:root{
  --bg:#f2f5f3;--surface:#fff;--ink:#101613;--muted:#66716c;--line:#dce4df;
  --green:#19c97f;--green-dark:#0a8f57;--dark:#101713;--blue:#2f78ff;
  --container:1240px;--shadow:0 30px 80px rgba(15,30,23,.13);
  --font:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.72;overflow-x:hidden}img{display:block;max-width:100%}a{text-decoration:none;color:inherit}button{font:inherit;border:0;cursor:pointer}.container{width:min(calc(100% - 48px),var(--container));margin:auto}.skip-link{position:fixed;top:10px;left:10px;z-index:9999;padding:10px 16px;background:#111;color:#fff;transform:translateY(-160%)}.skip-link:focus{transform:none}
.site-header{position:fixed;inset:0 0 auto;z-index:100;background:rgba(246,249,247,.83);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:.25s}.site-header.scrolled{background:rgba(255,255,255,.96);border-color:var(--line);box-shadow:0 14px 36px rgba(15,30,23,.08)}.header-inner{height:76px;display:flex;align-items:center;gap:28px}.brand img{width:150px}.desktop-nav{display:flex;gap:25px;margin-left:auto}.desktop-nav a{font-size:14px;color:#45504b}.header-cta{padding:12px 20px;border-radius:999px;background:var(--dark);color:#fff;font-weight:800}.menu-toggle{display:none;width:44px;background:transparent}.menu-toggle span{display:block;height:2px;margin:6px;background:#111}.mobile-nav{position:absolute;top:100%;left:0;width:100%;padding:14px 24px 24px;background:#fff;box-shadow:var(--shadow)}.mobile-nav a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
.hero{position:relative;min-height:930px;padding:130px 0 90px;overflow:hidden}.hero-bg{position:absolute;inset:0}.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.2}.hero-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#f2f5f3 0%,rgba(242,245,243,.93) 44%,rgba(242,245,243,.34) 75%,#f2f5f3 100%)}.hero-layout{position:relative;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:50px}.eyebrow{display:inline-block;color:var(--green-dark);font-size:12px;font-weight:900;letter-spacing:.15em}.hero h1,.section-heading h2,.platform-heading h2,.ios-copy h2,.windows-copy h2,.launch-copy h2,.troubleshooting-copy h2,.final-copy h2{margin:18px 0;font-size:clamp(44px,5vw,76px);line-height:1.02;letter-spacing:-.05em}.hero-copy p,.section-heading p,.platform-heading p,.ios-copy>p,.windows-copy>p,.launch-copy>p,.troubleshooting-copy>p,.final-copy>p{color:var(--muted);font-size:17px}.hero-actions{display:flex;align-items:center;gap:18px;margin:32px 0}.primary-button{display:flex;align-items:center;gap:13px;padding:10px 22px 10px 10px;border-radius:18px;background:var(--dark);color:#fff;box-shadow:0 22px 55px rgba(16,23,19,.2)}.primary-button img{width:50px;border-radius:13px}.primary-button span{display:flex;flex-direction:column;align-items:flex-start}.primary-button small{color:#9facA5;font-size:9px;letter-spacing:.12em}.secondary-link{font-weight:800;border-bottom:1px solid #111}.hero-tags{display:flex;flex-wrap:wrap;gap:9px}.hero-tags span{padding:8px 12px;border:1px solid #cbd6d0;border-radius:999px;background:#fff9;font-size:12px}.hero-gallery{position:relative;min-height:650px}.hero-device{position:absolute;right:-40px;top:10px;width:620px;filter:drop-shadow(0 35px 70px rgba(15,30,23,.2))}.hero-multi{position:absolute;left:-20px;bottom:-30px;width:420px;filter:drop-shadow(0 25px 50px rgba(15,30,23,.18))}.hero-icon{position:absolute;right:20px;bottom:70px;display:flex;align-items:center;gap:12px;padding:14px 17px;border-radius:18px;background:#fffdf2;box-shadow:var(--shadow)}.hero-icon img{width:54px;border-radius:14px}.hero-icon span{display:block;color:var(--muted);font-size:11px}
section{position:relative}.section-heading{max-width:800px;margin:0 auto 50px}.centered{text-align:center}.prepare-section{padding:120px 0;background:#fff}.prepare-visual{position:relative;min-height:620px;border-radius:34px;overflow:hidden;background:#0f1713;color:#fff}.prepare-bg{position:absolute;inset:0}.prepare-bg img{width:100%;height:100%;object-fit:cover;opacity:.24}.prepare-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#0f1713 0%,rgba(15,23,19,.9) 50%,rgba(15,23,19,.15))}.prepare-copy{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:1px;width:58%;padding:55px}.prepare-copy div{padding:26px;border-top:1px solid rgba(255,255,255,.14);border-left:1px solid rgba(255,255,255,.14)}.prepare-copy b{color:var(--green)}.prepare-copy h3{margin:12px 0 5px}.prepare-copy p{margin:0;color:#aeb9b3;font-size:13px}.prepare-device{position:absolute;right:-40px;bottom:-70px;width:560px}
