:root {
    --primary-color: #005b96;
    --secondary-color: #b3cde0;
    --text-color: #333333;
    --bg-light: #f4f7f6;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

.section {
    padding: 4rem 0;
}

.bg-light { background-color: var(--bg-light); }
.bg-primary { background-color: var(--primary-color); color: var(--white); }
.text-white { color: var(--white); text-decoration: none; }
.text-center { text-align: center; }

header {
    background: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 { color: var(--primary-color); font-size: 1.5rem; }
.logo p { font-size: 0.8rem; color: #666; }

nav ul { list-style: none; display: flex; gap: 1.5rem; }
nav a { text-decoration: none; color: var(--text-color); font-weight: 600; transition: color 0.3s; }
nav a:hover { color: var(--primary-color); }

.hero {
    background: linear-gradient(rgba(0, 91, 150, 0.8), rgba(0, 91, 150, 0.8)), url('https://images.unsplash.com/photo-1579684385127-1ef15d508118?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover;
    color: var(--white);
    text-align: center;
    padding: 6rem 0;
}

.hero h2 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto; }

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: background 0.3s;
}
.btn:hover { background: var(--secondary-color); }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-top: 4px solid var(--primary-color);
}

.card h3, .card h4 { color: var(--primary-color); margin-bottom: 1rem; }

.contact-details { margin-top: 2rem; font-size: 1.2rem; }
.contact-details p { margin-bottom: 0.5rem; }

footer {
    background: #222;
    color: #ccc;
    padding: 2rem 0;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header-container { flex-direction: column; text-align: center; gap: 1rem; }
    nav ul { flex-wrap: wrap; justify-content: center; }
}