body{
font-family:Arial,sans-serif;
margin:0;
background:#f4f7fb;
color:#1f2937;
}

.container{
max-width:1150px;
margin:auto;
padding:20px;
}

.header{
background:white;
border-bottom:2px solid #acbdd3;
position:relative;
z-index:1000;
}

.nav{
display:flex;
justify-content:space-between;
align-items:center;
}

.logo{
font-weight:bold;
font-size:20px;
color:#205692;
}

.logo a{
color:#205692;
text-decoration:none;
}

nav{
display:flex;
gap:15px;
}

nav a{
text-decoration:none;
color:#205692;
font-size:14px;
}

.menu-toggle{
display:none;
font-size:26px;
cursor:pointer;
color:#205692;
}

.hero{
background:linear-gradient(180deg,#205692,#5c7b9d);
color:white;
text-align:center;
padding:60px 20px;
}

.hero-sub{
opacity:.9;
}

.chart-wrapper{
height:300px;
background:white;
border-radius:8px;
margin-top:20px;
padding:20px;
}

.ad{
margin:40px 0;
text-align:center;
}

.ad-label{
font-size:12px;
color:#6b7280;
margin-bottom:6px;
}

.ad-box{
background:#acbdd3;
padding:40px;
border-radius:8px;
}

.calculator{
display:grid;
grid-template-columns:1fr 1fr;
gap:25px;
}

.calc-card,.result-card{
background:white;
padding:30px;
border-radius:10px;
box-shadow:0 5px 18px rgba(0,0,0,.08);
}

input{
width:100%;
padding:10px;
margin-bottom:12px;
border:1px solid #acbdd3;
border-radius:5px;
}

button{
background:#205692;
color:white;
border:none;
padding:12px;
border-radius:6px;
width:100%;
cursor:pointer;
}

#result{
font-size:60px;
font-weight:700;
color:#205692;
margin-top:15px;
}

.calc-ad{
margin-top:20px;
}

table{
width:100%;
border-collapse:collapse;
}

th{
background:#205692;
color:white;
padding:10px;
}

td{
padding:8px;
border-bottom:1px solid #ddd;
text-align:center;
}

/* FAQ */

.faq-title{
text-align:center;
margin-bottom:20px;
}

.accordion{
max-width:900px;
margin:auto;
}

.accordion-btn{
width:100%;
padding:16px;
background:#205692;
color:white;
border:none;
margin-top:10px;
cursor:pointer;
text-align:left;
border-radius:6px;
}

.accordion-content{
display:none;
background:#f4f7fb;
padding:15px;
border-radius:0 0 6px 6px;
}

/* Footer */

.footer{
background:#205692;
color:white;
margin-top:40px;
}

.footer-links{
text-align:center;
padding-top:20px;
}

.footer-links a{
color:white;
margin:0 10px;
text-decoration:none;
}

.disclaimer{
text-align:center;
padding:10px 0;
}

.copyright{
text-align:center;
padding-bottom:20px;
}

.copyright a{
color:white;
text-decoration:none;
}

/* MOBILE */

@media(max-width:900px){

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

nav{
display:none;
flex-direction:column;
background:white;
position:absolute;
top:65px;
left:0;
width:100%;
padding:20px;
border-top:1px solid #ddd;
box-shadow:0 8px 20px rgba(0,0,0,.1);
}

nav a{
padding:10px 0;
border-bottom:1px solid #eee;
}

nav.active{
display:flex;
}

.menu-toggle{
display:block;
}

#result{
font-size:42px;
}

.calc-ad{
margin-top:10px;
}

.chart-wrapper{
height:220px;
}

}