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

    body {
        font-family: 'Roboto', 'Montserrat', sans-serif;
        line-height: 1.6;
        letter-spacing: 0.5px;
        background: radial-gradient(circle at top right, #1E1E1E, #4A90E2, transparent);
        color: #FFFFFF;
        padding: 20px;
        animation: aurora-move 15s linear infinite;
    }

    @keyframes aurora-move {
        0% {
            background-position: 0% 50%;
        }
        50% {
            background-position: 100% 50%;
        }
        100% {
            background-position: 0% 50%;
        }
    }

    header {
        text-align: center;
        padding: 50px 0;
        background: linear-gradient(135deg, #4A90E2, #1E1E1E);
        border-radius: 15px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
        margin-bottom: 40px;
    }

    header h1 {
        font-size: 3em;
        color: #FFC107;
        margin-bottom: 10px;
    }

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

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

    nav a {
        color: #4A90E2;
        text-decoration: none;
        font-size: 1em;
        padding: 10px 20px;
        border: 2px solid #4A90E2;
        border-radius: 25px;
        transition: all 0.3s ease;
    }

    nav a:hover {
        background-color: #FFC107;
        color: #1E1E1E;
        transform: scale(1.05);
    }

    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        padding: 20px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 12px 24px rgba(0,0,0,0.3);
    }

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

    .card h2 {
        font-size: 1.5em;
        color: #FFC107;
        margin-bottom: 10px;
    }

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

    article {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }

    article h2 {
        font-size: 2em;
        color: #FFC107;
        margin-bottom: 20px;
    }

    article h3 {
        font-size: 1.5em;
        color: #4A90E2;
        margin-top: 20px;
        margin-bottom: 10px;
    }

    article p {
        font-size: 1em;
        color: #FFFFFF;
        margin-bottom: 15px;
    }

    article pre {
        background: #2C2C2C;
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 15px;
    }

    article code {
        color: #FFC107;
        font-family: 'Courier New', Courier, monospace;
    }

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

    article table, article th, article td {
        border: 1px solid #4A90E2;
    }

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

    article th {
        background-color: #4A90E2;
        color: #FFFFFF;
    }

    article ul {
        list-style-type: disc;
        margin-left: 20px;
        color: #FFFFFF;
        margin-bottom: 15px;
    }

    footer {
        text-align: center;
        padding: 20px;
        margin-top: 40px;
        background: linear-gradient(135deg, #4A90E2, #1E1E1E);
        border-radius: 15px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    }

    footer p {
        font-size: 1em;
        color: #FFFFFF;
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
        header h1 {
            font-size: 2em;
        }

        nav {
            flex-direction: column;
            gap: 10px;
        }

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

        article {
            padding: 20px;
        }

        footer {
            padding: 15px;
        }
    }

    @media (min-width: 1440px) {
        body {
            padding: 40px;
        }

        header h1 {
            font-size: 4em;
        }

        nav a {
            font-size: 1.2em;
            padding: 15px 30px;
        }

        .container {
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
        }

        article h2 {
            font-size: 2.5em;
        }

        article h3 {
            font-size: 2em;
        }

        footer p {
            font-size: 1.2em;
        }
    }