/* 导入字体 */
    @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700&family=Open+Sans:wght@400&display=swap');

    /* 基础样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Open Sans', sans-serif;
        line-height: 1.6;
        color: #ffffff;
        background: linear-gradient(135deg, #0A2463, #4C9DFD);
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: 'Montserrat', sans-serif;
        color: #FFC857;
        margin-bottom: 20px;
    }

    p {
        margin-bottom: 20px;
        color: #f0f0f0;
    }

    a {
        color: #FFAA33;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 网格系统 */
    .row {
        display: flex;
        flex-wrap: wrap;
        margin: -10px;
    }

    .col-1 { width: 8.33%; padding: 10px; }
    .col-2 { width: 16.66%; padding: 10px; }
    .col-3 { width: 25%; padding: 10px; }
    .col-4 { width: 33.33%; padding: 10px; }
    .col-6 { width: 50%; padding: 10px; }
    .col-12 { width: 100%; padding: 10px; }

    /* Hero Banner */
    .hero-banner {
        height: 100vh;
        background: linear-gradient(135deg, #0A2463, #4C9DFD);
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
    }

    .hero-banner::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(255,135,87,0.5), transparent);
        animation: aurora-move 15s linear infinite;
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 3rem;
        color: #ffffff;
        margin-bottom: 20px;
    }

    .hero-content p {
        font-size: 1.2rem;
        color: #dcdcdc;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 15px 30px;
        background: linear-gradient(to right, #FFC857, #FFAA33);
        color: #0A2463;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background 0.3s, box-shadow 0.3s;
        font-size: 1rem;
    }

    .btn:hover {
        box-shadow: 0 4px 15px rgba(255,170,51,0.4);
    }

    /* 模块样式 */
    .module {
        padding: 60px 0;
    }

    .module:nth-child(even) {
        background: rgba(10, 36, 99, 0.8);
    }

    .module:nth-child(odd) {
        background: rgba(76, 157, 253, 0.8);
    }

    .module h2 {
        text-align: center;
        margin-bottom: 40px;
        color: #FFC857;
    }

    .module p {
        max-width: 800px;
        margin: 0 auto 20px;
        text-align: center;
    }

    /* 图标与插图 */
    .icon {
        display: inline-block;
        width: 60px;
        height: 60px;
        background-color: #FFC857;
        border-radius: 50%;
        text-align: center;
        line-height: 60px;
        color: #0A2463;
        font-size: 30px;
        margin-bottom: 20px;
    }

    .graphic {
        max-width: 100%;
        height: auto;
        margin: 0 auto;
        display: block;
    }

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

    table, th, td {
        border: 1px solid #FFC857;
    }

    th, td {
        padding: 12px;
        text-align: center;
    }

    th {
        background: #FFAA33;
        color: #0A2463;
    }

    td {
        background: rgba(255, 255, 255, 0.1);
    }

    /* 代码块样式 */
    pre {
        background: #1e1e1e;
        padding: 20px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        color: #FFAA33;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 图片样式 */
    .image-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    .image-grid img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 10px;
    }

    /* 示例展示 */
    .example-section {
        background: rgba(10, 36, 99, 0.9);
        padding: 40px 0;
    }

    .example-section h2 {
        text-align: center;
        color: #FFAA33;
        margin-bottom: 30px;
    }

    /* 底部样式 */
    footer {
        background: #0A2463;
        color: #ffffff;
        text-align: center;
        padding: 20px 0;
    }

    /* 提示信息 */
    .reference-note {
        text-align: center;
        font-size: 1rem;
        color: #FFC857;
        margin-top: 20px;
    }

    /* 动画关键帧 */
    @keyframes aurora-move {
        0% { transform: translateY(0); }
        50% { transform: translateY(-20px); }
        100% { transform: translateY(0); }
    }

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

        .btn {
            padding: 12px 25px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 1200px) {
        .col-4 {
            width: 50%;
        }

        .hero-content h1 {
            font-size: 2.2rem;
        }
    }

    @media (max-width: 1024px) {
        .col-3 {
            width: 50%;
        }

        .hero-content h1 {
            font-size: 2rem;
        }
    }

    @media (max-width: 768px) {
        .col-6 {
            width: 100%;
        }

        .hero-content h1 {
            font-size: 1.8rem;
        }
    }

    @media (max-width: 480px) {
        .hero-content h1 {
            font-size: 1.5rem;
        }

        .btn {
            padding: 10px 20px;
            font-size: 0.8rem;
        }
    }

    @media (max-width: 320px) {
        .hero-content h1 {
            font-size: 1.2rem;
        }

        .btn {
            padding: 8px 16px;
            font-size: 0.7rem;
        }
    }