:root {
            --r50ey1-primary: #4285F4;
            --r50ey1-accent: #FBBC04;
            --r50ey1-error: #EA4335;
            --r50ey1-success: #34A853;
            --r50ey1-bg: #ffffff;
            --r50ey1-text: #202124;
            --r50ey1-text-light: #5f6368;
            --r50ey1-glass: rgba(255, 255, 255, 0.85);
            --r50ey1-shadow: 0 4px 24px rgba(0,0,0,0.08);
            --r50ey1-container-width: 1320px;
        }

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

        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;
        }

        /* Layout Utilities */
        .r50ey1-container {
            max-width: var(--r50ey1-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .r50ey1-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .r50ey1-flex > * {
            min-width: 0;
        }

        /* Navigation */
        .r50ey1-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--r50ey1-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .r50ey1-nav {
            height: 72px;
            align-items: center;
            justify-content: space-between;
        }

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

        .r50ey1-logo img {
            height: 36px;
            width: auto;
        }

        .r50ey1-menu {
            list-style: none;
            gap: 8px;
        }

        .r50ey1-menu li a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.2s ease;
            font-size: 0.95rem;
        }

        .r50ey1-menu li a:hover {
            color: var(--r50ey1-primary);
            background: rgba(66, 133, 244, 0.05);
        }

        .r50ey1-menu li a.active {
            color: var(--r50ey1-primary);
            background: rgba(66, 133, 244, 0.1);
        }

        /* Hero Section */
        .r50ey1-hero {
            padding: 180px 0 100px;
            background: radial-gradient(circle at 90% 10%, rgba(251, 188, 4, 0.08), transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(66, 133, 244, 0.08), transparent 40%);
            text-align: center;
            position: relative;
        }

        .r50ey1-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(251, 188, 4, 0.1);
            color: #b08400;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .r50ey1-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 32px;
            color: var(--r50ey1-text);
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
        }

        .r50ey1-hero p {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--r50ey1-text-light);
            max-width: 700px;
            margin: 0 auto 48px;
        }

        /* Feature Card Section */
        .r50ey1-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .r50ey1-section-title h2 {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
        }

        .r50ey1-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 64px;
        }

        .r50ey1-card {
            background: #fff;
            padding: 48px;
            border-radius: 24px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .r50ey1-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.06);
        }

        .r50ey1-card-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            background: #f8f9fa;
        }

        .r50ey1-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .r50ey1-card p {
            color: var(--r50ey1-text-light);
            flex-grow: 1;
        }

        /* Technical Depth Section */
        .r50ey1-tech-stack {
            padding: 100px 0;
            background: #f8f9fa;
            border-radius: 48px;
            margin: 64px 24px;
        }

        .r50ey1-tech-item {
            padding: 40px;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            align-items: center;
        }

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

        .r50ey1-tech-info {
            flex: 1;
            padding-right: 48px;
        }

        .r50ey1-tech-tag {
            font-size: 0.8rem;
            font-weight: bold;
            color: var(--r50ey1-primary);
            margin-bottom: 8px;
            display: block;
        }

        .r50ey1-tech-visual {
            width: 400px;
            height: 240px;
            background: linear-gradient(135deg, #e8f0fe 0%, #d2e3fc 100%);
            border-radius: 20px;
            position: relative;
            overflow: hidden;
        }

        /* Visual abstract shapes instead of missing images */
        .r50ey1-shape {
            position: absolute;
            background: var(--r50ey1-primary);
            opacity: 0.1;
            border-radius: 50%;
        }

        /* How to Section */
        .r50ey1-guide {
            padding: 100px 0;
        }

        .r50ey1-step-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .r50ey1-step {
            display: flex;
            gap: 32px;
            margin-bottom: 48px;
            position: relative;
        }

        .r50ey1-step-num {
            width: 48px;
            height: 48px;
            background: var(--r50ey1-text);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }

        .r50ey1-step-content h4 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        /* Ecosystem Section */
        .r50ey1-eco-section {
            padding: 120px 0;
            background: var(--r50ey1-text);
            color: #fff;
            border-radius: 64px 64px 0 0;
        }

        .r50ey1-eco-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 48px;
        }

        .r50ey1-eco-item h3 {
            color: var(--r50ey1-accent);
            margin-bottom: 24px;
            font-size: 1.8rem;
        }

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

        .r50ey1-eco-list li {
            margin-bottom: 16px;
            padding-left: 24px;
            position: relative;
            opacity: 0.8;
        }

        .r50ey1-eco-list li::before {
            content: "→";
            position: absolute;
            left: 0;
            color: var(--r50ey1-accent);
        }

        /* Footer */
        .r50ey1-footer {
            padding: 80px 0 40px;
            background: #fff;
            text-align: center;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .r50ey1-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 24px;
            display: block;
        }

        .r50ey1-footer-links {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .r50ey1-footer-links a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-size: 0.9rem;
        }

        .r50ey1-copyright {
            font-size: 0.85rem;
            color: #9aa0a6;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .r50ey1-tech-visual {
                width: 100%;
                margin-top: 32px;
            }
            .r50ey1-tech-info {
                padding-right: 0;
            }
        }

        @media (max-width: 768px) {
            .r50ey1-menu {
                display: none; /* In a real scenario, implement a hamburger menu */
            }
            .r50ey1-hero h1 {
                font-size: 2.8rem;
            }
            .r50ey1-tech-item {
                flex-direction: column;
            }
            .r50ey1-tech-stack {
                margin: 32px 12px;
                padding: 40px 0;
            }
        }

        /* Animations */
        @keyframes r50ey1-fadeInUp {
            from { transform: translateY(30px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }

        .r50ey1-animate {
            animation: r50ey1-fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
        }