:root {
            --lbqr81-primary: #004a99;
            --lbqr81-accent: #00d2ff;
            --lbqr81-bg: #f8fafc;
            --lbqr81-dark: #1e293b;
            --lbqr81-text: #334155;
            --lbqr81-white: #ffffff;
            --lbqr81-spacing: 8px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--lbqr81-bg);
            color: var(--lbqr81-text);
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* Typography */
        h1 { font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.1; margin-bottom: 24px; font-weight: 800; }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 32px; color: var(--lbqr81-dark); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); margin-bottom: 16px; }
        p { margin-bottom: 16px; line-height: 1.8; word-break: break-word; overflow-wrap: break-word; }

        /* Navigation */
        .lbqr81-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .lbqr81-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

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

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

        .lbqr81-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .lbqr81-menu a {
            text-decoration: none;
            color: var(--lbqr81-dark);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s;
            position: relative;
        }

        .lbqr81-menu a:hover, .lbqr81-menu a.active {
            color: var(--lbqr81-primary);
        }

        .lbqr81-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--lbqr81-primary);
        }

        /* Hero Section */
        .lbqr81-hero {
            padding: 160px 32px 96px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: var(--lbqr81-white);
            position: relative;
            overflow: hidden;
        }

        .lbqr81-hero-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 48px;
        }

        .lbqr81-hero-content {
            flex: 1;
            min-width: 320px;
        }

        .lbqr81-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 210, 255, 0.15);
            border: 1px solid var(--lbqr81-accent);
            color: var(--lbqr81-accent);
            border-radius: 30px;
            font-size: 13px;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .lbqr81-hero-title span {
            color: var(--lbqr81-accent);
        }

        .lbqr81-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        .lbqr81-hero-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 24px;
            padding: 40px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            transform: perspective(1000px) rotateY(-5deg);
        }

        /* Download Section */
        .lbqr81-download-zone {
            margin-top: -48px;
            padding: 0 32px;
            position: relative;
            z-index: 10;
        }

        .lbqr81-download-card {
            max-width: 900px;
            margin: 0 auto;
            background: var(--lbqr81-white);
            border-radius: 16px;
            padding: 48px;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 32px;
        }

        .lbqr81-btn-primary {
            background: linear-gradient(to right, var(--lbqr81-primary), #0066cc);
            color: white;
            padding: 20px 48px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            font-size: 18px;
            transition: transform 0.3s, box-shadow 0.3s;
            display: inline-block;
            box-shadow: 0 10px 15px -3px rgba(0, 74, 153, 0.3);
        }

        .lbqr81-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 25px -5px rgba(0, 74, 153, 0.4);
        }

        /* Grid Sections */
        .lbqr81-section {
            padding: 96px 32px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .lbqr81-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .lbqr81-feature-card {
            background: var(--lbqr81-white);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .lbqr81-feature-card:hover {
            border-color: var(--lbqr81-primary);
            transform: translateY(-8px);
        }

        .lbqr81-type-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--lbqr81-primary);
            margin-bottom: 12px;
            display: block;
        }

        /* Anatomy Section */
        .lbqr81-anatomy-box {
            background: var(--lbqr81-dark);
            color: var(--lbqr81-white);
            border-radius: 24px;
            padding: 64px;
            margin-bottom: 64px;
        }

        .lbqr81-anatomy-item {
            margin-bottom: 40px;
            border-left: 4px solid var(--lbqr81-accent);
            padding-left: 24px;
        }

        /* Workflow Section */
        .lbqr81-workflow-container {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .lbqr81-workflow-item {
            flex: 1;
            min-width: 300px;
            background: #f1f5f9;
            padding: 32px;
            border-radius: 16px;
        }

        .lbqr81-step-list {
            list-style: none;
            margin-top: 20px;
        }

        .lbqr81-step-list li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            gap: 12px;
        }

        .lbqr81-step-list li::before {
            content: '✓';
            color: var(--lbqr81-primary);
            font-weight: bold;
        }

        /* Roadmap Section */
        .lbqr81-roadmap {
            padding: 64px 0;
            border-top: 1px solid #e2e8f0;
        }

        .lbqr81-roadmap-track {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 32px;
        }

        .lbqr81-era-card {
            flex: 1;
            min-width: 280px;
            padding: 24px;
            background: var(--lbqr81-white);
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .lbqr81-era-name {
            font-weight: 800;
            color: var(--lbqr81-primary);
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        /* Footer */
        .lbqr81-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 32px;
            text-align: center;
        }

        .lbqr81-footer-brand {
            color: var(--lbqr81-white);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .lbqr81-footer-copy {
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .lbqr81-nav-container { height: auto; padding: 16px; }
            .lbqr81-menu { gap: 12px; justify-content: center; margin-top: 16px; }
            .lbqr81-hero { padding-top: 120px; text-align: center; }
            .lbqr81-hero-inner { flex-direction: column; }
            .lbqr81-hero-card { transform: none; }
            .lbqr81-download-card { flex-direction: column; text-align: center; }
            .lbqr81-anatomy-box { padding: 32px; }
        }