:root {
            --mldow-primary: #2c3e50;
            --mldow-accent: #f39c12;
            --mldow-secondary: #34495e;
            --mldow-text: #333333;
            --mldow-light-bg: #f8f9fa;
            --mldow-white: #ffffff;
            --mldow-gradient: linear-gradient(135deg, #2c3e50 0%, #4a69bd 100%);
            --mldow-shadow: 0 10px 30px rgba(0,0,0,0.1);
            --mldow-radius: 12px;
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--mldow-text);
            line-height: 1.7;
            background-color: var(--mldow-white);
            word-break: break-word;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .mldow-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 0 24px;
        }

        .mldow-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

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

        .mldow-logo img {
            height: 45px;
            width: auto;
            display: block;
        }

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

        .mldow-menu li a {
            text-decoration: none;
            color: var(--mldow-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
            word-break: keep-all;
        }

        .mldow-menu li a:hover {
            color: var(--mldow-accent);
            background: rgba(243, 156, 18, 0.05);
        }

        .mldow-menu li a.active {
            color: var(--mldow-white);
            background: var(--mldow-accent);
        }

        /* 核心布局 */
        .mldow-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Hero 下载区 - 独特卡片布局 */
        .mldow-hero {
            padding: 96px 0 64px;
            background: radial-gradient(circle at top right, rgba(74, 105, 189, 0.05), transparent);
            text-align: center;
        }

        .mldow-hero-badge {
            display: inline-block;
            background: rgba(243, 156, 18, 0.1);
            color: var(--mldow-accent);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .mldow-hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--mldow-primary);
            margin-bottom: 24px;
            white-space: normal;
        }

        .mldow-hero p {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: #666;
            max-width: 800px;
            margin: 0 auto 48px;
        }

        /* 下载控制面板 */
        .mldow-download-panel {
            display: flex;
            flex-wrap: wrap;
            background: var(--mldow-white);
            border: 1px solid rgba(0,0,0,0.08);
            border-radius: var(--mldow-radius);
            box-shadow: var(--mldow-shadow);
            overflow: hidden;
            margin-bottom: 64px;
            min-width: 0;
        }

        .mldow-download-info {
            flex: 1 1 400px;
            padding: 48px;
            text-align: left;
            min-width: 0;
        }

        .mldow-download-action {
            flex: 0 0 350px;
            background: var(--mldow-light-bg);
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            border-left: 1px solid rgba(0,0,0,0.05);
            min-width: 0;
        }

        .mldow-btn-main {
            display: inline-block;
            background: var(--mldow-gradient);
            color: var(--mldow-white);
            padding: 18px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 18px;
            box-shadow: 0 10px 20px rgba(44, 62, 80, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            margin-bottom: 16px;
        }

        .mldow-btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(44, 62, 80, 0.3);
        }

        .mldow-version-meta {
            font-size: 13px;
            color: #888;
        }

        /* 协议网格区 */
        .mldow-section {
            padding: 80px 0;
        }

        .mldow-section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .mldow-section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            margin-bottom: 16px;
            color: var(--mldow-primary);
        }

        .mldow-protocol-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .mldow-protocol-card {
            background: var(--mldow-white);
            padding: 32px;
            border-radius: var(--mldow-radius);
            border: 1px solid #eee;
            transition: all 0.3s ease;
            min-width: 0;
        }

        .mldow-protocol-card:hover {
            border-color: var(--mldow-accent);
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transform: translateY(-5px);
        }

        .mldow-card-icon {
            font-size: 32px;
            margin-bottom: 20px;
            display: block;
        }

        .mldow-protocol-card h3 {
            margin-bottom: 12px;
            color: var(--mldow-secondary);
        }

        .mldow-tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .mldow-tag {
            font-size: 12px;
            background: #f0f2f5;
            padding: 2px 10px;
            border-radius: 4px;
            color: #555;
        }

        /* 技术亮点区 */
        .mldow-highlight-box {
            background: var(--mldow-primary);
            color: var(--mldow-white);
            border-radius: var(--mldow-radius);
            padding: 64px;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
            min-width: 0;
        }

        .mldow-highlight-content {
            flex: 1 1 400px;
            min-width: 0;
        }

        .mldow-highlight-content h2 {
            color: var(--mldow-accent);
            margin-bottom: 24px;
        }

        .mldow-highlight-list {
            list-style: none;
        }

        .mldow-highlight-list li {
            margin-bottom: 16px;
            padding-left: 24px;
            position: relative;
        }

        .mldow-highlight-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--mldow-accent);
            font-weight: bold;
        }

        /* 页脚 */
        .mldow-footer {
            background: #1a252f;
            color: rgba(255,255,255,0.7);
            padding: 80px 24px 40px;
        }

        .mldow-footer-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .mldow-footer-brand h4 {
            color: #fff;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .mldow-footer-links h5 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

        .mldow-footer-links ul li {
            margin-bottom: 10px;
        }

        .mldow-footer-links ul li a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: color 0.3s;
        }

        .mldow-footer-links ul li a:hover {
            color: var(--mldow-accent);
        }

        .mldow-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .mldow-nav-container {
                height: auto;
                padding: 16px 0;
            }
            .mldow-menu {
                justify-content: center;
                margin-top: 16px;
                width: 100%;
            }
            .mldow-download-action {
                flex: 1 1 100%;
                border-left: none;
                border-top: 1px solid rgba(0,0,0,0.05);
            }
            .mldow-highlight-box {
                padding: 32px;
            }
        }