 35px; left: 1%; width: 310px; padding: 16px; background: rgba(244,248,255,.95); border: 8px solid rgba(255,255,255,.14); border-radius: 17px; color: var(--ink); box-shadow: 0 22px 55px rgba(0,0,0,.28); transform: rotate(-4deg); }
.desktop-bar { display: flex; gap: 5px; margin-bottom: 14px; }
.desktop-bar i { display: block; width: 7px; height: 7px; background: #ff8f8c; border-radius: 50%; }
.desktop-bar i:nth-child(2) { background: #ffd36b; }.desktop-bar i:nth-child(3) { background: #62d8ae; }
.desktop-content { display: grid; grid-template-columns: 68px 1fr; gap: 12px; }
.desktop-side { height: 130px; background: #e9edfa; border-radius: 8px; }.desktop-main { display: grid; gap: 8px; }.desktop-main b { display: block; width: 54%; height: 8px; background: #ced5ed; border-radius: 5px; }.desktop-main span { display: block; height: 33px; background: #fff; border-radius: 8px; }.desktop-main span:nth-of-type(2) { width: 78%; }

.trust-strip { border-bottom: 1px solid var(--line); background: #fff; }.trust-inner { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; color: #8792a8; font-size: 13px; font-weight: 700; }.trust-inner span { display: flex; align-items: center; gap: 9px; }.trust-inner svg { color: var(--brand); }
.section { padding: 112px 0; }.section-soft { background: var(--surface-soft); }.section-heading { max-width: 650px; margin: 0 auto 52px; text-align: center; }.section-heading .eyebrow { justify-content: center; color: var(--brand); }.section-heading h2 { margin-bottom: 14px; font-size: clamp(32px, 4vw, 48px); line-height: 1.14; letter-spacing: -.045em; }.section-heading p { color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }.feature-card { padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); transition: transform .2s ease, box-shadow .2s ease; }.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }.feature-icon { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 22px; color: var(--brand); background: var(--brand-soft); border-radius: 14px; }.feature-icon svg { width: 22px; height: 22px; }.feature-card h3 { margin-bottom: 9px; font-size: 19px; }.feature-card p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
.split { display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 90px; }.split h2 { margin-bottom: 18px; font-size: clamp(32px, 4vw, 48px); line-height: 1.14; letter-spacing: -.045em; }.split > div > p { color: var(--muted); }.check-list { display: grid; gap: 17px; padding: 0; margin: 30px 0 0; list-style: none; }.check-list li { display: flex; gap: 12px; align-items: flex-start; }.check-list svg { flex: 0 0 auto; margin-top: 4px; color: var(--green); }.check-list strong { display: block; margin-bottom: 2px; font-size: 15px; }.check-list span { display: block; color: var(--muted); font-size: 13px; }
.security-visual { position: relative; min-height: 420px; padding: 30px; background: linear-gradient(145deg, #121f46, #253b84); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }.security-visual::before { position: absolute; width: 360px; height: 360px; top: -80px; right: -70px; content: ""; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 35px rgba(255,255,255,.03), 0 0 0 70px rgba(255,255,255,.025); }.shield { position: absolute; top: 50%; left: 50%; display: grid; place-items: center; width: 150px; height: 170px; color: #fff; background: linear-gradient(160deg, #6d7cff, #4258e4); clip-path: polygon(50% 0, 91% 17%, 85% 66%, 50% 100%, 15% 66%, 9% 17%); transform: translate(-50%, -50%); filter: drop-shadow(0 15px 23px rgba(0,0,0,.22)); }.shield svg { width: 50px; height: 50px; }.secure-badge { position: absolute; right: 29px; bottom: 28px; padding: 11px 14px; color: #c5ffe9; background: rgba(56,199,163,.14); border: 1px solid rgba(56,199,163,.35); border-radius: 11px; font-size: 12px; font-weight: 800; }
.cta { padding: 74px 0; color: #fff; background: linear-gradient(115deg, #3448d9, #6074ff); }.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }.cta h2 { margin-bottom: 9px; font-size: clamp(28px, 4vw, 42px); letter-spacing: -.04em; }.cta p { margin-bottom: 0; color: #d9deff; }.cta .actions { flex: 0 0 auto; }
.site-footer { padding: 54px 0 24px; color: #a8b2c7; background: #0d1835; }.footer-top { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 30px; padding-bottom: 42px; }.footer-brand p { max-width: 240px; margin: 17px 0 0; font-size: 13px; }.footer-column h3 { margin: 0 0 14px; color: #fff; font-size: 13px; }.footer-column a { display: block; width: fit-content; margin: 7px 0; font-size: 13px; }.footer-column a:hover { color: #fff; }.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }.footer-bottom a { margin-left: 18px; }

