:root{color-scheme:dark;--bg:#080b12;--text:#f3f6f7;--muted:#a1a9b8;--line:#252b37;--cyan:#87f6db;--purple:#b89af9}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:6px}img{display:block;max-width:100%;height:auto}header{max-width:1440px;margin:auto;padding:24px 5%;display:flex;align-items:center;justify-content:space-between;gap:24px;position:relative;z-index:3;border-bottom:1px solid #ffffff0d}.brand{display:inline-flex;align-items:center;gap:12px;font-size:21px;letter-spacing:-.6px;white-space:nowrap}.brand img{border-radius:10px}.brand b{color:var(--cyan);font-weight:500}nav{display:flex;align-items:center;gap:32px;font-size:14px}nav>a{min-height:44px;display:flex;align-items:center}nav>a:hover,.text-link:hover,.footer-links a:hover{color:var(--cyan)}.nav-cta{border:1px solid #4b5565;border-radius:7px;padding:0 18px;gap:20px}.language{color:var(--muted)}main{overflow:hidden}.hero{max-width:1440px;margin:0 auto;min-height:690px;display:grid;grid-template-columns:1.1fr 1fr;align-items:center;padding:70px 5% 80px;gap:3%}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:600;color:var(--cyan);margin:0 0 27px;display:flex;align-items:center;gap:10px}.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 13px #87f6db8c}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(56px,6.8vw,96px);line-height:1.04;letter-spacing:-5px;font-weight:580;margin-bottom:30px}h1 em{font-style:normal;color:var(--cyan)}.lead{font-size:18px;line-height:1.8;color:var(--muted);max-width:500px;font-weight:400}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:28px;margin-top:36px}.button{display:inline-flex;justify-content:center;align-items:center;gap:30px;min-height:54px;padding:16px 23px;border-radius:6px;font-size:14px;font-weight:650;transition:transform .2s,background .2s}.button:hover{transform:translateY(-2px)}.primary{background:var(--cyan);color:#08251f}.primary:hover{background:#adffe8}.text-link{font-size:14px;font-weight:550;line-height:1.6}.platforms{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:11px;color:#9ca6b7;margin-top:28px}.platforms i{width:3px;height:3px;background:#626b7e;border-radius:50%}.hero-art{min-width:0;position:relative;aspect-ratio:1;display:grid;place-items:center;isolation:isolate}.hero-art:before{content:"";position:absolute;width:100%;height:100%;background:radial-gradient(ellipse,#074d5a32,transparent 68%);z-index:-1}.hero-icon{width:76%;border-radius:26%;overflow:hidden;transform:rotate(-7deg);box-shadow:0 35px 80px #0009,0 0 0 1px #ffffff10}.hero-icon img{width:100%}.orbit{position:absolute;border:1px solid #85f4e318;border-radius:50%;width:110%;height:40%;transform:rotate(-32deg);z-index:-1}.orbit-two{width:98%;height:82%;transform:rotate(50deg);border-color:#a286d616}.art-label{position:absolute;font-size:9px;letter-spacing:2px;color:#a7b4c9}.label-top{right:0;top:6%}.label-bottom{left:5%;bottom:2%}.protocol-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:24px;padding:29px max(5%,calc((100% - 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1170px)/2));align-items:center;border-block:1px solid var(--line)}.phone-wrap{display:flex;align-items:center;flex-direction:column;position:relative}.phone-wrap:before{content:"";position:absolute;inset:20% -20%;border-radius:50%;background:radial-gradient(ellipse,#4d325d44,transparent 66%)}.phone{position:relative;max-width:290px;border-radius:40px;padding:8px;border:1px solid #546071;background:#040608;transform:rotate(-3deg);box-shadow:0 30px 60px #0008}.phone img{border-radius:32px}.phone-caption{font-size:10px;color:#96a3b5;position:relative;margin-top:35px}.playback-copy .lead{font-size:16px}.feature-row{display:flex;gap:24px;padding-top:20px;margin-top:20px;border-top:1px solid #ffffff15}.feature-row>span{font-size:24px;color:var(--cyan);width:28px;flex:none}.feature-row h3{font-size:18px;margin:0 0 8px}.feature-row p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:55px}.step-number{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #344050;padding:0 0 20px;font-size:52px;font-weight:300;color:#8696a6}.step-number span{font-size:26px;color:var(--cyan)}.steps h3{margin-top:27px}.network-note{display:flex;align-items:center;gap:22px;padding:25px 30px;margin-top:40px;border:1px solid var(--line);border-radius:8px;background:#0e131c}.network-note>span{font-size:32px;color:var(--cyan)}.network-note p{font-size:12px;line-height:1.9;color:var(--muted);margin:0;max-width:800px}.network-note a{font-size:12px;white-space:nowrap;margin-left:auto;color:var(--cyan)}.availability{text-align:center;padding:100px 24px 110px;background:radial-gradient(ellipse at 50% 100%,#16443945,transparent 70%);border-top:1px solid var(--line)}.availability>img{border-radius:20px;margin:0 auto 28px}.availability .eyebrow{justify-content:center;margin-bottom:22px}.availability h2{font-size:clamp(38px,5vw,66px)}.availability p:not(.eyebrow){color:var(--muted);line-height:1.9;font-size:16px;max-width:620px;margin:0 auto 30px}.quiet-link{display:block;font-size:12px;margin-top:22px;color:#b1bccb;text-decoration:underline;text-underline-offset:5px}footer{padding:55px 5% 25px;max-width:1440px;margin:auto;display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;border-top:1px solid var(--line)}footer p{font-size:12px;color:var(--muted);margin:18px 0 0}.footer-links{display:flex;gap:30px;font-size:12px;align-items:flex-start;padding-top:12px}.copyright{width:100%;display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:25px;margin-top:30px;color:#909baa;font-size:10px;line-height:1.8}.page-intro{max-width:1296px;margin:auto;padding:95px 0 65px}.page-intro h1{font-size:clamp(50px,6vw,80px);letter-spacing:-3px}.support-grid{max-width:1296px;margin:0 auto 110px;display:grid;grid-template-columns:1.5fr 1fr;gap:8%}.faq details{border-top:1px solid var(--line)}.faq details:last-child{border-bottom:1px solid var(--line)}summary{cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 0;font-size:17px;line-height:1.5;list-style:none}summary::-webkit-details-marker{display:none}summary span{color:var(--cyan);font-size:24px}details[open] summary span{transform:rotate(45deg)}details p{color:var(--muted);font-size:14px;line-height:1.9;padding-right:30px;padding-bottom:20px}.contact-card{padding:35px;border-radius:10px;background:#111a26;align-self:start;border:1px solid var(--line)}.contact-card h2{font-size:34px}.contact-card p{font-size:14px;line-height:1.9;color:var(--muted)}.contact-card .text-link{color:var(--cyan);overflow-wrap:anywhere}.contact-card p.small{font-size:11px;margin-top:24px}.prose{max-width:820px;margin:0 auto 100px}.prose section{margin-bottom:38px}.prose h2{font-size:23px;letter-spacing:-.5px;margin-bottom:15px}.prose p{font-size:16px;color:var(--muted);line-height:2}.skip{position:fixed;left:20px;top:-80px;background:var(--cyan);color:#000;padding:12px;z-index:10}.skip:focus{top:10px}html[lang=zh-CN] h1{font-size:clamp(47px,5.4vw,78px);line-height:1.23;letter-spacing:-2.8px}html[lang=zh-CN] h2{line-height:1.3;letter-spacing:-1.4px}
