:root {
            --rh3o-primary: #1880C1;
            --rh3o-primary-dark: #0D47A1;
            --rh3o-accent: #00E5FF;
            --rh3o-bg-light: #F4F7F9;
            --rh3o-text-main: #2C3E50;
            --rh3o-text-muted: #5D6D7E;
            --rh3o-white: #FFFFFF;
            --rh3o-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --rh3o-radius: 16px;
            --rh3o-max-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--rh3o-text-main);
            background-color: var(--rh3o-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* Fluid Typography */
        h1 { font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.2; font-weight: 800; }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); line-height: 1.3; font-weight: 700; margin-bottom: 24px; }
        p { font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem); color: var(--rh3o-text-muted); }

        /* Navigation */
        .rh3o-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .rh3o-container {
            max-width: var(--rh3o-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .rh3o-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .rh3o-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .rh3o-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .rh3o-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 20px;
            min-width: 0;
        }

        .rh3o-menu a {
            text-decoration: none;
            color: var(--rh3o-text-main);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 4px;
            transition: color 0.3s;
            position: relative;
        }

        .rh3o-menu a:hover, .rh3o-menu a.active {
            color: var(--rh3o-primary);
        }

        .rh3o-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--rh3o-primary);
        }

        /* Hero Section - Unique Layered Layout */
        .rh3o-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #051E34 0%, #1880C1 100%);
            color: var(--rh3o-white);
            text-align: center;
            clip-path: ellipse(150% 100% at 50% 0%);
        }

        .rh3o-hero-content {
            max-width: 800px;
            margin: 0 auto;
            word-break: break-word;
        }

        .rh3o-hero-tagline {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            margin-bottom: 24px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .rh3o-hero h1 {
            margin-bottom: 24px;
            background: linear-gradient(to right, #fff, #81D4FA);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* Download Selection Area */
        .rh3o-download-hub {
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

        .rh3o-glass-card {
            background: var(--rh3o-white);
            border-radius: var(--rh3o-radius);
            box-shadow: 0 20px 50px rgba(0,0,0,0.1);
            padding: 48px;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .rh3o-download-visual {
            flex: 1;
            min-width: 320px;
        }

        .rh3o-download-visual img {
            width: 100%;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }

        .rh3o-download-visual img:hover {
            transform: scale(1.02);
        }

        .rh3o-download-options {
            flex: 1;
            min-width: 320px;
        }

        .rh3o-platform-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            margin-top: 32px;
        }

        .rh3o-btn-download {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 18px 24px;
            background: var(--rh3o-bg-light);
            border: 2px solid transparent;
            border-radius: 12px;
            text-decoration: none;
            color: var(--rh3o-text-main);
            font-weight: 600;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .rh3o-btn-download:hover {
            border-color: var(--rh3o-primary);
            background: var(--rh3o-white);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(24, 128, 193, 0.15);
            color: var(--rh3o-primary);
        }

        /* Security Section */
        .rh3o-section {
            padding: 96px 0;
        }

        .rh3o-flex-row {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
        }

        .rh3o-flex-item {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .rh3o-security-img {
            width: 100%;
            max-width: 450px;
            margin: 0 auto;
            display: block;
            border-radius: 24px;
            transform: rotate(-2deg);
        }

        /* Industry Deployment Matrix */
        .rh3o-deployment-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .rh3o-matrix-card {
            background: var(--rh3o-white);
            padding: 32px;
            border-radius: var(--rh3o-radius);
            border-bottom: 4px solid var(--rh3o-primary);
            transition: all 0.3s ease;
        }

        .rh3o-matrix-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--rh3o-shadow);
        }

        .rh3o-sector-label {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--rh3o-primary);
            text-transform: uppercase;
            margin-bottom: 12px;
            display: block;
        }

        .rh3o-matrix-title {
            font-size: 1.25rem;
            margin-bottom: 16px;
            color: var(--rh3o-text-main);
        }

        .rh3o-matrix-detail {
            font-size: 0.95rem;
            color: var(--rh3o-text-muted);
            margin-bottom: 20px;
        }

        .rh3o-matrix-tool {
            font-size: 0.85rem;
            padding: 4px 12px;
            background: #E3F2FD;
            border-radius: 4px;
            color: var(--rh3o-primary-dark);
            font-weight: 600;
        }

        /* Version History Section */
        .rh3o-history-section {
            background: var(--rh3o-white);
        }

        .rh3o-history-content {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            flex-direction: row-reverse;
            align-items: center;
        }

        .rh3o-history-image {
            flex: 1;
            min-width: 320px;
        }

        .rh3o-history-image img {
            width: 100%;
            border-radius: var(--rh3o-radius);
            filter: grayscale(20%);
        }

        /* Footer */
        .rh3o-footer {
            background: #051E34;
            color: rgba(255,255,255,0.8);
            padding: 80px 0 40px;
        }

        .rh3o-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .rh3o-footer-brand h3 {
            color: var(--rh3o-white);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .rh3o-footer-links h4 {
            color: var(--rh3o-white);
            margin-bottom: 24px;
        }

        .rh3o-footer-links ul {
            list-style: none;
        }

        .rh3o-footer-links li {
            margin-bottom: 12px;
        }

        .rh3o-footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: color 0.3s;
        }

        .rh3o-footer-links a:hover {
            color: var(--rh3o-accent);
        }

        .rh3o-footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 0.9rem;
        }

        /* Responsive Breakpoints */
        @media (max-width: 768px) {
            .rh3o-nav {
                height: auto;
                padding: 16px 0;
                justify-content: center;
            }
            .rh3o-menu {
                justify-content: center;
                margin-top: 16px;
                gap: 12px;
            }
            .rh3o-hero {
                padding: 120px 0 60px;
            }
            .rh3o-glass-card {
                padding: 32px 24px;
            }
            .rh3o-section {
                padding: 64px 0;
            }
        }