/* Base Reset */
        :root {
            --zfrc1y-primary: #6366F1;
            --zfrc1y-primary-dark: #4F46E5;
            --zfrc1y-secondary: #F97316;
            --zfrc1y-bg: #F8FAFC;
            --zfrc1y-text-main: #1E293B;
            --zfrc1y-text-muted: #64748B;
            --zfrc1y-white: #ffffff;
            --zfrc1y-spacing-unit: 8px;
            --zfrc1y-container-width: 1140px;
            --zfrc1y-radius: 16px;
            --zfrc1y-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            background-color: var(--zfrc1y-bg);
            color: var(--zfrc1y-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Typography */
        h1, h2, h3, h4 {
            line-height: 1.2;
            margin-bottom: calc(var(--zfrc1y-spacing-unit) * 2);
            color: var(--zfrc1y-text-main);
            white-space: normal;
        }

        h1 { font-size: clamp(2rem, 5vw + 1rem, 3.5rem); font-weight: 800; }
        h2 { font-size: clamp(1.5rem, 3vw + 1rem, 2.25rem); font-weight: 700; text-align: center; margin-bottom: 48px; }
        p { font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem); line-height: 1.8; margin-bottom: 1.5rem; word-break: keep-all; }

        /* Navigation */
        .zfrc1y-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .zfrc1y-nav-container {
            max-width: var(--zfrc1y-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .zfrc1y-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .zfrc1y-logo img {
            height: 42px;
            width: auto;
            border-radius: 8px;
        }

        .zfrc1y-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 12px;
            min-width: 0;
        }

        .zfrc1y-nav-menu a {
            text-decoration: none;
            color: var(--zfrc1y-text-muted);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s ease;
            font-size: 0.95rem;
        }

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

        .zfrc1y-nav-menu a.zfrc1y-active {
            color: var(--zfrc1y-primary);
            background: rgba(99, 102, 241, 0.1);
        }

        /* Hero Section - Unique Center Focus */
        .zfrc1y-hero {
            padding: 160px 24px 96px;
            background: linear-gradient(135deg, #EEF2FF 0%, #FFFFFF 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .zfrc1y-hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .zfrc1y-hero-badge {
            display: inline-block;
            background: var(--zfrc1y-primary);
            color: white;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 24px;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
        }

        .zfrc1y-hero-subtitle {
            color: var(--zfrc1y-text-muted);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        /* Download Box Section */
        .zfrc1y-download-section {
            padding: 64px 24px;
            margin-top: -60px;
            position: relative;
            z-index: 5;
        }

        .zfrc1y-download-card {
            max-width: var(--zfrc1y-container-width);
            margin: 0 auto;
            background: var(--zfrc1y-white);
            border-radius: 24px;
            display: flex;
            flex-wrap: wrap;
            overflow: hidden;
            box-shadow: var(--zfrc1y-shadow);
        }

        .zfrc1y-download-visual {
            flex: 1;
            min-width: 300px;
            background: url('images/download_box.jpg') center/cover no-repeat;
            min-height: 400px;
            position: relative;
        }

        .zfrc1y-download-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.1));
        }

        .zfrc1y-download-options {
            flex: 1.2;
            min-width: 320px;
            padding: 64px;
            background: var(--zfrc1y-white);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .zfrc1y-version-tag {
            color: var(--zfrc1y-primary);
            font-weight: 700;
            margin-bottom: 8px;
            display: block;
        }

        .zfrc1y-main-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(to right, var(--zfrc1y-primary), var(--zfrc1y-primary-dark));
            color: white;
            padding: 20px 40px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 24px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.4);
        }

        .zfrc1y-main-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px -5px rgba(99, 102, 241, 0.5);
        }

        .zfrc1y-secondary-downloads {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 24px;
        }

        .zfrc1y-alt-btn {
            flex: 1;
            min-width: 140px;
            padding: 12px 20px;
            border: 1px solid #E2E8F0;
            border-radius: 8px;
            text-decoration: none;
            color: var(--zfrc1y-text-main);
            font-size: 0.875rem;
            text-align: center;
            font-weight: 600;
            transition: all 0.2s ease;
        }

        .zfrc1y-alt-btn:hover {
            border-color: var(--zfrc1y-primary);
            color: var(--zfrc1y-primary);
            background: rgba(99, 102, 241, 0.02);
        }

        /* Compatibility Section */
        .zfrc1y-compat-section {
            padding: 96px 24px;
            max-width: var(--zfrc1y-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .zfrc1y-compat-text {
            flex: 1;
            min-width: 300px;
        }

        .zfrc1y-compat-img {
            flex: 1;
            min-width: 300px;
            border-radius: var(--zfrc1y-radius);
            box-shadow: var(--zfrc1y-shadow);
            overflow: hidden;
        }

        .zfrc1y-compat-img img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Ecosystem Solutions - Grid */
        .zfrc1y-solutions {
            padding: 96px 24px;
            background: #1E293B;
            color: white;
        }

        .zfrc1y-solutions h2 { color: white; }

        .zfrc1y-grid {
            max-width: var(--zfrc1y-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .zfrc1y-solution-card {
            background: rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: var(--zfrc1y-radius);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: transform 0.3s ease;
        }

        .zfrc1y-solution-card:hover {
            transform: translateY(-8px);
            background: rgba(255, 255, 255, 0.08);
        }

        .zfrc1y-solution-icon {
            font-size: 2rem;
            margin-bottom: 24px;
            color: var(--zfrc1y-primary);
        }

        .zfrc1y-solution-card h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .zfrc1y-tool-tag {
            display: inline-block;
            margin-top: 20px;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--zfrc1y-secondary);
            font-weight: 700;
        }

        /* Info Section */
        .zfrc1y-info-section {
            padding: 96px 24px;
            max-width: 900px;
            margin: 0 auto;
        }

        .zfrc1y-info-block {
            margin-bottom: 64px;
        }

        .zfrc1y-info-block h3 {
            font-size: 1.75rem;
            position: relative;
            padding-left: 20px;
        }

        .zfrc1y-info-block h3::before {
            content: "";
            position: absolute;
            left: 0;
            top: 15%;
            height: 70%;
            width: 4px;
            background: var(--zfrc1y-primary);
            border-radius: 2px;
        }

        /* Footer */
        .zfrc1y-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 80px 24px 40px;
            text-align: center;
        }

        .zfrc1y-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: white;
            margin-bottom: 24px;
        }

        .zfrc1y-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px;
            margin-bottom: 48px;
        }

        .zfrc1y-footer-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: color 0.2s;
        }

        .zfrc1y-footer-links a:hover {
            color: white;
        }

        .zfrc1y-copyright {
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.05);
            font-size: 0.875rem;
        }

        /* Mobile Adjustments */
        @media (max-width: 768px) {
            .zfrc1y-nav-container { height: auto; padding: 16px 20px; }
            .zfrc1y-nav-menu { width: 100%; justify-content: center; margin-top: 16px; }
            .zfrc1y-hero { padding: 140px 20px 64px; }
            .zfrc1y-download-options { padding: 32px 24px; }
            .zfrc1y-download-visual { min-height: 250px; }
            .zfrc1y-compat-section { flex-direction: column; text-align: center; gap: 40px; }
            .zfrc1y-solution-card { padding: 24px; }
        }