/* 基础样式 */
    body {
        margin: 0;
        font-family: 'Nunito Sans', sans-serif;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        line-height: 1.6;
    }
    h1, h2, h3 {
        font-family: 'Roboto', sans-serif;
        color: #ffffff;
    }
    h1 {
        font-size: 2.5em;
        text-align: center;
        margin: 20px 0;
        background: linear-gradient(90deg, #00008B, #00FFFF);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    /* 导航选项卡 */
    .tabs {
        display: flex;
        justify-content: center;
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1000;
    }
    .tab {
        margin: 0 15px;
        cursor: pointer;
        padding: 10px 20px;
        transition: color 0.3s ease;
    }
    .tab:hover {
        color: #FFA500;
        text-decoration: underline;
    }
    /* 内容区 */
    .content {
        padding: 100px 20px 20px 20px;
        display: none;
        animation: fadeIn 1s ease-in-out;
    }
    .active {
        display: block;
    }
    /* 示例数据展示 */
    .sample-data {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        margin: 20px 0;
    }
    .sample-data h2 {
        text-align: center;
        margin-bottom: 15px;
    }
    pre {
        background: #2a2a2a;
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
    }
    code {
        color: #00FF00;
    }
    /* 图片样式 */
    .images {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        margin: 20px 0;
    }
    .images img {
        width: 150px;
        height: 150px;
        object-fit: cover;
        border-radius: 10px;
    }
    /* 动画 */
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    /* 响应式设计 */
    @media (max-width: 768px) {
        .tabs {
            flex-direction: column;
            align-items: center;
        }
        .tab {
            margin: 10px 0;
        }
        .images img {
            width: 100px;
            height: 100px;
        }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .images img {
            width: 120px;
            height: 120px;
        }
    }
    @media (min-width: 1025px) and (max-width: 1440px) {
        .images img {
            width: 140px;
            height: 140px;
        }
    }
    @media (min-width: 1441px) {
        .images img {
            width: 160px;
            height: 160px;
        }
    }
    /* 按钮样式 */
    .btn {
        background: #FFA500;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: background 0.3s ease;
    }
    .btn:hover {
        background: #FF8C00;
    }
    /* 页脚 */
    footer {
        text-align: center;
        padding: 20px;
        background: rgba(0, 0, 0, 0.8);
        position: fixed;
        bottom: 0;
        width: 100%;
    }