:root{
--primary:#0B5FFF;
--accent:#1FB6FF;
--bg:#f5f7fb;
--surface:#ffffff;
--text:#0b1220;
--muted:#6b7280;
--border:#e5e7eb;
--radius:18px;
--shadow:0 20px 50px rgba(0,0,0,.08);
--max:1120px;
font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;
}

body{margin:0;background:var(--bg);color:var(--text);}

.container{width:min(var(--max),calc(100% - 40px));margin:auto;}

header{
background:white;
border-bottom:1px solid var(--border);
position:sticky;top:0;
}

.nav{display:flex;justify-content:space-between;align-items:center;padding:16px 0;}
.nav-links{display:flex;gap:20px;font-size:14px;color:var(--muted);}

.hero{
padding:70px 0 30px;
}

.hero-grid{
display:grid;
grid-template-columns:1.1fr .9fr;
gap:40px;
align-items:center;
}

h1{
font-size:48px;
line-height:1.05;
margin:10px 0;
}

.lead{
font-size:18px;
color:var(--muted);
}

.btn{
display:inline-block;
padding:12px 18px;
border-radius:12px;
font-weight:600;
margin-right:10px;
}

.btn-primary{
background:linear-gradient(90deg,var(--primary),var(--accent));
color:white;
}

.btn-outline{
border:1px solid var(--border);
background:white;
}

.mock{
background:white;
border:1px solid var(--border);
border-radius:20px;
padding:22px;
box-shadow:var(--shadow);
}

.chart{
height:120px;
background:linear-gradient(90deg,#1fbf84,#0B5FFF);
border-radius:8px;
margin-top:14px;
opacity:.8;
}

.section{
padding:70px 0;
}

.cards{
display:grid;
grid-template-columns:repeat(3,1fr);
gap:20px;
margin-top:30px;
}

.card{
background:white;
border:1px solid var(--border);
border-radius:var(--radius);
padding:22px;
box-shadow:var(--shadow);
}

.app-preview{
margin-top:40px;
display:grid;
grid-template-columns:1fr 1fr;
gap:30px;
}

.preview{
background:white;
border:1px solid var(--border);
border-radius:var(--radius);
padding:20px;
box-shadow:var(--shadow);
}

footer{
margin-top:80px;
padding:40px 0;
background:white;
border-top:1px solid var(--border);
color:var(--muted);
}

@media(max-width:900px){
.hero-grid,.app-preview{grid-template-columns:1fr;}
.cards{grid-template-columns:1fr;}
h1{font-size:34px;}
}