:root {
            --lnok-primary: #B32025;
            --lnok-primary-dark: #8E1A1E;
            --lnok-secondary: #2C3E50;
            --lnok-bg-light: #F8F9FA;
            --lnok-bg-dark: #1A1C1E;
            --lnok-text-main: #333333;
            --lnok-text-muted: #666666;
            --lnok-white: #FFFFFF;
            --lnok-border: #E0E0E0;
            --lnok-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --lnok-container-width: 1400px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: var(--lnok-text-main);
            background-color: var(--lnok-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 布局基础 */
        .lnok-container {
            max-width: var(--lnok-container-width);
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        .lnok-section {
            padding: 96px 0;
            position: relative;
        }

        /* 导航栏 */
        .lnok-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--lnok-border);
            box-shadow: var(--lnok-shadow);
        }

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

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

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

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

        .lnok-nav-item a {
            text-decoration: none;
            color: var(--lnok-text-main);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .lnok-nav-item a:hover,
        .lnok-nav-item a.lnok-active {
            color: var(--lnok-primary);
        }

        /* Hero 区 - 独特双向对比布局 */
        .lnok-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #fdfdfd 0%, #f1f1f1 100%);
            overflow: hidden;
        }

        .lnok-hero-grid {
            display: flex;
            align-items: center;
            gap: 64px;
            flex-wrap: wrap;
        }

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

        .lnok-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--lnok-primary);
            color: var(--lnok-white);
            border-radius: 50px;
            font-size: 14px;
            margin-bottom: 24px;
            font-weight: 600;
        }

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

        .lnok-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.3rem);
            color: var(--lnok-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.8;
        }

        .lnok-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
            display: flex;
            justify-content: center;
        }

        /* 模拟文件夹对比视觉 */
        .lnok-visual-mockup {
            width: 100%;
            background: var(--lnok-white);
            border-radius: 16px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.12);
            padding: 24px;
            border: 1px solid var(--lnok-border);
            transform: perspective(1000px) rotateY(-5deg);
        }

        .lnok-mockup-header {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
        }

        .lnok-dot { width: 12px; height: 12px; border-radius: 50%; background: #ddd; }
        .lnok-dot-red { background: #ff5f56; }
        .lnok-dot-yellow { background: #ffbd2e; }
        .lnok-dot-green { background: #27c93f; }

        .lnok-mockup-body {
            display: flex;
            gap: 2px;
            background: #eee;
            border-radius: 4px;
            overflow: hidden;
        }

        .lnok-pane {
            flex: 1;
            min-width: 0;
            background: var(--lnok-white);
            padding: 16px;
            height: 200px;
        }

        .lnok-line {
            height: 8px;
            background: #f0f0f0;
            margin-bottom: 12px;
            border-radius: 4px;
        }

        .lnok-line.diff { background: rgba(179, 32, 37, 0.1); border-left: 3px solid var(--lnok-primary); }

        /* 精准逻辑引擎区 */
        .lnok-engine-section {
            background: var(--lnok-bg-dark);
            color: var(--lnok-white);
        }

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

        .lnok-section-title {
            font-size: clamp(2rem, 4vw, 2.8rem);
            margin-bottom: 16px;
            color: var(--lnok-white);
        }

        .lnok-engine-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .lnok-engine-card {
            background: rgba(255, 255, 255, 0.05);
            padding: 48px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.4s ease;
            min-width: 0;
            word-break: break-word;
        }

        .lnok-engine-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-10px);
            border-color: var(--lnok-primary);
        }

        .lnok-card-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--lnok-primary);
            opacity: 0.5;
            margin-bottom: 16px;
        }

        .lnok-card-title {
            font-size: 24px;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .lnok-card-depth {
            color: #aaa;
            margin-bottom: 24px;
            font-size: 15px;
            line-height: 1.7;
        }

        .lnok-card-usecase {
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
            color: var(--lnok-primary);
            font-weight: 600;
        }

        /* ROI 分析区 */
        .lnok-roi-section {
            background: var(--lnok-white);
        }

        .lnok-roi-grid {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }

        .lnok-roi-item {
            flex: 1;
            min-width: 300px;
            background: var(--lnok-bg-light);
            padding: 40px;
            border-radius: 16px;
            text-align: center;
            border-bottom: 4px solid transparent;
            transition: border-color 0.3s;
        }

        .lnok-roi-item:hover {
            border-color: var(--lnok-primary);
        }

        .lnok-roi-metric {
            font-size: 16px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--lnok-text-muted);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .lnok-roi-value {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--lnok-bg-dark);
            line-height: 1.5;
        }

        /* 侧边对比功能深挖 */
        .lnok-feature-split {
            display: flex;
            align-items: center;
            gap: 80px;
            flex-wrap: wrap;
            margin-bottom: 96px;
        }

        .lnok-feature-split:nth-child(even) {
            flex-direction: row-reverse;
        }

        .lnok-feature-image {
            flex: 1;
            min-width: 320px;
            background: #ddd;
            height: 400px;
            border-radius: 24px;
            background-size: cover;
            background-position: center;
            box-shadow: var(--lnok-shadow);
        }

        .lnok-feature-text {
            flex: 1;
            min-width: 320px;
        }

        .lnok-feature-h3 {
            font-size: 32px;
            margin-bottom: 24px;
            color: var(--lnok-bg-dark);
        }

        /* CTA 区 */
        .lnok-cta {
            background: var(--lnok-primary);
            text-align: center;
            color: var(--lnok-white);
            border-radius: 30px;
            margin: 0 48px 96px;
            padding: 80px 24px;
        }

        .lnok-btn {
            display: inline-block;
            padding: 18px 48px;
            background: var(--lnok-white);
            color: var(--lnok-primary);
            text-decoration: none;
            font-weight: 700;
            border-radius: 50px;
            font-size: 18px;
            transition: transform 0.3s, box-shadow 0.3s;
            margin-top: 32px;
        }

        .lnok-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

        /* 页脚 */
        .lnok-footer {
            background: var(--lnok-bg-dark);
            color: #888;
            padding: 80px 0 40px;
        }

        .lnok-footer-grid {
            display: flex;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
            margin-bottom: 64px;
        }

        .lnok-footer-brand {
            flex: 2;
            min-width: 250px;
        }

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

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

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

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

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

        .lnok-footer-links a {
            color: #888;
            text-decoration: none;
            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 rgba(255,255,255,0.05);
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .lnok-container { padding: 0 24px; }
            .lnok-nav-container { height: auto; padding: 16px 0; }
            .lnok-nav-menu { display: none; } /* 移动端可改为汉堡菜单，此处简化 */
            .lnok-hero { padding-top: 120px; }
            .lnok-cta { margin: 0 24px 64px; }
            .lnok-engine-grid { grid-template-columns: 1fr; }
        }

        /* 动画交互 */
        .lnok-engine-card, .lnok-roi-item, .lnok-btn {
            cursor: pointer;
        }