/* CSS Reset & Base Styles */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        :root {
            --primary-color: #050F26;
            --primary-dark: #030a1a;
            --primary-light: #0a1840;
            --accent-color: #1e40af;
            --accent-hover: #172554;
            --text-dark: #333;
            --text-light: #595959;
            --bg-light: #f8fafc;
            --white: #ffffff;
            --border-color: #e2e8f0;
            --focus-color: #1e40af;
            --success-color: #10b981;
            --transition: all 0.3s ease;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Open Sans', sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background: var(--white);
        }

        /* Skip to Main Content Link */
        .skip-link {
            position: absolute;
            top: -100px;
            left: 0;
            background: var(--primary-color);
            color: var(--white);
            padding: 12px 24px;
            text-decoration: none;
            z-index: 10000;
            border-radius: 0 0 8px 0;
            font-weight: 600;
            font-size: 1rem;
        }

        .skip-link:focus {
            top: 0;
            outline: 3px solid var(--white);
            outline-offset: 2px;
        }

        /* Container System */
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header - Logo Section */
        .header-logo {
            background: var(--white);
            padding: 20px 0;
            border-bottom: 3px solid var(--primary-color);
        }

        .logo-container {
            text-align: center;
        }

        .logo {
            max-height: 200px;
            width: auto;
        }

        /* Navigation */
        .nav-wrapper {
            background: var(--primary-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .nav-container {
            position: relative;
        }

        .main-nav {
            display: flex;
            justify-content: center;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav > li {
            position: relative;
        }

        .main-nav > li > a {
            display: block;
            padding: 18px 24px;
            color: var(--white);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
        }

        .main-nav > li > a:hover,
        .main-nav > li > a:focus {
            background: var(--primary-light);
        }

        .main-nav > li > a i {
            margin-left: 5px;
            font-size: 0.8rem;
        }

        /* Dropdown Menu */
        .dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--white);
            min-width: 280px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-15px);
            transition: var(--transition);
            list-style: none;
            margin: 0;
            padding: 0;
            border-top: 3px solid var(--accent-color);
            z-index: 100;
        }

        .main-nav > li:hover .dropdown,
        .main-nav > li:focus-within .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown li {
            border-bottom: 1px solid var(--border-color);
        }

        .dropdown li:last-child {
            border-bottom: none;
        }

        .dropdown li a {
            display: block;
            padding: 14px 20px;
            color: var(--text-dark);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 600;
        }

        .dropdown li a:hover,
        .dropdown li a:focus {
            background: var(--bg-light);
            color: var(--accent-color);
            padding-left: 25px;
        }

        /* Mobile Menu Toggle */
        .mobile-menu-toggle {
            display: none;
            background: var(--accent-color);
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            padding: 12px 16px;
            cursor: pointer;
            border-radius: 8px;
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(0,0,0,0.2);
        }

        .mobile-menu-toggle:hover,
        .mobile-menu-toggle:focus {
            background: var(--accent-hover);
            outline: 3px solid var(--focus-color);
            outline-offset: 2px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }

        .mobile-menu-close {
            display: none;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1e3a8a 100%);
            padding: 80px 0;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.3) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text h1 {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        .hero-text p {
            font-size: 1.25rem;
            margin-bottom: 2rem;
            opacity: 1;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 14px 28px;
            background: var(--accent-color);
            color: var(--white);
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
            font-size: 1rem;
            border: 2px solid transparent;
        }

        .btn:hover,
        .btn:focus {
            background: #172554;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 64, 175, 0.4);
        }

        .btn-secondary {
            background: var(--white);
            border-color: var(--white);
            color: var(--primary-color);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: var(--primary-color);
            color: var(--white);
            border-color: var(--white);
        }

        .hero-image-wrapper {
            position: relative;
            width: 100%;
            padding-bottom: 75%;
            overflow: hidden;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        .hero-image-wrapper img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* News Section */
        .news-section {
            padding: 80px 0;
            background: var(--white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            font-weight: 700;
        }

        .section-header p {
            font-size: 1.2rem;
            color: var(--primary-color);
        }

        .news-grid {
            display: grid;
            gap: 30px;
            margin-bottom: 50px;
        }

        .news-item {
            background: var(--white);
            padding: 35px;
            border-radius: 16px;
            border-left: 5px solid var(--accent-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
            text-decoration: none;
            color: inherit;
            display: block;
        }

        .news-item:hover,
        .news-item:focus {
            transform: translateX(5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }

        .news-item-content {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 30px;
            align-items: center;
        }

        .news-content h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        .news-meta {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 10px;
            font-weight: 600;
        }

        .news-excerpt {
            color: var(--text-dark);
            font-style: italic;
            line-height: 1.6;
        }

        .news-read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 14px 28px;
            background: var(--accent-color);
            color: var(--white);
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            pointer-events: none;
        }

        /* Services Section */
        .services-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            border: 2px solid var(--border-color);
            border-radius: 16px;
            padding: 35px 25px;
            text-align: center;
            transition: var(--transition);
            text-decoration: none;
            color: var(--text-dark);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .service-card:hover,
        .service-card:focus {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border-color: var(--primary-color);
        }

        .service-icon {
            width: 90px;
            height: 90px;
            background: var(--primary-color);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: var(--white);
            margin-bottom: 1.5rem;
            transition: var(--transition);
        }

        .service-card:hover .service-icon,
        .service-card:focus .service-icon {
            transform: none;
        }

