:root {
            --mldow-primary: #0366d6;
            --mldow-accent: #f39c12;
            --mldow-dark: #1a1c23;
            --mldow-light: #f8f9fa;
            --mldow-text: #2c3e50;
            --mldow-gray: #6c757d;
            --mldow-success: #27ae60;
            --mldow-radius: 16px;
            --mldow-container-width: 1100px;
            --mldow-font-base: clamp(1rem, 0.5vw + 0.8rem, 1.125rem);
        }

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

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            font-size: var(--mldow-font-base);
            line-height: 1.6;
            color: var(--mldow-text);
            background-color: #ffffff;
            overflow-x: hidden;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* 导航系统 */
        .mldow-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

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

        .mldow-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .mldow-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .mldow-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .mldow-menu li a {
            text-decoration: none;
            color: var(--mldow-text);
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.2s;
            font-size: 0.95rem;
        }

        .mldow-menu li a:hover {
            background: rgba(3, 102, 214, 0.1);
            color: var(--mldow-primary);
        }

        .mldow-menu li a.mldow-active {
            background: var(--mldow-primary);
            color: #fff;
        }

        /* Hero 区块 - 独特非对称布局 */
        .mldow-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, #f0f7ff 0%, #ffffff 70%);
            position: relative;
            overflow: hidden;
        }

        .mldow-hero-grid {
            max-width: var(--mldow-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            align-items: center;
        }

        .mldow-hero-content {
            min-width: 0;
        }

        .mldow-hero-tag {
            display: inline-block;
            background: rgba(243, 156, 18, 0.1);
            color: var(--mldow-accent);
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .mldow-hero h1 {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--mldow-dark);
            white-space: normal;
        }

        .mldow-hero p {
            font-size: 1.25rem;
            color: var(--mldow-gray);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .mldow-visual-card {
            background: var(--mldow-dark);
            border-radius: 24px;
            padding: 32px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
            position: relative;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .mldow-code-window {
            font-family: 'Consolas', monospace;
            color: #a9b7c6;
            background: #2b2b2b;
            padding: 20px;
            border-radius: 12px;
            font-size: 0.9rem;
            line-height: 1.5;
        }

        .mldow-code-line { display: block; }
        .mldow-code-keyword { color: #cc7832; }
        .mldow-code-string { color: #6a8759; }

        /* 内容分层区块 */
        .mldow-section {
            padding: 96px 24px;
            max-width: var(--mldow-container-width);
            margin: 0 auto;
        }

        .mldow-grid-2 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 64px;
            align-items: center;
        }

        .mldow-text-block h2 {
            font-size: 2.25rem;
            margin-bottom: 24px;
            position: relative;
            padding-bottom: 16px;
        }

        .mldow-text-block h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background: var(--mldow-primary);
        }

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

        .mldow-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 24px;
        }

        .mldow-feature-icon {
            flex: 0 0 48px;
            height: 48px;
            background: var(--mldow-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--mldow-primary);
            font-weight: bold;
            font-size: 1.2rem;
        }

        /* 核心卡片组件 */
        .mldow-protocol-nexus {
            background: var(--mldow-light);
            padding: 80px 24px;
            border-radius: 48px;
            margin: 0 24px;
        }

        .mldow-nexus-grid {
            max-width: var(--mldow-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .mldow-nexus-card {
            flex: 1 1 300px;
            min-width: 0;
            background: #fff;
            padding: 40px;
            border-radius: var(--mldow-radius);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }

        .mldow-nexus-card:hover {
            transform: translateY(-10px);
        }

        .mldow-nexus-card h3 {
            margin-bottom: 16px;
            color: var(--mldow-primary);
        }

        .mldow-tech-highlight {
            font-size: 0.9rem;
            color: var(--mldow-gray);
            border-top: 1px solid #eee;
            margin-top: 24px;
            padding-top: 16px;
            font-style: italic;
        }

        /* 底部 CTA 区块 */
        .mldow-cta {
            text-align: center;
            background: var(--mldow-primary);
            color: #fff;
            padding: 80px 24px;
            margin: 80px 24px;
            border-radius: 32px;
        }

        .mldow-cta h2 {
            font-size: 2.5rem;
            margin-bottom: 24px;
        }

        .mldow-btn {
            display: inline-block;
            padding: 16px 40px;
            background: #fff;
            color: var(--mldow-primary);
            text-decoration: none;
            border-radius: 50px;
            font-weight: 700;
            transition: all 0.3s;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        .mldow-btn:hover {
            transform: scale(1.05);
            background: var(--mldow-accent);
            color: #fff;
        }

        /* 页脚 */
        .mldow-footer {
            background: var(--mldow-dark);
            color: #fff;
            padding: 64px 24px;
        }

        .mldow-footer-content {
            max-width: var(--mldow-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
        }

        .mldow-footer-brand h4 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--mldow-accent);
        }

        .mldow-footer-links h5 {
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .mldow-footer-links ul {
            list-style: none;
        }

        .mldow-footer-links li {
            margin-bottom: 12px;
        }

        .mldow-footer-links a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.2s;
        }

        .mldow-footer-links a:hover {
            color: #fff;
        }

        .mldow-bottom-bar {
            text-align: center;
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #6c757d;
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .mldow-nav-container {
                flex-direction: column;
                gap: 16px;
            }
            .mldow-menu {
                justify-content: center;
            }
            .mldow-hero {
                padding-top: 120px;
            }
            .mldow-section {
                padding: 48px 24px;
            }
            .mldow-grid-2 {
                grid-template-columns: 1fr;
            }
        }