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

    :root {
        --main-green: #34C759;
        --tech-purple: #6A1B9A;
        --ice-blue: #007AFF;
        --accent-orange: #FF5722;
        --accent-blue: #00E676;
        --background-gradient: linear-gradient(135deg, var(--main-green), var(--ice-blue));
        --transition-speed: 0.3s;
        --font-natural: 'Playfair Display', serif;
        --font-tech: 'Roboto Mono', monospace;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-tech);
        background: var(--background-gradient);
        color: #333;
        line-height: 1.6;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 20px;
    }

    header {
        width: 100%;
        max-width: 1200px;
        text-align: center;
        padding: 20px 0;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 15px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        margin-bottom: 20px;
    }

    header h1 {
        font-family: var(--font-natural);
        font-size: 2.5rem;
        color: var(--tech-purple);
        margin-bottom: 10px;
    }

    header p {
        font-size: 1.2rem;
        color: var(--main-green);
    }

    main {
        width: 100%;
        max-width: 1200px;
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section {
        background: rgba(255, 255, 255, 0.9);
        padding: 20px;
        border-radius: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        position: relative;
    }

    .section h2 {
        font-family: var(--font-natural);
        font-size: 2rem;
        color: var(--tech-purple);
        margin-bottom: 15px;
    }

    .section p {
        font-family: var(--font-tech);
        font-size: 1rem;
        margin-bottom: 15px;
        color: #555;
    }

    .section pre {
        background: #f5f5f5;
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        font-family: var(--font-tech);
        font-size: 0.9rem;
        margin-bottom: 15px;
    }

    .section code {
        background: #e8e8e8;
        padding: 2px 4px;
        border-radius: 4px;
        font-family: var(--font-tech);
    }

    .module {
        margin-bottom: 2rem;
        padding: 1.5rem;
        border-radius: 15px;
        background-color: rgba(255, 255, 255, 0.8);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .icon {
        width: 48px;
        height: 48px;
        background-image: linear-gradient(to bottom, var(--tech-purple), var(--accent-blue));
        background-size: cover;
        border-radius: 50%;
        margin-right: 10px;
    }

    .button {
        position: relative;
        display: inline-block;
        padding: 0.75rem 1.5rem;
        background-color: var(--accent-blue);
        color: white;
        border: none;
        border-radius: 25px;
        transition: transform var(--transition-speed) ease, background-color var(--transition-speed) ease;
        cursor: pointer;
    }

    .button:hover {
        transform: scale(1.1);
        background-color: var(--tech-purple);
    }

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

    @keyframes aurora-move {
        0% { transform: translateY(0); }
        50% { transform: translateY(-50px); }
        100% { transform: translateY(0); }
    }

    /* 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;
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        body {
            padding: 10px;
        }
        header h1 {
            font-size: 1.5rem;
        }
        .section h2 {
            font-size: 1.5rem;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 2rem;
        }
        .section h2 {
            font-size: 1.75rem;
        }
    }

    @media (max-width: 768px) {
        main {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 1024px) {
        main {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 1200px) {
        main {
            grid-template-columns: 1fr 1fr 1fr;
        }
    }

    @media (min-width: 1440px) {
        header h1 {
            font-size: 3rem;
        }
        .section h2 {
            font-size: 2.5rem;
        }
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 15px;
    }

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

    th, td {
        padding: 10px;
        text-align: left;
    }

    th {
        background-color: var(--accent-blue);
        color: white;
    }

    /* 链接样式 */
    a {
        color: var(--tech-purple);
        text-decoration: none;
        transition: color var(--transition-speed);
    }

    a:hover {
        color: var(--accent-orange);
    }

    /* 提示信息 */
    .reference-note {
        text-align: center;
        font-size: 1rem;
        color: #777;
        margin-top: 20px;
    }