        .service-card h3 {
            font-size: 1.25rem;
            color: var(--primary-color);
            margin: 0;
            font-weight: 700;
        }

        .services-cta {
            text-align: center;
            margin-top: 50px;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            align-items: center;
        }

        /* Videos Section */
        .videos-section {
            padding: 80px 0;
            background: var(--white);
        }

        .video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 35px;
        }

        .video-wrapper {
            position: relative;
            padding-bottom: 56.25%;
            height: 0;
            overflow: hidden;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.1);
            transition: var(--transition);
        }

        .video-wrapper:hover,
        .video-wrapper:focus-within {
            transform: translateY(-5px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.15);
        }

        .video-wrapper iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: var(--white);
            padding: 60px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer h3 {
            color: var(--white);
            font-size: 1.3rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer p,
        .footer a,
        .footer address {
            color: rgba(255,255,255,0.85);
            line-height: 1.8;
            font-style: normal;
        }

        .footer a {
            text-decoration: none;
            transition: var(--transition);
        }

        .footer a:hover,
        .footer a:focus {
            color: var(--white);
            text-decoration: underline;
        }

        .footer nav p {
            margin: 0;
        }

        .footer nav a {
            display: inline-block;
            padding: 4px 0;
        }

        .accessibility-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            margin-top: 1.5rem;
            padding: 12px 20px;
            background: rgba(255,255,255,0.1);
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
            color: var(--white);
        }

        .accessibility-link:hover,
        .accessibility-link:focus {
            background: rgba(255,255,255,0.2);
            transform: translateX(5px);
            text-decoration: none;
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-links a {
            font-size: 2rem;
            color: var(--white);
            transition: var(--transition);
        }

        .social-links a:hover,
        .social-links a:focus {
            color: #fbbf24;
            transform: scale(1.2);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.2);
            padding-top: 30px;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }

        /* Utility Classes */
        .text-center {
            text-align: center;
        }

        /* Focus Visible */
        *:focus-visible {
            outline: 3px solid var(--focus-color);
            outline-offset: 2px;
        }

        /* Responsive Breakpoints */
        
        /* Medium: 768px to 1023px */
        @media screen and (max-width: 1023px) {
            .hero-text h1 {
                font-size: 2.5rem;
            }

            .main-nav > li > a {
                padding: 18px 18px;
                font-size: 0.95rem;
            }

            .services-grid {
                grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            }
        }

        /* Tablet and Mobile: 768px and below */
        @media screen and (max-width: 767px) {
            .logo {
                max-height: 160px;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-wrapper {
                position: relative;
            }

            .main-nav {
                position: fixed;
                top: 0;
                left: -100%;
                width: 85%;
                max-width: 350px;
                height: 100vh;
                background: var(--primary-dark);
                flex-direction: column;
                align-items: stretch;
                padding: 80px 0 40px;
                overflow-y: auto;
                transition: left 0.3s ease;
                box-shadow: 4px 0 20px rgba(0,0,0,0.3);
                z-index: 2000;
                justify-content: flex-start;
            }

            .main-nav.active {
                left: 0;
            }

            .main-nav > li {
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }

            .main-nav > li > a {
                padding: 18px 25px;
                display: flex;
                justify-content: space-between;
                align-items: center;
            }

            .main-nav > li > a:hover,
            .main-nav > li > a:focus {
                background: rgba(255,255,255,0.1);
            }

            .dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                background: rgba(0,0,0,0.3);
                display: none;
                border-top: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }

            .main-nav > li.dropdown-open .dropdown {
                display: block;
                max-height: 500px;
            }

            .dropdown li {
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }

            .dropdown li a {
                padding: 14px 25px 14px 45px;
                color: rgba(255,255,255,0.9);
            }

            .dropdown li a:hover,
            .dropdown li a:focus {
                background: rgba(255,255,255,0.1);
                color: var(--white);
                padding-left: 50px;
            }

            .mobile-menu-close {
                position: absolute;
                top: 20px;
                right: 20px;
                background: rgba(255,255,255,0.1);
                border: 2px solid rgba(255,255,255,0.3);
                color: var(--white);
                font-size: 2rem;
                cursor: pointer;
                padding: 10px;
                z-index: 2001;
                border-radius: 8px;
                line-height: 1;
                width: 50px;
                height: 50px;
                display: none;
                align-items: center;
                justify-content: center;
            }

            .main-nav.active .mobile-menu-close {
                display: flex;
            }

            .mobile-menu-close:hover,
            .mobile-menu-close:focus {
                background: rgba(255,255,255,0.2);
                border-color: rgba(255,255,255,0.5);
            }

            .hero {
                padding: 60px 0;
            }

            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-text {
                text-align: center;
            }

            .hero-text h1 {
                font-size: 2rem;
            }

            .hero-buttons {
                justify-content: center;
            }

            .hero-image-wrapper {
                max-width: 450px;
                margin: 0 auto;
            }

            .section-header h2 {
                font-size: 2rem;
            }

            .services-section,
            .news-section,
            .videos-section {
                padding: 60px 0;
            }

            .news-item-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .video-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* Small: 640px and below */
        @media screen and (max-width: 639px) {
            .container {
                padding: 0 15px;
            }

            .logo {
                max-height: 160px;
            }

            .hero-text h1 {
                font-size: 1.75rem;
            }

            .hero-text p {
                font-size: 1.1rem;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .service-card {
                padding: 30px 20px;
            }
        }