/* 基础样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    body {
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        line-height: 1.6;
        padding: 20px;
    }
    
    h1, h2, h3, h4, h5, h6 {
        font-family: 'Roboto', sans-serif;
        color: #ffffff;
    }
    
    a {
        color: #ffcc00;
        text-decoration: none;
    }
    
    a:hover {
        text-decoration: underline;
    }
    
    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.7);
        padding: 15px 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }
    
    .navbar .logo {
        font-size: 1.5em;
        font-weight: bold;
        color: #ffffff;
    }
    
    .navbar ul {
        list-style: none;
        display: flex;
    }
    
    .navbar ul li {
        margin-left: 20px;
    }
    
    .navbar ul li a {
        color: #ffffff;
        font-size: 1em;
        transition: color 0.3s;
    }
    
    .navbar ul li a:hover {
        color: #ffcc00;
    }
    
    /* 主要内容 */
    .container {
        max-width: 1200px;
        margin: 100px auto 50px auto;
        padding: 20px;
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 卡片式布局 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s, box-shadow 0.3s;
    }
    
    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    }
    
    .card img {
        width: 100%;
        border-radius: 10px;
        margin-bottom: 15px;
    }
    
    .card h3 {
        margin-bottom: 10px;
        color: #ffcc00;
    }
    
    .card p {
        font-size: 0.95em;
        color: #f0f0f0;
    }
    
    /* 示例数据展示 */
    .sample-section {
        background: rgba(0, 0, 0, 0.5);
        padding: 30px;
        border-radius: 10px;
    }
    
    .sample-section h2 {
        text-align: center;
        margin-bottom: 20px;
        color: #ffcc00;
    }
    
    .sample-section article {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
    }
    
    .sample-section pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        color: #00ff00;
        font-family: 'Courier New', Courier, monospace;
        margin-bottom: 15px;
    }
    
    .sample-section table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 15px;
    }
    
    .sample-section table, .sample-section th, .sample-section td {
        border: 1px solid #ffffff;
    }
    
    .sample-section th, .sample-section td {
        padding: 10px;
        text-align: left;
    }
    
    .sample-section th {
        background: #2a5298;
    }
    
    /* 响应式设计 */
    @media (min-width: 480px) {
        .container {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    
    @media (min-width: 768px) {
        .container {
            grid-template-columns: repeat(3, 1fr);
        }
    }
    
    @media (min-width: 1024px) {
        .container {
            grid-template-columns: repeat(4, 1fr);
        }
    }
    
    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #ffcc00;
        color: #000000;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background 0.3s;
        margin-top: 10px;
    }
    
    .btn:hover {
        background: #e6b800;
    }
    
    /* 提示信息 */
    .notification {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: rgba(255, 204, 0, 0.9);
        color: #000000;
        padding: 15px 20px;
        border-radius: 5px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        font-size: 0.9em;
    }
    
    /* 侧边导航 */
    .sidebar {
        position: fixed;
        top: 60px;
        left: 0;
        width: 200px;
        background: rgba(0, 0, 0, 0.7);
        padding: 20px;
        border-radius: 0 10px 10px 0;
        display: none;
    }
    
    .sidebar ul {
        list-style: none;
    }
    
    .sidebar ul li {
        margin-bottom: 15px;
    }
    
    .sidebar ul li a {
        color: #ffffff;
        font-size: 1em;
        transition: color 0.3s;
    }
    
    .sidebar ul li a:hover {
        color: #ffcc00;
    }
    
    /* 动画效果 */
    .fade-in {
        animation: fadeIn 1s ease-in-out;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    
    /* 自适应代码块 */
    pre {
        white-space: pre-wrap;
        word-wrap: break-word;
    }
    
    /* 图标样式 */
    .icon {
        width: 24px;
        height: 24px;
        display: inline-block;
        vertical-align: middle;
        margin-right: 8px;
    }
    
    .icon-lock {
        background-image: url('https://images.gptkong.com/demo/sample1.png');
        background-size: cover;
    }
    
    .icon-shield {
        background-image: url('https://images.gptkong.com/demo/sample2.png');
        background-size: cover;
    }