:root {
            --rg222-primary: #0052D9;
            --rg222-accent: #00F2FF;
            --rg222-bg-light: #F5F7FA;
            --rg222-text-dark: #1D1D1F;
            --rg222-text-gray: #424245;
            --rg222-white: #FFFFFF;
            --rg222-aurora-gradient: linear-gradient(135deg, #0052D9 0%, #00C6FF 50%, #00F2FF 100%);
            --rg222-card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --rg222-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            color: var(--rg222-text-dark);
            background-color: var(--rg222-white);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Typography */
        h1 { font-size: clamp(2rem, 5vw + 1rem, 3.5rem); line-height: 1.2; word-break: keep-all; font-weight: 700; }
        h2 { font-size: clamp(1.5rem, 3vw + 1rem, 2.5rem); margin-bottom: 24px; font-weight: 600; }
        p { font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem); color: var(--rg222-text-gray); line-height: 1.8; word-break: break-word; }

        /* Navigation */
        .rg222-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
        }

        .rg222-nav-container {
            max-width: var(--rg222-container-width);
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .rg222-logo {
            flex-shrink: 0;
            min-width: 0;
        }
        .rg222-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .rg222-nav-links {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .rg222-nav-links a {
            text-decoration: none;
            color: var(--rg222-text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .rg222-nav-links a:hover,
        .rg222-nav-links a.rg222-active {
            color: var(--rg222-primary);
        }

        /* Hero Section */
        .rg222-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at 90% 10%, rgba(0, 82, 217, 0.05) 0%, transparent 40%);
            text-align: center;
            position: relative;
        }

        .rg222-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .rg222-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 82, 217, 0.1);
            color: var(--rg222-primary);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .rg222-hero-subtitle {
            margin: 32px auto;
            max-width: 600px;
        }

        .rg222-hero-image-wrap {
            margin-top: 64px;
            position: relative;
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 40px 80px rgba(0,0,0,0.12);
        }

        .rg222-hero-image-wrap img {
            width: 100%;
            height: auto;
            display: block;
            transform: scale(1.01);
        }

        /* Features Grid */
        .rg222-section {
            padding: 96px 24px;
            max-width: var(--rg222-container-width);
            margin: 0 auto;
        }

        .rg222-grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .rg222-feature-card {
            background: var(--rg222-bg-light);
            border-radius: 24px;
            padding: 48px 32px;
            transition: transform 0.3s ease, background 0.3s ease;
            border: 1px solid transparent;
        }

        .rg222-feature-card:hover {
            transform: translateY(-8px);
            background: var(--rg222-white);
            border-color: rgba(0, 82, 217, 0.1);
            box-shadow: var(--rg222-card-shadow);
        }

        .rg222-module-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--rg222-primary);
        }

        .rg222-feature-list {
            list-style: none;
            margin-top: 24px;
        }

        .rg222-feature-list li {
            font-size: 14px;
            margin-bottom: 12px;
            position: relative;
            padding-left: 20px;
            color: var(--rg222-text-gray);
        }

        .rg222-feature-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--rg222-primary);
            font-weight: bold;
        }

        /* Split Section */
        .rg222-split-section {
            display: flex;
            align-items: center;
            gap: 64px;
            padding: 96px 24px;
            max-width: var(--rg222-container-width);
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .rg222-split-text {
            flex: 1;
            min-width: 300px;
        }

        .rg222-split-image {
            flex: 1.2;
            min-width: 300px;
            border-radius: 32px;
            overflow: hidden;
            box-shadow: var(--rg222-card-shadow);
        }

        .rg222-split-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* CTA Section */
        .rg222-cta {
            background: var(--rg222-text-dark);
            color: var(--rg222-white);
            padding: 80px 24px;
            text-align: center;
            border-radius: 40px;
            margin: 64px 24px;
            position: relative;
            overflow: hidden;
        }

        .rg222-cta h2 { color: var(--rg222-white); }

        .rg222-btn {
            display: inline-block;
            padding: 16px 48px;
            background: var(--rg222-aurora-gradient);
            color: white;
            text-decoration: none;
            border-radius: 100px;
            font-weight: 600;
            margin-top: 32px;
            transition: opacity 0.3s ease;
        }

        .rg222-btn:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }

        /* Footer */
        .rg222-footer {
            background: var(--rg222-bg-light);
            padding: 64px 24px 32px;
            margin-top: 96px;
        }

        .rg222-footer-content {
            max-width: var(--rg222-container-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 48px;
        }

        .rg222-footer-brand {
            flex: 1.5;
            min-width: 200px;
        }

        .rg222-footer-brand-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--rg222-primary);
        }

        .rg222-footer-links {
            flex: 2;
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }

        .rg222-footer-column {
            min-width: 120px;
        }

        .rg222-footer-column h4 {
            font-size: 14px;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .rg222-footer-column a {
            display: block;
            text-decoration: none;
            color: var(--rg222-text-gray);
            font-size: 14px;
            margin-bottom: 12px;
        }

        .rg222-footer-bottom {
            max-width: var(--rg222-container-width);
            margin: 48px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            font-size: 12px;
            color: #999;
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .rg222-nav-links {
                display: none; /* In real product, a mobile menu would be here */
            }
            .rg222-split-section {
                flex-direction: column;
                text-align: center;
            }
            .rg222-grid-3 {
                grid-template-columns: 1fr;
            }
        }