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

    .main-content {
        background-color: #f8fafc;
        color: #2D3748;
        line-height: 1.6;
        font-size: 16px;
    }

    .app-container {
        display: flex;
        min-height: 100vh;
        width: 100%;
        max-width: 100%;
        margin: 0;
        background-color: #FFFFFF;
        box-shadow: none;
    }

    /* 移动端菜单按钮默认样式 - 大屏幕上隐藏 */
    .mobile-menu-btn {
        display: none;
    }

    /* 侧边栏遮罩层默认样式 - 大屏幕上隐藏 */
    .sidebar-overlay {
        display: none;
    }

    /* 侧边栏样式 */
    .sidebar {
        width: 260px;
        background: #FFFFFF;
        border-right: 1px solid #E2E8F0;
        display: flex;
        flex-direction: column;
        flex-shrink: 0;
        position: sticky;
        top: 80px;
        height: 100vh;
        overflow-y: auto;
        transition: all 0.3s ease;
        z-index: 100;
    }

    .sidebar.collapsed {
        width: 70px;
    }

    .sidebar.collapsed .nav-text,
    .sidebar.collapsed .sidebar-subtitle,
    .sidebar.collapsed .logo-text {
        display: none;
    }

    .sidebar.collapsed .logo {
        justify-content: center;
    }

    .sidebar.collapsed .sidebar-header {
        padding: 20px 15px;
    }

    .sidebar-header {
        padding: 30px 25px 25px;
        border-bottom: 1px solid #E2E8F0;
        position: relative;
    }

    .sidebar-user {
        padding: 10px 35px;
        border-bottom: 1px solid #e5e7eb;
    }

    .sidebar.collapsed .sidebar-user {
        display: none;
    }

    .user_data {
        padding: 3px 0;
    }

    .logo {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 8px;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, #4071FD, #6C63FF);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 18px;
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 18px;
        font-weight: 700;
        color: #2D3748;
        white-space: nowrap;
        overflow: hidden;
    }

    .logo-text span {
        color: #4071FD;
    }

    .sidebar-subtitle {
        font-size: 14px;
        color: #718096;
        line-height: 1.5;
        white-space: nowrap;
        overflow: hidden;
    }

    /* 折叠按钮 */
    .collapse-btn {
        position: absolute;
        right: 15px;
        top: 35px;
        width: 24px;
        height: 24px;
        border-radius: 6px;
        background: #F7FAFC;
        border: 1px solid #E2E8F0;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: #718096;
        transition: all 0.2s ease;
        font-size: 12px;
    }

    .collapse-btn:hover {
        background: #EBF0FF;
        color: #4071FD;
        border-color: #4071FD;
    }

    .sidebar.collapsed .collapse-btn {
        right: 50%;
        transform: translateX(50%);
        top: 25px;
    }

    .sidebar.collapsed .collapse-btn i {
        transform: rotate(180deg);
    }

    .nav-section {
        padding: 25px 0;
        border-bottom: 1px solid #E2E8F0;
    }

    .nav-list {
        list-style: none;
    }

    .nav-item {
        margin: 4px 15px;
    }

    .nav-link {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 14px 20px;
        text-decoration: none;
        color: #2D3748;
        border-radius: 8px;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
        overflow: hidden;
        font-size: 14px;
    }

    .nav-link:hover {
        background-color: #EBF0FF;
        color: #4071FD;
        transform: translateX(4px);
    }

    .sidebar.collapsed .nav-link:hover {
        transform: translateX(2px);
    }

    .nav-icon {
        width: 22px;
        text-align: center;
        font-size: 16px;
        opacity: 0.8;
        flex-shrink: 0;
    }

    .nav-text {
        flex: 1;
        font-size: 14px;
        white-space: nowrap;
        overflow: hidden;
    }

    .nav-badge {
        background-color: #4071FD;
        color: white;
        font-size: 11px;
        padding: 3px 8px;
        border-radius: 20px;
        font-weight: 600;
        letter-spacing: 0.5px;
    }

    /* 自定义滚动条 */
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }

    ::-webkit-scrollbar-track {
        background: #F7FAFC;
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb {
        background: #CBD5E0;
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #A0AEC0;
    }

    /* 代码高亮 */
    .code-example {
        background-color: #2D3748;
        color: #E2E8F0;
        border-radius: 8px;
        padding: 20px;
        margin: 20px 0;
        font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
        font-size: 14px;
        line-height: 1.6;
        overflow-x: auto;
    }

    .code-keyword {
        color: #63B3ED;
    }

    .code-function {
        color: #68D391;
    }

    .code-string {
        color: #FBB6CE;
    }

    .code-comment {
        color: #A0AEC0;
    }

    /* 主内容区样式 */
    .main-content {
        flex: 1;
        padding: 0;
        background-color: #f9fafc;
        transition: all 0.3s ease;
        font-family: 'Segoe UI', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    }

    .container {
        width: 100%;
        max-width: 100%;
        margin: 0;
        padding: 20px;
    }

    /* 标题样式 */
    .main-content h2 {
        font-size: 18px;
        font-weight: 700;
        color: #2D3748;
        margin-bottom: 8px;
        letter-spacing: -0.3px;
        margin-top: 15px;
    }

    .main-content h3 {
        font-size: 18px;
        font-weight: 600;
        color: #2D3748;
        margin: 40px 0 20px;
        padding-bottom: 12px;
        border-bottom: 1px solid #E2E8F0;
    }

    .main-content h4 {
        font-size: 16px;
        font-weight: 600;
        color: #2D3748;
        margin: 15px 0 10px;
    }

    /* 表单样式 */
    .form-group {
        margin-bottom: 24px;
    }

    .form-group label {
        display: block;
        font-size: 14px;
        font-weight: 600;
        color: #2D3748;
        margin-bottom: 8px;
    }

    .form-control {
        width: 100%;
        padding: 14px 16px;
        font-size: 14px;
        border: 1px solid #E2E8F0;
        border-radius: 8px;
        background-color: #FFFFFF;
        color: #2D3748;
        transition: all 0.2s ease;
    }

    .form-control:focus {
        outline: none;
        border-color: #4071FD;
        box-shadow: 0 0 0 3px rgba(64, 113, 253, 0.1);
    }

    textarea.form-control {
        min-height: 200px;
        resize: vertical;
        font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
        font-size: 14px;
        line-height: 1.5;
        padding: 16px;
    }

    /* 按钮样式 */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 28px;
        font-size: 14px;
        font-weight: 600;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        letter-spacing: 0.3px;
    }

    .btn-primary {
        background-color: #4071FD;
        color: white;
    }

    .btn-primary:hover {
        background-color: #2D5DFD;
        transform: translateY(-2px);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }

    .btn-primary:active {
        transform: translateY(0);
    }

    .btn-default {
        background-color: #F7FAFC;
        color: #2D3748;
        border: 1px solid #E2E8F0;
    }

    .btn-default:hover {
        background-color: #EBF0FF;
        color: #4071FD;
        border-color: #4071FD;
        transform: translateY(-2px);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }

    .submit {
        min-width: 120px;
    }

    /* 结果区域样式 */
    .result-container {
        margin-top: 30px;
    }

    .result {
        background-color: #FFFFFF;
        border-radius: 12px;
        padding: 24px;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
        margin-bottom: 16px;
        border: 1px solid #E2E8F0;
        min-height: 200px;
        font-size: 14px;
    }

    #resultTips {
        font-size: 14px;
        color: #718096;
        text-align: left;
        padding: 12px;
        background-color: #FEFCE8;
        border-radius: 8px;
        border: 1px solid #FDE68A;
        line-height: 1.5;
    }

    /* 使用案例样式 */
    .row {
        display: flex;
        flex-wrap: wrap;
        margin: 0;
    }

    .col-lg-12 {
        flex: 0 0 100%;
        max-width: 100%;
        padding: 0;
    }
    
