:root{--paper:#faf9f6;--paper-deep:#f0ede6;--surface:#fff;--ink:#302f2d;--body:#43413e;--muted:#68645e;--line:#dedbd3;--accent:#80694f;--serif:"Songti SC",STSong,"Noto Serif SC",serif;--sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color-scheme:light}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--body);font:1rem/1.8 var(--sans);text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-underline-offset:.24em}
button{font:inherit;cursor:pointer}
a,button{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
[hidden],#public-security-record[hidden]{display:none!important}
.site-shell{width:min(100% - 3rem,1200px);margin-inline:auto}
p,h1,h2,h3,h4,figure{margin:0}
p+p{margin-top:1rem}
h1,h2,h3{color:var(--ink);font-weight:600}
h1,h2{font-family:var(--serif)}
h1{font-size:clamp(2.2rem,4.3vw,4.1rem);line-height:1.35;letter-spacing:-.025em}
h2{font-size:clamp(1.8rem,3.2vw,2.8rem);line-height:1.4;letter-spacing:-.02em}
h3{font-size:1.35rem;line-height:1.5}
a,button,p,h1,h2,h3,h4,li{overflow-wrap:break-word}
section[id]{scroll-margin-top:1.5rem}
.skip-link{position:fixed;top:1rem;left:1rem;z-index:30;transform:translateY(-200%);background:var(--ink);color:#fff;padding:.6rem 1rem}
.skip-link:focus{transform:none}
.site-header{border-bottom:1px solid var(--line)}
.nav-shell{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;min-height:84px;gap:1rem}
.site-name{display:inline-flex;align-items:center;gap:.7rem;text-decoration:none;font-family:var(--serif);font-size:1.2rem;color:var(--ink);white-space:nowrap}
.site-name img{width:28px;height:34px;object-fit:contain}
.site-nav{display:flex;align-items:center;gap:2rem;font-size:.9rem}
.site-nav a{text-decoration:none;display:inline-flex;align-items:center;min-height:44px;gap:.8rem}
.site-nav a:hover,.text-link:hover{color:var(--accent)}
.nav-download{border-left:1px solid var(--line);padding-left:1.8rem}
.menu-toggle{display:none;border:1px solid var(--line);background:transparent;min-height:44px;padding:.4rem .8rem;gap:.7rem;color:var(--ink)}
.hero{padding:clamp(3rem,6vw,6rem) 0}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(2rem,6vw,6rem);align-items:center}
.eyebrow{color:var(--accent);font-size:.8rem;letter-spacing:.1em;font-weight:600;margin-bottom:1.2rem}
.hero-lead{color:var(--muted);max-width:37rem;font-size:1.05rem;margin-top:1.7rem;line-height:1.95}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:1.4rem;margin-top:2rem}
.button-link,.install-button{display:inline-flex;justify-content:center;align-items:center;gap:1.5rem;min-height:48px;padding:.75rem 1.4rem;background:var(--ink);color:#fff;text-decoration:none;border:1px solid var(--ink);border-radius:3px;font-weight:500}
.button-link:hover,.install-button:hover{background:#50473b}
.text-link{text-decoration:none;display:inline-flex;min-height:44px;align-items:center;gap:1rem}
.hero-caption{font-size:.8rem;color:var(--muted);margin-top:1.25rem}
.brand-art{padding:2.5rem clamp(1.5rem,4vw,3.8rem);background:#f1eee7;border:1px solid #e8e2d8;border-radius:50% 50% 4px 4px}
.brand-art img{width:100%;aspect-ratio:6042.2/5696.77;object-fit:contain}
.brand-art figcaption{font-size:.7rem;letter-spacing:.2em;color:var(--muted);text-align:center;border-top:1px solid #d9d1c4;padding-top:1.3rem;margin-top:1.8rem}
.section{padding:clamp(3rem,6vw,5.5rem) 0}
.features-section{border-top:1px solid var(--line)}
.section-heading{margin-bottom:2.5rem}
.section-heading>p:last-child{margin-top:1rem;color:var(--muted);max-width:40rem}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2rem}
.feature-card{min-width:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--surface)}
.feature-visual{min-height:235px;padding:2rem;background:#efede6;display:flex;flex-direction:column;justify-content:center;gap:1rem;pointer-events:none}
.visual-kicker{font-size:.75rem;color:var(--accent);letter-spacing:.06em}
.sample-note{display:flex;align-items:center;gap:1rem;padding:1rem;background:var(--paper);border:1px solid #dfd9cd;border-radius:3px;max-width:24rem}
.sample-note div{min-width:0}
.sample-note strong,.ai-note strong,.sharing-note strong{display:block;color:#4b4943;font-size:.92rem;font-weight:500}
.sample-note div>span,.ai-note>span:last-of-type,.sharing-note>span:last-child{display:block;font-size:.75rem;color:var(--muted)}
.note-mark{font-size:1.25rem;color:var(--accent)}
.small-note{margin-left:2rem}
.ai-visual{background:#eee9df}
.ai-note{border-left:2px solid #b79d76;padding-left:1.4rem}
.ai-star{float:right;font-size:2.2rem;color:var(--accent)}
.sample-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.8rem}
.sample-tags span{font-size:.7rem;border:1px solid #d4cbbb;border-radius:20px;padding:.1rem .8rem;color:#655b4c}
.shelf-visual{background:#eaece7}
.book-row{display:flex;align-items:end;border-bottom:4px solid #cbc4b6;padding:0 .4rem;gap:.6rem}
.book-row span{writing-mode:vertical-rl;padding:.8rem .7rem;height:112px;background:#cbc5b3;color:#514e42;border-radius:3px 3px 0 0;font-size:.8rem;letter-spacing:.1em}
.book-row span:nth-child(2){background:#a7ad9d;height:125px}
.book-row span:nth-child(3){background:#dcd5c6;height:103px}
.sharing-visual{background:#eeebe7}
.sharing-note{padding:1.25rem;border:1px solid #d6cfc2;text-align:center;border-radius:4px;align-self:center;width:100%;max-width:24rem;background:#f8f6f1}
.member-circles{display:flex;justify-content:center;margin-bottom:.7rem;padding-left:.4rem}
.member-circles i{font-style:normal;font-size:.7rem;width:36px;height:36px;border:2px solid #f8f6f1;display:grid;place-items:center;border-radius:50%;background:#d3c4aa;margin-left:-.4rem}
.member-circles i:nth-child(2){background:#c2c9b7}
.member-circles i:nth-child(3){background:#e0d6c8}
.feature-copy{padding:1.8rem 2rem 2rem}
.section-number{font-size:.67rem;letter-spacing:.14em;color:var(--accent)}
.feature-copy h3{margin:.45rem 0 .65rem}
.feature-copy p{font-size:.93rem;color:var(--muted)}
.section-note{font-size:.8rem;color:var(--muted);margin-top:1.5rem;max-width:58rem}
.split-heading{display:flex;justify-content:space-between;align-items:end;gap:2rem}
.split-heading>p{font-size:.9rem;color:var(--muted)}
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:0;gap:2rem;margin:2.8rem 0 0}
.steps li{border-top:1px solid #c6baa5;padding-top:1.1rem}
.steps li>span{color:var(--accent);font-family:var(--serif);font-size:1.5rem}
.steps h3{font-size:1.1rem;margin:.6rem 0}
.steps p{font-size:.87rem;color:var(--muted)}
.platform-section{background:var(--paper-deep)}
.platform-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:6rem;align-items:center}
.platform-inner p:not(.eyebrow){max-width:39rem;margin:1rem 0 1.5rem;color:var(--muted);font-size:.93rem}
.platform-list{list-style:none;padding:0;margin:0}
.platform-list li{border-bottom:1px solid #d6d0c5;padding:1.1rem 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem;font-size:1.1rem}
.platform-list small{color:var(--muted);font-size:.8rem;align-self:center}
.privacy-inner{display:grid;grid-template-columns:1fr 1.15fr;gap:5rem}
.privacy-inner>div>p:not(.eyebrow){color:var(--muted);font-size:.95rem}
.inline-links{display:flex;flex-wrap:wrap;gap:1.5rem;margin-top:1.5rem;font-size:.9rem}
.site-footer{border-top:1px solid var(--line);padding:2.5rem 0 1.5rem;font-size:.85rem;color:var(--muted)}
.footer-top,.footer-bottom{display:flex;justify-content:space-between;gap:1.8rem}
.footer-top{padding-bottom:2rem}
.footer-brand{font-family:var(--serif);color:var(--ink);font-size:1.2rem;margin-bottom:.4rem}
.footer-top p+p{margin:0;font-size:.8rem}
.footer-top nav{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem 1.5rem}
.footer-top nav a,.filing-links a{white-space:nowrap;text-decoration:none;display:inline-block;min-height:32px}
.footer-bottom{border-top:1px solid var(--line);padding-top:1.3rem;align-items:start;font-size:.75rem}
.footer-bottom p{max-width:42rem}
.filing-links{display:flex;flex-direction:column}
.public-security-icon{display:inline;width:1em}
.footer-bottom span{line-height:1.9}
.reveal{opacity:1}

@media(max-width:1000px){.hero-grid{gap:2rem}
.hero-lead{font-size:.95rem}
.feature-visual{padding:1.5rem}
.platform-inner{gap:3rem}
.privacy-inner{gap:3rem}
.footer-top{flex-direction:column}
.steps{gap:1.25rem}
}

@media(max-width:767px){.site-shell{width:calc(100% - 2.5rem)}
.nav-shell{min-height:72px;position:relative;padding:1rem 0;gap:.5rem}
.site-nav{width:100%;flex-wrap:wrap;gap:.5rem 1.3rem}
.nav-download{border:0;padding-left:0}
.js-ready .menu-toggle{display:inline-flex}
.js-ready .site-nav{display:none;padding-top:.8rem;border-top:1px solid var(--line);margin-top:.5rem}
.js-ready .site-nav.is-open{display:flex}
.site-nav a{font-size:.85rem}
.hero-grid{grid-template-columns:1fr;gap:2.5rem}
.hero{padding:2.5rem 0}
.hero h1{font-size:clamp(2rem,6.8vw,3rem)}
.hero-lead{margin-top:1.2rem}
.brand-art{max-width:360px;width:100%;margin-inline:auto;padding:2rem 3rem}
.brand-art figcaption{margin-top:1.2rem;padding-top:1rem;font-size:.65rem}
.feature-grid{gap:1.25rem}
.feature-visual{min-height:200px;padding:1.25rem}
.feature-copy{padding:1.3rem}
.sample-note{padding:.7rem}
.sample-note strong{font-size:.8rem}
.small-note{margin-left:1rem}
.steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem}
.split-heading{display:block}
.split-heading>p{margin-top:1rem}
.platform-inner,.privacy-inner{grid-template-columns:1fr;gap:2rem}
.footer-bottom{flex-direction:column;gap:1rem}
}

@media(max-width:540px){.feature-grid{grid-template-columns:1fr}
.feature-visual{min-height:220px;padding:1.5rem}
.hero-actions{gap:1rem}
.button-link{padding:.7rem 1.1rem;gap:1rem}
.hero-caption{font-size:.75rem}
.footer-top nav{gap:.6rem 1.3rem}
.footer-bottom p{font-size:.75rem}
.section-heading{margin-bottom:1.8rem}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
*,*::before,*::after{animation:none!important;transition:none!important}
}
/* Text enlargement must grow the decorative books instead of creating extra columns. */
.book-row span{height:auto;min-height:112px;flex-shrink:0}
.book-row span:nth-child(2){height:auto;min-height:125px}
.book-row span:nth-child(3){height:auto;min-height:103px}
.filing-links{min-width:0;max-width:100%}
.filing-links a{white-space:normal;overflow-wrap:anywhere}