/* 根变量定义 */
    :root {
        --primary-color: #0A1A2F;
        --secondary-color: #F5F7FA;
        --accent-color: #4CAF50;
        --highlight-color: #FF5722;
        --font-primary: 'Roboto', sans-serif;
        --font-secondary: 'Montserrat', sans-serif;
    }

    /* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-primary);
        background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
        color: var(--secondary-color);
        overflow-x: hidden;
    }

    h1, h2, h3, h4 {
        font-family: var(--font-secondary);
        color: var(--accent-color);
        margin-bottom: 20px;
    }

    p {
        line-height: 1.6;
        margin-bottom: 20px;
        color: #ffffff;
    }

    a {
        color: var(--highlight-color);
        text-decoration: none;
        rel: nofollow;
    }

    a:hover {
        text-decoration: underline;
    }

    /* 布局 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 50px 0;
    }

    header {
        text-align: center;
        padding: 50px 0;
    }

    .section {
        margin-bottom: 60px;
    }

    .grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        backdrop-filter: blur(10px);
        box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: 8px;
        margin-bottom: 15px;
    }

    .card h3 {
        margin-bottom: 10px;
        color: var(--highlight-color);
    }

    .card p {
        color: #e0e0e0;
    }

    /* 按钮样式 */
    .button {
        display: inline-block;
        padding: 10px 20px;
        background-color: var(--accent-color);
        color: #ffffff;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.3s ease, background-color 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .button:hover {
        transform: scale(1.1);
        background-color: var(--highlight-color);
    }

    .button::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 10px;
        height: 10px;
        background-color: var(--highlight-color);
        border-radius: 50%;
        opacity: 0;
        transform: translate(-50%, -50%) scale(0);
        transition: all 0.3s ease-in-out;
    }

    .button:hover::after {
        opacity: 1;
        transform: translate(-50%, -50%) scale(5);
    }

    /* 示例数据展示 */
    .example-section {
        background: rgba(255, 255, 255, 0.2);
        padding: 40px;
        border-radius: 10px;
        backdrop-filter: blur(5px);
    }

    .example-section h2 {
        color: var(--highlight-color);
        margin-bottom: 20px;
    }

    .example-section pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        color: #dcdcdc;
        margin-bottom: 20px;
    }

    .example-section table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    .example-section table, .example-section th, .example-section td {
        border: 1px solid #4CAF50;
    }

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

    .example-section th {
        background-color: var(--accent-color);
        color: #ffffff;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .container {
            width: 95%;
        }
    }

    @media (max-width: 1200px) {
        .container {
            padding: 40px 0;
        }
    }

    @media (max-width: 1024px) {
        .grid {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }

    @media (max-width: 768px) {
        header {
            padding: 30px 0;
        }

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

    @media (max-width: 480px) {
        .grid {
            grid-template-columns: 1fr;
        }

        .example-section pre {
            font-size: 14px;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 24px;
        }

        .button {
            padding: 6px 12px;
        }
    }

    /* 动画效果 */
    .parallax {
        position: relative;
        background-attachment: fixed;
        background-size: cover;
        background-position: center;
    }

    .particle-animation {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        background: transparent;
        animation: particles 10s linear infinite;
    }

    @keyframes particles {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }