:root{--ink:#252a30;--paper:#fff;--muted:#6d7680;--line:#e2e7ec;--mist:#e7f0f8;--soft:#f6f8fb;--lime:#a8dd59;--lime-dark:#79a92f;--orange:#ff8551;--shadow:0 18px 50px rgba(38,61,82,.12)}
[hidden]{display:none!important}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:82px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;line-height:1.65;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,a{font:inherit}
button{color:inherit}
img{display:block;max-width:100%}
.page-shell{width:min(1136px,calc(100% - 48px));margin:0 auto}
.site-header{height:82px;background:rgba(255,255,255,.97);border-bottom:1px solid rgba(37,42,48,.08);position:sticky;top:0;z-index:50;backdrop-filter:blur(14px)}
.header-inner{width:min(1136px,calc(100% - 48px));height:100%;margin:0 auto;display:grid;grid-template-columns:minmax(170px,1fr) auto minmax(170px,1fr);align-items:center;gap:30px}
.brand{display:flex;align-items:center;gap:10px;min-width:0;font-size:18px;font-weight:800}
.brand>span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.brand-icon{width:42px;height:42px;border-radius:8px;background:var(--soft);overflow:hidden;flex:0 0 auto}
.brand-icon img{width:100%;height:100%;object-fit:cover}
.desktop-nav{display:flex;align-items:center;gap:38px;font-size:15px;font-weight:700}
.desktop-nav a{padding:28px 0;position:relative}
.desktop-nav a:after{content:"";position:absolute;left:50%;right:50%;bottom:19px;height:2px;background:var(--lime-dark);transition:.2s ease}
.desktop-nav a:hover:after{left:0;right:0}
.header-download{position:relative;justify-self:end}
.header-download-button{min-height:44px;border:0;border-radius:7px;background:var(--lime);padding:0 19px;color:#fff;font-weight:800;box-shadow:0 9px 20px rgba(121,169,47,.2);cursor:pointer}
.header-download-button span{margin-left:8px}
.download-menu{position:absolute;right:0;top:54px;width:210px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:8px;box-shadow:var(--shadow)}
.download-menu a{display:block;padding:11px 12px;border-radius:5px;font-weight:700;font-size:14px}
.download-menu a:hover{background:var(--soft)}
.hero{min-height:590px;position:relative;background-color:var(--mist);background-position:center;background-size:cover;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(231,240,248,.98) 0%,rgba(231,240,248,.96) 48%,rgba(231,240,248,.78) 67%,rgba(231,240,248,.93) 100%)}
.hero-art{position:absolute;width:370px;height:370px;border-radius:50%;right:8%;top:-160px;background:rgba(168,221,89,.12)}
.hero-art:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;right:-78px;bottom:-98px;background:rgba(255,255,255,.42)}
.hero-layout{min-height:590px;position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(390px,500px);gap:78px;align-items:center;padding-block:52px}
.hero-copy{min-width:0}
.eyebrow{margin:0 0 9px;color:var(--lime-dark);font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:0}
.hero h1{margin:0;font-size:clamp(46px,5.2vw,68px);line-height:1.1;letter-spacing:0;overflow-wrap:anywhere}
.hero-summary{max-width:610px;margin:24px 0 36px;font-size:19px;color:#4e5964}
.hero-summary p{margin:0;overflow-wrap:anywhere}
.hero-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.hero-facts div{min-width:0}
.hero-facts strong{display:block;font-size:23px;line-height:1.3;overflow-wrap:anywhere}
.hero-facts span{display:block;margin-top:7px;color:var(--muted);font-size:13px}
.download-card{background:rgba(255,255,255,.96);border:1px solid rgba(255,255,255,.82);border-radius:8px;padding:34px 38px;box-shadow:var(--shadow)}
.download-card-head{display:flex;align-items:center;gap:16px}
.app-icon,.large-app-icon{display:block;overflow:hidden;border-radius:13px;background:var(--soft);flex:0 0 auto}
.app-icon{width:62px;height:62px}
.app-icon img,.large-app-icon img{width:100%;height:100%;object-fit:cover}
.download-card small{color:var(--muted)}
.download-card h2{font-size:26px;line-height:1.25;margin:1px 0 0;letter-spacing:0}
.download-card>p{margin:20px 0;color:var(--muted)}
.primary-action,.secondary-action{min-height:56px;width:100%;display:flex;align-items:center;justify-content:center;border-radius:6px;font-weight:800;text-align:center;cursor:pointer}
.primary-action{background:var(--lime);color:#fff;border:1px solid var(--lime);box-shadow:0 10px 24px rgba(121,169,47,.18)}
.primary-action span{font-size:20px;margin-right:9px}
.secondary-action{margin-top:12px;background:#fff;border:1px solid var(--line)}
