:root {
            --lbqr81-primary: #0055aa;
            --lbqr81-accent: #00d4ff;
            --lbqr81-dark: #0c1b2d;
            --lbqr81-light: #f4f7fa;
            --lbqr81-text: #2c3e50;
            --lbqr81-text-muted: #64748b;
            --lbqr81-white: #ffffff;
            --lbqr81-border: #e2e8f0;
            --lbqr81-shadow: 0 10px 30px rgba(0, 85, 170, 0.1);
            --lbqr81-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: var(--lbqr81-text);
            background-color: var(--lbqr81-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局容器 */
        .lbqr81-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .lbqr81-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--lbqr81-border);
            transition: var(--lbqr81-transition);
        }

        .lbqr81-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

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

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

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

        .lbqr81-nav-item {
            min-width: 0;
        }

        .lbqr81-nav-link {
            text-decoration: none;
            color: var(--lbqr81-text);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--lbqr81-transition);
        }

        .lbqr81-nav-link:hover {
            color: var(--lbqr81-primary);
            background: rgba(0, 85, 170, 0.05);
        }

        .lbqr81-nav-link.active {
            color: var(--lbqr81-white);
            background: var(--lbqr81-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .lbqr81-hero {
            padding: 160px 0 96px;
            background: linear-gradient(135deg, #f8fbff 0%, #e8f1ff 100%);
            position: relative;
            overflow: hidden;
        }

        .lbqr81-hero::after {
            content: "";
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 120%;
            background: rgba(0, 85, 170, 0.03);
            transform: skewX(-15deg);
            z-index: 0;
        }

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

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

        .lbqr81-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            color: var(--lbqr81-dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .lbqr81-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--lbqr81-text-muted);
            margin-bottom: 32px;
            max-width: 600px;
            word-break: break-word;
        }

        .lbqr81-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--lbqr81-accent);
            color: var(--lbqr81-dark);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        /* 技术解构区 - 网格卡片 */
        .lbqr81-section {
            padding: 96px 0;
            word-break: break-word;
        }

        .lbqr81-section-title {
            text-align: center;
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            margin-bottom: 64px;
            position: relative;
        }

        .lbqr81-section-title::after {
            content: "";
            display: block;
            width: 60px;
            height: 4px;
            background: var(--lbqr81-primary);
            margin: 16px auto 0;
            border-radius: 2px;
        }

        .lbqr81-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }

        .lbqr81-card {
            background: var(--lbqr81-white);
            border: 1px solid var(--lbqr81-border);
            padding: 32px;
            border-radius: 16px;
            transition: var(--lbqr81-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

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

        .lbqr81-card-icon {
            font-size: 32px;
            margin-bottom: 24px;
            color: var(--lbqr81-primary);
        }

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

        .lbqr81-card-p {
            font-size: 15px;
            color: var(--lbqr81-text-muted);
            line-height: 1.7;
        }

        /* 工作流展示区 - 交错布局 */
        .lbqr81-workflow {
            background: var(--lbqr81-light);
        }

        .lbqr81-step {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }

        .lbqr81-step:nth-child(even) {
            flex-direction: row-reverse;
        }

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

        .lbqr81-step-visual {
            flex: 1;
            min-width: 300px;
            background: var(--lbqr81-dark);
            border-radius: 20px;
            padding: 40px;
            color: #00ffcc;
            font-family: "Consolas", monospace;
            box-shadow: 0 20px 40px rgba(0,0,0,0.2);
        }

        .lbqr81-step-tag {
            color: var(--lbqr81-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: block;
        }

        .lbqr81-step-h3 {
            font-size: 28px;
            margin-bottom: 20px;
        }

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

        .lbqr81-step-item {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
        }

        .lbqr81-step-item::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--lbqr81-primary);
            font-weight: bold;
        }

        /* 进化路线图 - 线性布局 */
        .lbqr81-roadmap {
            padding: 96px 0;
        }

        .lbqr81-timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .lbqr81-timeline-item {
            padding: 32px;
            border-left: 3px solid var(--lbqr81-border);
            position: relative;
            margin-left: 20px;
            transition: var(--lbqr81-transition);
        }

        .lbqr81-timeline-item:hover {
            border-left-color: var(--lbqr81-primary);
            background: rgba(0, 85, 170, 0.02);
        }

        .lbqr81-timeline-item::after {
            content: "";
            position: absolute;
            left: -11px;
            top: 40px;
            width: 18px;
            height: 18px;
            background: var(--lbqr81-white);
            border: 4px solid var(--lbqr81-primary);
            border-radius: 50%;
        }

        .lbqr81-timeline-era {
            font-weight: 800;
            color: var(--lbqr81-primary);
            font-size: 18px;
            margin-bottom: 8px;
        }

        /* 页脚 */
        .lbqr81-footer {
            background: var(--lbqr81-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 80px 0 40px;
        }

        .lbqr81-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .lbqr81-footer-brand h2 {
            color: var(--lbqr81-white);
            margin-bottom: 20px;
        }

        .lbqr81-footer-links h4 {
            color: var(--lbqr81-white);
            margin-bottom: 24px;
        }

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

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

        .lbqr81-footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: var(--lbqr81-transition);
        }

        .lbqr81-footer-links a:hover {
            color: var(--lbqr81-accent);
        }

        .lbqr81-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .lbqr81-nav-inner {
                height: auto;
                padding: 16px 0;
            }
            .lbqr81-nav-menu {
                margin-top: 16px;
                width: 100%;
                justify-content: center;
            }
            .lbqr81-hero {
                padding: 120px 0 64px;
                text-align: center;
            }
            .lbqr81-hero-text {
                min-width: 100%;
            }
            .lbqr81-step {
                gap: 32px;
            }
            .lbqr81-step:nth-child(even) {
                flex-direction: row;
            }
        }