    .col-lg-6 {
        flex: 0 0 50%;
        max-width: 50%;
        padding: 0;
    }

    .gray {
        color: #718096;
        font-weight: 500;
        margin-right: 8px;
        font-size: 14px;
    }

    /* 代码块样式 */
    .code-block {
        color: #E2E8F0;
        border-radius: 8px;
        padding: 20px;
        margin: 18px 0;
        font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
        font-size: 14px;
        line-height: 1.5;
        border: 1px solid #E2E8F0;
        position: relative;
        max-width: 100%;
        box-sizing: border-box;
    }

    .code-block .language-label {
        position: absolute;
        top: -10px;
        background: #4071FD;
        color: white;
        padding: 3px 10px;
        border-radius: 15px;
        font-size: 14px;
        font-weight: 600;
        text-transform: uppercase;
    }

    .code-block pre {
        margin: 0;
        white-space: pre-wrap;
        tab-size: 4;
        font-size: 14px;
    }

    /* 代码语法高亮 */
    .code-block .c-keyword {
        color: #63B3ED;
    }

    .code-block .c-function {
        color: #68D391;
    }

    .code-block .c-string {
        color: #FBB6CE;
    }

    .code-block .c-comment {
        color: #A0AEC0;
    }

    .code-block .c-number {
        color: #F6AD55;
    }

    .code-block .c-preprocessor {
        color: #B794F4;
    }

    .code-block .py-keyword {
        color: #63B3ED;
    }

    .code-block .py-builtin {
        color: #68D391;
    }

    .code-block .py-string {
        color: #FBB6CE;
    }

    .code-block .py-comment {
        color: #A0AEC0;
    }

    .code-block .py-number {
        color: #F6AD55;
    }

    /* 结果框样式 */
    .example-result {
        background-color: #F7FAFC;
        border-radius: 8px;
        padding: 20px;
        margin: 12px 0;
        border: 1px solid #E2E8F0;
        position: relative;
        font-size: 14px;
        max-width: 100%;
        box-sizing: border-box;
    }

    .example-result .result-label {
        position: absolute;
        top: -10px;
        left: 15px;
        background: #48BB78;
        color: white;
        padding: 3px 10px;
        border-radius: 15px;
        font-size: 14px;
        font-weight: 600;
    }

    /* 使用场景样式 */
    .flex_col_center {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 20px;
        box-sizing: border-box;
    }
    
    .img-responsive {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
        margin-bottom: 20px;
        transition: transform 0.3s ease;
        box-sizing: border-box;
    }

    .img-responsive:hover {
        transform: scale(1.02);
    }

    .col-sm-4 {
        flex: 0 0 33.333%;
        max-width: 33.333%;
        padding: 0 15px;
    }

    /* 分割线样式 */
    hr {
        border: none;
        height: 1px;
        background-color: #E2E8F0;
        margin: 20px 0 30px;
    }

    /* 859px断点 - 移动端响应式 */
    @media (max-width: 859px) {
        .app-container {
            margin: 0;
            max-width: 100%;
            box-shadow: none;
        }
        
        /* 侧边栏 - 移动端模式 */
        .sidebar {
            position: fixed;
            left: -260px;
            top: 80px;
            height: 100vh;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            width: 260px;
        }
        
        .sidebar.active {
            left: 0;
        }
        
        /* 在移动端禁用折叠功能 */
        .sidebar.collapsed {
            width: 260px;
        }
        
        .sidebar.collapsed .nav-text,
        .sidebar.collapsed .sidebar-subtitle,
        .sidebar.collapsed .logo-text {
            display: block;
        }
        
        .sidebar.collapsed .logo {
            justify-content: flex-start;
        }
        
        .sidebar.collapsed .collapse-btn {
            right: 15px;
            transform: none;
        }
        
