:root{--page:#f6f7fb;--surface:#fff;--ink:#172033;--muted:#657184;--line:#dce2ea;--blue:#2f69e8;--blue2:#2458c7;--navy:#111a2c;--tint:#edf3ff;--green:#147c50;--amber:#a06b00;--shadow:0 18px 50px rgba(24,33,51,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--page);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img,svg{display:block;max-width:100%}.shell{width:min(1160px,calc(100% - 40px));margin:0 auto}.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{position:sticky;top:0;z-index:30;background:rgba(246,247,251,.9);backdrop-filter:blur(16px);border-bottom:1px solid rgba(220,226,234,.76)}.nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.03em;white-space:nowrap}.mark{width:35px;height:35px;border-radius:11px;background:#08192f url("app-icon-512.png") center/cover no-repeat;box-shadow:none;display:inline-block;flex:0 0 35px}.mark:before{content:none}.mark:after{content:none}.nav-links{display:flex;align-items:center;gap:22px;color:var(--muted);font-size:14px;font-weight:650}.nav-links a:hover{color:var(--ink)}.nav-cta{color:#fff!important;background:var(--blue);padding:10px 14px;border-radius:12px}.nav-cta:hover{background:var(--blue2)}
.hero{padding:66px 0 76px}.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:clamp(44px,7vw,92px);align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#3d587f;font-size:14px;font-weight:760}.dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}h1,h2,h3,p{margin-top:0}h1{max-width:710px;margin:13px 0 20px;font-size:clamp(43px,5.5vw,74px);line-height:1.0;letter-spacing:-.065em}.lede{max-width:670px;color:var(--muted);font-size:clamp(18px,2vw,21px);line-height:1.58}.keyword-line{margin-top:16px;color:#536178;font-size:13px}.store-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}.store-button{min-height:58px;display:inline-flex;align-items:center;gap:11px;padding:8px 17px;border-radius:15px;background:var(--navy);color:#fff;border:1px solid #202c43;box-shadow:0 9px 22px rgba(17,26,44,.16);transition:.15s}.store-button:hover{transform:translateY(-1px);background:#1a263b}.store-icon{width:27px;height:27px}.store-copy{display:grid;line-height:1.05}.store-copy small{font-size:10px;opacity:.75;margin-bottom:3px}.store-copy strong{font-size:16px}.hero-note{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:18px;color:var(--muted);font-size:13px}.hero-note span{display:inline-flex;align-items:center;gap:6px}.hero-visual{display:flex;justify-content:center}.promo{width:min(100%,480px);height:auto;border-radius:26px;box-shadow:0 26px 70px rgba(20,29,46,.16)}
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.6)}.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}.trust-item{padding:22px;text-align:center}.trust-item+.trust-item{border-left:1px solid var(--line)}.trust-item strong{display:block;font-size:15px}.trust-item span{display:block;color:var(--muted);font-size:12px;margin-top:3px}
section.content{padding:86px 0}.section-head{max-width:760px}.kicker{color:var(--blue);font-size:12px;text-transform:uppercase;letter-spacing:.13em;font-weight:850}.section-head h2{font-size:clamp(32px,4vw,50px);line-height:1.06;letter-spacing:-.05em;margin:8px 0 14px}.section-head p{font-size:18px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px}.card{background:var(--surface);border:1px solid #e5e9f0;border-radius:22px;padding:25px;box-shadow:0 10px 28px rgba(24,33,51,.04)}.card h3{margin-bottom:7px;font-size:21px;letter-spacing:-.03em}.card p{margin:0;color:var(--muted)}.icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--tint);color:var(--blue);font-weight:850;margin-bottom:17px}
.split{display:grid;grid-template-columns:.94fr 1.06fr;gap:60px;align-items:start}.prose{max-width:820px}.prose h2{font-size:clamp(30px,3.6vw,44px);line-height:1.08;letter-spacing:-.045em;margin:0 0 15px}.prose h3{font-size:24px;letter-spacing:-.03em;margin:34px 0 10px}.prose p,.prose li{color:#4f5d72}.prose ul,.prose ol{padding-left:22px}.prose li+li{margin-top:8px}.checklist{display:grid;gap:0;border-top:1px solid var(--line)}.check{padding:18px 0;border-bottom:1px solid var(--line)}.check strong{display:block;margin-bottom:3px}.check span{color:var(--muted)}
