/* 基础样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0D47A1, #000000);
        color: #FFFFFF;
        line-height: 1.6;
        overflow-x: hidden;
    }

    /* 背景动画 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    body {
        background: radial-gradient(circle, rgba(255, 87, 34, 0.3), transparent),
                    linear-gradient(45deg, #0D47A1, #000000);
        background-size: 400% 400%;
        animation: aurora-move 15s linear infinite;
    }

    /* 容器 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 标题样式 */
    h1, h2, h3 {
        font-family: 'Roboto', sans-serif;
        font-weight: bold;
        color: #FFFFFF;
        text-align: center;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        margin-top: 40px;
    }

    h2 {
        font-size: 2em;
        margin-top: 30px;
    }

    h3 {
        font-size: 1.5em;
        margin-top: 25px;
    }

    /* 段落样式 */
    p {
        font-size: 1em;
        margin-bottom: 15px;
        padding: 0 10px;
    }

    /* 代码块样式 */
    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #66BB6A;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    table, th, td {
        border: 1px solid rgba(255, 255, 255, 0.5);
    }

    th, td {
        padding: 10px;
        text-align: left;
    }

    th {
        background-color: rgba(0, 0, 0, 0.5);
    }

    /* 列表样式 */
    ul {
        list-style-type: disc;
        padding-left: 40px;
        margin-bottom: 20px;
    }

    li {
        margin-bottom: 10px;
    }

    /* 按钮样式 */
    .button {
        background-color: #66BB6A;
        color: #FFFFFF;
        border: none;
        padding: 10px 20px;
        cursor: pointer;
        border-radius: 5px;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .button:hover {
        background-color: #388E3C;
        transform: scale(1.05);
    }

    /* 图标样式 */
    .icon {
        transition: transform 0.3s ease-in-out;
        display: inline-block;
    }

    .icon:hover {
        transform: scale(1.2);
    }

    /* 图片样式 */
    img {
        max-width: 100%;
        height: auto;
        border-radius: 10px;
        margin: 10px 0;
    }

    /* 模态框样式 */
    .modal {
        display: none; 
        position: fixed; 
        z-index: 1000; 
        left: 0;
        top: 0;
        width: 100%; 
        height: 100%; 
        overflow: auto; 
        background-color: rgba(0,0,0,0.5); 
    }

    .modal-content {
        background-color: rgba(255, 255, 255, 0.1);
        margin: 10% auto; 
        padding: 20px;
        border: 1px solid #888;
        width: 80%; 
        border-radius: 10px;
    }

    .close {
        color: #FFFFFF;
        float: right;
        font-size: 28px;
        font-weight: bold;
        cursor: pointer;
    }

    .close:hover,
    .close:focus {
        color: #FF5722;
        text-decoration: none;
    }

    /* 动态背景 */
    .dynamic-background {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: url('https://images.gptkong.com/demo/sample1.png') repeat;
        opacity: 0.05;
        animation: moveBackground 60s linear infinite;
        z-index: -1;
    }

    @keyframes moveBackground {
        from {background-position: 0 0;}
        to {background-position: 1000px 1000px;}
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.2em;
        }

        h2 {
            font-size: 1.8em;
        }

        h3 {
            font-size: 1.3em;
        }
    }

    @media (max-width: 1200px) {
        .container {
            padding: 15px;
        }

        h1 {
            font-size: 2em;
        }
    }

    @media (max-width: 1024px) {
        nav {
            flex-direction: column;
            align-items: center;
        }

        .sidebar {
            display: none;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 1.8em;
        }

        h2 {
            font-size: 1.6em;
        }

        h3 {
            font-size: 1.2em;
        }

        .button {
            padding: 8px 16px;
        }
    }

    @media (max-width: 480px) {
        body {
            padding: 10px;
        }

        h1 {
            font-size: 1.5em;
        }

        h2 {
            font-size: 1.4em;
        }

        h3 {
            font-size: 1em;
        }

        .button {
            padding: 6px 12px;
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.2em;
        }

        h2 {
            font-size: 1.2em;
        }

        h3 {
            font-size: 0.9em;
        }

        p, li {
            font-size: 0.9em;
        }
    }

    /* 提示信息样式 */
    .reference-note {
        text-align: center;
        font-style: italic;
        margin: 20px 0;
        color: #FFEB3B;
    }

    /* 表格自适应 */
    table {
        width: 100%;
        overflow-x: auto;
    }

    /* 链接样式 */
    a {
        color: #FF5722;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }