:root {
            --px5cu-primary: #bf0000;
            --px5cu-primary-hover: #a00000;
            --px5cu-dark: #1a1a1a;
            --px5cu-light: #ffffff;
            --px5cu-gray-100: #f8f9fa;
            --px5cu-gray-200: #e9ecef;
            --px5cu-gray-800: #343a40;
            --px5cu-text: #2d3436;
            --px5cu-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --px5cu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --px5cu-container-width: 1100px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
        }

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

        h1, h2, h3, h4 {
            line-height: 1.3;
            color: var(--px5cu-dark);
            word-break: keep-all;
            white-space: normal;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--px5cu-transition);
        }

        /* Layout Utilities */
        .px5cu-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .px5cu-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .px5cu-flex-center {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
        }

        .px5cu-grid {
            display: grid;
            gap: 24px;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        }

        /* Navigation */
        .px5cu-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--px5cu-gray-200);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .px5cu-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
        }

        .px5cu-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

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

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

        .px5cu-menu-item a {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            border-radius: 6px;
            color: var(--px5cu-gray-800);
        }

        .px5cu-menu-item a:hover {
            background: var(--px5cu-gray-100);
            color: var(--px5cu-primary);
        }

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

        /* Hero Section - Unique Diagonal Design */
        .px5cu-hero {
            padding: 96px 0;
            background: linear-gradient(135deg, #fdfdfd 0%, #f5f5f5 100%);
            position: relative;
            overflow: hidden;
        }

        .px5cu-hero::after {
            content: '';
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: var(--px5cu-primary);
            opacity: 0.03;
            border-radius: 50%;
        }

        .px5cu-hero-content {
            max-width: 800px;
            text-align: center;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .px5cu-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .px5cu-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--px5cu-gray-800);
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Download Archive Table */
        .px5cu-archive-section {
            padding: 64px 0;
        }

        .px5cu-archive-card {
            background: white;
            border-radius: 16px;
            border: 1px solid var(--px5cu-gray-200);
            overflow: hidden;
            box-shadow: var(--px5cu-shadow);
        }

        .px5cu-table-header {
            background: var(--px5cu-dark);
            color: white;
            padding: 20px 24px;
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr 1fr;
            font-weight: 600;
        }

        .px5cu-table-row {
            padding: 20px 24px;
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr 1fr;
            border-bottom: 1px solid var(--px5cu-gray-100);
            align-items: center;
        }

        .px5cu-table-row:hover {
            background: var(--px5cu-gray-100);
        }

        .px5cu-btn-download {
            background: var(--px5cu-primary);
            color: white;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 13px;
            text-align: center;
            font-weight: 600;
        }

        .px5cu-btn-download:hover {
            background: var(--px5cu-primary-hover);
            transform: translateY(-2px);
        }

        /* Workflow Orchestration Section */
        .px5cu-workflow {
            padding: 80px 0;
            background-color: var(--px5cu-gray-100);
        }

        .px5cu-section-title {
            text-align: center;
            margin-bottom: 48px;
            font-size: 2rem;
        }

        .px5cu-card {
            background: white;
            padding: 32px;
            border-radius: 16px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: var(--px5cu-transition);
            min-width: 0;
        }

        .px5cu-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .px5cu-card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(191, 0, 0, 0.1);
            color: var(--px5cu-primary);
            font-size: 12px;
            font-weight: 700;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .px5cu-card h3 {
            margin-bottom: 16px;
            font-size: 1.25rem;
        }

        .px5cu-card p {
            font-size: 14px;
            color: var(--px5cu-gray-800);
            margin-bottom: 12px;
        }

        .px5cu-efficiency {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #2ecc71;
            font-weight: 700;
            font-size: 14px;
        }

        /* Footer */
        .px5cu-footer {
            background: var(--px5cu-dark);
            color: rgba(255,255,255,0.7);
            padding: 64px 0 32px;
        }

        .px5cu-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .px5cu-footer-brand h2 {
            color: white;
            margin-bottom: 16px;
            font-size: 1.5rem;
        }

        .px5cu-footer-links h4 {
            color: white;
            margin-bottom: 24px;
            font-size: 1rem;
        }

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

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

        .px5cu-footer-links a:hover {
            color: var(--px5cu-primary);
            padding-left: 5px;
        }

        .px5cu-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 32px;
            text-align: center;
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .px5cu-menu {
                display: none; /* In a real project, add a hamburger menu */
            }
            .px5cu-table-header, .px5cu-table-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .px5cu-table-header div:nth-child(3), .px5cu-table-header div:nth-child(4),
            .px5cu-table-row div:nth-child(3), .px5cu-table-row div:nth-child(4) {
                display: none;
            }
            .px5cu-footer-grid {
                grid-template-columns: 1fr;
            }
            .px5cu-hero {
                padding: 64px 0;
            }
        }