/* 基础样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #0f4c75, #3282b8);
        color: #ffffff;
        line-height: 1.6;
    }

    /* 全局链接样式，添加nofollow属性 */
    a {
        color: #ff9f00;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #e68a00;
    }

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

    /* 头部样式 */
    header {
        background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover;
        height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }

    header::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(15, 76, 117, 0.6);
    }

    header h1 {
        position: relative;
        font-size: 3em;
        color: #ffffff;
        text-align: center;
        z-index: 1;
        animation: fadeInDown 1s ease-out;
    }

    /* 导航栏 */
    nav {
        background-color: #0f4c75;
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1000;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

    nav .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 0;
    }

    nav ul {
        list-style: none;
        display: flex;
        margin: 0;
        padding: 0;
    }

    nav ul li {
        margin-left: 20px;
    }

    nav ul li a {
        font-family: 'Roboto', sans-serif;
        font-weight: bold;
        color: #ffffff;
        transition: color 0.3s ease;
    }

    nav ul li a:hover {
        color: #ff9f00;
    }

    /* 主体内容 */
    main {
        padding: 100px 0 50px 0;
    }

    .section {
        margin-bottom: 50px;
    }

    .section h2 {
        font-family: 'Roboto', sans-serif;
        font-size: 2em;
        margin-bottom: 20px;
        color: #ffffff;
        text-align: center;
        animation: fadeInUp 1s ease-out;
    }

    .section p {
        font-size: 1em;
        color: #d1e8ff;
        text-align: justify;
        padding: 0 20px;
    }

    /* 图文并茂布局 */
    .image-text {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 20px;
    }

    .image-text .text {
        flex: 1 1 50%;
    }

    .image-text .image {
        flex: 1 1 50%;
    }

    .image-text img {
        width: 100%;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        transition: transform 0.3s ease;
    }

    .image-text img:hover {
        transform: scale(1.05);
    }

    /* 示例数据展示 */
    .sample-data {
        background: rgba(50, 130, 184, 0.8);
        padding: 20px;
        border-radius: 8px;
    }

    .sample-data h2 {
        text-align: center;
        color: #ffffff;
    }

    .sample-data ul {
        list-style: disc inside;
        color: #ffffff;
    }

    /* 示例文章展示 */
    .sample-article {
        background: rgba(255, 159, 0, 0.8);
        padding: 20px;
        border-radius: 8px;
    }

    .sample-article h2 {
        text-align: center;
        color: #ffffff;
    }

    .sample-article pre {
        background: #1e2a38;
        padding: 10px;
        border-radius: 4px;
        overflow-x: auto;
        color: #00ff7f;
    }

    .sample-article code {
        font-family: 'Courier New', Courier, monospace;
        color: #00ff7f;
    }

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

    @keyframes fadeInUp {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

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

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

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

        nav ul {
            flex-direction: column;
            align-items: center;
        }

        nav ul li {
            margin: 10px 0;
        }
    }

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

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

    @media (max-width: 480px) {
        .image-text .text, .image-text .image {
            flex: 1 1 100%;
        }

        nav .container {
            padding: 5px 0;
        }

        nav ul li {
            margin-left: 10px;
        }
    }

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

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

    /* 提示信息 */
    .notice {
        text-align: center;
        padding: 10px;
        background: #ff9f00;
        color: #ffffff;
        position: fixed;
        bottom: 0;
        width: 100%;
    }