/* 基本样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Open Sans', 'Lato', sans-serif;
        background: linear-gradient(135deg, #0A1F44, #2C3E50);
        color: #BDC3C7;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        font-family: 'Poppins', 'Roboto', sans-serif;
        color: #9B59B6;
        margin-top: 0;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        padding: 20px 0;
    }

    h2 {
        font-size: 2em;
        margin-top: 40px;
    }

    h3 {
        font-size: 1.5em;
        margin-top: 30px;
    }

    h4 {
        font-size: 1.2em;
        margin-top: 25px;
    }

    p {
        font-size: 1em;
        margin: 15px 0;
    }

    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: auto;
        padding: 20px;
    }

    /* 模块化网格布局 */
    .grid {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .grid-item {
        flex: 1 1 calc(33.33% - 20px);
        background-color: #2C3E50;
        margin: 10px;
        padding: 20px;
        box-sizing: border-box;
        border-radius: 8px;
        transition: transform 0.3s ease, background-color 0.3s ease;
    }

    .grid-item:hover {
        transform: scale(1.05);
        background-color: #34495E;
    }

    /* 按钮样式 */
    .button {
        background: linear-gradient(to right, #9B59B6, #2ECC71);
        border: none;
        padding: 10px 20px;
        font-weight: bold;
        color: #fff;
        cursor: pointer;
        border-radius: 5px;
        transition: background 0.3s ease;
    }

    .button:hover {
        background: linear-gradient(to right, #2ECC71, #9B59B6);
    }

    /* 链接样式 */
    a {
        color: #BDC3C7;
        text-decoration: none;
        transition: color 0.3s ease, transform 0.3s ease;
    }

    a:hover {
        color: #2ECC71;
        transform: scale(1.1);
    }

    /* 代码块样式 */
    pre {
        background-color: #1A252F;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #ECF0F1;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table, th, td {
        border: 1px solid #34495E;
    }

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

    th {
        background-color: #1A252F;
        color: #9B59B6;
    }

    /* 图片样式 */
    .responsive-img {
        width: 100%;
        height: auto;
        border-radius: 8px;
        margin: 10px 0;
    }

    /* 示例数据展示 */
    .example-section {
        background-color: #2C3E50;
        padding: 20px;
        border-radius: 8px;
        margin: 40px 0;
    }

    .example-section h2 {
        color: #2ECC71;
    }

    .example-data {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .example-item {
        flex: 1 1 calc(50% - 20px);
        background-color: #34495E;
        margin: 10px;
        padding: 15px;
        border-radius: 5px;
    }

    .example-item img {
        width: 100%;
        height: auto;
        border-radius: 5px;
    }

    .example-item p {
        margin: 10px 0 0 0;
        color: #BDC3C7;
    }

    /* 粒子系统 */
    .particles {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        z-index: -1;
    }

    .particle {
        position: absolute;
        width: 5px;
        height: 5px;
        background: #2ECC71;
        border-radius: 50%;
        animation: particle 5s infinite linear;
    }

    @keyframes particle {
        from { transform: translateY(0); opacity: 1; }
        to { transform: translateY(-100vh); opacity: 0; }
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .grid-item {
            flex: 1 1 calc(33.33% - 20px);
        }
    }

    @media (max-width: 1200px) {
        .grid-item {
            flex: 1 1 calc(50% - 20px);
        }
    }

    @media (max-width: 1024px) {
        .grid-item {
            flex: 1 1 calc(50% - 20px);
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 2em;
        }

        h2 {
            font-size: 1.75em;
        }

        .grid-item {
            flex: 1 1 100%;
        }

        .example-item {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.75em;
        }

        h2 {
            font-size: 1.5em;
        }

        .button {
            padding: 8px 16px;
            font-size: 0.9em;
        }

        pre {
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.5em;
        }

        h2 {
            font-size: 1.25em;
        }

        .grid-item, .example-item {
            flex: 1 1 100%;
        }
    }

    /* VR模式入口按钮 */
    .vr-button {
        background: #2ECC71;
        color: #0A1F44;
        padding: 15px 30px;
        border: none;
        border-radius: 50px;
        font-size: 1em;
        cursor: pointer;
        box-shadow: 0 4px 15px rgba(46, 204, 113, 0.4);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .vr-button:hover {
        transform: scale(1.05);
        background: #27AE60;
    }

    /* 页脚样式 */
    footer {
        text-align: center;
        padding: 20px 0;
        background-color: #1A252F;
        color: #BDC3C7;
    }