/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0A192F, #7B61FF, #00FFC6);
        color: #ffffff;
        overflow-x: hidden;
    }

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

    /* 标题样式 */
    h1, h2, h3, h4 {
        font-weight: bold;
        margin-bottom: 20px;
        text-align: center;
        color: #ffffff;
    }

    h1 {
        font-size: 2.5em;
        margin-top: 40px;
    }

    h2 {
        font-size: 2em;
        margin-top: 30px;
    }

    h3 {
        font-size: 1.75em;
        margin-top: 25px;
    }

    h4 {
        font-size: 1.5em;
        margin-top: 20px;
    }

    /* 段落样式 */
    p {
        line-height: 1.6;
        letter-spacing: 0.5px;
        margin-bottom: 20px;
        font-size: 1em;
    }

    /* 代码块样式 */
    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #00FFC6;
        background: rgba(0, 0, 0, 0.7);
        padding: 2px 4px;
        border-radius: 4px;
    }

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

    th, td {
        border: 1px solid #ffffff;
        padding: 10px;
        text-align: center;
    }

    th {
        background: rgba(123, 97, 255, 0.8);
    }

    /* 卡片容器 */
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        margin: 40px 0;
    }

    /* 单个卡片样式 */
    .card {
        background: rgba(10, 25, 47, 0.8);
        border-radius: 12px;
        padding: 20px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
        transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
        position: relative;
        overflow: hidden;
    }

    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.7);
    }

    .card h3 {
        margin-bottom: 15px;
        color: #7B61FF;
    }

    .card p {
        font-size: 0.95em;
        margin-bottom: 20px;
    }

    .card .buttons {
        display: flex;
        justify-content: space-between;
    }

    .card .buttons a {
        text-decoration: none;
        color: #ffffff;
        background: #00FFC6;
        padding: 8px 12px;
        border-radius: 6px;
        transition: background 0.3s ease;
    }

    .card .buttons a:hover {
        background: #7B61FF;
    }

    /* 背景粒子动画 */
    .particle {
        position: absolute;
        width: 8px;
        height: 8px;
        background: rgba(255, 255, 255, 0.5);
        border-radius: 50%;
        animation: float 10s infinite ease-in-out;
    }

    @keyframes float {
        0% {
            transform: translateY(0) translateX(0);
            opacity: 1;
        }
        100% {
            transform: translateY(-200px) translateX(100px);
            opacity: 0;
        }
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% {
            background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        }
        50% {
            background: radial-gradient(circle, rgb(123, 97, 255), transparent);
        }
        100% {
            background: radial-gradient(circle, rgb(0, 255, 198), transparent);
        }
    }

    .background-animation {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -1;
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.2em;
        }

        h2 {
            font-size: 1.8em;
        }

        h3 {
            font-size: 1.6em;
        }

        h4 {
            font-size: 1.4em;
        }

        .container {
            width: 95%;
        }
    }

    @media (max-width: 1200px) {
        .cards {
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        }
    }

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

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

        h2 {
            font-size: 1.6em;
        }

        h3 {
            font-size: 1.4em;
        }

        h4 {
            font-size: 1.2em;
        }

        .cards {
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.8em;
        }

        h2 {
            font-size: 1.4em;
        }

        h3 {
            font-size: 1.2em;
        }

        h4 {
            font-size: 1em;
        }

        .cards {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.6em;
        }

        h2 {
            font-size: 1.2em;
        }

        h3 {
            font-size: 1em;
        }

        h4 {
            font-size: 0.9em;
        }
    }

    /* 提示文本样式 */
    .reference-note {
        text-align: center;
        font-size: 0.9em;
        margin-top: 30px;
        color: #FFD700;
    }

    /* 图片样式 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin: 40px 0;
    }

    .image-gallery img {
        width: 100%;
        max-width: 320px;
        border-radius: 8px;
    }

    /* 示例展示样式 */
    .sample-display {
        background: rgba(0, 0, 0, 0.6);
        padding: 20px;
        border-radius: 10px;
        margin-bottom: 40px;
    }