:root{
  --sun:#F9B233;
  --water:#1E88E5;
  --green:#2E7D32;
  --dark:#0f172a;
  --light:#ffffff;
  --bg:#f6fbff;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:"Segoe UI",Arial,sans-serif;
  color:var(--dark);
  background:var(--bg);
  line-height:1.65;
}
header{
  background:#fff;
  border-bottom:4px solid var(--water);
  padding:18px 8%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  position:sticky;
  top:0;
  z-index:100;
}
header img{height:64px}
nav a{
  margin-left:22px;
  text-decoration:none;
  font-weight:600;
  color:var(--dark);
}
nav a:hover{color:var(--water)}
section{padding:80px 8%}
.hero{
  background:linear-gradient(rgba(0,40,90,.55),rgba(0,40,90,.55)),url('hero-water.jpg') center/cover no-repeat;
  color:#fff;
  min-height:75vh;
  display:flex;
  align-items:center;
}
.hero h1{font-size:3rem;margin-bottom:18px}
.hero p{font-size:1.2rem;max-width:900px}
.btn{
  background:var(--sun);
  color:#000;
  padding:14px 28px;
  border-radius:6px;
  font-weight:700;
  text-decoration:none;
  display:inline-block;
  margin-top:28px;
}
.btn.alt{background:transparent;color:#fff;border:2px solid #fff;margin-left:12px}
h2{color:var(--water);font-size:2.1rem;margin-bottom:26px}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:28px;
}
.card{
  background:#fff;
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 10px 28px rgba(30,136,229,.12);
}
.card img{width:100%;height:220px;object-fit:cover}
.card div{padding:26px}
.stats{
  background:linear-gradient(90deg,var(--water),var(--green));
  color:#fff;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:24px;
  text-align:center;
}
.stat strong{font-size:2.4rem;color:var(--sun)}
footer{
  background:#021a33;
  color:#dbeafe;
  padding:42px 8%;
  text-align:center;
  font-size:.95rem;
}
footer p{margin-top:10px}