:root{
  --bg:#ffffff;--bg2:#f5f5f7;--fg:#1d1d1f;--muted:#6e6e73;--line:rgba(0,0,0,.09);
  --card:#ffffff;--accent:#0a66ff;--accent2:#7b5cff;--accent3:#00b3a4;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 8px 30px rgba(0,0,0,.06);
  --radius:20px;--max:1120px;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0b0b0d;--bg2:#141417;--fg:#f5f5f7;--muted:#a1a1a6;--line:rgba(255,255,255,.1);
  --card:#17171b;--accent:#4c8dff;--accent2:#9b84ff;--accent3:#2fd3c4;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 30px rgba(0,0,0,.35);
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;letter-spacing:-.02em;color:var(--fg)}
.brand:hover{text-decoration:none}
.logo{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:grid;place-items:center;color:#fff;font-size:16px;font-weight:800}
.nav nav{display:flex;align-items:center;gap:26px}
.nav nav a{color:var(--muted);font-size:14px}
.nav nav a:hover{color:var(--fg);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font-size:15px;font-weight:600;background:var(--fg);color:var(--bg)!important;transition:transform .15s ease,opacity .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px);opacity:.9}
.btn.ghost{background:transparent;color:var(--fg)!important;border:1px solid var(--line)}
.btn.sm{padding:7px 14px;font-size:13px}

/* hero */
.hero{position:relative;padding:96px 0 80px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-30% -10% auto -10%;height:120%;background:
  radial-gradient(40% 40% at 20% 30%,color-mix(in srgb,var(--accent) 22%,transparent),transparent 70%),
  radial-gradient(35% 35% at 80% 20%,color-mix(in srgb,var(--accent2) 22%,transparent),transparent 70%),
  radial-gradient(30% 30% at 65% 75%,color-mix(in srgb,var(--accent3) 16%,transparent),transparent 70%);
  filter:blur(20px);z-index:-1}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--muted);background:var(--card);border:1px solid var(--line);padding:6px 12px;border-radius:999px;margin-bottom:22px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent3);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent3) 25%,transparent)}
h1{font-size:clamp(40px,6.2vw,68px);line-height:1.04;letter-spacing:-.035em;margin:0 0 22px;font-weight:700}
.grad{background:linear-gradient(90deg,var(--accent),var(--accent2) 60%,var(--accent3));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:21px;line-height:1.5;color:var(--muted);max-width:560px;margin:0 0 32px}
.cta{display:flex;gap:12px;flex-wrap:wrap}

/* device mockup */
.devices{position:relative;height:520px}
.phone{position:absolute;right:40px;top:0;width:250px;height:510px;border-radius:44px;background:#0d0d10;padding:11px;box-shadow:0 30px 80px rgba(0,0,0,.25),inset 0 0 0 2px #2a2a30;animation:float 7s ease-in-out infinite}
.screen{width:100%;height:100%;border-radius:34px;overflow:hidden;background:var(--bg2);position:relative;padding:46px 16px 16px}
.island{position:absolute;top:12px;left:50%;transform:translateX(-50%);width:84px;height:24px;border-radius:20px;background:#0d0d10}
.s-title{font-size:22px;font-weight:700;letter-spacing:-.02em;margin:0 0 12px;color:var(--fg)}
.s-card{background:var(--card);border-radius:16px;padding:12px;margin-bottom:10px;box-shadow:var(--shadow)}
.s-row{display:flex;align-items:center;gap:10px}
.s-ic{width:32px;height:32px;border-radius:9px;flex:none}
.s-line{height:8px;border-radius:4px;background:var(--line);margin:5px 0}
.s-chart{display:flex;align-items:flex-end;gap:6px;height:70px;margin-top:6px}
.s-chart i{flex:1;border-radius:4px 4px 2px 2px;background:linear-gradient(var(--accent),var(--accent2))}
.browser{position:absolute;left:0;bottom:24px;width:300px;border-radius:14px;background:var(--card);border:1px solid var(--line);box-shadow:0 20px 50px rgba(0,0,0,.18);overflow:hidden;animation:float 7s ease-in-out -3.5s infinite}
.browser .bar{display:flex;gap:6px;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--bg2)}
.browser .bar i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.browser .bar i:nth-child(1){background:#ff5f57}.browser .bar i:nth-child(2){background:#febc2e}.browser .bar i:nth-child(3){background:#28c840}
.bbody{padding:16px}
.bgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.bgrid b{height:54px;border-radius:10px;opacity:.85}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* platforms strip */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.strip .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px;padding-top:22px;padding-bottom:22px}
.strip span{color:var(--muted);font-size:15px;font-weight:500;display:flex;align-items:center;gap:8px}
.strip svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}

/* sections */
section.sec{padding:110px 0}
section.alt{background:var(--bg2)}
.kicker{font-size:14px;font-weight:600;color:var(--accent);letter-spacing:.02em;margin:0 0 10px}
h2{font-size:clamp(30px,4.2vw,46px);line-height:1.1;letter-spacing:-.03em;margin:0 0 18px}
.sub{font-size:19px;color:var(--muted);max-width:640px;margin:0 0 56px}
h3{font-size:19px;letter-spacing:-.01em;margin:0 0 8px}

.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);transition:transform .2s ease}
.card:hover{transform:translateY(-3px)}
.card p{margin:0;color:var(--muted);font-size:16px}
.icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:20px;color:#fff}
.icon svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.i1{background:linear-gradient(135deg,#0a66ff,#4c8dff)}
.i2{background:linear-gradient(135deg,#7b5cff,#b38cff)}
.i3{background:linear-gradient(135deg,#00a896,#2fd3c4)}
.i4{background:linear-gradient(135deg,#ff6b3d,#ffa24c)}
.i5{background:linear-gradient(135deg,#ff3d77,#ff8fb1)}
.i6{background:linear-gradient(135deg,#1d1d1f,#5a5a62)}

/* about split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split p{color:var(--muted);font-size:18px;margin:0 0 18px}
.facts-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px 28px;box-shadow:var(--shadow)}
.facts-card div{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-bottom:1px solid var(--line);font-size:16px}
.facts-card div:last-child{border-bottom:0}
.facts-card dt{color:var(--muted);margin:0}
.facts-card dd{margin:0;font-weight:600;text-align:right}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{position:relative;padding:28px 24px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line)}
.step::before{counter-increment:s;content:"0" counter(s);display:block;font-size:14px;font-weight:700;color:var(--accent);margin-bottom:28px;font-variant-numeric:tabular-nums}
.step p{margin:0;color:var(--muted);font-size:15px}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:15px;font-weight:500}

/* faq */
.faq{max-width:820px}
details{border-bottom:1px solid var(--line);padding:22px 0}
summary{cursor:pointer;font-size:18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:20px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-weight:400;font-size:24px;line-height:1;color:var(--muted);transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);margin:12px 0 0}

/* cta band */
.band{border-radius:32px;padding:72px 48px;text-align:center;color:#fff;background:linear-gradient(135deg,#0a66ff,#7b5cff 60%,#00b3a4);position:relative;overflow:hidden}
.band h2{color:#fff}
.band p{color:rgba(255,255,255,.85);font-size:19px;max-width:560px;margin:0 auto 30px}
.band .btn{background:#fff;color:#111!important}

/* footer */
footer{border-top:1px solid var(--line);padding:64px 0 40px;margin-top:110px;font-size:14px;color:var(--muted)}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:48px}
footer h4{color:var(--fg);font-size:14px;margin:0 0 14px}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin:0 0 10px}
footer a{color:var(--muted)}
footer a:hover{color:var(--fg)}
footer .base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid var(--line);padding-top:24px}

/* document pages */
.doc{max-width:760px;padding-top:72px}
.doc h1{font-size:clamp(36px,5vw,52px)}
.doc h2{font-size:24px;margin-top:44px;letter-spacing:-.015em}
.doc p,.doc li{font-size:17px}
.doc .muted{color:var(--muted)}
.doc + footer{margin-top:80px}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}

/* responsive */
@media (max-width:980px){
  .hero .wrap,.split{grid-template-columns:1fr}
  .devices{height:440px;max-width:420px;margin:0 auto;width:100%}
  .phone{width:220px;height:450px;right:0}
  .g3,.g4,.steps{grid-template-columns:repeat(2,1fr)}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .nav nav a:not(.btn){display:none}
  .hero{padding:64px 0 48px}
  .lead{font-size:18px}
  .devices{height:420px}
  .phone{animation:none}
  .browser{width:230px}
  section.sec{padding:76px 0}
  .g3,.g4,.g2,.steps{grid-template-columns:1fr}
  .band{padding:56px 24px;border-radius:24px}
  .strip .wrap{justify-content:center}
}