:root {
            --eztx-primary: #D43221;
            --eztx-secondary: #1E50A2;
            --eztx-text-main: #1F2937;
            --eztx-text-light: #6B7280;
            --eztx-bg-soft: #F9FAFB;
            --eztx-white: #FFFFFF;
            --eztx-glass: rgba(255, 255, 255, 0.8);
            --eztx-container-width: 1320px;
            --eztx-radius: 16px;
            --eztx-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.05);
        }

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

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

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

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

        .eztx-flex-item {
            min-width: 0;
        }

        .eztx-grid {
            display: grid;
            gap: 24px;
        }

        /* Typography */
        h1, h2, h3 {
            word-break: keep-all;
            white-space: normal;
            font-weight: 700;
        }

        p {
            word-break: break-word;
            overflow-wrap: break-word;
            line-height: 1.8;
        }

        /* Navigation */
        .eztx-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--eztx-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .eztx-nav-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

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

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

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

        .eztx-nav-link {
            text-decoration: none;
            color: var(--eztx-text-main);
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s ease;
            font-weight: 500;
        }

        .eztx-nav-link:hover {
            color: var(--eztx-primary);
            background: rgba(212, 50, 33, 0.05);
        }

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

        /* Hero Section - Abstract Fluid Background */
        .eztx-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at 80% 20%, rgba(30, 80, 162, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(212, 50, 33, 0.03) 0%, transparent 40%);
            text-align: center;
            position: relative;
        }

        .eztx-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #111827 0%, #374151 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .eztx-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--eztx-text-light);
            max-width: 800px;
            margin: 0 auto 48px;
        }

        /* Download Dashboard */
        .eztx-download-hub {
            background: var(--eztx-white);
            border-radius: var(--eztx-radius);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
            padding: 40px;
            margin-top: -20px;
            border: 1px solid rgba(0, 0, 0, 0.03);
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }

        .eztx-dl-card {
            padding: 24px;
            border-radius: 12px;
            background: var(--eztx-bg-soft);
            transition: transform 0.3s ease;
            text-align: left;
        }

        .eztx-dl-card:hover {
            transform: translateY(-5px);
            background: #fff;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .eztx-dl-icon-box {
            width: 48px;
            height: 48px;
            background: var(--eztx-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }

        .eztx-dl-card h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        .eztx-dl-card p {
            font-size: 0.9rem;
            color: var(--eztx-text-light);
            margin-bottom: 20px;
        }

        .eztx-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

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

        .eztx-btn-primary:hover {
            background: #b32a1b;
            box-shadow: 0 8px 15px rgba(212, 50, 33, 0.2);
        }

        .eztx-btn-outline {
            border: 1px solid #E5E7EB;
            color: var(--eztx-text-main);
            background: var(--eztx-white);
        }

        .eztx-btn-outline:hover {
            border-color: var(--eztx-primary);
            color: var(--eztx-primary);
        }

        /* Engine Capability Section */
        .eztx-section {
            padding: 96px 0;
        }

        .eztx-section-header {
            max-width: 700px;
            margin-bottom: 64px;
        }

        .eztx-section-tag {
            color: var(--eztx-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 0.85rem;
            margin-bottom: 12px;
            display: block;
        }

        .eztx-engine-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 40px;
        }

        .eztx-engine-card {
            background: var(--eztx-bg-soft);
            border-radius: 24px;
            padding: 48px;
            position: relative;
            overflow: hidden;
            border: 1px solid transparent;
            transition: all 0.4s ease;
        }

        .eztx-engine-card:hover {
            background: var(--eztx-white);
            border-color: var(--eztx-secondary);
            box-shadow: 0 30px 60px -12px rgba(30, 80, 162, 0.1);
        }

        .eztx-engine-id {
            font-family: monospace;
            font-size: 0.8rem;
            color: var(--eztx-secondary);
            margin-bottom: 16px;
            display: block;
            opacity: 0.7;
        }

        .eztx-engine-title {
            font-size: 1.75rem;
            margin-bottom: 20px;
        }

        .eztx-engine-highlight {
            color: var(--eztx-text-light);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        .eztx-engine-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            padding-top: 24px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
        }

        .eztx-metric-item {
            flex: 1;
            min-width: 120px;
        }

        .eztx-metric-value {
            display: block;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--eztx-secondary);
        }

        .eztx-metric-label {
            font-size: 0.8rem;
            color: var(--eztx-text-light);
        }

        .eztx-security-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .eztx-tag {
            background: rgba(30, 80, 162, 0.08);
            color: var(--eztx-secondary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* Footer */
        .eztx-footer {
            background: #111827;
            color: #9CA3AF;
            padding: 80px 0 40px;
        }

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

        .eztx-footer-brand h2 {
            color: var(--eztx-white);
            font-size: 1.25rem;
            margin-bottom: 20px;
        }

        .eztx-footer-title {
            color: var(--eztx-white);
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .eztx-footer-links {
            list-style: none;
        }

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

        .eztx-footer-links a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color 0.2s;
            font-size: 0.9rem;
        }

        .eztx-footer-links a:hover {
            color: var(--eztx-white);
        }

        .eztx-copyright {
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.85rem;
        }

        /* Tablet Responsive */
        @media (max-width: 1024px) {
            .eztx-engine-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Mobile Responsive */
        @media (max-width: 768px) {
            .eztx-nav-menu {
                display: none; /* In a real site, implement a burger menu */
            }
            
            .eztx-hero {
                padding: 120px 0 64px;
            }

            .eztx-download-hub {
                grid-template-columns: 1fr;
                padding: 24px;
            }

            .eztx-engine-card {
                padding: 32px;
            }

            .eztx-footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }