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

    body {
        font-family: 'Roboto', sans-serif;
        line-height: 1.6;
        background: linear-gradient(135deg, #121212, #4B0082, #00FFFF);
        color: #ffffff;
        overflow-x: hidden;
        padding: 20px;
    }

    /* 标题样式 */
    h1, h2, h3, h4, h5, h6 {
        font-weight: bold;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        margin-top: 20px;
    }

    h2 {
        font-size: 2em;
        margin-top: 40px;
        color: #FFD700;
    }

    h3 {
        font-size: 1.75em;
        margin-top: 30px;
        color: #87d3f8;
    }

    h4 {
        font-size: 1.5em;
        margin-top: 25px;
        color: #FFA500;
    }

    /* 段落样式 */
    p {
        margin-bottom: 20px;
        line-height: 1.8;
    }

    /* 代码块样式 */
    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #FFD700;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 30px;
    }

    th, td {
        border: 1px solid #ffffff;
        padding: 12px;
        text-align: left;
    }

    th {
        background: rgba(0, 0, 0, 0.5);
    }

    /* 卡片布局 */
    .card-container {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        margin-top: 40px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 20px;
        flex: 1 1 calc(33.333% - 40px);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        background: rgba(255, 255, 255, 0.2);
    }

    .card-title {
        font-size: 1.5em;
        margin-bottom: 10px;
        color: #FFD700;
    }

    .card-description {
        font-size: 1em;
        margin-bottom: 15px;
        color: #87d3f8;
    }

    .card button {
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        background: linear-gradient(45deg, #FF7F50, #FFD700);
        color: #ffffff;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .card button:hover {
        background: linear-gradient(45deg, #FFD700, #FF7F50);
        transform: scale(1.05);
    }

    /* 图片样式 */
    .images-container {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 30px;
    }

    .images-container img {
        width: 100%;
        max-width: 320px;
        border-radius: 8px;
    }

    /* 提示信息 */
    .reference-note {
        text-align: center;
        font-size: 1em;
        margin-top: 40px;
        color: #FFA500;
    }

    /* 动画效果 */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .animate-element {
        animation: fadeIn 0.8s ease-in-out;
        opacity: 0;
    }

    /* 交互动画 */
    .button-animate {
        transition: background 0.5s, transform 0.5s;
    }

    .button-animate:hover {
        background: linear-gradient(45deg, #FFD700, #FF7F50);
        transform: scale(1.1);
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .card {
            flex: 1 1 calc(50% - 40px);
        }
    }

    @media (max-width: 1200px) {
        .card {
            flex: 1 1 calc(50% - 40px);
        }
    }

    @media (max-width: 1024px) {
        .card {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 768px) {
        .card-container {
            flex-direction: column;
            align-items: center;
        }

        .card {
            width: 100%;
        }

        .images-container {
            flex-direction: column;
            align-items: center;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 2em;
        }

        h2 {
            font-size: 1.75em;
        }

        h3 {
            font-size: 1.5em;
        }

        .card {
            padding: 15px;
        }
    }

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

        h2 {
            font-size: 1.5em;
        }

        h3 {
            font-size: 1.25em;
        }

        .card {
            padding: 10px;
        }

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

        .card-description {
            font-size: 0.9em;
        }

        .reference-note {
            font-size: 0.9em;
        }
    }

    /* 滚动触发动画 */
    .scroll-animate {
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.8s ease-in-out;
    }

    .scroll-animate.visible {
        opacity: 1;
        transform: translateY(0);
    }

    /* 页脚样式 */
    footer {
        text-align: center;
        margin-top: 50px;
        padding: 20px;
        background: rgba(0, 0, 0, 0.3);
        border-radius: 10px;
    }

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