.platform-intro{padding:0;background:#fff}.platform-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.platform-strip article{padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.platform-strip span{color:var(--green-dark);font-weight:900}.platform-strip strong{display:block;margin:20px 0 5px;font-size:21px}.platform-strip p{margin:0;color:var(--muted);font-size:13px}
.android-section{padding:130px 0;background:#eef3f0}.platform-heading{display:grid;grid-template-columns:1fr .8fr;align-items:end;gap:60px;margin-bottom:45px}.android-entry img{width:100%;border-radius:22px;box-shadow:var(--shadow)}.android-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:center;margin-top:65px}.step-list{list-style:none;padding:0;margin:0;border-top:1px solid #c9d4ce}.step-list li{display:grid;grid-template-columns:50px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid #c9d4ce}.step-list span{color:var(--green-dark);font-weight:900}.step-list h3{margin:0}.step-list p{margin:3px 0;color:var(--muted);font-size:13px}.android-images{position:relative;min-height:520px}.android-panel{position:absolute;right:0;top:0;width:560px;border-radius:24px;box-shadow:var(--shadow)}.android-screen{position:absolute;left:0;bottom:0;width:300px;border-radius:24px;box-shadow:var(--shadow);border:8px solid #fff}
.ios-section{padding:130px 0;background:#fff}.ios-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:90px;align-items:center}.ios-gallery{position:relative;min-height:680px}.ios-device{position:absolute;right:-70px;top:10px;width:600px;opacity:.35}.ios-install,.ios-client{position:absolute;width:230px;border-radius:35px;box-shadow:var(--shadow);border:8px solid #fff}.ios-install{left:30px;top:20px;transform:rotate(-5deg)}.ios-client{right:70px;bottom:10px;transform:rotate(5deg)}.ios-steps{margin-top:30px;border-top:1px solid var(--line)}.ios-steps article{display:grid;grid-template-columns:50px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}.ios-steps b{color:var(--green-dark)}.ios-steps h3{margin:0}.ios-steps p{margin:3px 0;color:var(--muted);font-size:13px}
.windows-section{padding:130px 0 0;background:#eef3f0}.windows-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:90px;align-items:center}.windows-checklist{margin-top:28px;border-top:1px solid #c9d4ce}.windows-checklist div{display:grid;grid-template-columns:45px 1fr;padding:16px 0;border-bottom:1px solid #c9d4ce}.windows-checklist span{color:var(--blue);font-weight:900}.windows-installer{overflow:hidden;border:1px solid #c6d0ca;border-radius:20px;background:#fff;box-shadow:var(--shadow)}.installer-head{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:9px;padding:13px 16px;background:#f1f4f2;border-bottom:1px solid var(--line);font-size:12px}.installer-head img{width:25px;border-radius:6px}.installer-body{padding:30px}.installer-body>img{width:64px;margin:0 auto 10px;border-radius:16px}.installer-body h3{text-align:center;margin:0}.installer-body>p{text-align:center;color:var(--muted);font-size:13px}.installer-body>label{display:block;margin:18px 0 7px;font-size:12px;font-weight:800}.path-field{display:flex;border:1px solid #cbd5cf;border-radius:9px;overflow:hidden}.path-field span{flex:1;padding:10px;font-size:12px}.path-field button{padding:0 13px;background:#edf1ef}.installer-body .check{font-weight:400}.install-progress{height:8px;margin-top:20px;border-radius:99px;background:#e5ebe7;overflow:hidden}.install-progress i{display:block;width:0;height:100%;background:var(--blue);transition:.35s}.installer-footer{display:flex;justify-content:flex-end;gap:10px;padding:15px 18px;background:#f4f6f5;border-top:1px solid var(--line)}.installer-footer button{padding:9px 17px;border-radius:8px}.installer-footer .install{background:var(--blue);color:#fff}.windows-banner{margin-top:80px;background:#101713}.windows-banner img{width:100%;max-height:420px;object-fit:cover}
.launch-section{padding:130px 0;background:#101713;color:#fff}.launch-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:90px;align-items:center}.launch-copy p,.launch-copy li{color:#aab5af}.launch-gallery{position:relative;min-height:620px}.launch-phone,.launch-android{position:absolute;width:210px;border-radius:32px;box-shadow:0 30px 70px rgba(0,0,0,.35)}.launch-phone{left:20px;top:20px}.launch-android{right:20px;bottom:0}.launch-panel{position:absolute;left:150px;top:120px;width:450px;border-radius:26px;box-shadow:0 30px 70px rgba(0,0,0,.35)}
