:root{--ink:#1d1d1f;--muted:#6e6e73;--blue:#0071e3;--surface:#f5f5f7;--line:#d2d2d7;--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:#fff;color:var(--ink);font:16px/1.8 var(--font);-webkit-font-smoothing:antialiased}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.3;font-weight:600;letter-spacing:-.035em}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:5px}.container{width:min(1200px,calc(100% - 80px));margin:auto}.section{padding:110px 0}.eyebrow{font-size:13px;font-weight:500;letter-spacing:.07em;color:var(--muted);margin-bottom:18px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 25px;border-radius:999px;border:1px solid var(--blue);background:var(--blue);color:#fff;font-size:16px;font-weight:400;transition:background .2s}.button:hover{background:#0077ed}.button.outline{background:transparent;color:var(--blue);border-color:transparent;padding-left:10px;padding-right:10px}.button.outline:hover{background:transparent;text-decoration:underline}.skip{position:fixed;top:-80px;left:16px;padding:10px;background:#fff;z-index:100}.skip:focus{top:12px}.nav{position:sticky;top:0;z-index:30;background:#fbfbfdcc;backdrop-filter:blur(24px) saturate(160%);-webkit-backdrop-filter:blur(24px) saturate(160%);border-bottom:1px solid #0000000d}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}.brand{display:flex;align-items:center;gap:10px;line-height:1.4;white-space:nowrap}.brand span{font-size:16px;font-weight:600;letter-spacing:.025em}.brand small{display:block;font-size:12px;color:var(--muted);letter-spacing:.03em;font-weight:400;margin-top:3px}.nav nav{display:flex;gap:32px;color:#424245;font-size:14px}.nav nav a:hover{color:var(--blue)}.nav-cta{min-height:36px;padding:7px 17px;font-size:13px}.menu-button{display:none;border:0;border-radius:999px;padding:8px 14px;background:#ebebed;color:var(--ink);font-size:14px}.mobile-nav[hidden]{display:none!important}@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.nav{background:#fafafc}}.hero{background:#fff;text-align:center;overflow:hidden}.hero-inner{padding:82px 0 54px}.hero-copy{max-width:1000px;margin:auto}.hero-copy .eyebrow{font-size:17px;letter-spacing:0;margin-bottom:16px}.hero h1{font-size:clamp(36px,4.8vw,64px);line-height:1.25;letter-spacing:-.04em}.hero h1 span{white-space:nowrap}.hero-desc{font-size:clamp(18px,2vw,25px);color:var(--muted);line-height:1.55;max-width:650px;margin:23px auto 0}.actions{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:24px;margin-top:30px}.hero-devices{display:flex;justify-content:center;align-items:center;gap:95px;margin:48px auto 0;max-width:720px;padding:20px 20px 35px}.hero-device{object-fit:contain;filter:drop-shadow(0 20px 20px #00000015)}.hero-device.cdi{width:115px;height:190px}.hero-device.gateway{width:235px;height:320px}.hero-device.remote{width:110px;height:235px}.hero-bottom{font-size:12px;letter-spacing:.06em;color:var(--muted);margin-top:10px}.intro{background:var(--surface)}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:64px;margin-bottom:48px}.section-head h2,.assurance h2{font-size:clamp(32px,3.5vw,46px)}.section-head>p{font-size:17px;color:var(--muted);max-width:450px}.scenarios{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:44px}.scenario .index{color:var(--blue)}.index{font-size:12px;letter-spacing:.08em;color:var(--muted)}.scenario h3{font-size:25px;margin:15px 0 20px}.scenario-list{list-style:none;margin:0;padding:0;color:var(--muted);font-size:16px}.scenario-list li{margin:10px 0;line-height:1.8}.connection{background:#fff}.connection-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:80px;align-items:center}.connection h2{font-size:clamp(30px,3.1vw,42px);line-height:1.4}.connection-features{padding-left:22px;margin:28px 