*{
box-sizing:border-box;
}

html,body{
margin:0;
padding:0;
}

body{
font-family:Pretendard, Arial, sans-serif;
background:#132f52;
color:#ffffff;
line-height:1.7;
}

a{
color:#9ec3ff;
text-decoration:none;
}

img{
max-width:100%;
display:block;
}

.site-header{
position:sticky;
top:0;
z-index:20;
background:#0f2746;
border-bottom:1px solid rgba(255,255,255,0.08);
}

.header-inner{
max-width:1100px;
margin:0 auto;
padding:16px 20px;
display:flex;
align-items:center;
justify-content:space-between;
gap:20px;
}

.logo{
font-size:22px;
font-weight:700;
color:#ffffff;
}

.nav{
display:flex;
flex-wrap:wrap;
gap:14px;
justify-content:flex-end;
}

.nav a{
font-size:14px;
color:#cfe0ff;
}

.container{
max-width:900px;
margin:0 auto;
padding:40px 20px;
}

.hero{
padding:70px 20px 40px;
text-align:center;
}

.hero-inner{
max-width:900px;
margin:0 auto;
}

.hero h1{
font-size:42px;
line-height:1.25;
margin:0 0 18px;
}

.hero p{
max-width:780px;
margin:0 auto 24px;
color:#d7e5ff;
}

.btn{
display:inline-block;
padding:14px 28px;
background:#4c8dff;
color:#ffffff;
border-radius:10px;
font-weight:600;
}

.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
gap:18px;
margin-top:20px;
}

.card{
background:#173861;
border:1px solid rgba(255,255,255,0.08);
border-radius:16px;
padding:22px;
}

.card h3{
margin:0 0 10px;
font-size:20px;
}

.card p{
margin:0 0 12px;
color:#d7e5ff;
}

.content{
max-width:900px;
margin:0 auto;
padding:20px 20px 60px;
}

.content-section{
margin-bottom:42px;
}

.content h1{
font-size:38px;
line-height:1.3;
margin:0 0 18px;
}

.content h2{
font-size:28px;
line-height:1.35;
margin:0 0 14px;
}

.content h3{
font-size:20px;
line-height:1.4;
margin:22px 0 10px;
}

.content p,
.content li{
color:#d7e5ff;
}

.content ul{
padding-left:20px;
margin:10px 0 0;
}

.note-box{
background:#173861;
border:1px solid rgba(255,255,255,0.08);
border-radius:16px;
padding:20px;
margin-top:18px;
}

.table-wrap{
overflow-x:auto;
margin-top:18px;
}

table{
width:100%;
border-collapse:collapse;
background:#173861;
border-radius:14px;
overflow:hidden;
}

th,td{
padding:14px 12px;
border-bottom:1px solid rgba(255,255,255,0.08);
text-align:left;
}

th{
background:#1b416f;
color:#ffffff;
}

.ad-box{
max-width:900px;
margin:30px auto 50px;
padding:0 20px;
}

.footer{
border-top:1px solid rgba(255,255,255,0.08);
padding:32px 20px 50px;
text-align:center;
color:#c9dbff;
}

.footer-links{
display:flex;
flex-wrap:wrap;
gap:14px;
justify-content:center;
margin-bottom:12px;
}

.muted{
color:#c9dbff;
}

@media (max-width:768px){
.hero{
padding:56px 16px 30px;
}
.hero h1{
font-size:32px;
}
.content h1{
font-size:30px;
}
.content h2{
font-size:24px;
}
.header-inner{
flex-direction:column;
align-items:flex-start;
}
.nav{
justify-content:flex-start;
}
}