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@media(min-width:1500px){.hero-copy{width:46%}.hero .lead{max-width:600px}}@media(max-width:1100px){.site-nav{display:none}.site-header{gap:14px}.menu-toggle{display:block}.section{padding-left:36px;padding-right:36px}.section-dots span{display:none}.scroll-hint{left:36px}}@media(max-width:900px){.site-header{padding:14px 20px;gap:12px}.header-actions{gap:8px}.section{padding:110px 24px 70px}.hero{flex-direction:column;padding-top:160px;align-items:flex-start;gap:15px}.hero-copy{width:100%}.hero .lead{min-width:0;max-width:560px}.hero-orbit{width:82%;height:42vh;min-height:290px;margin:auto}.hero h1{font-size:clamp(40px,7.5vw,64px)}.float-chip{font-size:11px;padding:9px 12px;max-width:180px}.model-chip img{width:22px;height:22px}.lead{font-size:15px}.section-dots{display:none}.scroll-hint{left:24px;bottom:20px}.prompt-capsule{width:86%;padding:15px 20px;font-size:14px}.prompt-copy h2{font-size:36px}.prompt-copy .lead{max-width:80%}.capabilities{padding:0 16px;gap:8px}.capabilities .glass-button{padding:10px 14px;font-size:12px}.footer-main{grid-template-columns:repeat(3,1fr);gap:28px}.footer-brand{grid-column:1/-1}.footer-bottom{flex-wrap:wrap}.voice-copy{padding-bottom:25vh}.app-download{font-size:12px;padding:7px 10px}.document-card{padding:28px}.download-cards{grid-template-columns:1fr}.download-hero h1{font-size:34px}}@media(max-width:600px){.site-brand{font-size:14px;gap:7px}.site-brand img{width:28px;height:28px}.header-actions{gap:5px}.header-signin{font-size:12px;padding:7px 10px}.language{display:none}.app-download .download-label{display:none}.site-header{padding:12px 14px}.hero{padding-top:140px}.hero h1{font-size:40px}.hero-orbit{width:95%}.hero-buttons{gap:10px}.hero .lead{max-width:100%;font-size:14px}.footer-main{grid-template-columns:repeat(2,1fr)}.hero-buttons a{padding:12px 17px}.eyebrow{font-size:10px;letter-spacing:.05em}.gift-link{font-size:11px}.marquee-track .model-chip{font-size:12px;padding:14px}.prompt-copy .lead{max-width:90%}.section h2{font-size:34px}.prompt-copy{bottom:calc(50% + 95px)}.capabilities{top:calc(50% + 85px)}.voice-copy{padding-bottom:28vh}.hero-orbit .float-chip:nth-child(n+9){display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
@media(max-width:600px){.hero-orbit .float-chip{max-width:140px;font-size:10px;padding:9px}.hero-orbit .float-chip:nth-child(3){left:80%!important}.hero-orbit .float-chip:nth-child(5){left:82%!important}.hero-orbit .float-chip:nth-child(8){left:76%!important}}

::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:#08090e}::-webkit-scrollbar-thumb{background:#373840;border-radius:8px;border:2px solid #08090e}

@media(max-width:600px){.hero-orbit .float-chip:nth-child(1),.hero-orbit .float-chip:nth-child(4),.hero-orbit .float-chip:nth-child(6){left:24%!important}}

.language-flag{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:#ed2434;color:#ffe15a;font-size:12px;box-shadow:0 0 0 1px #ffffff21;margin-right:5px}

html:has(.landing){scroll-padding-top:0}.models-section .marquee-lane{padding:15px 0}

