/* 基础样式 */
    body {
        margin: 0;
        font-family: 'Roboto Mono', monospace;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        line-height: 1.6;
    }

    header {
        background: linear-gradient(45deg, #4facfe, #00f2fe);
        padding: 20px;
        text-align: center;
        font-size: 2em;
        font-weight: bold;
        box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    }

    nav {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin: 20px 0;
    }

    nav a {
        color: #ffffff;
        text-decoration: none;
        padding: 10px 20px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 5px;
        transition: background 0.3s;
    }

    nav a:hover {
        background: rgba(255, 255, 255, 0.3);
    }

    .container {
        padding: 20px;
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        width: calc(33% - 40px);
        box-shadow: 0 4px 6px rgba(0,0,0,0.3);
        transition: transform 0.3s, background 0.3s;
    }

    .card:hover {
        transform: scale(1.05);
        background: rgba(255, 255, 255, 0.2);
    }

    .card img {
        width: 100%;
        border-radius: 10px;
    }

    .card h3 {
        margin-top: 10px;
        font-size: 1.5em;
    }

    .card p {
        margin-top: 10px;
        font-size: 1em;
    }

    .example-section {
        background: rgba(0, 0, 0, 0.2);
        padding: 20px;
        border-radius: 10px;
        margin: 40px 0;
    }

    .example-section h2 {
        text-align: center;
        margin-bottom: 20px;
    }

    .example-section pre {
        background: #2a2a2a;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    footer {
        text-align: center;
        padding: 20px;
        background: linear-gradient(45deg, #ff4e50, #f9d423);
        color: #000000;
        font-size: 1.2em;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .card {
            width: calc(40% - 40px);
        }
    }

    @media (max-width: 1200px) {
        .card {
            width: calc(45% - 40px);
        }
    }

    @media (max-width: 1024px) {
        .card {
            width: calc(60% - 40px);
        }
    }

    @media (max-width: 768px) {
        nav {
            flex-direction: column;
            align-items: center;
        }

        .card {
            width: calc(80% - 40px);
        }
    }

    @media (max-width: 480px) {
        .card {
            width: 100%;
        }

        header {
            font-size: 1.5em;
        }

        footer {
            font-size: 1em;
        }
    }

    @media (max-width: 320px) {
        .card {
            padding: 15px;
        }

        nav a {
            padding: 8px 16px;
            font-size: 0.9em;
        }
    }