:root{color-scheme:light;--paper:#f5f3ee;--ink:#222a3b;--muted:#606778;--accent:#91633d;--line:#dddcd7;--night:#192139;--shell:min(1100px,calc(100% - 40px));font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;line-height:1.75}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{display:block;max-width:100%}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #91633d;outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.3;letter-spacing:-.035em}p{color:var(--muted)}.section-shell{width:var(--shell);margin-inline:auto}.sky,.orbit,.phone-speaker,.feature-chip,.gallery-halo{display:none}
.site-header{position:sticky;top:0;z-index:20;height:72px;padding:12px max(20px,calc((100vw - 1100px)/2));display:flex;align-items:center;gap:24px;background:#f5f3eef2;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px;font-weight:750;white-space:nowrap}.brand img{width:36px;height:36px;border-radius:11px}.site-header nav{margin-left:auto;display:flex;gap:24px;font-size:14px}.site-header nav a{padding:8px 0}.header-cta{background:var(--night);color:#fff;padding:9px 18px;border-radius:12px;font-size:13px;white-space:nowrap}
.hero{padding-block:64px 60px;display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:60px}.hero-copy{max-width:580px}.eyebrow{font:600 11px/1.5 ui-monospace,monospace;letter-spacing:.13em;color:var(--accent);margin-bottom:16px}.status-dot{display:inline-block;width:6px;height:6px;background:#79967e;border-radius:50%;margin-right:8px}h1{font-size:clamp(38px,5vw,64px);font-weight:750;margin-bottom:24px}h1 span,h2 span{display:block;color:var(--accent)}.hero-lead{font-size:17px;max-width:430px;margin-bottom:26px}.hero-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}.download-button{min-height:58px;border:0;border-radius:16px;background:var(--night);color:#fff;display:inline-flex;gap:13px;align-items:center;justify-content:center;padding:10px 24px;text-align:left;font-weight:650}.download-button small{display:block;font-size:11px;color:#c1c9de;font-weight:400}.apple-mark{font-size:28px}.build-meta{font-size:11px;display:flex;gap:10px;align-items:center;color:var(--muted)}.release-note{font-size:12px;margin:14px 0 0}.hero-visual{position:relative;display:grid;place-items:center;isolation:isolate;padding:25px 25px 0;border-radius:34px;background:#e6e6df;overflow:hidden;max-height:610px}.hero-visual::before{content:'';position:absolute;inset:12% -20% -40%;background:#d2d7d0;border-radius:50%;z-index:-1}.phone{border:5px solid #101827;border-radius:32px;overflow:hidden;background:var(--night);box-shadow:0 20px 35px #19213922}.phone img{width:100%;height:auto}.hero-phone{width:258px;transform:rotate(-4deg);margin-bottom:-55px}.mobile-quicklinks{display:flex;gap:18px;font-size:13px;margin-top:20px}.mobile-quicklinks a{min-height:44px;display:flex;align-items:center;gap:5px}.trust-strip{width:var(--shell);margin:0 auto 80px;display:grid;grid-template-columns:repeat(3,1fr);padding:20px 0;border-block:1px solid var(--line);gap:20px}.trust-strip div{display:grid;gap:4px}.trust-strip strong{font-size:14px}.trust-strip span{font-size:12px;color:var(--muted)}
.section-heading{margin-bottom:30px}.section-heading h2,.screens h2,.safety h2{font-size:38px;margin-bottom:16px;font-weight:700}.features{padding-bottom:80px}.feature-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px}.feature-primary{padding:30px;border-radius:24px;background:#e8ece7;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.feature-primary h3{font-size:28px;margin-top:18px}.feature-primary p,.feature-card p{font-size:14px;margin:0}.feature-index{font:12px ui-monospace,monospace;color:var(--accent)}.feature-stack{display:grid}.feature-card{padding:22px 0 22px 42px;position:relative;border-bottom:1px solid var(--line)}.feature-card:first-child{padding-top:0}.feature-card:last-child{border:0}.feature-card .feature-index{position:absolute;left:0;top:26px}.feature-card:first-child .feature-index{top:4px}.feature-card h3{font-size:19px;margin-bottom:8px}.nfc-visual{height:125px;display:grid;place-items:center;position:relative}.nfc-visual span{position:absolute;width:100px;height:100px;border:1px solid #6e877a40;border-radius:50%}.nfc-visual span:nth-child(2){width:75px;height:75px}.nfc-visual span:nth-child(3){width:50px;height:50px}.nfc-visual i{width:16px;height:25px;background:#6e877a;border-radius:5px}
