* {margin: 0; padding: 0; box-sizing: border-box;}
body {font-family: 'Noto Sans Bengali', sans-serif; background: #fff; color: #333;}

.container {width: 90%; max-width: 1100px; margin: auto;}

.site-header {
    background: #004080; color: #fff; padding: 15px 0;
    display: flex; justify-content: space-between; align-items: center;
}
.logo {font-size: 1.6em; font-weight: bold;}
.site-nav ul {display: flex; list-style: none; gap: 20px;}
.site-nav ul li a {color: #fff; text-decoration: none; font-weight: bold;}
.site-nav ul li a:hover {text-decoration: underline;}

.hero {background: #f4f4f4; text-align: center; padding: 70px 20px;}
.hero h2 {font-size: 2em; margin-bottom: 15px;}
.btn-primary {
    background: #0073e6; color: #fff; padding: 10px 25px; text-decoration: none;
    border-radius: 5px; display: inline-block; margin-top: 15px;
}

.services {padding: 50px 0; background: #fff;}
.services h2 {text-align: center; margin-bottom: 30px;}
.service-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
.service {
    background: #f9f9f9; padding: 25px; text-align: center;
    border-radius: 10px; box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.about, .contact {
    padding: 50px 0; text-align: center; background: #f4f4f4;
}

.site-footer {
    background: #333; color: #fff; text-align: center; padding: 15px 0;
}