:root{
  --ink:#1a1a1a;
  --paper:#fafaf7;
  --muted:#6b6b6b;
  --line:#e2e2dc;
  --accent:#0a4d68;
  --max:1080px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--paper);
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

/* Header */
.site-header{
  max-width:var(--max);
  margin:0 auto;
  padding:24px 20px 0;
}
.brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-size:24px;
  letter-spacing:.18em;
  font-weight:600;
  color:var(--ink);
}
.hamburger{
  display:none;
  background:none;border:0;cursor:pointer;
  width:32px;height:32px;
  flex-direction:column;justify-content:center;gap:5px;
}
.hamburger span{
  display:block;height:2px;background:var(--ink);
}

.main-nav ul{
  list-style:none;
  display:flex;
  gap:28px;
  margin:20px 0 0;
  padding:0;
  border-bottom:1px solid var(--line);
}
.main-nav a{
  display:block;
  padding:0 0 12px;
  color:var(--ink);
  font-size:14px;
  letter-spacing:.06em;
  text-transform:uppercase;
}

/* Banner */
.banner{max-width:var(--max);margin:0 auto}
.banner img{width:100%;height:auto;border-radius:2px}

/* Hero */
.hero,.intro,.content{
  max-width:var(--max);
  margin:0 auto;
  padding:56px 20px;
}
.hero h1{
  font-size:42px;
  line-height:1.15;
  margin:0 0 16px;
  font-weight:600;
  letter-spacing:-.01em;
}
.lead{
  font-size:19px;
  color:var(--muted);
  max-width:640px;
  margin:0 0 32px;
}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-block;
  padding:12px 22px;
  border-radius:2px;
  font-size:14px;
  letter-spacing:.05em;
  text-transform:uppercase;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#083b50;text-decoration:none}
.btn-ghost{border:1px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;text-decoration:none}

/* Footer */
.site-footer{
  max-width:var(--max);
  margin:80px auto 0;
  padding:28px 20px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
}
.site-footer p{margin:4px 0}

/* Mobile */
@media (max-width:720px){
  .hamburger{display:flex}
  .main-nav{
    display:none;
  }
  .main-nav.open{display:block}
  .main-nav ul{
    flex-direction:column;
    gap:0;
    margin-top:16px;
  }
  .main-nav a{
    padding:14px 0;
    border-bottom:1px solid var(--line);
  }
  .hero h1{font-size:30px}
  .lead{font-size:17px}
}