.screens{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding-bottom:80px}.screens-copy>p{font-size:15px}.screen-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:5px;background:#e9e6df;border-radius:14px;margin:25px 0 18px}.screen-tab{border:0;background:transparent;color:var(--muted);min-height:44px;border-radius:10px;padding:8px;font-size:14px}.screen-tab.is-active{background:var(--night);color:white;box-shadow:0 3px 8px #19213922}.screen-caption{display:grid;gap:3px;font-size:13px;min-height:55px}.screen-caption strong{font-size:16px}.screen-caption span{color:var(--muted)}.gallery-stage{display:grid;place-items:center;padding:28px;background:#e6e6df;border-radius:28px}.gallery-phone{width:255px}.capture-note{font-size:11px;color:var(--muted);margin:12px 0 0;text-align:center}
.guide{padding-bottom:80px}.guide-intro{max-width:630px}.guide-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.guide-card{background:#fcfbf8;padding:25px;border:1px solid var(--line);border-radius:20px}.guide-card summary{display:flex;align-items:center;gap:14px;cursor:pointer;list-style:none;min-height:44px;font-size:17px;font-weight:650}.guide-card summary::-webkit-details-marker{display:none}.step-number{font:13px ui-monospace,monospace;color:var(--accent);background:#efe6d9;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}.guide-card summary::after{content:'＋';margin-left:auto;font-size:18px;font-weight:400}.guide-card[open] summary::after{content:'−'}.guide-content{padding-top:14px;font-size:14px}.guide-content ol{padding-left:20px;margin:0}.guide-content li{margin:0 0 10px;color:var(--muted)}.guide-content b{color:var(--ink)}.guide-content p{margin-bottom:0}.guide-tip{padding:12px;background:#f1eee7;border-radius:10px;font-size:13px}
.faq{padding-bottom:80px}.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{font-size:16px;font-weight:600;cursor:pointer;list-style:none;padding:20px 32px 20px 0;position:relative;line-height:1.6}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:'＋';position:absolute;right:0;top:20px;font-weight:400;color:var(--accent)}.faq-list details[open] summary::after{content:'−'}.faq-list details p{font-size:14px;margin:0 24px 20px 0}.support-link{font-size:14px;color:var(--accent);min-height:44px;display:inline-flex;align-items:center}
.safety{padding-bottom:70px}.safety-panel{padding:34px;background:var(--night);border-radius:24px;display:grid;grid-template-columns:1fr 1.3fr;gap:35px;color:#f6f3ed}.safety-panel h2{font-size:30px}.safety-panel .eyebrow,.safety-panel a{color:#e7c9a4}.safety-copy p{color:#c6cbdb;font-size:14px}.safety-copy a{font-size:14px}.final-cta{display:flex;align-items:center;gap:22px;border-block:1px solid var(--line);padding-block:24px;margin-bottom:35px}.final-cta img{width:60px;height:60px;border-radius:16px}.final-cta .eyebrow{margin-bottom:5px}.final-cta h2{font-size:24px;margin:0}.ghost-button{margin-left:auto;white-space:nowrap;color:var(--accent);font-size:14px;min-height:44px;display:flex;align-items:center}footer{width:var(--shell);margin:auto;padding:15px 0 35px;color:var(--muted);font-size:12px}footer>div:first-child{display:flex;gap:18px;flex-wrap:wrap}.footer-links{display:flex;gap:20px;flex-wrap:wrap;margin-block:10px}.footer-links a{padding-block:8px}footer p{margin:0;font-size:11px}.filing-row{display:flex;gap:12px 30px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:16px;margin-top:18px}.filing-row a{display:flex;gap:12px;min-height:30px;align-items:center}.filing-row strong{font-weight:500}.mobile-dock{display:none}
