:root {
            --primary: #002d4a;
            --secondary: #1e5f74;
            --accent: #d4a373;
            --bg: #f8f9fa;
            --white: #ffffff;
            --text: #1a1a1a;
            --shadow: 0 15px 35px rgba(0,0,0,0.1);
        }

        body { font-family: 'Inter', -apple-system, sans-serif; margin: 0; background: var(--bg); color: var(--text); overflow-x: hidden; }

        /* Navigation */
        nav { 
            display: flex; justify-content: space-between; align-items: center;
            padding: 15px 5%; background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
        }
        .logo { font-weight: 900; font-size: 1.4rem; color: var(--primary); text-decoration: none; letter-spacing: -1px; }
        .nav-links a { margin-left: 25px; text-decoration: none; color: var(--text); font-weight: 500; font-size: 0.9rem; transition: 0.3s; }
        .nav-links a:hover { color: var(--secondary); }

        /* Optimized Video Hero (1/3 Screen Height) */
        .hero {
            position: relative;
            height: 35vh;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            color: white;
            text-align: center;
            background: var(--primary); /* Fallback color */
        }
        #hero-video {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 100%;
            height: 100%;
            transform: translate(-50%, -50%);
            z-index: 0;
            object-fit: cover;
            opacity: 0.7;
        }
        .hero-content { 
            position: relative;
            z-index: 10; 
            text-shadow: 0 2px 15px rgba(0,0,0,0.7);
        }
        .hero h1 { font-size: 3.5rem; font-weight: 900; margin: 0; letter-spacing: -2px; }
        .hero p { font-size: 1.25rem; font-weight: 300; margin-top: 5px; opacity: 0.9; }

        /* Main Content Layout */
        main { max-width: 1200px; margin: -50px auto 80px; padding: 0 20px; position: relative; z-index: 10; }
        
        .intro { 
            background: var(--white); 
            padding: 40px; 
            border-radius: 12px; 
            box-shadow: var(--shadow); 
            text-align: center; 
            margin-bottom: 40px; 
        }
        .intro h2 { color: var(--primary); font-size: 2rem; margin-top: 0; }

        /* Content Grid */
        .grid { 
            display: grid; 
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); 
            gap: 30px; 
        }
        .card { 
            background: var(--white); 
            border-radius: 12px; 
            overflow: hidden; 
            box-shadow: var(--shadow); 
            transition: transform 0.4s ease; 
            display: flex;
            flex-direction: column;
        }
        .card:hover { transform: translateY(-8px); }
        
        .card-img { 
            height: 240px; 
            background-size: cover; 
            background-position: center; 
        }
        .card-body { padding: 30px; flex-grow: 1; display: flex; flex-direction: column; }
        .card h3 { margin: 0 0 12px; font-size: 1.5rem; color: var(--primary); }
        .card p { font-size: 1rem; color: #555; line-height: 1.6; margin-bottom: 25px; }
        
        .btn { 
            margin-top: auto;
            display: inline-block; 
            padding: 12px 24px; 
            background: var(--primary); 
            color: white; 
            text-decoration: none; 
            border-radius: 8px; 
            font-weight: 600; 
            font-size: 0.9rem;
            text-align: center;
            transition: background 0.3s;
        }
        .btn:hover { background: var(--secondary); }

        /* Footer */
        footer { background: var(--primary); color: #cbd5e0; padding: 80px 5% 40px; text-align: center; margin-top: 60px; }
        .footer-links { margin-bottom: 30px; }
        .footer-links a { color: white; margin: 0 15px; text-decoration: none; font-size: 0.9rem; opacity: 0.8; }
        .footer-links a:hover { opacity: 1; }
        .copyright { font-size: 0.8rem; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 30px; }

        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            main { margin-top: -30px; }
            .grid { grid-template-columns: 1fr; }
        }