:root{color-scheme:dark;--bg:#182021;--panel:#202a2b;--text:#eae8de;--muted:#b7bfba;--sage:#a8bea5;--line:rgba(234,232,222,.16);--serif:Georgia,'Times New Roman','Songti SC','Noto Serif CJK SC',serif;--sans:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}button{border:0}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--sage);outline-offset:6px;border-radius:4px}::selection{background:var(--sage);color:var(--bg)}img{max-width:100%;display:block;height:auto}figure,p,h1,h2,h3{margin:0}h1,h2,h3{font-weight:400}h1,h2{font-family:var(--serif);letter-spacing:-.045em;line-height:1.08;text-wrap:balance}h2{font-size:clamp(38px,4.2vw,56px)}h2 em{font-style:normal;color:var(--sage)}.container{width:min(1120px,calc(100% - 96px));margin-inline:auto}.section-space{padding-block:112px}.section-panel{background:var(--panel)}.eyebrow{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--sage);font-weight:600;margin-bottom:24px}.tiny-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--sage);flex-shrink:0}.site-header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid rgba(234,232,222,.055)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;gap:10px;align-items:center;font-family:var(--serif);font-size:25px;letter-spacing:-.04em}.brand img{border-radius:9px}.desktop-nav{display:flex;gap:32px;margin-left:auto}.desktop-nav a{font-size:13px;color:var(--muted);transition:color .2s}.desktop-nav a:hover{color:var(--text)}.header-actions{display:flex;align-items:center;gap:18px;margin-left:24px}.language-switch{display:flex;align-items:center;gap:8px;font-size:12px;white-space:nowrap}.language-switch button{min-width:28px;min-height:44px;padding:10px 2px;background:none;color:var(--muted)}.language-switch [aria-pressed=true]{color:var(--sage)}.language-switch>span{color:#65736e}.menu-toggle{display:none;background:none;width:36px;height:40px;padding:8px}.menu-toggle span{display:block;height:1px;background:var(--text);margin:6px 0}.mobile-nav{padding:6px 24px 22px;gap:12px}.mobile-nav a{display:block;padding:10px;font-size:15px}.mobile-nav[hidden]{display:none}.skip-link{position:fixed;z-index:99;top:-100px;left:10px;padding:10px 18px;background:var(--sage);color:var(--bg)}.skip-link:focus{top:10px}
.hero{text-align:center;padding-top:76px;padding-bottom:34px}.hero-eyebrow{display:flex;gap:10px;align-items:center;justify-content:center;margin-bottom:27px;letter-spacing:.16em}.hero h1{font-size:clamp(48px,6.2vw,82px)}.hero h1 em{color:var(--sage);font-weight:400}.hero-description{margin:25px auto 28px;color:var(--muted);font-size:17px}.button{display:inline-flex;align-items:center;justify-content:center;gap:27px;background:var(--sage);color:var(--bg);border-radius:28px;padding:13px 25px;font-size:14px;font-weight:600;transition:background .2s,transform .2s}.button:hover{background:#bbceb8;transform:translateY(-2px)}.button span:last-child{font-size:18px;font-weight:400}.platform{font-size:11px;color:var(--muted);margin-top:12px}.hero-illustrations{display:grid;grid-template-columns:1.65fr 1fr;gap:48px;margin-top:-2px;align-items:end}.hero-illustrations figure>img{width:100%;height:310px;object-fit:contain}.hero-illustrations figcaption{display:flex;flex-direction:column;font-size:14px;gap:2px;margin-top:14px}.hero-illustrations strong{font-weight:500}.hero-illustrations figcaption span{font-size:12px;color:var(--muted)}.wireless-figure{color:var(--sage)}.hero-footnote{display:flex;align-items:center;gap:20px;margin-top:48px;color:var(--muted);font-size:10px;letter-spacing:.07em}.hero-footnote .line{flex:1;height:1px;background:var(--line)}
