:root{--bg:#000;--fg:#f5f5f7;--mut:#a1a1a6;--line:rgba(255,255,255,.12);--card:rgba(255,255,255,.04);
--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--font);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
.bg{position:fixed;inset:0;z-index:-1;background:url(assets/circuit.svg) 0 0/240px;opacity:.07;
-webkit-mask-image:radial-gradient(ellipse at 50% 20%,#000 0%,transparent 75%);mask-image:radial-gradient(ellipse at 50% 20%,#000 0%,transparent 75%)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);background:rgba(0,0,0,.72);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;letter-spacing:-.01em}
.brand img{width:28px;height:28px;border-radius:7px}
nav ul{display:flex;gap:24px;list-style:none;font-size:14px}
nav ul a{text-decoration:none;color:var(--mut);transition:color .2s}nav ul a:hover,nav ul a[aria-current]{color:var(--fg)}
.hero{text-align:center;padding:96px 0 72px}
.hero .icon{width:156px;height:156px;border-radius:35px;box-shadow:0 0 0 1px var(--line),0 30px 80px rgba(255,255,255,.08);animation:rise .9s cubic-bezier(.2,.8,.2,1) both}
.eyebrow{margin-top:32px;font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
h1{font-size:clamp(44px,7vw,84px);font-weight:700;letter-spacing:-.035em;line-height:1.03;margin-top:12px}
h1 span{background:linear-gradient(180deg,#fff,#8e8e93);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:620px;margin:22px auto 0;font-size:clamp(18px,2.2vw,22px);color:var(--mut)}
.cta{margin-top:36px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;align-items:center}
.store{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#000;text-decoration:none;padding:12px 22px;border-radius:14px;transition:transform .2s cubic-bezier(.2,.8,.2,1)}
.store:active{transform:scale(.96)}.store:hover{transform:translateY(-1px)}
.store svg{width:24px;height:24px}.store small{display:block;font-size:11px;line-height:1}.store b{font-size:19px;line-height:1.1;font-weight:600}
.price{font-size:14px;color:var(--mut)}
section{padding:72px 0;border-top:1px solid var(--line)}
h2{font-size:clamp(30px,4.4vw,48px);letter-spacing:-.03em;line-height:1.1;font-weight:700;text-align:center}
.sub{text-align:center;color:var(--mut);margin:14px auto 0;max-width:560px;font-size:18px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:30px;transition:transform .3s cubic-bezier(.2,.8,.2,1),border-color .3s}
.card:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.25)}
.card .ic{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;margin-bottom:18px}
.card h3{font-size:20px;letter-spacing:-.01em;margin-bottom:8px}.card p{color:var(--mut);font-size:16px}
.topics{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:40px}
.topics span{border:1px solid var(--line);border-radius:999px;padding:9px 16px;font-size:15px;background:var(--card)}
.q{max-width:760px;margin:40px auto 0}
details{border-bottom:1px solid var(--line);padding:20px 0}
summary{cursor:pointer;font-size:18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::after{content:"+";color:var(--mut);font-weight:400;transition:transform .25s}details[open] summary::after{transform:rotate(45deg)}
details p,details ol{color:var(--mut);margin-top:12px}details ol{padding-left:20px}
.page{padding:80px 24px 40px}.page h1{font-size:clamp(38px,6vw,64px);text-align:center}
.prose{max-width:720px;margin:40px auto 0}.prose h2{text-align:left;font-size:24px;margin:36px 0 10px}
.prose p,.prose li{color:#d2d2d7;margin-bottom:10px}.prose ul{padding-left:22px}
.contact{max-width:520px;margin:36px auto 0;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:32px}
.contact a.mail{display:inline-block;margin-top:10px;font-size:20px;font-weight:600}
footer{border-top:1px solid var(--line);padding:36px 0 48px;color:var(--mut);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}footer a{text-decoration:none}footer a:hover{color:var(--fg)}
@keyframes rise{from{opacity:0;transform:translateY(16px) scale(.96)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media (max-width:760px){.grid{grid-template-columns:1fr}.hero{padding:64px 0 56px}.hero .icon{width:120px;height:120px;border-radius:27px}nav ul{gap:16px}section{padding:56px 0}.brand span{display:none}}