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

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
        color: #fff;
        line-height: 1.6;
        padding: 20px;
    }

    header {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.8);
        padding: 10px 20px;
        z-index: 1000;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    header h1 {
        font-size: 24px;
        color: #fff;
    }

    nav a {
        color: #fff;
        margin-left: 15px;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    nav a:hover {
        color: #FFC107;
    }

    .container {
        max-width: 1200px;
        margin: 100px auto 50px;
        padding: 20px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
    }

    h2, h3 {
        color: #FFC107;
        margin-bottom: 15px;
    }

    p {
        margin-bottom: 15px;
        color: #ddd;
    }

    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #00FF7F;
        font-family: 'Courier New', Courier, monospace;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    table, th, td {
        border: 1px solid #FFC107;
    }

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

    th {
        background: #203a43;
    }

    .demo-article {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        margin-bottom: 30px;
    }

    .demo-article h2, .demo-article h3 {
        color: #28A745;
    }

    .images-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
        margin-bottom: 20px;
    }

    .images-grid img {
        width: 100%;
        border-radius: 5px;
        transition: transform 0.3s ease;
    }

    .images-grid img:hover {
        transform: scale(1.05);
    }

    .footer {
        text-align: center;
        padding: 20px;
        background: rgba(0, 0, 0, 0.8);
        border-radius: 10px;
    }

    .footer p {
        color: #ddd;
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    .animated-background {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .container {
            max-width: 1100px;
        }
    }

    @media (max-width: 1200px) {
        .container {
            max-width: 1000px;
        }
    }

    @media (max-width: 1024px) {
        .images-grid {
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        }
    }

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

        nav {
            margin-top: 10px;
        }

        .container {
            margin: 120px 10px 30px;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 20px;
        }

        nav a {
            margin-left: 10px;
            font-size: 14px;
        }

        .images-grid {
            grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 18px;
        }

        nav a {
            margin-left: 5px;
            font-size: 12px;
        }
    }