.security-section{padding:120px 0;background:#fff}.security-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}.security-main img{width:100%;border-radius:24px}.security-side>img{width:100%;max-height:320px;object-fit:contain;border-radius:24px;background:#f3f7f5}.security-points{display:grid;gap:12px;margin-top:18px}.security-points article{padding:18px;border:1px solid var(--line);border-radius:16px}.security-points b{color:var(--green-dark)}.security-points h3{margin:10px 0 3px}.security-points p{margin:0;color:var(--muted);font-size:13px}
.troubleshooting-section{padding:120px 0;background:#eef3f0}.troubleshooting-layout{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.issue-tabs{display:flex;flex-wrap:wrap;gap:9px;margin:26px 0}.issue-tabs button{padding:10px 13px;border-radius:999px;background:#fff;border:1px solid #cbd6d0}.issue-tabs .active{background:var(--dark);color:#fff}.issue-panel{padding:25px;border-radius:20px;background:#fff;border:1px solid var(--line)}.issue-panel>span{color:var(--blue);font-size:10px;letter-spacing:.12em}.issue-panel h3{margin:7px 0}.issue-panel p{margin:0;color:var(--muted)}.help-visual{position:relative;min-height:580px}.help-visual img:first-child{position:absolute;left:60px;top:0;width:250px;border-radius:34px;box-shadow:var(--shadow)}.help-visual img:last-child{position:absolute;right:0;bottom:0;width:390px}
.final-cta{padding:120px 0;background:#fff}.final-cta-inner{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:center;padding:60px;border-radius:34px;background:linear-gradient(140deg,#ddf8e9,#f8fffb);overflow:hidden}.final-copy>img{width:150px;margin-bottom:30px}.final-actions{display:flex;align-items:center;gap:16px;margin-top:28px}.final-actions button{padding:14px 20px;border-radius:999px;background:var(--dark);color:#fff;font-weight:800}.final-actions a{font-weight:800;border-bottom:1px solid #111}.final-gallery{position:relative;min-height:480px}.final-gallery img:first-child{position:absolute;left:0;bottom:0;width:430px}.final-gallery img:last-child{position:absolute;right:-90px;top:-20px;width:480px}
.site-footer{background:#101713;color:#fff}.footer-main{display:grid;grid-template-columns:1.4fr .7fr .7fr;gap:50px;padding:60px 0}.footer-main img{width:150px;filter:brightness(0) invert(1)}.footer-main p,.footer-main a{color:#9ca9a3;font-size:13px}.footer-main a{display:block;margin:9px 0}.footer-main h3{font-size:12px}.footer-bottom{padding:20px 0;border-top:1px solid #28332e;color:#75827c;font-size:11px}.toast{position:fixed;right:22px;bottom:22px;z-index:300;padding:14px 18px;border-radius:12px;background:#101713;color:#fff;box-shadow:var(--shadow)}
[data-reveal]{opacity:0;transform:translateY(24px);transition:.7s}[data-reveal="left"]{transform:translateX(-30px)}[data-reveal="right"]{transform:translateX(30px)}[data-reveal].visible{opacity:1;transform:none}
@media(max-width:1050px){.desktop-nav,.header-cta{display:none}.menu-toggle{display:block;margin-left:auto}.hero-layout,.platform-heading,.android-grid,.ios-layout,.windows-layout,.launch-layout,.security-grid,.troubleshooting-layout,.final-cta-inner{grid-template-columns:1fr}.hero-gallery{min-height:570px}.prepare-copy{width:70%}.platform-strip{grid-template-columns:1fr}.final-gallery{min-height:500px}.footer-main{grid-template-columns:1fr 1fr}.footer-main>div:first-child{grid-column:1/-1}}
@media(max-width:720px){.container{width:min(calc(100% - 30px),var(--container))}.hero{padding-top:115px}.hero h1{font-size:48px}.hero-actions{flex-direction:column;align-items:stretch}.primary-button{width:100%}.hero-gallery{min-height:430px}.hero-device{width:115%;right:50%;transform:translateX(50%)}.hero-multi{width:260px;left:0}.hero-icon{right:0;bottom:20px}.prepare-section,.android-section,.ios-section,.windows-section,.launch-section,.security-section,.troubleshooting-section,.final-cta{padding:80px 0}.prepare-visual{min-height:auto}.prepare-copy{width:100%;grid-template-columns:1fr;padding:30px}.prepare-device{position:relative;right:auto;bottom:auto;width:100%;margin-top:20px}.android-images{min-height:430px}.android-panel{width:100%}.android-screen{width:210px}.ios-gallery{min-height:500px}.ios-install,.ios-client{width:180px}.ios-device{width:100%;right:0}.launch-gallery{min-height:470px}.launch-phone,.launch-android{width:160px}.launch-panel{left:70px;width:320px}.help-visual{min-height:460px}.help-visual img:first-child{left:0;width:200px}.help-visual img:last-child{width:300px}.final-cta-inner{padding:35px 24px}.final-gallery{min-height:380px}.final-gallery img:first-child{width:300px}.final-gallery img:last-child{width:330px}.footer-main{grid-template-columns:1fr}.footer-main>div:first-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}[data-reveal]{opacity:1;transform:none}}
img[src*="app-icon"] { object-fit: contain; }