:root {
            --r6tl-primary: #FF6C37;
            --r6tl-secondary: #00F2FE;
            --r6tl-dark: #1C272B;
            --r6tl-bg-light: #F8FAFB;
            --r6tl-text-main: #282828;
            --r6tl-text-muted: #5C5C5C;
            --r6tl-white: #FFFFFF;
            --r6tl-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --r6tl-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --r6tl-max-width: 1320px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--r6tl-text-main);
            background-color: var(--r6tl-bg-light);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

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

        h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 24px; }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 32px; }
        p { font-size: clamp(1rem, 2vw + 0.1rem, 1.125rem); line-height: 1.8; margin-bottom: 16px; overflow-wrap: break-word; }

        /* Navigation */
        .r6tl-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            padding: 0 24px;
        }

        .r6tl-nav-container {
            max-width: var(--r6tl-max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

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

        .r6tl-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .r6tl-nav-menu {
            display: flex;
            list-style: none;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .r6tl-nav-link {
            text-decoration: none;
            color: var(--r6tl-text-main);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--r6tl-transition);
        }

        .r6tl-nav-link:hover {
            color: var(--r6tl-primary);
            background: rgba(255, 108, 55, 0.05);
        }

        .r6tl-nav-link.active {
            color: var(--r6tl-primary);
            font-weight: 700;
        }

        /* Hero Section - Download Focus */
        .r6tl-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at top right, rgba(255, 108, 55, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(0, 242, 254, 0.05), transparent);
            text-align: center;
        }

        .r6tl-hero-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .r6tl-badge {
            display: inline-block;
            background: var(--r6tl-primary);
            color: var(--r6tl-white);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .r6tl-hero-subtitle {
            color: var(--r6tl-text-muted);
            margin-bottom: 48px;
        }

        /* Platform Grid */
        .r6tl-platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            max-width: var(--r6tl-max-width);
            margin: 0 auto 64px;
            padding: 0 24px;
        }

        .r6tl-platform-card {
            background: var(--r6tl-white);
            padding: 48px 32px;
            border-radius: 24px;
            box-shadow: var(--r6tl-shadow);
            transition: var(--r6tl-transition);
            text-align: center;
            border: 1px solid rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
            align-items: center;
            min-width: 0;
        }

        .r6tl-platform-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
            border-color: var(--r6tl-secondary);
        }

        .r6tl-os-icon {
            width: 64px;
            height: 64px;
            background: var(--r6tl-bg-light);
            border-radius: 16px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            font-weight: bold;
            color: var(--r6tl-primary);
        }

        .r6tl-btn-download {
            display: inline-block;
            padding: 14px 32px;
            background: var(--r6tl-primary);
            color: var(--r6tl-white);
            text-decoration: none;
            border-radius: 12px;
            font-weight: 600;
            margin-top: 24px;
            transition: var(--r6tl-transition);
            width: 100%;
        }

        .r6tl-btn-download:hover {
            background: #e85a2a;
            box-shadow: 0 4px 15px rgba(255, 108, 55, 0.3);
        }

        .r6tl-version-info {
            font-size: 13px;
            color: var(--r6tl-text-muted);
            margin-top: 12px;
        }

        /* Orchestration Matrix Section */
        .r6tl-matrix-section {
            padding: 96px 24px;
            background-color: var(--r6tl-dark);
            color: var(--r6tl-white);
        }

        .r6tl-matrix-header {
            max-width: 800px;
            margin: 0 auto 64px;
            text-align: center;
        }

        .r6tl-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            max-width: var(--r6tl-max-width);
            margin: 0 auto;
        }

        .r6tl-matrix-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 40px;
            border-radius: 20px;
            min-width: 0;
        }

        .r6tl-matrix-stage {
            color: var(--r6tl-secondary);
            font-weight: 700;
            text-transform: uppercase;
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: 8px;
            display: block;
        }

        .r6tl-matrix-method {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
            display: block;
        }

        .r6tl-tool-item {
            margin-bottom: 20px;
            padding-left: 16px;
            border-left: 2px solid var(--r6tl-primary);
        }

        .r6tl-tool-name {
            font-weight: 600;
            color: var(--r6tl-white);
            display: block;
            margin-bottom: 4px;
        }

        .r6tl-tool-desc {
            font-size: 14px;
            color: #A0AEC0;
        }

        /* Dynamic Content Section */
        .r6tl-news-section {
            padding: 96px 24px;
            max-width: var(--r6tl-max-width);
            margin: 0 auto;
        }

        .r6tl-news-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .r6tl-news-item {
            flex: 1;
            min-width: 300px;
            background: var(--r6tl-white);
            padding: 32px;
            border-radius: 16px;
            box-shadow: var(--r6tl-shadow);
        }

        /* Footer */
        .r6tl-footer {
            background: #111;
            color: #999;
            padding: 80px 24px 40px;
        }

        .r6tl-footer-container {
            max-width: var(--r6tl-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

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

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

        .r6tl-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .r6tl-footer-group {
            min-width: 150px;
        }

        .r6tl-footer-title {
            color: var(--r6tl-white);
            font-weight: 700;
            margin-bottom: 24px;
            display: block;
        }

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

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

        .r6tl-footer-list a {
            color: #999;
            text-decoration: none;
            transition: var(--r6tl-transition);
        }

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

        .r6tl-footer-bottom {
            max-width: var(--r6tl-max-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid #222;
            text-align: center;
            font-size: 14px;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .r6tl-nav-menu {
                display: none; /* Simplification for small screen logic */
            }
            .r6tl-hero {
                padding: 120px 24px 64px;
            }
        }

        @media (max-width: 768px) {
            .r6tl-platform-grid, .r6tl-matrix-grid {
                grid-template-columns: 1fr;
            }
            .r6tl-footer-links {
                gap: 32px;
            }
        }