*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial,Helvetica,sans-serif;
}

body{
  background:#f5f7fb;
  color:#222;
}

/* HEADER */
header{
  background:#0d47a1;
  color:#fff;
  padding:15px 20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}

header h1{
  font-size:20px;
}

/* HAMBURGER */
.hamburger{
  font-size:26px;
  cursor:pointer;
}

/* OVERLAY */
.overlay{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,.45);
  display:none;
  z-index:9;
}

/* SIDE MENU */
.side-menu{
  position:fixed;
  top:0;
  left:-280px;
  width:280px;
  height:100%;
  background:#fff;
  padding:20px;
  z-index:10;
  transition:.3s ease;
}

.side-menu.active{
  left:0;
}

.menu-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:20px;
}

.menu-header strong{
  font-size:18px;
  color:#0d47a1;
}

.close-btn{
  font-size:22px;
  cursor:pointer;
}

.side-menu a{
  display:block;
  padding:12px 0;
  text-decoration:none;
  color:#0d47a1;
  font-weight:600;
  border-bottom:1px solid #eee;
}

.side-menu a:hover{
  color:#08306b;
}

/* HERO */
.hero{
  padding:50px 20px;
  text-align:center;
  background:linear-gradient(135deg,#0d47a1,#1976d2);
  color:#fff;
}

.hero h2{
  font-size:32px;
  margin-bottom:10px;
}

.hero p{
  font-size:18px;
  opacity:.9;
}

/* PRODUCTS */
.products{
  padding:40px 20px;
  max-width:1200px;
  margin:auto;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:20px;
}

/* CARD */
.card{
  background:#fff;
  border-radius:10px;
  padding:25px;
  box-shadow:0 10px 20px rgba(0,0,0,.08);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}

.card h3{
  color:#0d47a1;
  margin-bottom:10px;
}

.card p{
  flex:1;
  font-size:15px;
  color:#555;
}

.card span{
  font-size:20px;
  font-weight:bold;
  margin:15px 0;
  color:#2e7d32;
}

.card a{
  text-align:center;
  background:#0d47a1;
  color:#fff;
  padding:12px;
  border-radius:6px;
  text-decoration:none;
  font-weight:600;
}

.card a:hover{
  background:#08306b;
}

/* FOOTER */
footer{
  background:#0d47a1;
  color:#fff;
  text-align:center;
  padding:20px;
  margin-top:40px;
}

/* MOBILE */
@media(max-width:600px){
  .hero h2{
    font-size:24px;
  }
  .hero p{
    font-size:16px;
  }
}