dialog{width:min(420px,calc(100% - 40px));padding:28px;border:1px solid var(--line);border-radius:24px;background:var(--paper);color:var(--ink);box-shadow:0 25px 90px #10182744}dialog::backdrop{background:#10182780;backdrop-filter:blur(4px)}dialog h2{font-size:24px;margin:16px 0 12px}dialog p{font-size:15px}.dialog-close{position:absolute;right:12px;top:8px;width:44px;height:44px;background:transparent;border:0;font-size:24px}.dialog-primary{background:var(--night);color:white;border:0;border-radius:12px;min-height:48px;width:100%}.dialog-icon{font-size:30px;color:var(--accent)}.legal-shell{width:min(760px,calc(100% - 40px));margin:auto;padding:50px 0}.legal-shell h1{font-size:36px;margin-top:25px}.legal-shell h2{font-size:21px}.legal-shell section{border-bottom:1px solid var(--line);padding:20px 0}.back-link{color:var(--accent)}.legal-date{font-size:13px}
@media(max-width:760px){.site-header{height:64px;padding-inline:20px;gap:12px}.site-header nav{display:none}.header-cta{margin-left:auto}.hero{display:flex;flex-direction:column;gap:26px;padding-block:30px 28px}.hero-copy{text-align:center;max-width:440px}.eyebrow{font-size:10px;margin-bottom:12px}h1{font-size:36px;line-height:1.28;margin-bottom:16px}.hero-lead{font-size:15px;margin-bottom:20px}.hero-actions{justify-content:center;gap:12px}.download-button{width:100%;min-height:56px;justify-content:center}.build-meta{justify-content:center;width:100%;font-size:11px}.release-note{font-size:11px;margin-top:8px}.mobile-quicklinks{justify-content:center;margin-top:8px;gap:28px}.hero-visual{width:100%;height:340px;max-height:340px;border-radius:24px;padding-top:24px}.hero-phone{width:210px;margin-bottom:-145px;transform:rotate(-3deg)}.trust-strip{margin-bottom:52px;gap:12px;padding-block:17px}.trust-strip strong{font-size:13px}.trust-strip span{font-size:11px;line-height:1.5}.section-heading h2,.screens h2{font-size:30px}.section-heading{margin-bottom:22px}.features,.screens,.guide,.faq{padding-bottom:56px}.feature-layout{grid-template-columns:1fr;gap:20px}.feature-primary{padding:24px;min-height:240px}.feature-primary h3{font-size:24px;margin-bottom:12px}.nfc-visual{height:85px;position:absolute;right:20px;top:0;width:100px;opacity:.65}.feature-primary>div:not(.nfc-visual){margin-top:20px}.feature-primary p{max-width:100%}.feature-card{padding-block:19px}.feature-card h3{font-size:18px}.screens{display:flex;flex-direction:column;gap:20px}.screens-copy{width:100%}.screen-tabs{margin-top:20px}.gallery-stage{width:100%;padding:24px 0}.gallery-phone{width:min(260px,80%)}.guide-list{grid-template-columns:1fr;gap:10px}.guide-card{padding:16px 18px}.guide-card summary{font-size:16px}.guide-content{font-size:14px}.faq-layout{grid-template-columns:1fr;gap:8px}.faq-list summary{font-size:15px}.safety{padding-bottom:45px}.safety-panel{display:block;padding:25px}.safety-panel h2{font-size:25px;margin-bottom:20px}.safety-copy p{font-size:13px}.final-cta{flex-wrap:wrap;gap:16px}.final-cta h2{font-size:21px}.final-cta img{width:50px;height:50px;border-radius:13px}.final-cta .ghost-button{margin-left:66px}.filing-row{display:grid;gap:10px}footer{padding-bottom:110px}.mobile-dock{display:flex;position:fixed;z-index:25;bottom:0;left:0;right:0;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px calc(12px + env(safe-area-inset-bottom));background:#f5f3eef5;border-top:1px solid var(--line);backdrop-filter:blur(12px)}.mobile-dock>div{display:grid;gap:0}.mobile-dock strong{font-size:14px}.mobile-dock span{font-size:11px;color:var(--muted)}.mobile-dock a{background:var(--night);color:#fff;border-radius:12px;min-height:44px;padding:10px 22px;font-size:13px}.legal-page footer{padding-bottom:35px}}
@media(max-width:350px){:root{--shell:calc(100% - 32px)}h1{font-size:31px}.site-header{padding-inline:16px}.brand{font-size:14px}.hero-visual{height:300px}.trust-strip span{font-size:10px}.screen-tab{font-size:13px}.final-cta h2{font-size:18px}}
.reading-progress{position:fixed;top:0;left:0;right:0;height:2px;background:var(--accent);z-index:40;transform:scaleX(0);transform-origin:left;pointer-events:none}
.download-button,.header-cta,.mobile-dock a,.dialog-primary,.screen-tab{transition:transform .22s cubic-bezier(.2,.8,.2,1),background-color .2s,box-shadow .22s}
.download-button:active,.header-cta:active,.mobile-dock a:active,.dialog-primary:active,.screen-tab:active{transform:scale(.97)}
