/* 基本样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Open Sans', sans-serif;
        background-color: #F5F5F5;
        color: #0A2463;
    }

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

    body {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(10, 36, 99, 0.9);
        padding: 15px 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }

    .navbar a {
        color: #FFC700;
        text-decoration: none;
        margin: 0 15px;
        font-weight: bold;
    }

    .navbar a:hover {
        color: #FFD83D;
        transition: color 0.3s;
    }

    /* 主要内容区域 */
    .hero {
        height: 100vh;
        background: linear-gradient(135deg, #0A2463, #FFC700);
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
        color: white;
        padding: 0 20px;
    }

    .hero h1 {
        font-family: 'Roboto Slab', serif;
        font-size: 3em;
        margin-bottom: 20px;
    }

    .hero p {
        font-size: 1.2em;
        line-height: 1.5;
    }

    /* 核心功能卡片 */
    .features {
        padding: 60px 20px;
        background-color: #FFFFFF;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }

    .card {
        flex: 1 1 30%;
        background: #F5F5F5;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(10, 36, 99, 0.1);
        transition: transform 0.3s, box-shadow 0.3s;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 16px rgba(10, 36, 99, 0.2);
    }

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

    .card h3 {
        margin-top: 15px;
        font-family: 'Roboto Slab', serif;
        color: #0A2463;
    }

    .card p {
        margin-top: 10px;
        line-height: 1.6;
    }

    /* 数据展示 */
    .data-visualization {
        padding: 60px 20px;
        background: #0A2463;
        color: white;
    }

    .data-visualization h2 {
        text-align: center;
        margin-bottom: 40px;
        font-family: 'Roboto Slab', serif;
    }

    .chart-container {
        max-width: 800px;
        margin: 0 auto;
    }

    /* 示例展示 */
    .sample-article {
        padding: 60px 20px;
        background-color: #FFFFFF;
    }

    .sample-article h2 {
        font-family: 'Roboto Slab', serif;
        margin-bottom: 20px;
    }

    .sample-article h3 {
        margin-top: 30px;
        font-family: 'Roboto Slab', serif;
        color: #0A2463;
    }

    .sample-article p {
        line-height: 1.8;
        margin-top: 10px;
    }

    .sample-article pre {
        background: #F5F5F5;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .sample-article code {
        font-family: 'Courier New', Courier, monospace;
        color: #FFC700;
    }

    /* 用户案例 */
    .user-cases {
        padding: 60px 20px;
        background: linear-gradient(135deg, #FFC700, #FFD83D);
        color: #0A2463;
        text-align: center;
    }

    .user-cases h2 {
        font-family: 'Roboto Slab', serif;
        margin-bottom: 20px;
    }

    .user-cases ul {
        list-style: none;
        padding: 0;
    }

    .user-cases li {
        margin: 10px 0;
        font-size: 1.1em;
    }

    /* 页脚 */
    .footer {
        padding: 20px;
        background: #0A2463;
        color: #FFFFFF;
        text-align: center;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .hero h1 {
            font-size: 2.5em;
        }
    }

    @media (max-width: 1200px) {
        .container {
            flex-direction: row;
        }
    }

    @media (max-width: 1024px) {
        .container {
            flex-direction: row;
        }
    }

    @media (max-width: 768px) {
        .card {
            flex: 1 1 45%;
        }
    }

    @media (max-width: 480px) {
        .card {
            flex: 1 1 100%;
        }

        .navbar {
            flex-direction: column;
        }

        .navbar a {
            margin: 10px 0;
        }
    }

    @media (max-width: 320px) {
        .hero h1 {
            font-size: 1.8em;
        }

        .hero p {
            font-size: 1em;
        }
    }