:root {
            --mldow-primary: #2c3e50;
            --mldow-accent: #3498db;
            --mldow-success: #27ae60;
            --mldow-warning: #f39c12;
            --mldow-text: #334155;
            --mldow-bg-light: #f8fafc;
            --mldow-white: #ffffff;
            --mldow-border: #e2e8f0;
            --mldow-radius: 16px;
            --mldow-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

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

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--mldow-bg-light);
            color: var(--mldow-text);
            line-height: 1.8;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局容器 */
        .mldow-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .mldow-navbar {
            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 var(--mldow-border);
            padding: 12px 0;
        }

        .mldow-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

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

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

        .mldow-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
        }

        .mldow-nav-links li {
            min-width: 0;
        }

        .mldow-nav-links a {
            text-decoration: none;
            color: var(--mldow-text);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .mldow-nav-links a:hover {
            color: var(--mldow-accent);
            background: rgba(52, 152, 219, 0.05);
        }

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

        /* Hero 区块 */
        .mldow-hero {
            padding: 160px 0 80px;
            background: radial-gradient(circle at top right, #edf2f7 0%, #f8fafc 100%);
            text-align: center;
        }

        .mldow-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

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

        .mldow-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: #64748b;
            margin-bottom: 48px;
        }

        /* 对比网格系统 */
        .mldow-comparison-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

        .mldow-card {
            background: var(--mldow-white);
            border-radius: var(--mldow-radius);
            padding: 48px;
            box-shadow: var(--mldow-shadow);
            border: 1px solid var(--mldow-border);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .mldow-card:hover {
            transform: translateY(-8px);
        }

        .mldow-card-pro {
            border: 2px solid var(--mldow-accent);
            position: relative;
        }

        .mldow-badge {
            position: absolute;
            top: 24px;
            right: 24px;
            background: var(--mldow-accent);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: bold;
        }

        .mldow-card-header {
            margin-bottom: 32px;
            text-align: center;
        }

        .mldow-card-header h3 {
            font-size: 28px;
            margin-bottom: 8px;
            color: var(--mldow-primary);
        }

        .mldow-price {
            font-size: 36px;
            font-weight: 800;
            color: var(--mldow-accent);
        }

        .mldow-price span {
            font-size: 16px;
            font-weight: normal;
            color: #94a3b8;
        }

        .mldow-feature-list {
            list-style: none;
            margin-bottom: 40px;
            flex-grow: 1;
        }

        .mldow-feature-list li {
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
            display: flex;
            align-items: center;
            font-size: 15px;
            word-break: break-word;
        }

        .mldow-feature-list li::before {
            content: "✓";
            margin-right: 12px;
            color: var(--mldow-success);
            font-weight: bold;
        }

        .mldow-feature-list li.mldow-limited {
            color: #94a3b8;
        }

        .mldow-feature-list li.mldow-limited::before {
            content: "○";
            color: var(--mldow-warning);
        }

        .mldow-btn {
            display: inline-block;
            text-align: center;
            padding: 16px 32px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .mldow-btn-primary {
            background: var(--mldow-accent);
            color: white;
        }

        .mldow-btn-outline {
            border: 2px solid var(--mldow-accent);
            color: var(--mldow-accent);
        }

        .mldow-btn:hover {
            opacity: 0.9;
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
        }

        /* 深度对比详情 */
        .mldow-detail-section {
            padding: 96px 0;
        }

        .mldow-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .mldow-section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            color: var(--mldow-primary);
            margin-bottom: 16px;
        }

        .mldow-detail-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 48px;
        }

        .mldow-detail-item {
            min-width: 0;
            padding: 24px;
            background: var(--mldow-white);
            border-radius: var(--mldow-radius);
            border-left: 4px solid var(--mldow-accent);
        }

        .mldow-detail-item h4 {
            margin-bottom: 12px;
            font-size: 18px;
            color: var(--mldow-primary);
        }

        .mldow-detail-item p {
            color: #64748b;
            font-size: 15px;
        }

        /* 底部 */
        .mldow-footer {
            background: var(--mldow-primary);
            color: #cbd5e1;
            padding: 80px 0 40px;
        }

        .mldow-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .mldow-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .mldow-footer-brand h2 {
            color: var(--mldow-white);
            margin-bottom: 24px;
        }

        .mldow-footer-links {
            flex: 2;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 24px;
        }

        .mldow-footer-links h4 {
            color: var(--mldow-white);
            margin-bottom: 20px;
        }

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

        .mldow-footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            display: block;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

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

        .mldow-copyright {
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 12px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .mldow-nav-links {
                display: none; /* 简化移动端，实际开发中应有汉堡菜单 */
            }
            .mldow-hero {
                padding: 120px 0 60px;
            }
            .mldow-card {
                padding: 32px 24px;
            }
            .mldow-comparison-grid {
                margin-top: 24px;
            }
        }