/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        line-height: 1.6;
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: 'Roboto', sans-serif;
        color: #ffffff;
        margin-bottom: 20px;
    }

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

    h2 {
        font-size: 2em;
        border-bottom: 2px solid #ffffff;
        padding-bottom: 10px;
    }

    h3 {
        font-size: 1.75em;
        color: #00ffcc;
    }

    p {
        font-size: 1em;
        margin-bottom: 15px;
    }

    ul, ol {
        margin-left: 20px;
        margin-bottom: 15px;
    }

    a {
        color: #00ffcc;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #ffffff;
    }

    /* 样式参考提示 */
    .style-reference {
        text-align: center;
        font-size: 1.2em;
        margin: 20px 0;
        color: #ffdd57;
    }

    /* 导航选项卡 */
    .tab {
        display: flex;
        justify-content: center;
        background: rgba(255, 255, 255, 0.1);
        border-bottom: 1px solid #ffffff;
        animation: gradientAnimation 15s linear infinite;
    }

    .tab-item {
        padding: 15px 30px;
        cursor: pointer;
        font-weight: bold;
        color: #ffffff;
        transition: background 0.3s ease, color 0.3s ease;
    }

    .tab-item:hover, .tab-item.active {
        background: rgba(0, 255, 204, 0.3);
        color: #000000;
        border-bottom: 3px solid #00ffcc;
    }

    /* 内容区域 */
    .content {
        padding: 40px 20px;
        max-width: 1200px;
        margin: 0 auto;
        background: rgba(0, 0, 0, 0.5);
        border-radius: 10px;
    }

    .content-section {
        margin-bottom: 40px;
    }

    .content-section img {
        max-width: 100%;
        height: auto;
        border-radius: 5px;
        margin: 20px 0;
    }

    /* 代码块样式 */
    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #00ffcc;
    }

    code {
        color: #00ffcc;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

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

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

    th {
        background: rgba(0, 255, 204, 0.3);
    }

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

    .fade-in {
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.5s ease-in-out;
    }

    .fade-in.active {
        opacity: 1;
        transform: translateY(0);
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .content {
            padding: 30px 15px;
        }
    }

    @media (max-width: 1200px) {
        .tab-item {
            padding: 12px 25px;
            font-size: 0.9em;
        }

        h1 {
            font-size: 2.2em;
        }

        h2 {
            font-size: 1.75em;
        }
    }

    @media (max-width: 1024px) {
        .tab {
            flex-direction: column;
            align-items: center;
        }

        .tab-item {
            width: 100%;
            text-align: center;
            border-bottom: 1px solid #ffffff;
        }

        .content {
            padding: 25px 10px;
        }
    }

    @media (max-width: 768px) {
        .tab {
            flex-direction: column;
        }

        .tab-item {
            padding: 10px 20px;
            font-size: 0.85em;
        }

        h1 {
            font-size: 2em;
        }

        h2 {
            font-size: 1.5em;
        }
    }

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

        h2 {
            font-size: 1.3em;
        }

        .tab-item {
            padding: 8px 15px;
            font-size: 0.8em;
        }

        .content {
            padding: 20px 8px;
        }
    }

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

        h2 {
            font-size: 1.1em;
        }

        .tab-item {
            padding: 6px 10px;
            font-size: 0.7em;
        }

        .content {
            padding: 15px 5px;
        }
    }

    /* 图片样式 */
    .gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .gallery img {
        width: calc(25% - 10px);
        border-radius: 5px;
    }

    @media (max-width: 768px) {
        .gallery img {
            width: calc(50% - 10px);
        }
    }

    @media (max-width: 480px) {
        .gallery img {
            width: 100%;
        }
    }