:root {
        --primary-color: #0A7CF6; /* 科技蓝 */
        --secondary-color: #1C1C1E; /* 深空黑 */
        --accent-color-green: #39FF14; /* 荧光绿 */
        --accent-color-purple: #8A2BE2; /* 镭射紫 */
        --background-gradient: linear-gradient(135deg, #0A7CF6, #8A2BE2);
        --font-primary: 'Roboto', sans-serif;
        --font-secondary: 'Fira Sans', sans-serif;
    }

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

    body {
        font-family: var(--font-primary);
        background-color: var(--secondary-color);
        color: var(--primary-color);
        line-height: 1.6;
        padding: 20px;
    }

    header {
        text-align: center;
        padding: 40px 20px;
        background: var(--background-gradient);
        color: var(--background-color: #FFFFFF);
        border-radius: 10px;
        margin-bottom: 40px;
    }

    header h1 {
        font-family: var(--font-secondary);
        font-size: 2.5rem;
        font-weight: bold;
        margin-bottom: 10px;
    }

    header p {
        font-size: 1.2rem;
        color: #FFFFFF;
    }

    nav {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-bottom: 40px;
    }

    nav a {
        color: #FFFFFF;
        text-decoration: none;
        font-size: 1rem;
        transition: color 0.3s;
    }

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

    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }

    .card {
        background: rgba(28, 28, 30, 0.8);
        padding: 20px;
        border-radius: 10px;
        position: relative;
        overflow: hidden;
        transition: transform 0.3s;
    }

    .card:hover {
        transform: scale(1.05);
    }

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

    .card h3 {
        margin: 15px 0;
        font-family: var(--font-secondary);
        font-size: 1.5rem;
        color: var(--accent-color-purple);
    }

    .card p {
        font-size: 1rem;
        color: #FFFFFF;
    }

    .highlight {
        color: var(--accent-color-green);
        font-weight: bold;
    }

    article {
        background: rgba(28, 28, 30, 0.9);
        padding: 30px;
        border-radius: 10px;
        margin-top: 60px;
    }

    article h2, article h3 {
        font-family: var(--font-secondary);
        color: var(--accent-color-purple);
        margin-bottom: 15px;
    }

    article p {
        margin-bottom: 20px;
        font-size: 1rem;
        color: #FFFFFF;
    }

    article pre {
        background: #2C2C2E;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    article code {
        color: #39FF14;
        font-family: 'Courier New', Courier, monospace;
    }

    footer {
        text-align: center;
        padding: 20px;
        margin-top: 40px;
        background: var(--background-gradient);
        color: #FFFFFF;
        border-radius: 10px;
    }

    footer p {
        font-size: 1rem;
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 2rem;
        }

        nav {
            flex-direction: column;
            align-items: center;
        }

        .container {
            grid-template-columns: 1fr;
        }

        article {
            padding: 20px;
        }
    }

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

        nav a {
            font-size: 0.9rem;
        }

        .card h3 {
            font-size: 1.2rem;
        }

        .card p, article p {
            font-size: 0.9rem;
        }

        footer p {
            font-size: 0.9rem;
        }
    }