:root {
            --r50ey1-primary: #4285F4;
            --r50ey1-success: #34A853;
            --r50ey1-warning: #FBBC04;
            --r50ey1-danger: #EA4335;
            --r50ey1-text: #202124;
            --r50ey1-text-light: #5f6368;
            --r50ey1-bg: #ffffff;
            --r50ey1-section-bg: #f8f9fa;
            --r50ey1-border: #dadce0;
            --r50ey1-radius: 12px;
            --r50ey1-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
            --r50ey1-container: 1300px;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            color: var(--r50ey1-text);
            background-color: var(--r50ey1-bg);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Navigation */
        .r50ey1-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--r50ey1-border);
            transition: box-shadow 0.3s ease;
        }

        .r50ey1-nav-container {
            max-width: var(--r50ey1-container);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
        }

        .r50ey1-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .r50ey1-logo img {
            height: 32px;
            width: auto;
        }

        .r50ey1-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            min-width: 0;
        }

        .r50ey1-nav-item {
            min-width: 0;
        }

        .r50ey1-nav-link {
            display: block;
            padding: 20px 16px;
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.2s;
            position: relative;
        }

        .r50ey1-nav-link:hover {
            color: var(--r50ey1-primary);
        }

        .r50ey1-nav-link.r50ey1-active {
            color: var(--r50ey1-primary);
        }

        .r50ey1-nav-link.r50ey1-active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--r50ey1-primary);
            border-radius: 3px 3px 0 0;
        }

        /* Hero Section */
        .r50ey1-hero {
            padding: 140px 24px 80px;
            background: radial-gradient(circle at top right, rgba(66, 133, 244, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(52, 168, 83, 0.05), transparent);
            text-align: center;
        }

        .r50ey1-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .r50ey1-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--r50ey1-text);
            line-height: 1.2;
            word-break: keep-all;
        }

        .r50ey1-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--r50ey1-text-light);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Shortcuts Grid Section */
        .r50ey1-section {
            padding: 80px 24px;
            max-width: var(--r50ey1-container);
            margin: 0 auto;
        }

        .r50ey1-section-header {
            margin-bottom: 48px;
            border-left: 5px solid var(--r50ey1-warning);
            padding-left: 20px;
        }

        .r50ey1-section-title {
            font-size: 2rem;
            margin-bottom: 8px;
        }

        .r50ey1-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            width: 100%;
        }

        .r50ey1-card {
            background: var(--r50ey1-bg);
            border: 1px solid var(--r50ey1-border);
            border-radius: var(--r50ey1-radius);
            padding: 32px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .r50ey1-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .r50ey1-card-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--r50ey1-primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .r50ey1-shortcut-list {
            list-style: none;
        }

        .r50ey1-shortcut-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid #f1f3f4;
        }

        .r50ey1-shortcut-item:last-child {
            border-bottom: none;
        }

        .r50ey1-shortcut-label {
            font-size: 14px;
            color: var(--r50ey1-text-light);
            padding-right: 10px;
        }

        .r50ey1-kbd-group {
            display: flex;
            gap: 4px;
            flex-shrink: 0;
        }

        .r50ey1-kbd {
            background: #f1f3f4;
            border: 1px solid #bdc1c6;
            border-radius: 4px;
            padding: 2px 6px;
            font-family: monospace;
            font-size: 12px;
            color: var(--r50ey1-text);
            box-shadow: 0 1px 1px rgba(0,0,0,0.1);
        }

        /* Productivity Ecosystem */
        .r50ey1-eco-section {
            background-color: var(--r50ey1-section-bg);
            padding: 96px 24px;
        }

        .r50ey1-eco-container {
            max-width: var(--r50ey1-container);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .r50ey1-eco-text {
            flex: 1;
            min-width: 300px;
        }

        .r50ey1-eco-visual {
            flex: 1;
            min-width: 300px;
            background: linear-gradient(135deg, var(--r50ey1-primary), var(--r50ey1-success));
            border-radius: 24px;
            aspect-ratio: 16/10;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            padding: 40px;
            position: relative;
            overflow: hidden;
        }

        .r50ey1-eco-visual::after {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            background: repeating-linear-gradient(45deg, rgba(255,255,255,0.05) 0px, rgba(255,255,255,0.05) 1px, transparent 1px, transparent 20px);
        }

        .r50ey1-feature-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(66, 133, 244, 0.1);
            color: var(--r50ey1-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .r50ey1-feature-list {
            margin-top: 24px;
            list-style: none;
        }

        .r50ey1-feature-item {
            margin-bottom: 16px;
            display: flex;
            gap: 12px;
        }

        .r50ey1-feature-dot {
            width: 8px;
            height: 8px;
            background: var(--r50ey1-primary);
            border-radius: 50%;
            margin-top: 8px;
            flex-shrink: 0;
        }

        /* Architectural Logic */
        .r50ey1-tech-stack {
            padding: 80px 24px;
            max-width: var(--r50ey1-container);
            margin: 0 auto;
        }

        .r50ey1-tech-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .r50ey1-tech-item {
            flex: 1;
            min-width: 280px;
            padding: 32px;
            border-radius: var(--r50ey1-radius);
            background: #ffffff;
            border: 1px solid var(--r50ey1-border);
        }

        .r50ey1-tech-impact {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--r50ey1-danger);
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

        /* Footer */
        .r50ey1-footer {
            background: #202124;
            color: #bdc1c6;
            padding: 80px 24px 40px;
            margin-top: 80px;
        }

        .r50ey1-footer-content {
            max-width: var(--r50ey1-container);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            justify-content: space-between;
        }

        .r50ey1-footer-brand {
            max-width: 300px;
            min-width: 0;
        }

        .r50ey1-footer-brand-name {
            font-size: 24px;
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .r50ey1-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            min-width: 0;
        }

        .r50ey1-footer-column {
            min-width: 150px;
        }

        .r50ey1-footer-heading {
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .r50ey1-footer-link-list {
            list-style: none;
        }

        .r50ey1-footer-link-item {
            margin-bottom: 12px;
        }

        .r50ey1-footer-link {
            color: #bdc1c6;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

        .r50ey1-footer-link:hover {
            color: #ffffff;
        }

        .r50ey1-bottom-bar {
            max-width: var(--r50ey1-container);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid #3c4043;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .r50ey1-nav-menu {
                display: none; /* Simplification for creative design */
            }
            .r50ey1-grid {
                grid-template-columns: 1fr;
            }
            .r50ey1-eco-container {
                flex-direction: column;
            }
            .r50ey1-nav-container {
                justify-content: center;
            }
            .r50ey1-hero {
                padding-top: 100px;
            }
        }