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

    body {
        background: linear-gradient(135deg, #1B1B1B, #121212);
        color: #FFFFFF;
        font-family: 'Roboto', sans-serif;
        line-height: 1.6;
        padding: 20px;
    }

    a {
        color: #29B6F6;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #00BCD4;
    }

    header {
        text-align: center;
        padding: 50px 0;
        background: linear-gradient(135deg, #2B2B2B, #1E1E1E);
        border-radius: 10px;
        margin-bottom: 40px;
    }

    header h1 {
        font-size: 2.5em;
        font-weight: bold;
        background: linear-gradient(90deg, #29B6F6, #00BCD4, #29B6F6);
        -webkit-background-clip: text;
        color: transparent;
    }

    nav {
        margin-top: 20px;
    }

    nav ul {
        list-style: none;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
    }

    nav ul li {
        margin: 0 15px;
    }

    main {
        max-width: 1200px;
        margin: 0 auto;
    }

    .card {
        background-color: #1E1E1E;
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 30px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.7);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: 8px;
        margin-bottom: 15px;
    }

    .card h2 {
        font-size: 1.8em;
        margin-bottom: 10px;
        color: #29B6F6;
    }

    .card p {
        font-size: 1em;
        color: #D3D3D3;
    }

    pre {
        background-color: #2B2B2B;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin: 20px 0;
    }

    code {
        color: #00BCD4;
        font-family: 'Courier New', Courier, monospace;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table, th, td {
        border: 1px solid #444;
    }

    th, td {
        padding: 12px;
        text-align: left;
    }

    th {
        background-color: #333;
        color: #29B6F6;
    }

    tr:nth-child(even) {
        background-color: #2B2B2B;
    }

    footer {
        text-align: center;
        padding: 30px 0;
        background: linear-gradient(135deg, #2B2B2B, #1E1E1E);
        border-radius: 10px;
        margin-top: 40px;
    }

    footer p {
        color: #AAAAAA;
        font-size: 0.9em;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.3em;
        }

        .card h2 {
            font-size: 1.6em;
        }
    }

    @media (max-width: 1200px) {
        .card {
            padding: 18px;
        }

        header {
            padding: 40px 0;
        }
    }

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

        nav ul li {
            margin: 10px 0;
        }

        .card {
            padding: 16px;
        }
    }

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

        .card h2 {
            font-size: 1.4em;
        }

        pre {
            padding: 12px;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 1.8em;
        }

        nav ul li {
            margin: 8px 0;
        }

        .card h2 {
            font-size: 1.2em;
        }

        pre {
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        body {
            padding: 10px;
        }

        header h1 {
            font-size: 1.5em;
        }

        .card {
            padding: 12px;
        }

        .card h2 {
            font-size: 1em;
        }

        pre {
            padding: 10px;
        }
    }

    /* 动画效果 */
    .button {
        background: linear-gradient(90deg, #29B6F6, #00BCD4);
        color: #FFFFFF;
        padding: 10px 20px;
        border: none;
        border-radius: 4px;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .button:hover {
        background: linear-gradient(90deg, #00BCD4, #29B6F6);
        transform: scale(1.05);
    }

    /* 视觉提示 */
    .notice {
        text-align: center;
        font-size: 1em;
        color: #FF5722;
        margin-bottom: 20px;
    }