:root {
            --zfrc1y-primary: #6366F1;
            --zfrc1y-primary-dark: #4F46E5;
            --zfrc1y-bg: #F8FAFC;
            --zfrc1y-text: #1E293B;
            --zfrc1y-text-light: #64748B;
            --zfrc1y-white: #FFFFFF;
            --zfrc1y-border: #E2E8F0;
            --zfrc1y-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --zfrc1y-radius: 12px;
            --zfrc1y-spacing-unit: 8px;
        }

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

        body {
            font-family: "Inter", "Microsoft YaHei", sans-serif;
            background-color: var(--zfrc1y-bg);
            color: var(--zfrc1y-text);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Fluid Typography */
        h1 { font-size: clamp(2rem, 5vw + 1rem, 3.5rem); line-height: 1.2; font-weight: 800; }
        h2 { font-size: clamp(1.5rem, 3vw + 0.5rem, 2.25rem); font-weight: 700; margin-bottom: 24px; }
        p { font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem); line-height: 1.8; }

        .zfrc1y-container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .zfrc1y-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .zfrc1y-flex-item {
            min-width: 0;
        }

        .zfrc1y-text-wrap {
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* Navigation */
        .zfrc1y-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--zfrc1y-border);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .zfrc1y-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .zfrc1y-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .zfrc1y-menu {
            display: flex;
            list-style: none;
            gap: 16px;
        }

        .zfrc1y-menu-link {
            text-decoration: none;
            color: var(--zfrc1y-text);
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.2s ease;
            font-size: 0.95rem;
        }

        .zfrc1y-menu-link:hover {
            color: var(--zfrc1y-primary);
            background: rgba(99, 102, 241, 0.05);
        }

        .zfrc1y-menu-link.active {
            color: var(--zfrc1y-white);
            background: var(--zfrc1y-primary);
        }

        /* Hero Section - Unique Card Style */
        .zfrc1y-hero {
            padding: 160px 0 80px;
            background: radial-gradient(circle at top right, #EEF2FF 0%, transparent 40%);
        }

        .zfrc1y-hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .zfrc1y-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--zfrc1y-primary);
            border-radius: 100px;
            font-weight: 600;
            margin-bottom: 24px;
            font-size: 0.9rem;
        }

        .zfrc1y-hero-subtitle {
            color: var(--zfrc1y-text-light);
            margin-top: 24px;
            margin-bottom: 48px;
        }

        /* Download Grid */
        .zfrc1y-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 64px;
        }

        .zfrc1y-download-card {
            background: var(--zfrc1y-white);
            border: 1px solid var(--zfrc1y-border);
            border-radius: var(--zfrc1y-radius);
            padding: 40px;
            text-align: left;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .zfrc1y-download-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            border-color: var(--zfrc1y-primary);
        }

        .zfrc1y-card-version {
            font-size: 0.85rem;
            color: var(--zfrc1y-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .zfrc1y-card-title {
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .zfrc1y-card-info {
            color: var(--zfrc1y-text-light);
            font-size: 0.95rem;
            margin-bottom: 32px;
        }

        .zfrc1y-btn-download {
            display: inline-block;
            background: var(--zfrc1y-primary);
            color: var(--zfrc1y-white);
            text-decoration: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-align: center;
            transition: background 0.2s ease;
        }

        .zfrc1y-btn-download:hover {
            background: var(--zfrc1y-primary-dark);
        }

        .zfrc1y-btn-secondary {
            background: #F1F5F9;
            color: var(--zfrc1y-text);
        }

        /* Features/Solutions Section */
        .zfrc1y-section {
            padding: 96px 0;
        }

        .zfrc1y-section-alt {
            background: var(--zfrc1y-white);
        }

        .zfrc1y-solution-item {
            flex: 1;
            min-width: 300px;
            padding: 32px;
            border-radius: var(--zfrc1y-radius);
            background: var(--zfrc1y-bg);
            margin: 12px;
        }

        .zfrc1y-solution-tag {
            font-weight: 700;
            color: var(--zfrc1y-primary);
            margin-bottom: 12px;
            display: block;
        }

        .zfrc1y-solution-detail {
            font-size: 1rem;
            color: var(--zfrc1y-text-light);
        }

        /* Footer */
        .zfrc1y-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 80px 0 40px;
        }

        .zfrc1y-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 64px;
        }

        .zfrc1y-footer-brand h3 {
            color: var(--zfrc1y-white);
            margin-bottom: 16px;
            font-size: 1.5rem;
        }

        .zfrc1y-footer-links h4 {
            color: var(--zfrc1y-white);
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .zfrc1y-footer-links ul {
            list-style: none;
        }

        .zfrc1y-footer-links li {
            margin-bottom: 12px;
        }

        .zfrc1y-footer-links a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .zfrc1y-footer-links a:hover {
            color: var(--zfrc1y-primary);
        }

        .zfrc1y-footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 32px;
            text-align: center;
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .zfrc1y-menu {
                display: none; /* In a real project, implement a mobile toggle */
            }
            .zfrc1y-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .zfrc1y-download-grid {
                grid-template-columns: 1fr;
            }
            .zfrc1y-footer-grid {
                grid-template-columns: 1fr;
            }
            .zfrc1y-hero {
                padding: 120px 0 60px;
            }
        }