:root{--blue:#164bff;--ink:#182326;--muted:#637074;--paper:#f9faf6;--line:#dce2dc;font-family:Arial,'Malgun Gothic',sans-serif;color:var(--ink);background:var(--paper);scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit}::selection{background:#c3f4df;color:#142a24}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}section[id]{scroll-margin-top:35px}.wrap{max-width:1200px;width:calc(100% - 96px);margin:auto}.header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;font-size:23px;font-weight:800;letter-spacing:-1px}.brand img{border-radius:10px}.brand-dot{font-size:12px;align-self:flex-start}nav{display:flex;gap:30px;font-size:13px;font-weight:600}nav a:hover,.text-link:hover{color:var(--blue)}.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:50px;align-items:center;padding:75px 0 80px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;line-height:1.8}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--blue);margin-right:7px}h1{font-size:clamp(36px,4.1vw,58px);letter-spacing:-3px;line-height:1.25;margin:28px 0}.highlight{background:linear-gradient(transparent 65%,#c3f4df 65%)}.lead{font-size:15px;line-height:1.95;color:var(--muted);word-break:keep-all}.actions{display:flex;gap:24px;align-items:center;margin-top:30px}.button{display:inline-flex;padding:16px 20px;border-radius:6px;font-size:13px;font-weight:700;gap:24px;align-items:center}.primary{background:var(--blue);color:white}.button:hover{filter:brightness(.92)}.text-link{font-size:12px;font-weight:700}.release{font-size:10px;color:var(--muted);margin-top:22px}.release .dot{background:#7f8b84;width:5px;height:5px}.hero-art{position:relative;min-height:410px;background:#e9efec;border:1px solid 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22px;word-break:keep-all}.muted,p{line-height:1.85}.muted{font-size:13px;color:var(--muted)}.demo-section{display:grid;grid-template-columns:1fr 1.25fr;gap:80px;align-items:center}.demo-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px 30px;box-shadow:0 10px 25px #18232604}.demo-top{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:bold}#demo-toggle{display:flex;align-items:center;gap:9px;background:none;border:0;cursor:pointer;padding:6px}#demo-label{font-size:10px;width:25px}.switch-track{display:block;width:42px;height:24px;background:#d6ddd9;border-radius:20px;padding:3px}.switch-track span{display:block;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .2s}button[aria-checked=true] .switch-track{background:var(--blue)}button[aria-checked=true] .switch-track span{transform:translateX(18px)}.demo-text{font-size:19px;line-height:1.9;word-break:keep-all;margin:25px 0;user-select:text}.locked{user-select:none;-webkit-user-select:none;color:#8b9590}.demo-status{font-size:11px;color:var(--blue);border-top:1px solid var(--line);padding-top:17px}.caption{font-size:10px;color:var(--muted);margin-bottom:0}.how{background:#edf1eb}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;margin-top:45px}.step-no{font-size:12px;color:var(--blue);font-family:monospace}h3{font-size:20px;letter-spacing:-.5px;margin:20px 0 12px}.steps p{font-size:13px;color:var(--muted);word-break:keep-all}.privacy-summary{display:grid;grid-template-columns:1fr 1fr;gap:100px;border-bottom:1px solid var(--line)}.privacy-list>div{border-bottom:1px solid var(--line);padding:18px 0}.privacy-list>div:first-child{padding-top:0}.privacy-list>div:last-child{border:0}.privacy-list b{font-size:15px}.privacy-list p{font-size:13px;color:var(--muted);margin-bottom:0}.faq{max-width:850px}.faq h2{margin-bottom:35px}details{border-top:1px solid var(--line)}details:last-child{border-bottom:1px solid var(--line)}summary{padding:21px 0;font-size:15px;font-weight:600;cursor:pointer}details