:root {
  color-scheme: light;
  --navy: #102a56;
  --blue: #1769e0;
  --blue-deep: #0d4fbc;
  --blue-soft: #eaf5ff;
  --sky: #65b8f7;
  --coral: #ff6358;
  --ink: #17243a;
  --muted: #647188;
  --line: rgba(22, 59, 107, 0.11);
  --paper: rgba(255, 255, 255, 0.82);
  font-family: "Segoe UI", "Microsoft YaHei UI", "PingFang SC", sans-serif;
  color: var(--ink);
  background: #f7fbff;
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; overflow-x: hidden; background: linear-gradient(180deg, #eef8ff 0, #f8fbff 34%, #fff 100%); }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.page-glow { position: absolute; z-index: -1; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.page-glow-one { top: -260px; right: -180px; width: 720px; height: 720px; background: radial-gradient(circle, rgba(83, 172, 255, 0.23), rgba(83, 172, 255, 0)); }
.page-glow-two { top: 620px; left: -240px; width: 560px; height: 560px; background: radial-gradient(circle, rgba(255, 155, 165, 0.12), rgba(255, 155, 165, 0)); }

.site-header { width: min(1540px, calc(100% - 56px)); min-height: 104px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand img { width: 52px; height: 52px; border-radius: 16px; box-shadow: 0 8px 24px rgba(38, 75, 124, 0.14); }
.brand strong, .brand small { display: block; }
.brand strong { color: var(--navy); font-size: 18px; letter-spacing: -0.02em; }
.brand small { margin-top: 4px; color: #8490a3; font-size: 11px; letter-spacing: 0.12em; }
.site-nav { display: flex; align-items: center; gap: 30px; color: #56647a; font-size: 14px; font-weight: 650; }
.site-nav a { text-decoration: none; }
.site-nav a:hover { color: var(--blue); }
.official-pill { display: inline-flex; align-items: center; gap: 9px; padding: 10px 15px; border: 1px solid rgba(24, 105, 224, 0.12); border-radius: 999px; background: rgba(255, 255, 255, 0.68); color: var(--navy); }
.official-pill i { width: 7px; height: 7px; border-radius: 50%; background: #32b47a; box-shadow: 0 0 0 4px rgba(50, 180, 122, 0.12); }

main { display: block; }
.hero { width: min(1600px, calc(100% - 56px)); min-height: 780px; margin: 0 auto; padding: 80px 0 104px; display: grid; grid-template-columns: minmax(610px, 0.96fr) minmax(660px, 1.04fr); gap: clamp(44px, 5vw, 88px); align-items: center; }
.eyebrow { margin: 0 0 20px; color: var(--blue); font-size: 12px; font-weight: 850; letter-spacing: 0.16em; }
.eyebrow span { margin-right: 9px; padding: 5px 8px; border-radius: 999px; background: var(--coral); color: #fff; font-size: 9px; letter-spacing: 0.1em; }
.hero h1 { margin: 0; color: var(--navy); font-size: clamp(54px, 4.7vw, 74px); line-height: 1.16; letter-spacing: -0.055em; }
.hero h1 span, .hero h1 em { display: block; white-space: nowrap; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero-lead { max-width: 640px; margin: 30px 0 0; color: var(--muted); font-size: 19px; line-height: 1.9; }
.hero-downloads { margin-top: 36px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 11px; }
.hero-download { min-width: 0; min-height: 72px; padding: 12px 14px; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: center; gap: 10px; border: 1px solid rgba(16, 42, 86, 0.09); border-radius: 17px; background: rgba(255, 255, 255, 0.86); color: var(--navy); text-decoration: none; box-shadow: 0 12px 28px rgba(29, 72, 122, 0.09); transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.hero-download:hover { transform: translateY(-3px); border-color: rgba(23, 105, 224, 0.22); box-shadow: 0 18px 34px rgba(29, 72, 122, 0.14); }
.hero-download > span:nth-child(2) { min-width: 0; }
.hero-download strong, .hero-download small { display: block; white-space: nowrap; }
.hero-download strong { overflow: hidden; text-overflow: ellipsis; font-size: 14px; }
.hero-download small { margin-top: 5px; color: #8491a5; font-size: 9px; }
.hero-download b { color: #91a0b3; font-size: 15px; }
.mini-platform, .mini-windows { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: #e8f3ff; color: var(--blue); font-size: 9px; font-weight: 900; }
.mini-windows { padding: 8px; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2px; }
.mini-windows i { width: 100%; height: 100%; display: block; background: currentColor; }
.android-download .mini-platform { background: #e8f7ef; color: #28945e; }
.ios-download .mini-platform { background: #f0edff; color: #6752c2; }
.hero-release-status { margin-top: 13px; display: flex; align-items: center; gap: 9px; color: #8190a4; }
.hero-release-status > i { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: #2cad75; box-shadow: 0 0 0 5px rgba(44, 173, 117, 0.1); }
.hero-release-status strong, .hero-release-status small { display: inline; font-size: 10px; font-weight: 600; }
.hero-release-status small { margin-left: 7px; }
.trust-list { margin: 22px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 20px; color: #748197; font-size: 13px; list-style: none; }
.trust-list li { display: inline-flex; align-items: center; gap: 7px; }
.trust-list span { width: 18px; height: 18px; display: grid; place-items: center; border-radius: 50%; background: #e5f6ee; color: #278f63; font-size: 10px; font-weight: 900; }

.product-stage { position: relative; min-height: 620px; }
.desktop-frame { position: absolute; top: 42px; right: 0; width: min(100%, 790px); overflow: hidden; border: 1px solid rgba(20, 66, 120, 0.13); border-radius: 24px; background: #fff; box-shadow: 0 34px 70px rgba(28, 71, 121, 0.18); transform: rotate(1.3deg); }
.window-bar { height: 34px; padding: 0 13px; display: flex; align-items: center; gap: 6px; background: rgba(249, 251, 254, 0.96); border-bottom: 1px solid #edf1f6; }
.window-bar span { width: 7px; height: 7px; border-radius: 50%; background: #d7dee8; }
.window-bar span:first-child { background: #ff8e86; }
.window-bar span:nth-child(2) { background: #ffc868; }
.window-bar span:nth-child(3) { background: #68cf9b; }
.window-bar b { margin-left: 7px; color: #8b95a5; font-size: 9px; font-weight: 650; }
.desktop-frame > img { width: 100%; height: auto; display: block; }
.phone-frame { position: absolute; z-index: 2; right: -24px; bottom: -8px; width: 232px; height: 495px; padding: 8px; overflow: hidden; border: 2px solid rgba(16, 42, 86, 0.86); border-radius: 41px; background: #101b2d; box-shadow: 0 30px 60px rgba(14, 42, 78, 0.28); transform: rotate(4deg); }
.phone-frame img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: top; border-radius: 26px; }
.phone-speaker { position: absolute; z-index: 3; top: 13px; left: 50%; width: 58px; height: 16px; transform: translateX(-50%); border-radius: 99px; background: #111825; }
.float-card { position: absolute; z-index: 3; min-width: 208px; padding: 14px 16px; display: flex; align-items: center; gap: 12px; border: 1px solid rgba(255, 255, 255, 0.76); border-radius: 17px; background: rgba(255, 255, 255, 0.88); box-shadow: 0 18px 38px rgba(31, 76, 127, 0.13); backdrop-filter: blur(16px); }
.float-card-top { top: 8px; left: -26px; transform: rotate(-2deg); }
.float-card-bottom { bottom: 40px; left: 2px; transform: rotate(1deg); }
.float-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 11px; font-size: 15px; font-weight: 900; }
.float-icon.blue { background: #e3f2ff; color: var(--blue); }
.float-icon.coral { background: #ffebe9; color: var(--coral); }
.float-card strong, .float-card small { display: block; }
.float-card strong { color: var(--navy); font-size: 14px; }
.float-card small { margin-top: 4px; color: #8591a3; font-size: 11px; }

.feature-strip { width: min(1540px, calc(100% - 56px)); margin: 0 auto 132px; padding: 35px 40px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 28px; background: rgba(255, 255, 255, 0.76); box-shadow: 0 18px 50px rgba(32, 75, 125, 0.08); backdrop-filter: blur(18px); }
.feature-strip article { min-width: 0; padding: 2px 22px; display: flex; gap: 13px; border-right: 1px solid var(--line); }
.feature-strip article:first-child { padding-left: 2px; }
.feature-strip article:last-child { padding-right: 2px; border-right: 0; }
.feature-number { padding-top: 1px; color: #9aabc0; font-size: 10px; font-weight: 850; letter-spacing: 0.08em; }
.feature-strip strong { display: block; color: var(--navy); font-size: 15px; }
.feature-strip p { margin: 8px 0 0; color: #7a879a; font-size: 12px; line-height: 1.65; }

