*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f4f3f0;color:#191919;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.72}img{display:block;max-width:100%}a{text-decoration:none;color:inherit}.header{height:72px;display:flex;align-items:center;gap:28px;padding:0 max(18px,calc((100vw - 1180px)/2));background:#101012;color:#fff;position:sticky;top:0;z-index:30}.brand{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.1em;font-weight:900}.brand img{width:38px;height:38px;object-fit:contain}.desktop-nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:#bdbdc1}.header-cta{background:#d82d27;padding:10px 18px;border-radius:8px;font-weight:900}.menu-btn,.mobile-nav{display:none}.hero{min-height:650px;background:#101012;color:#fff;padding:72px max(18px,calc((100vw - 1180px)/2));display:grid;grid-template-columns:1fr .95fr;gap:70px;align-items:center}.overline{margin:0 0 10px;font-size:10px;letter-spacing:.2em;font-weight:900;color:#d82d27}.hero h1,.section-head h2,.device-title h2,.product-story h2,.visual-cta h2,.minor-image h2,.faq h2,.final-cta h2{font-size:clamp(34px,4.8vw,60px);line-height:1.05;letter-spacing:-.045em;margin:10px 0 18px}.hero h1{font-size:clamp(52px,7vw,88px)}.lead{font-size:18px;color:#bebec3;max-width:660px}.actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:28px}.btn-primary{background:#d82d27;color:#fff;padding:13px 21px;border-radius:8px;font-weight:900}.btn-link{font-weight:900;border-bottom:1px solid #777;padding-bottom:3px}.mobile-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:38px}.mobile-facts div{border-top:1px solid #39393d;padding-top:12px}.mobile-facts b,.mobile-facts span{display:block}.mobile-facts b{color:#d82d27}.mobile-facts span{font-size:12px;color:#aaa}.hero-visual{position:relative;min-height:510px}.hero-visual figure{position:absolute;margin:0;background:#1b1b1e;border:1px solid #333;border-radius:26px;padding:12px}.hero-visual img{width:100%;height:100%;object-fit:contain;border-radius:18px}.hero-main{width:64%;height:470px;right:0;top:0;z-index:2}.hero-mini{width:48%;height:355px;left:0;bottom:0;transform:rotate(-4deg)}.screens,.device-section,.steps,.faq{width:min(1180px,calc(100% - 36px));margin:auto;padding:84px 0}.section-head{max-width:780px}.section-head.small{max-width:700px}.section-head>p:last-child,.device-title>p:last-child,.story-copy p,.minor-image p,.faq-list p{color:#646464}.screen-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px;align-items:start}.screen-gallery figure{margin:0;background:#fff;border:1px solid #deddd9;border-radius:18px;overflow:hidden}.screen-gallery figure.raised{margin-top:44px}.screen-gallery img{width:100%;height:300px;object-fit:contain;background:#ebeae7;padding:10px}.screen-gallery figcaption{padding:18px}.screen-gallery strong,.screen-gallery span{display:block}.screen-gallery span{font-size:13px;color:#707070}.device-section{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px}.device-title{position:sticky;top:105px;align-self:start}.device-cards{display:grid;gap:16px}.device-cards article{min-height:260px;padding:34px;border-radius:20px;display:flex;flex-direction:column;justify-content:flex-end}.device-cards .android{background:#dff4d1}.device-cards .iphone{background:#dce4f4}.tag{font-size:10px;letter-spacing:.18em;font-weight:900}.device-cards h3{font-size:30px;margin:8px 0}.device-cards p{max-width:650px;color:#4e5551}.device-cards a{align-self:flex-start;font-weight:900;border-bottom:2px solid #191919;padding-bottom:4px}.product-story{display:grid;grid-template-columns:.9fr 1.1fr;background:#1b1b1d;color:#fff}.story-copy{padding:76px clamp(24px,6vw,90px);align-self:center}.story-copy p{color:#bdbdc1}.story-link{display:inline-block;margin-top:10px;font-weight:900;color:#fff}.product-story figure{margin:0;background:#151517;display:flex;align-items:center}.product-story img{width:100%;height:100%;max-height:620px;object-fit:contain;padding:26px}.step-list{list-style:none;margin:36px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}.step-list li{background:#fff;border:1px