p{font-size:13px;color:var(--muted);max-width:720px;margin:0 0 22px}.support{background:var(--blue);color:white;border-radius:12px;display:flex;justify-content:space-between;align-items:center;padding:42px 48px;gap:25px}.support h2{font-size:29px}.support p:not(.eyebrow){font-size:13px;color:#d7e0ff}.light{background:white;color:var(--blue);flex-shrink:0}.footer{display:flex;align-items:center;flex-wrap:wrap;gap:20px;padding-block:45px}.footer .brand{font-size:20px}.footer p{font-size:12px;color:var(--muted)}.footer>div{margin-left:auto;display:flex;gap:25px;font-size:12px}.footer small{width:100%;font-size:10px;color:var(--muted)}.skip{position:absolute;top:-100px;padding:12px;background:white;z-index:5}.skip:focus{top:0}.policy{max-width:850px;padding-block:55px 80px}.policy h1{font-size:42px;letter-spacing:-1.5px}.policy h2{font-size:23px;margin-top:34px}.policy p,.policy li{font-size:15px;line-height:1.9}.policy a{text-decoration:underline;color:var(--blue)}.policy .meta{font-size:13px;color:var(--muted)}.policy hr{border:0;border-top:1px solid var(--line);margin:50px 0}
@media(max-width:900px){.wrap{width:calc(100% - 40px)}.hero{gap:25px}.hero-art{min-height:330px}.hero-icon{width:210px}.actions{flex-wrap:wrap;gap:15px}h1{letter-spacing:-2px}.demo-section,.privacy-summary{gap:35px}.steps{gap:25px}.support{padding:30px}.header nav{gap:15px}}
@media(max-width:640px){.header{height:auto;min-height:100px;flex-wrap:wrap;gap:18px;padding-block:20px}.brand{font-size:21px}nav{width:100%;justify-content:space-between;font-size:12px}.hero{grid-template-columns:1fr;padding-block:40px}.hero h1{font-size:42px}.hero-art{min-height:320px}.hero-icon{width:210px}.hero-copy .eyebrow{font-size:8px}.facts-inner{flex-direction:column;gap:14px}.section{padding-block:55px}.demo-section,.privacy-summary,.steps{grid-template-columns:1fr}.demo-section{gap:22px}.demo-card{padding:22px}.demo-text{font-size:18px}h2{font-size:29px}.steps{gap:20px;margin-top:30px}.steps article{border-top:1px solid #d4ddd4;padding-top:20px}.steps h3{margin-top:12px}.support{flex-direction:column;align-items:flex-start;padding:27px}.support h2{font-size:25px}.footer>div{margin-left:0}.footer{gap:14px}.footer p{width:100%;margin:0}.policy h1{font-size:31px}.desktop{display:none}}
.header{height:auto;min-height:100px;flex-wrap:wrap;gap:16px;padding-block:20px}.language-nav{display:flex;gap:3px;align-items:center;border:1px solid var(--line);border-radius:7px;padding:3px;font-size:11px}.language-nav a{padding:7px 9px;border-radius:4px;white-space:nowrap}.language-nav a[aria-current=page]{background:var(--blue);color:#fff}.language-nav a:hover:not([aria-current]){background:#e8ece6}html[lang=en] .hero h1{letter-spacing:-2px}html[lang=en] .facts b{margin-left:10px}html[lang=en] .support h2{font-size:30px}.support a{overflow-wrap:anywhere}
@media(max-width:900px){.header>.brand{margin-right:auto}.header>nav:not(.language-nav){gap:14px}.header>.language-nav{width:auto;justify-content:flex-start}.facts-inner{flex-wrap:wrap}html[lang=en] .hero{grid-template-columns:1fr 1fr}.header>nav:not(.language-nav){font-size:12px}}
@media(max-width:640px){.header>.language-nav{width:100%;justify-content:center}.header>nav:not(.language-nav){flex-wrap:wrap}html[lang=en] .hero{grid-template-columns:1fr}html[lang=en] .hero h1{font-size:42px}.support .button{max-width:100%}.policy h1{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*{transition:none!important}}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] p{word-break:normal;overflow-wrap:anywhere}@media(max-width:360px){.hero h1,html[lang="en"] .hero h1{font-size:36px}.hero-icon{width:190px}.hero-art{min-height:290px}}