:root {
            --m04y-primary: #D44331;
            --m04y-secondary: #2766FF;
            --m04y-dark: #1D1D1F;
            --m04y-light: #F5F7FA;
            --m04y-glass: rgba(255, 255, 255, 0.8);
            --m04y-text-main: #333333;
            --m04y-text-muted: #666666;
            --m04y-max-width: 1100px;
            --m04y-spacing-unit: 8px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: #fff;
            color: var(--m04y-text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航系统 */
        .m04y-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: var(--m04y-glass);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .m04y-nav-container {
            max-width: var(--m04y-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: 72px;
        }

        .m04y-logo {
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .m04y-logo img {
            height: 32px;
            width: auto;
        }

        .m04y-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .m04y-menu-item a {
            text-decoration: none;
            color: var(--m04y-text-main);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .m04y-menu-item a:hover {
            color: var(--m04y-primary);
        }

        .m04y-menu-item.active a {
            color: var(--m04y-primary);
            position: relative;
        }

        .m04y-menu-item.active a::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--m04y-primary);
        }

        /* Hero 视觉区 - 采用非对称中心布局 */
        .m04y-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at top right, #fff5f5, #f0f7ff);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .m04y-hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .m04y-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(212, 67, 49, 0.1);
            color: var(--m04y-primary);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .m04y-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--m04y-dark);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .m04y-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.35rem);
            color: var(--m04y-text-muted);
            max-width: 600px;
            margin: 0 auto 40px;
            word-break: break-word;
        }

        .m04y-hero-visual {
            margin-top: 64px;
            perspective: 1000px;
        }

        .m04y-cloud-card {
            background: white;
            border-radius: 24px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
            padding: 32px;
            max-width: 900px;
            margin: 0 auto;
            transform: rotateX(10deg);
            transition: transform 0.5s ease;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .m04y-cloud-card:hover {
            transform: rotateX(0deg) translateY(-10px);
        }

        /* 生产力矩阵 - 2x2 网格 */
        .m04y-matrix-section {
            padding: 96px 24px;
            max-width: var(--m04y-max-width);
            margin: 0 auto;
        }

        .m04y-section-header {
            margin-bottom: 64px;
            text-align: left;
        }

        .m04y-section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .m04y-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
            gap: 32px;
        }

        .m04y-matrix-card {
            background: var(--m04y-light);
            border-radius: 20px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            min-width: 0;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .m04y-matrix-card:hover {
            background: #fff;
            border-color: rgba(0,0,0,0.1);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .m04y-card-icon {
            width: 56px;
            height: 56px;
            background: white;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }

        .m04y-card-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--m04y-dark);
        }

        .m04y-card-tech {
            font-size: 15px;
            color: var(--m04y-primary);
            font-weight: 600;
            margin-bottom: 20px;
            display: block;
        }

        .m04y-feature-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .m04y-feature-tag {
            background: rgba(255,255,255,0.8);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 13px;
            color: var(--m04y-text-muted);
            border: 1px solid rgba(0,0,0,0.05);
        }

        /* 动态内容区 */
        .m04y-dynamic-section {
            background: var(--m04y-dark);
            color: white;
            padding: 96px 24px;
        }

        .m04y-dynamic-container {
            max-width: var(--m04y-max-width);
            margin: 0 auto;
        }

        .m04y-news-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 48px;
        }

        .m04y-news-item {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 16px;
            transition: background 0.3s;
        }

        .m04y-news-item:hover {
            background: rgba(255,255,255,0.1);
        }

        /* 页脚 */
        .m04y-footer {
            padding: 80px 24px;
            background: #fff;
            border-top: 1px solid #eee;
        }

        .m04y-footer-content {
            max-width: var(--m04y-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .m04y-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .m04y-footer-logo-text {
            font-size: 24px;
            font-weight: 800;
            color: var(--m04y-dark);
            margin-bottom: 16px;
        }

        .m04y-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .m04y-footer-group h4 {
            margin-bottom: 24px;
            font-size: 16px;
        }

        .m04y-footer-group ul {
            list-style: none;
        }

        .m04y-footer-group li {
            margin-bottom: 12px;
        }

        .m04y-footer-group a {
            text-decoration: none;
            color: var(--m04y-text-muted);
            font-size: 14px;
            transition: color 0.3s;
        }

        .m04y-footer-group a:hover {
            color: var(--m04y-primary);
        }

        .m04y-copyright {
            max-width: var(--m04y-max-width);
            margin: 48px auto 0;
            padding-top: 32px;
            border-top: 1px solid #eee;
            font-size: 13px;
            color: #999;
            text-align: center;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .m04y-menu {
                display: none; /* 简化演示：移动端通常使用汉堡菜单 */
            }
            .m04y-grid {
                grid-template-columns: 1fr;
            }
            .m04y-hero {
                padding-top: 120px;
            }
            .m04y-footer-links {
                gap: 32px;
            }
        }

        /* 动画增强 */
        .m04y-animate-up {
            transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }
        .m04y-animate-up:hover {
            transform: translateY(-8px);
        }