@media(min-width:1440px){.showcase,.setup,.page-intro,.support-grid{max-width:1200px}.hero{min-height:730px}}@media(max-width:1370px){.showcase,.setup,.page-intro,.support-grid{margin-left:6%;margin-right:6%}.prose{margin-left:auto;margin-right:auto;width:88%}}@media(max-width:900px){header{padding:18px 5%}nav{gap:20px}.nav-cta{display:none}.hero{padding-top:65px;min-height:580px}h1{letter-spacing:-3px;font-size:62px}.lead{font-size:16px}.hero-art{align-self:center}.protocol-strip{flex-wrap:wrap;justify-content:center}.protocol-strip span:first-child{width:100%;text-align:center}.section-heading{align-items:start;gap:30px}.section-heading>p{max-width:320px}.showcase,.setup{padding-top:80px;padding-bottom:80px}.control-notes{gap:24px}.playback{gap:7%;padding:70px 6%}.playback-copy h2{font-size:39px}.steps{gap:25px}.network-note{flex-wrap:wrap}.network-note p{flex:1;min-width:200px}.network-note a{margin-left:55px}.support-grid{grid-template-columns:1fr;gap:40px}.contact-card{max-width:600px}.footer-links{gap:20px}}
@media(max-width:600px){header{gap:15px}.brand{gap:8px;font-size:18px}.brand img{width:32px;height:32px}nav{gap:18px;font-size:12px}.nav-feature{display:none}.hero{display:flex;flex-direction:column;padding:54px 6% 34px;gap:25px;min-height:0}.hero-copy{width:100%}.hero h1{font-size:63px;letter-spacing:-3.5px}.hero .eyebrow{font-size:9px;margin-bottom:23px}.hero .lead{font-size:15px;line-height:1.85}.actions{gap:24px;margin-top:26px}.button{min-height:51px;padding:15px 19px;font-size:13px;gap:20px}.text-link{font-size:12px}.platforms{font-size:10px;margin-top:23px}.hero-art{width:87%;max-width:360px}.hero-icon{width:70%}.art-label{font-size:7px;letter-spacing:1.3px}.label-top{top:10%}.label-bottom{bottom:5%}.protocol-strip{padding:23px 6%;gap:20px 28px}.protocol-strip strong{font-size:21px}.protocol-strip span:last-child{width:100%;text-align:center;font-size:9px}.protocol-strip span:first-child{font-size:9px}.section-heading{display:block;margin-bottom:32px}.section-heading h2{font-size:38px;letter-spacing:-1.8px}.section-heading>p{margin-top:22px;max-width:none;font-size:14px}.showcase,.setup{padding:64px 0}.eyebrow{font-size:9px;letter-spacing:1.5px;margin-bottom:22px}.tablet{padding:5px;border-radius:12px}.tablet img{border-radius:7px}figcaption{font-size:10px;text-align:left;margin-top:15px}.control-notes{display:block;margin-top:36px}.control-notes>div{margin-top:25px;padding-top:18px}.control-notes h3{font-size:19px;margin-top:10px}.control-notes p{font-size:13px}.playback{display:flex;flex-direction:column-reverse;padding:60px 6%;gap:45px}.playback-copy h2{font-size:40px}.phone{max-width:240px;border-radius:34px}.phone img{border-radius:26px}.phone-caption{margin-top:26px}.feature-row{gap:17px}.steps{display:block;margin-top:35px}.steps article{margin-bottom:35px}.step-number{font-size:42px;padding-bottom:13px}.steps h3{margin-top:20px;font-size:21px}.steps p{font-size:14px}.network-note{padding:20px;gap:15px}.network-note>span{display:none}.network-note p{min-width:0;flex-basis:100%;font-size:12px}.network-note a{margin:0}.setup h2{font-size:36px}.availability{padding:64px 6% 70px}.availability p:not(.eyebrow){font-size:14px}.availability h2{font-size:36px}footer{padding:35px 6% 25px;display:block}.footer-links{flex-wrap:wrap;margin-top:25px;gap:18px 25px}.copyright{display:block;margin-top:30px;font-size:9px}.copyright span{display:block;margin-top:10px}.page-intro{padding:60px 0 30px}.page-intro h1{font-size:48px;letter-spacing:-2.6px}.support-grid{margin-bottom:65px}summary{font-size:16px;padding:20px 0}.contact-card{padding:25px}.prose{margin-bottom:60px}.prose h2{font-size:21px}.prose p{font-size:14px}html[lang=zh-CN] .hero h1{font-size:46px;letter-spacing:-2px}html[lang=zh-CN] .page-intro h1{font-size:43px;letter-spacing:-2px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}
/* Product detail and English screenshot gallery. */
