:root {
            --lbqr81-primary: #005fb8;
            --lbqr81-primary-dark: #004a8f;
            --lbqr81-accent: #00d4ff;
            --lbqr81-bg: #f4f7fa;
            --lbqr81-text: #1a1c1e;
            --lbqr81-text-light: #606770;
            --lbqr81-white: #ffffff;
            --lbqr81-card-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --lbqr81-terminal-bg: #1e1e1e;
            --lbqr81-spacing-unit: 8px;
        }

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

        body {
            font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--lbqr81-text);
            background-color: var(--lbqr81-bg);
            word-break: keep-all;
            overflow-x: hidden;
        }

        .lbqr81-container {
            max-width: 95vw;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navigation */
        .lbqr81-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(15px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
        }

        .lbqr81-nav-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            min-width: 0;
        }

        .lbqr81-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .lbqr81-logo img {
            height: 40px;
            display: block;
        }

        .lbqr81-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .lbqr81-menu-item a {
            text-decoration: none;
            color: var(--lbqr81-text-light);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .lbqr81-menu-item a:hover {
            color: var(--lbqr81-primary);
            background: rgba(0, 95, 184, 0.05);
        }

        .lbqr81-menu-item a.active {
            color: var(--lbqr81-primary);
            background: rgba(0, 95, 184, 0.1);
        }

        /* Hero Section - Unique Diagonal Split */
        .lbqr81-hero {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #ffffff 0%, #e9f0f7 100%);
            position: relative;
            overflow: hidden;
        }

        .lbqr81-hero::after {
            content: '';
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0,212,255,0.1) 0%, transparent 70%);
            z-index: 0;
        }

        .lbqr81-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }

        .lbqr81-hero-text {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .lbqr81-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            color: var(--lbqr81-primary-dark);
            margin-bottom: 24px;
        }

        .lbqr81-hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: var(--lbqr81-text-light);
            max-width: 600px;
        }

        /* Technical Anatomy - Modular Cards */
        .lbqr81-section {
            padding: 96px 0;
        }

        .lbqr81-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .lbqr81-section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            margin-bottom: 16px;
            color: var(--lbqr81-text);
        }

        .lbqr81-anatomy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .lbqr81-anatomy-card {
            background: var(--lbqr81-white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--lbqr81-card-shadow);
            transition: transform 0.3s ease;
            min-width: 0;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .lbqr81-anatomy-card:hover {
            transform: translateY(-8px);
        }

        .lbqr81-anatomy-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(0, 95, 184, 0.1);
            color: var(--lbqr81-primary);
            font-size: 12px;
            font-weight: 700;
            border-radius: 50px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .lbqr81-anatomy-card h3 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--lbqr81-text);
        }

        .lbqr81-anatomy-detail {
            font-size: 15px;
            color: var(--lbqr81-text-light);
            margin-bottom: 24px;
        }

        .lbqr81-anatomy-highlight {
            padding-top: 20px;
            border-top: 1px dashed #eee;
            font-size: 14px;
            font-style: italic;
            color: var(--lbqr81-primary);
        }

        /* Plugin Tetrad - Bento Box Layout */
        .lbqr81-plugin-bg {
            background: #0a192f;
            color: #fff;
        }

        .lbqr81-plugin-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .lbqr81-plugin-item {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 16px;
            padding: 32px;
            min-width: 0;
            transition: all 0.3s ease;
        }

        .lbqr81-plugin-item:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--lbqr81-accent);
        }

        .lbqr81-plugin-type {
            font-family: "Courier New", monospace;
            color: var(--lbqr81-accent);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

        /* Workflows - Visual Steps */
        .lbqr81-workflow-row {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 64px;
            align-items: center;
        }

        .lbqr81-workflow-content {
            flex: 1;
            min-width: 300px;
        }

        .lbqr81-workflow-steps {
            list-style: none;
            margin-top: 24px;
        }

        .lbqr81-workflow-step {
            position: relative;
            padding-left: 40px;
            margin-bottom: 20px;
            font-size: 16px;
        }

        .lbqr81-workflow-step::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            width: 24px;
            height: 24px;
            background: var(--lbqr81-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: bold;
        }

        .lbqr81-workflow-step:nth-child(1)::before { content: '1'; }
        .lbqr81-workflow-step:nth-child(2)::before { content: '2'; }
        .lbqr81-workflow-step:nth-child(3)::before { content: '3'; }
        .lbqr81-workflow-step:nth-child(4)::before { content: '4'; }

        /* Roadmap - Minimalist Horizontal Flow */
        .lbqr81-roadmap-container {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: space-between;
            position: relative;
            padding-top: 40px;
        }

        .lbqr81-roadmap-item {
            flex: 1;
            min-width: 260px;
            background: var(--lbqr81-white);
            padding: 32px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            position: relative;
        }

        .lbqr81-roadmap-era {
            font-weight: 800;
            color: var(--lbqr81-primary);
            margin-bottom: 8px;
            display: block;
        }

        /* Footer */
        .lbqr81-footer {
            background: #ffffff;
            padding: 80px 0 40px;
            border-top: 1px solid #eee;
        }

        .lbqr81-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 48px;
        }

        .lbqr81-footer-brand {
            max-width: 300px;
        }

        .lbqr81-footer-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--lbqr81-primary);
            margin-bottom: 16px;
        }

        .lbqr81-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .lbqr81-footer-list {
            list-style: none;
        }

        .lbqr81-footer-list li {
            margin-bottom: 12px;
        }

        .lbqr81-footer-list a {
            text-decoration: none;
            color: var(--lbqr81-text-light);
            font-size: 14px;
            transition: color 0.3s;
        }

        .lbqr81-footer-list a:hover {
            color: var(--lbqr81-primary);
        }

        .lbqr81-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #f0f0f0;
            color: #999;
            font-size: 13px;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .lbqr81-menu {
                display: none; /* In a real site, implement a hamburger menu */
            }
        }

        @media (max-width: 768px) {
            .lbqr81-hero {
                padding: 120px 0 60px;
                text-align: center;
            }
            .lbqr81-hero-text {
                min-width: 100%;
            }
            .lbqr81-hero-subtitle {
                margin: 0 auto;
            }
            .lbqr81-workflow-row {
                flex-direction: column;
            }
            .lbqr81-navbar {
                height: 70px;
            }
        }