:root {
            --lnok-primary: #d32f2f; /* Beyond Compare 经典红 */
            --lnok-secondary: #1976d2;
            --lnok-dark: #1a1c1e;
            --lnok-light: #f8f9fa;
            --lnok-accent: #ffeb3b;
            --lnok-text: #2c3e50;
            --lnok-text-muted: #64748b;
            --lnok-border: #e2e8f0;
            --lnok-card-bg: #ffffff;
            --lnok-spacing-unit: 8px;
            --lnok-max-width: 1300px;
        }

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

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

        /* 导航系统 */
        .lnok-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--lnok-border);
            transition: all 0.3s ease;
        }

        .lnok-nav-container {
            max-width: var(--lnok-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

        .lnok-logo {
            flex: 0 0 auto;
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .lnok-logo img {
            height: 40px;
            width: auto;
        }

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

        .lnok-nav-link {
            text-decoration: none;
            color: var(--lnok-text);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            position: relative;
            padding: 8px 0;
        }

        .lnok-nav-link:hover {
            color: var(--lnok-primary);
        }

        .lnok-nav-link.active {
            color: var(--lnok-primary);
        }

        .lnok-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--lnok-primary);
        }

        /* Hero 区域 - 非对称设计 */
        .lnok-hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #fff 0%, #f1f5f9 100%);
            position: relative;
            overflow: hidden;
        }

        .lnok-hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 120%;
            background: rgba(211, 47, 47, 0.03);
            transform: skewX(-15deg);
            z-index: 0;
        }

        .lnok-hero-inner {
            max-width: var(--lnok-max-width);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

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

        .lnok-hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--lnok-dark);
            word-break: break-word;
        }

        .lnok-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--lnok-text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }

        /* 搜索交互区 */
        .lnok-faq-search {
            background: #fff;
            padding: 10px;
            border-radius: 50px;
            display: flex;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            max-width: 500px;
            margin-bottom: 24px;
            border: 1px solid var(--lnok-border);
            flex-wrap: wrap;
        }

        .lnok-search-input {
            flex: 1;
            border: none;
            padding: 12px 24px;
            outline: none;
            font-size: 16px;
            min-width: 200px;
        }

        .lnok-search-btn {
            background: var(--lnok-primary);
            color: white;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            cursor: pointer;
            font-weight: bold;
            transition: transform 0.2s;
        }

        .lnok-search-btn:hover {
            transform: scale(1.05);
        }

        /* 核心模块 - FAQ 栅格 */
        .lnok-section {
            padding: 96px 0;
        }

        .lnok-container {
            max-width: var(--lnok-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .lnok-badge {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(211, 47, 47, 0.1);
            color: var(--lnok-primary);
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 16px;
        }

        .lnok-faq-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 32px;
        }

        .lnok-faq-item {
            background: var(--lnok-card-bg);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--lnok-border);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .lnok-faq-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 0;
            background: var(--lnok-primary);
            transition: height 0.3s ease;
        }

        .lnok-faq-item:hover {
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            transform: translateY(-5px);
        }

        .lnok-faq-item:hover::before {
            height: 100%;
        }

        .lnok-faq-question {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--lnok-dark);
            display: flex;
            align-items: flex-start;
        }

        .lnok-faq-answer {
            color: var(--lnok-text-muted);
            font-size: 1rem;
        }

        /* 逻辑引擎展示 */
        .lnok-logic-section {
            background: var(--lnok-dark);
            color: #fff;
            border-radius: 40px;
            margin: 0 24px;
            padding: 80px 48px;
        }

        .lnok-logic-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 48px;
        }

        .lnok-logic-card {
            flex: 1;
            min-width: 300px;
            padding: 32px;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 24px;
        }

        .lnok-logic-name {
            color: var(--lnok-primary);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .lnok-logic-depth {
            font-size: 1.1rem;
            margin-bottom: 16px;
            opacity: 0.9;
        }

        .lnok-logic-usecase {
            font-size: 0.9rem;
            color: #94a3b8;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 16px;
        }

        /* ROI 分析区块 */
        .lnok-roi-section {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 64px;
        }

        .lnok-roi-item {
            flex: 1;
            min-width: 280px;
            background: #fff;
            padding: 32px;
            border-radius: 16px;
            text-align: center;
            border-bottom: 4px solid var(--lnok-secondary);
        }

        .lnok-roi-metric {
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--lnok-text-muted);
            margin-bottom: 8px;
        }

        .lnok-roi-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--lnok-dark);
        }

        /* 页脚设计 */
        .lnok-footer {
            background: #f1f5f9;
            padding: 80px 0 40px;
            margin-top: 96px;
            border-top: 1px solid var(--lnok-border);
        }

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

        .lnok-footer-brand h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--lnok-primary);
        }

        .lnok-footer-links h4 {
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

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

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

        .lnok-footer-links a {
            text-decoration: none;
            color: var(--lnok-text-muted);
            transition: color 0.3s;
        }

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

        .lnok-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid var(--lnok-border);
            color: var(--lnok-text-muted);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .lnok-nav-menu {
                display: none; /* 简化演示：移动端隐藏菜单 */
            }
            .lnok-hero-title {
                font-size: 2.5rem;
            }
            .lnok-faq-grid {
                grid-template-columns: 1fr;
            }
            .lnok-logic-section {
                padding: 40px 24px;
                margin: 0 16px;
            }
        }

        /* 动画增强 */
        .lnok-fade-in {
            animation: fadeIn 0.8s ease-out forwards;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }