:root{--ink:#0e0e0f;--paper:#e8e8e5;--mute:#a1a1a1;--line:#2b2b2d;--soft:#161617;--r:999px;color-scheme:dark}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{background:var(--ink);color:var(--paper);font:400 17px/1.65 Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--paper);outline-offset:3px}
.wrap{width:min(1160px,92%);margin-inline:auto}
.section{padding:110px 0}
h1,h2,h3{line-height:1.08;letter-spacing:-.03em;font-weight:700}
h1{font-size:clamp(3rem,8vw,6.4rem);font-weight:800}
h2{font-size:clamp(2rem,4.4vw,3.4rem)}
h3{font-size:1.1rem;letter-spacing:-.01em}
em{font-style:normal;color:#9d9d9a}
.kicker{display:flex;align-items:center;gap:12px;color:var(--mute);font-size:.95rem;margin-bottom:22px}
.kicker i{width:34px;height:2px;background:var(--paper);border-radius:2px}
.lead,.copy,.section-head p{color:var(--mute);max-width:56ch}
.lead{font-size:1.15rem;margin:26px 0 34px}

/* header */
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:14px max(4%,calc((100% - 1160px)/2));background:rgba(14,14,15,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.15rem;letter-spacing:-.02em}
.brand img{width:40px;height:40px;border-radius:10px}
.main-nav{display:flex;align-items:center;gap:30px;font-size:.95rem;color:var(--mute)}
.main-nav a:not(.btn):hover{color:var(--paper)}
.menu-toggle{display:none;background:none;border:1px solid var(--line);color:var(--paper);padding:8px 18px;border-radius:var(--r);font:inherit;cursor:pointer}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:var(--r);font:600 .98rem Inter,sans-serif;border:1.5px solid var(--paper);cursor:pointer;transition:background .2s,color .2s}
.btn-primary{background:var(--paper);color:var(--ink)}
.btn-primary:hover{background:transparent;color:var(--paper)}
.btn-ghost{background:transparent;color:var(--paper)}
.btn-ghost:hover{background:var(--paper);color:var(--ink)}
.nav-download{padding:9px 22px}
.main-nav .btn-primary{color:var(--ink)}
.main-nav .btn-primary:hover{color:var(--paper)}

/* hero – fingerprint ridges */
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;padding:90px 0 110px;position:relative}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{color:var(--mute);font-size:.9rem;margin-top:22px}
.stat{margin-top:44px;padding-top:24px;border-top:1px solid var(--line);display:inline-block;min-width:240px}
.stat small{display:block;color:var(--mute);font-size:.85rem}
.stat b{font-size:2.8rem;letter-spacing:-.04em;line-height:1.1}
.preview{position:relative}
.glow{position:absolute;inset:-14% -10%;z-index:0;pointer-events:none;
 background:repeating-radial-gradient(ellipse 120% 90% at 62% 55%,#fff 0 2px,transparent 2px 15px);
 -webkit-mask:radial-gradient(closest-side,#000 25%,transparent 100%);mask:radial-gradient(closest-side,#000 25%,transparent 100%);opacity:.12}
.window{position:relative;z-index:1;background:var(--ink);border:1.5px solid var(--paper);border-radius:22px;overflow:hidden;box-shadow:12px 12px 0 rgba(255,255,255,.05)}
.window-bar{display:flex;justify-content:space-between;align-items:center;padding:13px 18px;border-bottom:1px solid var(--line);font-size:.8rem;color:var(--mute)}
.dots{display:flex;gap:6px}.dots span{width:10px;height:10px;border-radius:50%;border:1.5px solid var(--mute)}
.window-body{display:grid;grid-template-columns:68px 1fr;min-height:320px}
.side{border-right:1px solid var(--line);padding:18px 0;display:flex;flex-direction:column;align-items:center;gap:18px}
.side img{width:34px;border-radius:8px}
.rail{width:26px;height:4px;border-radius:4px;background:var(--line)}.rail.on{background:var(--paper)}
.pane{padding:26px}
.pane .kicker{margin-bottom:10px;font-size:.85rem}
.pane h3{font-size:1.5rem;margin-bottom:4px}
.pane>p{color:var(--mute);font-size:.92rem;margin-bottom:18px}
.row{display:flex;align-items:center;gap:14px;padding:13px 0;border-top:1px solid var(--line)}
.row div{flex:1;line-height:1.3}.row small{display:block;color:var(--mute);font-size:.8rem}
.badge{width:40px;height:40px;border-radius:12px;border:1.5px solid var(--paper);display:grid;place-items:center;font-weight:700;font-size:.85rem}
.pill{border:1px solid var(--paper);border-radius:var(--r);padding:3px 13px;font-size:.78rem}

/* why */
.section-head{margin-bottom:56px}.section-head h2{max-width:18ch;margin-bottom:18px}
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--line);border-radius:26px;overflow:hidden}
.why-card{padding:42px;border:0 solid var(--line);border-right-width:1px;border-bottom-width:1px;position:relative;transition:background .25s}
.why-card:nth-child(2n){border-right-width:0}.why-card:nth-child(n+3){border-bottom-width:0}
.why-card:hover{background:var(--soft)}
.why-card .icon{width:52px;height:52px;border-radius:50%;border:1.5px solid var(--paper);display:grid;place-items:center;font-size:1.3rem;margin-bottom:26px}
.why-card h3{margin-bottom:10px;font-size:1.25rem}.why-card p{color:var(--mute)}
.why-number{display:none}

/* security */
.security{background:var(--soft);border-block:1px solid var(--line)}
.security .copy{color:var(--mute)}
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}
.link{display:inline-block;margin-top:26px;font-weight:600;border-bottom:2px solid currentColor;padding-bottom:2px}
.item{display:flex;gap:18px;padding:24px 0;border-bottom:1px solid var(--line)}
.item:first-child{padding-top:0}
.check{flex:none;width:34px;height:34px;border-radius:50%;border:1.5px solid var(--paper);display:grid;place-items:center;font-size:.9rem}
.item h3{margin-bottom:4px}.item p{color:var(--mute);font-size:.95rem}
.note{margin-top:22px;font-size:.9rem;color:var(--mute)}

/* docs */
.docs-panel{display:grid;grid-template-columns:1fr 1fr;gap:56px;border:1px solid var(--line);border-radius:26px;padding:50px}
.docs-panel h2{margin-bottom:14px}
.docs-panel .copy{margin-bottom:26px}
.docs-panel .copy strong{color:var(--paper)}
.search{display:flex;gap:10px;margin-bottom:16px}
.search input{flex:1;min-width:0;background:transparent;border:1.5px solid var(--line);border-radius:var(--r);padding:13px 20px;color:var(--paper);font:inherit;font-size:.95rem}
.search input:focus{border-color:var(--paper);outline:0}
.topics{display:flex;flex-direction:column}
.topic{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 4px;border-bottom:1px solid var(--line);transition:padding .2s}
.topic:first-child{padding-top:0}.topic:hover{padding-left:14px}
.topic small{display:block;color:var(--mute);font-size:.88rem}

/* about */
.about{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.about-card{border:1px solid var(--line);border-radius:26px;padding:44px}
.about-card h2{font-size:2rem;margin-bottom:14px}
.person{display:flex;align-items:center;gap:14px;margin:26px 0 8px}
.person small{display:block;color:var(--mute);font-size:.85rem;line-height:1.3}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--paper);color:var(--ink);display:grid;place-items:center;font-weight:800}
.credit{margin-top:18px;padding-left:18px;border-left:2px solid var(--paper);color:var(--mute)}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:46px 0 30px}
.foot-row,.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.foot-links{display:flex;gap:28px;color:var(--mute);font-size:.95rem}.foot-links a:hover{color:var(--paper)}
.foot-bottom{margin-top:34px;color:var(--mute);font-size:.85rem}

@media(max-width:900px){
 .hero,.security-grid,.docs-panel,.about{grid-template-columns:1fr}
 .hero{padding-top:60px}.section{padding:80px 0}.docs-panel{padding:30px}
 .menu-toggle{display:block}
 .main-nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:flex-start;gap:18px;padding:24px 4%;background:var(--ink);border-bottom:1px solid var(--line)}
 .menu-toggle[aria-expanded="true"]+.main-nav,.main-nav.open,.main-nav.is-open,.main-nav.active,.main-nav.show{display:flex}
}
@media(max-width:620px){.why-grid{grid-template-columns:1fr}.why-card{border-right-width:0!important;border-bottom-width:1px!important}.why-card:last-child{border-bottom-width:0!important}.why-card,.about-card{padding:30px}.search{flex-direction:column}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* feature cards + feature pages */
.fx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fx-card{display:block;border:1px solid var(--line);border-radius:22px;padding:30px;transition:background .25s,border-color .25s}
.fx-card:hover{background:var(--soft);border-color:var(--mute)}
.fx-card .icon{width:52px;height:52px;border-radius:50%;border:1.5px solid var(--paper);display:grid;place-items:center;font-size:1.3rem}
.fx-card h3{font-size:1.25rem;margin:18px 0 8px}.fx-card p{color:var(--mute);font-size:.95rem}
.fx-card .more{display:inline-block;margin-top:16px;font-weight:600}
.pg h1{font-size:clamp(2.4rem,6vw,4.4rem)}.pg-hero{padding:80px 0 20px}.pg-hero .lead{max-width:60ch}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.steps{list-style:none;counter-reset:s;margin-top:22px}
.steps li{counter-increment:s;display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);color:var(--mute)}
.steps li::before{content:counter(s);flex:none;width:30px;height:30px;border:1.5px solid var(--paper);border-radius:50%;display:grid;place-items:center;font-size:.85rem;color:var(--paper)}
.steps b{color:var(--paper)}.limit{margin-top:22px;color:var(--mute);font-size:.92rem}
.code{font:700 1.9rem/1 'Courier New',monospace;letter-spacing:.12em}
.bar-t{height:5px;border-radius:5px;background:var(--line);overflow:hidden;margin-top:8px}.bar-t i{display:block;height:100%;width:62%;background:var(--paper)}
.safe-panel{border:1px solid var(--line);border-radius:26px;padding:44px}.safe-panel p{color:var(--mute);max-width:62ch;margin-top:12px}
@media(max-width:900px){.fx-grid,.split{grid-template-columns:1fr}.pg-hero{padding-top:56px}.safe-panel{padding:28px}}