0;color:var(--ink);font-size:18px}.connection-features li{margin:14px 0}.connection p:not(.eyebrow){color:var(--muted);font-size:16px;margin:25px 0}.text-link{display:inline-flex;align-items:center;gap:14px;color:var(--blue);font-size:16px}.text-link:hover{text-decoration:underline}.text-link span{font-size:12px;color:var(--muted)}.architecture-image{display:block;padding:12px;border-radius:28px;background:var(--surface);overflow:hidden}.architecture-image img{width:100%;height:auto;border-radius:18px}.architecture-image span{display:block;text-align:center;color:var(--blue);font-size:14px;padding:12px 0 4px}.hardware{background:var(--surface)}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.product-card{background:#fff;border-radius:28px;overflow:hidden}.product-image{height:270px;position:relative;padding:60px 44px 20px}.product-image>span{position:absolute;top:25px;left:28px;font-size:13px;color:var(--muted)}.product-image img{width:100%;height:100%;object-fit:contain;transition:transform .35s}.product-card:hover .product-image img{transform:translateY(-5px)}.product-content{padding:20px 28px 32px}.product-content h3{font-size:24px;margin:10px 0 16px}.product-content p{font-size:16px;color:var(--muted)}.product-content ul{list-style:none;padding:20px 0 0;margin:22px 0 0;border-top:1px solid #e9e9ed}.product-content li{position:relative;font-size:15px;color:#55555b;margin:10px 0;padding-left:13px;line-height:1.85}.product-content li:before{content:"";position:absolute;top:12px;left:0;height:4px;width:4px;border-radius:50%;background:#86868b}.assurance{background:#fff}.assurance-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.track-image{position:relative;min-height:650px;height:100%;background:var(--surface);border-radius:28px;overflow:hidden}.track-image>img{position:absolute;width:100%;height:100%;object-fit:cover;object-position:55% center}.track-image:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#000000b0,transparent 60%)}.image-caption{position:absolute;bottom:34px;left:30px;right:24px;z-index:1;color:#f5f5f7;font-size:12px;letter-spacing:.07em}.image-caption span{display:block;color:#fff;font-size:27px;letter-spacing:-.02em;margin-top:10px;font-weight:500}.assurance-block+.assurance-block{margin-top:42px;padding-top:36px;border-top:1px solid #e5e5e9}.assurance-subtitle{font-size:21px;margin:16px 0 24px}.assurance-copy dl{margin:0}.assurance-copy dl>div{margin:15px 0;font-size:16px;line-height:1.85}.assurance-copy dt{display:inline;font-weight:600}.assurance-copy dt:after{content:"："}.assurance-copy dd{display:inline;margin:0;color:var(--muted)}.contact{padding:105px 0 75px;background:var(--surface)}.contact-head{display:flex;flex-direction:column;align-items:center;text-align:center;gap:28px}.contact h2{font-size:clamp(32px,3.8vw,48px)}.contact-head p{color:var(--muted);max-width:850px;font-size:18px;line-height:1.85}.contact-head .button{margin-top:3px}.contact-grid{display:grid;grid-template-columns:1fr 1.25fr .8fr;gap:35px;margin-top:65px}.contact-grid a{padding:25px 0;border-top:1px solid var(--line);display:flex;flex-direction:column;align-items:flex-start}.contact-grid span{font-size:14px;color:var(--muted)}.contact-grid strong{font-size:25px;line-height:1.5;font-weight:500;margin:12px 0 8px;overflow-wrap:anywhere}.contact-grid small{font-size:14px;color:var(--blue)}.contact-grid a:hover strong{color:var(--blue)}footer{padding:42px 0 22px;background:var(--surface);color:var(--muted)}.footer-top{display:flex;align-items:center;justify-content:space-between;gap:35px}.footer-top .brand span{color:var(--ink)}.footer-top