button{font:inherit;color:inherit}button:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}[hidden]{display:none!important}.gallery-tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:28px}.gallery-tab{cursor:pointer;background:#101823;border:1px solid #384354;border-radius:100px;padding:13px 23px;font-size:13px;min-height:44px}.gallery-tab[aria-pressed=true]{background:var(--cyan);border-color:var(--cyan);color:#09271f}.gallery-panel{margin:0}.gallery-panel figcaption{max-width:800px}.gallery-panel figcaption strong{display:block;color:#f3f6f7;font-size:21px;margin:25px 0 8px;font-weight:500}.gallery-panel figcaption span{font-size:14px;line-height:1.8;display:block}.image-note{font-size:12px;color:#a1adbd;line-height:1.9;margin:26px auto 0;max-width:900px;text-align:center}.image-note a{text-decoration:underline;text-underline-offset:4px}.project-section,.hardware-section,.testflight-content{max-width:1200px;margin:0 auto;padding:90px 0}.project-section{border-top:1px solid var(--line)}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:44px;margin:55px 0 40px}.principle-mark{color:var(--cyan);font-size:12px;letter-spacing:2px}.principles h3{margin:19px 0 15px;font-size:24px}.principles p,.scope-note p,.product-copy p{font-size:14px;line-height:1.9;color:var(--muted);margin-bottom:0}.scope-note{padding:30px 34px;border-left:2px solid var(--cyan);background:#111923}.scope-note h3{margin:0 0 12px;font-size:20px}.hardware-section{padding-top:40px;padding-bottom:100px}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.product-card{min-width:0;display:flex;flex-direction:column;border:1px solid var(--line);background:#0e141f;border-radius:12px;overflow:hidden}.product-photo{background:#fff;aspect-ratio:1.2;display:flex;align-items:center;justify-content:center;padding:15px}.product-photo img{object-fit:contain;max-height:100%;width:100%}.product-copy{padding:26px;display:flex;align-items:start;flex-direction:column;flex:1}.product-copy .product-protocol{font-size:10px;color:var(--cyan);letter-spacing:1px}.product-copy h3{font-size:27px;letter-spacing:-.6px;margin:12px 0}.product-copy h4{font-size:16px;font-weight:500;line-height:1.6;margin:0 0 12px}.product-copy .text-link{color:var(--cyan);margin-top:auto;padding-top:24px;min-height:44px}.availability .availability-note{font-size:11px!important;margin:24px auto 0!important}.intro-note{font-size:12px;line-height:1.8;color:var(--muted);margin-top:20px}.testflight-content{padding-top:0}.testflight-content>.steps{margin-bottom:80px}.feedback-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:8%}.feedback-grid h2{font-size:40px}.feedback-grid ul{padding-left:20px;color:var(--muted);font-size:15px;line-height:1.9}.feedback-grid li{padding:6px 0}.feedback-grid .contact-card h2{font-size:27px}.testflight-content .steps p{font-size:15px}.gallery-panel .tablet a{display:block}.gallery-panel .tablet a:hover{filter:brightness(1.06)}
@media(max-width:1370px){.project-section,.hardware-section,.testflight-content{margin-left:6%;margin-right:6%}}@media(max-width:1000px){.product-copy{padding:20px}.principles{gap:28px}.nav-project{display:none}}@media(max-width:700px){.project-section,.hardware-section{padding:65px 0}.principles,.product-grid,.feedback-grid{grid-template-columns:1fr}.principles{gap:30px;margin-top:35px}.principles h3{font-size:23px;margin-top:13px}.scope-note{padding:24px}.product-card{max-width:460px;margin:auto;width:100%}.product-photo{aspect-ratio:1.5}.gallery-tabs{gap:7px;justify-content:flex-start;margin-bottom:20px}.gallery-tab{font-size:12px;padding:10px 16px}.gallery-panel figcaption strong{font-size:19px;text-align:left}.gallery-panel figcaption span{text-align:left;font-size:13px}.image-note{text-align:left;font-size:11px}.testflight-content>.steps{margin-bottom:50px}.feedback-grid{gap:30px}.feedback-grid h2{font-size:34px}.testflight-content{padding-bottom:65px}.hardware-section .section-heading h2,.project-section .section-heading h2{font-size:36px}}