: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-alt: #f8f9fa;
        }

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

        body {
            font-family: "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--r50ey1-text);
            background-color: var(--r50ey1-bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .r50ey1-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .r50ey1-header {
            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 #e0e0e0;
        }

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

        .r50ey1-logo {
            flex: 0 0 auto;
            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;
            gap: 8px;
            min-width: 0;
        }

        .r50ey1-nav-item a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .r50ey1-nav-item a:hover {
            background: #f1f3f4;
            color: var(--r50ey1-primary);
        }

        .r50ey1-nav-item.active a {
            color: var(--r50ey1-primary);
            background: #e8f0fe;
        }

        /* Hero 区块 - 独特非对称布局 */
        .r50ey1-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, #fffbeb 0%, #ffffff 50%);
            overflow: hidden;
        }

        .r50ey1-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            min-width: 0;
        }

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

        .r50ey1-hero-tag {
            display: inline-block;
            background: var(--r50ey1-warning);
            color: #000;
            padding: 4px 12px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 12px;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .r50ey1-hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--r50ey1-text);
            word-break: keep-all;
        }

        .r50ey1-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--r50ey1-text-light);
            max-width: 600px;
            margin-bottom: 40px;
        }

        .r50ey1-hero-image {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .r50ey1-hero-image img {
            width: 100%;
            height: auto;
            border-radius: 24px;
            box-shadow: 0 40px 80px rgba(0,0,0,0.1);
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.5s ease;
        }

        .r50ey1-hero-image:hover img {
            transform: perspective(1000px) rotateY(0deg);
        }

        /* 核心架构区块 - Grid 布局 */
        .r50ey1-section {
            padding: 96px 0;
        }

        .r50ey1-section-title {
            text-align: center;
            font-size: clamp(2rem, 4vw, 2.5rem);
            margin-bottom: 64px;
            word-break: keep-all;
        }

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

        .r50ey1-card {
            background: var(--r50ey1-bg-alt);
            padding: 48px;
            border-radius: 24px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid transparent;
            word-break: break-word;
        }

        .r50ey1-card:hover {
            transform: translateY(-10px);
            background: #fff;
            border-color: var(--r50ey1-primary);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .r50ey1-card-icon {
            font-size: 32px;
            margin-bottom: 24px;
            display: block;
            color: var(--r50ey1-primary);
        }

        .r50ey1-card-title {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--r50ey1-text);
        }

        .r50ey1-card-desc {
            color: var(--r50ey1-text-light);
            font-size: 16px;
            line-height: 1.8;
        }

        /* 性能可视化区块 - 交错布局 */
        .r50ey1-split-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            margin-bottom: 96px;
            min-width: 0;
        }

        .r50ey1-split-row.reverse {
            flex-direction: row-reverse;
        }

        .r50ey1-split-media {
            flex: 1;
            min-width: 320px;
        }

        .r50ey1-split-media img {
            width: 100%;
            height: auto;
            border-radius: 24px;
        }

        .r50ey1-split-info {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .r50ey1-feature-list {
            list-style: none;
            margin-top: 32px;
        }

        .r50ey1-feature-item {
            padding: 16px 0;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .r50ey1-feature-item::before {
            content: "✓";
            color: var(--r50ey1-success);
            font-weight: bold;
        }

        /* 愿景区块 */
        .r50ey1-vision {
            background: #202124;
            color: #fff;
            border-radius: 48px;
            padding: 80px;
            margin: 48px 0;
        }

        .r50ey1-vision-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            min-width: 0;
        }

        .r50ey1-vision-item {
            flex: 1;
            min-width: 260px;
        }

        .r50ey1-vision-label {
            color: var(--r50ey1-warning);
            font-weight: 600;
            margin-bottom: 12px;
            display: block;
        }

        .r50ey1-vision-text {
            font-size: 18px;
            opacity: 0.9;
        }

        /* 页脚 */
        .r50ey1-footer {
            background: var(--r50ey1-bg-alt);
            padding: 80px 0 40px;
            border-top: 1px solid #e0e0e0;
        }

        .r50ey1-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
            min-width: 0;
        }

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

        .r50ey1-footer-logo-text {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--r50ey1-text);
        }

        .r50ey1-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            flex: 2;
            min-width: 0;
        }

        .r50ey1-footer-column {
            min-width: 140px;
        }

        .r50ey1-footer-column h4 {
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--r50ey1-text);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

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

        .r50ey1-footer-column a {
            text-decoration: none;
            color: var(--r50ey1-text-light);
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .r50ey1-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #eee;
            color: var(--r50ey1-text-light);
            font-size: 12px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .r50ey1-nav-menu {
                display: none; /* 简化移动端，实际开发中应有汉堡菜单 */
            }
            .r50ey1-hero {
                padding-top: 120px;
                text-align: center;
            }
            .r50ey1-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .r50ey1-hero-image img {
                transform: none;
            }
            .r50ey1-vision {
                padding: 40px;
                border-radius: 24px;
            }
            .r50ey1-split-row.reverse {
                flex-direction: row;
            }
        }