.story{padding-block:92px}.story-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:70px;align-items:center}.story h2{font-size:clamp(36px,3.8vw,49px);margin-bottom:29px}.story-copy{font-family:var(--serif);font-size:21px;line-height:1.6;letter-spacing:-.012em}.story-copy p+p{margin-top:20px}.story-art{padding-top:26px}.story-art>img{width:100%}.pair-captions{display:grid;grid-template-columns:1fr 1fr;gap:10px;text-align:center;margin-top:-16px;font-size:13px}.pair-captions p:last-child{color:var(--sage)}.pair-captions small{display:block;color:var(--muted);font-size:11px;margin-top:4px}
.how{display:grid;grid-template-columns:1fr 1fr;gap:110px;align-items:center}.how-copy>p:not(.eyebrow){font-size:17px;line-height:1.8;color:var(--muted);margin-top:24px;max-width:450px}.quiet-note{display:flex;gap:15px;align-items:flex-start;border-top:1px solid var(--line);padding-top:22px;margin-top:31px;font-size:13px;color:var(--sage);max-width:400px}.quiet-note>span{font-size:23px;line-height:1.1}.demo{max-width:408px;width:100%;justify-self:end}.preview-label{display:flex;align-items:center;gap:8px;font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}.preview-label .tiny-dot{width:4px;height:4px}.preview-rule{height:1px;background:var(--line);flex:1;margin-left:8px}.menu-bar{display:flex;align-items:center;gap:18px;justify-content:flex-end;padding:0 14px;font-size:13px;height:35px}.menu-bar-app{display:grid;place-items:center;background:rgba(234,232,222,.09);height:32px;width:36px;border-radius:5px}.menu-bar img,.device-row img{filter:invert(94%) sepia(8%) saturate(350%) hue-rotate(12deg)}.app-menu{background:#2b3435;border:1px solid rgba(234,232,222,.15);border-radius:13px;padding:18px;box-shadow:0 18px 38px rgba(0,0,0,.13);font-size:13px}.menu-status{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:22px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--sage)}.menu-status strong{font-weight:500}.menu-product{margin-left:auto;color:#bac2bd;font-size:10px;letter-spacing:.04em}.device-row{display:flex;align-items:center;gap:14px;margin-bottom:20px}.device-row strong{display:block;font-size:13px;font-weight:500}.device-row span{display:block;color:#bac2bd;font-size:11px;margin-top:2px}.menu-divider{height:1px;background:var(--line);margin:12px 0}.menu-row{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:34px}.fake-switch{width:33px;height:20px;border-radius:20px;background:var(--sage);position:relative;flex-shrink:0}.fake-switch:after{content:'';position:absolute;right:3px;top:3px;width:14px;height:14px;border-radius:50%;background:var(--text)}.menu-checkbox{justify-content:flex-start;align-items:flex-start;padding:7px 0;line-height:1.5}.fake-checkbox{display:grid;place-items:center;width:14px;height:14px;border:1px solid var(--muted);border-radius:3px;flex-shrink:0;margin-top:3px;font-size:11px;font-weight:600;line-height:1}.fake-checkbox.checked{background:var(--sage);border-color:var(--sage);color:var(--bg)}.menu-about{justify-content:flex-start;gap:10px;min-height:26px}.demo-controls{display:flex;gap:4px;background:#20292a;border:1px solid var(--line);border-radius:25px;padding:4px;margin-top:24px}.demo-controls button{flex:1;border-radius:20px;background:transparent;color:var(--muted);padding:8px 7px;font-size:11px;white-space:nowrap;transition:background .2s,color .2s}.demo-controls button[aria-pressed=true]{background:var(--sage);color:var(--bg)}.demo-explanation{font-size:12px;line-height:1.65;color:var(--muted);margin:15px 8px 0;min-height:40px}.demo-disclaimer{font-size:10px;color:var(--muted);margin:9px 8px 0}.demo[data-state=standby] .status-dot{background:transparent;border:1px solid var(--sage)}.demo[data-state=paused] .status-dot{background:#a2aaa7}.demo[data-state=paused] .fake-switch{background:#5c6664}.demo[data-state=paused] .fake-switch:after{right:16px}.demo:not([data-state=active]) .device-row{opacity:.66}
.setup-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center}.steps{list-style:none;padding:0;margin:38px 0 0;display:grid;gap:0}.steps li{display:grid;grid-template-columns:44px 1fr;gap:26px;position:relative;padding-bottom:29px}.steps li:last-child{padding-bottom:0}.steps li:not(:last-child):before{content:'';position:absolute;left:21px;top:44px;bottom:0;width:1px;background:#5f7664}.step-number{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--sage);color:var(--bg);font-size:12px;font-weight:600}.steps h3{font-family:var(--serif);font-size:23px;letter-spacing:-.02em;line-height:1.3;margin:4px 0 6px}.steps p{font-size:13px;color:var(--muted);max-width:340px;line-height:1.7}.setup-art{padding-top:60px}.setup-art>img{width:100%}.setup-art>p{text-align:center;font-size:12px;color:var(--muted);margin-top:8px}.conditions{display:grid;grid-template-columns:1fr 1fr;padding-block:48px;border-bottom:1px solid var(--line);gap:42px}.conditions article{display:flex;gap:20px;align-items:flex-start}.conditions article+article{border-left:1px solid var(--line);padding-left:42px}.conditions svg{width:70px;flex-shrink:0;margin-top:2px;color:var(--sage)}.conditions h3{font-family:var(--serif);font-size:24px;letter-spacing:-.03em;line-height:1.3;margin-bottom:8px}.conditions p{font-size:12px;color:var(--muted);line-height:1.7}
.faq{display:grid;grid-template-columns:.8fr 1.5fr;gap:70px}.faq h2{font-size:44px}.faq-intro{font-size:13px;color:var(--muted);margin-top:16px}.faq-items{border-top:1px solid var(--line)}.faq details{border-bottom:1px solid var(--line)}.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:22px;font-size:15px;padding:23px 0;line-height:1.5}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';font-weight:300;font-size:21px;color:var(--sage);flex-shrink:0;width:15px;text-align:center}.faq details[open] summary:after{content:'−'}.faq details p{color:var(--muted);font-size:13px;line-height:1.8;padding:0 32px 24px 0;max-width:630px}.closing{text-align:center;padding:76px 0 55px}.closing-icon{border-radius:18px;margin:0 auto 21px}.closing h2{font-size:clamp(38px,4vw,52px)}.closing p{font-size:14px;color:var(--muted);margin:18px 0 24px}.availability{display:inline-flex;gap:9px;align-items:center;border:1px solid rgba(168,190,165,.35);border-radius:24px;color:var(--sage);font-size:12px;padding:9px 19px}.back-to-top{display:flex;width:fit-content;gap:14px;margin:30px auto 0;font-size:11px;color:var(--muted)}.back-to-top:hover{color:var(--text)}.site-footer{display:flex;justify-content:space-between;align-items:center;gap:25px;padding-block:30px;color:var(--muted);font-size:10px}.site-footer p,.site-footer>div{display:flex;align-items:center;gap:16px}.footer-brand{color:var(--text);font-family:var(--serif);font-size:18px}.site-footer>div{gap:22px}.site-footer a{color:var(--text)}.site-footer a:hover{text-decoration:underline;text-underline-offset:5px}.other-projects{color:var(--muted)}
