:root {
            --px5cu-primary: #bf0000;
            --px5cu-primary-dark: #8e0000;
            --px5cu-secondary: #2c3e50;
            --px5cu-bg-light: #f8f9fa;
            --px5cu-text-main: #2d3436;
            --px5cu-text-muted: #636e72;
            --px5cu-white: #ffffff;
            --px5cu-glass: rgba(255, 255, 255, 0.9);
            --px5cu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --px5cu-radius: 16px;
            --px5cu-container-width: 1320px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--px5cu-text-main);
            background-color: var(--px5cu-bg-light);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            word-break: normal;
            white-space: normal;
            color: var(--px5cu-secondary);
        }

        .px5cu-fluid-h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); font-weight: 800; }
        .px5cu-fluid-h2 { font-size: clamp(1.8rem, 3vw + 0.5rem, 2.8rem); font-weight: 700; }
        .px5cu-fluid-p { font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem); }

        /* Navigation */
        .px5cu-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--px5cu-glass);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 16px 0;
        }

        .px5cu-nav-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .px5cu-logo {
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .px5cu-logo img {
            height: 40px;
            width: auto;
        }

        .px5cu-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .px5cu-menu-item a {
            text-decoration: none;
            color: var(--px5cu-text-main);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .px5cu-menu-item a:hover {
            color: var(--px5cu-primary);
            background: rgba(191, 0, 0, 0.05);
        }

        .px5cu-menu-item a.active {
            color: var(--px5cu-white);
            background: var(--px5cu-primary);
        }

        /* Hero Section - Unique Central Layout */
        .px5cu-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at top right, rgba(191, 0, 0, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(44, 62, 80, 0.05), transparent);
            text-align: center;
        }

        .px5cu-hero-card {
            max-width: 900px;
            margin: 0 auto;
            background: var(--px5cu-white);
            padding: 64px 32px;
            border-radius: 32px;
            box-shadow: var(--px5cu-shadow);
            border: 1px solid rgba(0,0,0,0.03);
            min-width: 0;
        }

        .px5cu-hero-tag {
            display: inline-block;
            background: rgba(191, 0, 0, 0.1);
            color: var(--px5cu-primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 700;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .px5cu-hero-subtitle {
            margin: 24px auto 40px;
            color: var(--px5cu-text-muted);
            max-width: 700px;
            line-height: 1.8;
        }

        /* Download Controls */
        .px5cu-download-box {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-top: 32px;
        }

        .px5cu-btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 32px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            min-width: 200px;
            justify-content: center;
        }

        .px5cu-btn-primary {
            background: var(--px5cu-primary);
            color: var(--px5cu-white);
            box-shadow: 0 4px 15px rgba(191, 0, 0, 0.3);
        }

        .px5cu-btn-primary:hover {
            background: var(--px5cu-primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(191, 0, 0, 0.4);
        }

        .px5cu-btn-outline {
            background: transparent;
            border: 2px solid var(--px5cu-secondary);
            color: var(--px5cu-secondary);
        }

        .px5cu-btn-outline:hover {
            background: var(--px5cu-secondary);
            color: var(--px5cu-white);
            transform: translateY(-3px);
        }

        /* Feature Section - Enterprise Workflow */
        .px5cu-section {
            padding: 96px 24px;
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
        }

        .px5cu-section-header {
            margin-bottom: 64px;
            text-align: center;
        }

        .px5cu-workflow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 32px;
            min-width: 0;
        }

        .px5cu-workflow-card {
            background: var(--px5cu-white);
            border-radius: var(--px5cu-radius);
            padding: 40px;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .px5cu-workflow-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--px5cu-shadow);
        }

        .px5cu-workflow-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--px5cu-primary);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .px5cu-workflow-card:hover::before {
            opacity: 1;
        }

        .px5cu-scenario {
            font-size: 0.85rem;
            color: var(--px5cu-primary);
            font-weight: 700;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .px5cu-usecase {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--px5cu-secondary);
        }

        .px5cu-feature-badge {
            display: inline-block;
            background: var(--px5cu-bg-light);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.9rem;
            margin-bottom: 24px;
            color: var(--px5cu-text-muted);
        }

        .px5cu-efficiency {
            margin-top: auto;
            padding-top: 24px;
            border-top: 1px dashed rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            color: #27ae60;
            font-weight: 700;
        }

        /* Comparison Section */
        .px5cu-comparison-section {
            background: var(--px5cu-secondary);
            color: var(--px5cu-white);
            padding: 96px 24px;
            border-radius: 48px;
            margin: 48px 24px;
        }

        .px5cu-comparison-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
        }

        .px5cu-comparison-item {
            flex: 1;
            min-width: 280px;
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .px5cu-comparison-item h3 {
            color: var(--px5cu-white);
            margin-bottom: 16px;
        }

        /* Footer */
        .px5cu-footer {
            background: var(--px5cu-white);
            padding: 80px 24px 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .px5cu-footer-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .px5cu-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .px5cu-brand-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--px5cu-primary);
            margin-bottom: 16px;
        }

        .px5cu-footer-links {
            flex: 2;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 32px;
            min-width: 0;
        }

        .px5cu-footer-column h4 {
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .px5cu-footer-column ul {
            list-style: none;
        }

        .px5cu-footer-column li {
            margin-bottom: 12px;
        }

        .px5cu-footer-column a {
            text-decoration: none;
            color: var(--px5cu-text-muted);
            transition: color 0.3s;
        }

        .px5cu-footer-column a:hover {
            color: var(--px5cu-primary);
        }

        .px5cu-copyright {
            width: 100%;
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            color: var(--px5cu-text-muted);
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .px5cu-menu {
                display: none; /* In a real project, add a mobile burger menu */
            }
            .px5cu-workflow-grid {
                grid-template-columns: 1fr;
            }
            .px5cu-hero-card {
                padding: 40px 20px;
            }
            .px5cu-comparison-section {
                margin: 24px 12px;
                border-radius: 24px;
            }
        }