        .sidebar.collapsed .collapse-btn i {
            transform: rotate(0);
        }
        
        .collapse-btn {
            display: none;
        }
        
        /* 主内容区 - 占满宽度 */
        .main-content {
            width: 100%;
            margin-left: 0;
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: block;
            position: fixed;
            top: 15px;
            left: 15px;
            z-index: 999;
            width: 40px;
            height: 40px;
            background: #4071FD;
            color: white;
            border-radius: 8px;
            border: none;
            font-size: 18px;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(64, 113, 253, 0.3);
        }
        
        /* 调整容器和内边距 */
        .main-content > .container {
            padding: 20px;
        }
        
        /* 调整字体大小 */
        h2 {
            font-size: 16px;
        }
        
        h3 {
            font-size: 16px;
            margin: 30px 0 15px;
        }
        
        h4 {
            font-size: 14px;
        }
        
        /* 调整内容间距 */
        .result,
        .example-result {
            padding: 16px;
        }
        
        .code-block {
            padding: 16px;
            font-size: 12px;
        }
        
        .code-block pre {
            font-size: 12px;
        }
        
        .code-block .language-label,
        .example-result .result-label {
            font-size: 12px;
        }
        
        .flex_col_center {
            padding: 15px;
        }
        
        /* 调整表单元素 */
        .btn {
            padding: 10px 20px;
            font-size: 14px;
        }
        
        .form-control {
            padding: 12px 14px;
            font-size: 14px;
        }
        
        textarea.form-control {
            min-height: 180px;
        }
        
        /* 调整布局 */
        .col-lg-6 {
            flex: 0 0 100%;
            max-width: 100%;
            padding: 0;
        }
        
        .row {
            margin: 0;
        }
        
        .col-sm-4 {
            flex: 0 0 100%;
            max-width: 100%;
            margin-bottom: 30px;
            padding: 0;
        }
        
        /* 遮罩层 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }
        
        .sidebar-overlay.active {
            display: block;
        }
    }

    /* 加载状态 */
    .btn[data-loading-text] {
        position: relative;
    }

    /*.btn[data-loading-text]:after {
        content: '';
        position: absolute;
        width: 16px;
        height: 16px;
        border: 2px solid rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        border-top-color: white;
        animation: spin 1s linear infinite;
        margin-left: 8px;
    }*/

    @keyframes spin {
        to {
            transform: rotate(360deg);
        }
    }

    /* 表单元素组 */
    .form-group:last-child {
        display: flex;
        align-items: center;
        gap: 16px;
        flex-wrap: wrap;
    }

    #model.form-control {
        width: auto;
        min-width: 150px;
        display: inline-block;
        font-size: 14px;
    }

    /* 下拉框样式 */
    select.form-control {
        appearance: auto;
        -webkit-appearance: auto;
        -moz-appearance: auto;
        background-color: #FFFFFF;
        border: 2px #4071FD solid;
        border-radius: 8px;
        padding: 12px 16px;
        font-size: 14px;
        color: #2D3748;
        display: block;
        height: auto;
        width: 100%;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    select.form-control::-ms-expand {
        display: block;
    }

    select.form-control:hover {
        border-color: #2563eb;
        box-shadow: 0 0 0 3px rgba(64, 113, 253, 0.1);
    }

    select.form-control:focus {
        outline: none;
        border-color: #4071FD;
        box-shadow: 0 0 0 3px rgba(64, 113, 253, 0.1);
    }

    /* 下拉框选项样式 */
    select.form-control option {
        background-color: #FFFFFF;
        color: #333;
        padding: 8px 12px;
        border: none;
        font-size: 14px;
    }

    select.form-control option:hover {
        background-color: #f0f4ff;
        color: #333;
    }

    /* 辅助类 */
    .mt-4 {
        margin-top: 24px;
    }

    .mb-4 {
        margin-bottom: 24px;
    }

    .mb-2 {
        margin-bottom: 12px;
    }

    hr {
        margin-top: 28px;
    }
    
    /* 通用文本样式 */
    .main-content p, .main-content li, .main-content span, .main-content div {
        font-size: 14px;
    }

    /* SQL转换按钮样式 */
    .sql_button {
        min-width: 80px;
    }