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

        html, body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            color: #333;
        }

        .xcw5-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .xcw5-header {
            background: linear-gradient(135deg, #0088cc 0%, #0066aa 100%);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .xcw5-header-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .xcw5-logo-section {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: white;
            font-weight: bold;
            font-size: 20px;
        }

        .xcw5-logo-section img {
            width: 40px;
            height: 40px;
            border-radius: 8px;
        }

        .xcw5-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .xcw5-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .xcw5-nav-link:hover {
            opacity: 0.8;
        }

        .xcw5-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: white;
            transition: width 0.3s ease;
        }

        .xcw5-nav-link:hover::after {
            width: 100%;
        }

        /* Hero Section */
        .xcw5-hero {
            background: linear-gradient(135deg, #0088cc 0%, #00b4d8 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
        }

        .xcw5-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .xcw5-hero-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .xcw5-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.4;
        }

        .xcw5-cta-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .xcw5-btn-primary {
            background: white;
            color: #0088cc;
            padding: 15px 35px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            border: 2px solid white;
            cursor: pointer;
            display: inline-block;
        }

        .xcw5-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }

        .xcw5-btn-secondary {
            background: transparent;
            color: white;
            padding: 15px 35px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            border: 2px solid white;
            cursor: pointer;
            display: inline-block;
        }

        .xcw5-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* Main Content */
        .xcw5-main {
            padding: 60px 20px;
        }

        .xcw5-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }

        .xcw5-feature-card {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 12px;
            transition: all 0.3s ease;
            border-left: 4px solid #0088cc;
        }

        .xcw5-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 136, 204, 0.15);
        }

        .xcw5-feature-icon {
            font-size: 40px;
            margin-bottom: 15px;
            display: inline-block;
        }

        .xcw5-feature-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #0088cc;
        }

        .xcw5-feature-text {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* Download Section */
        .xcw5-download-section {
            background: #f8f9fa;
            padding: 50px 20px;
            border-radius: 12px;
            margin-bottom: 60px;
        }

        .xcw5-download-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 30px;
            color: #333;
            text-align: center;
        }

        .xcw5-download-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .xcw5-download-box {
            background: white;
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .xcw5-download-box:hover {
            box-shadow: 0 15px 35px rgba(0, 136, 204, 0.2);
            transform: translateY(-5px);
        }

        .xcw5-os-icon {
            font-size: 50px;
            margin-bottom: 15px;
        }

        .xcw5-os-name {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #333;
        }

        .xcw5-os-version {
            font-size: 13px;
            color: #999;
            margin-bottom: 20px;
        }

        .xcw5-download-btn {
            background: linear-gradient(135deg, #0088cc 0%, #0066aa 100%);
            color: white;
            padding: 12px 30px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            display: inline-block;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 14px;
        }

        .xcw5-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 136, 204, 0.3);
        }

        /* Compatibility Section */
        .xcw5-compatibility {
            margin-bottom: 60px;
        }

        .xcw5-section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 25px;
            color: #333;
            border-bottom: 3px solid #0088cc;
            padding-bottom: 15px;
        }

        .xcw5-compatibility-list {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 10px;
        }

        .xcw5-compat-item {
            display: flex;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid #e0e0e0;
        }

        .xcw5-compat-item:last-child {
            border-bottom: none;
        }

        .xcw5-compat-icon {
            color: #0088cc;
            font-weight: bold;
            margin-right: 15px;
            font-size: 18px;
        }

        .xcw5-compat-text {
            color: #666;
            font-size: 15px;
        }

        /* Installation Section */
        .xcw5-installation {
            margin-bottom: 60px;
        }

        .xcw5-steps {
            display: grid;
            gap: 20px;
        }

        .xcw5-step {
            background: white;
            border-left: 4px solid #0088cc;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .xcw5-step-number {
            display: inline-block;
            background: #0088cc;
            color: white;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            text-align: center;
            line-height: 35px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .xcw5-step-title {
            font-size: 16px;
            font-weight: 600;
            color: #333;
            margin-bottom: 8px;
        }

        .xcw5-step-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.5;
        }

        /* FAQ Section */
        .xcw5-faq {
            margin-bottom: 60px;
        }

        .xcw5-faq-items {
            display: grid;
            gap: 15px;
        }

        .xcw5-faq-item {
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            overflow: hidden;
        }

        .xcw5-faq-question {
            background: #f8f9fa;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            color: #333;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s ease;
        }

        .xcw5-faq-question:hover {
            background: #e8f4ff;
        }

        .xcw5-faq-toggle {
            color: #0088cc;
            font-size: 20px;
            transition: transform 0.3s ease;
        }

        .xcw5-faq-item.xcw5-active .xcw5-faq-toggle {
            transform: rotate(180deg);
        }

        .xcw5-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background: white;
        }

        .xcw5-faq-item.xcw5-active .xcw5-faq-answer {
            max-height: 500px;
        }

        .xcw5-faq-content {
            padding: 20px;
            color: #666;
            font-size: 14px;
            line-height: 1.6;
        }

        /* CTA Section */
        .xcw5-cta-section {
            background: linear-gradient(135deg, #0088cc 0%, #00b4d8 100%);
            color: white;
            padding: 60px 20px;
            border-radius: 12px;
            text-align: center;
            margin-bottom: 60px;
        }

        .xcw5-cta-heading {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .xcw5-cta-text {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        /* Footer */
        .xcw5-footer {
            background: #2c3e50;
            color: white;
            padding: 40px 20px;
            margin-top: 80px;
        }

        .xcw5-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .xcw5-footer-section-title {
            font-weight: 600;
            margin-bottom: 15px;
            font-size: 15px;
        }

        .xcw5-footer-link {
            color: #bdc3c7;
            text-decoration: none;
            font-size: 13px;
            display: block;
            margin-bottom: 8px;
            transition: color 0.3s ease;
        }

        .xcw5-footer-link:hover {
            color: white;
        }

        .xcw5-footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #95a5a6;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .xcw5-hero-title {
                font-size: 32px;
            }

            .xcw5-hero-subtitle {
                font-size: 16px;
            }

            .xcw5-nav-menu {
                gap: 15px;
                font-size: 12px;
            }

            .xcw5-section-title {
                font-size: 22px;
            }

            .xcw5-download-title {
                font-size: 24px;
            }

            .xcw5-cta-heading {
                font-size: 24px;
            }

            .xcw5-cta-buttons {
                flex-direction: column;
            }

            .xcw5-btn-primary, .xcw5-btn-secondary {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .xcw5-header-wrapper {
                flex-direction: column;
                gap: 15px;
            }

            .xcw5-nav-menu {
                flex-direction: column;
                gap: 10px;
                width: 100%;
            }

            .xcw5-hero {
                padding: 40px 20px;
            }

            .xcw5-hero-title {
                font-size: 24px;
            }

            .xcw5-main {
                padding: 30px 20px;
            }

            .xcw5-features {
                grid-template-columns: 1fr;
            }
        }