/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #0A1F3E, #7B68EE);
        color: #ffffff;
        overflow-x: hidden;
    }
    
    h1, h2, h3, h4 {
        font-family: 'Roboto Mono', monospace;
        color: #39FF14;
        margin-bottom: 20px;
    }
    
    p, ul, li, table, pre, code {
        font-family: 'Open Sans', sans-serif;
        line-height: 1.6;
        margin-bottom: 20px;
    }
    
    a {
        color: #39FF14;
        text-decoration: none;
    }
    
    a:hover {
        text-decoration: underline;
    }
    
    /* 布局 */
    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        padding: 40px;
    }
    
    .header, .footer {
        text-align: center;
        padding: 20px;
        background: rgba(0, 0, 0, 0.5);
    }
    
    .content {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 10px;
    }
    
    /* 按钮样式 */
    .btn {
        position: relative;
        padding: 10px 20px;
        background: #7B68EE;
        border: none;
        border-radius: 5px;
        color: #ffffff;
        cursor: pointer;
        overflow: hidden;
        transition: background 0.3s ease;
    }
    
    .btn:hover {
        background: #39FF14;
        box-shadow: 0 0 10px #39FF14;
    }
    
    .btn::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: all 0.5s ease;
    }
    
    .btn:hover::after {
        width: 200%;
        height: 200%;
    }
    
    /* 代码块样式 */
    pre {
        background: #000000;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }
    
    code {
        color: #39FF14;
        font-family: 'Roboto Mono', monospace;
    }
    
    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
    }
    
    th, td {
        border: 1px solid #39FF14;
        padding: 10px;
        text-align: left;
    }
    
    th {
        background: #0A1F3E;
    }
    
    /* 图片样式 */
    img {
        width: 100%;
        height: auto;
        border-radius: 10px;
    }
    
    /* 动画 */
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    
    .fade-in {
        animation: fadeIn 2s ease-in-out;
    }
    
    /* 响应式设计 */
    @media (max-width: 768px) {
        .container {
            grid-template-columns: 1fr;
            padding: 20px;
        }
    }
    
    @media (max-width: 480px) {
        h1 {
            font-size: 24px;
        }
        h2 {
            font-size: 20px;
        }
        h3 {
            font-size: 18px;
        }
    }
    
    /* 背景粒子效果 */
    .particles {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: transparent;
        z-index: -1;
    }