:root{
  --ah-primary:#007D84;
  --ah-primary-600:#00666A;
  --ah-ink:#0f172a;
  --ah-border:#e6eef0;
  --ah-wrap:1120px;
  --ah-h:68px;
}

.ah-wrap{
  max-width:var(--ah-wrap);
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:18px;
  justify-content:space-between;
}

/* Top header */
.ah-header{
  position:sticky; top:0; z-index:50;
  height:var(--ah-h);
  background:#ffffffcc;
  backdrop-filter:saturate(1.4) blur(6px);
  border-bottom:1px solid var(--ah-border);
}
.ah-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ah-ink);
  text-decoration:none;
  font-weight:800;
}
.ah-nav{
  display:flex;
  gap:18px;
}
.ah-nav a{
  color:var(--ah-ink);
  text-decoration:none;
  font-weight:600;
  padding:10px 8px;
  border-radius:10px;
}
.ah-nav a:hover{
  color:var(--ah-primary);
}
.ah-cta{
  appearance:none;
  border:0;
  border-radius:999px;
  padding:10px 16px;
  background:var(--ah-primary);
  color:#fff;
  font-weight:700;
  cursor:pointer;
}
.ah-cta:hover{
  background:var(--ah-primary-600);
}

/* Curved header */
.ah-curved-header{
  position:sticky;
  top:var(--ah-h);
  z-index:40;
  background:var(--ah-primary);
  padding:20px 0 26px;
  border-bottom:1px solid rgba(255,255,255,.25);
}
.ah-curved-shell{
  position:relative;
  max-width:calc(var(--ah-wrap) - 20px);
  margin:0 auto;
  height:86px;
}
.ah-curved-shape{
  position:absolute;
  inset:0;
}
.ah-curved-nav{
  position:relative;
  z-index:1;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:28px;
  padding:0 24px;
}
.ah-curved-nav a{
  color:#0b1720;
  text-decoration:none;
  font-weight:700;
  font-size:18px;
  padding:10px 14px;
  border-radius:12px;
}
.ah-curved-nav a:hover{
  background:#eef6f7;
}

/* Responsive */
@media (max-width: 980px){
  .ah-curved-shell{margin:0 12px;height:84px}
  .ah-curved-nav{gap:18px}
}
@media (max-width: 640px){
  .ah-nav{display:none}
  .ah-curved-shell{height:82px}
  .ah-curved-nav{gap:14px}
  .ah-curved-nav a{padding:8px 10px;font-size:16px}
}