.help-section { width: min(1540px, calc(100% - 56px)); margin: 0 auto; padding: 126px 0 140px; display: grid; grid-template-columns: minmax(350px, 0.8fr) minmax(0, 1.2fr); gap: 100px; align-items: start; }
.help-section .eyebrow { margin-bottom: 13px; }
.help-section h2 { margin: 0; color: var(--navy); font-size: clamp(32px, 4vw, 46px); letter-spacing: -0.04em; }
.help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.help-grid article { min-height: 194px; padding: 23px; border: 1px solid var(--line); border-radius: 20px; background: #fbfdff; }
.help-grid span { color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: 0.08em; }
.help-grid strong { margin-top: 34px; display: block; color: var(--navy); font-size: 16px; }
.help-grid p { margin: 10px 0 0; color: var(--muted); font-size: 12px; line-height: 1.75; }

.site-footer { width: min(1540px, calc(100% - 56px)); min-height: 130px; margin: 0 auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; border-top: 1px solid var(--line); color: #8a96a7; font-size: 12px; }
.site-footer > p { text-align: center; }
.site-footer > a:last-child { justify-self: end; color: var(--blue); text-decoration: none; font-weight: 750; }
.footer-brand img { border-radius: 12px; }
.footer-brand strong { font-size: 13px; }
.footer-brand small { font-size: 9px; }

@media (max-width: 1020px) {
  .site-header { width: min(1180px, calc(100% - 40px)); }
  .brand img { width: 46px; height: 46px; }
  .hero { width: min(1180px, calc(100% - 40px)); min-height: auto; padding-top: 54px; grid-template-columns: 1fr; }
  .hero-copy { max-width: 680px; }
  .product-stage { width: min(760px, 100%); min-height: 520px; margin: 0 auto; }
  .feature-strip { grid-template-columns: 1fr 1fr; row-gap: 24px; }
  .feature-strip article:nth-child(2) { border-right: 0; }
  .help-section { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 720px) {
  .site-header { min-height: 72px; }
  .brand img { width: 40px; height: 40px; }
  .site-nav > a { display: none; }
  .official-pill { padding: 8px 10px; font-size: 10px; }
  .hero { width: min(100% - 30px, 1180px); padding: 46px 0 72px; gap: 42px; }
  .hero h1 { font-size: clamp(34px, 10.5vw, 52px); }
  .hero-lead { font-size: 14px; line-height: 1.8; }
  .hero-downloads { grid-template-columns: 1fr; }
  .hero-download { padding: 11px 13px; }
  .hero-release-status { align-items: flex-start; }
  .hero-release-status strong, .hero-release-status small { display: block; margin-left: 0; }
  .hero-release-status small { margin-top: 3px; }
  .trust-list { gap: 12px; }
  .product-stage { min-height: 385px; }
  .desktop-frame { top: 34px; width: calc(100% - 24px); border-radius: 15px; }
  .window-bar { height: 26px; }
  .phone-frame { right: 0; bottom: 0; width: 126px; height: 270px; border-radius: 25px; }
  .phone-frame img { border-radius: 19px; }
  .phone-speaker { top: 10px; width: 43px; height: 11px; }
  .float-card { min-width: 148px; padding: 9px 10px; }
  .float-card-top { left: 0; top: 0; }
  .float-card-bottom { left: 8px; bottom: 18px; }
  .float-icon { width: 29px; height: 29px; }
  .float-card strong { font-size: 11px; }
  .float-card small { font-size: 8px; }
  .feature-strip { width: min(100% - 30px, 1180px); margin-bottom: 78px; padding: 22px; grid-template-columns: 1fr; gap: 0; }
  .feature-strip article, .feature-strip article:first-child, .feature-strip article:last-child { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature-strip article:last-child { border-bottom: 0; }
  .help-section { width: min(100% - 30px, 1180px); padding: 82px 0; }
  .help-grid { grid-template-columns: 1fr; }
  .help-grid article { min-height: 142px; }
  .help-grid strong { margin-top: 22px; }
  .site-footer { width: min(100% - 30px, 1180px); padding: 28px 0; grid-template-columns: 1fr auto; }
  .site-footer > p { display: none; }
}

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