/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1E3C72, #2A5298);
        color: #FFFFFF;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        font-family: 'Montserrat', sans-serif;
        font-weight: bold;
    }

    h1 {
        font-size: 2.5em;
        margin-bottom: 0.5em;
        text-align: center;
        color: #FFD700;
    }

    h2 {
        font-size: 2em;
        margin-top: 1em;
        margin-bottom: 0.5em;
        color: #FFA500;
    }

    h3 {
        font-size: 1.75em;
        margin-top: 1em;
        margin-bottom: 0.5em;
        color: #FF4500;
    }

    p {
        font-size: 1em;
        margin-bottom: 1em;
    }

    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #00FF00;
    }

    code {
        background: rgba(255, 255, 255, 0.2);
        padding: 2px 4px;
        border-radius: 3px;
        color: #00FF00;
    }

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

    /* 网格布局 */
    .grid {
        display: flex;
        flex-wrap: wrap;
        margin: -10px;
    }

    .grid-item {
        flex: 1 1 25%;
        padding: 10px;
        box-sizing: border-box;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .grid-item {
            flex: 1 1 33.33%;
        }
    }

    @media (max-width: 1200px) {
        .grid-item {
            flex: 1 1 50%;
        }
    }

    @media (max-width: 1024px) {
        .grid-item {
            flex: 1 1 50%;
        }
    }

    @media (max-width: 768px) {
        .grid-item {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 2em;
        }
        h2 {
            font-size: 1.5em;
        }
        h3 {
            font-size: 1.25em;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.75em;
        }
        h2 {
            font-size: 1.25em;
        }
        h3 {
            font-size: 1em;
        }
    }

    /* 按钮样式 */
    button, a.button {
        background: #FF8C00;
        color: #FFFFFF;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        text-decoration: none;
        display: inline-block;
        transition: background 0.3s ease;
    }

    button:hover, a.button:hover {
        background: #FFA500;
    }

    /* 动态粒子效果 */
    .particles {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        background: radial-gradient(circle, rgba(255, 255, 255, 0.05), transparent);
        animation: aurora-move 15s linear infinite;
    }

    @keyframes aurora-move {
        0% { transform: translate(0, 0); }
        50% { transform: translate(50px, 50px); }
        100% { transform: translate(0, 0); }
    }

    /* 视差滚动 */
    .parallax {
        background-image: url('https://images.gptkong.com/demo/sample1.png');
        height: 400px;
        background-attachment: fixed;
        background-position: center;
        background-repeat: no-repeat;
        background-size: cover;
    }

    /* 数据可视化图表 */
    .chart {
        display: flex;
        align-items: flex-end;
        height: 200px;
        margin-bottom: 20px;
    }

    .chart .bar {
        flex: 1;
        margin: 0 5px;
        background: #4CAF50;
        transition: height 0.5s ease;
    }

    .chart .bar:hover {
        background: #66BB6A;
    }

    /* 信息层次 */
    .highlight {
        color: #FFD700;
        font-weight: bold;
    }

    /* 图片样式 */
    img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        margin-bottom: 20px;
    }

    /* 示例展示 */
    .example {
        background: rgba(0, 0, 0, 0.5);
        padding: 20px;
        border-radius: 10px;
        margin-top: 40px;
    }

    .example h2 {
        color: #FFD700;
    }

    .footer {
        text-align: center;
        padding: 20px;
        background: rgba(30, 60, 114, 0.8);
        position: fixed;
        width: 100%;
        bottom: 0;
    }