.page-hero { padding: 90px 0 82px; color: #fff; background: linear-gradient(120deg, #101e43, #3248bb); }.page-hero h1 { margin: 0 0 15px; font-size: clamp(40px, 5vw, 60px); }.page-hero p { max-width: 620px; margin-bottom: 0; color: #d0d8fb; font-size: 18px; }.download-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; }.download-card { padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: 0 12px 38px rgba(27,46,92,.06); }.download-card h2 { margin-bottom: 8px; font-size: 24px; }.download-card > p { color: var(--muted); font-size: 14px; }.platform-list { display: grid; gap: 11px; margin-top: 24px; }.platform { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 17px; border: 1px solid var(--line); border-radius: 14px; }.platform-info { display: flex; align-items: center; gap: 13px; }.platform-icon { display: grid; place-items: center; width: 41px; height: 41px; color: var(--brand); background: var(--brand-soft); border-radius: 12px; }.platform-icon svg { width: 21px; height: 21px; }.platform h3 { margin: 0; font-size: 15px; }.platform p { margin: 2px 0 0; color: var(--muted); font-size: 12px; }.platform .button { min-height: 38px; padding: 0 14px; font-size: 12px; }.download-aside { padding: 28px; color: #fff; background: #13234e; border-radius: var(--radius-md); }.download-aside h2 { margin-bottom: 12px; font-size: 23px; }.download-aside p { color: #bfc9e6; font-size: 14px; }.download-aside ul { display: grid; gap: 12px; padding: 0; margin: 25px 0 0; list-style: none; }.download-aside li { display: flex; gap: 10px; font-size: 13px; }.download-aside li svg { flex: 0 0 auto; color: var(--green); margin-top: 4px; }
.faq { max-width: 800px; margin: 0 auto; }.faq details { padding: 21px 0; border-bottom: 1px solid var(--line); }.faq summary { cursor: pointer; font-weight: 800; }.faq details p { max-width: 680px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }

@media (max-width: 820px) { .container { width: min(var(--max-width), calc(100% - 36px)); }.nav-links { display: none; position: absolute; top: 70px; left: 18px; right: 18px; padding: 10px; background: #fff; border-radius: 16px; box-shadow: var(--shadow); }.nav-links.open { display: grid; gap: 3px; }.nav-links a { padding: 12px; color: var(--ink); }.hero .nav-links a { color: var(--ink); }.nav-cta { color: #fff !important; background: var(--brand) !important; }.menu-button { display: block; }.hero-inner { grid-template-columns: 1fr; gap: 20px; min-height: auto; padding-top: 142px; }.product-stage { min-height: 440px; }.phone { right: 5%; width: 235px; height: 450px; }.desktop-card { left: 0; width: 245px; }.feature-grid { grid-template-columns: repeat(2, 1fr); }.split, .download-layout { grid-template-columns: 1fr; gap: 35px; }.security-visual { min-height: 340px; }.cta-inner { align-items: flex-start; flex-direction: column; }.footer-top { grid-template-columns: 1.5fr 1fr 1fr; }.footer-brand { grid-column: 1 / -1; } }
@media (max-width: 520px) { .container { width: min(var(--max-width), calc(100% - 28px)); }.nav { height: 70px; }.hero-inner { padding-top: 120px; padding-bottom: 60px; }.hero-copy > p:not(.eyebrow) { font-size: 16px; }.actions .button { flex: 1; min-width: 145px; }.product-stage { min-height: 370px; transform: scale(.88); transform-origin: center top; margin-bottom: -34px; }.trust-inner { justify-content: center; flex-wrap: wrap; }.trust-inner span:nth-child(n+3) { display: none; }.section { padding: 76px 0; }.feature-grid { grid-template-columns: 1fr; }.feature-card { padding: 24px; }.footer-top { grid-template-columns: 1fr 1fr; gap: 25px 16px; }.footer-brand { grid-column: 1 / -1; }.footer-bottom { display: block; }.footer-bottom div:last-child { margin-top: 10px; }.footer-bottom a:first-child { margin-left: 0; }.page-hero { padding: 58px 0; }.page-hero p { font-size: 16px; }.download-card, .download-aside { padding: 22px; }.platform { align-items: flex-start; flex-direction: column; }.platform .button { width: 100%; }.cta { padding: 58px 0; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; } }