.download-page{background:#101010;color:#f3f5f6}.download-shell{width:min(776px,calc(100% - 40px));margin:54px auto 40px}.download-brand{display:flex;align-items:center;gap:14px;margin-bottom:18px;width:max-content}.download-brand>img{width:50px;height:50px;border-radius:14px;border:1px solid #ffffff16;background:#070b12;padding:8px}.download-brand>span{display:flex;flex-direction:column;gap:1px}.download-brand strong{font-size:20px;font-weight:750}.download-brand small{font-size:14px;color:#8f979e}.install-card{padding:22px;border:1px solid #ffffff09;border-radius:18px;background:#202124;box-shadow:0 12px 28px #0006}.install-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:18px;background:#00c5df13;color:#07c3dc;font-size:12px;font-weight:700}.install-badge .ico{width:15px;height:15px}.install-card h1{font-size:27px;letter-spacing:-.02em;margin:7px 0 4px;line-height:1.5}.install-intro{font-size:14px;color:#8f989f;margin:0 0 20px}.install-platforms{display:grid;grid-template-columns:1fr 1fr;gap:12px}.install-platform-head{display:flex;align-items:center;gap:12px;background:#26282b;border:1px solid #ffffff09;border-radius:16px;padding:12px}.platform-symbol{width:40px;height:40px;border-radius:11px;background:#35373b;display:grid;place-items:center;font-size:20px;flex:none}.install-platform-head>div:nth-child(2){display:flex;flex-direction:column;min-width:0;flex:1}.install-platform-head strong{font-size:15px}.install-platform-head small{font-size:11px;color:#90989e;white-space:nowrap}.install-platform-head button{display:flex;align-items:center;gap:5px;border-radius:24px;background:#00bed6;box-shadow:0 4px 16px #00bed61c;color:white;padding:9px 13px;font-size:13px;font-weight:700;white-space:nowrap}.install-platform-head button .ico{width:16px;height:16px}.install-qr{display:flex;align-items:center;gap:12px;margin-top:8px;padding:12px;border:1px dashed #ffffff0b;border-radius:15px;min-height:128px}.install-qr>img{width:100px;height:100px;background:white;border-radius:6px;flex:none}.install-qr strong{font-size:14px}.install-qr p{font-size:12px;line-height:1.5;color:#90989f;margin:4px 0 7px}.install-qr button{background:none;border:1px solid #ffffff13;border-radius:18px;padding:5px 10px;font-size:12px;white-space:nowrap}.install-qr button .ico{width:14px;height:14px}.install-notes{margin-top:17px;font-size:12px;line-height:1.7}.install-notes ul{margin:3px 0 0;padding-left:18px;color:#90999f}.install-notes li{padding-bottom:3px}.install-web-link{display:block;text-align:center;color:#979ea4;font-size:14px;margin:28px auto;width:max-content}.install-web-link:hover{color:#04c7de}@media(max-width:650px){.download-shell{margin-top:26px;width:calc(100% - 28px)}.download-brand strong{font-size:18px}.install-card{padding:16px}.install-card h1{font-size:23px}.install-platforms{grid-template-columns:1fr;gap:16px}.install-badge{font-size:10px}.install-qr>img{width:96px;height:96px}.install-platform-head small{font-size:11px}.install-notes{font-size:12px}.install-intro{font-size:13px}}

html:has(.download-page){background:#101010}.download-page{display:flow-root;min-height:100svh}

/* Chinese brand wordmark */
.site-brand span{letter-spacing:.08em;white-space:nowrap}

/* Five particle scenes: local WebGL, with the reference layout and scroll rhythm. */
.cosmos:before{content:"";position:absolute;inset:0;background-image:radial-gradient(1px 1px at 20px 30px,#bec9ff99,transparent),radial-gradient(1px 1px at 97px 120px,#fff7,transparent);background-size:170px 193px}
.cosmos canvas{position:relative;opacity:0;transition:opacity .8s}.cosmos canvas.particle-ready{opacity:1}
.hero-copy{container-type:inline-size}.hero .gift-link{font-size:clamp(9px,3.35cqw,12px);white-space:nowrap}
.models-section,.begin-section{align-items:center}.voice-copy{padding-bottom:17vh}
.begin-section{text-align:center}.begin-copy{max-width:760px;padding:45px 30px;position:relative}.begin-copy:before{content:"";position:absolute;inset:-15%;z-index:-1;background:radial-gradient(ellipse,#050508c9 5%,#05050888 40%,transparent 70%);pointer-events:none}
.begin-section h2{line-height:1.25}.begin-section h2 span{background:linear-gradient(110deg,#fff,#c7caff 65%,#dca6f5);color:transparent;background-clip:text}
.begin-section .lead{margin:0 auto 32px}.begin-section .hero-buttons{justify-content:center;flex-wrap:wrap}
@media(max-width:900px){.hero-orbit{width:82%;height:42vh;min-height:290px;margin:20px auto 35px}.voice-copy{padding-bottom:25vh}.prompt-section h2{font-size:clamp(26px,5vw,36px)}.begin-copy{padding:32px 0}.begin-section h2{font-size:clamp(36px,7vw,58px)}}
@media(max-width:420px){.hero-orbit{width:76%}.hero .gift-link{white-space:normal}.prompt-capsule{font-size:13px;padding:16px 18px;gap:9px}.prompt-capsule .send{flex-shrink:0}.begin-section .hero-buttons{gap:10px}}
@media(max-height:600px){.prompt-section{min-height:660px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.landing *{animation:none!important;transition:none!important}}
.particle-toggle{position:absolute;left:160px;bottom:26px;font-size:12px;color:#9398ab;border:1px solid #ffffff20;border-radius:20px;background:#0b0d1480;padding:4px 12px;z-index:2}.particle-toggle:hover{color:#c7dfff;border-color:#8eceec66}@media(max-width:900px){.particle-toggle{left:125px}}