:root {
            --i0sbar-primary: #42a5f5;
            --i0sbar-accent: #007aff;
            --i0sbar-bg: #fdfdfd;
            --i0sbar-text: #2c3e50;
            --i0sbar-text-light: #6a737d;
            --i0sbar-border: #e1e4e8;
            --i0sbar-card-bg: #ffffff;
            --i0sbar-code-bg: #f6f8fa;
            --i0sbar-spacing: 8px;
            --i0sbar-radius: 12px;
            --i0sbar-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
            background-color: var(--i0sbar-bg);
            color: var(--i0sbar-text);
            line-height: 1.8;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .i0sbar-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--i0sbar-border);
        }

        .i0sbar-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

        .i0sbar-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .i0sbar-logo img {
            height: 32px;
            width: auto;
        }

        .i0sbar-menu {
            display: flex;
            list-style: none;
            gap: 20px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .i0sbar-menu li a {
            text-decoration: none;
            color: var(--i0sbar-text-light);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .i0sbar-menu li a:hover, .i0sbar-menu li a.active {
            color: var(--i0sbar-accent);
        }

        /* Hero 区域 - 独特的键盘矩阵风格 */
        .i0sbar-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, #f0f7ff 0%, #ffffff 50%);
            text-align: center;
            overflow: hidden;
        }

        .i0sbar-hero-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .i0sbar-hero h1 {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            color: #111;
            word-break: break-word;
        }

        .i0sbar-hero p {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--i0sbar-text-light);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 快捷键展示卡片 */
        .i0sbar-key-display {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 64px;
            flex-wrap: wrap;
        }

        .i0sbar-key {
            background: #fff;
            border: 1px solid #d1d5da;
            border-radius: 12px;
            padding: 20px 32px;
            font-size: 32px;
            font-weight: 700;
            box-shadow: 0 8px 0 #e1e4e8, 0 15px 20px rgba(0,0,0,0.05);
            min-width: 100px;
            transition: all 0.1s ease;
            user-select: none;
        }

        .i0sbar-key:active {
            transform: translateY(4px);
            box-shadow: 0 4px 0 #e1e4e8, 0 5px 10px rgba(0,0,0,0.05);
        }

        .i0sbar-plus {
            font-size: 32px;
            align-self: center;
            color: var(--i0sbar-border);
        }

        /* 核心内容区 */
        .i0sbar-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .i0sbar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .i0sbar-card {
            background: var(--i0sbar-card-bg);
            border: 1px solid var(--i0sbar-border);
            border-radius: var(--i0sbar-radius);
            padding: 40px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .i0sbar-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--i0sbar-shadow);
        }

        .i0sbar-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: #111;
        }

        .i0sbar-code-block {
            background: var(--i0sbar-code-bg);
            padding: 20px;
            border-radius: 8px;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            font-size: 14px;
            margin-top: 16px;
            overflow-x: auto;
            border: 1px solid var(--i0sbar-border);
        }

        /* 表格交互演示区 */
        .i0sbar-table-demo-section {
            background-color: #f8f9fa;
            border-radius: 32px;
            margin: 0 24px;
            padding: 80px 48px;
        }

        .i0sbar-table-container {
            background: #fff;
            padding: 32px;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.03);
            overflow-x: auto;
        }

        table.i0sbar-custom-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 500px;
        }

        table.i0sbar-custom-table th, table.i0sbar-custom-table td {
            border: 1px solid #dfe2e5;
            padding: 12px 16px;
            text-align: left;
        }

        table.i0sbar-custom-table th {
            background-color: #f6f8fa;
            font-weight: 600;
        }

        /* 工作流展示 */
        .i0sbar-workflow {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-top: 64px;
            align-items: flex-start;
        }

        .i0sbar-workflow-item {
            flex: 1;
            min-width: 300px;
        }

        .i0sbar-badge {
            display: inline-block;
            padding: 4px 12px;
            background: #e3f2fd;
            color: var(--i0sbar-accent);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        /* 页脚 */
        .i0sbar-footer {
            background: #111;
            color: #fff;
            padding: 80px 24px;
            margin-top: 96px;
        }

        .i0sbar-footer-content {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 48px;
        }

        .i0sbar-footer-brand h2 {
            font-size: 28px;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .i0sbar-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .i0sbar-footer-column h4 {
            margin-bottom: 24px;
            color: #888;
            font-size: 14px;
        }

        .i0sbar-footer-column ul {
            list-style: none;
        }

        .i0sbar-footer-column ul li {
            margin-bottom: 12px;
        }

        .i0sbar-footer-column ul li a {
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .i0sbar-footer-column ul li a:hover {
            color: #fff;
        }

        .i0sbar-copyright {
            max-width: 1100px;
            margin: 48px auto 0;
            padding-top: 32px;
            border-top: 1px solid #333;
            color: #666;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .i0sbar-nav-container {
                height: auto;
                padding: 16px;
            }
            .i0sbar-menu {
                display: none; /* 简化起见移动端隐藏或可做汉堡菜单 */
            }
            .i0sbar-hero {
                padding-top: 120px;
            }
            .i0sbar-table-demo-section {
                padding: 40px 24px;
            }
        }

        /* 动画增强 */
        .i0sbar-fade-in {
            animation: fadeIn 0.8s ease forwards;
        }

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