:root{--blue:#176bfa;--ink:#101114;--muted:#687384;--soft:#f5f7fa;--line:#e8ecf2}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
a{text-decoration:none;color:inherit}
.shell{width:min(1200px,calc(100% - 48px));margin:auto}
header{height:72px;background:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}
nav{height:100%;display:flex;align-items:center}
.logo{display:flex;align-items:center;font-size:21px;font-weight:700;margin-right:62px}
.mark{width:31px;height:31px;border-radius:9px;background:var(--blue);display:grid;place-items:center;color:#fff;margin-right:9px}
.links{display:flex;gap:30px;font-size:14px;color:#424a57}
.links a:hover,.links a.active{color:var(--blue)}
.right{margin-left:auto;display:flex;align-items:center;gap:22px;font-size:14px}
.btn{display:inline-block;padding:13px 23px;border-radius:7px;background:var(--blue);color:white;font-weight:650}
.hero{padding:105px 0 90px;background:linear-gradient(180deg,#fff,#f7faff);text-align:center}
.kicker{color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.hero h1{font-size:56px;letter-spacing:-2.3px;line-height:1.13;margin:20px auto;max-width:850px}
.hero p{max-width:680px;margin:auto;color:var(--muted);font-size:18px;line-height:1.7}
.section{padding:100px 0}
.section.soft{background:var(--soft)}
.heading{font-size:40px;letter-spacing:-1.4px;margin:0 0 18px}
.lead{color:var(--muted);line-height:1.7;max-width:650px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:45px}
.card{padding:32px;border:1px solid var(--line);border-radius:17px;background:#fff;min-height:235px}
.card .icon{width:52px;height:52px;border-radius:14px;background:#edf4ff;color:var(--blue);display:grid;place-items:center;font-size:24px}
.card h3{font-size:20px;margin:32px 0 10px}
.card p{color:#78818e;line-height:1.65;font-size:14px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.visual{height:420px;border-radius:28px;background:linear-gradient(145deg,#edf4ff,#dbe9ff);position:relative;overflow:hidden;display:grid;place-items:center}
.device{width:215px;height:350px;border:8px solid #17191e;border-radius:34px;background:#fff;box-shadow:0 30px 55px #28477044;transform:rotate(5deg);padding:34px 16px}
.device:before{content:"";display:block;width:75px;height:17px;background:#17191e;border-radius:20px;position:absolute;top:9px;left:62px}
.screen{height:125px;border-radius:15px;background:linear-gradient(135deg,#2d7df5,#66a4ff);color:#fff;padding:18px;font-size:12px}
.screen b{display:block;font-size:24px;margin-top:12px}
.list{margin-top:18px}
.list i{display:block;height:38px;border-bottom:1px solid var(--line)}
.chain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:50px}
.chain{aspect-ratio:1;background:#fff;border-radius:50%;display:grid;place-items:center;color:var(--blue);font-size:26px;box-shadow:0 12px 30px #21467918}
.post{display:grid;grid-template-columns:220px 1fr auto;gap:28px;padding:28px 0;border-bottom:1px solid var(--line);align-items:center}
.thumb{height:125px;border-radius:15px;background:linear-gradient(135deg,#176bfa,#83b4ff)}
.post h3{margin:0 0 10px}
.post p{margin:0;color:var(--muted);line-height:1.6}
.post time{color:#a0a7b1;font-size:13px}
.faq{max-width:850px;margin:40px auto 0}
.faq details{border-bottom:1px solid var(--line);padding:22px 0}
.faq summary{font-weight:650;cursor:pointer}
.faq p{color:var(--muted);line-height:1.7}
.blue-cta{padding:72px 0;background:var(--blue);color:#fff}
.blue-cta .shell{display:flex;align-items:center;justify-content:space-between}
.blue-cta h2{font-size:36px;margin:0}
.blue-cta .btn{background:#fff;color:var(--blue)}
footer{padding:70px 0 30px}
.foot{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:38px}
.foot h4{font-size:14px}
.foot a{display:block;color:#7d8591;font-size:13px;margin:12px 0}
.copyright{border-top:1px solid var(--line);margin-top:55px;padding-top:23px;color:#9aa1aa;font-size:11px}
.menu{display:none}
.no-wrap{white-space:nowrap}
.cards.two-column{grid-template-columns:1fr 1fr}
.thumb.thumb-dark{background:linear-gradient(135deg,#17243a,#176bfa)}
.thumb.thumb-light{background:linear-gradient(135deg,#9cc3ff,#eef5ff)}


@media(max-width:850px){.links{display:none}
.links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:0;padding:14px 24px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 28px rgba(28,48,80,.08)}.links.open a{padding:12px 0}
.menu{display:block}
.hero h1{font-size:43px}
.cards{grid-template-columns:1fr}
.two{grid-template-columns:1fr}
.post{grid-template-columns:140px 1fr}
.post time{display:none}
.foot{grid-template-columns:1fr 1fr}
.foot>div:first-child{grid-column:1/-1}
}

@media(max-width:560px){.shell{width:calc(100% - 32px)}
.right span,.right .btn{display:none}
.hero{padding:72px 0}
.hero h1{font-size:38px}
.hero p{font-size:16px}
.section{padding:70px 0}
.heading{font-size:32px}
.visual{height:360px}
.chain-grid{padding:25px;gap:10px}
.post{grid-template-columns:1fr}
.thumb{height:180px}
.blue-cta .shell{display:block}
.blue-cta h2{margin-bottom:25px}
.foot{grid-template-columns:1fr 1fr}
}