:root {
            --primary: #3498db;
            --secondary: #2c3e50;
            --accent: #e74c3c;
            --light: #f8f9fa;
            --dark: #212529;
            --success: #2ecc71;
            --warning: #f39c12;
            --danger: #e74c3c;
            --gray: #6c757d;
            --border: #dee2e6;
            --sidebar-width: 280px;
        }
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, #ff9cb9, #ff3b7f);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, #ff8aad, #ff2a72);
}
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Poppins', 'Noto Sans SC', sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background-color: #f5f7fa;
            display: flex;
            min-height: 100vh;
        }
        
        /* 侧边栏样式 */
        .sidebar {
            width: var(--sidebar-width);
            background-color: #f5f7fa;
            color: black;
            height: 100vh;
            position: fixed;
            overflow-y: auto;
            box-shadow: 3px 0 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            z-index: 100;
        }
        
        .sidebar-header {
            padding: 25px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        
        .sidebar-title {
            display: flex;
            align-items: center;
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        
        .sidebar-title i {
            margin-right: 10px;
            color: var(--primary);
        }
        
        .logo-text {
            font-size: 1.8rem;
            font-weight: bold;
            margin-bottom: 5px;
            color: black;
            display: flex;
            align-items: center;
        }
        
        .logo-text i {
            margin-right: 10px;
            font-size: 1.5rem;
        }
        
        .nav-links {
            padding: 20px 0;
        }
        
        .nav-section {
            margin-bottom: 15px;
        }
        
        .nav-heading {
            padding: 10px 20px;
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            color: #655252;
            border-left: 3px solid transparent;
        }
        
        .nav-heading i {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }
        
        .nav-links ul {
            list-style: none;
        }
        
        .nav-links li a {
            display: block;
            padding: 10px 20px 10px 45px;
            color: #715a5a;
            text-decoration: none;
            transition: all 0.2s;
            border-left: 3px solid transparent;
            font-size: 0.95rem;
        }
        
        .nav-links li a:hover {
            background: rgba(255,255,255,0.05);
            color: white;
        }
        
        .nav-links li a.active {
            background: rgba(52, 152, 219, 0.2);
            border-left: 3px solid var(--primary);
            color: white;
        }
        
        .sidebar-footer {
            padding: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.85rem;
            color: #999;
        }
        
        /* 主内容区 */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            padding-left: 20px;
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 20px;
        }
        
        header {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: white;
            padding: 30px 0;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            margin-bottom: 30px;
            border-radius: 0 0 10px 10px;
        }
        
        .logo-container {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .logo {
            width: 80px;
            height: 80px;
            background: white;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-right: 20px;
        }
        
        .logo i {
            font-size: 40px;
            color: var(--primary);
        }
        
        h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        .subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto 20px;
        }
        
        .meta-info {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 20px;
            font-size: 0.9rem;
        }
        
        .meta-item {
            display: flex;
            align-items: center;
        }
        
        .meta-item i {
            margin-right: 8px;
        }
        
        .card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            padding: 25px;
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        
        h2 {
            color: var(--secondary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
            display: flex;
            align-items: center;
        }
        
        h2 i {
            margin-right: 10px;
            color: var(--primary);
        }
        
        h3 {
            color: var(--primary);
            margin: 20px 0 15px;
        }
        
        .flow-section {
            background: #f0f8ff;
            padding: 20px;
            border-radius: 8px;
            margin: 20px 0;
        }
        
        .mermaid-container {
            background: white;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border);
            margin: 20px 0;
            overflow: auto;
        }
        
        pre {
            background: #1e1e1e;
            color: #dcdcdc;
            padding: 15px;
            border-radius: 8px;
            overflow-x: auto;
            margin: 15px 0;
            font-size: 0.9rem;
            position: relative;
            border: 1px solid #3a3a3a;
        }
        
        pre::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 30px;
            background: #2d2d2d;
            border-radius: 8px 8px 0 0;
        }
        
        pre code {
            display: block;
            position: relative;
            z-index: 1;
            padding-top: 30px;
            background: none !important;
        }
        
        code {
            font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
            font-size: 0.9rem;
        }
        
        .inline-code {
            background: #2d2d2d;
            color: #f8f8f2;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.9rem;
            border: 1px solid #3a3a3a;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        th {
            background: var(--primary);
            color: white;
            text-align: left;
            padding: 12px 15px;
        }
        
        td {
            padding: 10px 15px;
            border-bottom: 1px solid var(--border);
        }
        
        tr:nth-child(even) {
            background: #f8f9fa;
        }
        
        tr:hover {
            background: #e9f7fe;
        }
        
        .info-box {
            background: #e8f4fd;
            border-left: 4px solid var(--primary);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        
        .warning-box {
            background: #fff8e6;
            border-left: 4px solid var(--warning);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        
        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        
        .grid-item {
            background: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }
        
        .grid-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
        }
        
        .grid-item h3 {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .grid-item i {
            margin-right: 10px;
            font-size: 1.2rem;
        }
        
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 10px 20px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            margin: 5px;
            border: none;
            cursor: pointer;
        }
        
        .btn:hover {
            background: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .btn-secondary {
            background: var(--secondary);
        }
        
        .btn-secondary:hover {
            background: #1a252f;
        }
        
        .btn-accent {
            background: var(--accent);
        }
        
        .btn-accent:hover {
            background: #c0392b;
        }
        
        footer {
            background: var(--secondary);
            color: white;
            padding: 30px 0;
            margin-top: 50px;
            text-align: center;
            border-radius: 10px 10px 0 0;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin: 20px 0;
        }
        
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .copyright {
            margin-top: 20px;
            color: #888;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            
            .sidebar.active {
                transform: translateX(0);
            }
            
            .main-content {
                margin-left: 0;
                padding-left: 0;
            }
            
            .menu-toggle {
                display: block;
                position: fixed;
                top: 20px;
                left: 20px;
                z-index: 101;
                background: var(--primary);
                color: white;
                width: 50px;
                height: 50px;
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 1.5rem;
                box-shadow: 0 4px 10px rgba(0,0,0,0.2);
                cursor: pointer;
            }
        }
        
        @media (min-width: 993px) {
            .menu-toggle {
                display: none;
            }
        }
        
        @media (max-width: 768px) {
            .grid {
                grid-template-columns: 1fr;
            }
            
            .meta-info {
                flex-direction: column;
                gap: 10px;
            }
            
            .footer-links {
                flex-direction: column;
                gap: 10px;
            }
            
            h1 {
                font-size: 2rem;
            }
        }
        
        /* 代码语言标签 */
        .code-header {
            position: absolute;
            top: 5px;
            left: 15px;
            color: #bbb;
            font-size: 0.8rem;
            z-index: 2;
        }