:root {
            --primary-blue: #111FA2;
            --accent-yellow: #FACE68;
            --science-green: #5CB338;
            --tech-red: #FF5A5A;
        }

        body {
            font-family: "Inter Tight", sans-serif;
            margin: 0;
            padding: 0;
            background-color: #fff;
            color: #333;
            scroll-behavior: smooth;
        }

        /* Top Header */
        .top-header {
            background-color: var(--primary-blue);
            color: white;
            padding: 8px 5%;
            font-size: 14px;
                        top: 0;
            z-index: 1000;

        }

        /* Main Header */
        .main-header {
            background-color: var(--accent-yellow);
            color: var(--primary-blue);
            height: 60px;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-link {
            font-weight: 800;
            cursor: pointer;
            transition: all 0.2s;
            font-size: 14px;
        }
        .nav-link:hover {
            opacity: 0.7;
        }

        /* Hero Section */
        .hero {
            height: 90vh;
            background:  
                        url('https://static.wixstatic.com/media/84770f_8536b6095ed5471c8f524ef1193ba91c~mv2.jpg/v1/fill/w_1828,h_1080,al_c,q_90,enc_avif,quality_auto/84770f_8536b6095ed5471c8f524ef1193ba91c~mv2.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            animation: heroZoom 20s infinite alternate;
        }
        @keyframes heroZoom {
            from { background-scale: 1; }
            to { background-scale: 1.1; }
        }

        .hero-title {
            color: var(--primary-blue);
            font-size: clamp(3rem, 10vw, 6rem);
            font-weight: 900;
            margin-bottom: 10px;
            line-height: 1;
        }

        .hero-btn {
            border: 2px solid white;
            color: white;
            background: transparent;
            padding: 12px 35px;
            font-weight: 700;
            transition: all 0.3s ease;
            margin-top: 25px;
        }
        .hero-btn:hover {
            background: white;
            color: var(--primary-blue);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        /* Fixed Background Section */
        .fixed-img-section {
            height: 65vh;
            background-image: url('https://i.pinimg.com/736x/42/d6/99/42d699a449571d4df61352c0b028f231.jpg');
            background-attachment: fixed;
            background-size: cover;
            background-position: center;
        }

        /* 4-Part STEM Section */
        .stem-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }
        .stem-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .stem-card h2 {
            font-size: 2.5rem;
            font-weight: 900;
            margin-bottom: 20px;
        }
        .stem-card img {
            width: 100%;
            height: 500px;
            object-fit: cover;
            border-radius: 4px;
        }

        /* Page Management */
        .page-content { display: none; }
        .page-content.active { display: block; }

        /* General Styling */
        .section-padding { padding: 100px 10%; }
        
        /* Modal */
        #custom-modal {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(17, 31, 162, 0.95);
            z-index: 5000;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .modal-inner {
            background: white;
            padding: 50px;
            max-width: 800px;
            width: 100%;
            max-height: 90vh;
            overflow-y: auto;
            position: relative;
        }

        footer a:hover { color: var(--accent-yellow); text-decoration: underline; }