:root {
            --blue-900: #0c4a6e;
            --blue-800: #1e40af;
            --blue-700: #1d4ed8;
            --blue-600: #2563eb;
            --blue-500: #3b82f6;
            --blue-50: #eff6ff;
            --white: #ffffff;
            --gray-800: #1f2937;
            --gray-700: #374151;
            --gray-600: #4b5563;
            --gray-500: #6b7280;
            --gray-50: #f9fafb;
            --yellow-400: #fbbf24;
            --orange-500: #f97316;
            --red-400: #f87171;
            --pink-500: #ec4899;
            --green-400: #4ade80;
            --emerald-500: #10b981;
            --gray-400: #9ca3af;
            --slate-600: #475569;
            --indigo-400: #818cf8;
            --purple-500: #a855f7;
            --cyan-500: #06b6d4;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--white);
            color: var(--gray-800);
            line-height: 1.6;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header */
        header {
            background-color: var(--blue-900);
            color: var(--white);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        .header-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            padding: 2rem 0;
            gap: 1rem;
        }

        @media (min-width: 768px) {
            .header-content {
                flex-direction: row;
                gap: 0;
            }
        }

        .logo-container {
            display: flex;
            align-items: center;
            margin-right: 1rem;
        }

        .logo-img {
            max-height: 5rem;
            width: auto;
            object-fit: contain;
            padding: 0.02rem;
        }

        nav {
            display: flex;
            gap: 1.5rem;
        }

        nav a {
            color: var(--white);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        nav a:hover {
            color: #93c5fd;
        }

        /* Hero Section */
        .hero {
            padding: 4rem 0;
            background: linear-gradient(to right, var(--blue-50), var(--white));
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2.5rem;
        }

        @media (min-width: 768px) {
            .hero-content {
                flex-direction: row;
                align-items: flex-start;
                gap: 0;
            }
        }

        .hero-text {
            flex: 1;
            margin-bottom: 2.5rem;
        }

        @media (min-width: 768px) {
            .hero-text {
                margin-right: 2.5rem;
                margin-bottom: 0;
            }
        }

        .hero-image {
            flex: 1;
            background-color: var(--white);
            padding: 1.5rem;
            border-radius: 0.75rem;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .hero-image img {
            width: 100%;
            height: 20rem;
            object-fit: cover;
            border-radius: 0.5rem;
            display: block;
        }

        h1 {
            font-size: 2.25rem;
            font-weight: bold;
            color: var(--blue-900);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        @media (min-width: 768px) {
            h1 {
                font-size: 3rem;
            }
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--gray-700);
            margin-bottom: 2rem;
            max-width: 600px;
        }

        .btn {
            background-color: var(--blue-600);
            color: var(--white);
            font-weight: bold;
            padding: 0.75rem 1.5rem;
            border-radius: 0.5rem;
            text-decoration: none;
            display: inline-block;
            transition: background-color 0.2s ease;
        }

        .btn:hover {
            background-color: var(--blue-700);
        }

        /* About Section */
        .about {
            padding: 4rem 0;
            background-color: var(--white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header h2 {
            font-size: 2.25rem;
            font-weight: bold;
            color: var(--blue-900);
            margin-bottom: 1rem;
        }

        @media (min-width: 768px) {
            .section-header h2 {
                font-size: 3rem;
            }
        }

        .divider {
            width: 5rem;
            height: 0.25rem;
            background-color: var(--blue-600);
            margin: 0 auto 1.5rem;
        }

        .section-header p {
            font-size: 1.25rem;
            color: var(--gray-700);
            max-width: 48rem;
            margin: 0 auto;
        }

        .features {
            display: grid;
            gap: 2rem;
        }

        @media (min-width: 768px) {
            .features {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .feature-card {
            background-color: var(--blue-50);
            padding: 1.5rem;
            border-radius: 0.75rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            transform: translateY(0);
        }

        .feature-card:hover {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            transform: translateY(-0.5rem) scale(1.02);
        }

        .icon-container {
            width: 3rem;
            height: 3rem;
            background-color: var(--blue-600);
            border-radius: 9999px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            transition: background-color 0.2s ease;
        }

        .feature-card:hover .icon-container {
            background-color: var(--blue-700);
        }

        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: bold;
            color: var(--blue-900);
            margin-bottom: 0.75rem;
            transition: color 0.2s ease;
        }

        .feature-card:hover h3 {
            color: var(--blue-800);
        }

        .feature-card p {
            color: var(--gray-700);
            transition: color 0.2s ease;
        }

        .feature-card:hover p {
            color: var(--gray-800);
        }

        /* Industries Section */
        .industries {
            padding: 5rem 0;
            background: linear-gradient(to bottom right, var(--blue-900), var(--blue-800), var(--blue-900));
            color: var(--white);
        }

        .industries .section-header {
            margin-bottom: 4rem;
        }

        .industries .section-header h2 {
            color: var(--white);
            font-size: 2.5rem;
        }

        @media (min-width: 768px) {
            .industries .section-header h2 {
                font-size: 3.75rem;
            }
        }

        .industries .divider {
            background-color: #93c5fd;
        }

        .industries .section-header p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.25rem;
        }

        .industry-grid {
            display: grid;
            gap: 2rem;
        }

        @media (min-width: 768px) {
            .industry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .industry-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .industry-card {
            background-color: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(4px);
            padding: 1.5rem;
            border-radius: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
            transform: translateY(0);
        }

        .industry-card:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-0.5rem);
        }

        .industry-image {
            width: 100%;
            height: 12rem;
            border-radius: 0.75rem;
            overflow: hidden;
            margin-bottom: 1.5rem;
            position: relative;
        }

        .industry-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .industry-overlay {
            position: absolute;
            inset: 0;
            opacity: 0.6;
        }

        .industry-title {
            position: absolute;
            bottom: 1rem;
            left: 1rem;
            right: 1rem;
            font-size: 1.25rem;
            font-weight: bold;
            color: var(--white);
        }

        .industry-icon {
            width: 3rem;
            height: 3rem;
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .industry-card p {
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.6;
        }

        /* Contact Section */
        .contact {
            padding: 4rem 0;
            background-color: var(--gray-50);
        }

        .contact-card {
            max-width: 64rem;
            background-color: var(--white);
            padding: 3rem;
            border-radius: 0.75rem;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            margin: 0 auto;
            text-align: center;
        }

        .contact-card h2 {
            font-size: 2.25rem;
            font-weight: bold;
            color: var(--blue-900);
            margin-bottom: 1.5rem;
        }

        .contact-info {
            background-color: var(--blue-50);
            padding: 2rem;
            border-radius: 0.75rem;
            border: 2px solid #bfdbfe;
            margin-top: 2rem;
        }

        .contact-info p:first-child {
            font-size: 1.25rem;
            color: var(--gray-800);
            margin-bottom: 1rem;
        }

        .email-link {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--blue-700);
            text-decoration: underline;
            transition: color 0.2s ease;
        }

        .email-link:hover {
            color: var(--blue-800);
        }

        .contact-info p:last-child {
            color: var(--gray-600);
            margin-top: 1rem;
        }

        /* Footer */
        footer {
            background-color: var(--blue-900);
            color: var(--white);
            padding: 2rem 0;
            text-align: center;
        }

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

        .mb-4 {
            margin-bottom: 1rem;
        }

        .mb-6 {
            margin-bottom: 1.5rem;
        }

        .mb-8 {
            margin-bottom: 2rem;
        }

        .opacity-90 {
            opacity: 0.9;
        }

        /* Energy gradient */
        .energy-gradient {
            background: linear-gradient(to top, var(--yellow-400), var(--orange-500));
        }

        /* Health gradient */
        .health-gradient {
            background: linear-gradient(to top, var(--red-400), var(--pink-500));
        }

        /* Agriculture gradient */
        .agriculture-gradient {
            background: linear-gradient(to top, var(--green-400), var(--emerald-500));
        }

        /* Security gradient */
        .security-gradient {
            background: linear-gradient(to top, var(--gray-400), var(--slate-600));
        }

        /* Minerals gradient */
        .minerals-gradient {
            background: linear-gradient(to top, var(--indigo-400), var(--purple-500));
        }

        /* Fuel gradient */
        .fuel-gradient {
            background: linear-gradient(to top, var(--blue-500), var(--cyan-500));
        }

        /* Image loading */
        .image-placeholder {
            background-color: #e5e7eb;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #6b7280;
            font-size: 0.875rem;
        }