:root{
 --primary:#2563eb;
 --secondary:#0f766e;
 --bg:#f8fafc;
 --text:#1e293b;
 --card:#ffffff;
 --border:#e2e8f0;
}

*{box-sizing:border-box}

body{
 margin:0;
 font-family:Inter,Arial,sans-serif;
 background:var(--bg);
 color:var(--text);
 line-height:1.7;
}

.site-header{
 background:white;
 border-bottom:1px solid var(--border);
 position:sticky;
 top:0;
 z-index:1000;
}

.container{
 width:min(1120px,92%);
 margin:auto;
}

.nav{
 display:flex;
 justify-content:space-between;
 align-items:center;
 padding:1rem 0;
}

.logo{
 font-size:1.5rem;
 font-weight:700;
 color:var(--primary);
}

.nav-links a{
 text-decoration:none;
 color:var(--text);
 margin-left:1.25rem;
 font-weight:600;
}

.hero{
 padding:5rem 0;
}

.hero h1{
 font-size:3rem;
 margin-bottom:1rem;
}

.hero p{
 font-size:1.2rem;
 max-width:760px;
}

.btn{
 display:inline-block;
 background:var(--primary);
 color:white;
 padding:0.9rem 1.4rem;
 border-radius:10px;
 text-decoration:none;
 margin-top:1.5rem;
 font-weight:700;
}

.content{
 padding:3rem 0;
}

.card{
 background:white;
 border:1px solid var(--border);
 border-radius:18px;
 padding:2rem;
 margin-bottom:2rem;
 box-shadow:0 6px 20px rgba(0,0,0,0.05);
}

img{
 max-width:100%;
 border-radius:12px;
}

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

td,th{
 border:1px solid var(--border);
 padding:0.8rem;
}

footer{
 background:#0f172a;
 color:white;
 padding:2rem 0;
 margin-top:4rem;
}

footer p{
 margin:0;
}

@media(max-width:768px){
 .hero h1{
   font-size:2.2rem;
 }
 .nav{
   flex-direction:column;
   gap:1rem;
 }
 .nav-links{
   display:flex;
   flex-wrap:wrap;
   justify-content:center;
 }
}