.guide-card{transition:border-color .25s,background-color .25s}.guide-card[open]{border-color:#bda991;background:#fffdf9}
.guide-card summary::after,.faq-list summary::after{content:'＋';transition:transform .24s cubic-bezier(.16,1,.3,1)}
.guide-card[open] summary::after,.faq-list details[open] summary::after{content:'＋';transform:rotate(45deg)}
.site-header nav a,.mobile-quicklinks a{position:relative}.site-header nav a::after,.mobile-quicklinks a::after{content:'';position:absolute;left:0;right:0;bottom:4px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
dialog[open]{animation:dialog-enter .28s cubic-bezier(.16,1,.3,1)}dialog[open]::backdrop{animation:backdrop-enter .2s ease-out}
@keyframes dialog-enter{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
@keyframes backdrop-enter{from{opacity:0}to{opacity:1}}
@media(hover:hover) and (pointer:fine){.download-button:hover,.header-cta:hover,.mobile-dock a:hover,.dialog-primary:hover{transform:translateY(-2px);box-shadow:0 7px 18px #19213926}.site-header nav a:hover::after,.mobile-quicklinks a:hover::after{transform:scaleX(1)}.screen-tab:not(.is-active):hover{background:#ddd9cf}}
/* Glass-inspired web surfaces: opaque fallback first, blur only on floating UI. */
:root{--glass:#fcfbf7;--glass-edge:#ffffffd9;--glass-shadow:inset 0 1px 0 #fff,0 12px 36px #222a3b0b}
body{background:radial-gradient(ellipse 75% 680px at 95% 8%,#dbe5dd80,transparent),radial-gradient(ellipse 80% 600px at 0 25%,#ede0ce85,transparent),var(--paper)}
.site-header{top:12px;width:min(1132px,calc(100% - 24px));margin:12px auto 0;padding:10px 16px;border:1px solid var(--glass-edge);border-radius:28px;background:var(--glass);box-shadow:var(--glass-shadow)}
.header-cta,.download-button,.dialog-primary,.mobile-dock a{border-radius:999px;background:linear-gradient(155deg,#45506a,#192139 75%);border:1px solid #ffffff30;box-shadow:inset 0 1px 0 #ffffff45,0 5px 14px #19213918;color:#fff}
.hero-visual,.gallery-stage{border-radius:38px;border:1px solid var(--glass-edge);background:linear-gradient(145deg,#ffffffb8,#e0e6de80);box-shadow:var(--glass-shadow)}
.hero-visual::before{background:radial-gradient(ellipse at 45% 30%,#e4d6c380,#cbd9cd66 65%,transparent)}
.feature-primary,.guide-card{border-radius:28px;border:1px solid #ffffffd9;background:linear-gradient(145deg,#fffdf9e6,#edf0e7bf);box-shadow:var(--glass-shadow)}
.guide-card{background:linear-gradient(145deg,#fffdf9ed,#f6f2e9bf)}
.guide-card[open]{background:#fffdf9;border-color:#cbbb9e}
.screen-tabs{border:1px solid var(--glass-edge);background:#ffffff9e;border-radius:999px;box-shadow:inset 0 1px 0 #fff,0 4px 18px #222a3b08}
.screen-tab,.screen-tab.is-active{border-radius:999px}.screen-tab.is-active{background:linear-gradient(145deg,#46516b,#192139);box-shadow:inset 0 1px 0 #ffffff45,0 3px 9px #19213922}
.step-number,.guide-tip{border-radius:16px}.safety-panel{border-radius:32px;background:linear-gradient(135deg,#303c55,#192139);box-shadow:inset 0 1px 0 #ffffff30,0 15px 32px #19213912}
dialog{border-radius:32px;background:var(--glass);border:1px solid var(--glass-edge);box-shadow:inset 0 1px 0 #fff,0 25px 90px #10182744}
@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
 .site-header,.mobile-dock{background:#fbfaf5c9;-webkit-backdrop-filter:blur(20px) saturate(1.4);backdrop-filter:blur(20px) saturate(1.4)}
 dialog{background:#fbfaf5f2;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
}
@media(max-width:760px){
 .site-header{top:8px;margin-top:8px;height:64px;padding:9px 12px;border-radius:24px}
 .hero-visual,.gallery-stage{border-radius:32px}
 .mobile-dock{left:12px;right:12px;bottom:max(10px,env(safe-area-inset-bottom));padding:10px 12px 10px 18px;border:1px solid var(--glass-edge);border-radius:28px;box-shadow:inset 0 1px 0 #fff,0 8px 32px #19213920}
 footer{padding-bottom:calc(115px + env(safe-area-inset-bottom))}
 .guide-card{border-radius:24px}.mobile-dock a{padding-inline:20px}
}
@media(prefers-reduced-transparency:reduce){.site-header,.mobile-dock,dialog{background:#fcfbf7;-webkit-backdrop-filter:none;backdrop-filter:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}