:root {
            --hbosco-primary: #a31d22;
            --hbosco-primary-light: #d63031;
            --hbosco-dark: #2d3436;
            --hbosco-gray: #636e72;
            --hbosco-light: #f5f6fa;
            --hbosco-accent: #0984e3;
            --hbosco-border: #dfe6e9;
            --hbosco-font-main: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --hbosco-container-width: 1300px;
        }

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

        body {
            font-family: var(--hbosco-font-main);
            color: var(--hbosco-dark);
            line-height: 1.6;
            background-color: #fff;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏 */
        .hbosco-navbar {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--hbosco-border);
            padding: 0.5rem 0;
        }

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

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

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

        .hbosco-nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            min-width: 0;
        }

        .hbosco-nav-menu li {
            margin-left: 16px;
            min-width: 0;
        }

        .hbosco-nav-menu a {
            text-decoration: none;
            color: var(--hbosco-dark);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .hbosco-nav-menu a:hover {
            color: var(--hbosco-primary);
            background: rgba(163, 29, 34, 0.05);
        }

        .hbosco-nav-menu a.active {
            color: var(--hbosco-primary);
            font-weight: 700;
            border-bottom: 2px solid var(--hbosco-primary);
            border-radius: 0;
        }

        /* Hero 区域 - 独特布局 */
        .hbosco-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hbosco-hero::before {
            content: "KEYS";
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 15rem;
            font-weight: 900;
            color: rgba(0,0,0,0.03);
            z-index: 0;
            user-select: none;
        }

        .hbosco-hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hbosco-hero h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            color: var(--hbosco-primary);
            margin-bottom: 24px;
            line-height: 1.2;
            word-break: break-word;
        }

        .hbosco-hero p {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--hbosco-gray);
            max-width: 700px;
            margin: 0 auto 40px;
            word-break: break-word;
        }

        /* 快捷键搜索/过滤 */
        .hbosco-search-section {
            max-width: var(--hbosco-container-width);
            margin: -40px auto 48px;
            padding: 0 24px;
            position: relative;
            z-index: 10;
        }

        .hbosco-search-box {
            background: #fff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .hbosco-search-input {
            flex: 1;
            min-width: 280px;
            padding: 14px 20px;
            border: 2px solid var(--hbosco-border);
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }

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

        .hbosco-filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            min-width: 0;
        }

        .hbosco-tag {
            padding: 6px 16px;
            background: var(--hbosco-light);
            border-radius: 20px;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.2s;
            border: 1px solid transparent;
        }

        .hbosco-tag:hover, .hbosco-tag.active {
            background: var(--hbosco-primary);
            color: #fff;
        }

        /* 快捷键表格区块 */
        .hbosco-section {
            padding: 64px 0;
            max-width: var(--hbosco-container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .hbosco-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 32px;
            margin-top: 32px;
        }

        @media (max-width: 768px) {
            .hbosco-grid {
                grid-template-columns: 1fr;
            }
            .hbosco-nav-menu {
                display: none; /* 简化演示，实际应有汉堡菜单 */
            }
        }

        .hbosco-card {
            background: #fff;
            border: 1px solid var(--hbosco-border);
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .hbosco-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
        }

        .hbosco-card-header {
            padding: 20px;
            background: var(--hbosco-light);
            border-bottom: 1px solid var(--hbosco-border);
        }

        .hbosco-card-header h3 {
            color: var(--hbosco-primary);
            font-size: 1.25rem;
            margin: 0;
        }

        .hbosco-card-body {
            padding: 0;
        }

        .hbosco-shortcut-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 20px;
            border-bottom: 1px solid #f0f0f0;
            min-width: 0;
        }

        .hbosco-shortcut-row:last-child {
            border-bottom: none;
        }

        .hbosco-shortcut-label {
            font-size: 0.95rem;
            color: var(--hbosco-dark);
            flex: 1;
            padding-right: 12px;
            word-break: break-word;
        }

        .hbosco-kbd-group {
            display: flex;
            gap: 4px;
            flex-shrink: 0;
        }

        kbd {
            background-color: #eee;
            border-radius: 3px;
            border: 1px solid #b4b4b4;
            box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 2px 0 0 rgba(255, 255, 255, 0.7) inset;
            color: #333;
            display: inline-block;
            font-size: 0.85em;
            font-weight: 700;
            line-height: 1;
            padding: 4px 6px;
            white-space: nowrap;
        }

        /* 算法与协议展示层 */
        .hbosco-intel-layer {
            background: var(--hbosco-dark);
            color: #fff;
            padding: 80px 24px;
            margin: 64px 0;
            border-radius: 24px;
        }

        .hbosco-intel-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .hbosco-intel-item {
            flex: 1;
            min-width: 300px;
        }

        .hbosco-intel-item h4 {
            color: var(--hbosco-primary-light);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .hbosco-intel-item p {
            color: #bdc3c7;
            margin-bottom: 20px;
        }

        .hbosco-capabilities {
            list-style: none;
        }

        .hbosco-capabilities li {
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }

        .hbosco-capabilities li::before {
            content: "•";
            color: var(--hbosco-primary-light);
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        /* 行业应用矩阵 */
        .hbosco-matrix {
            margin-top: 48px;
        }

        .hbosco-matrix-item {
            display: flex;
            flex-wrap: wrap;
            background: #fff;
            border: 1px solid var(--hbosco-border);
            margin-bottom: 24px;
            border-radius: 12px;
            overflow: hidden;
        }

        .hbosco-matrix-side {
            background: var(--hbosco-light);
            padding: 32px;
            flex: 0 0 240px;
            border-right: 1px solid var(--hbosco-border);
        }

        .hbosco-matrix-content {
            padding: 32px;
            flex: 1;
            min-width: 300px;
        }

        .hbosco-matrix-side h5 {
            font-size: 1.1rem;
            color: var(--hbosco-primary);
            margin-bottom: 8px;
        }

        /* 页脚 */
        .hbosco-footer {
            background: #f9f9f9;
            padding: 64px 24px;
            border-top: 1px solid var(--hbosco-border);
            text-align: center;
        }

        .hbosco-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--hbosco-primary);
            margin-bottom: 16px;
        }

        .hbosco-footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 32px;
            list-style: none;
        }

        .hbosco-footer-links a {
            text-decoration: none;
            color: var(--hbosco-gray);
            font-size: 0.9rem;
        }

        .hbosco-copyright {
            color: #999;
            font-size: 0.85rem;
        }

        /* 动画增强 */
        .hbosco-fade-in {
            transition: all 0.6s ease-out;
        }