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

    body {
        font-family: 'Montserrat', sans-serif;
        background: linear-gradient(135deg, #00264d, #6a0dad, #00ff8f);
        background-size: 400% 400%;
        animation: gradient-animation 15s ease infinite;
        color: #e0e0e0;
        line-height: 1.6;
        padding: 20px;
    }

    @keyframes gradient-animation {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    h1, h2, h3, h4 {
        font-family: 'Roboto', sans-serif;
        color: white;
        text-shadow: 0px 4px 6px rgba(0, 0, 0, 0.5);
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        margin-top: 20px;
    }

    h2 {
        font-size: 2em;
        margin-top: 40px;
    }

    h3 {
        font-size: 1.5em;
        margin-top: 30px;
    }

    p {
        margin-bottom: 20px;
    }

    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #00ff8f;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
    }

    .grid-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        padding: 20px 0;
    }

    .grid-item {
        background-color: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 15px;
        box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, background-color 0.5s ease;
    }

    .grid-item:hover {
        transform: scale(1.05);
        background-color: rgba(255, 165, 0, 0.3);
    }

    .circle-icon {
        width: 50px;
        height: 50px;
        background: radial-gradient(circle, #007bff, #00c853);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        color: white;
        font-weight: bold;
        margin-bottom: 15px;
    }

    .interactive-button {
        background: linear-gradient(to right, #ff9800, #ff5722);
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .interactive-button:hover {
        box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.3);
        transform: translateY(-2px);
    }

    img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        margin-bottom: 20px;
    }

    .sample-article {
        background-color: rgba(0, 0, 0, 0.5);
        padding: 20px;
        border-radius: 10px;
        margin-top: 40px;
    }

    .sample-article h2 {
        text-align: center;
    }

    .notice {
        text-align: center;
        font-size: 1.2em;
        margin-bottom: 30px;
        color: #ffeb3b;
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 2em;
        }
        h2 {
            font-size: 1.75em;
        }
        .grid-container {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.8em;
        }
        h2 {
            font-size: 1.5em;
        }
        .interactive-button {
            width: 100%;
            padding: 15px;
        }
    }

    /* 代码块样式 */
    pre {
        background-color: rgba(0, 0, 0, 0.7);
        border-left: 5px solid #00ff8f;
        padding: 15px;
        border-radius: 5px;
    }

    /* 链接样式 */
    a {
        color: #00c853;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #ff9800;
    }