:root {
    --navy: #0a192f;
    --tan: #d2b48c;
    --light-grey: #f8f9fa;
    --text-main: #333;
    --text-light: #fff;
    --max-width: 1100px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    line-height: 1.6;
    color: var(--text-main);
    background-color: #fff;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: #fff;
    padding: 15px 0;
    border-bottom: 4px solid var(--tan);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--navy);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.main-nav a:hover {
    color: var(--tan);
}

/* Hero */
.hero {
    background: linear-gradient(rgba(10, 25, 47, 0.8), rgba(10, 25, 47, 0.8)), url('https://images.unsplash.com/photo-1449824913935-59a10b8d2000?auto=format&fit=crop&q=80&w=1920') center/cover;
    color: var(--text-light);
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    background: var(--tan);
    color: var(--navy);
    padding: 12px 30px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    margin-top: 20px;
}

/* Sections */
.section {
    padding: 80px 0;
}

.alt-bg {
    background-color: var(--light-grey);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    background: #fff;
    padding: 30px;
    border-left: 5px solid var(--tan);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

/* Footer */
.site-footer {
    background: var(--navy);
    color: rgba(255,255,255,0.8);
    padding: 60px 0;
}

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

@media (max-width: 768px) {
    .site-header .container, .footer-grid {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}