*{margin:0;padding:0;box-sizing:border-box;font-family:'Inter',sans-serif}
body{background:#0b3882;color:#e5e7eb;line-height:1.6}
.container{width:90%;max-width:1200px;margin:auto}
section{padding:100px 0}
h1,h2,h3{font-weight:800}
h1{font-size:48px;line-height:1.2}
h2{font-size:36px;margin-bottom:20px;text-align:center}
p{color:#cbd5e1}
.btn{
display:inline-block;
padding:16px 36px;
background:#2563eb;
color:#fff;
text-decoration:none;
font-weight:600;
border-radius:8px;
transition:0.3s;
}
.btn:hover{background:#1d4ed8}
.hero{
background:linear-gradient(135deg,#0b1220,#3b82f6);
text-align:center;
padding:140px 0;
}
.badge{
display:inline-block;
background:#f59e0b;
color:#000;
padding:8px 16px;
border-radius:30px;
font-size:14px;
font-weight:600;
margin-bottom:20px;
}
.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
gap:30px;
margin-top:50px;
}
.card{
background:#20509e;
padding:30px;
border-radius:12px;
box-shadow:0 10px 30px rgba(0,0,0,0.3);
transition:0.3s;
}
.card:hover{
transform:translateY(-6px);
box-shadow:0 15px 40px rgba(0,0,0,0.5);
}
.pricing{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
gap:40px;
margin-top:60px;
}
.price-box{
background:#20509e;
padding:50px 40px;
border-radius:16px;
text-align:center;
border:1px solid #1f2937;
}
.price{
font-size:46px;
color:#f59e0b;
margin:20px 0;
font-weight:800;
}
ul{list-style:none;margin-top:20px}
ul li{margin:12px 0;color:#d1d5db}
.highlight{
border:2px solid #2563eb;
}
footer{
background:#20509e;
text-align:center;
padding:40px;
color:#94a3b8;
font-size:14px;
margin-top:80px;
}
@media(max-width:768px){
h1{font-size:30px}
h2{font-size:26px}
.price{font-size:36px}
}

/* ===== NAVBAR ===== */

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: #0b3882;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  z-index: 1000;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo img {
  height: 40px;
}

/* Menu */

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: 0.3s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

/* Button */

.btn-nav {
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s ease;
}

.btn-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(59,130,246,0.3);
}

/* Đẩy nội dung xuống vì navbar fixed */
body {
  padding-top: 90px;
}

/*Bắt đầu Thêm cấu hình cho chế độ Mobile*/
.menu-toggle{
	display:none;
	font-size:28px;
	cursor:pointer;
	color:white;
}

/* MOBILE */

@media(max-width:768px){

	.nav-links{
	position:absolute;
	top:70px;
	left:0;
	width:100%;
	background:#0b3882;
	flex-direction:column;
	align-items:center;
	gap:20px;
	padding:30px 0;
	display:none;
	}

	.nav-links.active{
	display:flex;
	}

	.menu-toggle{
	display:block;
	}

	.btn-nav{
	margin-top:10px;
	}

}
/*Kết thúc Thêm cấu hình cho chế độ Mobile*/

/*Bắt đầu CSS hiển thị Popup ở Giữa màn hình Landing Page*/
.popup-overlay{
    display:none;
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.6);
    z-index:9999;

    justify-content:center;
    align-items:center;
}

.popup-content{
    width:600px;
    max-width:95%;
    background:#fff;
    border-radius:10px;
    padding:10px;
    position:relative;
}

.close-btn{
    position:absolute;
    top:-12px;
    right:-12px;
    width:32px;
    height:32px;
    background:#ff4d4f;
    color:white;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    font-weight:bold;
    cursor:pointer;
    box-shadow:0 2px 6px rgba(0,0,0,0.3);
}
.close-btn:hover{
    background:#d9363e;
}
@media (max-width:768px){

	.close-btn{
	    top:2px;
	    right:2px;
	}

}
/*Kết thúc CSS hiển thị Popup ở Giữa màn hình Landing Page*/