:root {
            --r6tl-primary: #FF6C37;
            --r6tl-primary-dark: #E05216;
            --r6tl-secondary: #002D5E;
            --r6tl-accent: #00F2FE;
            --r6tl-bg: #F8F9FB;
            --r6tl-text: #212121;
            --r6tl-text-light: #666666;
            --r6tl-white: #FFFFFF;
            --r6tl-border: rgba(0, 45, 94, 0.08);
            --r6tl-container-width: 1300px;
            --r6tl-radius: 16px;
            --r6tl-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
            --r6tl-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--r6tl-bg);
            color: var(--r6tl-text);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Helpers */
        .r6tl-container {
            max-width: var(--r6tl-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .r6tl-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .r6tl-grid {
            display: grid;
            gap: 32px;
        }

        /* Typography */
        h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4rem); line-height: 1.1; margin-bottom: 24px; font-weight: 800; color: var(--r6tl-secondary); }
        h2 { font-size: clamp(1.8rem, 3vw + 0.5rem, 2.5rem); line-height: 1.2; margin-bottom: 32px; font-weight: 700; color: var(--r6tl-secondary); }
        h3 { font-size: clamp(1.2rem, 1.5vw + 0.2rem, 1.5rem); margin-bottom: 16px; font-weight: 600; }
        p { margin-bottom: 16px; color: var(--r6tl-text-light); word-break: keep-all; }

        /* Navigation */
        .r6tl-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--r6tl-border);
            transition: var(--r6tl-transition);
        }

        .r6tl-nav-wrapper {
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .r6tl-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .r6tl-logo img {
            height: 36px;
            display: block;
        }

        .r6tl-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .r6tl-nav-item a {
            text-decoration: none;
            color: var(--r6tl-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: var(--r6tl-transition);
        }

        .r6tl-nav-item a:hover {
            background: rgba(255, 108, 55, 0.08);
            color: var(--r6tl-primary);
        }

        .r6tl-nav-item.r6tl-active a {
            background: var(--r6tl-primary);
            color: var(--r6tl-white);
        }

        /* Hero Section - Asymmetric Layout */
        .r6tl-hero {
            padding: 180px 0 100px;
            background: radial-gradient(circle at 90% 10%, rgba(255, 108, 55, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(0, 242, 254, 0.05) 0%, transparent 40%);
        }

        .r6tl-hero-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .r6tl-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .r6tl-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 108, 55, 0.1);
            color: var(--r6tl-primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .r6tl-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        .r6tl-floating-card {
            background: var(--r6tl-white);
            padding: 40px;
            border-radius: var(--r6tl-radius);
            box-shadow: 0 30px 60px -12px rgba(0, 45, 94, 0.12);
            border: 1px solid var(--r6tl-border);
            position: relative;
            z-index: 2;
        }

        .r6tl-hero-decoration {
            position: absolute;
            top: -20px;
            right: -20px;
            width: 100%;
            height: 100%;
            background: var(--r6tl-primary);
            border-radius: var(--r6tl-radius);
            z-index: 1;
            opacity: 0.1;
        }

        /* Action Buttons */
        .r6tl-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
        }

        .r6tl-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--r6tl-transition);
            cursor: pointer;
            border: none;
        }

        .r6tl-btn-primary {
            background: linear-gradient(135deg, var(--r6tl-primary), var(--r6tl-primary-dark));
            color: var(--r6tl-white);
            box-shadow: 0 8px 20px -6px rgba(255, 108, 55, 0.4);
        }

        .r6tl-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 24px -6px rgba(255, 108, 55, 0.5);
        }

        .r6tl-btn-outline {
            background: transparent;
            border: 2px solid var(--r6tl-secondary);
            color: var(--r6tl-secondary);
        }

        .r6tl-btn-outline:hover {
            background: var(--r6tl-secondary);
            color: var(--r6tl-white);
        }

        /* Matrix Section - 3 Columns */
        .r6tl-matrix-section {
            padding: 100px 0;
            background: var(--r6tl-white);
        }

        .r6tl-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .r6tl-matrix-card {
            padding: 48px;
            border-radius: var(--r6tl-radius);
            background: var(--r6tl-bg);
            border: 1px solid transparent;
            transition: var(--r6tl-transition);
        }

        .r6tl-matrix-card:hover {
            border-color: var(--r6tl-accent);
            background: var(--r6tl-white);
            box-shadow: var(--r6tl-shadow);
            transform: translateY(-8px);
        }

        .r6tl-stage-label {
            font-size: 12px;
            font-weight: 800;
            color: var(--r6tl-primary);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .r6tl-methodology {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--r6tl-secondary);
        }

        .r6tl-tool-list {
            list-style: none;
        }

        .r6tl-tool-item {
            margin-bottom: 20px;
            padding-left: 24px;
            position: relative;
        }

        .r6tl-tool-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 2px;
            background: var(--r6tl-accent);
        }

        .r6tl-tool-title {
            display: block;
            font-weight: 600;
            font-size: 14px;
            color: var(--r6tl-secondary);
            margin-bottom: 4px;
        }

        .r6tl-tool-desc {
            font-size: 13px;
            color: var(--r6tl-text-light);
            line-height: 1.5;
        }

        /* Download Zone */
        .r6tl-download-zone {
            padding: 100px 0;
        }

        .r6tl-download-card {
            background: var(--r6tl-secondary);
            border-radius: 32px;
            padding: 80px 40px;
            text-align: center;
            color: var(--r6tl-white);
            position: relative;
            overflow: hidden;
        }

        .r6tl-download-card h2 { color: var(--r6tl-white); }
        .r6tl-download-card p { color: rgba(255, 255, 255, 0.7); max-width: 600px; margin: 0 auto 40px; }

        .r6tl-os-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
        }

        .r6tl-os-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 40px;
            border-radius: 20px;
            cursor: pointer;
            transition: var(--r6tl-transition);
            min-width: 180px;
        }

        .r6tl-os-item:hover {
            background: var(--r6tl-white);
            color: var(--r6tl-secondary);
            transform: scale(1.05);
        }

        .r6tl-os-name {
            font-weight: 700;
            display: block;
            margin-bottom: 4px;
        }

        .r6tl-os-ver {
            font-size: 12px;
            opacity: 0.6;
        }

        /* Footer */
        .r6tl-footer {
            padding: 80px 0 40px;
            background: var(--r6tl-bg);
            border-top: 1px solid var(--r6tl-border);
        }

        .r6tl-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 60px;
        }

        .r6tl-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .r6tl-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--r6tl-secondary);
            margin-bottom: 16px;
        }

        .r6tl-footer-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            flex: 1;
            min-width: 280px;
        }

        .r6tl-footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--r6tl-secondary);
            text-transform: uppercase;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .r6tl-footer-col ul {
            list-style: none;
        }

        .r6tl-footer-col li {
            margin-bottom: 12px;
        }

        .r6tl-footer-col a {
            text-decoration: none;
            color: var(--r6tl-text-light);
            font-size: 14px;
            transition: var(--r6tl-transition);
        }

        .r6tl-footer-col a:hover {
            color: var(--r6tl-primary);
        }

        .r6tl-copyright {
            padding-top: 32px;
            border-top: 1px solid var(--r6tl-border);
            text-align: center;
            font-size: 13px;
            color: var(--r6tl-text-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .r6tl-nav-menu {
                display: none; /* Simplification for desktop-first top-level creative */
            }
            .r6tl-nav-wrapper {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .r6tl-hero { padding: 120px 0 60px; }
            .r6tl-hero-inner { text-align: center; }
            .r6tl-btn-group { justify-content: center; }
            .r6tl-matrix-card { padding: 32px; }
            .r6tl-download-card { padding: 40px 20px; }
        }