/* 基本样式重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

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

    body {
        font-family: 'Playfair Display', serif;
        line-height: 1.6;
        color: #333;
        background: linear-gradient(135deg, #90EE90, #0074D9);
        background-attachment: fixed;
    }

    header {
        background: linear-gradient(135deg, #90EE90, #0074D9);
        padding: 60px 20px;
        text-align: center;
        color: #fff;
        position: relative;
    }

    header h1 {
        font-family: 'Roboto', sans-serif;
        font-size: 2.5rem;
        margin-bottom: 20px;
        animation: fadeIn 2s ease-in-out;
    }

    header p {
        font-size: 1.2rem;
        max-width: 800px;
        margin: 0 auto;
    }

    main {
        padding: 40px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    section {
        margin-bottom: 60px;
    }

    .grid-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }

    .grid-item {
        background: rgba(255, 255, 255, 0.8);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        transition: transform 0.3s ease;
    }

    .grid-item:hover {
        transform: translateY(-10px);
    }

    h2, h3, h4 {
        font-family: 'Roboto', sans-serif;
        color: #2E8B57;
        margin-bottom: 15px;
    }

    h2 {
        font-size: 2rem;
        border-bottom: 2px solid #2E8B57;
        padding-bottom: 10px;
    }

    h3 {
        font-size: 1.5rem;
    }

    h4 {
        font-size: 1.2rem;
    }

    p {
        font-family: 'Playfair Display', serif;
        font-size: 1rem;
        margin-bottom: 15px;
        text-align: justify;
    }

    pre {
        background: #f4f4f4;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 15px;
    }

    code {
        font-family: 'Roboto', sans-serif;
        background: #eaeaea;
        padding: 2px 4px;
        border-radius: 3px;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 15px;
    }

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

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

    th {
        background: #2E8B57;
        color: #fff;
    }

    ul {
        list-style: disc inside;
        margin-bottom: 15px;
    }

    li {
        margin-bottom: 10px;
    }

    .code-example {
        background: #272822;
        color: #f8f8f2;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Roboto', monospace;
        margin-bottom: 15px;
    }

    img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    footer {
        background: #2E8B57;
        color: #fff;
        text-align: center;
        padding: 20px;
    }

    footer a {
        color: #fff;
        text-decoration: none;
        margin: 0 10px;
        transition: color 0.3s ease;
    }

    footer a:hover {
        color: #90EE90;
    }

    /* 动画效果 */
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* 微交互动效 */
    button {
        background-color: #8BC34A;
        color: #fff;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: background-color 0.3s ease;
        font-family: 'Roboto', sans-serif;
    }

    button:hover {
        background-color: #4CAF50;
    }

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

        main {
            padding: 30px 15px;
        }
    }

    @media (max-width: 1200px) {
        header h1 {
            font-size: 2rem;
        }

        h2 {
            font-size: 1.8rem;
        }
    }

    @media (max-width: 1024px) {
        .grid-container {
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        }
    }

    @media (max-width: 768px) {
        header {
            padding: 40px 10px;
        }

        header h1 {
            font-size: 1.8rem;
        }

        h2 {
            font-size: 1.5rem;
        }
    }

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

        h2 {
            font-size: 1.3rem;
        }

        p {
            font-size: 0.9rem;
        }
    }

    @media (max-width: 320px) {
        header {
            padding: 30px 5px;
        }

        header h1 {
            font-size: 1.2rem;
        }

        h2 {
            font-size: 1.1rem;
        }

        p {
            font-size: 0.8rem;
        }
    }

    /* 特殊提示 */
    .reference-note {
        background: rgba(255, 255, 255, 0.9);
        padding: 15px;
        border-left: 5px solid #2E8B57;
        margin-bottom: 20px;
        font-style: italic;
    }

    /* 内部链接样式 */
    a[rel="nofollow"] {
        color: #0074D9;
        text-decoration: underline;
    }