.faq-more{display:inline-flex;gap:10px;margin-top:22px;font-size:13px;color:var(--sage)}.faq-more:hover{text-decoration:underline;text-underline-offset:5px}.footer-links{display:flex;gap:18px}
.page{max-width:760px;padding-block:88px 72px}.page h1{font-size:clamp(40px,5vw,58px);margin-bottom:22px}.page .lede{font-family:var(--serif);font-size:20px;line-height:1.6;letter-spacing:-.01em}.page .effective{font-size:12px;color:var(--muted);margin-bottom:28px}.page h2{font-size:28px;letter-spacing:-.03em;margin:52px 0 14px}.page p,.page li{color:var(--muted);font-size:15px;line-height:1.8}.page p+p{margin-top:14px}.page ul{padding-left:20px;margin:12px 0 0}.page a{color:var(--sage);text-decoration:underline;text-underline-offset:4px}.page details{border-bottom:1px solid var(--line)}.page .qa{border-top:1px solid var(--line);margin-top:8px}.page summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:22px;font-size:16px;padding:20px 0;line-height:1.5;color:var(--text)}.page summary::-webkit-details-marker{display:none}.page summary:after{content:'+';font-weight:300;font-size:21px;color:var(--sage);flex-shrink:0;width:15px;text-align:center}.page details[open] summary:after{content:'−'}.page details>:not(summary){padding-right:32px}.page details>:last-child{padding-bottom:22px}.page code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--text);overflow-wrap:anywhere}.page [lang=zh-CN] .lede{font-family:var(--sans);font-size:17px;line-height:1.9}.page [lang=zh-CN] h2{line-height:1.35}.lang-block[hidden]{display:none}.lang-block:not([hidden])+.lang-block:not([hidden]){margin-top:96px;padding-top:72px;border-top:1px solid var(--line)}.subpage-nav{display:flex;gap:28px;margin-left:auto}.subpage-nav a{font-size:13px;color:var(--muted)}.subpage-nav a:hover,.subpage-nav a[aria-current=page]{color:var(--text)}
html[lang=zh-CN] h1{font-size:clamp(42px,5.5vw,72px);line-height:1.3;letter-spacing:-.04em}html[lang=zh-CN] h1 em{font-style:normal}html[lang=zh-CN] .story-copy{font-family:var(--sans);font-size:17px;line-height:1.95}html[lang=zh-CN] h2{line-height:1.3}html[lang=zh-CN] .hero-description{font-size:16px}html[lang=zh-CN] .steps h3{font-size:22px}html[lang=zh-CN] .eyebrow{letter-spacing:.15em}
@media(min-width:1500px){.hero{padding-top:95px}.hero-illustrations figure>img{height:340px}}
@media(max-width:1000px){.container{width:calc(100% - 64px)}.desktop-nav{gap:20px}.header-actions{margin-left:4px}.how{gap:55px}.story-grid{gap:36px}.story-copy{font-size:19px}.hero-illustrations{gap:28px}.hero-illustrations figure>img{height:275px}.conditions{gap:24px}.conditions article+article{padding-left:24px}.conditions svg{width:50px}.conditions h3{font-size:22px}.faq{gap:40px}.other-projects{display:none}}
@media(max-width:740px){.page{padding-block:56px 48px}.page .lede{font-size:18px}.page h2{font-size:24px;margin-top:40px}.page p,.page li{font-size:14px}.page summary{font-size:15px}.page details>:not(summary){padding-right:12px}.subpage-nav{gap:16px}.footer-links{flex-wrap:wrap;justify-content:center}html{scroll-padding-top:88px}.container{width:calc(100% - 44px)}.header-inner{height:72px;gap:12px}.brand{font-size:23px}.brand img{width:34px;height:34px}.desktop-nav{display:none}.header-actions{gap:15px;margin-left:auto}.menu-toggle{display:block}.hero{padding-top:54px;padding-bottom:28px}.hero-eyebrow{font-size:9px;letter-spacing:.12em;margin-bottom:24px}.hero