:root {
            --r50ey1-primary: #4285F4;
            --r50ey1-success: #34A853;
            --r50ey1-warning: #FBBC04;
            --r50ey1-danger: #EA4335;
            --r50ey1-text-main: #202124;
            --r50ey1-text-sub: #5F6368;
            --r50ey1-bg-light: #F8F9FA;
            --r50ey1-white: #FFFFFF;
            --r50ey1-sidebar-width: 320px;
        }

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

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

        /* 导航系统 */
        .r50ey1-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 0 4%;
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .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;
            gap: 24px;
            list-style: none;
            min-width: 0;
        }

        .r50ey1-nav-item a {
            text-decoration: none;
            color: var(--r50ey1-text-sub);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.2s;
            white-space: nowrap;
        }

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

        .r50ey1-nav-item.r50ey1-active a {
            color: var(--r50ey1-primary);
            position: relative;
        }

        .r50ey1-nav-item.r50ey1-active a::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--r50ey1-primary);
            border-radius: 2px;
        }

        /* 主体容器 */
        .r50ey1-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Hero 区块 - 独特非对称布局 */
        .r50ey1-hero-section {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(66, 133, 244, 0.05) 0%, transparent 40%);
        }

        .r50ey1-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .r50ey1-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .r50ey1-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--r50ey1-text-main);
            letter-spacing: -0.02em;
            word-break: keep-all;
        }

        .r50ey1-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.35rem);
            color: var(--r50ey1-text-sub);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.8;
        }

        /* 模拟侧边栏组件 */
        .r50ey1-sidebar-mockup {
            flex: 1;
            min-width: 320px;
            background: var(--r50ey1-white);
            border-radius: 24px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.08);
            padding: 24px;
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.5s ease;
        }

        .r50ey1-sidebar-mockup:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

        .r50ey1-mock-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 24px;
            border-bottom: 1px solid #eee;
            padding-bottom: 12px;
        }

        .r50ey1-mock-item {
            height: 40px;
            background: var(--r50ey1-bg-light);
            margin-bottom: 12px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            padding: 0 16px;
            color: var(--r50ey1-text-sub);
            font-size: 14px;
        }

        /* 核心技术逻辑栈 */
        .r50ey1-logic-section {
            padding: 96px 0;
            background-color: var(--r50ey1-bg-light);
        }

        .r50ey1-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .r50ey1-grid-layout {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .r50ey1-logic-card {
            background: var(--r50ey1-white);
            padding: 40px;
            border-radius: 16px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .r50ey1-logic-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.05);
            border-color: var(--r50ey1-primary);
        }

        .r50ey1-card-tag {
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            color: var(--r50ey1-primary);
            margin-bottom: 16px;
            display: inline-block;
        }

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

        .r50ey1-card-desc {
            font-size: 15px;
            color: var(--r50ey1-text-sub);
            line-height: 1.7;
        }

        /* 智能生产力生态 */
        .r50ey1-ecosystem-section {
            padding: 96px 0;
        }

        .r50ey1-feature-block {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }

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

        .r50ey1-feature-info {
            flex: 1;
            min-width: 320px;
        }

        .r50ey1-feature-visual {
            flex: 1;
            min-width: 320px;
            height: 300px;
            background: linear-gradient(135deg, var(--r50ey1-bg-light) 0%, #eef2f7 100%);
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

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

        .r50ey1-capability-item {
            padding: 12px 0;
            padding-left: 32px;
            position: relative;
            font-size: 16px;
            color: var(--r50ey1-text-main);
            border-bottom: 1px solid #f0f0f0;
        }

        .r50ey1-capability-item::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--r50ey1-success);
            font-weight: bold;
        }

        /* 未来愿景里程碑 */
        .r50ey1-vision-section {
            padding: 96px 0;
            background-color: #1a1c1e;
            color: var(--r50ey1-white);
        }

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

        .r50ey1-vision-card {
            flex: 1;
            min-width: 280px;
            padding: 32px;
            background: rgba(255,255,255,0.05);
            border-radius: 12px;
            border-left: 4px solid var(--r50ey1-primary);
        }

        .r50ey1-vision-card:nth-child(2) { border-left-color: var(--r50ey1-warning); }
        .r50ey1-vision-card:nth-child(3) { border-left-color: var(--r50ey1-success); }

        .r50ey1-vision-period {
            font-weight: 700;
            color: rgba(255,255,255,0.5);
            margin-bottom: 8px;
            display: block;
        }

        /* 页脚 */
        .r50ey1-footer {
            padding: 64px 0;
            border-top: 1px solid #eee;
            background: var(--r50ey1-white);
        }

        .r50ey1-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: flex-start;
            gap: 40px;
        }

        .r50ey1-footer-brand {
            font-size: 24px;
            font-weight: 700;
            color: var(--r50ey1-text-main);
        }

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

        .r50ey1-footer-col h4 {
            margin-bottom: 20px;
            font-size: 14px;
            color: var(--r50ey1-text-main);
        }

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

        .r50ey1-footer-col li {
            margin-bottom: 12px;
        }

        .r50ey1-footer-col a {
            text-decoration: none;
            color: var(--r50ey1-text-sub);
            font-size: 14px;
            transition: color 0.2s;
        }

        .r50ey1-footer-col a:hover {
            color: var(--r50ey1-primary);
        }

        .r50ey1-copyright {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid #f0f0f0;
            text-align: center;
            font-size: 13px;
            color: var(--r50ey1-text-sub);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .r50ey1-nav-menu {
                display: none; /* 简化移动端处理 */
            }
            .r50ey1-hero-section {
                padding-top: 120px;
                text-align: center;
            }
            .r50ey1-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .r50ey1-hero-grid {
                flex-direction: column;
            }
            .r50ey1-feature-block {
                flex-direction: column !important;
            }
        }
    


        @keyframes pulse {
            0% { transform: scale(1); opacity: 0.8; }
            50% { transform: scale(1.1); opacity: 1; }
            100% { transform: scale(1); opacity: 0.8; }
        }