:root {
            --r6tl-primary: #FF6C37;
            --r6tl-secondary: #00F2FE;
            --r6tl-dark: #212121;
            --r6tl-light: #F8F9FA;
            --r6tl-gray: #6B6B6B;
            --r6tl-border: #E5E5E5;
            --r6tl-success: #27AE60;
            --r6tl-font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }

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

        body {
            font-family: var(--r6tl-font-main);
            background-color: #FFFFFF;
            color: var(--r6tl-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .r6tl-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .r6tl-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--r6tl-border);
        }

        .r6tl-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: auto;
            min-height: 70px;
            padding: 10px 0;
        }

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

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

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

        .r6tl-nav-item a {
            text-decoration: none;
            color: var(--r6tl-dark);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 4px;
            transition: color 0.3s;
            word-break: keep-all;
        }

        .r6tl-nav-item a:hover {
            color: var(--r6tl-primary);
        }

        .r6tl-nav-item a.r6tl-active {
            color: var(--r6tl-primary);
            border-bottom: 2px solid var(--r6tl-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .r6tl-hero-section {
            padding: 96px 0 64px;
            background: radial-gradient(circle at 10% 20%, rgba(255, 108, 55, 0.05) 0%, rgba(0, 242, 254, 0.05) 90%);
            position: relative;
        }

        .r6tl-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

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

        .r6tl-hero-tag {
            display: inline-block;
            background: var(--r6tl-secondary);
            color: var(--r6tl-dark);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .r6tl-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, var(--r6tl-dark) 0%, var(--r6tl-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .r6tl-hero-subtitle {
            font-size: clamp(1rem, 1.2vw + 0.5rem, 1.25rem);
            color: var(--r6tl-gray);
            margin-bottom: 32px;
            max-width: 600px;
        }

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

        .r6tl-doc-preview {
            background: var(--r6tl-dark);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 24px 48px rgba(0,0,0,0.15);
            color: #fff;
            transform: perspective(1000px) rotateY(-10deg);
        }

        .r6tl-code-line {
            height: 12px;
            background: rgba(255,255,255,0.1);
            margin-bottom: 12px;
            border-radius: 6px;
        }

        .r6tl-code-line.short { width: 40%; }
        .r6tl-code-line.mid { width: 70%; }
        .r6tl-code-line.accent { background: var(--r6tl-primary); width: 20%; }

        /* 矩阵区块 - API Lifecycle */
        .r6tl-matrix-section {
            padding: 96px 0;
        }

        .r6tl-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .r6tl-section-title {
            font-size: 2.5rem;
            margin-bottom: 16px;
        }

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

        .r6tl-matrix-card {
            background: #FFFFFF;
            border: 1px solid var(--r6tl-border);
            border-radius: 16px;
            padding: 32px;
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
        }

        .r6tl-matrix-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--r6tl-primary);
        }

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

        .r6tl-card-method {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 24px;
        }

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

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

        .r6tl-tool-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 6px;
            height: 6px;
            background: var(--r6tl-secondary);
            border-radius: 50%;
        }

        .r6tl-tool-name {
            display: block;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 4px;
            color: var(--r6tl-dark);
            text-transform: capitalize;
        }

        .r6tl-tool-desc {
            font-size: 14px;
            color: var(--r6tl-gray);
            line-height: 1.5;
        }

        /* 动态内容区块 */
        .r6tl-dynamic-section {
            background: var(--r6tl-light);
            padding: 80px 0;
        }

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

        .r6tl-article-item {
            flex: 1;
            min-width: 300px;
            background: #fff;
            padding: 24px;
            border-radius: 12px;
        }

        /* 底部 */
        .r6tl-footer {
            background: var(--r6tl-dark);
            color: #FFFFFF;
            padding: 80px 0 40px;
        }

        .r6tl-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
        }

        .r6tl-footer-brand {
            flex: 2;
            min-width: 280px;
        }

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

        .r6tl-footer-links {
            flex: 1;
            min-width: 150px;
        }

        .r6tl-footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
            color: #fff;
        }

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

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

        .r6tl-footer-list a {
            color: #AAA;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .r6tl-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 13px;
            color: #666;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .r6tl-nav-wrapper {
                flex-direction: column;
                padding: 16px 0;
            }
            .r6tl-nav-list {
                justify-content: center;
                margin-top: 16px;
            }
            .r6tl-hero-visual {
                display: none;
            }
            .r6tl-hero-content {
                text-align: center;
            }
            .r6tl-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
        }