:root {
            --r50ey1-primary: #4285F4;
            --r50ey1-success: #34A853;
            --r50ey1-accent: #FBBC04;
            --r50ey1-error: #EA4335;
            --r50ey1-text: #202124;
            --r50ey1-text-light: #5f6368;
            --r50ey1-bg: #ffffff;
            --r50ey1-bg-alt: #f8f9fa;
            --r50ey1-spacing-unit: 8px;
            --r50ey1-radius: 16px;
            --r50ey1-container-width: 1100px;
        }

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

        body {
            font-family: 'Google Sans', '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: keep-all;
        }

        /* 导航栏 */
        .r50ey1-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .r50ey1-nav-container {
            max-width: var(--r50ey1-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
        }

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

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

        .r50ey1-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .r50ey1-menu a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 20px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .r50ey1-menu a:hover {
            background: rgba(66, 133, 244, 0.08);
            color: var(--r50ey1-primary);
        }

        .r50ey1-menu a.r50ey1-active {
            background: var(--r50ey1-primary);
            color: white;
        }

        /* Hero 区块 - 独特非对称布局 */
        .r50ey1-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at 90% 10%, rgba(66, 133, 244, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(52, 168, 83, 0.05) 0%, transparent 40%);
        }

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

        .r50ey1-hero-text {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .r50ey1-hero-text h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .r50ey1-hero-text p {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--r50ey1-text-light);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .r50ey1-hero-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .r50ey1-scanner-box {
            width: 100%;
            max-width: 450px;
            aspect-ratio: 1;
            background: white;
            border-radius: 40px;
            box-shadow: 0 40px 80px rgba(0,0,0,0.08);
            padding: 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(0,0,0,0.03);
            position: relative;
            overflow: hidden;
        }

        .r50ey1-shield-icon {
            width: 120px;
            height: 120px;
            background: var(--r50ey1-success);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            box-shadow: 0 10px 30px rgba(52, 168, 83, 0.3);
            transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .r50ey1-shield-icon:hover {
            transform: scale(1.1) rotate(5deg);
        }

        .r50ey1-shield-inner {
            width: 60px;
            height: 60px;
            border: 6px solid white;
            border-top: transparent;
            border-right: transparent;
            transform: rotate(-45deg);
            margin-top: -10px;
        }

        .r50ey1-status-text {
            font-size: 24px;
            font-weight: 700;
            color: var(--r50ey1-success);
            margin-bottom: 8px;
        }

        .r50ey1-status-sub {
            color: var(--r50ey1-text-light);
            font-size: 14px;
        }

        /* 核心特性网格 */
        .r50ey1-features {
            padding: 80px 24px;
            background-color: var(--r50ey1-bg-alt);
        }

        .r50ey1-section-title {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 64px;
        }

        .r50ey1-section-title h2 {
            font-size: clamp(2rem, 3vw + 1rem, 2.75rem);
            margin-bottom: 16px;
        }

        .r50ey1-grid {
            max-width: var(--r50ey1-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .r50ey1-card {
            background: white;
            padding: 40px;
            border-radius: var(--r50ey1-radius);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid rgba(0,0,0,0.03);
            min-width: 0;
        }

        .r50ey1-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .r50ey1-card h3 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--r50ey1-primary);
        }

        .r50ey1-card ul {
            list-style: none;
        }

        .r50ey1-card li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--r50ey1-text-light);
            line-height: 1.6;
        }

        .r50ey1-card li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--r50ey1-accent);
            font-weight: bold;
            font-size: 20px;
        }

        /* 技术深度区块 */
        .r50ey1-tech-stack {
            padding: 96px 24px;
            max-width: var(--r50ey1-container-width);
            margin: 0 auto;
        }

        .r50ey1-tech-item {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            margin-bottom: 80px;
        }

        .r50ey1-tech-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .r50ey1-tech-content {
            flex: 1;
            min-width: 300px;
        }

        .r50ey1-tech-content h4 {
            font-size: 28px;
            margin-bottom: 16px;
        }

        .r50ey1-tech-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(234, 67, 53, 0.1);
            color: var(--r50ey1-error);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .r50ey1-tech-desc {
            font-size: 16px;
            color: var(--r50ey1-text-light);
            margin-bottom: 24px;
        }

        .r50ey1-performance-bar {
            height: 6px;
            background: #eee;
            border-radius: 3px;
            width: 100%;
            overflow: hidden;
            margin-top: 8px;
        }

        .r50ey1-bar-inner {
            height: 100%;
            background: var(--r50ey1-primary);
            border-radius: 3px;
        }

        /* 未来愿景区块 */
        .r50ey1-vision {
            padding: 80px 24px;
            background: var(--r50ey1-text);
            color: white;
            text-align: center;
        }

        .r50ey1-vision-container {
            max-width: 900px;
            margin: 0 auto;
        }

        .r50ey1-timeline {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-top: 48px;
        }

        .r50ey1-timeline-item {
            flex: 1;
            min-width: 240px;
            padding: 32px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--r50ey1-radius);
            border: 1px solid rgba(255,255,255,0.1);
        }

        .r50ey1-timeline-item span {
            display: block;
            color: var(--r50ey1-accent);
            font-weight: 700;
            margin-bottom: 12px;
        }

        /* 页脚 */
        .r50ey1-footer {
            padding: 64px 24px;
            border-top: 1px solid #eee;
            background: white;
        }

        .r50ey1-footer-content {
            max-width: var(--r50ey1-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .r50ey1-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--r50ey1-text);
        }

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

        .r50ey1-link-group h5 {
            font-size: 14px;
            margin-bottom: 16px;
            color: var(--r50ey1-text);
        }

        .r50ey1-link-group a {
            display: block;
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-size: 14px;
            margin-bottom: 8px;
            transition: color 0.3s;
        }

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

        .r50ey1-copyright {
            max-width: var(--r50ey1-container-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid #eee;
            font-size: 12px;
            color: #999;
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .r50ey1-menu {
                display: none; /* 简化移动端，实际项目中应使用汉堡菜单 */
            }
            .r50ey1-hero {
                padding-top: 100px;
                text-align: center;
            }
            .r50ey1-hero-text p {
                margin: 0 auto 32px;
            }
            .r50ey1-tech-item, .r50ey1-tech-item:nth-child(even) {
                flex-direction: column;
            }
        }