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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        .vjh3-header-wrapper {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .vjh3-nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }

        .vjh3-logo-section {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: white;
        }

        .vjh3-logo-img {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            object-fit: cover;
        }

        .vjh3-brand-name {
            font-size: 20px;
            font-weight: 700;
            color: white;
        }

        .vjh3-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .vjh3-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: opacity 0.3s ease;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
        }

        .vjh3-nav-link:hover {
            opacity: 0.8;
            border-bottom-color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 768px) {
            .vjh3-nav-menu {
                display: none;
            }
        }

        .vjh3-hero-section {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
        }

        .vjh3-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .vjh3-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .vjh3-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            font-weight: 300;
        }

        .vjh3-hero-features {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .vjh3-feature-badge {
            background: rgba(255, 255, 255, 0.2);
            padding: 10px 20px;
            border-radius: 20px;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .vjh3-cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .vjh3-btn-primary {
            background-color: #ffffff;
            color: #0088cc;
            padding: 16px 40px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .vjh3-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .vjh3-btn-secondary {
            background-color: transparent;
            color: white;
            padding: 16px 40px;
            border: 2px solid white;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
        }

        .vjh3-btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .vjh3-main-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px;
        }

        .vjh3-section {
            margin-bottom: 60px;
        }

        .vjh3-section-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 30px;
            color: #0088cc;
            border-bottom: 3px solid #0088cc;
            padding-bottom: 15px;
        }

        .vjh3-section-subtitle {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 20px;
            color: #333;
        }

        .vjh3-content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .vjh3-feature-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .vjh3-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
        }

        .vjh3-feature-card-icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .vjh3-feature-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #0088cc;
        }

        .vjh3-feature-card-text {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        .vjh3-compatibility-table {
            width: 100%;
            background: white;
            border-collapse: collapse;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            margin-bottom: 40px;
        }

        .vjh3-compatibility-table thead {
            background-color: #0088cc;
            color: white;
        }

        .vjh3-compatibility-table th {
            padding: 18px;
            text-align: left;
            font-weight: 700;
            font-size: 15px;
        }

        .vjh3-compatibility-table td {
            padding: 16px 18px;
            border-bottom: 1px solid #eee;
            font-size: 14px;
        }

        .vjh3-compatibility-table tbody tr:hover {
            background-color: #f0f7ff;
        }

        .vjh3-status-supported {
            color: #28a745;
            font-weight: 600;
        }

        .vjh3-status-check {
            color: #28a745;
        }

        .vjh3-installation-steps {
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .vjh3-step-item {
            display: flex;
            gap: 25px;
            margin-bottom: 30px;
            align-items: flex-start;
        }

        .vjh3-step-number {
            background-color: #0088cc;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            flex-shrink: 0;
        }

        .vjh3-step-content {
            flex: 1;
        }

        .vjh3-step-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #333;
        }

        .vjh3-step-description {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        .vjh3-advantages-list {
            list-style: none;
            margin-bottom: 30px;
        }

        .vjh3-advantages-item {
            padding: 15px 0;
            padding-left: 35px;
            position: relative;
            font-size: 15px;
            color: #333;
            line-height: 1.8;
        }

        .vjh3-advantages-item:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #0088cc;
            font-weight: 700;
            font-size: 20px;
        }

        .vjh3-security-highlight {
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f3ff 100%);
            padding: 30px;
            border-left: 4px solid #0088cc;
            border-radius: 8px;
            margin-bottom: 30px;
        }

        .vjh3-security-title {
            font-size: 18px;
            font-weight: 700;
            color: #0088cc;
            margin-bottom: 12px;
        }

        .vjh3-security-text {
            font-size: 14px;
            color: #333;
            line-height: 1.8;
        }

        .vjh3-faq-section {
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .vjh3-faq-item {
            margin-bottom: 20px;
            border-bottom: 1px solid #eee;
            padding-bottom: 20px;
        }

        .vjh3-faq-item:last-child {
            border-bottom: none;
        }

        .vjh3-faq-question {
            font-size: 16px;
            font-weight: 700;
            color: #0088cc;
            margin-bottom: 10px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .vjh3-faq-answer {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        .vjh3-cta-section {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            border-radius: 12px;
            margin-bottom: 60px;
        }

        .vjh3-cta-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .vjh3-cta-text {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        .vjh3-footer {
            background-color: #1a1a1a;
            color: white;
            padding: 40px 20px;
            text-align: center;
        }

        .vjh3-footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .vjh3-footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .vjh3-footer-link {
            color: #bbb;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .vjh3-footer-link:hover {
            color: white;
        }

        .vjh3-footer-copyright {
            font-size: 13px;
            color: #888;
            border-top: 1px solid #333;
            padding-top: 20px;
            margin-top: 20px;
        }

        @media (max-width: 768px) {
            .vjh3-hero-title {
                font-size: 32px;
            }

            .vjh3-hero-subtitle {
                font-size: 16px;
            }

            .vjh3-section-title {
                font-size: 28px;
            }

            .vjh3-cta-buttons {
                flex-direction: column;
            }

            .vjh3-btn-primary,
            .vjh3-btn-secondary {
                width: 100%;
            }

            .vjh3-main-content {
                padding: 40px 15px;
            }

            .vjh3-installation-steps {
                padding: 30px 20px;
            }

            .vjh3-step-item {
                gap: 15px;
            }

            .vjh3-footer-links {
                gap: 15px;
            }
        }

        .vjh3-highlight-text {
            color: #0088cc;
            font-weight: 600;
        }

        .vjh3-content-paragraph {
            font-size: 15px;
            color: #333;
            line-height: 1.9;
            margin-bottom: 15px;
        }