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

    :root {
        --primary-color: #001a4d;
        --primary-light: #003399;
        --primary-dark: #000d26;
        --accent-color: #0052cc;
        --text-dark: #1a1a1a;
        --text-light: #666666;
        --border-light: #e0e0e0;
        --bg-light: #f8f9fb;
        --white: #ffffff;
        --shadow-sm: 0 2px 8px rgba(0, 26, 77, 0.1);
        --shadow-md: 0 4px 16px rgba(0, 26, 77, 0.15);
        --shadow-lg: 0 8px 32px rgba(0, 26, 77, 0.2);
    }

    html {
        scroll-behavior: smooth;
    }

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

    /* Header & Navigation */
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
        color: var(--white);
        padding: 1rem 2rem;
        z-index: 1000;
        box-shadow: var(--shadow-md);
        transition: all 0.3s ease;
    }

    header.scrolled {
        padding: 0.5rem 1rem;
        background: rgba(0, 26, 77, 0.98);
    }

    nav {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo-space {
        width: 180px;
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--white);
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        border-radius: 8px;
        transition: all 0.3s ease;
    }

    .logo-space:hover {
        background: rgba(255, 255, 255, 0.2);
    }

    header.scrolled .logo-space {
        font-size: 1.2rem;
    }

    .nav-links {
        display: flex;
        gap: 2rem;
        align-items: center;
        list-style: none;
    }

    .nav-links a {
        color: var(--white);
        text-decoration: none;
        font-weight: 500;
        transition: color 0.3s ease;
        position: relative;
    }

    .nav-links a:hover {
        color: #66b3ff;
    }

    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 0;
        height: 2px;
        background: #66b3ff;
        transition: width 0.3s ease;
    }

    .nav-links a:hover::after {
        width: 100%;
    }

    .menu-toggle {
        display: none;
        background: none;
        border: none;
        color: var(--white);
        font-size: 1.5rem;
        cursor: pointer;
    }

    /* Hero Section */
    .hero {
        margin-top: 70px;
        padding: 6rem 2rem;
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
        color: var(--white);
        text-align: center;
        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(0, 82, 204, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 80%, rgba(0, 52, 153, 0.1) 0%, transparent 50%);
        pointer-events: none;
    }

    .hero-content {
        max-width: 900px;
        margin: 0 auto;
        position: relative;
        z-index: 1;
    }

    .hero h1 {
        font-size: 3.5rem;
        font-weight: 700;
        margin-bottom: 1rem;
        line-height: 1.2;
        animation: fadeInUp 0.8s ease;
    }

    .hero .tagline {
        font-size: 1.5rem;
        color: #b3d9ff;
        margin-bottom: 1.5rem;
        font-weight: 500;
        animation: fadeInUp 0.8s ease 0.2s both;
    }

    .hero .description {
        font-size: 1.1rem;
        line-height: 1.8;
        color: #e0e6ff;
        margin-bottom: 2rem;
        animation: fadeInUp 0.8s ease 0.4s both;
    }

    .cta-buttons {
        display: flex;
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
        animation: fadeInUp 0.8s ease 0.6s both;
    }

    .btn {
        padding: 1rem 2.5rem;
        font-size: 1rem;
        font-weight: 600;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.3s ease;
        text-decoration: none;
        display: inline-block;
        text-align: center;
    }

    .btn-primary {
        background: var(--white);
        color: var(--primary-color);
        box-shadow: var(--shadow-md);
    }

    .btn-primary:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-lg);
        background: #f0f0f0;
    }

    .btn-secondary {
        background: transparent;
        color: var(--white);
        border: 2px solid var(--white);
    }

    .btn-secondary:hover {
        background: var(--white);
        color: var(--primary-color);
        transform: translateY(-3px);
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Container */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 2rem;
    }

    /* Section */
    section {
        padding: 5rem 2rem;
    }

    section.light {
        background-color: var(--bg-light);
    }

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

    .section-title h2 {
        font-size: 2.5rem;
        color: var(--primary-color);
        margin-bottom: 1rem;
        position: relative;
        display: inline-block;
    }

    .section-title h2::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 4px;
        background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
        border-radius: 2px;
    }

    .section-title p {
        font-size: 1.1rem;
        color: var(--text-light);
        margin-top: 2rem;
    }

    /* About Section */
    .about-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
        align-items: center;
    }

    .about-text h3 {
        font-size: 1.8rem;
        color: var(--primary-color);
        margin-bottom: 1.5rem;
    }

    .about-text p {
        color: var(--text-light);
        margin-bottom: 1.5rem;
        line-height: 1.8;
        font-size: 1rem;
    }

    .about-highlights {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
        margin-top: 2rem;
    }

    .highlight-item {
        background: var(--white);
        padding: 1.5rem;
        border-radius: 8px;
        border-left: 4px solid var(--accent-color);
        box-shadow: var(--shadow-sm);
        transition: all 0.3s ease;
    }

    .highlight-item:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-md);
    }

    .highlight-item h4 {
        color: var(--primary-color);
        margin-bottom: 0.5rem;
        font-size: 1.1rem;
    }

    .highlight-item p {
        font-size: 0.95rem;
        color: var(--text-light);
        margin: 0;
    }

    /* Services Grid */
    .services-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }

    .service-card {
        background: var(--white);
        padding: 2.5rem 2rem;
        border-radius: 12px;
        box-shadow: var(--shadow-md);
        text-align: center;
        transition: all 0.3s ease;
        border-top: 4px solid var(--accent-color);
        position: relative;
        overflow: hidden;
    }

    .service-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(0, 82, 204, 0.1), transparent);
        transition: left 0.6s ease;
    }

    .service-card:hover::before {
        left: 100%;
    }

    .service-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-lg);
        border-top-color: var(--primary-color);
    }

    .service-icon {
        width: 60px;
        height: 60px;
        background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
        border-radius: 50%;
        margin: 0 auto 1.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--white);
        font-size: 1.8rem;
        position: relative;
        z-index: 1;
    }

    .service-card h3 {
        color: var(--primary-color);
        font-size: 1.3rem;
        margin-bottom: 1rem;
        position: relative;
        z-index: 1;
    }

    .service-card p {
        color: var(--text-light);
        line-height: 1.7;
        position: relative;
        z-index: 1;
    }

    /* Subsidiaries Section */
    .subsidiaries-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2.5rem;
    }

    .subsidiary-card {
        background: var(--white);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--shadow-md);
        transition: all 0.3s ease;
        border: 2px solid transparent;
    }

    .subsidiary-card:hover {
        border-color: var(--accent-color);
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
    }

    .subsidiary-header {
        background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
        color: var(--white);
        padding: 2rem;
        text-align: center;
    }

    .subsidiary-header h3 {
        font-size: 1.4rem;
        margin-bottom: 0.5rem;
    }

    .subsidiary-body {
        padding: 2rem;
    }

    .subsidiary-body p {
        color: var(--text-light);
        line-height: 1.7;
        font-size: 0.95rem;
    }

    /* Stats Section */
    .stats-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 2rem;
        text-align: center;
    }

    .stat-item h4 {
        font-size: 2.5rem;
        color: var(--accent-color);
        margin-bottom: 0.5rem;
    }

    .stat-item p {
        color: var(--text-light);
        font-size: 1rem;
    }

    /* Contact Section */
    .contact-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
        margin-top: 2rem;
    }

    .contact-group {
        background: var(--white);
        padding: 2rem;
        border-radius: 8px;
        box-shadow: var(--shadow-sm);
    }

    .contact-group h3 {
        color: var(--primary-color);
        margin-bottom: 1.5rem;
        font-size: 1.2rem;
        border-bottom: 2px solid var(--accent-color);
        padding-bottom: 1rem;
    }

    .contact-item {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 1rem;
        padding-bottom: 1rem;
        border-bottom: 1px solid var(--border-light);
    }

    .contact-item:last-child {
        border-bottom: none;
        margin-bottom: 0;
        padding-bottom: 0;
    }

    .contact-icon {
        width: 30px;
        height: 30px;
        background: var(--accent-color);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--white);
        flex-shrink: 0;
        font-size: 0.9rem;
    }

    .contact-item a {
        color: var(--accent-color);
        text-decoration: none;
        word-break: break-all;
        transition: color 0.3s ease;
    }

    .contact-item a:hover {
        color: var(--primary-color);
    }

    .contact-label {
        font-weight: 600;
        color: var(--text-dark);
        display: block;
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }

    /* Footer */
    footer {
        background: var(--primary-dark);
        color: var(--white);
        text-align: center;
        padding: 2rem;
        border-top: 3px solid var(--accent-color);
    }

    footer p {
        margin: 0;
        font-size: 0.95rem;
    }

    /* Responsive */
    @media (max-width: 768px) {
        .nav-links {
            gap: 1rem;
            font-size: 0.9rem;
        }

        .hero {
            padding: 4rem 1rem;
            margin-top: 70px;
        }

        .hero h1 {
            font-size: 2.2rem;
        }

        .hero .tagline {
            font-size: 1.2rem;
        }

        .cta-buttons {
            flex-direction: column;
            align-items: center;
        }

        .btn {
            width: 100%;
            max-width: 300px;
        }

        .about-content {
            grid-template-columns: 1fr;
        }

        .about-highlights {
            grid-template-columns: 1fr;
        }

        section {
            padding: 3rem 1rem;
        }

        .section-title h2 {
            font-size: 1.8rem;
        }

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

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

    @media (max-width: 480px) {
        header {
            padding: 1rem;
        }

        nav {
            padding: 0.5rem;
        }

        .logo-space {
            font-size: 1rem;
        }

        .hero h1 {
            font-size: 1.8rem;
        }

        .hero .tagline {
            font-size: 1rem;
        }

        .section-title h2 {
            font-size: 1.5rem;
        }

        .stat-item h4 {
            font-size: 2rem;
        }
    }

    /* Scroll animations */
    .fade-in {
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.6s ease;
    }

    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }