*{box-sizing:border-box}

body{
    margin:0;
    font-family:Arial,sans-serif;
    background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
    color:#1f2937;
    line-height:1.6;
}

.site-header{
    position: sticky;
    top: 0;
    background: rgba(10, 37, 64, 0.78);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #fff;
    padding: 18px 8%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
}

.site-footer{
    background: rgba(17, 24, 39, 0.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff;
    text-align: center;
    padding: 40px 8%;
    border-top: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 -6px 18px rgba(0,0,0,.10);
}

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

.logo{
    font-size:28px;
    font-weight:700;
}

.nav-links{
    list-style:none;
    display:flex;
    gap:28px;
    margin:0;
    padding:0;
}

.nav-links a{
    color:#fff;
    text-decoration:none;
    font-weight:600;
    transition:opacity .2s ease;
}

.nav-links a:hover{
    opacity:.8;
}

.hero{
    background:linear-gradient(rgba(10,37,64,.72),rgba(10,37,64,.72)),url('https://images.unsplash.com/photo-1552664730-d307ca884978?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
    color:#fff;
    padding:140px 8%;
}

.hero h1{
    font-size:58px;
    max-width:900px;
    line-height:1.1;
    margin:0 0 18px;
}

.hero p{
    font-size:22px;
    max-width:700px;
}

.btn{
    display:inline-block;
    margin-top:20px;
    background:#2563eb;
    color:#fff;
    padding:14px 26px;
    border-radius:10px;
    text-decoration:none;
    font-weight:700;
}

section{
    padding:80px 8%;
    background: rgba(255,255,255,0.25);
    border-radius: 24px;
    margin: 30px 5%;
}

.section-title{
    font-size:42px;
    margin-bottom:30px;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
    gap:24px;
}

.card{
    background:linear-gradient(135deg,#ffffff 0%,#eef4ff 100%);
    border-left:5px solid #2563eb;
    padding:28px;
    border-radius:18px;
    box-shadow:0 8px 24px rgba(0,0,0,.08);
    transition:transform .25s ease, box-shadow .25s ease;
}

.card:hover{
    transform:translateY(-8px);
    box-shadow:0 16px 32px rgba(37,99,235,.18);
}

.card h3{
    margin-top:0;
    color:#0a2540;
}

.cta{
    background:linear-gradient(135deg,#0a2540 0%,#163b63 100%);
    color:#fff;
    text-align:center;
    border-radius:24px;
    margin:0 8% 80px;
    padding:60px 30px;
}


@media(max-width:768px){
    .navbar{flex-direction:column;gap:14px}
    .hero h1{font-size:40px}
    .hero p{font-size:18px}
    .nav-links{gap:16px;flex-wrap:wrap;justify-content:center}
}