solid #dddcd8;border-radius:16px;padding:24px;display:grid;grid-template-columns:56px 1fr;gap:16px}.step-list b{font-size:26px;color:#d82d27}.step-list h3{margin:0 0 5px}.step-list p{margin:0;color:#666}.visual-cta{width:min(1180px,calc(100% - 36px));margin:0 auto 78px;background:#111;position:relative;min-height:420px;border-radius:22px;overflow:hidden}.visual-cta img{width:100%;height:100%;min-height:420px;object-fit:contain;opacity:.52}.visual-copy{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;padding:48px;color:#fff;background:linear-gradient(90deg,rgba(0,0,0,.8),rgba(0,0,0,.08))}.visual-copy h2{max-width:650px}.visual-copy p{max-width:620px;color:#d1d1d3}.visual-copy a{align-self:flex-start;background:#d82d27;padding:12px 20px;border-radius:8px;font-weight:900}.minor-image{width:min(1080px,calc(100% - 36px));margin:0 auto 86px;display:grid;grid-template-columns:.9fr 1.1fr;gap:46px;align-items:center}.minor-image img{width:100%;max-height:280px;object-fit:contain;background:#e4e2de;border-radius:16px;padding:12px}.faq{display:grid;grid-template-columns:.68fr 1.32fr;gap:60px;padding-top:10px}.faq-list{border-top:1px solid #cccac5}.faq details{border-bottom:1px solid #cccac5}.faq summary{padding:19px 38px 19px 0;font-weight:900;cursor:pointer;position:relative}.faq summary:after{content:"+";position:absolute;right:3px;color:#d82d27}.faq details[open] summary:after{content:"−"}.faq-list p{margin:0 0 20px}.final-cta{width:min(1180px,calc(100% - 36px));margin:0 auto 80px;background:#d82d27;color:#fff;padding:44px 50px;border-radius:20px;display:flex;justify-content:space-between;align-items:center;gap:30px}.final-cta span{font-size:10px;letter-spacing:.18em;font-weight:900;color:#ffd0cd}.final-cta p{margin:0;color:#ffe1df}.final-cta a{background:#fff;color:#191919;padding:13px 20px;border-radius:8px;font-weight:900;white-space:nowrap}footer{background:#101012;color:#aaa;padding:48px max(18px,calc((100vw - 1180px)/2)) 96px}footer strong{color:#fff;font-size:18px}footer p{max-width:760px}.sticky{display:none}
@media(max-width:820px){body{padding-bottom:62px}.header{height:64px;padding:0 14px}.desktop-nav,.header-cta{display:none}.menu-btn{display:block;margin-left:auto;background:none;border:0;color:#fff;font-size:23px}.mobile-nav{position:absolute;z-index:40;top:64px;left:0;right:0;background:#101012;color:#fff;padding:10px 18px 18px}.mobile-nav.open{display:grid}.mobile-nav a{padding:9px 0}.hero{grid-template-columns:1fr;padding:46px 14px;gap:30px}.hero h1{font-size:42px}.lead{font-size:16px}.mobile-facts{grid-template-columns:1fr}.hero-visual{min-height:380px}.hero-main{height:355px}.hero-mini{height:285px}.screens,.device-section,.steps,.faq{width:calc(100% - 28px);padding:58px 0}.screen-gallery{grid-template-columns:1fr}.screen-gallery figure.raised{margin-top:0}.screen-gallery img{height:auto;max-height:430px}.device-section{grid-template-columns:1fr;gap:24px}.device-title{position:static}.product-story{grid-template-columns:1fr}.story-copy{padding:46px 22px}.product-story img{max-height:430px}.step-list{grid-template-columns:1fr}.visual-cta{width:calc(100% - 28px);margin-bottom:58px}.visual-copy{padding:30px 22px}.minor-image{width:calc(100% - 28px);grid-template-columns:1fr;margin-bottom:58px}.faq{grid-template-columns:1fr;gap:20px}.final-cta{width:calc(100% - 28px);display:block;padding:32px 24px}.final-cta a{display:flex;justify-content:center;margin-top:20px}footer{padding:42px 14px 88px}.sticky{position:fixed;z-index:50;left:0;right:0;bottom:0;height:62px;background:#fff;border-top:1px solid #ddd;display:flex;align-items:center;justify-content:space-between;padding:7px 14px}.sticky span{display:grid;line-height:1.05}.sticky small{color:#696969}.sticky a{background:#d82d27;color:#fff;padding:10px 15px;border-radius:8px;font-weight:900}}
@media(max-width:420px){.hero h1,.section-head h2,.device-title h2,.product-story h2,.visual-cta h2,.minor-image h2,.faq h2,.final-cta h2{font-size:29px}.actions a{width:100%;text-align:center}.hero-visual{min-height:330px}}