:root {
            --r6tl-primary: #FF6C37;
            --r6tl-secondary: #212121;
            --r6tl-accent: #00F2FE;
            --r6tl-bg: #FDFDFD;
            --r6tl-text: #1C1C1C;
            --r6tl-muted: #666666;
            --r6tl-border: rgba(0, 0, 0, 0.08);
            --r6tl-radius: 16px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--r6tl-text);
            background-color: var(--r6tl-bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .r6tl-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
        }

        @media (max-width: 768px) {
            .r6tl-container {
                padding: 0 20px;
            }
        }

        /* 导航栏 */
        .r6tl-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--r6tl-border);
            transition: all 0.3s ease;
        }

        .r6tl-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            min-width: 0;
        }

        .r6tl-logo {
            flex: 0 0 auto;
            display: flex;
            align-items: center;
        }

        .r6tl-logo img {
            height: 32px;
            width: auto;
        }

        .r6tl-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 4px;
            min-width: 0;
        }

        .r6tl-menu li {
            min-width: 0;
        }

        .r6tl-menu a {
            text-decoration: none;
            color: var(--r6tl-muted);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

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

        .r6tl-menu a.active {
            color: var(--r6tl-primary);
            background: rgba(255, 108, 55, 0.1);
        }

        /* 移动端菜单适配 */
        @media (max-width: 1024px) {
            .r6tl-menu {
                display: none; /* 简化处理，实际可增加汉堡菜单 */
            }
        }

        /* Hero 区块 - 独特非对称布局 */
        .r6tl-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(0, 242, 254, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(255, 108, 55, 0.05) 0%, transparent 40%);
            position: relative;
            overflow: hidden;
        }

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

        .r6tl-hero-text {
            flex: 1 1 500px;
            min-width: 0;
            word-break: break-word;
        }

        .r6tl-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            position: relative;
        }

        .r6tl-hero-title {
            font-size: clamp(2.5rem, 4vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--r6tl-secondary);
            word-break: keep-all;
        }

        .r6tl-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw, 1.35rem);
            color: var(--r6tl-muted);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.8;
        }

        .r6tl-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .r6tl-btn-primary {
            background: var(--r6tl-primary);
            color: white;
            padding: 16px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 8px 24px rgba(255, 108, 55, 0.25);
        }

        .r6tl-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 108, 55, 0.35);
        }

        /* 模拟界面装饰 */
        .r6tl-mock-ui {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--r6tl-border);
            box-shadow: 0 40px 80px rgba(0,0,0,0.1);
            padding: 24px;
            transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
        }

        .r6tl-ui-dots {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
        }

        .r6tl-ui-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #eee;
        }

        .r6tl-ui-line {
            height: 10px;
            background: #f0f0f0;
            margin-bottom: 12px;
            border-radius: 5px;
        }

        .r6tl-ui-line.short { width: 40%; }
        .r6tl-ui-line.mid { width: 70%; }
        .r6tl-ui-line.accent { background: var(--r6tl-accent); opacity: 0.3; }

        /* 核心特性矩阵 */
        .r6tl-section {
            padding: 96px 0;
            border-top: 1px solid var(--r6tl-border);
        }

        .r6tl-section-header {
            text-align: center;
            margin-bottom: 64px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .r6tl-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 242, 254, 0.1);
            color: #009ead;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        .r6tl-matrix-card {
            background: white;
            padding: 40px;
            border-radius: var(--r6tl-radius);
            border: 1px solid var(--r6tl-border);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .r6tl-matrix-card:hover {
            transform: translateY(-8px);
            border-color: var(--r6tl-primary);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        .r6tl-matrix-stage {
            font-size: 14px;
            color: var(--r6tl-primary);
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        .r6tl-tooling-item {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px dashed var(--r6tl-border);
        }

        .r6tl-tooling-label {
            display: block;
            font-weight: 600;
            font-size: 15px;
            margin-bottom: 4px;
        }

        .r6tl-tooling-desc {
            font-size: 14px;
            color: var(--r6tl-muted);
        }

        /* 视觉引导区块 */
        .r6tl-feature-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 80px;
            margin-top: 64px;
        }

        .r6tl-feature-visual-alt {
            flex: 1 1 450px;
            min-width: 0;
            background: var(--r6tl-secondary);
            border-radius: 24px;
            padding: 48px;
            color: white;
            position: relative;
        }

        .r6tl-code-block {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            font-size: 14px;
            line-height: 1.6;
        }

        .r6tl-code-accent { color: var(--r6tl-accent); }
        .r6tl-code-primary { color: var(--r6tl-primary); }

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

        .r6tl-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .r6tl-footer-brand {
            grid-column: span 2;
        }

        @media (max-width: 768px) {
            .r6tl-footer-brand { grid-column: span 1; }
        }

        .r6tl-footer-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 24px;
        }

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

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

        .r6tl-footer-links a {
            text-decoration: none;
            color: var(--r6tl-muted);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .r6tl-footer-bottom {
            padding-top: 32px;
            border-top: 1px solid var(--r6tl-border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .r6tl-copyright {
            font-size: 13px;
            color: var(--r6tl-muted);
        }

        /* 实用类 */
        .r6tl-text-center { text-align: center; }
        .r6tl-mt-8 { margin-top: 64px; }
        .r6tl-mb-4 { margin-bottom: 32px; }