.k1{
    background:#005baa;
    color:white;
    text-align:center;
    padding:30px 0;
}
.k1 h1{
  font-weight: 700;
  font-size: 45px;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}
.k1 p{
  font-style:italic;
  font-size:22px;
  margin:5px 0 0;
}
.menu{
  background:#007bff;
  text-align:center;
  padding:10px 0;
}
.menu a{
  color: white;
  text-decoration:none;
  margin:0 15px;
  font-weight:600;
  font-size:20px;
}
section{
  background:white;
  padding:40px 25px;
  right:40px auto;
  border-radius:10px;
  box-shadow:0 3px 8px rgba(0,0,0,.1);
  max-width:1100px;
}
.tieude{
  color:#005baa;
  border-bottom:3px solid #005baa;
  padding-bottom:6px;
  margin-bottom:25px;
  font-weight:700;
}
.hinh{
  position:relative;
  width:100%;
  height:420px;
  overflow:hidden;
  border-radius:12px;
  box-shadow:0 4px 12px rgba(0,0,0,.2);
  margin-bottom:30px;
}
.anhs{
  display:flex;
  transition:.8s;
}
.anh{
  min-width:100%;
}
.anh img{
  width:100%;
  height:420px;
  object-fit:cover;
}
.trai,.phai{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  font-size:40px;
  color:white;
  background:rgba(0,0,0,.4);
  padding:8px 16px;
  border-radius:50%;
  cursor:pointer;
  user-select:none;
}
.trai:hover,.phai:hover{
  background:rgba(0,0,0,.7);
}
.trai{
  left:15px;
}.phai{
  right:15px;
}
.khoi-dichvu{
  background:#e9f0fb;
  border-radius:10px;
  padding:20px;
  box-shadow:0 2px 6px rgba(0,0,0,.1);
}
.khoi-dichvu:hover{
  background:#d0e2fc;
}
.khoi-tintuc{
  display:flex;
  gap:15px;
  background:#f4f8ff;
  border-radius:10px;
  box-shadow:0 2px 6px rgba(0,0,0,.1);
  padding:15px;
  margin-bottom:15px;
}
.khoi-tintuc:hover{
  background:#d0e2fc;
}
.khoi-tintuc img{
  width:150px;
  height:100px;
  object-fit:cover;
  border-radius:8px;
}
.nd-tintuc h3{
  color:#003f7f;
  font-size:19px;
  margin-bottom:5px;
}
#Lienhe {
  width: 90%;             
  max-width: 600px;       
  margin: 0 auto;         
  padding: 20px;
}
#Lienhe form {
  background: #f8f9fa;    
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
label{
  font-weight:600;
  color:#003f7f;
}
.btn-primary{
  background:#005baa;
  border:#005baa;
  font-weight:600;
}
.btn-primary:hover {
  background: #003f7f;
  border-color: #003f7f;
  box-shadow: 0 0 10px rgba(0,91,170,0.4);
}
.footer{
  background:#02284e;
  color:white;
  text-align:center;
  padding:25px 10px;
  font-size: 15px;
  line-height:1.7;
}
.footer h3{
  font-size:18px;
  margin:0 0 8px;
}
.footer a{
  color:#9ad0ff;
  text-decoration:none;
}
.footer a:hover{
  text-decoration:underline;
}
.mxh{
  width: 100%;
  height: 50px;
  background-color:#02284e;
  color: white;
}
.mxh a{
  margin-right: 10px;
}
.mxh img{
  width:40px;
  margin:5px 8px;
  transition:0.3s;
}
.mxh img:hover{
  transform:scale(1.1);
  filter:brightness(1.2);
}