:root {
            --lbqr81-primary: #0055aa;
            --lbqr81-secondary: #2d3436;
            --lbqr81-accent: #00d2ff;
            --lbqr81-bg-light: #f4f7f6;
            --lbqr81-text-dark: #1e272e;
            --lbqr81-text-muted: #57606f;
            --lbqr81-white: #ffffff;
            --lbqr81-key-bg: #e0e0e0;
            --lbqr81-spacing: 8px;
            --lbqr81-container-width: 1300px;
        }

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

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

        /* 导航栏 */
        .lbqr81-navbar {
            position: fixed;
            top: 0;
            width: 100%;
            height: 72px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .lbqr81-nav-container {
            max-width: var(--lbqr81-container-width);
            margin: 0 auto;
            width: 100%;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .lbqr81-logo img {
            height: 48px;
            width: auto;
            display: block;
        }

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

        .lbqr81-nav-item a {
            text-decoration: none;
            color: var(--lbqr81-text-dark);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 12px;
            border-radius: 4px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

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

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

        /* Hero 区域 - 独特视觉风格 */
        .lbqr81-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
            color: var(--lbqr81-white);
            position: relative;
            overflow: hidden;
            clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
        }

        .lbqr81-hero-content {
            max-width: var(--lbqr81-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .lbqr81-hero-text {
            flex: 1;
            min-width: 320px;
            padding-right: 48px;
        }

        .lbqr81-hero-text h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
            word-break: break-word;
        }

        .lbqr81-hero-text p {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .lbqr81-hero-visual {
            flex: 1;
            min-width: 320px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 32px;
            font-family: "Consolas", monospace;
            box-shadow: 0 40px 80px rgba(0,0,0,0.3);
            position: relative;
        }

        .lbqr81-code-line {
            display: block;
            margin-bottom: 8px;
            color: var(--lbqr81-accent);
        }

        /* 快捷键矩阵区域 */
        .lbqr81-section {
            padding: 80px 24px;
            max-width: var(--lbqr81-container-width);
            margin: 0 auto;
        }

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

        .lbqr81-section-header h2 {
            font-size: 32px;
            color: var(--lbqr81-primary);
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        .lbqr81-section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--lbqr81-accent);
            border-radius: 2px;
        }

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

        .lbqr81-card {
            background: var(--lbqr81-white);
            border-radius: 16px;
            padding: 32px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--lbqr81-primary);
            min-width: 0;
        }

        .lbqr81-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .lbqr81-card h3 {
            margin-bottom: 24px;
            font-size: 20px;
            color: var(--lbqr81-secondary);
            border-bottom: 1px solid #eee;
            padding-bottom: 12px;
        }

        .lbqr81-shortcut-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
            gap: 12px;
        }

        .lbqr81-key-box {
            background: #2d3436;
            color: #fff;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: bold;
            font-family: monospace;
            box-shadow: 0 3px 0 #000;
            white-space: nowrap;
        }

        .lbqr81-key-desc {
            font-size: 14px;
            color: var(--lbqr81-text-muted);
            text-align: right;
            word-break: break-all;
        }

        /* 搜索框风格 */
        .lbqr81-filter-area {
            background: var(--lbqr81-white);
            padding: 40px;
            border-radius: 20px;
            margin-top: -60px;
            margin-bottom: 60px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.1);
            position: relative;
            z-index: 10;
        }

        .lbqr81-search-input {
            width: 100%;
            padding: 16px 24px;
            border: 2px solid #eee;
            border-radius: 12px;
            font-size: 18px;
            transition: border-color 0.3s ease;
            outline: none;
        }

        .lbqr81-search-input:focus {
            border-color: var(--lbqr81-primary);
        }

        /* 详情列表 */
        .lbqr81-detail-section {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 80px;
            background: var(--lbqr81-white);
            padding: 48px;
            border-radius: 24px;
            align-items: center;
        }

        .lbqr81-detail-text {
            flex: 1;
            min-width: 300px;
        }

        .lbqr81-detail-text h2 {
            font-size: 28px;
            margin-bottom: 24px;
        }

        .lbqr81-detail-text ul {
            list-style: none;
        }

        .lbqr81-detail-text li {
            margin-bottom: 16px;
            padding-left: 24px;
            position: relative;
        }

        .lbqr81-detail-text li::before {
            content: '●';
            color: var(--lbqr81-accent);
            position: absolute;
            left: 0;
        }

        /* 页脚 */
        .lbqr81-footer {
            background: #1a1a1a;
            color: var(--lbqr81-white);
            padding: 80px 24px 40px;
        }

        .lbqr81-footer-content {
            max-width: var(--lbqr81-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
        }

        .lbqr81-footer-brand h4 {
            font-size: 22px;
            margin-bottom: 20px;
            color: var(--lbqr81-accent);
        }

        .lbqr81-footer-links h4 {
            font-size: 18px;
            margin-bottom: 20px;
        }

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

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

        .lbqr81-footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .lbqr81-copyright {
            text-align: center;
            margin-top: 60px;
            padding-top: 30px;
            border-top: 1px solid #333;
            color: #7f8c8d;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .lbqr81-navbar {
                height: auto;
                padding: 10px 0;
            }
            .lbqr81-nav-container {
                flex-direction: column;
                gap: 10px;
            }
            .lbqr81-nav-menu {
                justify-content: center;
                gap: 8px;
            }
            .lbqr81-hero {
                padding: 120px 24px 60px;
            }
            .lbqr81-hero-text {
                padding-right: 0;
                text-align: center;
                margin-bottom: 40px;
            }
            .lbqr81-detail-section {
                padding: 24px;
            }
        }