*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,sans-serif;
  color:#17394b;
  line-height:1.65;
  background:#f1f3f4;
}
header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  padding:14px 6%;
  background:#fff;
  position:sticky;
  top:0;
  z-index:1000;
  box-shadow:0 2px 10px rgba(3,31,52,.12);
}
.logo{display:block;flex:0 0 auto}
.logo img{display:block;width:460px;max-width:100%;height:auto}
nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(125px,1fr));
  gap:8px;
  align-items:center;
}
nav a{
  display:block;
  text-align:center;
  color:#fff;
  background:#075477;
  border:1px solid #075477;
  text-decoration:none;
  font-weight:bold;
  padding:9px 12px;
  border-radius:7px;
  line-height:1.25;
  transition:background .2s ease,border-color .2s ease;
}
nav a:hover{background:#078ba5;border-color:#078ba5}
a{color:#0057B8;text-decoration:none;font-weight:bold}

.hero{
  padding:20px 8% 90px;
  color:white;
  background:linear-gradient(rgba(0,35,55,0.45),rgba(0,35,55,0.55)),url("Under water sunbeams.png") center center/cover no-repeat;
  min-height:400px;
}
.hero p:first-child{
  letter-spacing:2px;
  font-weight:bold;
  color:#fff;
}
.hero h1{
  font-size:clamp(38px,5vw,62px);
  font-weight:800;
  line-height:1.1;
  color:#fff;
}
.hero h1 span{color:#fff}
.hero p{max-width:700px;color:#fff}
.hero .aop-line{
  font-size:18px;
  font-weight:800;
  color:#fff;
  background:rgba(7,56,82,0.65);
  padding:10px 14px;
  margin-top:18px;
  border-radius:6px;
  display:inline-block;
  letter-spacing:.3px;
}
.btn{
  display:inline-block;
  background:#075477;
  color:#fff;
  border:1px solid #fff;
  padding:12px 20px;
  border-radius:7px;
  margin:12px 8px 0 0;
}
.btn:hover{background:#078ba5;border-color:#078ba5}
.btn.outline{background:transparent;color:#fff;border:1px solid #fff}
.intro,section:not(.hero){padding:65px 7%}
.intro{text-align:center;max-width:1100px;margin:auto}
.intro p{max-width:850px;margin-left:auto;margin-right:auto}
.pale{background:#e5e9ec}
.cards,.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:25px}
.cards article,.steps article{
  background:#fff;
  padding:22px;
  border-radius:10px;
  box-shadow:0 6px 24px #052d4512;
}
.photo{
  height:180px;
  background:linear-gradient(140deg,#073852,#078b9e);
  color:#d7ffff;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-weight:bold;
  font-size:13px;
  letter-spacing:1px;
  border-radius:6px;
  overflow:hidden;
}
.photo img{
  width:auto;
  height:auto;
  max-width:100%;
  max-height:180px;
  object-fit:contain;
  display:block;
  border-radius:6px;
}
.cards h3{font-size:24px;font-weight:800;color:#073852}
.steps{grid-template-columns:repeat(4,1fr)}
.steps p,.cards p{color:#5a7180}
.custom{background:#062d49;color:white}
.custom h2{color:white}
.custom p{max-width:850px}
.custom small{color:#7ff4e9}
.safety{
   background:#e5e9ec;
  
  margin:20px 7%;
  padding:40px 4%!important;
  border-radius:8px;
  scroll-margin-top:160px;
}
.safety h2{color:#073852}
.safety-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:24px}
.safety-grid article{background:#fff;padding:20px;border-radius:9px}
.safety-grid h3{color:#073852;margin-top:0}
.safety-grid li{margin-bottom:8px}
.whatsapp-link{color:#087b45}
.note{font-size:12px;color:#647d8a}
footer{padding:25px 7%;background:#031f34;color:#c8e1e9}
#systems,#technology,#custom,#spares,#contact{scroll-margin-top:160px}
#spares .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
#spares .steps h3{text-align:center}
@media(max-width:900px){
  header{align-items:flex-start;flex-direction:column}
  nav{width:100%;grid-template-columns:repeat(3,minmax(0,1fr))}
  .cards,.steps{grid-template-columns:1fr}
  .safety-grid{grid-template-columns:1fr}
  .hero{padding:65px 7%}
}
@media(max-width:520px){
  nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  nav a{font-size:14px;padding:10px 7px}
  #spares .steps{grid-template-columns:1fr}
}