h1{font-size:clamp(37px,6.5vw,54px);letter-spacing:-.047em;line-height:1.12}.hero-description{font-size:14px;max-width:290px;margin-block:22px 25px}.button{font-size:12px;padding:11px 22px}.platform{font-size:10px}.hero-illustrations{margin:24px 0 0;gap:8px;grid-template-columns:1.5fr 1fr}.hero-illustrations figure>img{height:auto;aspect-ratio:1.45;object-fit:contain}.hero-illustrations figcaption{font-size:10px;margin-top:12px;line-height:1.5}.hero-illustrations figcaption span{font-size:9px}.hero-footnote{font-size:9px;letter-spacing:0;gap:12px;margin-top:32px}.story{padding-block:59px}.story-grid{grid-template-columns:1fr;gap:18px}.eyebrow{font-size:10px;margin-bottom:18px}.story h2{font-size:36px;margin-bottom:24px}.story-copy{font-size:19px;line-height:1.65;max-width:560px}.story-copy p+p{margin-top:18px}.story-art{width:min(370px,100%);justify-self:center;padding:0}.story-art>img{max-height:235px}.pair-captions{font-size:12px}.pair-captions small{font-size:10px}.section-space{padding-block:64px}.how{grid-template-columns:1fr;gap:44px}.how h2,.setup h2{font-size:43px}.how-copy>p:not(.eyebrow){font-size:15px;margin-top:20px;max-width:none}.quiet-note{max-width:none;font-size:12px}.demo{justify-self:center;max-width:390px}.app-menu{font-size:13px;padding:18px}.demo-controls button{font-size:11px}.demo-explanation{min-height:0}.setup-grid{grid-template-columns:1fr;gap:8px}.steps{margin-top:31px}.steps li{gap:19px;padding-bottom:26px}.steps h3{font-size:22px}.steps p{max-width:none;font-size:13px}.setup-art{padding-top:12px;max-width:370px;justify-self:center}.setup-art>img{max-height:285px}.setup-art>p{font-size:11px}.conditions{grid-template-columns:1fr;gap:25px;padding-block:34px}.conditions article{gap:18px}.conditions article+article{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:25px}.conditions svg{width:58px}.conditions h3{font-size:23px}.conditions p{font-size:12px}.faq{grid-template-columns:1fr;gap:30px}.faq h2{font-size:40px}.faq-intro{margin-top:12px}.faq summary{font-size:14px;padding:21px 0}.faq details p{font-size:12px;padding-right:20px}.closing{padding:56px 0 42px}.closing-icon{width:68px;height:68px;border-radius:15px}.closing h2{font-size:37px}.closing p{font-size:13px;max-width:290px;margin:18px auto 24px}.site-footer{flex-direction:column;gap:18px;padding-block:26px;font-size:10px}.site-footer p{gap:10px}.site-footer>div{gap:24px}html[lang=zh-CN] h1{font-size:clamp(32px,6.5vw,48px)}html[lang=zh-CN] .hero-description{font-size:14px}html[lang=zh-CN] .story-copy{font-size:15px}}
@media(max-width:380px){.subpage-nav{display:none}.container{width:calc(100% - 32px)}.header-actions{gap:8px}.hero h1{font-size:34px}.hero-eyebrow{font-size:8px}.hero-illustrations{gap:4px}.hero-illustrations figcaption{font-size:9px}.hero-footnote p{max-width:200px}.conditions h3{font-size:21px}.pair-captions{font-size:10px}.pair-captions small{font-size:9px}.closing h2{font-size:33px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}.button:hover{transform:none}}
@media(prefers-contrast:more){:root{--muted:#d4d9d4;--line:rgba(234,232,222,.4)}.site-header{border-color:var(--line)}}
@media print{.site-header{position:static}.menu-toggle,.demo-controls,.back-to-top{display:none}.section-space{padding-block:40px}.container{width:94%}body{-webkit-print-color-adjust:exact;print-color-adjust:exact}.story,.closing{padding-block:40px}section{break-inside:avoid}}