/* Base Reset & Variables */
        :root {
            --rh3o-primary: #1880C4;
            --rh3o-primary-dark: #12659c;
            --rh3o-accent: #00d4ff;
            --rh3o-bg-light: #f8fafc;
            --rh3o-text-main: #1e293b;
            --rh3o-text-muted: #64748b;
            --rh3o-white: #ffffff;
            --rh3o-card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
            --rh3o-glass: rgba(255, 255, 255, 0.85);
        }

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

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

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            word-break: keep-all;
            white-space: normal;
            font-weight: 800;
        }

        p {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem);
            margin-bottom: 1.5rem;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* Layout */
        .rh3o-container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .rh3o-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .rh3o-flex > * {
            min-width: 0;
        }

        /* Navigation */
        .rh3o-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--rh3o-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

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

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

        .rh3o-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .rh3o-menu-link {
            text-decoration: none;
            color: var(--rh3o-text-main);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .rh3o-menu-link:hover {
            color: var(--rh3o-primary);
            background: rgba(24, 128, 196, 0.05);
        }

        .rh3o-menu-link.rh3o-active {
            background: var(--rh3o-primary);
            color: var(--rh3o-white);
        }

        /* Hero Section - Unique Card Style */
        .rh3o-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, rgba(24, 128, 196, 0.08), transparent),
                        radial-gradient(circle at bottom left, rgba(0, 212, 255, 0.05), transparent);
            text-align: center;
        }

        .rh3o-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(24, 128, 196, 0.1);
            color: var(--rh3o-primary);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.875rem;
            margin-bottom: 24px;
        }

        .rh3o-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            color: var(--rh3o-text-main);
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .rh3o-hero-subtitle {
            max-width: 800px;
            margin: 0 auto 48px;
            color: var(--rh3o-text-muted);
        }

        /* Download Section Grid */
        .rh3o-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: -48px;
            position: relative;
            z-index: 10;
        }

        .rh3o-dl-card {
            background: var(--rh3o-white);
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--rh3o-card-shadow);
            border: 1px solid rgba(0,0,0,0.03);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .rh3o-dl-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
        }

        .rh3o-dl-icon {
            width: 64px;
            height: 64px;
            background: var(--rh3o-bg-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 2rem;
            font-weight: bold;
            color: var(--rh3o-primary);
        }

        .rh3o-dl-name {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }

        .rh3o-dl-version {
            color: var(--rh3o-text-muted);
            font-size: 0.9rem;
            margin-bottom: 24px;
            display: block;
        }

        .rh3o-dl-btn {
            display: inline-block;
            width: 100%;
            padding: 16px;
            background: var(--rh3o-primary);
            color: var(--rh3o-white);
            text-align: center;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 600;
            transition: background 0.2s;
        }

        .rh3o-dl-btn:hover {
            background: var(--rh3o-primary-dark);
        }

        /* Industry Matrix Section */
        .rh3o-matrix-section {
            padding: 120px 0;
            background: #062035;
            color: var(--rh3o-white);
            border-radius: 64px 64px 0 0;
            margin-top: 96px;
        }

        .rh3o-matrix-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .rh3o-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .rh3o-matrix-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 32px;
            border-radius: 24px;
            backdrop-filter: blur(5px);
        }

        .rh3o-matrix-sector {
            color: var(--rh3o-accent);
            text-transform: uppercase;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            margin-bottom: 16px;
            display: block;
        }

        .rh3o-matrix-usecase {
            font-size: 1.25rem;
            margin-bottom: 16px;
        }

        .rh3o-matrix-strategy {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }

        .rh3o-matrix-tool {
            background: rgba(0, 212, 255, 0.1);
            color: var(--rh3o-accent);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
            display: inline-block;
        }

        /* Feature Section - Image and Text */
        .rh3o-feature-block {
            padding: 96px 0;
        }

        .rh3o-feature-row {
            display: flex;
            align-items: center;
            gap: 64px;
            margin-bottom: 80px;
        }

        .rh3o-feature-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .rh3o-feature-content {
            flex: 1;
        }

        .rh3o-feature-visual {
            flex: 1;
            background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
            height: 400px;
            border-radius: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            box-shadow: inset 0 0 50px rgba(0,0,0,0.05);
        }

        /* Dynamic Content Section */
        .rh3o-news-section {
            padding: 80px 0;
            background: var(--rh3o-white);
        }

        /* Footer */
        .rh3o-footer {
            background: #020617;
            color: var(--rh3o-white);
            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 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--rh3o-white);
            margin-bottom: 16px;
        }

        .rh3o-footer-title {
            font-size: 1.125rem;
            margin-bottom: 24px;
            color: var(--rh3o-white);
        }

        .rh3o-footer-links {
            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 0.2s;
        }

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

        .rh3o-copyright {
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.875rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .rh3o-feature-row {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .rh3o-nav-inner {
                flex-direction: column;
                height: auto;
                padding: 16px 0;
            }
            .rh3o-menu {
                margin-top: 16px;
                justify-content: center;
            }
            .rh3o-hero {
                padding-top: 180px;
            }
            .rh3o-feature-row, .rh3o-feature-row:nth-child(even) {
                flex-direction: column;
            }
            .rh3o-feature-visual {
                width: 100%;
                height: 300px;
            }
        }