.usecases{background:#fff}.use-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:36px}.use{padding:22px 0;border-top:1px solid var(--line)}.use h3{margin:0 0 5px;font-size:20px}.use p{margin:0;color:var(--muted)}
.callout{padding:23px 25px;border-radius:20px;background:#fff7df;border:1px solid #f0dda4;color:#5f4a10}.callout strong{display:block;margin-bottom:5px;color:#3d310e}.callout p{margin:0;color:#6c591e}.privacy{background:var(--navy);color:#fff}.privacy .section-head p{color:#c0cad9}.privacy-grid{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:start}.privacy-list{display:grid;gap:0}.privacy-item{padding:17px 0;border-bottom:1px solid rgba(255,255,255,.12)}.privacy-item strong{display:block}.privacy-item span{color:#c0cad9;font-size:14px}
.faq{margin-top:34px;border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{cursor:pointer;list-style:none;padding:20px 38px 20px 0;font-weight:760;font-size:18px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:2px;top:15px;font-size:27px;color:var(--blue)}details[open] summary:after{content:"–"}details p{margin:0;padding:0 44px 20px 0;color:var(--muted);max-width:850px}
.cta{padding:70px 0;background:linear-gradient(135deg,#eaf1ff,#fbfdff 55%,#eef3ff)}.cta-box{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}.cta h2{font-size:clamp(31px,4vw,49px);line-height:1.06;letter-spacing:-.05em;margin-bottom:10px}.cta p{color:var(--muted);font-size:18px;margin:0}.cta .store-actions{margin-top:0;justify-content:flex-end}
.related{padding:54px 0}.related h2{font-size:25px;letter-spacing:-.035em}.related-links{display:flex;flex-wrap:wrap;gap:9px}.related-links a{padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#46556b;font-size:13px;font-weight:650}.related-links a:hover{border-color:#b8c7df;color:var(--blue)}
.breadcrumb{padding:22px 0 0;font-size:13px;color:var(--muted)}.breadcrumb a{color:var(--blue)}.article-hero{padding:45px 0 36px}.article-hero h1{max-width:880px;font-size:clamp(40px,5vw,66px)}.article-wrap{display:grid;grid-template-columns:minmax(0,780px) 280px;gap:60px;align-items:start;padding-bottom:80px}.article{background:#fff;border:1px solid #e5e9f0;border-radius:24px;padding:clamp(24px,4vw,44px);box-shadow:0 10px 28px rgba(24,33,51,.04)}.article h2{font-size:31px;line-height:1.12;letter-spacing:-.04em;margin:38px 0 12px}.article h2:first-child{margin-top:0}.article h3{font-size:22px;margin:28px 0 9px}.article p,.article li{color:#4f5d72}.article li+li{margin-top:7px}.article ul,.article ol{padding-left:22px}.article .callout{margin:24px 0}.toc{position:sticky;top:100px}.toc-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.toc-card strong{display:block;margin-bottom:9px}.toc-card a{display:block;padding:7px 0;color:var(--muted);font-size:13px}.toc-card a:hover{color:var(--blue)}
footer{padding:36px 0;background:#edf1f7;color:#6e7b8e;font-size:13px}.footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:32px}.footer-brand p{max-width:390px;margin-top:10px}.footer-col strong{display:block;color:var(--ink);margin-bottom:8px}.footer-col a{display:block;padding:4px 0}.footer-col a:hover{color:var(--blue)}.footer-bottom{margin-top:28px;padding-top:22px;border-top:1px solid #d7dee8;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
@media(max-width:900px){.nav-links a:not(.nav-cta){display:none}.hero{padding:42px 0 58px}.hero-grid,.split,.privacy-grid,.cta-box,.article-wrap{grid-template-columns:1fr}.hero-copy{order:1}.hero-visual{order:2}.promo{max-width:430px}.trust-grid{grid-template-columns:1fr 1fr}.trust-item:nth-child(3){border-left:0}.trust-item:nth-child(n+3){border-top:1px solid var(--line)}.cards{grid-template-columns:1fr 1fr}.cta .store-actions{justify-content:flex-start}.toc{display:none}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:560px){.shell{width:min(100% - 30px,1160px)}h1{font-size:44px}.cards,.use-grid{grid-template-columns:1fr}.trust-grid{grid-template-columns:1fr 1fr}.store-button{width:100%;justify-content:flex-start}.promo{border-radius:20px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.article{padding:24px 20px}.article-hero{padding-top:30px}}