/* RESET */
*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
font-family:Arial, sans-serif;
background:#f5f7fb;
color:#333;
}

/* HEADER */
.header{
display:flex;
justify-content:space-between;
align-items:center;
padding:18px 60px;
background:white;
box-shadow:0 2px 10px rgba(0,0,0,0.08);
position:sticky;
top:0;
z-index:100;
}

.logo{
font-size:22px;
font-weight:bold;
}

.blue{color:#2b6cff;}
.green{color:#1bbf73;}

nav a{
margin:0 12px;
text-decoration:none;
color:#333;
font-weight:500;
transition:0.3s;
}

nav a:hover{
color:#2b6cff;
}

.register{
background:#2b6cff;
color:white;
padding:8px 15px;
border-radius:6px;
}

/* SLIDER */
.slider{
background:linear-gradient(90deg,#2b6cff,#1bbf73);
color:white;
text-align:center;
padding:15px;
font-size:20px;
font-weight:bold;
}

.slide{
display:none;
}

.slide.active{
display:block;
animation:fade 1s;
}

@keyframes fade{
from{opacity:0;}
to{opacity:1;}
}

/* HERO */
.hero{
padding:70px 80px;
background:#eaf1ff;
}

.hero h1{
font-size:36px;
margin:20px 0;
}

.hero p{
max-width:700px;
line-height:1.6;
}

.tag{
background:#1bbf73;
color:white;
padding:6px 15px;
border-radius:20px;
display:inline-block;
font-size:14px;
}

/* BUTTONS */
.buttons{
margin-top:25px;
}

.btn1{
background:#2b6cff;
color:white;
padding:12px 20px;
border-radius:6px;
text-decoration:none;
margin-right:10px;
display:inline-block;
transition:0.3s;
}

.btn1:hover{
background:#1d4ed8;
}

.btn2{
border:2px solid #2b6cff;
padding:12px 20px;
border-radius:6px;
text-decoration:none;
color:#2b6cff;
display:inline-block;
transition:0.3s;
}

.btn2:hover{
background:#2b6cff;
color:white;
}

/* TAGS */
.tags{
padding:20px;
text-align:center;
}

.tags span{
background:#eee;
padding:6px 12px;
margin:5px;
display:inline-block;
border-radius:20px;
font-size:13px;
}

/* SERVICES */
.services{
padding:60px 80px;
}

.services h2{
text-align:center;
margin-bottom:10px;
font-size:28px;
}

.subtitle{
text-align:center;
margin-bottom:40px;
color:#666;
}

.grid{
display:grid;
grid-template-columns:repeat(4,1fr);
gap:25px;
}

.card{
background:white;
padding:20px;
border-radius:12px;
box-shadow:0 5px 15px rgba(0,0,0,0.08);
transition:0.3s;
}

.card:hover{
transform:translateY(-5px);
}

.card h3{
margin-bottom:10px;
}

.card p{
font-size:14px;
line-height:1.5;
}

.card button{
margin-top:15px;
background:#1bbf73;
color:white;
border:none;
padding:10px 15px;
border-radius:6px;
cursor:pointer;
}

/* FEATURES */
.features{
text-align:center;
padding:60px 20px;
background:white;
}

.feature-grid{
display:grid;
grid-template-columns:repeat(5,1fr);
gap:20px;
margin-top:30px;
}

.feature-grid div{
background:#f8f9ff;
padding:15px;
border-radius:10px;
box-shadow:0 3px 10px rgba(0,0,0,0.05);
}

/* CONTENT */
.content{
padding:60px 80px;
background:white;
line-height:1.6;
}

/* ADVANTAGES */
.advantages{
padding:50px 80px;
background:#f0f4ff;
}

/* CTA */
.cta{
background:linear-gradient(to right,#2b6cff,#1bbf73);
color:white;
text-align:center;
padding:60px 20px;
}

.cta .btn1{
background:white;
color:#2b6cff;
}

.cta .btn2{
border:2px solid white;
color:white;
}

/* FOOTER */
footer{
background:#111;
color:white;
padding:50px 80px;
}

.footer-grid{
display:grid;
grid-template-columns:repeat(4,1fr);
gap:20px;
}

.copy{
text-align:center;
margin-top:20px;
}

/* POPUP */
.popup{
display:none;
position:fixed;
top:0;
left:0;
width:100%;
height:100%;
background:rgba(0,0,0,0.5);
justify-content:center;
align-items:center;
z-index:1000;
}

.popup-content{
background:white;
padding:30px;
border-radius:10px;
width:300px;
text-align:center;
}

.popup-content input{
width:100%;
padding:10px;
margin:10px 0;
border:1px solid #ccc;
border-radius:5px;
}

.close{
float:right;
cursor:pointer;
font-size:20px;
}

/* RESPONSIVE */
@media(max-width:900px){

.header{
flex-direction:column;
}

.grid{
grid-template-columns:repeat(2,1fr);
}

.feature-grid{
grid-template-columns:repeat(2,1fr);
}

.footer-grid{
grid-template-columns:repeat(2,1fr);
}

.hero{
padding:40px 20px;
}

}

@media(max-width:600px){

.grid{
grid-template-columns:1fr;
}

.feature-grid{
grid-template-columns:1fr;
}

.footer-grid{
grid-template-columns:1fr;
}

}