/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0f2027, #2c5364);
        color: #ffffff;
        line-height: 1.6;
    }

    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px 0;
    }

    /* 头部 */
    header {
        background: radial-gradient(circle, rgba(255,87,34,1) 0%, rgba(116,192,252,1) 100%);
        padding: 60px 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    header h1 {
        font-size: 3em;
        margin-bottom: 20px;
        font-family: 'Poppins', sans-serif;
        font-weight: bold;
    }

    header p {
        font-size: 1.2em;
        max-width: 800px;
        margin: 0 auto;
    }

    /* 导航 */
    nav {
        display: flex;
        justify-content: center;
        gap: 30px;
        margin-top: 30px;
    }

    nav a {
        color: #ffffff;
        text-decoration: none;
        font-size: 1em;
        transition: color 0.3s ease;
    }

    nav a:hover {
        color: #ff5722;
    }

    /* 主内容 */
    main {
        padding: 60px 0;
    }

    main h2 {
        font-size: 2.5em;
        margin-bottom: 20px;
        font-family: 'Poppins', sans-serif;
        font-weight: bold;
        text-align: center;
    }

    main p {
        font-size: 1em;
        margin-bottom: 20px;
        color: #dddddd;
    }

    /* 文章部分 */
    article {
        background: rgba(0, 0, 0, 0.5);
        padding: 30px;
        border-radius: 10px;
        margin-bottom: 40px;
    }

    article h2, article h3, article h4 {
        color: #ff9f1c;
    }

    article pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    article code {
        color: #00e676;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 图片 */
    .images {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin-bottom: 40px;
    }

    .images img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 10px;
    }

    /* 卡片 */
    .cards {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: space-between;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        flex: 1 1 30%;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .card:hover {
        background: rgba(255, 159, 28, 0.3);
        transform: translateY(-5px);
    }

    .card h3 {
        margin-top: 0;
        color: #ff9f1c;
    }

    /* 按钮 */
    .button {
        display: inline-block;
        background: #ff9f1c;
        color: #ffffff;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        text-decoration: none;
        transition: background 0.3s ease, transform 0.3s ease;
        cursor: pointer;
    }

    .button:hover {
        background: #e68a00;
        transform: translateY(-2px);
    }

    /* 仪表盘 */
    .dashboard {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .widget {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }

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

    .background-animation {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
        z-index: -1;
    }

    /* 代码块 */
    .code-block {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    .code-block code {
        color: #00e676;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.5em;
        }
    }

    @media (max-width: 1200px) {
        .cards {
            flex-direction: column;
        }

        .card {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 1024px) {
        nav {
            flex-direction: column;
            gap: 15px;
        }

        main h2 {
            font-size: 2em;
        }
    }

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

        .images img {
            width: 80px;
            height: 80px;
        }

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

    @media (max-width: 480px) {
        header p {
            font-size: 1em;
        }

        .card {
            padding: 15px;
        }

        .button {
            padding: 8px 16px;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.5em;
        }

        main h2 {
            font-size: 1.5em;
        }

        .images img {
            width: 60px;
            height: 60px;
        }
    }

    /* 提示信息 */
    .reference {
        text-align: center;
        font-size: 0.9em;
        color: #cccccc;
        margin-top: 40px;
    }