p{font-size:13px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;margin-top:32px;border-top:1px solid var(--line);font-size:12px;letter-spacing:.02em}@media(max-width:1050px){.container{width:calc(100% - 56px)}.nav nav{gap:20px}.brand span{font-size:14px}.connection-grid,.assurance-grid{gap:44px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.scenarios{gap:28px}.contact-grid strong{font-size:21px}}@media(max-width:760px){html{scroll-padding-top:84px}.container{width:calc(100% - 40px)}.section{padding:68px 0}.nav-inner{height:68px;gap:15px}.brand span{font-size:14px}.brand small{font-size:11px}.nav nav:not(.mobile-nav),.nav-cta{display:none}.menu-button{display:block}.mobile-nav{display:flex;flex-direction:column;padding:12px 20px 22px;gap:16px!important}.hero-inner{padding:55px 0 35px}.hero-copy .eyebrow{font-size:15px}.hero h1{font-size:36px;max-width:11em;margin:auto;line-height:1.3}.hero-desc{font-size:19px;max-width:18em}.actions{gap:14px;margin-top:26px}.button{min-height:46px;padding:10px 20px;font-size:15px}.hero-devices{gap:28px;margin-top:30px;padding:20px 0;max-width:100%}.hero-device.cdi{width:60px;height:115px}.hero-device.gateway{width:140px;height:205px}.hero-device.remote{width:60px;height:135px}.section-head{flex-direction:column;align-items:flex-start;gap:22px;margin-bottom:35px}.section-head h2,.assurance h2{font-size:32px}.section-head>p{max-width:none;font-size:16px}.eyebrow{font-size:12px}.scenarios{grid-template-columns:1fr;gap:34px}.scenario h3{font-size:24px;margin:12px 0 16px}.scenario-list{font-size:16px}.connection-grid,.assurance-grid{grid-template-columns:1fr;gap:40px}.connection h2{font-size:32px}.connection-features{font-size:17px}.architecture-image{padding:8px;border-radius:20px}.architecture-image img{border-radius:14px}.product-grid{grid-template-columns:1fr;gap:20px}.product-image{height:265px;padding:58px 40px 18px}.product-card{border-radius:24px}.product-content{padding:20px 25px 30px}.product-content p,.product-content li{font-size:16px}.product-content li:before{top:13px}.track-image{min-height:380px;border-radius:24px}.image-caption{left:25px;bottom:26px}.assurance-block+.assurance-block{margin-top:32px;padding-top:30px}.assurance-subtitle{font-size:19px}.contact{padding:65px 0 35px}.contact h2{font-size:32px}.contact-head{gap:24px}.contact-head p{font-size:16px;text-align:left}.contact-grid{grid-template-columns:1fr;gap:0;margin-top:40px}.contact-grid strong{font-size:24px}.footer-top{flex-direction:column;align-items:flex-start;gap:22px}.footer-bottom{flex-direction:column;gap:8px}}@media(max-width:360px){.hero h1{font-size:32px}.hero-devices{gap:19px}.hero-device.gateway{width:120px;height:190px}.hero-device.cdi,.hero-device.remote{width:55px}.contact-grid strong{font-size:21px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}.version-switch{display:flex;justify-content:center;align-items:center;gap:22px;flex-wrap:wrap;padding:12px 20px;background:#f5f5f7;color:#1d1d1f;font:14px/1.6 -apple-system,BlinkMacSystemFont,PingFang SC,sans-serif;border-bottom:1px solid #dedee3}.version-switch-label{font-size:12px;color:#6e6e73}.version-switch a{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;color:#4a4a50;text-decoration:none}.version-switch a[aria-current=page]{background:#1d1d1f;color:#fff}.version-switch a:hover{box-shadow:inset 0 0 0 1px #a0a0a5}.version-switch a:focus-visible{outline:3px solid #0071e3;outline-offset:3px}.version-switch strong{font-weight:600}.version-switch small{font-size:12px}@media(max-width:760px){.version-switch{gap:8px;padding:10px 12px}.version-switch-label{width:100%;text-align:center}.version-switch a{padding:7px 12px;font-size:13px}.version-switch small{font-size:11px}}
