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

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #87CEEB, #4B0082);
        color: #ffffff;
        line-height: 1.6;
        padding: 20px;
    }

    a {
        color: #ffffff;
        text-decoration: none;
        transition: color 0.3s ease;
        rel: nofollow;
    }

    a:hover {
        color: #87CEEB;
    }

    /* 容器 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 20px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        backdrop-filter: blur(10px);
    }

    /* 标题 */
    h1, h2, h3, h4 {
        font-weight: 300;
        text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
    }

    h1 {
        font-size: 3rem;
        color: rgba(255, 255, 255, 0.9);
    }

    h2 {
        font-size: 2.5rem;
        color: rgba(255, 255, 255, 0.85);
    }

    h3 {
        font-size: 2rem;
        color: rgba(255, 255, 255, 0.8);
    }

    h4 {
        font-size: 1.5rem;
        color: rgba(255, 255, 255, 0.75);
    }

    /* 段落 */
    p {
        margin-bottom: 1em;
        padding: 10px;
        background: rgba(255, 255, 255, 0.2);
        border-radius: 10px;
    }

    /* 代码块 */
    pre {
        background: rgba(0, 0, 0, 0.5);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
    }

    code {
        color: #00FFAA;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 列表 */
    ul {
        list-style: disc inside;
        margin-bottom: 1em;
    }

    li {
        margin-bottom: 0.5em;
    }

    /* 表格 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 1em;
    }

    th, td {
        border: 1px solid rgba(255, 255, 255, 0.3);
        padding: 10px;
        text-align: left;
    }

    th {
        background: rgba(0, 0, 0, 0.3);
    }

    /* 卡片 */
    .card {
        background: rgba(255, 255, 255, 0.3);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
    }

    /* 图片样式 */
    .image-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
    }

    .image-grid img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        transition: transform 0.3s ease;
    }

    .image-grid img:hover {
        transform: scale(1.05);
    }

    /* 响应式设计 */
    @media (min-width: 320px) {
        h1 {
            font-size: 2rem;
        }
    }

    @media (min-width: 480px) {
        h1 {
            font-size: 2.5rem;
        }
    }

    @media (min-width: 768px) {
        .container {
            grid-template-columns: 1fr 2fr;
        }

        h1 {
            font-size: 3rem;
        }
    }

    @media (min-width: 1024px) {
        .container {
            grid-template-columns: 1fr 3fr;
        }
    }

    @media (min-width: 1200px) {
        .container {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    @media (min-width: 1440px) {
        .container {
            grid-template-columns: repeat(4, 1fr);
        }
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: rgba(135, 206, 235, 0.8);
        color: #ffffff;
        border: none;
        border-radius: 25px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .btn:hover {
        box-shadow: 0 0 10px rgba(135, 206, 235, 0.8);
        transform: scale(1.1);
    }

    /* 提示信息 */
    .reference-note {
        font-size: 1rem;
        color: rgba(255, 255, 255, 0.7);
        text-align: center;
        margin-top: 20px;
    }

    /* 滚动动画 */
    .fade-in {
        animation: fadeIn 2s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }