:root{
  --max-width:1100px;
  --accent:#0b74de;
  --muted:#666;
  --bg:#fff;
  --surface:#f7f8fa;
  --radius:8px;
  font-family:Inter,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:#111;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}

.container{
  max-width:var(--max-width);
  margin:0 auto;
  padding:1.25rem;
}

.header-inner{
  display:flex;
  align-items:center;
  gap:1rem;
  justify-content:space-between;
}

.site-header{
  background:#fff;
  border-bottom:1px solid #e7e9ee;
  position:sticky;
  top:0;
  z-index:30;
}

.brand img{display:block}

.main-nav a{
  margin:0 .5rem;
  color:var(--muted);
  text-decoration:none;
  font-weight:600;
}
.cta{
  background:var(--accent);
  color:#fff;
  padding:.5rem .75rem;
  border-radius:6px;
  text-decoration:none;
  font-weight:600;
}

.hero{
  padding:4rem 0;
  background:linear-gradient(180deg,#f5fbff,transparent);
}
.hero h1{
  margin:0 0 .5rem;
  font-size:2rem;
}
.hero p{color:var(--muted); margin:.25rem 0 1rem}

.btn{
  display:inline-block;
  background:var(--accent);
  color:#fff;
  padding:.6rem 1rem;
  border-radius:6px;
  text-decoration:none;
  font-weight:600;
}

.grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1rem;
}

.card{
  background:var(--surface);
  padding:1rem;
  border-radius:var(--radius);
  box-shadow:0 1px 0 rgba(0,0,0,.02);
}

.about-preview{
  padding:2rem 0;
}

.site-footer{
  border-top:1px solid #e7e9ee;
  background:#fff;
  padding:1rem 0;
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
  color:var(--muted);
}

/* Responsive */
@media (max-width:900px){
  .grid{grid-template-columns:1fr; }
  .header-inner{flex-direction:row; gap:.5rem}
  .main-nav{display:none}
  .hero h1{font-size:1.5rem}
}