.source-line{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;border-top:1px solid var(--line);margin-top:20px;padding-top:16px;font-size:12px}
.source-line span{color:var(--muted)}
.source-line strong{text-align:right;overflow-wrap:anywhere}
.benefits{display:flex;justify-content:space-between;gap:14px;margin-top:18px;color:#68765e;font-size:12px}
.benefits span:before{content:"✓";display:inline-grid;place-items:center;width:17px;height:17px;margin-right:5px;border:1px solid var(--lime);border-radius:50%;color:var(--lime-dark)}
.section-band{padding:84px 0}
.screens,.install,.questions{background:var(--soft)}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
.section-heading h2,.intro h2{margin:0;font-size:34px;line-height:1.25;letter-spacing:0}
.section-heading>p{margin:0 0 4px;color:var(--muted)}
.screen-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:18px}
.screen-card{padding:0;border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden;text-align:left;cursor:zoom-in;box-shadow:0 10px 28px rgba(39,57,74,.07)}
.screen-card-main{grid-row:span 2}
.screen-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.screen-card-main img{height:calc(100% - 59px);aspect-ratio:auto}
.screen-card>span{min-height:59px;padding:15px 17px;display:flex;align-items:center;justify-content:space-between}
.screen-card small{color:var(--lime-dark);font-weight:800}
.intro-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:100px;align-items:center}
.intro-copy>div>p,.intro-copy>p{max-width:670px;color:var(--muted);font-size:17px}
.feature-list{display:grid;gap:12px;margin-top:30px}
.feature-list article{display:flex;gap:17px;align-items:center;border:1px solid var(--line);border-radius:7px;padding:15px 18px}
.feature-list article>span{width:42px;height:42px;border-radius:6px;background:var(--lime);color:#fff;display:grid;place-items:center;font-weight:900;flex:0 0 auto}
.feature-list h3{margin:0;font-size:16px}
.feature-list p{margin:1px 0 0!important;font-size:13px!important;color:var(--muted)}
.intro-download{border:1px solid var(--line);border-top:5px solid var(--lime);border-radius:8px;padding:34px;background:#fff;text-align:center;box-shadow:var(--shadow)}
.large-app-icon{width:88px;height:88px;margin:0 auto 14px}
.intro-download>p{margin:0;color:var(--muted);font-size:13px}
.intro-download>strong{display:block;font-size:25px;margin:1px 0 18px;overflow-wrap:anywhere}
.intro-download .primary-action{min-height:50px}
.intro-download dl{margin:22px 0 0;text-align:left;border-top:1px solid var(--line)}
.intro-download dl div{display:grid;grid-template-columns:70px 1fr;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.intro-download dt{color:var(--muted)}
.intro-download dd{margin:0;font-weight:700;overflow-wrap:anywhere}
.install-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(400px,1fr);gap:70px;align-items:start}
.install-copy{background:#fff;border-left:4px solid var(--lime);border-radius:5px;padding:28px 30px;color:#57626d}
.install-copy p{margin:0;white-space:pre-line}
.install-steps{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.install-steps li{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:15px 17px}
.install-steps li>span{width:38px;height:38px;border-radius:50%;background:var(--orange);color:#fff;display:grid;place-items:center;font-weight:900;flex:0 0 auto}
.install-steps strong{display:block}
.install-steps p{margin:1px 0 0;color:var(--muted);font-size:13px}
.review-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
.review-layout article{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 10px 28px rgba(39,57,74,.06)}
.review-featured{display:grid;grid-template-columns:58px minmax(0,1fr);gap:20px;padding:30px;border-left:4px solid var(--lime)!important}
.review-avatar{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:var(--lime);color:#fff;font-size:21px;font-weight:900}
.review-stars{display:block;color:var(--orange);font-size:16px;letter-spacing:0}
.review-layout blockquote{margin:12px 0 16px;font-size:17px;line-height:1.8;color:#3e4750}
.review-layout article p{margin:0;color:var(--muted);font-size:13px}
.review-stack{display:grid;gap:18px}
.review-stack article{padding:22px 24px}
.review-stack blockquote{font-size:14px;margin:8px 0 12px}
.question-layout{display:grid;grid-template-columns:340px 1fr;gap:80px}
.question-list details{border-top:1px solid var(--line)}
.question-list details:last-child{border-bottom:1px solid var(--line)}
