:root {
            --r50ey1-primary: #4285F4;
            --r50ey1-success: #34A853;
            --r50ey1-warning: #FBBC04;
            --r50ey1-danger: #EA4335;
            --r50ey1-text: #202124;
            --r50ey1-text-light: #5f6368;
            --r50ey1-bg: #ffffff;
            --r50ey1-bg-soft: #f8f9fa;
            --r50ey1-radius: 16px;
            --r50ey1-shadow: 0 4px 20px rgba(0,0,0,0.08);
            --r50ey1-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            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;
            word-break: break-word;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .r50ey1-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid #eee;
            padding: 0 5vw;
        }

        .r50ey1-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
        }

        .r50ey1-logo {
            flex: 0 0 auto;
            display: flex;
            align-items: center;
            margin-right: 32px;
        }

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

        .r50ey1-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .r50ey1-nav-item a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--r50ey1-transition);
        }

        .r50ey1-nav-item a:hover {
            background: var(--r50ey1-bg-soft);
            color: var(--r50ey1-primary);
        }

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

        /* Hero 检测区 */
        .r50ey1-hero {
            padding: 160px 5vw 80px;
            background: radial-gradient(circle at 80% 20%, rgba(66, 133, 244, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 20% 80%, rgba(234, 67, 53, 0.05) 0%, transparent 40%);
            text-align: center;
        }

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

        .r50ey1-version-card {
            background: #fff;
            border-radius: 32px;
            padding: 48px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.05);
            margin-top: 48px;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .r50ey1-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .r50ey1-version-display {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        .r50ey1-version-number {
            font-size: clamp(2.5rem, 8vw, 5rem);
            font-weight: 900;
            color: var(--r50ey1-primary);
            font-family: 'Courier New', monospace;
            letter-spacing: 2px;
        }

        .r50ey1-status-badge {
            background: var(--r50ey1-success);
            color: white;
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: bold;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* 核心架构区 */
        .r50ey1-section {
            padding: 96px 5vw;
            max-width: 1400px;
            margin: 0 auto;
        }

        .r50ey1-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .r50ey1-card {
            background: var(--r50ey1-bg-soft);
            padding: 40px;
            border-radius: var(--r50ey1-radius);
            transition: var(--r50ey1-transition);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .r50ey1-card:hover {
            transform: translateY(-8px);
            background: #fff;
            box-shadow: var(--r50ey1-shadow);
            border-color: #eee;
        }

        .r50ey1-accent-line {
            width: 40px;
            height: 4px;
            border-radius: 2px;
            margin-bottom: 24px;
        }

        .r50ey1-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .r50ey1-card p {
            color: var(--r50ey1-text-light);
            font-size: 16px;
            line-height: 1.7;
        }

        /* AI 生态区 */
        .r50ey1-ecosystem-box {
            background: #202124;
            color: #fff;
            border-radius: 40px;
            padding: 80px 5vw;
            margin: 40px auto;
            width: 90vw;
            max-width: 1400px;
        }

        .r50ey1-ecosystem-header {
            max-width: 800px;
            margin-bottom: 64px;
        }

        .r50ey1-feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
        }

        .r50ey1-feature-item h4 {
            color: var(--r50ey1-warning);
            margin-bottom: 16px;
            font-size: 20px;
        }

        .r50ey1-capability {
            list-style: none;
            margin-top: 12px;
        }

        .r50ey1-capability li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
            color: rgba(255,255,255,0.7);
        }

        /* 时间线/愿景 */
        .r50ey1-roadmap-container {
            max-width: 1100px;
            margin: 0 auto;
            position: relative;
        }

        .r50ey1-roadmap-item {
            display: flex;
            flex-wrap: wrap;
            margin-bottom: 48px;
            gap: 24px;
            align-items: flex-start;
        }

        .r50ey1-period-tag {
            background: var(--r50ey1-bg-soft);
            padding: 8px 24px;
            border-radius: 12px;
            font-weight: 700;
            color: var(--r50ey1-primary);
            min-width: 100px;
            text-align: center;
        }

        .r50ey1-roadmap-content {
            flex: 1;
            min-width: 280px;
            background: #fff;
            padding: 24px;
            border-left: 4px solid var(--r50ey1-primary);
        }

        /* 页脚 */
        .r50ey1-footer {
            background: var(--r50ey1-bg-soft);
            padding: 80px 5vw 40px;
            margin-top: 80px;
        }

        .r50ey1-footer-top {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid #ddd;
        }

        .r50ey1-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .r50ey1-footer-brand h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .r50ey1-footer-column h5 {
            margin-bottom: 20px;
            font-size: 16px;
        }

        .r50ey1-footer-column ul {
            list-style: none;
        }

        .r50ey1-footer-column li {
            margin-bottom: 10px;
        }

        .r50ey1-footer-column a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-size: 14px;
        }

        .r50ey1-footer-bottom {
            max-width: 1400px;
            margin: 32px auto 0;
            text-align: center;
            color: #9aa0a6;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .r50ey1-navbar {
                padding: 12px 16px;
            }
            .r50ey1-nav-menu {
                display: none; /* 简化移动端处理 */
            }
            .r50ey1-hero {
                padding-top: 120px;
            }
            .r50ey1-version-card {
                padding: 32px 20px;
            }
            .r50ey1-grid {
                grid-template-columns: 1fr;
            }
        }