/* 基础样式重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        line-height: 1.6;
        color: #ffffff;
        background: linear-gradient(135deg, #000046, #23a6d5, #4ffbd8);
        background-size: 400% 400%;
        animation: gradientAnimation 15s linear infinite;
        overflow-x: hidden;
    }

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

    header {
        text-align: center;
        padding: 50px 20px;
        background: rgba(0, 0, 0, 0.5);
    }

    header h1 {
        font-size: 3em;
        font-weight: bold;
        margin-bottom: 20px;
        background: linear-gradient(45deg, #ff8a00, #e52e71);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

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

    section {
        min-height: 100vh;
        padding: 60px 20px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .section-content {
        max-width: 1200px;
        width: 100%;
        background: rgba(255, 255, 255, 0.1);
        padding: 40px;
        border-radius: 10px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    }

    .section-content h2 {
        font-size: 2.5em;
        margin-bottom: 20px;
        text-align: center;
        color: #ff8a00;
    }

    .section-content p {
        font-size: 1.1em;
        margin-bottom: 20px;
        text-align: justify;
    }

    .section-content h3 {
        font-size: 2em;
        margin-top: 30px;
        margin-bottom: 15px;
        color: #e52e71;
    }

    pre {
        background: #2d2d2d;
        padding: 20px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        color: #f8f8f2;
        font-family: 'Courier New', Courier, monospace;
    }

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

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

    th, td {
        padding: 15px;
        text-align: center;
    }

    th {
        background: #ff8a00;
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin-top: 30px;
    }

    .image-gallery img {
        width: 150px;
        height: 150px;
        object-fit: cover;
        border-radius: 10px;
        transition: transform 0.3s;
    }

    .image-gallery img:hover {
        transform: scale(1.1);
    }

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

    .code-preview code {
        display: block;
        white-space: pre-wrap;
    }

    footer {
        text-align: center;
        padding: 30px 20px;
        background: rgba(0, 0, 0, 0.7);
        color: #ffffff;
    }

    footer p {
        font-size: 1em;
    }

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

        .section-content h2 {
            font-size: 2em;
        }

        .section-content h3 {
            font-size: 1.8em;
        }
    }

    @media (max-width: 1200px) {
        .image-gallery img {
            width: 130px;
            height: 130px;
        }
    }

    @media (max-width: 1024px) {
        .section-content {
            padding: 30px;
        }
    }

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

        .section-content h2 {
            font-size: 1.8em;
        }

        .image-gallery img {
            width: 120px;
            height: 120px;
        }
    }

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

        .section-content h2 {
            font-size: 1.5em;
        }

        .image-gallery {
            flex-direction: column;
            align-items: center;
        }

        .image-gallery img {
            width: 100px;
            height: 100px;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.2em;
        }

        .section-content h2 {
            font-size: 1.2em;
        }

        .section-content p, .section-content h3 {
            font-size: 1em;
        }

        .image-gallery img {
            width: 80px;
            height: 80px;
        }
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        margin-top: 20px;
        background: #ff8a00;
        color: #ffffff;
        border: none;
        border-radius: 5px;
        text-decoration: none;
        font-size: 1em;
        transition: background 0.3s;
    }

    .btn:hover {
        background: #e52e71;
    }