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

    body {
        font-family: 'Nunito Sans', sans-serif;
        background: linear-gradient(135deg, #0A192F, #1A2A49);
        color: #FFFFFF;
        line-height: 1.6;
        overflow-x: hidden;
    }

    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(10px);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 40px;
        z-index: 1000;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .navbar-logo {
        font-family: 'Poppins', sans-serif;
        font-size: 24px;
        font-weight: bold;
        color: #FFC3A0;
    }

    .navbar-menu a {
        margin-left: 20px;
        text-decoration: none;
        color: #FFFFFF;
        font-size: 16px;
        transition: color 0.3s ease;
    }

    .navbar-menu a:hover {
        color: #FF6F61;
    }

    /* 全屏区域 */
    .section {
        height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 60px 20px;
        position: relative;
    }

    .section-bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, #0A192F, #B2B2B2);
        z-index: -1;
    }

    .section-content {
        max-width: 1200px;
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }

    /* 卡片模块 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        padding: 20px;
        flex: 1 1 calc(33.333% - 40px);
        min-width: 280px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        transition: transform 0.3s ease, background 0.3s ease;
    }

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

    .card img {
        width: 100%;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .card h3 {
        font-family: 'Poppins', sans-serif;
        font-size: 20px;
        margin-bottom: 10px;
        color: #FFC3A0;
    }

    .card p {
        font-size: 16px;
        color: #FFFFFF;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: linear-gradient(45deg, #FF6F61, #FFC3A0);
        color: #FFFFFF;
        border: none;
        border-radius: 25px;
        font-size: 16px;
        cursor: pointer;
        transition: transform 0.3s ease, background 0.3s ease;
        text-decoration: none;
    }

    .btn:hover {
        transform: rotate(5deg);
        background: #8E44AD;
    }

    /* 示例数据展示 */
    .sample-data {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 10px;
        padding: 30px;
        margin: 40px 0;
        max-width: 800px;
        width: 100%;
    }

    .sample-data h2 {
        font-family: 'Poppins', sans-serif;
        color: #FF6F61;
        margin-bottom: 20px;
    }

    .sample-data pre {
        background: rgba(0, 0, 0, 0.5);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    .sample-data code {
        color: #FFC3A0;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .card {
            flex: 1 1 calc(33.333% - 40px);
        }
    }

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

    @media (max-width: 1024px) {
        .navbar {
            padding: 15px 20px;
        }

        .navbar-logo {
            font-size: 20px;
        }

        .navbar-menu a {
            margin-left: 15px;
            font-size: 14px;
        }

        .card {
            flex: 1 1 calc(50% - 40px);
        }
    }

    @media (max-width: 768px) {
        .card {
            flex: 1 1 100%;
        }

        .section-content {
            flex-direction: column;
            align-items: center;
        }
    }

    @media (max-width: 480px) {
        .navbar {
            flex-direction: column;
            align-items: flex-start;
        }

        .navbar-menu a {
            margin-left: 0;
            margin-top: 10px;
        }

        .btn {
            padding: 8px 16px;
            font-size: 14px;
        }

        .sample-data {
            padding: 20px;
        }
    }

    @media (max-width: 320px) {
        .navbar-logo {
            font-size: 18px;
        }

        .navbar-menu a {
            font-size: 12px;
        }

        .card h3 {
            font-size: 18px;
        }

        .card p {
            font-size: 14px;
        }
    }

    /* 动画与过渡 */
    .fade-in {
        animation: fadeIn 2s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    .rotate {
        transition: transform 0.5s;
    }

    .rotate:hover {
        transform: rotate(360deg);
    }

    /* 底部 */
    .footer {
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(10px);
        padding: 20px;
        text-align: center;
        color: #FFFFFF;
        font-size: 14px;
    }

    .footer a {
        color: #FF6F61;
        text-decoration: none;
        margin: 0 10px;
    }

    .footer a:hover {
        text-decoration: underline;
    }