:root {
            --primary: #007aff;
            --secondary: #0d4f3d;
            --accent: #1bc149;
            --dark: #151414;
            --light: #f4f4f4;
            --font: 'Helvetica Neue', Helvetica, Arial, sans-serif;
        }

        body { font-family: var(--font); color: #333; line-height: 1.6; margin: 0; background: #fff; }
        header { background: var(--dark); color: white; padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; }
        .logo-box { font-weight: bold; font-size: 1.5rem; letter-spacing: 1px; }
        nav ul { display: flex; list-style: none; gap: 20px; }
        nav a { color: white; text-decoration: none; font-size: 0.9rem; }
        
        .hero { 
            height: 60vh; 
            background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('/assets/hasan-almasi-nKNm_75lH4g-unsplash%20Copy_j.jpg');
            background-size: cover; 
            background-position: center; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            color: white; 
            text-align: center; 
        }

        .container { max-width: 1100px; margin: auto; padding: 40px 20px; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .card { border: 1px solid #eee; padding: 20px; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
        .card img { width: 100%; border-radius: 4px; }

        footer { background: #000; color: #fff; text-align: center; padding: 40px; margin-top: 50px; }

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