.question-list summary{list-style:none;cursor:pointer;padding:20px 42px 20px 0;font-weight:800;position:relative}
.question-list summary:after{content:"+";position:absolute;right:6px;top:15px;color:var(--lime-dark);font-size:25px}
.question-list details[open] summary:after{content:"−"}
.question-list p{margin:0 0 22px;color:var(--muted)}
.final-cta{padding:62px 0;background:var(--mist)}
.final-cta .page-shell{display:flex;align-items:center;justify-content:space-between;gap:40px}
.final-cta p{margin:0;color:var(--lime-dark);font-weight:800}
.final-cta h2{margin:3px 0 0;font-size:30px;line-height:1.25}
.final-cta .primary-action{width:auto;min-width:210px}
footer{padding:38px 0;background:#252a30;color:#fff}
footer .page-shell{display:flex;justify-content:space-between;gap:30px}
footer span{font-weight:800}
footer p{margin:0;color:#b7bec5;font-size:13px}
.lightbox,.download-dialog{border:0;padding:0;border-radius:8px;box-shadow:var(--shadow);max-width:min(94vw,1100px);max-height:90vh;background:#fff}
.lightbox::backdrop,.download-dialog::backdrop{background:rgba(20,28,36,.76)}
.lightbox img{max-width:92vw;max-height:84vh}
.lightbox button,.download-dialog>button:first-child{position:absolute;right:10px;top:10px;width:38px;height:38px;border:0;border-radius:50%;background:rgba(37,42,48,.9);color:#fff;font-size:24px;cursor:pointer}
.download-dialog{width:min(92vw,540px);padding:40px}
.download-dialog h2{margin:0 0 22px;font-size:28px}
.check-list{border-block:1px solid var(--line);padding:8px 0;margin-bottom:22px}
.check-list p{display:flex;gap:12px;align-items:flex-start;color:#3b4652}
.check-list span{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--soft);color:var(--orange);font-size:12px;font-weight:900;flex:0 0 auto}
.download-dialog small{display:block;margin-top:12px;text-align:center;color:var(--muted)}
@media(max-width:980px){
  .header-inner{grid-template-columns:minmax(0,1fr) auto;width:min(100% - 32px,760px)}.desktop-nav{display:none}.brand{max-width:58vw}.page-shell{width:min(100% - 40px,760px)}
  .hero-layout{grid-template-columns:1fr;gap:38px;padding-block:54px}.hero-copy{max-width:680px}.download-card{max-width:680px}.hero-art{right:-130px}
  .intro-layout{grid-template-columns:1fr 340px;gap:48px}.install-layout{gap:38px}.question-layout{grid-template-columns:280px 1fr;gap:40px}
}
@media(max-width:680px){
  html{scroll-padding-top:70px}.site-header{height:70px}.header-inner{width:calc(100% - 28px);gap:12px}.brand{font-size:17px;max-width:53vw}.brand-icon{width:40px;height:40px}.header-download-button{min-height:42px;padding:0 14px}.download-menu{top:50px;width:200px}
  .page-shell{width:calc(100% - 32px)}.hero{min-height:auto;background-position:62% center}.hero:before{background:rgba(231,240,248,.93)}.hero-layout{min-height:auto;padding-block:38px 56px;gap:30px}.hero h1{font-size:42px}.hero-summary{font-size:16px;margin:17px 0 27px}.hero-facts{gap:10px}.hero-facts strong{font-size:18px}.hero-facts span{font-size:11px}.download-card{padding:25px 20px}.download-card h2{font-size:21px}.download-card>p{font-size:14px}.benefits{gap:7px;font-size:11px}.benefits span:before{display:none}
  .section-band{padding:60px 0}.section-heading{align-items:start;flex-direction:column;gap:7px;margin-bottom:24px}.section-heading h2,.intro h2{font-size:29px}.section-heading>p{font-size:14px}.screen-grid{grid-template-columns:1fr}.screen-card-main{grid-row:auto}.screen-card-main img{height:auto;aspect-ratio:16/9}
  .intro-layout,.install-layout,.review-layout,.question-layout{grid-template-columns:1fr;gap:34px}.intro-download{padding:28px 22px}.install-copy{padding:23px 20px}.review-featured{grid-template-columns:46px minmax(0,1fr);gap:14px;padding:24px 20px}.review-avatar{width:46px;height:46px;font-size:17px}.review-layout blockquote{font-size:15px}.question-layout{gap:6px}.final-cta{padding:48px 0}.final-cta .page-shell{align-items:flex-start;flex-direction:column;gap:24px}.final-cta h2{font-size:26px}.final-cta .primary-action{width:100%}footer .page-shell{flex-direction:column;gap:4px}
  .download-dialog{padding:34px 22px}.hero h1,.hero-summary p,.hero-facts strong,.source-line strong,.intro-copy p,.install-copy p,.question-list p{overflow-wrap:anywhere}
}
@media(prefers-reduced-motion:no-preference){.primary-action,.screen-card,.header-download-button{transition:.2s ease}.primary-action:hover,.header-download-button:hover{filter:brightness(.97);transform:translateY(-1px)}.screen-card:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(39,57,74,.12)}}