:root {
            --wxmha-primary: #D44027;
            --wxmha-primary-hover: #B52D1A;
            --wxmha-dark: #1D1D1F;
            --wxmha-text: #333333;
            --wxmha-text-light: #666666;
            --wxmha-bg-light: #F5F5F7;
            --wxmha-white: #FFFFFF;
            --wxmha-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --wxmha-radius: 16px;
            --wxmha-container-width: 1340px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--wxmha-text);
            line-height: 1.6;
            background-color: var(--wxmha-white);
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Utilities */
        .wxmha-container {
            max-width: var(--wxmha-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .wxmha-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .wxmha-flex-center {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
        }

        .wxmha-grid {
            display: grid;
            gap: 32px;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            word-break: keep-all;
            white-space: normal;
        }

        .wxmha-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 4rem);
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--wxmha-dark);
        }

        .wxmha-section-title {
            font-size: clamp(1.5rem, 3vw + 0.5rem, 2.5rem);
            text-align: center;
            margin-bottom: 48px;
            font-weight: 700;
        }

        /* Navigation */
        .wxmha-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .wxmha-nav-container {
            height: 72px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .wxmha-logo {
            min-width: 0;
            flex-shrink: 0;
        }

        .wxmha-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .wxmha-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .wxmha-nav-link {
            text-decoration: none;
            color: var(--wxmha-text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .wxmha-nav-link:hover {
            color: var(--wxmha-primary);
            background: rgba(212, 64, 39, 0.05);
        }

        .wxmha-nav-link.wxmha-active {
            color: var(--wxmha-white);
            background: var(--wxmha-primary);
        }

        /* Hero Section - Unique Card Style */
        .wxmha-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, rgba(212, 64, 39, 0.05), transparent);
            position: relative;
        }

        .wxmha-hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .wxmha-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--wxmha-text-light);
            margin-bottom: 40px;
        }

        /* Download Options Area */
        .wxmha-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 64px;
        }

        .wxmha-download-card {
            background: var(--wxmha-white);
            border-radius: var(--wxmha-radius);
            padding: 40px;
            text-align: center;
            box-shadow: var(--wxmha-shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid rgba(0,0,0,0.03);
            min-width: 0;
        }

        .wxmha-download-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
        }

        .wxmha-os-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }

        .wxmha-btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .wxmha-btn-primary {
            background: var(--wxmha-primary);
            color: var(--wxmha-white);
            box-shadow: 0 4px 15px rgba(212, 64, 39, 0.3);
        }

        .wxmha-btn-primary:hover {
            background: var(--wxmha-primary-hover);
            transform: scale(1.05);
        }

        /* Ecosystem Section */
        .wxmha-ecosystem {
            padding: 96px 0;
            background-color: var(--wxmha-bg-light);
        }

        .wxmha-eco-grid {
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        }

        .wxmha-eco-item {
            background: var(--wxmha-white);
            padding: 32px;
            border-radius: var(--wxmha-radius);
            min-width: 0;
        }

        .wxmha-eco-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(212, 64, 39, 0.1);
            color: var(--wxmha-primary);
            font-size: 12px;
            font-weight: 700;
            border-radius: 4px;
            margin-bottom: 16px;
        }

        .wxmha-eco-features {
            margin-top: 16px;
            list-style: none;
        }

        .wxmha-eco-features li {
            font-size: 14px;
            color: var(--wxmha-text-light);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
        }

        .wxmha-eco-features li::before {
            content: "✓";
            margin-right: 8px;
            color: #27ae60;
            font-weight: bold;
        }

        /* Image-driven Sections */
        .wxmha-split-section {
            padding: 96px 0;
            display: flex;
            align-items: center;
            gap: 64px;
            flex-wrap: wrap;
        }

        .wxmha-split-section.wxmha-reverse {
            flex-direction: row-reverse;
        }

        .wxmha-split-image {
            flex: 1;
            min-width: 320px;
        }

        .wxmha-split-image img {
            width: 100%;
            height: auto;
            border-radius: var(--wxmha-radius);
            box-shadow: var(--wxmha-shadow);
            display: block;
        }

        .wxmha-split-text {
            flex: 1;
            min-width: 320px;
        }

        .wxmha-split-text h2 {
            margin-bottom: 24px;
            color: var(--wxmha-dark);
        }

        /* Installation Guide */
        .wxmha-guide-section {
            padding: 96px 0;
            background: var(--wxmha-dark);
            color: var(--wxmha-white);
            text-align: center;
        }

        .wxmha-guide-container {
            max-width: 1100px;
            margin: 0 auto;
        }

        .wxmha-guide-img {
            max-width: 100%;
            height: auto;
            margin-top: 48px;
            border-radius: 12px;
            opacity: 0.9;
        }

        /* Footer */
        .wxmha-footer {
            padding: 64px 0 32px;
            background: #fcfcfc;
            border-top: 1px solid #eee;
        }

        .wxmha-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 48px;
        }

        .wxmha-footer-brand h4 {
            font-size: 20px;
            color: var(--wxmha-primary);
            margin-bottom: 16px;
        }

        .wxmha-footer-links h5 {
            margin-bottom: 20px;
            font-size: 16px;
        }

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

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

        .wxmha-footer-links a {
            text-decoration: none;
            color: var(--wxmha-text-light);
            font-size: 14px;
            transition: color 0.2s;
        }

        .wxmha-footer-links a:hover {
            color: var(--wxmha-primary);
        }

        .wxmha-copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid #eee;
            font-size: 13px;
            color: #999;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .wxmha-nav-menu {
                display: none; /* In a real scenario, this would be a hamburger menu */
            }
            .wxmha-split-section {
                gap: 32px;
                text-align: center;
            }
        }

        @media (max-width: 768px) {
            :root {
                --wxmha-container-width: 100%;
            }
            .wxmha-hero {
                padding-top: 120px;
            }
            .wxmha-download-card {
                padding: 30px 20px;
            }
        }